nds32: Remove the architecture

The nds32 architecture, also known as AndeStar V3, is a custom 32-bit
RISC target designed by Andes Technologies. Support was added to the
kernel in 2016 as the replacement RISC-V based V5 processors were
already announced, and maintained by (current or former) Andes
employees.

As explained by Alan Kao, new customers are now all using RISC-V,
and all known nds32 users are already on longterm stable kernels
provided by Andes, with no development work going into mainline
support any more.

While the port is still in a reasonably good shape, it only gets
worse over time without active maintainers, so it seems best
to remove it before it becomes unusable. As always, if it turns
out that there are mainline users after all, and they volunteer
to maintain the port in the future, the removal can be reverted.

Link: https://lore.kernel.org/linux-mm/YhdWNLUhk+x9RAzU@yamatobi.andestech.com/
Link: https://lore.kernel.org/lkml/20220302065213.82702-1-alankao@andestech.com/
Link: https://www.andestech.com/en/products-solutions/andestar-architecture/Signed-off-by: NAlan Kao <alankao@andestech.com>
[arnd: rewrite changelog to provide more background]
Signed-off-by: NArnd Bergmann <arnd@arndb.de>

Documentation/devicetree/bindings/interrupt-controller/andestech,ativic32.txt

-* Andestech Internal Vector Interrupt Controller
-
-The Internal Vector Interrupt Controller (IVIC) is a basic interrupt controller
-suitable for a simpler SoC platform not requiring a more sophisticated and
-bigger External Vector Interrupt Controller.
-
-
-Main node required properties:
-
-- compatible : should at least contain  "andestech,ativic32".
-- interrupt-controller : Identifies the node as an interrupt controller
-- #interrupt-cells: 1 cells and refer to interrupt-controller/interrupts
-
-Examples:
-	intc: interrupt-controller {
-		compatible = "andestech,ativic32";
-		#interrupt-cells = <1>;
-		interrupt-controller;
-	};

Documentation/devicetree/bindings/nds32/andestech-boards

-Andestech(nds32) AE3XX Platform
------------------------------------------------------------------------------
-The AE3XX prototype demonstrates the AE3XX example platform on the FPGA. It
-is composed of one Andestech(nds32) processor and AE3XX.
-
-Required properties (in root node):
-- compatible = "andestech,ae3xx";
-
-Example:
-/dts-v1/;
-/ {
-	compatible = "andestech,ae3xx";
-	#address-cells = <1>;
-	#size-cells = <1>;
-	interrupt-parent = <&intc>;
-};
-
-Andestech(nds32) AG101P Platform
------------------------------------------------------------------------------
-AG101P is a generic SoC Platform IP that works with any of Andestech(nds32)
-processors to provide a cost-effective and high performance solution for
-majority of embedded systems in variety of application domains. Users may
-simply attach their IP on one of the system buses together with certain glue
-logics to complete a SoC solution for a specific application. With
-comprehensive simulation and design environments, users may evaluate the
-system performance of their applications and track bugs of their designs
-efficiently. The optional hardware development platform further provides real
-system environment for early prototyping and software/hardware co-development.
-
-Required properties (in root node):
-	compatible = "andestech,ag101p";
-
-Example:
-/dts-v1/;
-/ {
-	compatible = "andestech,ag101p";
-	#address-cells = <1>;
-	#size-cells = <1>;
-	interrupt-parent = <&intc>;
-};

Documentation/devicetree/bindings/nds32/atl2c.txt

-* Andestech L2 cache Controller
-
-The level-2 cache controller plays an important role in reducing memory latency
-for high performance systems, such as thoese designs with AndesCore processors.
-Level-2 cache controller in general enhances overall system performance
-signigicantly and the system power consumption might be reduced as well by
-reducing DRAM accesses.
-
-This binding specifies what properties must be available in the device tree
-representation of an Andestech L2 cache controller.
-
-Required properties:
-	- compatible:
-		Usage: required
-		Value type: <string>
-		Definition: "andestech,atl2c"
-	- reg : Physical base address and size of cache controller's memory mapped
-	- cache-unified : Specifies the cache is a unified cache.
-	- cache-level : Should be set to 2 for a level 2 cache.
-
-* Example
-
-	cache-controller@e0500000 {
-		compatible = "andestech,atl2c";
-		reg = <0xe0500000 0x1000>;
-		cache-unified;
-		cache-level = <2>;
-	};

Documentation/devicetree/bindings/nds32/cpus.txt

-* Andestech Processor Binding
-
-This binding specifies what properties must be available in the device tree
-representation of a Andestech Processor Core, which is the root node in the
-tree.
-
-Required properties:
-
-	- compatible:
-		Usage: required
-		Value type: <string>
-		Definition: Should be "andestech,<core_name>", "andestech,nds32v3" as fallback.
-		Must contain "andestech,nds32v3" as the most generic value, in addition to
-		one of the following identifiers for a particular CPU core:
-		"andestech,n13"
-		"andestech,n15"
-		"andestech,d15"
-		"andestech,n10"
-		"andestech,d10"
-	- device_type
-		Usage: required
-		Value type: <string>
-		Definition: must be "cpu"
-	- reg: Contains CPU index.
-	- clock-frequency: Contains the clock frequency for CPU, in Hz.
-
-* Examples
-
-/ {
-	cpus {
-		cpu@0 {
-			device_type = "cpu";
-			compatible = "andestech,n13", "andestech,nds32v3";
-			reg = <0x0>;
-			clock-frequency = <60000000>
-		};
-	};
-};

Documentation/devicetree/bindings/perf/nds32v3-pmu.txt

-* NDS32 Performance Monitor Units
-
-NDS32 core have a PMU for counting cpu and cache events like cache misses.
-The NDS32 PMU representation in the device tree should be done as under:
-
-Required properties:
-
-- compatible :
-	"andestech,nds32v3-pmu"
-
-- interrupts : The interrupt number for NDS32 PMU is 13.
-
-Example:
-pmu{
-	compatible = "andestech,nds32v3-pmu";
-	interrupts = <13>;
-}

Documentation/devicetree/bindings/timer/andestech,atcpit100-timer.txt

-Andestech ATCPIT100 timer
-------------------------------------------------------------------
-ATCPIT100 is a generic IP block from Andes Technology, embedded in
-Andestech AE3XX platforms and other designs.
-
-This timer is a set of compact multi-function timers, which can be
-used as pulse width modulators (PWM) as well as simple timers.
-
-It supports up to 4 PIT channels. Each PIT channel is a
-multi-function timer and provide the following usage scenarios:
-One 32-bit timer
-Two 16-bit timers
-Four 8-bit timers
-One 16-bit PWM
-One 16-bit timer and one 8-bit PWM
-Two 8-bit timer and one 8-bit PWM
-
-Required properties:
-- compatible	: Should be "andestech,atcpit100"
-- reg		: Address and length of the register set
-- interrupts	: Reference to the timer interrupt
-- clocks 	: a clock to provide the tick rate for "andestech,atcpit100"
-- clock-names 	: should be "PCLK" for the peripheral clock source.
-
-Examples:
-
-timer0: timer@f0400000 {
-	compatible = "andestech,atcpit100";
-	reg = <0xf0400000 0x1000>;
-	interrupts = <2>;
-	clocks = <&apb>;
-	clock-names = "PCLK";
-};

Documentation/features/core/cBPF-JIT/arch-support.txt

@@ -17,7 +17,6 @@
     |        m68k: | TODO |
     |  microblaze: | TODO |
     |        mips: |  ok  |
-    |       nds32: | TODO |
     |       nios2: | TODO |
     |    openrisc: | TODO |
     |      parisc: | TODO |

Documentation/features/core/eBPF-JIT/arch-support.txt

@@ -17,7 +17,6 @@
     |        m68k: | TODO |
     |  microblaze: | TODO |
     |        mips: |  ok  |
-    |       nds32: | TODO |
     |       nios2: | TODO |
     |    openrisc: | TODO |
     |      parisc: | TODO |

Documentation/features/core/generic-idle-thread/arch-support.txt

@@ -17,7 +17,6 @@
     |        m68k: | TODO |
     |  microblaze: | TODO |
     |        mips: |  ok  |
-    |       nds32: | TODO |
     |       nios2: | TODO |
     |    openrisc: |  ok  |
     |      parisc: |  ok  |

Documentation/features/core/jump-labels/arch-support.txt

@@ -17,7 +17,6 @@
     |        m68k: | TODO |
     |  microblaze: | TODO |
     |        mips: |  ok  |
-    |       nds32: | TODO |
     |       nios2: | TODO |
     |    openrisc: | TODO |
     |      parisc: |  ok  |

Documentation/features/core/thread-info-in-task/arch-support.txt

@@ -17,7 +17,6 @@
     |        m68k: | TODO |
     |  microblaze: | TODO |
     |        mips: | TODO |
-    |       nds32: |  ok  |
     |       nios2: | TODO |
     |    openrisc: | TODO |
     |      parisc: |  ok  |

Documentation/features/core/tracehook/arch-support.txt

@@ -17,7 +17,6 @@
     |        m68k: | TODO |
     |  microblaze: | TODO |
     |        mips: |  ok  |
-    |       nds32: |  ok  |
     |       nios2: |  ok  |
     |    openrisc: |  ok  |
     |      parisc: |  ok  |

Documentation/features/debug/KASAN/arch-support.txt

@@ -17,7 +17,6 @@
     |        m68k: | TODO |
     |  microblaze: | TODO |
     |        mips: | TODO |
-    |       nds32: | TODO |
     |       nios2: | TODO |
     |    openrisc: | TODO |
     |      parisc: | TODO |

Documentation/features/debug/debug-vm-pgtable/arch-support.txt

@@ -17,7 +17,6 @@
     |        m68k: | TODO |
     |  microblaze: | TODO |
     |        mips: | TODO |
-    |       nds32: | TODO |
     |       nios2: | TODO |
     |    openrisc: | TODO |
     |      parisc: | TODO |

Documentation/features/debug/gcov-profile-all/arch-support.txt

@@ -17,7 +17,6 @@
     |        m68k: | TODO |
     |  microblaze: |  ok  |
     |        mips: |  ok  |
-    |       nds32: | TODO |
     |       nios2: | TODO |
     |    openrisc: | TODO |
     |      parisc: | TODO |

Documentation/features/debug/kcov/arch-support.txt

@@ -17,7 +17,6 @@
     |        m68k: | TODO |
     |  microblaze: | TODO |
     |        mips: |  ok  |
-    |       nds32: | TODO |
     |       nios2: | TODO |
     |    openrisc: | TODO |
     |      parisc: | TODO |

Documentation/features/debug/kgdb/arch-support.txt

@@ -17,7 +17,6 @@
     |        m68k: | TODO |
     |  microblaze: |  ok  |
     |        mips: |  ok  |
-    |       nds32: | TODO |
     |       nios2: |  ok  |
     |    openrisc: | TODO |
     |      parisc: |  ok  |

Documentation/features/debug/kmemleak/arch-support.txt

@@ -17,7 +17,6 @@
     |        m68k: | TODO |
     |  microblaze: |  ok  |
     |        mips: |  ok  |
-    |       nds32: |  ok  |
     |       nios2: | TODO |
     |    openrisc: | TODO |
     |      parisc: | TODO |

Documentation/features/debug/kprobes-on-ftrace/arch-support.txt

@@ -17,7 +17,6 @@
     |        m68k: | TODO |
     |  microblaze: | TODO |
     |        mips: | TODO |
-    |       nds32: | TODO |
     |       nios2: | TODO |
     |    openrisc: | TODO |
     |      parisc: |  ok  |

Documentation/features/debug/kprobes/arch-support.txt

@@ -17,7 +17,6 @@
     |        m68k: | TODO |
     |  microblaze: | TODO |
     |        mips: |  ok  |
-    |       nds32: | TODO |
     |       nios2: | TODO |
     |    openrisc: | TODO |
     |      parisc: |  ok  |

Documentation/features/debug/kretprobes/arch-support.txt

@@ -17,7 +17,6 @@
     |        m68k: | TODO |
     |  microblaze: | TODO |
     |        mips: |  ok  |
-    |       nds32: | TODO |
     |       nios2: | TODO |
     |    openrisc: | TODO |
     |      parisc: |  ok  |

Documentation/features/debug/optprobes/arch-support.txt

@@ -17,7 +17,6 @@
     |        m68k: | TODO |
     |  microblaze: | TODO |
     |        mips: | TODO |
-    |       nds32: | TODO |
     |       nios2: | TODO |
     |    openrisc: | TODO |
     |      parisc: | TODO |

Documentation/features/debug/stackprotector/arch-support.txt

@@ -17,7 +17,6 @@
     |        m68k: | TODO |
     |  microblaze: | TODO |
     |        mips: |  ok  |
-    |       nds32: | TODO |
     |       nios2: | TODO |
     |    openrisc: | TODO |
     |      parisc: | TODO |

Documentation/features/debug/uprobes/arch-support.txt

@@ -17,7 +17,6 @@
     |        m68k: | TODO |
     |  microblaze: | TODO |
     |        mips: |  ok  |
-    |       nds32: | TODO |
     |       nios2: | TODO |
     |    openrisc: | TODO |
     |      parisc: | TODO |

Documentation/features/debug/user-ret-profiler/arch-support.txt

@@ -17,7 +17,6 @@
     |        m68k: | TODO |
     |  microblaze: | TODO |
     |        mips: | TODO |
-    |       nds32: | TODO |
     |       nios2: | TODO |
     |    openrisc: | TODO |
     |      parisc: | TODO |

Documentation/features/io/dma-contiguous/arch-support.txt

@@ -17,7 +17,6 @@
     |        m68k: | TODO |
     |  microblaze: |  ok  |
     |        mips: |  ok  |
-    |       nds32: | TODO |
     |       nios2: | TODO |
     |    openrisc: | TODO |
     |      parisc: | TODO |

Documentation/features/locking/cmpxchg-local/arch-support.txt

@@ -17,7 +17,6 @@
     |        m68k: | TODO |
     |  microblaze: | TODO |
     |        mips: | TODO |
-    |       nds32: | TODO |
     |       nios2: | TODO |
     |    openrisc: | TODO |
     |      parisc: | TODO |

Documentation/features/locking/lockdep/arch-support.txt

@@ -17,7 +17,6 @@
     |        m68k: | TODO |
     |  microblaze: |  ok  |
     |        mips: |  ok  |
-    |       nds32: |  ok  |
     |       nios2: | TODO |
     |    openrisc: |  ok  |
     |      parisc: | TODO |

Documentation/features/locking/queued-rwlocks/arch-support.txt

@@ -17,7 +17,6 @@
     |        m68k: | TODO |
     |  microblaze: | TODO |
     |        mips: |  ok  |
-    |       nds32: | TODO |
     |       nios2: | TODO |
     |    openrisc: |  ok  |
     |      parisc: | TODO |

Documentation/features/locking/queued-spinlocks/arch-support.txt

@@ -17,7 +17,6 @@
     |        m68k: | TODO |
     |  microblaze: | TODO |
     |        mips: |  ok  |
-    |       nds32: | TODO |
     |       nios2: | TODO |
     |    openrisc: |  ok  |
     |      parisc: | TODO |

Documentation/features/perf/kprobes-event/arch-support.txt

@@ -17,7 +17,6 @@
     |        m68k: | TODO |
     |  microblaze: | TODO |
     |        mips: |  ok  |
-    |       nds32: |  ok  |
     |       nios2: | TODO |
     |    openrisc: | TODO |
     |      parisc: |  ok  |

Documentation/features/perf/perf-regs/arch-support.txt

@@ -17,7 +17,6 @@
     |        m68k: | TODO |
     |  microblaze: | TODO |
     |        mips: |  ok  |
-    |       nds32: | TODO |
     |       nios2: | TODO |
     |    openrisc: | TODO |
     |      parisc: | TODO |

Documentation/features/perf/perf-stackdump/arch-support.txt

@@ -17,7 +17,6 @@
     |        m68k: | TODO |
     |  microblaze: | TODO |
     |        mips: |  ok  |
-    |       nds32: | TODO |
     |       nios2: | TODO |
     |    openrisc: | TODO |
     |      parisc: | TODO |

Documentation/features/sched/membarrier-sync-core/arch-support.txt

@@ -40,7 +40,6 @@
     |        m68k: | TODO |
     |  microblaze: | TODO |
     |        mips: | TODO |
-    |       nds32: | TODO |
     |       nios2: | TODO |
     |    openrisc: | TODO |
     |      parisc: | TODO |

Documentation/features/sched/numa-balancing/arch-support.txt

@@ -17,7 +17,6 @@
     |        m68k: |  ..  |
     |  microblaze: |  ..  |
     |        mips: | TODO |
-    |       nds32: | TODO |
     |       nios2: |  ..  |
     |    openrisc: |  ..  |
     |      parisc: |  ..  |

Documentation/features/seccomp/seccomp-filter/arch-support.txt

@@ -17,7 +17,6 @@
     |        m68k: | TODO |
     |  microblaze: | TODO |
     |        mips: |  ok  |
-    |       nds32: | TODO |
     |       nios2: | TODO |
     |    openrisc: | TODO |
     |      parisc: |  ok  |

Documentation/features/time/arch-tick-broadcast/arch-support.txt

@@ -17,7 +17,6 @@
     |        m68k: | TODO |
     |  microblaze: | TODO |
     |        mips: |  ok  |
-    |       nds32: | TODO |
     |       nios2: | TODO |
     |    openrisc: | TODO |
     |      parisc: | TODO |

Documentation/features/time/clockevents/arch-support.txt

@@ -17,7 +17,6 @@
     |        m68k: | TODO |
     |  microblaze: |  ok  |
     |        mips: |  ok  |
-    |       nds32: |  ok  |
     |       nios2: |  ok  |
     |    openrisc: |  ok  |
     |      parisc: | TODO |

Documentation/features/time/context-tracking/arch-support.txt

@@ -17,7 +17,6 @@
     |        m68k: | TODO |
     |  microblaze: | TODO |
     |        mips: |  ok  |
-    |       nds32: | TODO |
     |       nios2: | TODO |
     |    openrisc: | TODO |
     |      parisc: | TODO |

Documentation/features/time/irq-time-acct/arch-support.txt

@@ -17,7 +17,6 @@
     |        m68k: | TODO |
     |  microblaze: | TODO |
     |        mips: |  ok  |
-    |       nds32: | TODO |
     |       nios2: | TODO |
     |    openrisc: | TODO |
     |      parisc: |  ..  |

Documentation/features/time/virt-cpuacct/arch-support.txt

@@ -17,7 +17,6 @@
     |        m68k: | TODO |
     |  microblaze: | TODO |
     |        mips: |  ok  |
-    |       nds32: | TODO |
     |       nios2: | TODO |
     |    openrisc: | TODO |
     |      parisc: |  ok  |

Documentation/features/vm/ELF-ASLR/arch-support.txt

@@ -17,7 +17,6 @@
     |        m68k: | TODO |
     |  microblaze: | TODO |
     |        mips: |  ok  |
-    |       nds32: | TODO |
     |       nios2: | TODO |
     |    openrisc: | TODO |
     |      parisc: |  ok  |

Documentation/features/vm/PG_uncached/arch-support.txt

@@ -17,7 +17,6 @@
     |        m68k: | TODO |
     |  microblaze: | TODO |
     |        mips: | TODO |
-    |       nds32: | TODO |
     |       nios2: | TODO |
     |    openrisc: | TODO |
     |      parisc: | TODO |

Documentation/features/vm/THP/arch-support.txt

@@ -17,7 +17,6 @@
     |        m68k: |  ..  |
     |  microblaze: |  ..  |
     |        mips: |  ok  |
-    |       nds32: | TODO |
     |       nios2: |  ..  |
     |    openrisc: |  ..  |
     |      parisc: | TODO |

Documentation/features/vm/TLB/arch-support.txt

@@ -17,7 +17,6 @@
     |        m68k: |  ..  |
     |  microblaze: |  ..  |
     |        mips: | TODO |
-    |       nds32: | TODO |
     |       nios2: |  ..  |
     |    openrisc: |  ..  |
     |      parisc: | TODO |

Documentation/features/vm/huge-vmap/arch-support.txt

@@ -17,7 +17,6 @@
     |        m68k: | TODO |
     |  microblaze: | TODO |
     |        mips: | TODO |
-    |       nds32: | TODO |
     |       nios2: | TODO |
     |    openrisc: | TODO |
     |      parisc: | TODO |

Documentation/features/vm/ioremap_prot/arch-support.txt

@@ -17,7 +17,6 @@
     |        m68k: | TODO |
     |  microblaze: | TODO |
     |        mips: |  ok  |
-    |       nds32: | TODO |
     |       nios2: | TODO |
     |    openrisc: | TODO |
     |      parisc: | TODO |

Documentation/features/vm/pte_special/arch-support.txt

@@ -17,7 +17,6 @@
     |        m68k: | TODO |
     |  microblaze: | TODO |
     |        mips: |  ok  |
-    |       nds32: | TODO |
     |       nios2: | TODO |
     |    openrisc: | TODO |
     |      parisc: | TODO |

MAINTAINERS

@@ -1229,18 +1229,6 @@ S:	Supported
 F:	drivers/clk/analogbits/*
 F:	include/linux/clk/analogbits*
 
-ANDES ARCHITECTURE
-M:	Nick Hu <nickhu@andestech.com>
-M:	Greentime Hu <green.hu@gmail.com>
-M:	Vincent Chen <deanbo422@gmail.com>
-S:	Supported
-T:	git https://git.kernel.org/pub/scm/linux/kernel/git/greentime/linux.git
-F:	Documentation/devicetree/bindings/interrupt-controller/andestech,ativic32.txt
-F:	Documentation/devicetree/bindings/nds32/
-F:	arch/nds32/
-N:	nds32
-K:	nds32
-
 ANDROID CONFIG FRAGMENTS
 M:	Rob Herring <robh@kernel.org>
 S:	Supported

arch/nds32/Kbuild

-# SPDX-License-Identifier: GPL-2.0-only
-
-# for cleaning
-subdir- += boot

arch/nds32/Kconfig

-# SPDX-License-Identifier: GPL-2.0-only
-#
-# For a description of the syntax of this configuration file,
-# see Documentation/kbuild/kconfig-language.rst.
-#
-
-config NDS32
-	def_bool y
-	select ARCH_32BIT_OFF_T
-	select ARCH_HAS_DMA_PREP_COHERENT
-	select ARCH_HAS_SYNC_DMA_FOR_CPU
-	select ARCH_HAS_SYNC_DMA_FOR_DEVICE
-	select ARCH_WANT_FRAME_POINTERS if FTRACE
-	select CLKSRC_MMIO
-	select CLONE_BACKWARDS
-	select COMMON_CLK
-	select DMA_DIRECT_REMAP
-	select GENERIC_ATOMIC64
-	select GENERIC_CPU_DEVICES
-	select GENERIC_IRQ_CHIP
-	select GENERIC_IRQ_SHOW
-	select GENERIC_IOREMAP
-	select GENERIC_LIB_ASHLDI3
-	select GENERIC_LIB_ASHRDI3
-	select GENERIC_LIB_CMPDI2
-	select GENERIC_LIB_LSHRDI3
-	select GENERIC_LIB_MULDI3
-	select GENERIC_LIB_UCMPDI2
-	select GENERIC_TIME_VSYSCALL
-	select HAVE_ARCH_TRACEHOOK
-	select HAVE_DEBUG_KMEMLEAK
-	select HAVE_EXIT_THREAD
-	select HAVE_REGS_AND_STACK_ACCESS_API
-	select HAVE_PERF_EVENTS
-	select IRQ_DOMAIN
-	select LOCKDEP_SUPPORT
-	select MODULES_USE_ELF_RELA
-	select OF
-	select OF_EARLY_FLATTREE
-	select NO_IOPORT_MAP
-	select RTC_LIB
-	select THREAD_INFO_IN_TASK
-	select HAVE_FUNCTION_TRACER
-	select HAVE_FUNCTION_GRAPH_TRACER
-	select HAVE_FTRACE_MCOUNT_RECORD
-	select HAVE_DYNAMIC_FTRACE
-	select TRACE_IRQFLAGS_SUPPORT
-	help
-	  Andes(nds32) Linux support.
-
-config GENERIC_CALIBRATE_DELAY
-	def_bool y
-
-config GENERIC_CSUM
-	def_bool y
-
-config GENERIC_HWEIGHT
-	def_bool y
-
-config GENERIC_LOCKBREAK
-	def_bool y
-	depends on PREEMPTION
-
-config STACKTRACE_SUPPORT
-	def_bool y
-
-config FIX_EARLYCON_MEM
-	def_bool y
-
-config PGTABLE_LEVELS
-	default 2
-
-menu "System Type"
-source "arch/nds32/Kconfig.cpu"
-config NR_CPUS
-	int
-	default 1
-
-config MMU
-	def_bool y
-
-config NDS32_BUILTIN_DTB
-	string "Builtin DTB"
-	default ""
-	help
-	  User can use it to specify the dts of the SoC
-endmenu
-
-menu "Kernel Features"
-source "kernel/Kconfig.hz"
-endmenu
-
-menu "Power management options"
-config SYS_SUPPORTS_APM_EMULATION
-	bool
-
-config ARCH_SUSPEND_POSSIBLE
-	def_bool y
-
-source "kernel/power/Kconfig"
-endmenu

arch/nds32/Kconfig.cpu

-# SPDX-License-Identifier: GPL-2.0-only
-comment "Processor Features"
-
-config CPU_BIG_ENDIAN
-	def_bool !CPU_LITTLE_ENDIAN
-
-config CPU_LITTLE_ENDIAN
-	bool "Little endian"
-	default y
-
-config FPU
-	bool "FPU support"
-	default n
-	help
-	  If FPU ISA is used in user space, this configuration shall be Y to
-          enable required support in kernel such as fpu context switch and
-          fpu exception handler.
-
-	  If no FPU ISA is used in user space, say N.
-
-config LAZY_FPU
-	bool "lazy FPU support"
-	depends on FPU
-	default y
-	help
-	  Say Y here to enable the lazy FPU scheme. The lazy FPU scheme can
-          enhance system performance by reducing the context switch
-	  frequency of the FPU register.
-
-	  For normal case, say Y.
-
-config SUPPORT_DENORMAL_ARITHMETIC
-	bool "Denormal arithmetic support"
-	depends on FPU
-	default n
-	help
-	  Say Y here to enable arithmetic of denormalized number. Enabling
-	  this feature can enhance the precision for tininess number.
-	  However, performance loss in float point calculations is
-	  possibly significant due to additional FPU exception.
-
-	  If the calculated tolerance for tininess number is not critical,
-	  say N to prevent performance loss.
-
-config HWZOL
-	bool "hardware zero overhead loop support"
-	depends on CPU_D10 || CPU_D15
-	default n
-	help
-	  A set of Zero-Overhead Loop mechanism is provided to reduce the
-	  instruction fetch and execution overhead of loop-control instructions.
-	  It will save 3 registers($LB, $LC, $LE) for context saving if say Y.
-	  You don't need to save these registers if you can make sure your user
-	  program doesn't use these registers.
-
-	  If unsure, say N.
-
-config CPU_CACHE_ALIASING
-	bool "Aliasing cache"
-	depends on CPU_N10 || CPU_D10 || CPU_N13 || CPU_V3
-	default y
-	help
-	  If this CPU is using VIPT data cache and its cache way size is larger
-	  than page size, say Y. If it is using PIPT data cache, say N.
-
-	  If unsure, say Y.
-
-choice
-	prompt "minimum CPU type"
-	default CPU_V3
-	help
-	  The data cache of N15/D15 is implemented as PIPT and it will not cause
-	  the cache aliasing issue. The rest cpus(N13, N10 and D10) are
-	  implemented as VIPT data cache. It may cause the cache aliasing issue
-	  if its cache way size is larger than page size. You can specify the
-	  CPU type directly or choose CPU_V3 if unsure.
-
-          A kernel built for N10 is able to run on N15, D15, N13, N10 or D10.
-          A kernel built for N15 is able to run on N15 or D15.
-          A kernel built for D10 is able to run on D10 or D15.
-          A kernel built for D15 is able to run on D15.
-          A kernel built for N13 is able to run on N15, N13 or D15.
-
-config CPU_N15
-	bool "AndesCore N15"
-config CPU_N13
-	bool "AndesCore N13"
-	select CPU_CACHE_ALIASING if ANDES_PAGE_SIZE_4KB
-config CPU_N10
-	bool "AndesCore N10"
-	select CPU_CACHE_ALIASING
-config CPU_D15
-	bool "AndesCore D15"
-config CPU_D10
-	bool "AndesCore D10"
-	select CPU_CACHE_ALIASING
-config CPU_V3
-	bool "AndesCore v3 compatible"
-	select CPU_CACHE_ALIASING
-endchoice
-choice
-	prompt "Paging -- page size "
-	default ANDES_PAGE_SIZE_4KB
-config  ANDES_PAGE_SIZE_4KB
-	bool "use 4KB page size"
-config  ANDES_PAGE_SIZE_8KB
-	bool "use 8KB page size"
-endchoice
-
-config CPU_ICACHE_DISABLE
-	bool "Disable I-Cache"
-	help
-	  Say Y here to disable the processor instruction cache. Unless
-	  you have a reason not to or are unsure, say N.
-
-config CPU_DCACHE_DISABLE
-	bool "Disable D-Cache"
-	help
-	  Say Y here to disable the processor data cache. Unless
-	  you have a reason not to or are unsure, say N.
-
-config CPU_DCACHE_WRITETHROUGH
-	bool "Force write through D-cache"
-	depends on !CPU_DCACHE_DISABLE
-	help
-	  Say Y here to use the data cache in writethrough mode. Unless you
-	  specifically require this or are unsure, say N.
-
-config WBNA
-	bool "WBNA"
-	default n
-	help
-	  Say Y here to enable write-back memory with no-write-allocation policy.
-
-config ALIGNMENT_TRAP
-	bool "Kernel support unaligned access handling by sw"
-	depends on PROC_FS
-	default n
-	help
-	  Andes processors cannot load/store information which is not
-	  naturally aligned on the bus, i.e., a 4 byte load must start at an
-	  address divisible by 4. On 32-bit Andes processors, these non-aligned
-	  load/store instructions will be emulated in software if you say Y
-	  here, which has a severe performance impact. With an IP-only
-	  configuration it is safe to say N, otherwise say Y.
-
-config HW_SUPPORT_UNALIGNMENT_ACCESS
-	bool "Kernel support unaligned access handling by hw"
-	depends on !ALIGNMENT_TRAP
-	default n
-	help
-	  Andes processors load/store world/half-word instructions can access
-	  unaligned memory locations without generating the Data Alignment
-	  Check exceptions. With an IP-only configuration it is safe to say N,
-	  otherwise say Y.
-
-config HIGHMEM
-	bool "High Memory Support"
-	depends on MMU && !CPU_CACHE_ALIASING
-	select KMAP_LOCAL
-	help
-	  The address space of Andes processors is only 4 Gigabytes large
-	  and it has to accommodate user address space, kernel address
-	  space as well as some memory mapped IO. That means that, if you
-	  have a large amount of physical memory and/or IO, not all of the
-	  memory can be "permanently mapped" by the kernel. The physical
-	  memory that is not permanently mapped is called "high memory".
-
-	  Depending on the selected kernel/user memory split, minimum
-	  vmalloc space and actual amount of RAM, you may not need this
-	  option which should result in a slightly faster kernel.
-
-	  If unsure, say N.
-
-config CACHE_L2
-	bool "Support L2 cache"
-        default y
-	help
-	  Say Y here to enable L2 cache if your SoC are integrated with L2CC.
-	  If unsure, say N.
-
-config HW_PRE
-	bool "Enable hardware prefetcher"
-	default y
-	help
-	  Say Y here to enable hardware prefetcher feature.
-	  Only when CPU_VER.REV >= 0x09 can support.
-
-menu "Memory configuration"
-
-choice
-	prompt "Memory split"
-	depends on MMU
-	default VMSPLIT_3G_OPT
-	help
-	  Select the desired split between kernel and user memory.
-
-	  If you are not absolutely sure what you are doing, leave this
-	  option alone!
-
-	config VMSPLIT_3G
-		bool "3G/1G user/kernel split"
-	config VMSPLIT_3G_OPT
-		bool "3G/1G user/kernel split (for full 1G low memory)"
-	config VMSPLIT_2G
-		bool "2G/2G user/kernel split"
-	config VMSPLIT_1G
-		bool "1G/3G user/kernel split"
-endchoice
-
-config PAGE_OFFSET
-	hex
-	default 0x40000000 if VMSPLIT_1G
-	default 0x80000000 if VMSPLIT_2G
-	default 0xB0000000 if VMSPLIT_3G_OPT
-	default 0xC0000000
-
-endmenu

arch/nds32/Kconfig.debug

-# SPDX-License-Identifier: GPL-2.0-only
-# dummy file, do not delete

arch/nds32/Makefile

-# SPDX-License-Identifier: GPL-2.0-only
-LDFLAGS_vmlinux	:= --no-undefined -X
-OBJCOPYFLAGS	:= -O binary -R .note -R .note.gnu.build-id -R .comment -S
-
-ifdef CONFIG_FUNCTION_TRACER
-arch-y += -malways-save-lp -mno-relax
-endif
-
-# Avoid generating FPU instructions
-arch-y  += -mno-ext-fpu-sp -mno-ext-fpu-dp -mfloat-abi=soft
-
-# Enable <nds32_intrinsic.h>
-KBUILD_CFLAGS	+= -isystem $(shell $(CC) -print-file-name=include)
-KBUILD_CFLAGS	+= $(call cc-option, -mno-sched-prolog-epilog)
-KBUILD_CFLAGS	+= -mcmodel=large
-
-KBUILD_CFLAGS	+=$(arch-y) $(tune-y)
-KBUILD_AFLAGS	+=$(arch-y) $(tune-y)
-
-#Default value
-head-y		 := arch/nds32/kernel/head.o
-textaddr-y	 := $(CONFIG_PAGE_OFFSET)+0xc000
-
-TEXTADDR := $(textaddr-y)
-
-export	TEXTADDR
-
-
-# If we have a machine-specific directory, then include it in the build.
-core-y				+= arch/nds32/kernel/ arch/nds32/mm/
-core-$(CONFIG_FPU)              += arch/nds32/math-emu/
-libs-y				+= arch/nds32/lib/
-
-ifdef CONFIG_CPU_LITTLE_ENDIAN
-KBUILD_CFLAGS   += $(call cc-option, -EL)
-KBUILD_AFLAGS   += $(call cc-option, -EL)
-KBUILD_LDFLAGS  += $(call cc-option, -EL)
-CHECKFLAGS      += -D__NDS32_EL__
-else
-KBUILD_CFLAGS   += $(call cc-option, -EB)
-KBUILD_AFLAGS   += $(call cc-option, -EB)
-KBUILD_LDFLAGS  += $(call cc-option, -EB)
-CHECKFLAGS      += -D__NDS32_EB__
-endif
-
-boot := arch/nds32/boot
-core-y += $(boot)/dts/
-
-Image: vmlinux
-	$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
-
-
-PHONY += vdso_install
-vdso_install:
-	$(Q)$(MAKE) $(build)=arch/nds32/kernel/vdso $@
-
-prepare: vdso_prepare
-vdso_prepare: prepare0
-	$(Q)$(MAKE) $(build)=arch/nds32/kernel/vdso include/generated/vdso-offsets.h
-
-define archhelp
-  echo  '  Image         - kernel image (arch/$(ARCH)/boot/Image)'
-endef

arch/nds32/boot/.gitignore

-# SPDX-License-Identifier: GPL-2.0-only
-/Image

arch/nds32/boot/Makefile

-# SPDX-License-Identifier: GPL-2.0-only
-targets := Image Image.gz
-
-$(obj)/Image: vmlinux FORCE
-	$(call if_changed,objcopy)
-
-$(obj)/Image.gz: $(obj)/Image FORCE
-	$(call if_changed,gzip)
-
-install: $(obj)/Image
-	$(CONFIG_SHELL) $(srctree)/$(src)/install.sh $(KERNELRELEASE) \
-	$(obj)/Image System.map "$(INSTALL_PATH)"
-
-zinstall: $(obj)/Image.gz
-	$(CONFIG_SHELL) $(srctree)/$(src)/install.sh $(KERNELRELEASE) \
-	$(obj)/Image.gz System.map "$(INSTALL_PATH)"

arch/nds32/boot/dts/Makefile

-# SPDX-License-Identifier: GPL-2.0-only
-obj-$(CONFIG_OF) += $(addsuffix .dtb.o, $(CONFIG_NDS32_BUILTIN_DTB))

arch/nds32/boot/dts/ae3xx.dts

-/dts-v1/;
-/ {
-	compatible = "andestech,ae3xx";
-	#address-cells = <1>;
-	#size-cells = <1>;
-	interrupt-parent = <&intc>;
-
-	chosen {
-		stdout-path = &serial0;
-	};
-
-	memory@0 {
-		device_type = "memory";
-		reg = <0x00000000 0x40000000>;
-	};
-
-	cpus {
-		#address-cells = <1>;
-		#size-cells = <0>;
-		cpu@0 {
-			device_type = "cpu";
-			compatible = "andestech,n13", "andestech,nds32v3";
-			reg = <0>;
-			clock-frequency = <60000000>;
-			next-level-cache = <&L2>;
-		};
-	};
-
-	intc: interrupt-controller {
-		compatible = "andestech,ativic32";
-		#interrupt-cells = <1>;
-		interrupt-controller;
-	};
-
-	clock: clk {
-		#clock-cells = <0>;
-		compatible = "fixed-clock";
-		clock-frequency = <30000000>;
-	};
-
-	apb {
-		compatible = "simple-bus";
-		#address-cells = <1>;
-		#size-cells = <1>;
-		ranges;
-
-		serial0: serial@f0300000 {
-			compatible = "andestech,uart16550", "ns16550a";
-			reg = <0xf0300000 0x1000>;
-			interrupts = <8>;
-			clock-frequency = <14745600>;
-			reg-shift = <2>;
-			reg-offset = <32>;
-			no-loopback-test = <1>;
-		};
-
-		timer0: timer@f0400000 {
-			compatible = "andestech,atcpit100";
-			reg = <0xf0400000 0x1000>;
-			interrupts = <2>;
-			clocks = <&clock>;
-			clock-names = "PCLK";
-		};
-	};
-
-	ahb {
-		compatible = "simple-bus";
-		#address-cells = <1>;
-		#size-cells = <1>;
-		ranges;
-
-		L2: cache-controller@e0500000 {
-			compatible = "andestech,atl2c";
-			reg = <0xe0500000 0x1000>;
-			cache-unified;
-			cache-level = <2>;
-		};
-
-		mac0: ethernet@e0100000 {
-			compatible = "andestech,atmac100";
-			reg = <0xe0100000 0x1000>;
-			interrupts = <18>;
-		};
-	};
-
-	pmu {
-		compatible = "andestech,nds32v3-pmu";
-		interrupts= <13>;
-	};
-};

arch/nds32/configs/defconfig

-CONFIG_SYSVIPC=y
-CONFIG_POSIX_MQUEUE=y
-CONFIG_HIGH_RES_TIMERS=y
-CONFIG_BSD_PROCESS_ACCT=y
-CONFIG_BSD_PROCESS_ACCT_V3=y
-CONFIG_IKCONFIG=y
-CONFIG_IKCONFIG_PROC=y
-CONFIG_LOG_BUF_SHIFT=14
-CONFIG_USER_NS=y
-CONFIG_RELAY=y
-CONFIG_BLK_DEV_INITRD=y
-CONFIG_KALLSYMS_ALL=y
-CONFIG_PROFILING=y
-CONFIG_MODULES=y
-CONFIG_MODULE_UNLOAD=y
-# CONFIG_BLK_DEV_BSG is not set
-# CONFIG_CACHE_L2 is not set
-CONFIG_PREEMPT=y
-# CONFIG_COMPACTION is not set
-CONFIG_HZ_100=y
-# CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set
-CONFIG_NET=y
-CONFIG_PACKET=y
-CONFIG_UNIX=y
-CONFIG_NET_KEY=y
-CONFIG_INET=y
-CONFIG_IP_MULTICAST=y
-# CONFIG_INET_XFRM_MODE_TRANSPORT is not set
-# CONFIG_INET_XFRM_MODE_TUNNEL is not set
-# CONFIG_INET_XFRM_MODE_BEET is not set
-# CONFIG_INET_DIAG is not set
-# CONFIG_IPV6 is not set
-# CONFIG_BLK_DEV is not set
-CONFIG_NETDEVICES=y
-# CONFIG_NET_CADENCE is not set
-# CONFIG_NET_VENDOR_BROADCOM is not set
-CONFIG_FTMAC100=y
-# CONFIG_NET_VENDOR_INTEL is not set
-# CONFIG_NET_VENDOR_MARVELL is not set
-# CONFIG_NET_VENDOR_MICREL is not set
-# CONFIG_NET_VENDOR_NATSEMI is not set
-# CONFIG_NET_VENDOR_SEEQ is not set
-# CONFIG_NET_VENDOR_STMICRO is not set
-# CONFIG_NET_VENDOR_WIZNET is not set
-CONFIG_INPUT_EVDEV=y
-# CONFIG_INPUT_KEYBOARD is not set
-# CONFIG_INPUT_MOUSE is not set
-CONFIG_INPUT_TOUCHSCREEN=y
-# CONFIG_SERIO is not set
-CONFIG_VT_HW_CONSOLE_BINDING=y
-CONFIG_SERIAL_8250=y
-# CONFIG_SERIAL_8250_DEPRECATED_OPTIONS is not set
-CONFIG_SERIAL_8250_CONSOLE=y
-CONFIG_SERIAL_8250_NR_UARTS=3
-CONFIG_SERIAL_8250_RUNTIME_UARTS=3
-CONFIG_SERIAL_OF_PLATFORM=y
-# CONFIG_HW_RANDOM is not set
-# CONFIG_HWMON is not set
-# CONFIG_HID_A4TECH is not set
-# CONFIG_HID_APPLE is not set
-# CONFIG_HID_BELKIN is not set
-# CONFIG_HID_CHERRY is not set
-# CONFIG_HID_CHICONY is not set
-# CONFIG_HID_CYPRESS is not set
-# CONFIG_HID_EZKEY is not set
-# CONFIG_HID_ITE is not set
-# CONFIG_HID_KENSINGTON is not set
-# CONFIG_HID_LOGITECH is not set
-# CONFIG_HID_MICROSOFT is not set
-# CONFIG_HID_MONTEREY is not set
-# CONFIG_USB_SUPPORT is not set
-CONFIG_GENERIC_PHY=y
-CONFIG_EXT4_FS=y
-CONFIG_EXT4_FS_POSIX_ACL=y
-CONFIG_EXT4_FS_SECURITY=y
-CONFIG_FS_ENCRYPTION=y
-CONFIG_FUSE_FS=y
-CONFIG_MSDOS_FS=y
-CONFIG_VFAT_FS=y
-CONFIG_TMPFS=y
-CONFIG_TMPFS_POSIX_ACL=y
-CONFIG_CONFIGFS_FS=y
-CONFIG_NFS_FS=y
-CONFIG_NFS_V3_ACL=y
-CONFIG_NFS_V4=y
-CONFIG_NFS_V4_1=y
-CONFIG_NFS_USE_LEGACY_DNS=y
-CONFIG_NLS_CODEPAGE_437=y
-CONFIG_NLS_ISO8859_1=y
-CONFIG_DEBUG_INFO=y
-CONFIG_DEBUG_INFO_DWARF4=y
-CONFIG_GDB_SCRIPTS=y
-CONFIG_READABLE_ASM=y
-CONFIG_HEADERS_INSTALL=y
-CONFIG_HEADERS_CHECK=y
-CONFIG_DEBUG_SECTION_MISMATCH=y
-CONFIG_MAGIC_SYSRQ=y
-CONFIG_DEBUG_KERNEL=y
-CONFIG_PANIC_ON_OOPS=y
-# CONFIG_SCHED_DEBUG is not set
-# CONFIG_DEBUG_PREEMPT is not set
-CONFIG_STACKTRACE=y
-CONFIG_RCU_CPU_STALL_TIMEOUT=300
-# CONFIG_CRYPTO_HW is not set

arch/nds32/include/asm/Kbuild

-# SPDX-License-Identifier: GPL-2.0
-generic-y += asm-offsets.h
-generic-y += cmpxchg.h
-generic-y += export.h
-generic-y += gpio.h
-generic-y += kvm_para.h
-generic-y += parport.h
-generic-y += user.h

arch/nds32/include/asm/assembler.h

-/* SPDX-License-Identifier: GPL-2.0 */
-// Copyright (C) 2005-2017 Andes Technology Corporation
-
-#ifndef __NDS32_ASSEMBLER_H__
-#define __NDS32_ASSEMBLER_H__
-
-.macro gie_disable
-	setgie.d
-	dsb
-.endm
-
-.macro gie_enable
-	setgie.e
-	dsb
-.endm
-
-.macro gie_save oldpsw
-	mfsr \oldpsw, $ir0
-	setgie.d
-        dsb
-.endm
-
-.macro gie_restore oldpsw
-	andi \oldpsw, \oldpsw, #0x1
-	beqz \oldpsw, 7001f
-	setgie.e
-	dsb
-7001:
-.endm
-
-
-#define USER(insn,  reg, addr, opr)	\
-9999:	insn  reg, addr, opr;		\
-	.section __ex_table,"a";	\
-	.align 3;			\
-	.long	9999b, 9001f;		\
-	.previous
-
-#endif /* __NDS32_ASSEMBLER_H__ */

arch/nds32/include/asm/barrier.h

-/* SPDX-License-Identifier: GPL-2.0 */
-// Copyright (C) 2005-2017 Andes Technology Corporation
-
-#ifndef __NDS32_ASM_BARRIER_H
-#define __NDS32_ASM_BARRIER_H
-
-#ifndef __ASSEMBLY__
-#define mb()		asm volatile("msync all":::"memory")
-#define rmb()		asm volatile("msync all":::"memory")
-#define wmb()		asm volatile("msync store":::"memory")
-#include <asm-generic/barrier.h>
-
-#endif	/* __ASSEMBLY__ */
-
-#endif	/* __NDS32_ASM_BARRIER_H */

arch/nds32/include/asm/cache.h

-/* SPDX-License-Identifier: GPL-2.0 */
-// Copyright (C) 2005-2017 Andes Technology Corporation
-
-#ifndef __NDS32_CACHE_H__
-#define __NDS32_CACHE_H__
-
-#define L1_CACHE_BYTES	32
-#define L1_CACHE_SHIFT	5
-
-#define ARCH_DMA_MINALIGN   L1_CACHE_BYTES
-
-#endif /* __NDS32_CACHE_H__ */

arch/nds32/include/asm/cache_info.h

-/* SPDX-License-Identifier: GPL-2.0 */
-// Copyright (C) 2005-2017 Andes Technology Corporation
-
-struct cache_info {
-	unsigned char ways;
-	unsigned char line_size;
-	unsigned short sets;
-	unsigned short size;
-#if defined(CONFIG_CPU_CACHE_ALIASING)
-	unsigned short aliasing_num;
-	unsigned int aliasing_mask;
-#endif
-};

arch/nds32/include/asm/cacheflush.h

-/* SPDX-License-Identifier: GPL-2.0 */
-// Copyright (C) 2005-2017 Andes Technology Corporation
-
-#ifndef __NDS32_CACHEFLUSH_H__
-#define __NDS32_CACHEFLUSH_H__
-
-#include <linux/mm.h>
-
-#define PG_dcache_dirty PG_arch_1
-
-void flush_icache_range(unsigned long start, unsigned long end);
-#define flush_icache_range flush_icache_range
-
-void flush_icache_page(struct vm_area_struct *vma, struct page *page);
-#define flush_icache_page flush_icache_page
-
-#ifdef CONFIG_CPU_CACHE_ALIASING
-void flush_cache_mm(struct mm_struct *mm);
-void flush_cache_dup_mm(struct mm_struct *mm);
-void flush_cache_range(struct vm_area_struct *vma,
-		       unsigned long start, unsigned long end);
-void flush_cache_page(struct vm_area_struct *vma,
-		      unsigned long addr, unsigned long pfn);
-void flush_cache_kmaps(void);
-void flush_cache_vmap(unsigned long start, unsigned long end);
-void flush_cache_vunmap(unsigned long start, unsigned long end);
-
-#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1
-void flush_dcache_page(struct page *page);
-void copy_to_user_page(struct vm_area_struct *vma, struct page *page,
-		       unsigned long vaddr, void *dst, void *src, int len);
-void copy_from_user_page(struct vm_area_struct *vma, struct page *page,
-			 unsigned long vaddr, void *dst, void *src, int len);
-
-#define ARCH_HAS_FLUSH_ANON_PAGE
-void flush_anon_page(struct vm_area_struct *vma,
-		     struct page *page, unsigned long vaddr);
-
-#define ARCH_IMPLEMENTS_FLUSH_KERNEL_VMAP_RANGE 1
-void flush_kernel_vmap_range(void *addr, int size);
-void invalidate_kernel_vmap_range(void *addr, int size);
-#define flush_dcache_mmap_lock(mapping)   xa_lock_irq(&(mapping)->i_pages)
-#define flush_dcache_mmap_unlock(mapping) xa_unlock_irq(&(mapping)->i_pages)
-
-#else
-void flush_icache_user_page(struct vm_area_struct *vma, struct page *page,
-	                     unsigned long addr, int len);
-#define flush_icache_user_page flush_icache_user_page
-
-#include <asm-generic/cacheflush.h>
-#endif
-
-#endif /* __NDS32_CACHEFLUSH_H__ */

arch/nds32/include/asm/current.h

-/* SPDX-License-Identifier: GPL-2.0 */
-// Copyright (C) 2005-2017 Andes Technology Corporation
-
-#ifndef _ASM_NDS32_CURRENT_H
-#define _ASM_NDS32_CURRENT_H
-
-#ifndef __ASSEMBLY__
-register struct task_struct *current asm("$r25");
-#endif /* __ASSEMBLY__ */
-#define tsk $r25
-
-#endif /* _ASM_NDS32_CURRENT_H */

arch/nds32/include/asm/delay.h

-/* SPDX-License-Identifier: GPL-2.0 */
-// Copyright (C) 2005-2017 Andes Technology Corporation
-
-#ifndef __NDS32_DELAY_H__
-#define __NDS32_DELAY_H__
-
-#include <asm/param.h>
-
-/* There is no clocksource cycle counter in the CPU. */
-static inline void __delay(unsigned long loops)
-{
-	__asm__ __volatile__(".align 2\n"
-			     "1:\n"
-			     "\taddi\t%0, %0, -1\n"
-			     "\tbgtz\t%0, 1b\n"
-			     :"=r"(loops)
-			     :"0"(loops));
-}
-
-static inline void __udelay(unsigned long usecs, unsigned long lpj)
-{
-	usecs *= (unsigned long)(((0x8000000000000000ULL / (500000 / HZ)) +
-				  0x80000000ULL) >> 32);
-	usecs = (unsigned long)(((unsigned long long)usecs * lpj) >> 32);
-	__delay(usecs);
-}
-
-#define udelay(usecs) __udelay((usecs), loops_per_jiffy)
-
-/* make sure "usecs *= ..." in udelay do not overflow. */
-#if HZ >= 1000
-#define MAX_UDELAY_MS	1
-#elif HZ <= 200
-#define MAX_UDELAY_MS	5
-#else
-#define MAX_UDELAY_MS	(1000 / HZ)
-#endif
-
-#endif

arch/nds32/include/asm/elf.h

-/* SPDX-License-Identifier: GPL-2.0 */
-// Copyright (C) 2005-2017 Andes Technology Corporation
-
-#ifndef __ASMNDS32_ELF_H
-#define __ASMNDS32_ELF_H
-
-/*
- * ELF register definitions..
- */
-
-#include <asm/ptrace.h>
-#include <asm/fpu.h>
-#include <linux/elf-em.h>
-
-typedef unsigned long elf_greg_t;
-typedef unsigned long elf_freg_t[3];
-
-extern unsigned int elf_hwcap;
-
-#define R_NDS32_NONE			0
-#define R_NDS32_16_RELA			19
-#define R_NDS32_32_RELA			20
-#define R_NDS32_9_PCREL_RELA		22
-#define R_NDS32_15_PCREL_RELA		23
-#define R_NDS32_17_PCREL_RELA		24
-#define R_NDS32_25_PCREL_RELA		25
-#define R_NDS32_HI20_RELA		26
-#define R_NDS32_LO12S3_RELA		27
-#define R_NDS32_LO12S2_RELA		28
-#define R_NDS32_LO12S1_RELA		29
-#define R_NDS32_LO12S0_RELA		30
-#define R_NDS32_SDA15S3_RELA    	31
-#define R_NDS32_SDA15S2_RELA    	32
-#define R_NDS32_SDA15S1_RELA    	33
-#define R_NDS32_SDA15S0_RELA    	34
-#define R_NDS32_GOT20			37
-#define R_NDS32_25_PLTREL		38
-#define R_NDS32_COPY			39
-#define R_NDS32_GLOB_DAT		40
-#define R_NDS32_JMP_SLOT		41
-#define R_NDS32_RELATIVE		42
-#define R_NDS32_GOTOFF			43
-#define R_NDS32_GOTPC20			44
-#define R_NDS32_GOT_HI20		45
-#define R_NDS32_GOT_LO12		46
-#define R_NDS32_GOTPC_HI20		47
-#define R_NDS32_GOTPC_LO12		48
-#define R_NDS32_GOTOFF_HI20		49
-#define R_NDS32_GOTOFF_LO12		50
-#define R_NDS32_INSN16			51
-#define R_NDS32_LABEL			52
-#define R_NDS32_LONGCALL1		53
-#define R_NDS32_LONGCALL2		54
-#define R_NDS32_LONGCALL3		55
-#define R_NDS32_LONGJUMP1		56
-#define R_NDS32_LONGJUMP2		57
-#define R_NDS32_LONGJUMP3		58
-#define R_NDS32_LOADSTORE		59
-#define R_NDS32_9_FIXED_RELA		60
-#define R_NDS32_15_FIXED_RELA		61
-#define R_NDS32_17_FIXED_RELA		62
-#define R_NDS32_25_FIXED_RELA		63
-#define R_NDS32_PLTREL_HI20		64
-#define R_NDS32_PLTREL_LO12		65
-#define R_NDS32_PLT_GOTREL_HI20		66
-#define R_NDS32_PLT_GOTREL_LO12		67
-#define R_NDS32_LO12S0_ORI_RELA		72
-#define R_NDS32_DWARF2_OP1_RELA     	77
-#define R_NDS32_DWARF2_OP2_RELA     	78
-#define R_NDS32_DWARF2_LEB_RELA     	79
-#define R_NDS32_WORD_9_PCREL_RELA	94
-#define R_NDS32_LONGCALL4 		107
-#define R_NDS32_RELA_NOP_MIX		192
-#define R_NDS32_RELA_NOP_MAX		255
-
-#define ELF_NGREG (sizeof (struct user_pt_regs) / sizeof(elf_greg_t))
-#define ELF_CORE_COPY_REGS(dest, regs)	\
-	*(struct user_pt_regs *)&(dest) = (regs)->user_regs;
-
-typedef elf_greg_t elf_gregset_t[ELF_NGREG];
-
-/* Core file format: The core file is written in such a way that gdb
-   can understand it and provide useful information to the user (under
-   linux we use the 'trad-core' bfd).  There are quite a number of
-   obstacles to being able to view the contents of the floating point
-   registers, and until these are solved you will not be able to view the
-   contents of them.  Actually, you can read in the core file and look at
-   the contents of the user struct to find out what the floating point
-   registers contain.
-   The actual file contents are as follows:
-   UPAGE: 1 page consisting of a user struct that tells gdb what is present
-   in the file.  Directly after this is a copy of the task_struct, which
-   is currently not used by gdb, but it may come in useful at some point.
-   All of the registers are stored as part of the upage.  The upage should
-   always be only one page.
-   DATA: The data area is stored.  We use current->end_text to
-   current->brk to pick up all of the user variables, plus any memory
-   that may have been malloced.  No attempt is made to determine if a page
-   is demand-zero or if a page is totally unused, we just cover the entire
-   range.  All of the addresses are rounded in such a way that an integral
-   number of pages is written.
-   STACK: We need the stack information in order to get a meaningful
-   backtrace.  We need to write the data from (esp) to
-   current->start_stack, so we round each of these off in order to be able
-   to write an integer number of pages.
-   The minimum core file size is 3 pages, or 12288 bytes.
-*/
-
-struct user_fp {
-        unsigned long long fd_regs[32];
-        unsigned long fpcsr;
-};
-
-typedef struct user_fp elf_fpregset_t;
-
-struct elf32_hdr;
-#define elf_check_arch(x)		((x)->e_machine == EM_NDS32)
-
-/*
- * These are used to set parameters in the core dumps.
- */
-#define ELF_CLASS	ELFCLASS32
-#ifdef __NDS32_EB__
-#define ELF_DATA	ELFDATA2MSB
-#else
-#define ELF_DATA	ELFDATA2LSB
-#endif
-#define ELF_ARCH	EM_NDS32
-#define ELF_EXEC_PAGESIZE	PAGE_SIZE
-
-/* This is the location that an ET_DYN program is loaded if exec'ed.  Typical
-   use of this is to invoke "./ld.so someprog" to test out a new version of
-   the loader.  We need to make sure that it is out of the way of the program
-   that it will "exec", and that there is sufficient room for the brk.  */
-
-#define ELF_ET_DYN_BASE	(2 * TASK_SIZE / 3)
-
-/* When the program starts, a1 contains a pointer to a function to be
-   registered with atexit, as per the SVR4 ABI.  A value of 0 means we
-   have no such handler.  */
-#define ELF_PLAT_INIT(_r, load_addr)	(_r)->uregs[0] = 0
-
-/* This yields a mask that user programs can use to figure out what
-   instruction set this cpu supports. */
-
-#define ELF_HWCAP	(elf_hwcap)
-
-#ifdef __KERNEL__
-
-#define ELF_PLATFORM    (NULL)
-
-/* Old NetWinder binaries were compiled in such a way that the iBCS
-   heuristic always trips on them.  Until these binaries become uncommon
-   enough not to care, don't trust the `ibcs' flag here.  In any case
-   there is no other ELF system currently supported by iBCS.
-   @@ Could print a warning message to encourage users to upgrade.  */
-#define SET_PERSONALITY(ex)	set_personality(PER_LINUX)
-
-#endif
-
-
-#if IS_ENABLED(CONFIG_FPU)
-#define FPU_AUX_ENT	NEW_AUX_ENT(AT_FPUCW, FPCSR_INIT)
-#else
-#define FPU_AUX_ENT	NEW_AUX_ENT(AT_IGNORE, 0)
-#endif
-
-#define ARCH_DLINFO						\
-do {								\
-	/* Optional FPU initialization */			\
-	FPU_AUX_ENT;						\
-								\
-	NEW_AUX_ENT(AT_SYSINFO_EHDR,				\
-		    (elf_addr_t)current->mm->context.vdso);	\
-} while (0)
-#define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1
-struct linux_binprm;
-int arch_setup_additional_pages(struct linux_binprm *, int);
-
-#endif

arch/nds32/include/asm/fixmap.h

-/* SPDX-License-Identifier: GPL-2.0 */
-// Copyright (C) 2005-2017 Andes Technology Corporation
-
-#ifndef __ASM_NDS32_FIXMAP_H
-#define __ASM_NDS32_FIXMAP_H
-
-#ifdef CONFIG_HIGHMEM
-#include <linux/threads.h>
-#include <asm/kmap_size.h>
-#endif
-
-enum fixed_addresses {
-	FIX_HOLE,
-	FIX_KMAP_RESERVED,
-	FIX_KMAP_BEGIN,
-#ifdef CONFIG_HIGHMEM
-	FIX_KMAP_END = FIX_KMAP_BEGIN + (KM_MAX_IDX * NR_CPUS) - 1,
-#endif
-	FIX_EARLYCON_MEM_BASE,
-	__end_of_fixed_addresses
-};
-#define FIXADDR_TOP             ((unsigned long) (-(16 * PAGE_SIZE)))
-#define FIXADDR_SIZE		((__end_of_fixed_addresses) << PAGE_SHIFT)
-#define FIXADDR_START		(FIXADDR_TOP - FIXADDR_SIZE)
-#define FIXMAP_PAGE_IO		__pgprot(PAGE_DEVICE)
-void __set_fixmap(enum fixed_addresses idx, phys_addr_t phys, pgprot_t prot);
-
-#include <asm-generic/fixmap.h>
-#endif /* __ASM_NDS32_FIXMAP_H */

arch/nds32/include/asm/fpu.h

-/* SPDX-License-Identifier: GPL-2.0 */
-/* Copyright (C) 2005-2018 Andes Technology Corporation */
-
-#ifndef __ASM_NDS32_FPU_H
-#define __ASM_NDS32_FPU_H
-
-#if IS_ENABLED(CONFIG_FPU)
-#ifndef __ASSEMBLY__
-#include <linux/sched/task_stack.h>
-#include <linux/preempt.h>
-#include <asm/ptrace.h>
-
-extern bool has_fpu;
-
-extern void save_fpu(struct task_struct *__tsk);
-extern void load_fpu(const struct fpu_struct *fpregs);
-extern bool do_fpu_exception(unsigned int subtype, struct pt_regs *regs);
-extern int do_fpuemu(struct pt_regs *regs, struct fpu_struct *fpu);
-
-#define test_tsk_fpu(regs)	(regs->fucop_ctl & FUCOP_CTL_mskCP0EN)
-
-/*
- * Initially load the FPU with signalling NANS.  This bit pattern
- * has the property that no matter whether considered as single or as
- * double precision, it still represents a signalling NAN.
- */
-
-#define sNAN64    0xFFFFFFFFFFFFFFFFULL
-#define sNAN32    0xFFFFFFFFUL
-
-#if IS_ENABLED(CONFIG_SUPPORT_DENORMAL_ARITHMETIC)
-/*
- * Denormalized number is unsupported by nds32 FPU. Hence the operation
- * is treated as underflow cases when the final result is a denormalized
- * number. To enhance precision, underflow exception trap should be
- * enabled by default and kerenl will re-execute it by fpu emulator
- * when getting underflow exception.
- */
-#define FPCSR_INIT  (FPCSR_mskUDFE | FPCSR_mskIEXE)
-#else
-#define FPCSR_INIT  0x0UL
-#endif
-
-extern const struct fpu_struct init_fpuregs;
-
-static inline void disable_ptreg_fpu(struct pt_regs *regs)
-{
-	regs->fucop_ctl &= ~FUCOP_CTL_mskCP0EN;
-}
-
-static inline void enable_ptreg_fpu(struct pt_regs *regs)
-{
-	regs->fucop_ctl |= FUCOP_CTL_mskCP0EN;
-}
-
-static inline void enable_fpu(void)
-{
-	unsigned long fucop_ctl;
-
-	fucop_ctl = __nds32__mfsr(NDS32_SR_FUCOP_CTL) | FUCOP_CTL_mskCP0EN;
-	__nds32__mtsr(fucop_ctl, NDS32_SR_FUCOP_CTL);
-	__nds32__isb();
-}
-
-static inline void disable_fpu(void)
-{
-	unsigned long fucop_ctl;
-
-	fucop_ctl = __nds32__mfsr(NDS32_SR_FUCOP_CTL) & ~FUCOP_CTL_mskCP0EN;
-	__nds32__mtsr(fucop_ctl, NDS32_SR_FUCOP_CTL);
-	__nds32__isb();
-}
-
-static inline void lose_fpu(void)
-{
-	preempt_disable();
-#if IS_ENABLED(CONFIG_LAZY_FPU)
-	if (last_task_used_math == current) {
-		last_task_used_math = NULL;
-#else
-	if (test_tsk_fpu(task_pt_regs(current))) {
-#endif
-		save_fpu(current);
-	}
-	disable_ptreg_fpu(task_pt_regs(current));
-	preempt_enable();
-}
-
-static inline void own_fpu(void)
-{
-	preempt_disable();
-#if IS_ENABLED(CONFIG_LAZY_FPU)
-	if (last_task_used_math != current) {
-		if (last_task_used_math != NULL)
-			save_fpu(last_task_used_math);
-		load_fpu(&current->thread.fpu);
-		last_task_used_math = current;
-	}
-#else
-	if (!test_tsk_fpu(task_pt_regs(current))) {
-		load_fpu(&current->thread.fpu);
-	}
-#endif
-	enable_ptreg_fpu(task_pt_regs(current));
-	preempt_enable();
-}
-
-#if !IS_ENABLED(CONFIG_LAZY_FPU)
-static inline void unlazy_fpu(struct task_struct *tsk)
-{
-	preempt_disable();
-	if (test_tsk_fpu(task_pt_regs(tsk)))
-		save_fpu(tsk);
-	preempt_enable();
-}
-#endif /* !CONFIG_LAZY_FPU */
-static inline void clear_fpu(struct pt_regs *regs)
-{
-	preempt_disable();
-	if (test_tsk_fpu(regs))
-		disable_ptreg_fpu(regs);
-	preempt_enable();
-}
-#endif /* CONFIG_FPU */
-#endif /* __ASSEMBLY__ */
-#endif /* __ASM_NDS32_FPU_H */

arch/nds32/include/asm/fpuemu.h

-/* SPDX-License-Identifier: GPL-2.0 */
-/* Copyright (C) 2005-2018 Andes Technology Corporation */
-
-#ifndef __ARCH_NDS32_FPUEMU_H
-#define __ARCH_NDS32_FPUEMU_H
-
-/*
- * single precision
- */
-
-void fadds(void *ft, void *fa, void *fb);
-void fsubs(void *ft, void *fa, void *fb);
-void fmuls(void *ft, void *fa, void *fb);
-void fdivs(void *ft, void *fa, void *fb);
-void fs2d(void *ft, void *fa);
-void fs2si(void *ft, void *fa);
-void fs2si_z(void *ft, void *fa);
-void fs2ui(void *ft, void *fa);
-void fs2ui_z(void *ft, void *fa);
-void fsi2s(void *ft, void *fa);
-void fui2s(void *ft, void *fa);
-void fsqrts(void *ft, void *fa);
-void fnegs(void *ft, void *fa);
-int fcmps(void *ft, void *fa, void *fb, int cop);
-
-/*
- * double precision
- */
-void faddd(void *ft, void *fa, void *fb);
-void fsubd(void *ft, void *fa, void *fb);
-void fmuld(void *ft, void *fa, void *fb);
-void fdivd(void *ft, void *fa, void *fb);
-void fsqrtd(void *ft, void *fa);
-void fd2s(void *ft, void *fa);
-void fd2si(void *ft, void *fa);
-void fd2si_z(void *ft, void *fa);
-void fd2ui(void *ft, void *fa);
-void fd2ui_z(void *ft, void *fa);
-void fsi2d(void *ft, void *fa);
-void fui2d(void *ft, void *fa);
-void fnegd(void *ft, void *fa);
-int fcmpd(void *ft, void *fa, void *fb, int cop);
-
-#endif /* __ARCH_NDS32_FPUEMU_H */

arch/nds32/include/asm/ftrace.h

-/* SPDX-License-Identifier: GPL-2.0 */
-
-#ifndef __ASM_NDS32_FTRACE_H
-#define __ASM_NDS32_FTRACE_H
-
-#ifdef CONFIG_FUNCTION_TRACER
-
-#define HAVE_FUNCTION_GRAPH_FP_TEST
-
-#define MCOUNT_ADDR ((unsigned long)(_mcount))
-/* mcount call is composed of three instructions:
- * sethi + ori + jral
- */
-#define MCOUNT_INSN_SIZE 12
-
-extern void _mcount(unsigned long parent_ip);
-
-#ifdef CONFIG_DYNAMIC_FTRACE
-
-#define FTRACE_ADDR ((unsigned long)_ftrace_caller)
-
-#ifdef __NDS32_EL__
-#define INSN_NOP		0x09000040
-#define INSN_SIZE(insn)		(((insn & 0x00000080) == 0) ? 4 : 2)
-#define IS_SETHI(insn)		((insn & 0x000000fe) == 0x00000046)
-#define ENDIAN_CONVERT(insn)	be32_to_cpu(insn)
-#else /* __NDS32_EB__ */
-#define INSN_NOP		0x40000009
-#define INSN_SIZE(insn)		(((insn & 0x80000000) == 0) ? 4 : 2)
-#define IS_SETHI(insn)		((insn & 0xfe000000) == 0x46000000)
-#define ENDIAN_CONVERT(insn)	(insn)
-#endif
-
-extern void _ftrace_caller(unsigned long parent_ip);
-static inline unsigned long ftrace_call_adjust(unsigned long addr)
-{
-	return addr;
-}
-struct dyn_arch_ftrace {
-};
-
-#endif /* CONFIG_DYNAMIC_FTRACE */
-
-#endif /* CONFIG_FUNCTION_TRACER */
-
-#endif /* __ASM_NDS32_FTRACE_H */

arch/nds32/include/asm/futex.h

-/* SPDX-License-Identifier: GPL-2.0 */
-// Copyright (C) 2005-2017 Andes Technology Corporation
-
-#ifndef __NDS32_FUTEX_H__
-#define __NDS32_FUTEX_H__
-
-#include <linux/futex.h>
-#include <linux/uaccess.h>
-#include <asm/errno.h>
-
-#define __futex_atomic_ex_table(err_reg)			\
-	"	.pushsection __ex_table,\"a\"\n"		\
-	"	.align	3\n"					\
-	"	.long	1b, 4f\n"				\
-	"	.long	2b, 4f\n"				\
-	"	.popsection\n"					\
-	"	.pushsection .fixup,\"ax\"\n"			\
-	"4:	move	%0, " err_reg "\n"			\
-	"	b	3b\n"					\
-	"	.popsection"
-
-#define __futex_atomic_op(insn, ret, oldval, tmp, uaddr, oparg)	\
-	smp_mb();						\
-	asm volatile(					\
-	"	movi	$ta, #0\n"				\
-	"1:	llw	%1, [%2+$ta]\n"				\
-	"	" insn "\n"					\
-	"2:	scw	%0, [%2+$ta]\n"				\
-	"	beqz	%0, 1b\n"				\
-	"	movi	%0, #0\n"				\
-	"3:\n"							\
-	__futex_atomic_ex_table("%4")				\
-	: "=&r" (ret), "=&r" (oldval)				\
-	: "r" (uaddr), "r" (oparg), "i" (-EFAULT)		\
-	: "cc", "memory")
-static inline int
-futex_atomic_cmpxchg_inatomic(u32 * uval, u32 __user * uaddr,
-			      u32 oldval, u32 newval)
-{
-	int ret = 0;
-	u32 val, tmp, flags;
-
-	if (!access_ok(uaddr, sizeof(u32)))
-		return -EFAULT;
-
-	smp_mb();
-	asm volatile ("       movi    $ta, #0\n"
-		      "1:     llw     %1, [%6 + $ta]\n"
-		      "       sub     %3, %1, %4\n"
-		      "       cmovz   %2, %5, %3\n"
-		      "       cmovn   %2, %1, %3\n"
-		      "2:     scw     %2, [%6 + $ta]\n"
-		      "       beqz    %2, 1b\n"
-		      "3:\n                   " __futex_atomic_ex_table("%7")
-		      :"+&r"(ret), "=&r"(val), "=&r"(tmp), "=&r"(flags)
-		      :"r"(oldval), "r"(newval), "r"(uaddr), "i"(-EFAULT)
-		      :"$ta", "memory");
-	smp_mb();
-
-	*uval = val;
-	return ret;
-}
-
-static inline int
-arch_futex_atomic_op_inuser(int op, int oparg, int *oval, u32 __user *uaddr)
-{
-	int oldval = 0, ret;
-
-	if (!access_ok(uaddr, sizeof(u32)))
-		return -EFAULT;
-	switch (op) {
-	case FUTEX_OP_SET:
-		__futex_atomic_op("move	%0, %3", ret, oldval, tmp, uaddr,
-				  oparg);
-		break;
-	case FUTEX_OP_ADD:
-		__futex_atomic_op("add	%0, %1, %3", ret, oldval, tmp, uaddr,
-				  oparg);
-		break;
-	case FUTEX_OP_OR:
-		__futex_atomic_op("or	%0, %1, %3", ret, oldval, tmp, uaddr,
-				  oparg);
-		break;
-	case FUTEX_OP_ANDN:
-		__futex_atomic_op("and	%0, %1, %3", ret, oldval, tmp, uaddr,
-				  ~oparg);
-		break;
-	case FUTEX_OP_XOR:
-		__futex_atomic_op("xor	%0, %1, %3", ret, oldval, tmp, uaddr,
-				  oparg);
-		break;
-	default:
-		ret = -ENOSYS;
-	}
-
-	if (!ret)
-		*oval = oldval;
-
-	return ret;
-}
-#endif /* __NDS32_FUTEX_H__ */

arch/nds32/include/asm/highmem.h

-/* SPDX-License-Identifier: GPL-2.0 */
-// Copyright (C) 2005-2017 Andes Technology Corporation
-
-#ifndef _ASM_HIGHMEM_H
-#define _ASM_HIGHMEM_H
-
-#include <asm/proc-fns.h>
-#include <asm/fixmap.h>
-
-/*
- * Right now we initialize only a single pte table. It can be extended
- * easily, subsequent pte tables have to be allocated in one physical
- * chunk of RAM.
- */
-/*
- * Ordering is (from lower to higher memory addresses):
- *
- * high_memory
- *			Persistent kmap area
- * PKMAP_BASE
- *			fixed_addresses
- * FIXADDR_START
- * FIXADDR_TOP
- *			Vmalloc area
- * VMALLOC_START
- * VMALLOC_END
- */
-#define PKMAP_BASE		((FIXADDR_START - PGDIR_SIZE) & (PGDIR_MASK))
-#define LAST_PKMAP		PTRS_PER_PTE
-#define LAST_PKMAP_MASK		(LAST_PKMAP - 1)
-#define PKMAP_NR(virt)		(((virt) - (PKMAP_BASE)) >> PAGE_SHIFT)
-#define PKMAP_ADDR(nr)		(PKMAP_BASE + ((nr) << PAGE_SHIFT))
-
-static inline void flush_cache_kmaps(void)
-{
-	cpu_dcache_wbinval_all();
-}
-
-/* declarations for highmem.c */
-extern unsigned long highstart_pfn, highend_pfn;
-
-extern pte_t *pkmap_page_table;
-
-extern void kmap_init(void);
-
-/*
- * FIXME: The below looks broken vs. a kmap_atomic() in task context which
- * is interupted and another kmap_atomic() happens in interrupt context.
- * But what do I know about nds32. -- tglx
- */
-#define arch_kmap_local_post_map(vaddr, pteval)			\
-	do {							\
-		__nds32__tlbop_inv(vaddr);			\
-		__nds32__mtsr_dsb(vaddr, NDS32_SR_TLB_VPN);	\
-		__nds32__tlbop_rwr(pteval);			\
-		__nds32__isb();					\
-	} while (0)
-
-#define arch_kmap_local_pre_unmap(vaddr)			\
-	do {							\
-		__nds32__tlbop_inv(vaddr);			\
-		__nds32__isb();					\
-	} while (0)
-
-#endif

arch/nds32/include/asm/io.h

-/* SPDX-License-Identifier: GPL-2.0 */
-// Copyright (C) 2005-2017 Andes Technology Corporation
-
-#ifndef __ASM_NDS32_IO_H
-#define __ASM_NDS32_IO_H
-
-#include <linux/types.h>
-
-#define __raw_writeb __raw_writeb
-static inline void __raw_writeb(u8 val, volatile void __iomem *addr)
-{
-	asm volatile("sbi %0, [%1]" : : "r" (val), "r" (addr));
-}
-
-#define __raw_writew __raw_writew
-static inline void __raw_writew(u16 val, volatile void __iomem *addr)
-{
-	asm volatile("shi %0, [%1]" : : "r" (val), "r" (addr));
-}
-
-#define __raw_writel __raw_writel
-static inline void __raw_writel(u32 val, volatile void __iomem *addr)
-{
-	asm volatile("swi %0, [%1]" : : "r" (val), "r" (addr));
-}
-
-#define __raw_readb __raw_readb
-static inline u8 __raw_readb(const volatile void __iomem *addr)
-{
-	u8 val;
-
-	asm volatile("lbi %0, [%1]" : "=r" (val) : "r" (addr));
-	return val;
-}
-
-#define __raw_readw __raw_readw
-static inline u16 __raw_readw(const volatile void __iomem *addr)
-{
-	u16 val;
-
-	asm volatile("lhi %0, [%1]" : "=r" (val) : "r" (addr));
-	return val;
-}
-
-#define __raw_readl __raw_readl
-static inline u32 __raw_readl(const volatile void __iomem *addr)
-{
-	u32 val;
-
-	asm volatile("lwi %0, [%1]" : "=r" (val) : "r" (addr));
-	return val;
-}
-
-#define __iormb()               rmb()
-#define __iowmb()               wmb()
-
-/*
- * {read,write}{b,w,l,q}_relaxed() are like the regular version, but
- * are not guaranteed to provide ordering against spinlocks or memory
- * accesses.
- */
-
-#define readb_relaxed(c)	({ u8  __v = __raw_readb(c); __v; })
-#define readw_relaxed(c)	({ u16 __v = le16_to_cpu((__force __le16)__raw_readw(c)); __v; })
-#define readl_relaxed(c)	({ u32 __v = le32_to_cpu((__force __le32)__raw_readl(c)); __v; })
-#define writeb_relaxed(v,c)	((void)__raw_writeb((v),(c)))
-#define writew_relaxed(v,c)	((void)__raw_writew((__force u16)cpu_to_le16(v),(c)))
-#define writel_relaxed(v,c)	((void)__raw_writel((__force u32)cpu_to_le32(v),(c)))
-
-/*
- * {read,write}{b,w,l,q}() access little endian memory and return result in
- * native endianness.
- */
-#define readb(c)	({ u8  __v = readb_relaxed(c); __iormb(); __v; })
-#define readw(c)	({ u16 __v = readw_relaxed(c); __iormb(); __v; })
-#define readl(c)	({ u32 __v = readl_relaxed(c); __iormb(); __v; })
-
-#define writeb(v,c)	({ __iowmb(); writeb_relaxed((v),(c)); })
-#define writew(v,c)	({ __iowmb(); writew_relaxed((v),(c)); })
-#define writel(v,c)	({ __iowmb(); writel_relaxed((v),(c)); })
-
-#include <asm-generic/io.h>
-
-#endif /* __ASM_NDS32_IO_H */

arch/nds32/include/asm/irqflags.h

-/* SPDX-License-Identifier: GPL-2.0 */
-// Copyright (C) 2005-2017 Andes Technology Corporation
-
-#include <asm/nds32.h>
-#include <nds32_intrinsic.h>
-
-#define arch_local_irq_disable()	\
-	GIE_DISABLE();
-
-#define arch_local_irq_enable()	\
-	GIE_ENABLE();
-static inline unsigned long arch_local_irq_save(void)
-{
-	unsigned long flags;
-	flags = __nds32__mfsr(NDS32_SR_PSW) & PSW_mskGIE;
-	GIE_DISABLE();
-	return flags;
-}
-
-static inline unsigned long arch_local_save_flags(void)
-{
-	unsigned long flags;
-	flags = __nds32__mfsr(NDS32_SR_PSW) & PSW_mskGIE;
-	return flags;
-}
-
-static inline void arch_local_irq_restore(unsigned long flags)
-{
-	if(flags)
-		GIE_ENABLE();
-}
-
-static inline int arch_irqs_disabled_flags(unsigned long flags)
-{
-	return !flags;
-}
-
-static inline int arch_irqs_disabled(void)
-{
-	return arch_irqs_disabled_flags(arch_local_save_flags());
-}

arch/nds32/include/asm/l2_cache.h

-/* SPDX-License-Identifier: GPL-2.0 */
-// Copyright (C) 2005-2017 Andes Technology Corporation
-
-#ifndef L2_CACHE_H
-#define L2_CACHE_H
-
-/* CCTL_CMD_OP */
-#define L2_CA_CONF_OFF		0x0
-#define L2_IF_CONF_OFF		0x4
-#define L2CC_SETUP_OFF		0x8
-#define L2CC_PROT_OFF		0xC
-#define L2CC_CTRL_OFF		0x10
-#define L2_INT_EN_OFF           0x20
-#define L2_STA_OFF              0x24
-#define RDERR_ADDR_OFF		0x28
-#define WRERR_ADDR_OFF		0x2c
-#define EVDPTERR_ADDR_OFF	0x30
-#define IMPL3ERR_ADDR_OFF	0x34
-#define L2_CNT0_CTRL_OFF        0x40
-#define L2_EVNT_CNT0_OFF        0x44
-#define L2_CNT1_CTRL_OFF        0x48
-#define L2_EVNT_CNT1_OFF        0x4c
-#define L2_CCTL_CMD_OFF		0x60
-#define L2_CCTL_STATUS_OFF	0x64
-#define L2_LINE_TAG_OFF		0x68
-#define L2_LINE_DPT_OFF		0x70
-
-#define CCTL_CMD_L2_IX_INVAL    0x0
-#define CCTL_CMD_L2_PA_INVAL    0x1
-#define CCTL_CMD_L2_IX_WB       0x2
-#define CCTL_CMD_L2_PA_WB       0x3
-#define CCTL_CMD_L2_PA_WBINVAL  0x5
-#define CCTL_CMD_L2_SYNC        0xa
-
-/* CCTL_CMD_TYPE */
-#define CCTL_SINGLE_CMD         0
-#define CCTL_BLOCK_CMD          0x10
-#define CCTL_ALL_CMD		0x10
-
-/******************************************************************************
- * L2_CA_CONF (Cache architecture configuration)
- *****************************************************************************/
-#define L2_CA_CONF_offL2SET		0
-#define L2_CA_CONF_offL2WAY		4
-#define L2_CA_CONF_offL2CLSZ            8
-#define L2_CA_CONF_offL2DW		11
-#define L2_CA_CONF_offL2PT		14
-#define L2_CA_CONF_offL2VER		16
-
-#define L2_CA_CONF_mskL2SET	(0xFUL << L2_CA_CONF_offL2SET)
-#define L2_CA_CONF_mskL2WAY	(0xFUL << L2_CA_CONF_offL2WAY)
-#define L2_CA_CONF_mskL2CLSZ    (0x7UL << L2_CA_CONF_offL2CLSZ)
-#define L2_CA_CONF_mskL2DW	(0x7UL << L2_CA_CONF_offL2DW)
-#define L2_CA_CONF_mskL2PT	(0x3UL << L2_CA_CONF_offL2PT)
-#define L2_CA_CONF_mskL2VER	(0xFFFFUL << L2_CA_CONF_offL2VER)
-
-/******************************************************************************
- * L2CC_SETUP (L2CC Setup register)
- *****************************************************************************/
-#define L2CC_SETUP_offPART              0
-#define L2CC_SETUP_mskPART              (0x3UL << L2CC_SETUP_offPART)
-#define L2CC_SETUP_offDDLATC            4
-#define L2CC_SETUP_mskDDLATC            (0x3UL << L2CC_SETUP_offDDLATC)
-#define L2CC_SETUP_offTDLATC            8
-#define L2CC_SETUP_mskTDLATC            (0x3UL << L2CC_SETUP_offTDLATC)
-
-/******************************************************************************
- * L2CC_PROT (L2CC Protect register)
- *****************************************************************************/
-#define L2CC_PROT_offMRWEN              31
-#define L2CC_PROT_mskMRWEN      (0x1UL << L2CC_PROT_offMRWEN)
-
-/******************************************************************************
- * L2_CCTL_STATUS_Mn (The L2CCTL command working status for Master n)
- *****************************************************************************/
-#define L2CC_CTRL_offEN                 31
-#define L2CC_CTRL_mskEN                 (0x1UL << L2CC_CTRL_offEN)
-
-/******************************************************************************
- * L2_CCTL_STATUS_Mn (The L2CCTL command working status for Master n)
- *****************************************************************************/
-#define L2_CCTL_STATUS_offCMD_COMP      31
-#define L2_CCTL_STATUS_mskCMD_COMP      (0x1 << L2_CCTL_STATUS_offCMD_COMP)
-
-extern void __iomem *atl2c_base;
-#include <linux/smp.h>
-#include <asm/io.h>
-#include <asm/bitfield.h>
-
-#define L2C_R_REG(offset)               readl(atl2c_base + offset)
-#define L2C_W_REG(offset, value)        writel(value, atl2c_base + offset)
-
-#define L2_CMD_RDY()    \
-        do{;}while((L2C_R_REG(L2_CCTL_STATUS_OFF) & L2_CCTL_STATUS_mskCMD_COMP) == 0)
-
-static inline unsigned long L2_CACHE_SET(void)
-{
-	return 64 << ((L2C_R_REG(L2_CA_CONF_OFF) & L2_CA_CONF_mskL2SET) >>
-		      L2_CA_CONF_offL2SET);
-}
-
-static inline unsigned long L2_CACHE_WAY(void)
-{
-	return 1 +
-	    ((L2C_R_REG(L2_CA_CONF_OFF) & L2_CA_CONF_mskL2WAY) >>
-	     L2_CA_CONF_offL2WAY);
-}
-
-static inline unsigned long L2_CACHE_LINE_SIZE(void)
-{
-
-	return 4 << ((L2C_R_REG(L2_CA_CONF_OFF) & L2_CA_CONF_mskL2CLSZ) >>
-		     L2_CA_CONF_offL2CLSZ);
-}
-
-static inline unsigned long GET_L2CC_CTRL_CPU(unsigned long cpu)
-{
-	if (cpu == smp_processor_id())
-		return L2C_R_REG(L2CC_CTRL_OFF);
-	return L2C_R_REG(L2CC_CTRL_OFF + (cpu << 8));
-}
-
-static inline void SET_L2CC_CTRL_CPU(unsigned long cpu, unsigned long val)
-{
-	if (cpu == smp_processor_id())
-		L2C_W_REG(L2CC_CTRL_OFF, val);
-	else
-		L2C_W_REG(L2CC_CTRL_OFF + (cpu << 8), val);
-}
-
-static inline unsigned long GET_L2CC_STATUS_CPU(unsigned long cpu)
-{
-	if (cpu == smp_processor_id())
-		return L2C_R_REG(L2_CCTL_STATUS_OFF);
-	return L2C_R_REG(L2_CCTL_STATUS_OFF + (cpu << 8));
-}
-#endif

arch/nds32/include/asm/linkage.h

-/* SPDX-License-Identifier: GPL-2.0 */
-// Copyright (C) 2005-2017 Andes Technology Corporation
-
-#ifndef __ASM_LINKAGE_H
-#define __ASM_LINKAGE_H
-
-/* This file is required by include/linux/linkage.h */
-#define __ALIGN .align 2
-#define __ALIGN_STR ".align 2"
-
-#endif

arch/nds32/include/asm/memory.h

-/* SPDX-License-Identifier: GPL-2.0 */
-// Copyright (C) 2005-2017 Andes Technology Corporation
-
-#ifndef __ASM_NDS32_MEMORY_H
-#define __ASM_NDS32_MEMORY_H
-
-#include <linux/compiler.h>
-#include <linux/sizes.h>
-
-#ifndef __ASSEMBLY__
-#include <asm/page.h>
-#endif
-
-#ifndef PHYS_OFFSET
-#define PHYS_OFFSET     (0x0)
-#endif
-
-/*
- * TASK_SIZE - the maximum size of a user space task.
- * TASK_UNMAPPED_BASE - the lower boundary of the mmap VM area
- */
-#define TASK_SIZE		((CONFIG_PAGE_OFFSET) - (SZ_32M))
-#define TASK_UNMAPPED_BASE	ALIGN(TASK_SIZE / 3, SZ_32M)
-#define PAGE_OFFSET		(CONFIG_PAGE_OFFSET)
-
-/*
- * Physical vs virtual RAM address space conversion.  These are
- * private definitions which should NOT be used outside memory.h
- * files.  Use virt_to_phys/phys_to_virt/__pa/__va instead.
- */
-#ifndef __virt_to_phys
-#define __virt_to_phys(x)	((x) - PAGE_OFFSET + PHYS_OFFSET)
-#define __phys_to_virt(x)	((x) - PHYS_OFFSET + PAGE_OFFSET)
-#endif
-
-/*
- * The module space lives between the addresses given by TASK_SIZE
- * and PAGE_OFFSET - it must be within 32MB of the kernel text.
- */
-#define MODULES_END	(PAGE_OFFSET)
-#define MODULES_VADDR	(MODULES_END - SZ_32M)
-
-#if TASK_SIZE > MODULES_VADDR
-#error Top of user space clashes with start of module space
-#endif
-
-#ifndef __ASSEMBLY__
-
-/*
- * PFNs are used to describe any physical page; this means
- * PFN 0 == physical address 0.
- *
- * This is the PFN of the first RAM page in the kernel
- * direct-mapped view.  We assume this is the first page
- * of RAM in the mem_map as well.
- */
-#define PHYS_PFN_OFFSET	(PHYS_OFFSET >> PAGE_SHIFT)
-
-/*
- * Drivers should NOT use these either.
- */
-#define __pa(x)			__virt_to_phys((unsigned long)(x))
-#define __va(x)			((void *)__phys_to_virt((unsigned long)(x)))
-
-/*
- * Conversion between a struct page and a physical address.
- *
- * Note: when converting an unknown physical address to a
- * struct page, the resulting pointer must be validated
- * using VALID_PAGE().  It must return an invalid struct page
- * for any physical address not corresponding to a system
- * RAM address.
- *
- *  pfn_valid(pfn)	indicates whether a PFN number is valid
- *
- *  virt_to_page(k)	convert a _valid_ virtual address to struct page *
- *  virt_addr_valid(k)	indicates whether a virtual address is valid
- */
-#define ARCH_PFN_OFFSET		PHYS_PFN_OFFSET
-#define pfn_valid(pfn)		((pfn) >= PHYS_PFN_OFFSET && (pfn) < (PHYS_PFN_OFFSET + max_mapnr))
-
-#define virt_to_page(kaddr)	(pfn_to_page(__pa(kaddr) >> PAGE_SHIFT))
-#define virt_addr_valid(kaddr)	((unsigned long)(kaddr) >= PAGE_OFFSET && (unsigned long)(kaddr) < (unsigned long)high_memory)
-
-#define page_to_phys(page)	(page_to_pfn(page) << PAGE_SHIFT)
-
-#endif
-
-#include <asm-generic/memory_model.h>
-
-#endif

arch/nds32/include/asm/mmu.h

-/* SPDX-License-Identifier: GPL-2.0 */
-// Copyright (C) 2005-2017 Andes Technology Corporation
-
-#ifndef __NDS32_MMU_H
-#define __NDS32_MMU_H
-
-typedef struct {
-	unsigned int id;
-	void *vdso;
-} mm_context_t;
-
-#endif

arch/nds32/include/asm/mmu_context.h

-/* SPDX-License-Identifier: GPL-2.0 */
-// Copyright (C) 2005-2017 Andes Technology Corporation
-
-#ifndef __ASM_NDS32_MMU_CONTEXT_H
-#define __ASM_NDS32_MMU_CONTEXT_H
-
-#include <linux/spinlock.h>
-#include <asm/tlbflush.h>
-#include <asm/proc-fns.h>
-#include <asm-generic/mm_hooks.h>
-
-#define init_new_context init_new_context
-static inline int
-init_new_context(struct task_struct *tsk, struct mm_struct *mm)
-{
-	mm->context.id = 0;
-	return 0;
-}
-
-#define CID_BITS	9
-extern spinlock_t cid_lock;
-extern unsigned int cpu_last_cid;
-
-static inline void __new_context(struct mm_struct *mm)
-{
-	unsigned int cid;
-	unsigned long flags;
-
-	spin_lock_irqsave(&cid_lock, flags);
-	cid = cpu_last_cid;
-	cpu_last_cid += 1 << TLB_MISC_offCID;
-	if (cpu_last_cid == 0)
-		cpu_last_cid = 1 << TLB_MISC_offCID << CID_BITS;
-
-	if ((cid & TLB_MISC_mskCID) == 0)
-		flush_tlb_all();
-	spin_unlock_irqrestore(&cid_lock, flags);
-
-	mm->context.id = cid;
-}
-
-static inline void check_context(struct mm_struct *mm)
-{
-	if (unlikely
-	    ((mm->context.id ^ cpu_last_cid) >> TLB_MISC_offCID >> CID_BITS))
-		__new_context(mm);
-}
-
-static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
-			     struct task_struct *tsk)
-{
-	unsigned int cpu = smp_processor_id();
-
-	if (!cpumask_test_and_set_cpu(cpu, mm_cpumask(next)) || prev != next) {
-		check_context(next);
-		cpu_switch_mm(next);
-	}
-}
-
-#include <asm-generic/mmu_context.h>
-
-#endif

arch/nds32/include/asm/nds32.h

-/* SPDX-License-Identifier: GPL-2.0 */
-// Copyright (C) 2005-2017 Andes Technology Corporation
-
-#ifndef _ASM_NDS32_NDS32_H_
-#define _ASM_NDS32_NDS32_H_
-
-#include <asm/bitfield.h>
-#include <asm/cachectl.h>
-
-#ifndef __ASSEMBLY__
-#include <linux/init.h>
-#include <asm/barrier.h>
-#include <nds32_intrinsic.h>
-
-#ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
-#define FP_OFFSET (-3)
-#else
-#define FP_OFFSET (-2)
-#endif
-#define LP_OFFSET (-1)
-
-extern void __init early_trap_init(void);
-static inline void GIE_ENABLE(void)
-{
-	mb();
-	__nds32__gie_en();
-}
-
-static inline void GIE_DISABLE(void)
-{
-	mb();
-	__nds32__gie_dis();
-}
-
-static inline unsigned long CACHE_SET(unsigned char cache)
-{
-
-	if (cache == ICACHE)
-		return 64 << ((__nds32__mfsr(NDS32_SR_ICM_CFG) & ICM_CFG_mskISET) >>
-			      ICM_CFG_offISET);
-	else
-		return 64 << ((__nds32__mfsr(NDS32_SR_DCM_CFG) & DCM_CFG_mskDSET) >>
-			      DCM_CFG_offDSET);
-}
-
-static inline unsigned long CACHE_WAY(unsigned char cache)
-{
-
-	if (cache == ICACHE)
-		return 1 +
-		    ((__nds32__mfsr(NDS32_SR_ICM_CFG) & ICM_CFG_mskIWAY) >> ICM_CFG_offIWAY);
-	else
-		return 1 +
-		    ((__nds32__mfsr(NDS32_SR_DCM_CFG) & DCM_CFG_mskDWAY) >> DCM_CFG_offDWAY);
-}
-
-static inline unsigned long CACHE_LINE_SIZE(unsigned char cache)
-{
-
-	if (cache == ICACHE)
-		return 8 <<
-		    (((__nds32__mfsr(NDS32_SR_ICM_CFG) & ICM_CFG_mskISZ) >> ICM_CFG_offISZ) - 1);
-	else
-		return 8 <<
-		    (((__nds32__mfsr(NDS32_SR_DCM_CFG) & DCM_CFG_mskDSZ) >> DCM_CFG_offDSZ) - 1);
-}
-
-#endif /* __ASSEMBLY__ */
-
-#define IVB_BASE		PHYS_OFFSET	/* in user space for intr/exc/trap/break table base, 64KB aligned
-						 * We defined at the start of the physical memory */
-
-/* dispatched sub-entry exception handler numbering */
-#define RD_PROT			0	/* read protrection */
-#define WRT_PROT		1	/* write protection */
-#define NOEXEC			2	/* non executable */
-#define PAGE_MODIFY		3	/* page modified */
-#define ACC_BIT			4	/* access bit */
-#define RESVED_PTE		5	/* reserved PTE attribute */
-/* reserved 6 ~ 16 */
-
-#endif /* _ASM_NDS32_NDS32_H_ */

arch/nds32/include/asm/nds32_fpu_inst.h

-/* SPDX-License-Identifier: GPL-2.0 */
-/* Copyright (C) 2005-2018 Andes Technology Corporation */
-
-#ifndef __NDS32_FPU_INST_H
-#define __NDS32_FPU_INST_H
-
-#define cop0_op	0x35
-
-/*
- * COP0 field of opcodes.
- */
-#define fs1_op	0x0
-#define fs2_op  0x4
-#define fd1_op  0x8
-#define fd2_op  0xc
-
-/*
- * FS1 opcode.
- */
-enum fs1 {
-	fadds_op, fsubs_op, fcpynss_op, fcpyss_op,
-	fmadds_op, fmsubs_op, fcmovns_op, fcmovzs_op,
-	fnmadds_op, fnmsubs_op,
-	fmuls_op = 0xc, fdivs_op,
-	fs1_f2op_op = 0xf
-};
-
-/*
- * FS1/F2OP opcode.
- */
-enum fs1_f2 {
-	fs2d_op, fsqrts_op,
-	fui2s_op = 0x8, fsi2s_op = 0xc,
-	fs2ui_op = 0x10, fs2ui_z_op = 0x14,
-	fs2si_op = 0x18, fs2si_z_op = 0x1c
-};
-
-/*
- * FS2 opcode.
- */
-enum fs2 {
-	fcmpeqs_op, fcmpeqs_e_op, fcmplts_op, fcmplts_e_op,
-	fcmples_op, fcmples_e_op, fcmpuns_op, fcmpuns_e_op
-};
-
-/*
- * FD1 opcode.
- */
-enum fd1 {
-	faddd_op, fsubd_op, fcpynsd_op, fcpysd_op,
-	fmaddd_op, fmsubd_op, fcmovnd_op, fcmovzd_op,
-	fnmaddd_op, fnmsubd_op,
-	fmuld_op = 0xc, fdivd_op, fd1_f2op_op = 0xf
-};
-
-/*
- * FD1/F2OP opcode.
- */
-enum fd1_f2 {
-	fd2s_op, fsqrtd_op,
-	fui2d_op = 0x8, fsi2d_op = 0xc,
-	fd2ui_op = 0x10, fd2ui_z_op = 0x14,
-	fd2si_op = 0x18, fd2si_z_op = 0x1c
-};
-
-/*
- * FD2 opcode.
- */
-enum fd2 {
-	fcmpeqd_op, fcmpeqd_e_op, fcmpltd_op, fcmpltd_e_op,
-	fcmpled_op, fcmpled_e_op, fcmpund_op, fcmpund_e_op
-};
-
-#define NDS32Insn(x) x
-
-#define I_OPCODE_off			25
-#define NDS32Insn_OPCODE(x)		(NDS32Insn(x) >> I_OPCODE_off)
-
-#define I_OPCODE_offRt			20
-#define I_OPCODE_mskRt			(0x1fUL << I_OPCODE_offRt)
-#define NDS32Insn_OPCODE_Rt(x) \
-	((NDS32Insn(x) & I_OPCODE_mskRt) >> I_OPCODE_offRt)
-
-#define I_OPCODE_offRa			15
-#define I_OPCODE_mskRa			(0x1fUL << I_OPCODE_offRa)
-#define NDS32Insn_OPCODE_Ra(x) \
-	((NDS32Insn(x) & I_OPCODE_mskRa) >> I_OPCODE_offRa)
-
-#define I_OPCODE_offRb			10
-#define I_OPCODE_mskRb			(0x1fUL << I_OPCODE_offRb)
-#define NDS32Insn_OPCODE_Rb(x) \
-	((NDS32Insn(x) & I_OPCODE_mskRb) >> I_OPCODE_offRb)
-
-#define I_OPCODE_offbit1014		10
-#define I_OPCODE_mskbit1014		(0x1fUL << I_OPCODE_offbit1014)
-#define NDS32Insn_OPCODE_BIT1014(x) \
-	((NDS32Insn(x) & I_OPCODE_mskbit1014) >> I_OPCODE_offbit1014)
-
-#define I_OPCODE_offbit69		6
-#define I_OPCODE_mskbit69		(0xfUL << I_OPCODE_offbit69)
-#define NDS32Insn_OPCODE_BIT69(x) \
-	((NDS32Insn(x) & I_OPCODE_mskbit69) >> I_OPCODE_offbit69)
-
-#define I_OPCODE_offCOP0		0
-#define I_OPCODE_mskCOP0		(0x3fUL << I_OPCODE_offCOP0)
-#define NDS32Insn_OPCODE_COP0(x) \
-	((NDS32Insn(x) & I_OPCODE_mskCOP0) >> I_OPCODE_offCOP0)
-
-#endif /* __NDS32_FPU_INST_H */

arch/nds32/include/asm/page.h

-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * Copyright (C) 2005-2017 Andes Technology Corporation
- */
-
-#ifndef _ASMNDS32_PAGE_H
-#define _ASMNDS32_PAGE_H
-
-#ifdef CONFIG_ANDES_PAGE_SIZE_4KB
-#define PAGE_SHIFT      12
-#endif
-#ifdef CONFIG_ANDES_PAGE_SIZE_8KB
-#define PAGE_SHIFT      13
-#endif
-#include <linux/const.h>
-#define PAGE_SIZE       (_AC(1,UL) << PAGE_SHIFT)
-#define PAGE_MASK       (~(PAGE_SIZE-1))
-
-#ifdef __KERNEL__
-
-#ifndef __ASSEMBLY__
-
-struct page;
-struct vm_area_struct;
-#ifdef CONFIG_CPU_CACHE_ALIASING
-extern void copy_user_highpage(struct page *to, struct page *from,
-			       unsigned long vaddr, struct vm_area_struct *vma);
-extern void clear_user_highpage(struct page *page, unsigned long vaddr);
-
-void copy_user_page(void *vto, void *vfrom, unsigned long vaddr,
-		    struct page *to);
-void clear_user_page(void *addr, unsigned long vaddr, struct page *page);
-#define __HAVE_ARCH_COPY_USER_HIGHPAGE
-#define clear_user_highpage	clear_user_highpage
-#else
-#define clear_user_page(page, vaddr, pg)        clear_page(page)
-#define copy_user_page(to, from, vaddr, pg)     copy_page(to, from)
-#endif
-
-void clear_page(void *page);
-void copy_page(void *to, void *from);
-
-typedef unsigned long pte_t;
-typedef unsigned long pgd_t;
-typedef unsigned long pgprot_t;
-
-#define pte_val(x)      (x)
-#define pgd_val(x)	(x)
-#define pgprot_val(x)   (x)
-
-#define __pte(x)        (x)
-#define __pgd(x)        (x)
-#define __pgprot(x)     (x)
-
-typedef struct page *pgtable_t;
-
-#include <asm/memory.h>
-#include <asm-generic/getorder.h>
-
-#endif /* !__ASSEMBLY__ */
-
-#endif /* __KERNEL__ */
-
-#endif

arch/nds32/include/asm/perf_event.h

-/* SPDX-License-Identifier: GPL-2.0 */
-/* Copyright (C) 2008-2018 Andes Technology Corporation */
-
-#ifndef __ASM_PERF_EVENT_H
-#define __ASM_PERF_EVENT_H
-
-/*
- * This file is request by Perf,
- * please refer to tools/perf/design.txt for more details
- */
-struct pt_regs;
-unsigned long perf_instruction_pointer(struct pt_regs *regs);
-unsigned long perf_misc_flags(struct pt_regs *regs);
-#define perf_misc_flags(regs)   perf_misc_flags(regs)
-
-#endif

arch/nds32/include/asm/pgalloc.h

-/* SPDX-License-Identifier: GPL-2.0 */
-// Copyright (C) 2005-2017 Andes Technology Corporation
-
-#ifndef _ASMNDS32_PGALLOC_H
-#define _ASMNDS32_PGALLOC_H
-
-#include <asm/processor.h>
-#include <asm/cacheflush.h>
-#include <asm/tlbflush.h>
-#include <asm/proc-fns.h>
-
-#define __HAVE_ARCH_PTE_ALLOC_ONE
-#include <asm-generic/pgalloc.h>	/* for pte_{alloc,free}_one */
-
-extern pgd_t *pgd_alloc(struct mm_struct *mm);
-extern void pgd_free(struct mm_struct *mm, pgd_t * pgd);
-
-static inline pgtable_t pte_alloc_one(struct mm_struct *mm)
-{
-	pgtable_t pte;
-
-	pte = __pte_alloc_one(mm, GFP_PGTABLE_USER);
-	if (pte)
-		cpu_dcache_wb_page((unsigned long)page_address(pte));
-
-	return pte;
-}
-
-/*
- * Populate the pmdp entry with a pointer to the pte.  This pmd is part
- * of the mm address space.
- *
- * Ensure that we always set both PMD entries.
- */
-static inline void
-pmd_populate_kernel(struct mm_struct *mm, pmd_t * pmdp, pte_t * ptep)
-{
-	unsigned long pte_ptr = (unsigned long)ptep;
-	unsigned long pmdval;
-
-	BUG_ON(mm != &init_mm);
-
-	/*
-	 * The pmd must be loaded with the physical
-	 * address of the PTE table
-	 */
-	pmdval = __pa(pte_ptr) | _PAGE_KERNEL_TABLE;
-	set_pmd(pmdp, __pmd(pmdval));
-}
-
-static inline void
-pmd_populate(struct mm_struct *mm, pmd_t * pmdp, pgtable_t ptep)
-{
-	unsigned long pmdval;
-
-	BUG_ON(mm == &init_mm);
-
-	pmdval = page_to_pfn(ptep) << PAGE_SHIFT | _PAGE_USER_TABLE;
-	set_pmd(pmdp, __pmd(pmdval));
-}
-
-#endif

arch/nds32/include/asm/pgtable.h

-/* SPDX-License-Identifier: GPL-2.0 */
-// Copyright (C) 2005-2017 Andes Technology Corporation
-
-#ifndef _ASMNDS32_PGTABLE_H
-#define _ASMNDS32_PGTABLE_H
-
-#include <asm-generic/pgtable-nopmd.h>
-#include <linux/sizes.h>
-
-#include <asm/memory.h>
-#include <asm/nds32.h>
-#ifndef __ASSEMBLY__
-#include <asm/fixmap.h>
-#include <nds32_intrinsic.h>
-#endif
-
-#ifdef CONFIG_ANDES_PAGE_SIZE_4KB
-#define PGDIR_SHIFT      22
-#define PTRS_PER_PGD     1024
-#define PTRS_PER_PTE     1024
-#endif
-
-#ifdef CONFIG_ANDES_PAGE_SIZE_8KB
-#define PGDIR_SHIFT      24
-#define PTRS_PER_PGD     256
-#define PTRS_PER_PTE     2048
-#endif
-
-#ifndef __ASSEMBLY__
-extern void __pte_error(const char *file, int line, unsigned long val);
-extern void __pgd_error(const char *file, int line, unsigned long val);
-
-#define pte_ERROR(pte)		__pte_error(__FILE__, __LINE__, pte_val(pte))
-#define pgd_ERROR(pgd)		__pgd_error(__FILE__, __LINE__, pgd_val(pgd))
-#endif /* !__ASSEMBLY__ */
-
-#define PMD_SIZE		(1UL << PMD_SHIFT)
-#define PMD_MASK		(~(PMD_SIZE-1))
-#define PGDIR_SIZE		(1UL << PGDIR_SHIFT)
-#define PGDIR_MASK		(~(PGDIR_SIZE-1))
-
-/*
- * This is the lowest virtual address we can permit any user space
- * mapping to be mapped at.  This is particularly important for
- * non-high vector CPUs.
- */
-#define FIRST_USER_ADDRESS	0x8000
-
-#ifdef CONFIG_HIGHMEM
-#define CONSISTENT_BASE		((PKMAP_BASE) - (SZ_2M))
-#define CONSISTENT_END		(PKMAP_BASE)
-#else
-#define CONSISTENT_BASE		(FIXADDR_START - SZ_2M)
-#define CONSISTENT_END		(FIXADDR_START)
-#endif
-#define CONSISTENT_OFFSET(x)	(((unsigned long)(x) - CONSISTENT_BASE) >> PAGE_SHIFT)
-
-#ifdef CONFIG_HIGHMEM
-#ifndef __ASSEMBLY__
-#include <asm/highmem.h>
-#endif
-#endif
-
-#define VMALLOC_RESERVE 	SZ_128M
-#define VMALLOC_END		(CONSISTENT_BASE - PAGE_SIZE)
-#define VMALLOC_START		((VMALLOC_END) - VMALLOC_RESERVE)
-#define VMALLOC_VMADDR(x)	((unsigned long)(x))
-#define MAXMEM			__pa(VMALLOC_START)
-#define MAXMEM_PFN		PFN_DOWN(MAXMEM)
-
-#define FIRST_USER_PGD_NR	0
-#define USER_PTRS_PER_PGD	((TASK_SIZE/PGDIR_SIZE) + FIRST_USER_PGD_NR)
-
-/* L2 PTE */
-#define _PAGE_V			(1UL << 0)
-
-#define _PAGE_M_XKRW            (0UL << 1)
-#define _PAGE_M_UR_KR		(1UL << 1)
-#define _PAGE_M_UR_KRW		(2UL << 1)
-#define _PAGE_M_URW_KRW		(3UL << 1)
-#define _PAGE_M_KR		(5UL << 1)
-#define _PAGE_M_KRW		(7UL << 1)
-
-#define _PAGE_D			(1UL << 4)
-#define _PAGE_E			(1UL << 5)
-#define _PAGE_A			(1UL << 6)
-#define _PAGE_G			(1UL << 7)
-
-#define _PAGE_C_DEV		(0UL << 8)
-#define _PAGE_C_DEV_WB		(1UL << 8)
-#define _PAGE_C_MEM		(2UL << 8)
-#define _PAGE_C_MEM_SHRD_WB	(4UL << 8)
-#define _PAGE_C_MEM_SHRD_WT	(5UL << 8)
-#define _PAGE_C_MEM_WB		(6UL << 8)
-#define _PAGE_C_MEM_WT		(7UL << 8)
-
-#define _PAGE_L			(1UL << 11)
-
-#define _HAVE_PAGE_L		(_PAGE_L)
-#define _PAGE_FILE		(1UL << 1)
-#define _PAGE_YOUNG		0
-#define _PAGE_M_MASK		_PAGE_M_KRW
-#define _PAGE_C_MASK		_PAGE_C_MEM_WT
-
-#ifdef CONFIG_SMP
-#ifdef CONFIG_CPU_DCACHE_WRITETHROUGH
-#define _PAGE_CACHE_SHRD	_PAGE_C_MEM_SHRD_WT
-#else
-#define _PAGE_CACHE_SHRD	_PAGE_C_MEM_SHRD_WB
-#endif
-#else
-#ifdef CONFIG_CPU_DCACHE_WRITETHROUGH
-#define _PAGE_CACHE_SHRD	_PAGE_C_MEM_WT
-#else
-#define _PAGE_CACHE_SHRD	_PAGE_C_MEM_WB
-#endif
-#endif
-
-#ifdef CONFIG_CPU_DCACHE_WRITETHROUGH
-#define _PAGE_CACHE		_PAGE_C_MEM_WT
-#else
-#define _PAGE_CACHE		_PAGE_C_MEM_WB
-#endif
-
-#define _PAGE_IOREMAP \
-	(_PAGE_V | _PAGE_M_KRW | _PAGE_D | _PAGE_G | _PAGE_C_DEV)
-
-/*
- * + Level 1 descriptor (PMD)
- */
-#define PMD_TYPE_TABLE		0
-
-#ifndef __ASSEMBLY__
-
-#define _PAGE_USER_TABLE     PMD_TYPE_TABLE
-#define _PAGE_KERNEL_TABLE   PMD_TYPE_TABLE
-
-#define PAGE_EXEC	__pgprot(_PAGE_V | _PAGE_M_XKRW | _PAGE_E)
-#define PAGE_NONE	__pgprot(_PAGE_V | _PAGE_M_KRW | _PAGE_A)
-#define PAGE_READ	__pgprot(_PAGE_V | _PAGE_M_UR_KR)
-#define PAGE_RDWR	__pgprot(_PAGE_V | _PAGE_M_URW_KRW | _PAGE_D)
-#define PAGE_COPY	__pgprot(_PAGE_V | _PAGE_M_UR_KR)
-
-#define PAGE_UXKRWX_V1	__pgprot(_PAGE_V | _PAGE_M_KRW | _PAGE_D | _PAGE_E | _PAGE_G | _PAGE_CACHE_SHRD)
-#define PAGE_UXKRWX_V2	__pgprot(_PAGE_V | _PAGE_M_XKRW | _PAGE_D | _PAGE_E | _PAGE_G | _PAGE_CACHE_SHRD)
-#define PAGE_URXKRWX_V2	__pgprot(_PAGE_V | _PAGE_M_UR_KRW | _PAGE_D | _PAGE_E | _PAGE_G | _PAGE_CACHE_SHRD)
-#define PAGE_CACHE_L1	__pgprot(_HAVE_PAGE_L | _PAGE_V | _PAGE_M_KRW | _PAGE_D | _PAGE_E | _PAGE_G | _PAGE_CACHE)
-#define PAGE_MEMORY	__pgprot(_HAVE_PAGE_L | _PAGE_V | _PAGE_M_KRW | _PAGE_D | _PAGE_E | _PAGE_G | _PAGE_CACHE_SHRD)
-#define PAGE_KERNEL	__pgprot(_PAGE_V | _PAGE_M_KRW | _PAGE_D | _PAGE_E | _PAGE_G | _PAGE_CACHE_SHRD)
-#define PAGE_SHARED	__pgprot(_PAGE_V | _PAGE_M_URW_KRW | _PAGE_D | _PAGE_CACHE_SHRD)
-#define PAGE_DEVICE    __pgprot(_PAGE_V | _PAGE_M_KRW | _PAGE_D | _PAGE_G | _PAGE_C_DEV)
-#endif /* __ASSEMBLY__ */
-
-/*         xwr */
-#define __P000  (PAGE_NONE | _PAGE_CACHE_SHRD)
-#define __P001  (PAGE_READ | _PAGE_CACHE_SHRD)
-#define __P010  (PAGE_COPY | _PAGE_CACHE_SHRD)
-#define __P011  (PAGE_COPY | _PAGE_CACHE_SHRD)
-#define __P100  (PAGE_EXEC | _PAGE_CACHE_SHRD)
-#define __P101  (PAGE_READ | _PAGE_E | _PAGE_CACHE_SHRD)
-#define __P110  (PAGE_COPY | _PAGE_E | _PAGE_CACHE_SHRD)
-#define __P111  (PAGE_COPY | _PAGE_E | _PAGE_CACHE_SHRD)
-
-#define __S000  (PAGE_NONE | _PAGE_CACHE_SHRD)
-#define __S001  (PAGE_READ | _PAGE_CACHE_SHRD)
-#define __S010  (PAGE_RDWR | _PAGE_CACHE_SHRD)
-#define __S011  (PAGE_RDWR | _PAGE_CACHE_SHRD)
-#define __S100  (PAGE_EXEC | _PAGE_CACHE_SHRD)
-#define __S101  (PAGE_READ | _PAGE_E | _PAGE_CACHE_SHRD)
-#define __S110  (PAGE_RDWR | _PAGE_E | _PAGE_CACHE_SHRD)
-#define __S111  (PAGE_RDWR | _PAGE_E | _PAGE_CACHE_SHRD)
-
-#ifndef __ASSEMBLY__
-/*
- * ZERO_PAGE is a global shared page that is always zero: used
- * for zero-mapped memory areas etc..
- */
-extern struct page *empty_zero_page;
-extern void paging_init(void);
-#define ZERO_PAGE(vaddr)	(empty_zero_page)
-
-#define pte_pfn(pte)		(pte_val(pte) >> PAGE_SHIFT)
-#define pfn_pte(pfn,prot)	(__pte(((pfn) << PAGE_SHIFT) | pgprot_val(prot)))
-
-#define pte_none(pte)	        !(pte_val(pte))
-#define pte_clear(mm,addr,ptep)	set_pte_at((mm),(addr),(ptep), __pte(0))
-#define pte_page(pte)		(pfn_to_page(pte_pfn(pte)))
-
-static unsigned long pmd_page_vaddr(pmd_t pmd)
-{
-	return ((unsigned long) __va(pmd_val(pmd) & PAGE_MASK));
-}
-
-#define set_pte_at(mm,addr,ptep,pteval) set_pte(ptep,pteval)
-/*
- * Set a level 1 translation table entry, and clean it out of
- * any caches such that the MMUs can load it correctly.
- */
-static inline void set_pmd(pmd_t * pmdp, pmd_t pmd)
-{
-
-	*pmdp = pmd;
-#if !defined(CONFIG_CPU_DCACHE_DISABLE) && !defined(CONFIG_CPU_DCACHE_WRITETHROUGH)
-	__asm__ volatile ("\n\tcctl %0, L1D_VA_WB"::"r" (pmdp):"memory");
-	__nds32__msync_all();
-	__nds32__dsb();
-#endif
-}
-
-/*
- * Set a PTE and flush it out
- */
-static inline void set_pte(pte_t * ptep, pte_t pte)
-{
-
-	*ptep = pte;
-#if !defined(CONFIG_CPU_DCACHE_DISABLE) && !defined(CONFIG_CPU_DCACHE_WRITETHROUGH)
-	__asm__ volatile ("\n\tcctl %0, L1D_VA_WB"::"r" (ptep):"memory");
-	__nds32__msync_all();
-	__nds32__dsb();
-#endif
-}
-
-/*
- * The following only work if pte_present() is true.
- * Undefined behaviour if not..
- */
-
-/*
- * pte_write: 	     this page is writeable for user mode
- * pte_read:         this page is readable for user mode
- * pte_kernel_write: this page is writeable for kernel mode
- *
- * We don't have pte_kernel_read because kernel always can read.
- *
- * */
-
-#define pte_present(pte)        (pte_val(pte) & _PAGE_V)
-#define pte_write(pte)          ((pte_val(pte) & _PAGE_M_MASK) == _PAGE_M_URW_KRW)
-#define pte_read(pte)		(((pte_val(pte) & _PAGE_M_MASK) == _PAGE_M_UR_KR) || \
-				((pte_val(pte) & _PAGE_M_MASK) == _PAGE_M_UR_KRW) || \
-				((pte_val(pte) & _PAGE_M_MASK) == _PAGE_M_URW_KRW))
-#define pte_kernel_write(pte)   (((pte_val(pte) & _PAGE_M_MASK) == _PAGE_M_URW_KRW) || \
-				((pte_val(pte) & _PAGE_M_MASK) == _PAGE_M_UR_KRW) || \
-				((pte_val(pte) & _PAGE_M_MASK) == _PAGE_M_KRW) || \
-				(((pte_val(pte) & _PAGE_M_MASK) == _PAGE_M_XKRW) && pte_exec(pte)))
-#define pte_exec(pte)		(pte_val(pte) & _PAGE_E)
-#define pte_dirty(pte)		(pte_val(pte) & _PAGE_D)
-#define pte_young(pte)		(pte_val(pte) & _PAGE_YOUNG)
-
-/*
- * The following only works if pte_present() is not true.
- */
-#define pte_file(pte)		(pte_val(pte) & _PAGE_FILE)
-#define pte_to_pgoff(x)		(pte_val(x) >> 2)
-#define pgoff_to_pte(x)		__pte(((x) << 2) | _PAGE_FILE)
-
-#define PTE_FILE_MAX_BITS	29
-
-#define PTE_BIT_FUNC(fn,op) \
-static inline pte_t pte_##fn(pte_t pte) { pte_val(pte) op; return pte; }
-
-static inline pte_t pte_wrprotect(pte_t pte)
-{
-	pte_val(pte) = pte_val(pte) & ~_PAGE_M_MASK;
-	pte_val(pte) = pte_val(pte) | _PAGE_M_UR_KR;
-	return pte;
-}
-
-static inline pte_t pte_mkwrite(pte_t pte)
-{
-	pte_val(pte) = pte_val(pte) & ~_PAGE_M_MASK;
-	pte_val(pte) = pte_val(pte) | _PAGE_M_URW_KRW;
-	return pte;
-}
-
-PTE_BIT_FUNC(exprotect, &=~_PAGE_E);
-PTE_BIT_FUNC(mkexec, |=_PAGE_E);
-PTE_BIT_FUNC(mkclean, &=~_PAGE_D);
-PTE_BIT_FUNC(mkdirty, |=_PAGE_D);
-PTE_BIT_FUNC(mkold, &=~_PAGE_YOUNG);
-PTE_BIT_FUNC(mkyoung, |=_PAGE_YOUNG);
-
-/*
- * Mark the prot value as uncacheable and unbufferable.
- */
-#define pgprot_noncached(prot)	   __pgprot((pgprot_val(prot)&~_PAGE_C_MASK) | _PAGE_C_DEV)
-#define pgprot_writecombine(prot)  __pgprot((pgprot_val(prot)&~_PAGE_C_MASK) | _PAGE_C_DEV_WB)
-
-#define pmd_none(pmd)         (pmd_val(pmd)&0x1)
-#define pmd_present(pmd)      (!pmd_none(pmd))
-#define	pmd_bad(pmd)	      pmd_none(pmd)
-
-#define copy_pmd(pmdpd,pmdps)	set_pmd((pmdpd), *(pmdps))
-#define pmd_clear(pmdp)		set_pmd((pmdp), __pmd(1))
-
-static inline pmd_t __mk_pmd(pte_t * ptep, unsigned long prot)
-{
-	unsigned long ptr = (unsigned long)ptep;
-	pmd_t pmd;
-
-	/*
-	 * The pmd must be loaded with the physical
-	 * address of the PTE table
-	 */
-
-	pmd_val(pmd) = __virt_to_phys(ptr) | prot;
-	return pmd;
-}
-
-#define pmd_page(pmd)        virt_to_page(__va(pmd_val(pmd)))
-
-/*
- * Permanent address of a page. We never have highmem, so this is trivial.
- */
-#define pages_to_mb(x)       ((x) >> (20 - PAGE_SHIFT))
-
-/*
- * Conversion functions: convert a page and protection to a page entry,
- * and a page entry and page directory to the page they refer to.
- */
-#define mk_pte(page,prot)	pfn_pte(page_to_pfn(page),prot)
-
-/*
- * The "pgd_xxx()" functions here are trivial for a folded two-level
- * setup: the pgd is never bad, and a pmd always exists (as it's folded
- * into the pgd entry)
- */
-#define pgd_none(pgd)		(0)
-#define pgd_bad(pgd)		(0)
-#define pgd_present(pgd)  	(1)
-#define pgd_clear(pgdp)		do { } while (0)
-
-#define page_pte_prot(page,prot)     	mk_pte(page, prot)
-#define page_pte(page)		        mk_pte(page, __pgprot(0))
-/*
- *     L1PTE = $mr1 + ((virt >> PMD_SHIFT) << 2);
- *     L2PTE = (((virt >> PAGE_SHIFT) & (PTRS_PER_PTE -1 )) << 2);
- *     PPN = (phys & 0xfffff000);
- *
-*/
-
-static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
-{
-	const unsigned long mask = 0xfff;
-	pte_val(pte) = (pte_val(pte) & ~mask) | (pgprot_val(newprot) & mask);
-	return pte;
-}
-
-extern pgd_t swapper_pg_dir[PTRS_PER_PGD];
-
-/* Encode and decode a swap entry.
- *
- * We support up to 32GB of swap on 4k machines
- */
-#define __swp_type(x)	 	     (((x).val >> 2) & 0x7f)
-#define __swp_offset(x)	   	     ((x).val >> 9)
-#define __swp_entry(type,offset)     ((swp_entry_t) { ((type) << 2) | ((offset) << 9) })
-#define __pte_to_swp_entry(pte)	     ((swp_entry_t) { pte_val(pte) })
-#define __swp_entry_to_pte(swp)	     ((pte_t) { (swp).val })
-
-/* Needs to be defined here and not in linux/mm.h, as it is arch dependent */
-#define kern_addr_valid(addr)	(1)
-
-/*
- * We provide our own arch_get_unmapped_area to cope with VIPT caches.
- */
-#define HAVE_ARCH_UNMAPPED_AREA
-
-/*
- * remap a physical address `phys' of size `size' with page protection `prot'
- * into virtual address `from'
- */
-
-#endif /* !__ASSEMBLY__ */
-
-#endif /* _ASMNDS32_PGTABLE_H */

arch/nds32/include/asm/pmu.h

-/* SPDX-License-Identifier: GPL-2.0 */
-/* Copyright (C) 2008-2018 Andes Technology Corporation */
-
-#ifndef __ASM_PMU_H
-#define __ASM_PMU_H
-
-#include <linux/interrupt.h>
-#include <linux/perf_event.h>
-#include <asm/unistd.h>
-#include <asm/bitfield.h>
-
-/* Has special meaning for perf core implementation */
-#define HW_OP_UNSUPPORTED		0x0
-#define C(_x)				PERF_COUNT_HW_CACHE_##_x
-#define CACHE_OP_UNSUPPORTED		0x0
-
-/* Enough for both software and hardware defined events */
-#define SOFTWARE_EVENT_MASK		0xFF
-
-#define PFM_OFFSET_MAGIC_0		2	/* DO NOT START FROM 0 */
-#define PFM_OFFSET_MAGIC_1		(PFM_OFFSET_MAGIC_0 + 36)
-#define PFM_OFFSET_MAGIC_2		(PFM_OFFSET_MAGIC_1 + 36)
-
-enum { PFMC0, PFMC1, PFMC2, MAX_COUNTERS };
-
-u32 PFM_CTL_OVF[3] = { PFM_CTL_mskOVF0, PFM_CTL_mskOVF1,
-		       PFM_CTL_mskOVF2 };
-u32 PFM_CTL_EN[3] = { PFM_CTL_mskEN0, PFM_CTL_mskEN1,
-		      PFM_CTL_mskEN2 };
-u32 PFM_CTL_OFFSEL[3] = { PFM_CTL_offSEL0, PFM_CTL_offSEL1,
-			  PFM_CTL_offSEL2 };
-u32 PFM_CTL_IE[3] = { PFM_CTL_mskIE0, PFM_CTL_mskIE1, PFM_CTL_mskIE2 };
-u32 PFM_CTL_KS[3] = { PFM_CTL_mskKS0, PFM_CTL_mskKS1, PFM_CTL_mskKS2 };
-u32 PFM_CTL_KU[3] = { PFM_CTL_mskKU0, PFM_CTL_mskKU1, PFM_CTL_mskKU2 };
-u32 PFM_CTL_SEL[3] = { PFM_CTL_mskSEL0, PFM_CTL_mskSEL1, PFM_CTL_mskSEL2 };
-/*
- * Perf Events' indices
- */
-#define NDS32_IDX_CYCLE_COUNTER			0
-#define NDS32_IDX_COUNTER0			1
-#define NDS32_IDX_COUNTER1			2
-
-/* The events for a given PMU register set. */
-struct pmu_hw_events {
-	/*
-	 * The events that are active on the PMU for the given index.
-	 */
-	struct perf_event *events[MAX_COUNTERS];
-
-	/*
-	 * A 1 bit for an index indicates that the counter is being used for
-	 * an event. A 0 means that the counter can be used.
-	 */
-	unsigned long used_mask[BITS_TO_LONGS(MAX_COUNTERS)];
-
-	/*
-	 * Hardware lock to serialize accesses to PMU registers. Needed for the
-	 * read/modify/write sequences.
-	 */
-	raw_spinlock_t pmu_lock;
-};
-
-struct nds32_pmu {
-	struct pmu pmu;
-	cpumask_t active_irqs;
-	char *name;
-	 irqreturn_t (*handle_irq)(int irq_num, void *dev);
-	void (*enable)(struct perf_event *event);
-	void (*disable)(struct perf_event *event);
-	int (*get_event_idx)(struct pmu_hw_events *hw_events,
-			     struct perf_event *event);
-	int (*set_event_filter)(struct hw_perf_event *evt,
-				struct perf_event_attr *attr);
-	u32 (*read_counter)(struct perf_event *event);
-	void (*write_counter)(struct perf_event *event, u32 val);
-	void (*start)(struct nds32_pmu *nds32_pmu);
-	void (*stop)(struct nds32_pmu *nds32_pmu);
-	void (*reset)(void *data);
-	int (*request_irq)(struct nds32_pmu *nds32_pmu, irq_handler_t handler);
-	void (*free_irq)(struct nds32_pmu *nds32_pmu);
-	int (*map_event)(struct perf_event *event);
-	int num_events;
-	atomic_t active_events;
-	u64 max_period;
-	struct platform_device *plat_device;
-	struct pmu_hw_events *(*get_hw_events)(void);
-};
-
-#define to_nds32_pmu(p)			(container_of(p, struct nds32_pmu, pmu))
-
-int nds32_pmu_register(struct nds32_pmu *nds32_pmu, int type);
-
-u64 nds32_pmu_event_update(struct perf_event *event);
-
-int nds32_pmu_event_set_period(struct perf_event *event);
-
-/*
- * Common NDS32 SPAv3 event types
- *
- * Note: An implementation may not be able to count all of these events
- * but the encodings are considered to be `reserved' in the case that
- * they are not available.
- *
- * SEL_TOTAL_CYCLES will add an offset is due to ZERO is defined as
- * NOT_SUPPORTED EVENT mapping in generic perf code.
- * You will need to deal it in the event writing implementation.
- */
-enum spav3_counter_0_perf_types {
-	SPAV3_0_SEL_BASE = -1 + PFM_OFFSET_MAGIC_0,	/* counting symbol */
-	SPAV3_0_SEL_TOTAL_CYCLES = 0 + PFM_OFFSET_MAGIC_0,
-	SPAV3_0_SEL_COMPLETED_INSTRUCTION = 1 + PFM_OFFSET_MAGIC_0,
-	SPAV3_0_SEL_LAST	/* counting symbol */
-};
-
-enum spav3_counter_1_perf_types {
-	SPAV3_1_SEL_BASE = -1 + PFM_OFFSET_MAGIC_1,	/* counting symbol */
-	SPAV3_1_SEL_TOTAL_CYCLES = 0 + PFM_OFFSET_MAGIC_1,
-	SPAV3_1_SEL_COMPLETED_INSTRUCTION = 1 + PFM_OFFSET_MAGIC_1,
-	SPAV3_1_SEL_CONDITIONAL_BRANCH = 2 + PFM_OFFSET_MAGIC_1,
-	SPAV3_1_SEL_TAKEN_CONDITIONAL_BRANCH = 3 + PFM_OFFSET_MAGIC_1,
-	SPAV3_1_SEL_PREFETCH_INSTRUCTION = 4 + PFM_OFFSET_MAGIC_1,
-	SPAV3_1_SEL_RET_INST = 5 + PFM_OFFSET_MAGIC_1,
-	SPAV3_1_SEL_JR_INST = 6 + PFM_OFFSET_MAGIC_1,
-	SPAV3_1_SEL_JAL_JRAL_INST = 7 + PFM_OFFSET_MAGIC_1,
-	SPAV3_1_SEL_NOP_INST = 8 + PFM_OFFSET_MAGIC_1,
-	SPAV3_1_SEL_SCW_INST = 9 + PFM_OFFSET_MAGIC_1,
-	SPAV3_1_SEL_ISB_DSB_INST = 10 + PFM_OFFSET_MAGIC_1,
-	SPAV3_1_SEL_CCTL_INST = 11 + PFM_OFFSET_MAGIC_1,
-	SPAV3_1_SEL_TAKEN_INTERRUPTS = 12 + PFM_OFFSET_MAGIC_1,
-	SPAV3_1_SEL_LOADS_COMPLETED = 13 + PFM_OFFSET_MAGIC_1,
-	SPAV3_1_SEL_UITLB_ACCESS = 14 + PFM_OFFSET_MAGIC_1,
-	SPAV3_1_SEL_UDTLB_ACCESS = 15 + PFM_OFFSET_MAGIC_1,
-	SPAV3_1_SEL_MTLB_ACCESS = 16 + PFM_OFFSET_MAGIC_1,
-	SPAV3_1_SEL_CODE_CACHE_ACCESS = 17 + PFM_OFFSET_MAGIC_1,
-	SPAV3_1_SEL_DATA_DEPENDENCY_STALL_CYCLES = 18 + PFM_OFFSET_MAGIC_1,
-	SPAV3_1_SEL_DATA_CACHE_MISS_STALL_CYCLES = 19 + PFM_OFFSET_MAGIC_1,
-	SPAV3_1_SEL_DATA_CACHE_ACCESS = 20 + PFM_OFFSET_MAGIC_1,
-	SPAV3_1_SEL_DATA_CACHE_MISS = 21 + PFM_OFFSET_MAGIC_1,
-	SPAV3_1_SEL_LOAD_DATA_CACHE_ACCESS = 22 + PFM_OFFSET_MAGIC_1,
-	SPAV3_1_SEL_STORE_DATA_CACHE_ACCESS = 23 + PFM_OFFSET_MAGIC_1,
-	SPAV3_1_SEL_ILM_ACCESS = 24 + PFM_OFFSET_MAGIC_1,
-	SPAV3_1_SEL_LSU_BIU_CYCLES = 25 + PFM_OFFSET_MAGIC_1,
-	SPAV3_1_SEL_HPTWK_BIU_CYCLES = 26 + PFM_OFFSET_MAGIC_1,
-	SPAV3_1_SEL_DMA_BIU_CYCLES = 27 + PFM_OFFSET_MAGIC_1,
-	SPAV3_1_SEL_CODE_CACHE_FILL_BIU_CYCLES = 28 + PFM_OFFSET_MAGIC_1,
-	SPAV3_1_SEL_LEGAL_UNALIGN_DCACHE_ACCESS = 29 + PFM_OFFSET_MAGIC_1,
-	SPAV3_1_SEL_PUSH25 = 30 + PFM_OFFSET_MAGIC_1,
-	SPAV3_1_SEL_SYSCALLS_INST = 31 + PFM_OFFSET_MAGIC_1,
-	SPAV3_1_SEL_LAST	/* counting symbol */
-};
-
-enum spav3_counter_2_perf_types {
-	SPAV3_2_SEL_BASE = -1 + PFM_OFFSET_MAGIC_2,	/* counting symbol */
-	SPAV3_2_SEL_TOTAL_CYCLES = 0 + PFM_OFFSET_MAGIC_2,
-	SPAV3_2_SEL_COMPLETED_INSTRUCTION = 1 + PFM_OFFSET_MAGIC_2,
-	SPAV3_2_SEL_CONDITIONAL_BRANCH_MISPREDICT = 2 + PFM_OFFSET_MAGIC_2,
-	SPAV3_2_SEL_TAKEN_CONDITIONAL_BRANCH_MISPREDICT =
-	    3 + PFM_OFFSET_MAGIC_2,
-	SPAV3_2_SEL_PREFETCH_INSTRUCTION_CACHE_HIT = 4 + PFM_OFFSET_MAGIC_2,
-	SPAV3_1_SEL_RET_MISPREDICT = 5 + PFM_OFFSET_MAGIC_2,
-	SPAV3_1_SEL_IMMEDIATE_J_INST = 6 + PFM_OFFSET_MAGIC_2,
-	SPAV3_1_SEL_MULTIPLY_INST = 7 + PFM_OFFSET_MAGIC_2,
-	SPAV3_1_SEL_16_BIT_INST = 8 + PFM_OFFSET_MAGIC_2,
-	SPAV3_1_SEL_FAILED_SCW_INST = 9 + PFM_OFFSET_MAGIC_2,
-	SPAV3_1_SEL_LD_AFTER_ST_CONFLICT_REPLAYS = 10 + PFM_OFFSET_MAGIC_2,
-	SPAV3_1_SEL_TAKEN_EXCEPTIONS = 12 + PFM_OFFSET_MAGIC_2,
-	SPAV3_1_SEL_STORES_COMPLETED = 13 + PFM_OFFSET_MAGIC_2,
-	SPAV3_2_SEL_UITLB_MISS = 14 + PFM_OFFSET_MAGIC_2,
-	SPAV3_2_SEL_UDTLB_MISS = 15 + PFM_OFFSET_MAGIC_2,
-	SPAV3_2_SEL_MTLB_MISS = 16 + PFM_OFFSET_MAGIC_2,
-	SPAV3_2_SEL_CODE_CACHE_MISS = 17 + PFM_OFFSET_MAGIC_2,
-	SPAV3_1_SEL_EMPTY_INST_QUEUE_STALL_CYCLES = 18 + PFM_OFFSET_MAGIC_2,
-	SPAV3_1_SEL_DATA_WRITE_BACK = 19 + PFM_OFFSET_MAGIC_2,
-	SPAV3_2_SEL_DATA_CACHE_MISS = 21 + PFM_OFFSET_MAGIC_2,
-	SPAV3_2_SEL_LOAD_DATA_CACHE_MISS = 22 + PFM_OFFSET_MAGIC_2,
-	SPAV3_2_SEL_STORE_DATA_CACHE_MISS = 23 + PFM_OFFSET_MAGIC_2,
-	SPAV3_1_SEL_DLM_ACCESS = 24 + PFM_OFFSET_MAGIC_2,
-	SPAV3_1_SEL_LSU_BIU_REQUEST = 25 + PFM_OFFSET_MAGIC_2,
-	SPAV3_1_SEL_HPTWK_BIU_REQUEST = 26 + PFM_OFFSET_MAGIC_2,
-	SPAV3_1_SEL_DMA_BIU_REQUEST = 27 + PFM_OFFSET_MAGIC_2,
-	SPAV3_1_SEL_CODE_CACHE_FILL_BIU_REQUEST = 28 + PFM_OFFSET_MAGIC_2,
-	SPAV3_1_SEL_EXTERNAL_EVENTS = 29 + PFM_OFFSET_MAGIC_2,
-	SPAV3_1_SEL_POP25 = 30 + PFM_OFFSET_MAGIC_2,
-	SPAV3_2_SEL_LAST	/* counting symbol */
-};
-
-/* Get converted event counter index */
-static inline int get_converted_event_idx(unsigned long event)
-{
-	int idx;
-
-	if ((event) > SPAV3_0_SEL_BASE && event < SPAV3_0_SEL_LAST) {
-		idx = 0;
-	} else if ((event) > SPAV3_1_SEL_BASE && event < SPAV3_1_SEL_LAST) {
-		idx = 1;
-	} else if ((event) > SPAV3_2_SEL_BASE && event < SPAV3_2_SEL_LAST) {
-		idx = 2;
-	} else {
-		pr_err("GET_CONVERTED_EVENT_IDX PFM counter range error\n");
-		return -EPERM;
-	}
-
-	return idx;
-}
-
-/* Get converted hardware event number */
-static inline u32 get_converted_evet_hw_num(u32 event)
-{
-	if (event > SPAV3_0_SEL_BASE && event < SPAV3_0_SEL_LAST)
-		event -= PFM_OFFSET_MAGIC_0;
-	else if (event > SPAV3_1_SEL_BASE && event < SPAV3_1_SEL_LAST)
-		event -= PFM_OFFSET_MAGIC_1;
-	else if (event > SPAV3_2_SEL_BASE && event < SPAV3_2_SEL_LAST)
-		event -= PFM_OFFSET_MAGIC_2;
-	else if (event != 0)
-		pr_err("GET_CONVERTED_EVENT_HW_NUM PFM counter range error\n");
-
-	return event;
-}
-
-/*
- * NDS32 HW events mapping
- *
- * The hardware events that we support. We do support cache operations but
- * we have harvard caches and no way to combine instruction and data
- * accesses/misses in hardware.
- */
-static const unsigned int nds32_pfm_perf_map[PERF_COUNT_HW_MAX] = {
-	[PERF_COUNT_HW_CPU_CYCLES] = SPAV3_0_SEL_TOTAL_CYCLES,
-	[PERF_COUNT_HW_INSTRUCTIONS] = SPAV3_1_SEL_COMPLETED_INSTRUCTION,
-	[PERF_COUNT_HW_CACHE_REFERENCES] = SPAV3_1_SEL_DATA_CACHE_ACCESS,
-	[PERF_COUNT_HW_CACHE_MISSES] = SPAV3_2_SEL_DATA_CACHE_MISS,
-	[PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = HW_OP_UNSUPPORTED,
-	[PERF_COUNT_HW_BRANCH_MISSES] = HW_OP_UNSUPPORTED,
-	[PERF_COUNT_HW_BUS_CYCLES] = HW_OP_UNSUPPORTED,
-	[PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] = HW_OP_UNSUPPORTED,
-	[PERF_COUNT_HW_STALLED_CYCLES_BACKEND] = HW_OP_UNSUPPORTED,
-	[PERF_COUNT_HW_REF_CPU_CYCLES] = HW_OP_UNSUPPORTED
-};
-
-static const unsigned int nds32_pfm_perf_cache_map[PERF_COUNT_HW_CACHE_MAX]
-	[PERF_COUNT_HW_CACHE_OP_MAX]
-	[PERF_COUNT_HW_CACHE_RESULT_MAX] = {
-	[C(L1D)] = {
-		    [C(OP_READ)] = {
-				    [C(RESULT_ACCESS)] =
-				    SPAV3_1_SEL_LOAD_DATA_CACHE_ACCESS,
-				    [C(RESULT_MISS)] =
-				    SPAV3_2_SEL_LOAD_DATA_CACHE_MISS,
-				    },
-		    [C(OP_WRITE)] = {
-				     [C(RESULT_ACCESS)] =
-				     SPAV3_1_SEL_STORE_DATA_CACHE_ACCESS,
-				     [C(RESULT_MISS)] =
-				     SPAV3_2_SEL_STORE_DATA_CACHE_MISS,
-				     },
-		    [C(OP_PREFETCH)] = {
-					[C(RESULT_ACCESS)] =
-						CACHE_OP_UNSUPPORTED,
-					[C(RESULT_MISS)] =
-						CACHE_OP_UNSUPPORTED,
-					},
-		    },
-	[C(L1I)] = {
-		    [C(OP_READ)] = {
-				    [C(RESULT_ACCESS)] =
-				    SPAV3_1_SEL_CODE_CACHE_ACCESS,
-				    [C(RESULT_MISS)] =
-				    SPAV3_2_SEL_CODE_CACHE_MISS,
-				    },
-		    [C(OP_WRITE)] = {
-				     [C(RESULT_ACCESS)] =
-				     SPAV3_1_SEL_CODE_CACHE_ACCESS,
-				     [C(RESULT_MISS)] =
-				     SPAV3_2_SEL_CODE_CACHE_MISS,
-				     },
-		    [C(OP_PREFETCH)] = {
-					[C(RESULT_ACCESS)] =
-					CACHE_OP_UNSUPPORTED,
-					[C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
-					},
-		    },
-	/* TODO: L2CC */
-	[C(LL)] = {
-		   [C(OP_READ)] = {
-				   [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
-				   [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
-				   },
-		   [C(OP_WRITE)] = {
-				    [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
-				    [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
-				    },
-		   [C(OP_PREFETCH)] = {
-				       [C(RESULT_ACCESS)] =
-				       CACHE_OP_UNSUPPORTED,
-				       [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
-				       },
-		   },
-	/* NDS32 PMU does not support TLB read/write hit/miss,
-	 * However, it can count access/miss, which mixed with read and write.
-	 * Therefore, only READ counter will use it.
-	 * We do as possible as we can.
-	 */
-	[C(DTLB)] = {
-		     [C(OP_READ)] = {
-				     [C(RESULT_ACCESS)] =
-					SPAV3_1_SEL_UDTLB_ACCESS,
-				     [C(RESULT_MISS)] =
-					SPAV3_2_SEL_UDTLB_MISS,
-				     },
-		     [C(OP_WRITE)] = {
-				      [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
-				      [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
-				      },
-		     [C(OP_PREFETCH)] = {
-					 [C(RESULT_ACCESS)] =
-					 CACHE_OP_UNSUPPORTED,
-					 [C(RESULT_MISS)] =
-					 CACHE_OP_UNSUPPORTED,
-					 },
-		     },
-	[C(ITLB)] = {
-		     [C(OP_READ)] = {
-				     [C(RESULT_ACCESS)] =
-					SPAV3_1_SEL_UITLB_ACCESS,
-				     [C(RESULT_MISS)] =
-					SPAV3_2_SEL_UITLB_MISS,
-				     },
-		     [C(OP_WRITE)] = {
-				      [C(RESULT_ACCESS)] =
-					CACHE_OP_UNSUPPORTED,
-				      [C(RESULT_MISS)] =
-					CACHE_OP_UNSUPPORTED,
-				      },
-		     [C(OP_PREFETCH)] = {
-					 [C(RESULT_ACCESS)] =
-						CACHE_OP_UNSUPPORTED,
-					 [C(RESULT_MISS)] =
-						CACHE_OP_UNSUPPORTED,
-					 },
-		     },
-	[C(BPU)] = {		/* What is BPU? */
-		    [C(OP_READ)] = {
-				    [C(RESULT_ACCESS)] =
-					CACHE_OP_UNSUPPORTED,
-				    [C(RESULT_MISS)] =
-					CACHE_OP_UNSUPPORTED,
-				    },
-		    [C(OP_WRITE)] = {
-				     [C(RESULT_ACCESS)] =
-					CACHE_OP_UNSUPPORTED,
-				     [C(RESULT_MISS)] =
-					CACHE_OP_UNSUPPORTED,
-				     },
-		    [C(OP_PREFETCH)] = {
-					[C(RESULT_ACCESS)] =
-						CACHE_OP_UNSUPPORTED,
-					[C(RESULT_MISS)] =
-						CACHE_OP_UNSUPPORTED,
-					},
-		    },
-	[C(NODE)] = {		/* What is NODE? */
-		     [C(OP_READ)] = {
-				     [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
-				     [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
-				     },
-		     [C(OP_WRITE)] = {
-				      [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
-				      [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
-				      },
-		     [C(OP_PREFETCH)] = {
-					 [C(RESULT_ACCESS)] =
-						CACHE_OP_UNSUPPORTED,
-					 [C(RESULT_MISS)] =
-						CACHE_OP_UNSUPPORTED,
-					 },
-		     },
-};
-
-int nds32_pmu_map_event(struct perf_event *event,
-			const unsigned int (*event_map)[PERF_COUNT_HW_MAX],
-			const unsigned int (*cache_map)[PERF_COUNT_HW_CACHE_MAX]
-			[PERF_COUNT_HW_CACHE_OP_MAX]
-			[PERF_COUNT_HW_CACHE_RESULT_MAX], u32 raw_event_mask);
-
-#endif /* __ASM_PMU_H */

arch/nds32/include/asm/proc-fns.h

-/* SPDX-License-Identifier: GPL-2.0 */
-// Copyright (C) 2005-2017 Andes Technology Corporation
-
-#ifndef __NDS32_PROCFNS_H__
-#define __NDS32_PROCFNS_H__
-
-#ifdef __KERNEL__
-#include <asm/page.h>
-
-struct mm_struct;
-struct vm_area_struct;
-extern void cpu_proc_init(void);
-extern void cpu_proc_fin(void);
-extern void cpu_do_idle(void);
-extern void cpu_reset(unsigned long reset);
-extern void cpu_switch_mm(struct mm_struct *mm);
-
-extern void cpu_dcache_inval_all(void);
-extern void cpu_dcache_wbinval_all(void);
-extern void cpu_dcache_inval_page(unsigned long page);
-extern void cpu_dcache_wb_page(unsigned long page);
-extern void cpu_dcache_wbinval_page(unsigned long page);
-extern void cpu_dcache_inval_range(unsigned long start, unsigned long end);
-extern void cpu_dcache_wb_range(unsigned long start, unsigned long end);
-extern void cpu_dcache_wbinval_range(unsigned long start, unsigned long end);
-
-extern void cpu_icache_inval_all(void);
-extern void cpu_icache_inval_page(unsigned long page);
-extern void cpu_icache_inval_range(unsigned long start, unsigned long end);
-
-extern void cpu_cache_wbinval_page(unsigned long page, int flushi);
-extern void cpu_cache_wbinval_range(unsigned long start,
-				    unsigned long end, int flushi);
-extern void cpu_cache_wbinval_range_check(struct vm_area_struct *vma,
-					  unsigned long start,
-					  unsigned long end, bool flushi,
-					  bool wbd);
-
-extern void cpu_dma_wb_range(unsigned long start, unsigned long end);
-extern void cpu_dma_inval_range(unsigned long start, unsigned long end);
-extern void cpu_dma_wbinval_range(unsigned long start, unsigned long end);
-
-#endif /* __KERNEL__ */
-#endif /* __NDS32_PROCFNS_H__ */

arch/nds32/include/asm/processor.h

-/* SPDX-License-Identifier: GPL-2.0 */
-// Copyright (C) 2005-2017 Andes Technology Corporation
-
-#ifndef __ASM_NDS32_PROCESSOR_H
-#define __ASM_NDS32_PROCESSOR_H
-
-#ifdef __KERNEL__
-
-#include <asm/ptrace.h>
-#include <asm/types.h>
-#include <asm/sigcontext.h>
-
-#define KERNEL_STACK_SIZE	PAGE_SIZE
-#define STACK_TOP	TASK_SIZE
-#define STACK_TOP_MAX   TASK_SIZE
-
-struct cpu_context {
-	unsigned long r6;
-	unsigned long r7;
-	unsigned long r8;
-	unsigned long r9;
-	unsigned long r10;
-	unsigned long r11;
-	unsigned long r12;
-	unsigned long r13;
-	unsigned long r14;
-	unsigned long fp;
-	unsigned long pc;
-	unsigned long sp;
-};
-
-struct thread_struct {
-	struct cpu_context cpu_context;	/* cpu context */
-	/* fault info     */
-	unsigned long address;
-	unsigned long trap_no;
-	unsigned long error_code;
-
-	struct fpu_struct fpu;
-};
-
-#define INIT_THREAD  {	}
-
-#ifdef __NDS32_EB__
-#define PSW_DE	PSW_mskBE
-#else
-#define PSW_DE	0x0
-#endif
-
-#ifdef CONFIG_WBNA
-#define PSW_valWBNA	PSW_mskWBNA
-#else
-#define PSW_valWBNA	0x0
-#endif
-
-#ifdef CONFIG_HWZOL
-#define	PSW_valINIT (PSW_CPL_ANY | PSW_mskAEN | PSW_valWBNA | PSW_mskDT | PSW_mskIT | PSW_DE | PSW_mskGIE)
-#else
-#define	PSW_valINIT (PSW_CPL_ANY | PSW_valWBNA | PSW_mskDT | PSW_mskIT | PSW_DE | PSW_mskGIE)
-#endif
-
-#define start_thread(regs,pc,stack)			\
-({							\
-	memzero(regs, sizeof(struct pt_regs));		\
-	forget_syscall(regs);				\
-	regs->ipsw = PSW_valINIT;			\
-	regs->ir0 = (PSW_CPL_ANY | PSW_valWBNA | PSW_mskDT | PSW_mskIT | PSW_DE | PSW_SYSTEM | PSW_INTL_1);	\
-	regs->ipc = pc;					\
-	regs->sp = stack;				\
-})
-
-/* Forward declaration, a strange C thing */
-struct task_struct;
-
-/* Free all resources held by a thread. */
-#define release_thread(thread) do { } while(0)
-#if IS_ENABLED(CONFIG_FPU)
-#if !IS_ENABLED(CONFIG_UNLAZU_FPU)
-extern struct task_struct *last_task_used_math;
-#endif
-#endif
-
-/* Prepare to copy thread state - unlazy all lazy status */
-#define prepare_to_copy(tsk)	do { } while (0)
-
-unsigned long __get_wchan(struct task_struct *p);
-
-#define cpu_relax()			barrier()
-
-#define task_pt_regs(task) \
-	((struct pt_regs *) (task_stack_page(task) + THREAD_SIZE \
-		- 8) - 1)
-
-/*
- * Create a new kernel thread
- */
-extern int kernel_thread(int (*fn) (void *), void *arg, unsigned long flags);
-
-#define KSTK_EIP(tsk)	instruction_pointer(task_pt_regs(tsk))
-#define KSTK_ESP(tsk)	user_stack_pointer(task_pt_regs(tsk))
-
-#endif
-
-#endif /* __ASM_NDS32_PROCESSOR_H */

arch/nds32/include/asm/ptrace.h

-/* SPDX-License-Identifier: GPL-2.0 */
-// Copyright (C) 2005-2017 Andes Technology Corporation
-
-#ifndef __ASM_NDS32_PTRACE_H
-#define __ASM_NDS32_PTRACE_H
-
-#include <uapi/asm/ptrace.h>
-
-/*
- * If pt_regs.syscallno == NO_SYSCALL, then the thread is not executing
- * a syscall -- i.e., its most recent entry into the kernel from
- * userspace was not via syscall, or otherwise a tracer cancelled the
- * syscall.
- *
- * This must have the value -1, for ABI compatibility with ptrace etc.
- */
-#define NO_SYSCALL (-1)
-#ifndef __ASSEMBLY__
-#include <linux/types.h>
-
-struct pt_regs {
-	union {
-		struct user_pt_regs user_regs;
-		struct {
-			long uregs[26];
-			long fp;
-			long gp;
-			long lp;
-			long sp;
-			long ipc;
-#if defined(CONFIG_HWZOL)
-			long lb;
-			long le;
-			long lc;
-#else
-			long dummy[3];
-#endif
-			long syscallno;
-		};
-	};
-	long orig_r0;
-	long ir0;
-	long ipsw;
-	long pipsw;
-	long pipc;
-	long pp0;
-	long pp1;
-	long fucop_ctl;
-	long osp;
-};
-
-static inline bool in_syscall(struct pt_regs const *regs)
-{
-	return regs->syscallno != NO_SYSCALL;
-}
-
-static inline void forget_syscall(struct pt_regs *regs)
-{
-	regs->syscallno = NO_SYSCALL;
-}
-static inline unsigned long regs_return_value(struct pt_regs *regs)
-{
-	return regs->uregs[0];
-}
-extern void show_regs(struct pt_regs *);
-/* Avoid circular header include via sched.h */
-struct task_struct;
-
-#define arch_has_single_step()		(1)
-#define user_mode(regs)			(((regs)->ipsw & PSW_mskPOM) == 0)
-#define interrupts_enabled(regs)	(!!((regs)->ipsw & PSW_mskGIE))
-#define user_stack_pointer(regs)	((regs)->sp)
-#define instruction_pointer(regs)	((regs)->ipc)
-#define profile_pc(regs) 		instruction_pointer(regs)
-
-#endif /* __ASSEMBLY__ */
-#endif

arch/nds32/include/asm/sfp-machine.h

-/* SPDX-License-Identifier: GPL-2.0 */
-/* Copyright (C) 2005-2018 Andes Technology Corporation */
-
-#include <asm/bitfield.h>
-
-#define _FP_W_TYPE_SIZE		32
-#define _FP_W_TYPE		unsigned long
-#define _FP_WS_TYPE		signed long
-#define _FP_I_TYPE		long
-
-#define __ll_B ((UWtype) 1 << (W_TYPE_SIZE / 2))
-#define __ll_lowpart(t) ((UWtype) (t) & (__ll_B - 1))
-#define __ll_highpart(t) ((UWtype) (t) >> (W_TYPE_SIZE / 2))
-
-#define _FP_MUL_MEAT_S(R, X, Y)				\
-	_FP_MUL_MEAT_1_wide(_FP_WFRACBITS_S, R, X, Y, umul_ppmm)
-#define _FP_MUL_MEAT_D(R, X, Y)				\
-	_FP_MUL_MEAT_2_wide(_FP_WFRACBITS_D, R, X, Y, umul_ppmm)
-#define _FP_MUL_MEAT_Q(R, X, Y)				\
-	_FP_MUL_MEAT_4_wide(_FP_WFRACBITS_Q, R, X, Y, umul_ppmm)
-
-#define _FP_MUL_MEAT_DW_S(R, X, Y)			\
-	_FP_MUL_MEAT_DW_1_wide(_FP_WFRACBITS_S, R, X, Y, umul_ppmm)
-#define _FP_MUL_MEAT_DW_D(R, X, Y)			\
-	_FP_MUL_MEAT_DW_2_wide(_FP_WFRACBITS_D, R, X, Y, umul_ppmm)
-
-#define _FP_DIV_MEAT_S(R, X, Y)	_FP_DIV_MEAT_1_udiv_norm(S, R, X, Y)
-#define _FP_DIV_MEAT_D(R, X, Y)	_FP_DIV_MEAT_2_udiv(D, R, X, Y)
-
-#define _FP_NANFRAC_S		((_FP_QNANBIT_S << 1) - 1)
-#define _FP_NANFRAC_D		((_FP_QNANBIT_D << 1) - 1), -1
-#define _FP_NANFRAC_Q		((_FP_QNANBIT_Q << 1) - 1), -1, -1, -1
-#define _FP_NANSIGN_S		0
-#define _FP_NANSIGN_D		0
-#define _FP_NANSIGN_Q		0
-
-#define _FP_KEEPNANFRACP 1
-#define _FP_QNANNEGATEDP 0
-
-#define _FP_CHOOSENAN(fs, wc, R, X, Y, OP)			\
-do {								\
-	if ((_FP_FRAC_HIGH_RAW_##fs(X) & _FP_QNANBIT_##fs)	\
-	  && !(_FP_FRAC_HIGH_RAW_##fs(Y) & _FP_QNANBIT_##fs)) { \
-		R##_s = Y##_s;					\
-		_FP_FRAC_COPY_##wc(R, Y);			\
-	} else {						\
-		R##_s = X##_s;					\
-		_FP_FRAC_COPY_##wc(R, X);			\
-	}							\
-	R##_c = FP_CLS_NAN;					\
-} while (0)
-
-#define __FPU_FPCSR	(current->thread.fpu.fpcsr)
-
-/* Obtain the current rounding mode. */
-#define FP_ROUNDMODE                    \
-({                                      \
-	__FPU_FPCSR & FPCSR_mskRM;      \
-})
-
-#define FP_RND_NEAREST		0
-#define FP_RND_PINF		1
-#define FP_RND_MINF		2
-#define FP_RND_ZERO		3
-
-#define FP_EX_INVALID		FPCSR_mskIVO
-#define FP_EX_DIVZERO		FPCSR_mskDBZ
-#define FP_EX_OVERFLOW		FPCSR_mskOVF
-#define FP_EX_UNDERFLOW		FPCSR_mskUDF
-#define FP_EX_INEXACT		FPCSR_mskIEX
-
-#define SF_CEQ	2
-#define SF_CLT	1
-#define SF_CGT	3
-#define SF_CUN	4
-
-#include <asm/byteorder.h>
-
-#ifdef __BIG_ENDIAN__
-#define __BYTE_ORDER __BIG_ENDIAN
-#define __LITTLE_ENDIAN 0
-#else
-#define __BYTE_ORDER __LITTLE_ENDIAN
-#define __BIG_ENDIAN 0
-#endif
-
-#define abort() do { } while (0)
-#define umul_ppmm(w1, w0, u, v)						\
-do {									\
-	UWtype __x0, __x1, __x2, __x3;                                  \
-	UHWtype __ul, __vl, __uh, __vh;                                 \
-									\
-	__ul = __ll_lowpart(u);						\
-	__uh = __ll_highpart(u);					\
-	__vl = __ll_lowpart(v);						\
-	__vh = __ll_highpart(v);					\
-									\
-	__x0 = (UWtype) __ul * __vl;                                    \
-	__x1 = (UWtype) __ul * __vh;                                    \
-	__x2 = (UWtype) __uh * __vl;                                    \
-	__x3 = (UWtype) __uh * __vh;                                    \
-									\
-	__x1 += __ll_highpart(__x0);					\
-	__x1 += __x2;							\
-	if (__x1 < __x2)						\
-		__x3 += __ll_B;						\
-									\
-	(w1) = __x3 + __ll_highpart(__x1);				\
-	(w0) = __ll_lowpart(__x1) * __ll_B + __ll_lowpart(__x0);	\
-} while (0)
-
-#define add_ssaaaa(sh, sl, ah, al, bh, bl) \
-do { \
-	UWtype __x; \
-	__x = (al) + (bl); \
-	(sh) = (ah) + (bh) + (__x < (al)); \
-	(sl) = __x; \
-} while (0)
-
-#define sub_ddmmss(sh, sl, ah, al, bh, bl) \
-do { \
-	UWtype __x; \
-	__x = (al) - (bl); \
-	(sh) = (ah) - (bh) - (__x > (al)); \
-	(sl) = __x; \
-} while (0)
-
-#define udiv_qrnnd(q, r, n1, n0, d)				\
-do {								\
-	UWtype __d1, __d0, __q1, __q0, __r1, __r0, __m;		\
-	__d1 = __ll_highpart(d);				\
-	__d0 = __ll_lowpart(d);					\
-								\
-	__r1 = (n1) % __d1;					\
-	__q1 = (n1) / __d1;					\
-	__m = (UWtype) __q1 * __d0;				\
-	__r1 = __r1 * __ll_B | __ll_highpart(n0);		\
-	if (__r1 < __m)	{					\
-		__q1--, __r1 += (d);				\
-		if (__r1 >= (d))				\
-			if (__r1 < __m)				\
-				__q1--, __r1 += (d);		\
-	}							\
-	__r1 -= __m;						\
-	__r0 = __r1 % __d1;					\
-	__q0 = __r1 / __d1;					\
-	__m = (UWtype) __q0 * __d0;				\
-	__r0 = __r0 * __ll_B | __ll_lowpart(n0);		\
-	if (__r0 < __m)	{					\
-		__q0--, __r0 += (d);				\
-		if (__r0 >= (d))				\
-			if (__r0 < __m)				\
-				__q0--, __r0 += (d);		\
-	}							\
-	__r0 -= __m;						\
-	(q) = (UWtype) __q1 * __ll_B | __q0;			\
-	(r) = __r0;						\
-} while (0)

arch/nds32/include/asm/shmparam.h

-/* SPDX-License-Identifier: GPL-2.0 */
-// Copyright (C) 2005-2017 Andes Technology Corporation
-
-#ifndef _ASMNDS32_SHMPARAM_H
-#define _ASMNDS32_SHMPARAM_H
-
-/*
- * This should be the size of the virtually indexed cache/ways,
- * whichever is greater since the cache aliases every size/ways
- * bytes.
- */
-#define	SHMLBA	(4 * SZ_8K)	/* attach addr a multiple of this */
-
-/*
- * Enforce SHMLBA in shmat
- */
-#define __ARCH_FORCE_SHMLBA
-
-#endif /* _ASMNDS32_SHMPARAM_H */

arch/nds32/include/asm/stacktrace.h

-/* SPDX-License-Identifier: GPL-2.0 */
-/* Copyright (C) 2008-2018 Andes Technology Corporation */
-
-#ifndef __ASM_STACKTRACE_H
-#define __ASM_STACKTRACE_H
-
-/* Kernel callchain */
-struct stackframe {
-	unsigned long fp;
-	unsigned long sp;
-	unsigned long lp;
-};
-
-/*
- * struct frame_tail: User callchain
- * IMPORTANT:
- * This struct is used for call-stack walking,
- * the order and types matters.
- * Do not use array, it only stores sizeof(pointer)
- *
- * The details can refer to arch/arm/kernel/perf_event.c
- */
-struct frame_tail {
-	unsigned long stack_fp;
-	unsigned long stack_lp;
-};
-
-/* For User callchain with optimize for size */
-struct frame_tail_opt_size {
-	unsigned long stack_r6;
-	unsigned long stack_fp;
-	unsigned long stack_gp;
-	unsigned long stack_lp;
-};
-
-extern void
-get_real_ret_addr(unsigned long *addr, struct task_struct *tsk, int *graph);
-
-#endif /* __ASM_STACKTRACE_H */

arch/nds32/include/asm/string.h

-/* SPDX-License-Identifier: GPL-2.0 */
-// Copyright (C) 2005-2017 Andes Technology Corporation
-
-#ifndef __ASM_NDS32_STRING_H
-#define __ASM_NDS32_STRING_H
-
-#define __HAVE_ARCH_MEMCPY
-extern void *memcpy(void *, const void *, __kernel_size_t);
-
-#define __HAVE_ARCH_MEMMOVE
-extern void *memmove(void *, const void *, __kernel_size_t);
-
-#define __HAVE_ARCH_MEMSET
-extern void *memset(void *, int, __kernel_size_t);
-
-extern void *memzero(void *ptr, __kernel_size_t n);
-#endif

arch/nds32/include/asm/suspend.h

-/* SPDX-License-Identifier: GPL-2.0 */
-// Copyright (C) 2008-2017 Andes Technology Corporation
-
-#ifndef __ASM_NDS32_SUSPEND_H
-#define __ASM_NDS32_SUSPEND_H
-
-extern void suspend2ram(void);
-extern void cpu_resume(void);
-extern unsigned long wake_mask;
-
-#endif

arch/nds32/include/asm/swab.h

-/* SPDX-License-Identifier: GPL-2.0 */
-// Copyright (C) 2005-2017 Andes Technology Corporation
-
-#ifndef __NDS32_SWAB_H__
-#define __NDS32_SWAB_H__
-
-#include <linux/types.h>
-#include <linux/compiler.h>
-
-static __inline__ __attribute_const__ __u32 ___arch__swab32(__u32 x)
-{
-	__asm__("wsbh   %0, %0\n\t"	/* word swap byte within halfword */
-		"rotri  %0, %0, #16\n"
-		:"=r"(x)
-		:"0"(x));
-	return x;
-}
-
-static __inline__ __attribute_const__ __u16 ___arch__swab16(__u16 x)
-{
-	__asm__("wsbh   %0, %0\n"	/* word swap byte within halfword */
-		:"=r"(x)
-		:"0"(x));
-	return x;
-}
-
-#define __arch_swab32(x) ___arch__swab32(x)
-#define __arch_swab16(x) ___arch__swab16(x)
-
-#if !defined(__STRICT_ANSI__) || defined(__KERNEL__)
-#define __BYTEORDER_HAS_U64__
-#define __SWAB_64_THRU_32__
-#endif
-
-#endif /* __NDS32_SWAB_H__ */

arch/nds32/include/asm/syscalls.h

-/* SPDX-License-Identifier: GPL-2.0 */
-// Copyright (C) 2005-2017 Andes Technology Corporation
-
-#ifndef __ASM_NDS32_SYSCALLS_H
-#define __ASM_NDS32_SYSCALLS_H
-
-asmlinkage long sys_cacheflush(unsigned long addr, unsigned long len, unsigned int op);
-asmlinkage long sys_fadvise64_64_wrapper(int fd, int advice, loff_t offset, loff_t len);
-asmlinkage long sys_rt_sigreturn_wrapper(void);
-asmlinkage long sys_fp_udfiex_crtl(int cmd, int act);
-
-#include <asm-generic/syscalls.h>
-
-#endif /* __ASM_NDS32_SYSCALLS_H */