提交 5633004c 编写于 作者: J James Hogan

metag: Build infrastructure

Add metag build infrastructure.
Signed-off-by: NJames Hogan <james.hogan@imgtec.com>
上级 79f83c02
config SYMBOL_PREFIX
string
default "_"
config METAG
def_bool y
select EMBEDDED
select GENERIC_ATOMIC64
select GENERIC_CLOCKEVENTS
select GENERIC_IRQ_SHOW
select GENERIC_SIGALTSTACK
select GENERIC_SMP_IDLE_THREAD
select HAVE_64BIT_ALIGNED_ACCESS
select HAVE_ARCH_TRACEHOOK
select HAVE_DEBUG_KMEMLEAK
select HAVE_GENERIC_HARDIRQS
select HAVE_IRQ_WORK
select HAVE_KERNEL_BZIP2
select HAVE_KERNEL_GZIP
select HAVE_KERNEL_LZO
select HAVE_KERNEL_XZ
select HAVE_MEMBLOCK
select HAVE_MEMBLOCK_NODE_MAP
select HAVE_MOD_ARCH_SPECIFIC
select HAVE_SYSCALL_TRACEPOINTS
select IRQ_DOMAIN
select MODULES_USE_ELF_RELA
select OF
select OF_EARLY_FLATTREE
select SPARSE_IRQ
config ARCH_NO_VIRT_TO_BUS
def_bool y
config STACKTRACE_SUPPORT
def_bool y
config LOCKDEP_SUPPORT
def_bool y
config HAVE_LATENCYTOP_SUPPORT
def_bool y
config RWSEM_GENERIC_SPINLOCK
def_bool y
config RWSEM_XCHGADD_ALGORITHM
bool
config GENERIC_HWEIGHT
def_bool y
config GENERIC_CALIBRATE_DELAY
def_bool y
config GENERIC_GPIO
def_bool n
config NO_IOPORT
def_bool y
source "init/Kconfig"
source "kernel/Kconfig.freezer"
menu "Processor type and features"
config MMU
def_bool y
config STACK_GROWSUP
def_bool y
config HOTPLUG_CPU
bool "Enable CPU hotplug support"
depends on SMP
help
Say Y here to allow turning CPUs off and on. CPUs can be
controlled through /sys/devices/system/cpu.
Say N if you want to disable CPU hotplug.
config HIGHMEM
bool "High Memory Support"
help
The address space of Meta 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.
source "arch/metag/mm/Kconfig"
source "arch/metag/Kconfig.soc"
config METAG_META12
bool
help
Select this from the SoC config symbol to indicate that it contains a
Meta 1.2 core.
config METAG_META21
bool
help
Select this from the SoC config symbol to indicate that it contains a
Meta 2.1 core.
config SMP
bool "Symmetric multi-processing support"
depends on METAG_META21 && METAG_META21_MMU
select USE_GENERIC_SMP_HELPERS
help
This enables support for systems with more than one thread running
Linux. If you have a system with only one thread running Linux,
say N. Otherwise, say Y.
config NR_CPUS
int "Maximum number of CPUs (2-4)" if SMP
range 2 4 if SMP
default "1" if !SMP
default "4" if SMP
config METAG_SMP_WRITE_REORDERING
bool
help
This attempts to prevent cache-memory incoherence due to external
reordering of writes from different hardware threads when SMP is
enabled. It adds fences (system event 0) to smp_mb and smp_rmb in an
attempt to catch some of the cases, and also before writes to shared
memory in LOCK1 protected atomics and spinlocks.
This will not completely prevent cache incoherency on affected cores.
config METAG_LNKGET_AROUND_CACHE
bool
depends on METAG_META21
help
This indicates that the LNKGET/LNKSET instructions go around the
cache, which requires some extra cache flushes when the memory needs
to be accessed by normal GET/SET instructions too.
choice
prompt "Atomicity primitive"
default METAG_ATOMICITY_LNKGET
help
This option selects the mechanism for performing atomic operations.
config METAG_ATOMICITY_IRQSOFF
depends on !SMP
bool "irqsoff"
help
This option disables interrupts to achieve atomicity. This mechanism
is not SMP-safe.
config METAG_ATOMICITY_LNKGET
depends on METAG_META21
bool "lnkget/lnkset"
help
This option uses the LNKGET and LNKSET instructions to achieve
atomicity. LNKGET/LNKSET are load-link/store-conditional instructions.
Choose this option if your system requires low latency.
config METAG_ATOMICITY_LOCK1
depends on SMP
bool "lock1"
help
This option uses the LOCK1 instruction for atomicity. This is mainly
provided as a debugging aid if the lnkget/lnkset atomicity primitive
isn't working properly.
endchoice
config METAG_FPU
bool "FPU Support"
depends on METAG_META21
default y
help
This option allows processes to use FPU hardware available with this
CPU. If this option is not enabled FPU registers will not be saved
and restored on context-switch.
If you plan on running programs which are compiled to use hard floats
say Y here.
config METAG_DSP
bool "DSP Support"
help
This option allows processes to use DSP hardware available
with this CPU. If this option is not enabled DSP registers
will not be saved and restored on context-switch.
If you plan on running DSP programs say Y here.
config METAG_PERFCOUNTER_IRQS
bool "PerfCounters interrupt support"
depends on METAG_META21
help
This option enables using interrupts to collect information from
Performance Counters. This option is supported in new META21
(starting from HTP265).
When disabled, Performance Counters information will be collected
based on Timer Interrupt.
menu "Boot options"
config METAG_BUILTIN_DTB
bool "Embed DTB in kernel image"
default y
help
Embeds a device tree binary in the kernel image.
config METAG_BUILTIN_DTB_NAME
string "Built in DTB"
depends on METAG_BUILTIN_DTB
help
Set the name of the DTB to embed (leave blank to pick one
automatically based on kernel configuration).
config CMDLINE_BOOL
bool "Default bootloader kernel arguments"
config CMDLINE
string "Kernel command line"
depends on CMDLINE_BOOL
help
On some architectures there is currently no way for the boot loader
to pass arguments to the kernel. For these architectures, you should
supply some command-line options at build time by entering them
here.
config CMDLINE_FORCE
bool "Force default kernel command string"
depends on CMDLINE_BOOL
help
Set this to have arguments from the default kernel command string
override those passed by the boot loader.
endmenu
source "kernel/Kconfig.preempt"
source kernel/Kconfig.hz
endmenu
menu "Power management options"
source kernel/power/Kconfig
endmenu
menu "Executable file formats"
source "fs/Kconfig.binfmt"
endmenu
source "net/Kconfig"
source "drivers/Kconfig"
source "fs/Kconfig"
source "arch/metag/Kconfig.debug"
source "security/Kconfig"
source "crypto/Kconfig"
source "lib/Kconfig"
menu "Kernel hacking"
config TRACE_IRQFLAGS_SUPPORT
bool
default y
source "lib/Kconfig.debug"
config DEBUG_STACKOVERFLOW
bool "Check for stack overflows"
depends on DEBUG_KERNEL
help
This option will cause messages to be printed if free stack space
drops below a certain limit.
config 4KSTACKS
bool "Use 4Kb for kernel stacks instead of 8Kb"
depends on DEBUG_KERNEL
help
If you say Y here the kernel will use a 4Kb stacksize for the
kernel stack attached to each process/thread. This facilitates
running more threads on a system and also reduces the pressure
on the VM subsystem for higher order allocations. This option
will also use IRQ stacks to compensate for the reduced stackspace.
config METAG_FUNCTION_TRACE
bool "Output Meta real-time trace data for function entry/exit"
help
If you say Y here the kernel will use the Meta hardware trace
unit to output information about function entry and exit that
can be used by a debugger for profiling and call-graphs.
config METAG_POISON_CATCH_BUFFERS
bool "Poison catch buffer contents on kernel entry"
help
If you say Y here the kernel will write poison data to the
catch buffer registers on kernel entry. This will make any
problem with catch buffer handling much more apparent.
endmenu
choice
prompt "SoC Type"
default META21_FPGA
config META12_FPGA
bool "Meta 1.2 FPGA"
select METAG_META12
help
This is a Meta 1.2 FPGA bitstream, just a bare CPU.
config META21_FPGA
bool "Meta 2.1 FPGA"
select METAG_META21
help
This is a Meta 2.1 FPGA bitstream, just a bare CPU.
endchoice
menu "SoC configuration"
if METAG_META21
# Meta 2.x specific options
config METAG_META21_MMU
bool "Meta 2.x MMU mode"
default y
help
Use the Meta 2.x MMU in extended mode.
config METAG_UNALIGNED
bool "Meta 2.x unaligned access checking"
default y
help
All memory accesses will be checked for alignment and an exception
raised on unaligned accesses. This feature does cost performance
but without it there will be no notification of this type of error.
config METAG_USER_TCM
bool "Meta on-chip memory support for userland"
select GENERIC_ALLOCATOR
default y
help
Allow the on-chip memories of Meta SoCs to be used by user
applications.
endif
config METAG_HALT_ON_PANIC
bool "Halt the core on panic"
help
Halt the core when a panic occurs. This is useful when running
pre-production silicon or in an FPGA environment.
endmenu
#
# metag/Makefile
#
# This file is included by the global makefile so that you can add your own
# architecture-specific flags and dependencies. Remember to do have actions
# for "archclean" cleaning up for this architecture.
#
# This file is subject to the terms and conditions of the GNU General Public
# License. See the file "COPYING" in the main directory of this archive
# for more details.
#
# Copyright (C) 1994 by Linus Torvalds
# 2007,2008,2012 by Imagination Technologies Ltd.
#
LDFLAGS :=
OBJCOPYFLAGS := -O binary -R .note -R .comment -S
checkflags-$(CONFIG_METAG_META12) += -DMETAC_1_2
checkflags-$(CONFIG_METAG_META21) += -DMETAC_2_1
CHECKFLAGS += -D__metag__ $(checkflags-y)
KBUILD_DEFCONFIG := meta2_defconfig
sflags-$(CONFIG_METAG_META12) += -mmetac=1.2
ifeq ($(CONFIG_METAG_META12),y)
# Only use TBI API 1.4 if DSP is enabled for META12 cores
sflags-$(CONFIG_METAG_DSP) += -DTBI_1_4
endif
sflags-$(CONFIG_METAG_META21) += -mmetac=2.1 -DTBI_1_4
cflags-$(CONFIG_METAG_FUNCTION_TRACE) += -mhwtrace-leaf -mhwtrace-retpc
cflags-$(CONFIG_METAG_META21) += -mextensions=bex
KBUILD_CFLAGS += -pipe
KBUILD_CFLAGS += -ffunction-sections
KBUILD_CFLAGS += $(sflags-y) $(cflags-y)
KBUILD_AFLAGS += $(sflags-y)
LDFLAGS_vmlinux := $(ldflags-y)
head-y := arch/metag/kernel/head.o
core-y += arch/metag/boot/dts/
core-y += arch/metag/kernel/
core-y += arch/metag/mm/
libs-y += arch/metag/lib/
libs-y += arch/metag/tbx/
boot := arch/metag/boot
boot_targets += uImage
boot_targets += uImage.gz
boot_targets += uImage.bz2
boot_targets += uImage.xz
boot_targets += uImage.lzo
boot_targets += uImage.bin
boot_targets += vmlinux.bin
PHONY += $(boot_targets)
all: vmlinux.bin
$(boot_targets): vmlinux
$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
%.dtb %.dtb.S %.dtb.o: scripts
$(Q)$(MAKE) $(build)=$(boot)/dts $(boot)/dts/$@
dtbs: scripts
$(Q)$(MAKE) $(build)=$(boot)/dts dtbs
archclean:
$(Q)$(MAKE) $(clean)=$(boot)
define archhelp
echo '* vmlinux.bin - Binary kernel image (arch/$(ARCH)/boot/vmlinux.bin)'
@echo ' uImage - Alias to bootable U-Boot image'
@echo ' uImage.bin - Kernel-only image for U-Boot (bin)'
@echo ' uImage.gz - Kernel-only image for U-Boot (gzip)'
@echo ' uImage.bz2 - Kernel-only image for U-Boot (bzip2)'
@echo ' uImage.xz - Kernel-only image for U-Boot (xz)'
@echo ' uImage.lzo - Kernel-only image for U-Boot (lzo)'
@echo ' dtbs - Build device tree blobs for enabled boards'
endef
#
# This file is subject to the terms and conditions of the GNU General Public
# License. See the file "COPYING" in the main directory of this archive
# for more details.
#
# Copyright (C) 2007,2012 Imagination Technologies Ltd.
#
suffix-y := bin
suffix-$(CONFIG_KERNEL_GZIP) := gz
suffix-$(CONFIG_KERNEL_BZIP2) := bz2
suffix-$(CONFIG_KERNEL_XZ) := xz
suffix-$(CONFIG_KERNEL_LZO) := lzo
targets += vmlinux.bin
targets += uImage
targets += uImage.gz
targets += uImage.bz2
targets += uImage.xz
targets += uImage.lzo
targets += uImage.bin
extra-y += vmlinux.bin
extra-y += vmlinux.bin.gz
extra-y += vmlinux.bin.bz2
extra-y += vmlinux.bin.xz
extra-y += vmlinux.bin.lzo
UIMAGE_LOADADDR = $(CONFIG_PAGE_OFFSET)
ifeq ($(CONFIG_FUNCTION_TRACER),y)
orig_cflags := $(KBUILD_CFLAGS)
KBUILD_CFLAGS = $(subst -pg, , $(orig_cflags))
endif
$(obj)/vmlinux.bin: vmlinux FORCE
$(call if_changed,objcopy)
$(obj)/vmlinux.bin.gz: $(obj)/vmlinux.bin FORCE
$(call if_changed,gzip)
$(obj)/vmlinux.bin.bz2: $(obj)/vmlinux.bin FORCE
$(call if_changed,bzip2)
$(obj)/vmlinux.bin.xz: $(obj)/vmlinux.bin FORCE
$(call if_changed,xzkern)
$(obj)/vmlinux.bin.lzo: $(obj)/vmlinux.bin FORCE
$(call if_changed,lzo)
$(obj)/uImage.gz: $(obj)/vmlinux.bin.gz FORCE
$(call if_changed,uimage,gzip)
$(obj)/uImage.bz2: $(obj)/vmlinux.bin.bz2 FORCE
$(call if_changed,uimage,bzip2)
$(obj)/uImage.xz: $(obj)/vmlinux.bin.xz FORCE
$(call if_changed,uimage,xz)
$(obj)/uImage.lzo: $(obj)/vmlinux.bin.lzo FORCE
$(call if_changed,uimage,lzo)
$(obj)/uImage.bin: $(obj)/vmlinux.bin FORCE
$(call if_changed,uimage,none)
$(obj)/uImage: $(obj)/uImage.$(suffix-y)
@ln -sf $(notdir $<) $@
@echo ' Image $@ is ready'
CONFIG_EXPERIMENTAL=y
# CONFIG_LOCALVERSION_AUTO is not set
# CONFIG_SWAP is not set
CONFIG_LOG_BUF_SHIFT=13
CONFIG_SYSFS_DEPRECATED=y
CONFIG_SYSFS_DEPRECATED_V2=y
CONFIG_KALLSYMS_ALL=y
# CONFIG_ELF_CORE is not set
CONFIG_SLAB=y
# CONFIG_BLK_DEV_BSG is not set
CONFIG_PARTITION_ADVANCED=y
# CONFIG_MSDOS_PARTITION is not set
# CONFIG_IOSCHED_DEADLINE is not set
# CONFIG_IOSCHED_CFQ is not set
CONFIG_FLATMEM_MANUAL=y
CONFIG_META12_FPGA=y
CONFIG_HZ_100=y
CONFIG_DEVTMPFS=y
CONFIG_DEVTMPFS_MOUNT=y
# CONFIG_STANDALONE is not set
# CONFIG_PREVENT_FIRMWARE_BUILD is not set
# CONFIG_FW_LOADER is not set
CONFIG_BLK_DEV_RAM=y
CONFIG_BLK_DEV_RAM_COUNT=1
CONFIG_BLK_DEV_RAM_SIZE=16384
# CONFIG_INPUT is not set
# CONFIG_SERIO is not set
# CONFIG_VT is not set
# CONFIG_LEGACY_PTYS is not set
# CONFIG_DEVKMEM is not set
# CONFIG_HW_RANDOM is not set
# CONFIG_HWMON is not set
# CONFIG_USB_SUPPORT is not set
# CONFIG_DNOTIFY is not set
CONFIG_TMPFS=y
# CONFIG_MISC_FILESYSTEMS is not set
# CONFIG_SCHED_DEBUG is not set
CONFIG_DEBUG_INFO=y
CONFIG_EXPERIMENTAL=y
# CONFIG_LOCALVERSION_AUTO is not set
# CONFIG_SWAP is not set
CONFIG_SYSVIPC=y
CONFIG_LOG_BUF_SHIFT=13
CONFIG_SYSFS_DEPRECATED=y
CONFIG_SYSFS_DEPRECATED_V2=y
CONFIG_KALLSYMS_ALL=y
# CONFIG_ELF_CORE is not set
CONFIG_SLAB=y
# CONFIG_BLK_DEV_BSG is not set
CONFIG_PARTITION_ADVANCED=y
# CONFIG_MSDOS_PARTITION is not set
# CONFIG_IOSCHED_DEADLINE is not set
# CONFIG_IOSCHED_CFQ is not set
CONFIG_METAG_L2C=y
CONFIG_FLATMEM_MANUAL=y
CONFIG_METAG_HALT_ON_PANIC=y
CONFIG_HZ_100=y
CONFIG_DEVTMPFS=y
# CONFIG_STANDALONE is not set
# CONFIG_PREVENT_FIRMWARE_BUILD is not set
# CONFIG_FW_LOADER is not set
CONFIG_BLK_DEV_RAM=y
CONFIG_BLK_DEV_RAM_COUNT=1
CONFIG_BLK_DEV_RAM_SIZE=16384
# CONFIG_INPUT is not set
# CONFIG_SERIO is not set
# CONFIG_VT is not set
# CONFIG_LEGACY_PTYS is not set
# CONFIG_DEVKMEM is not set
# CONFIG_HW_RANDOM is not set
# CONFIG_HWMON is not set
# CONFIG_USB_SUPPORT is not set
# CONFIG_DNOTIFY is not set
CONFIG_TMPFS=y
# CONFIG_MISC_FILESYSTEMS is not set
# CONFIG_SCHED_DEBUG is not set
CONFIG_DEBUG_INFO=y
CONFIG_EXPERIMENTAL=y
# CONFIG_LOCALVERSION_AUTO is not set
# CONFIG_SWAP is not set
CONFIG_SYSVIPC=y
CONFIG_LOG_BUF_SHIFT=13
CONFIG_SYSFS_DEPRECATED=y
CONFIG_SYSFS_DEPRECATED_V2=y
CONFIG_KALLSYMS_ALL=y
# CONFIG_ELF_CORE is not set
CONFIG_SLAB=y
# CONFIG_BLK_DEV_BSG is not set
CONFIG_PARTITION_ADVANCED=y
# CONFIG_MSDOS_PARTITION is not set
# CONFIG_IOSCHED_DEADLINE is not set
# CONFIG_IOSCHED_CFQ is not set
CONFIG_METAG_L2C=y
CONFIG_FLATMEM_MANUAL=y
CONFIG_METAG_HALT_ON_PANIC=y
CONFIG_SMP=y
CONFIG_HZ_100=y
CONFIG_DEVTMPFS=y
# CONFIG_STANDALONE is not set
# CONFIG_PREVENT_FIRMWARE_BUILD is not set
# CONFIG_FW_LOADER is not set
CONFIG_BLK_DEV_RAM=y
CONFIG_BLK_DEV_RAM_COUNT=1
CONFIG_BLK_DEV_RAM_SIZE=16384
# CONFIG_INPUT is not set
# CONFIG_SERIO is not set
# CONFIG_VT is not set
# CONFIG_LEGACY_PTYS is not set
# CONFIG_DEVKMEM is not set
# CONFIG_HW_RANDOM is not set
# CONFIG_HWMON is not set
# CONFIG_USB_SUPPORT is not set
# CONFIG_DNOTIFY is not set
CONFIG_TMPFS=y
# CONFIG_MISC_FILESYSTEMS is not set
# CONFIG_SCHED_DEBUG is not set
CONFIG_DEBUG_INFO=y
generic-y += auxvec.h
generic-y += bitsperlong.h
generic-y += bugs.h
generic-y += clkdev.h
generic-y += cputime.h
generic-y += current.h
generic-y += device.h
generic-y += dma.h
generic-y += emergency-restart.h
generic-y += errno.h
generic-y += exec.h
generic-y += fb.h
generic-y += fcntl.h
generic-y += ftrace.h
generic-y += futex.h
generic-y += hardirq.h
generic-y += hw_irq.h
generic-y += ioctl.h
generic-y += ioctls.h
generic-y += ipcbuf.h
generic-y += irq_regs.h
generic-y += kdebug.h
generic-y += kmap_types.h
generic-y += kvm_para.h
generic-y += local.h
generic-y += local64.h
generic-y += msgbuf.h
generic-y += mutex.h
generic-y += param.h
generic-y += pci.h
generic-y += percpu.h
generic-y += poll.h
generic-y += posix_types.h
generic-y += scatterlist.h
generic-y += sections.h
generic-y += sembuf.h
generic-y += serial.h
generic-y += shmbuf.h
generic-y += shmparam.h
generic-y += signal.h
generic-y += socket.h
generic-y += sockios.h
generic-y += stat.h
generic-y += statfs.h
generic-y += switch_to.h
generic-y += termbits.h
generic-y += termios.h
generic-y += timex.h
generic-y += trace_clock.h
generic-y += types.h
generic-y += ucontext.h
generic-y += unaligned.h
generic-y += user.h
generic-y += vga.h
generic-y += xor.h
# UAPI Header export list
include include/uapi/asm-generic/Kbuild.asm
header-y += byteorder.h
header-y += ptrace.h
header-y += resource.h
header-y += sigcontext.h
header-y += siginfo.h
header-y += swab.h
header-y += unistd.h
generic-y += mman.h
generic-y += setup.h
#
# Makefile for the Linux/Meta kernel.
#
extra-y += head.o
extra-y += vmlinux.lds
obj-y += cachepart.o
obj-y += clock.o
obj-y += core_reg.o
obj-y += devtree.o
obj-y += dma.o
obj-y += irq.o
obj-y += kick.o
obj-y += machines.o
obj-y += process.o
obj-y += ptrace.o
obj-y += setup.o
obj-y += signal.o
obj-y += stacktrace.o
obj-y += sys_metag.o
obj-y += tbiunexp.o
obj-y += time.o
obj-y += topology.o
obj-y += traps.o
obj-y += user_gateway.o
obj-$(CONFIG_METAG_COREMEM) += coremem.o
obj-$(CONFIG_DYNAMIC_FTRACE) += ftrace.o
obj-$(CONFIG_FUNCTION_TRACER) += ftrace_stub.o
obj-$(CONFIG_MODULES) += metag_ksyms.o
obj-$(CONFIG_MODULES) += module.o
obj-$(CONFIG_PERF_EVENTS) += perf_callchain.o
obj-$(CONFIG_SMP) += smp.o
obj-$(CONFIG_METAG_SUSPEND_MEM) += suspend.o
obj-$(CONFIG_METAG_USER_TCM) += tcm.o
/*
* This program is used to generate definitions needed by
* assembly language modules.
*
*/
#include <linux/kbuild.h>
#include <linux/thread_info.h>
int main(void)
{
DEFINE(THREAD_INFO_SIZE, sizeof(struct thread_info));
return 0;
}
#include <linux/export.h>
#include <linux/linkage.h>
#include <linux/string.h>
#include <linux/mm.h>
#include <linux/user.h>
#include <linux/interrupt.h>
#include <linux/hardirq.h>
#include <asm/setup.h>
#include <asm/checksum.h>
#include <asm/uaccess.h>
#include <asm/traps.h>
#include <asm/tbx.h>
/* uaccess symbols */
EXPORT_SYMBOL(__copy_user_zeroing);
EXPORT_SYMBOL(__copy_user);
EXPORT_SYMBOL(__get_user_asm_b);
EXPORT_SYMBOL(__get_user_asm_w);
EXPORT_SYMBOL(__get_user_asm_d);
EXPORT_SYMBOL(__put_user_asm_b);
EXPORT_SYMBOL(__put_user_asm_w);
EXPORT_SYMBOL(__put_user_asm_d);
EXPORT_SYMBOL(__put_user_asm_l);
EXPORT_SYMBOL(__strncpy_from_user);
EXPORT_SYMBOL(strnlen_user);
EXPORT_SYMBOL(__do_clear_user);
EXPORT_SYMBOL(pTBI_get);
EXPORT_SYMBOL(meta_memoffset);
EXPORT_SYMBOL(kick_register_func);
EXPORT_SYMBOL(kick_unregister_func);
#ifdef CONFIG_SMP
EXPORT_SYMBOL(get_trigger_mask);
#else
EXPORT_SYMBOL(global_trigger_mask);
#endif
EXPORT_SYMBOL(empty_zero_page);
EXPORT_SYMBOL(pfn_base);
#ifdef CONFIG_FLATMEM
/* needed for the pfn_valid macro */
EXPORT_SYMBOL(max_pfn);
EXPORT_SYMBOL(min_low_pfn);
#endif
/* TBI symbols */
EXPORT_SYMBOL(__TBI);
EXPORT_SYMBOL(__TBIFindSeg);
EXPORT_SYMBOL(__TBIPoll);
EXPORT_SYMBOL(__TBITimeStamp);
#define DECLARE_EXPORT(name) extern void name(void); EXPORT_SYMBOL(name)
/* libgcc functions */
DECLARE_EXPORT(__ashldi3);
DECLARE_EXPORT(__ashrdi3);
DECLARE_EXPORT(__lshrdi3);
DECLARE_EXPORT(__udivsi3);
DECLARE_EXPORT(__divsi3);
DECLARE_EXPORT(__umodsi3);
DECLARE_EXPORT(__modsi3);
DECLARE_EXPORT(__muldi3);
DECLARE_EXPORT(__cmpdi2);
DECLARE_EXPORT(__ucmpdi2);
/* Maths functions */
EXPORT_SYMBOL(div_u64);
EXPORT_SYMBOL(div_s64);
/* String functions */
EXPORT_SYMBOL(memcpy);
EXPORT_SYMBOL(memset);
EXPORT_SYMBOL(memmove);
/* ld script to make Meta Linux kernel */
#include <asm/thread_info.h>
#include <asm/page.h>
#include <asm/cache.h>
#include <asm-generic/vmlinux.lds.h>
OUTPUT_FORMAT("elf32-metag", "elf32-metag", "elf32-metag")
OUTPUT_ARCH(metag)
ENTRY(__start)
_jiffies = _jiffies_64;
SECTIONS
{
. = CONFIG_PAGE_OFFSET;
_text = .;
__text = .;
__stext = .;
HEAD_TEXT_SECTION
.text : {
TEXT_TEXT
SCHED_TEXT
LOCK_TEXT
KPROBES_TEXT
IRQENTRY_TEXT
*(.text.*)
*(.gnu.warning)
}
__etext = .; /* End of text section */
__sdata = .;
RO_DATA_SECTION(PAGE_SIZE)
RW_DATA_SECTION(L1_CACHE_BYTES, PAGE_SIZE, THREAD_SIZE)
__edata = .; /* End of data section */
EXCEPTION_TABLE(16)
NOTES
. = ALIGN(PAGE_SIZE); /* Init code and data */
___init_begin = .;
INIT_TEXT_SECTION(PAGE_SIZE)
INIT_DATA_SECTION(16)
.init.arch.info : {
___arch_info_begin = .;
*(.arch.info.init)
___arch_info_end = .;
}
PERCPU_SECTION(L1_CACHE_BYTES)
___init_end = .;
BSS_SECTION(0, PAGE_SIZE, 0)
__end = .;
. = ALIGN(PAGE_SIZE);
__heap_start = .;
DWARF_DEBUG
/* When something in the kernel is NOT compiled as a module, the
* module cleanup code and data are put into these segments. Both
* can then be thrown away, as cleanup code is never called unless
* it's a module.
*/
DISCARDS
}
#
# Makefile for Meta-specific library files.
#
lib-y += usercopy.o
lib-y += copy_page.o
lib-y += clear_page.o
lib-y += memcpy.o
lib-y += memmove.o
lib-y += memset.o
lib-y += delay.o
lib-y += div64.o
lib-y += muldi3.o
lib-y += ashrdi3.o
lib-y += ashldi3.o
lib-y += lshrdi3.o
lib-y += divsi3.o
lib-y += modsi3.o
lib-y += cmpdi2.o
lib-y += ucmpdi2.o
lib-y += ip_fast_csum.o
lib-y += checksum.o
menu "Memory management options"
config PAGE_OFFSET
hex "Kernel page offset address"
default "0x40000000"
help
This option allows you to set the virtual address at which the
kernel will be mapped to.
endmenu
config KERNEL_4M_PAGES
bool "Map kernel with 4MB pages"
depends on METAG_META21_MMU
default y
help
Map the kernel with large pages to reduce TLB pressure.
choice
prompt "User page size"
default PAGE_SIZE_4K
config PAGE_SIZE_4K
bool "4kB"
help
This is the default page size used by all Meta cores.
config PAGE_SIZE_8K
bool "8kB"
depends on METAG_META21_MMU
help
This enables 8kB pages as supported by Meta 2.x and later MMUs.
config PAGE_SIZE_16K
bool "16kB"
depends on METAG_META21_MMU
help
This enables 16kB pages as supported by Meta 2.x and later MMUs.
endchoice
config NUMA
bool "Non Uniform Memory Access (NUMA) Support"
help
Some Meta systems have MMU-mappable on-chip memories with
lower latencies than main memory. This enables support for
these blocks by binding them to nodes and allowing
memory policies to be used for prioritizing and controlling
allocation behaviour.
config FORCE_MAX_ZONEORDER
int "Maximum zone order"
range 10 32
default "10"
help
The kernel memory allocator divides physically contiguous memory
blocks into "zones", where each zone is a power of two number of
pages. This option selects the largest power of two that the kernel
keeps in the memory allocator. If you need to allocate very large
blocks of physically contiguous memory, then you may need to
increase this value.
This config option is actually maximum order plus one. For example,
a value of 11 means that the largest free memory block is 2^10 pages.
The page size is not necessarily 4KB. Keep this in mind
when choosing a value for this option.
config METAG_L2C
bool "Level 2 Cache Support"
depends on METAG_META21
help
Press y here to enable support for the Meta Level 2 (L2) cache. This
will enable the cache at start up if it hasn't already been enabled
by the bootloader.
If the bootloader enables the L2 you must press y here to ensure the
kernel takes the appropriate actions to keep the cache coherent.
config NODES_SHIFT
int
default "1"
depends on NEED_MULTIPLE_NODES
config ARCH_FLATMEM_ENABLE
def_bool y
depends on !NUMA
config ARCH_SPARSEMEM_ENABLE
def_bool y
select SPARSEMEM_STATIC
config ARCH_SPARSEMEM_DEFAULT
def_bool y
config MAX_ACTIVE_REGIONS
int
default "2" if SPARSEMEM
default "1"
config ARCH_POPULATES_NODE_MAP
def_bool y
config ARCH_SELECT_MEMORY_MODEL
def_bool y
config SYS_SUPPORTS_HUGETLBFS
def_bool y
depends on METAG_META21_MMU
choice
prompt "HugeTLB page size"
depends on METAG_META21_MMU && HUGETLB_PAGE
default HUGETLB_PAGE_SIZE_1M
config HUGETLB_PAGE_SIZE_8K
bool "8kB"
depends on PAGE_SIZE_4K
config HUGETLB_PAGE_SIZE_16K
bool "16kB"
depends on PAGE_SIZE_4K || PAGE_SIZE_8K
config HUGETLB_PAGE_SIZE_32K
bool "32kB"
config HUGETLB_PAGE_SIZE_64K
bool "64kB"
config HUGETLB_PAGE_SIZE_128K
bool "128kB"
config HUGETLB_PAGE_SIZE_256K
bool "256kB"
config HUGETLB_PAGE_SIZE_512K
bool "512kB"
config HUGETLB_PAGE_SIZE_1M
bool "1MB"
config HUGETLB_PAGE_SIZE_2M
bool "2MB"
config HUGETLB_PAGE_SIZE_4M
bool "4MB"
endchoice
config METAG_COREMEM
bool
default y if SUSPEND
source "mm/Kconfig"
#
# Makefile for the linux Meta-specific parts of the memory manager.
#
obj-y += cache.o
obj-y += extable.o
obj-y += fault.o
obj-y += init.o
obj-y += ioremap.o
obj-y += maccess.o
mmu-y := mmu-meta1.o
mmu-$(CONFIG_METAG_META21_MMU) := mmu-meta2.o
obj-y += $(mmu-y)
obj-$(CONFIG_HIGHMEM) += highmem.o
obj-$(CONFIG_HUGETLB_PAGE) += hugetlbpage.o
obj-$(CONFIG_METAG_L2C) += l2cache.o
obj-$(CONFIG_NUMA) += numa.o
#
# Makefile for TBX library files..
#
asflags-y += -mmetac=2.1 -Wa,-mfpu=metac21 -mdsp
asflags-$(CONFIG_SMP) += -DTBX_PERCPU_SP_SAVE
ccflags-y += -mmetac=2.1
lib-y += tbicore.o
lib-y += tbictx.o
lib-y += tbidefr.o
lib-y += tbilogf.o
lib-y += tbipcx.o
lib-y += tbiroot.o
lib-y += tbisoft.o
lib-y += tbistring.o
lib-y += tbitimer.o
lib-$(CONFIG_METAG_DSP) += tbidspram.o
lib-$(CONFIG_METAG_FPU) += tbictxfpu.o
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