CRIS: Drop support for the CRIS port

The port was added back in 2000 so it's no longer even a good source
of inspiration for newer ports (if it ever was)

The last SoC (ARTPEC-3) with a CRIS main CPU was launched in 2008.

Coupled with time and working developer board hardware being
in low supply, it's time to drop the port from Linux.

So long and thanks for all the fish!
Signed-off-by: NJesper Nilsson <jesper.nilsson@axis.com>
Signed-off-by: NArnd Bergmann <arnd@arndb.de>

Documentation/00-INDEX

@@ -112,8 +112,6 @@ cputopology.txt
 	- documentation on how CPU topology info is exported via sysfs.
 crc32.txt
 	- brief tutorial on CRC computation
-cris/
-	- directory with info about Linux on CRIS architecture.
 crypto/
 	- directory with info on the Crypto API.
 dcdbas.txt

Documentation/cris/README

-Linux on the CRIS architecture
-==============================
-
-This is a port of Linux to Axis Communications ETRAX 100LX,
-ETRAX FS and ARTPEC-3 embedded network CPUs.
-
-For more information about CRIS and ETRAX please see further below.
-
-In order to compile this you need a version of gcc with support for the
-ETRAX chip family. Please see this link for more information on how to
-download the compiler and other tools useful when building and booting
-software for the ETRAX platform:
-
-http://developer.axis.com/wiki/doku.php?id=axis:install-howto-2_20
-
-What is CRIS ?
---------------
-
-CRIS is an acronym for 'Code Reduced Instruction Set'. It is the CPU
-architecture in Axis Communication AB's range of embedded network CPU's,
-called ETRAX.
-
-The ETRAX 100LX chip
---------------------
-
-For reference, please see the following link:
-
-http://www.axis.com/products/dev_etrax_100lx/index.htm
-
-The ETRAX 100LX is a 100 MIPS processor with 8kB cache, MMU, and a very broad
-range of built-in interfaces, all with modern scatter/gather DMA.
-
-Memory interfaces:
-
-	* SRAM
-	* NOR-flash/ROM
-	* EDO or page-mode DRAM
-	* SDRAM
-
-I/O interfaces:
-
-	* one 10/100 Mbit/s ethernet controller
-	* four serial-ports (up to 6 Mbit/s)
-	* two synchronous serial-ports for multimedia codec's etc.
-	* USB host controller and USB slave
-	* ATA
-	* SCSI
-	* two parallel-ports
-	* two generic 8-bit ports
-
-	(not all interfaces are available at the same time due to chip pin
-         multiplexing)
-
-ETRAX 100LX is CRISv10 architecture.
-
-
-The ETRAX FS and ARTPEC-3 chips
--------------------------------
-
-The ETRAX FS is a 200MHz 32-bit RISC processor with on-chip 16kB
-I-cache and 16kB D-cache and with a wide range of device interfaces
-including multiple high speed serial ports and an integrated USB 1.1 PHY.
-
-The ARTPEC-3 is a variant of the ETRAX FS with additional IO-units
-used by the Axis Communications network cameras.
-
-See below link for more information:
-
-http://www.axis.com/products/dev_etrax_fs/index.htm
-
-ETRAX FS and ARTPEC-3 are both CRISv32 architectures.
-
-Bootlog
--------
-
-Just as an example, this is the debug-output from a boot of Linux 2.4 on
-a board with ETRAX 100LX. The displayed BogoMIPS value is 5 times too small :)
-At the end you see some user-mode programs booting like telnet and ftp daemons.
-
-Linux version 2.4.1 (bjornw@godzilla.axis.se) (gcc version 2.96 20000427 (experimental)) #207 Wed Feb 21 15:48:15 CET 2001
-ROM fs in RAM, size 1376256 bytes
-Setting up paging and the MMU.
-On node 0 totalpages: 2048
-zone(0): 2048 pages.
-zone(1): 0 pages.
-zone(2): 0 pages.
-Linux/CRIS port on ETRAX 100LX (c) 2001 Axis Communications AB
-Kernel command line: 
-Calibrating delay loop... 19.91 BogoMIPS
-Memory: 13872k/16384k available (587k kernel code, 2512k reserved, 44k data, 24k init)
-kmem_create: Forcing size word alignment - vm_area_struct
-kmem_create: Forcing size word alignment - filp
-Dentry-cache hash table entries: 2048 (order: 1, 16384 bytes)
-Buffer-cache hash table entries: 2048 (order: 0, 8192 bytes)
-Page-cache hash table entries: 2048 (order: 0, 8192 bytes)
-kmem_create: Forcing size word alignment - kiobuf
-kmem_create: Forcing size word alignment - bdev_cache
-Inode-cache hash table entries: 1024 (order: 0, 8192 bytes)
-kmem_create: Forcing size word alignment - inode_cache
-POSIX conformance testing by UNIFIX
-Linux NET4.0 for Linux 2.4
-Based upon Swansea University Computer Society NET3.039
-Starting kswapd v1.8
-kmem_create: Forcing size word alignment - file lock cache
-kmem_create: Forcing size word alignment - blkdev_requests
-block: queued sectors max/low 9109kB/3036kB, 64 slots per queue
-ETRAX 100LX 10/100MBit ethernet v2.0 (c) 2000 Axis Communications AB
-eth0 initialized
-eth0: changed MAC to 00:40:8C:CD:00:00
-ETRAX 100LX serial-driver $Revision: 1.7 $, (c) 2000 Axis Communications AB
-ttyS0 at 0xb0000060 is a builtin UART with DMA
-ttyS1 at 0xb0000068 is a builtin UART with DMA
-ttyS2 at 0xb0000070 is a builtin UART with DMA
-ttyS3 at 0xb0000078 is a builtin UART with DMA
-Axis flash mapping: 200000 at 50000000
-Axis flash: Found 1 x16 CFI device at 0x0 in 16 bit mode
- Amd/Fujitsu Extended Query Table v1.0 at 0x0040
-Axis flash: JEDEC Device ID is 0xC4. Assuming broken CFI table.
-Axis flash: Swapping erase regions for broken CFI table.
-number of CFI chips: 1
- Using default partition table
-I2C driver v2.2, (c) 1999-2001 Axis Communications AB
-ETRAX 100LX GPIO driver v2.1, (c) 2001 Axis Communications AB
-NET4: Linux TCP/IP 1.0 for NET4.0
-IP Protocols: ICMP, UDP, TCP
-kmem_create: Forcing size word alignment - ip_dst_cache
-IP: routing cache hash table of 1024 buckets, 8Kbytes
-TCP: Hash tables configured (established 2048 bind 2048)
-NET4: Unix domain sockets 1.0/SMP for Linux NET4.0.
-VFS: Mounted root (cramfs filesystem) readonly.
-Init starts up...
-Mounted none on /proc ok.
-Setting up eth0 with ip 10.13.9.116 and mac 00:40:8c:18:04:60
-eth0: changed MAC to 00:40:8C:18:04:60
-Setting up lo with ip 127.0.0.1
-Default gateway is 10.13.9.1
-Hostname is bbox1
-Telnetd starting, using port 23.
-  using /bin/sash as shell.
-sftpd[15]: sftpd $Revision: 1.7 $ starting up
-
-
-
-And here is how some /proc entries look:
-
-17# cd /proc
-17# cat cpuinfo
-cpu             : CRIS
-cpu revision    : 10
-cpu model       : ETRAX 100LX
-cache size      : 8 kB
-fpu             : no
-mmu             : yes
-ethernet        : 10/100 Mbps
-token ring      : no
-scsi            : yes
-ata             : yes
-usb             : yes
-bogomips        : 99.84
-
-17# cat meminfo
-        total:    used:    free:  shared: buffers:  cached:
-Mem:   7028736   925696  6103040   114688        0   229376
-Swap:        0        0        0
-MemTotal:         6864 kB
-MemFree:          5960 kB
-MemShared:         112 kB
-Buffers:             0 kB
-Cached:            224 kB
-Active:            224 kB
-Inact_dirty:         0 kB
-Inact_clean:         0 kB
-Inact_target:        0 kB
-HighTotal:           0 kB
-HighFree:            0 kB
-LowTotal:         6864 kB
-LowFree:          5960 kB
-SwapTotal:           0 kB
-SwapFree:            0 kB
-17# ls -l /bin
--rwxr-xr-x  1 342      100         10356  Jan 01 00:00 ifconfig
--rwxr-xr-x  1 342      100         17548  Jan 01 00:00 init
--rwxr-xr-x  1 342      100          9488  Jan 01 00:00 route
--rwxr-xr-x  1 342      100         46036  Jan 01 00:00 sftpd
--rwxr-xr-x  1 342      100         48104  Jan 01 00:00 sh
--rwxr-xr-x  1 342      100         16252  Jan 01 00:00 telnetd
-
-
-
-
-
-
-
-
-

Documentation/devicetree/bindings/cris/axis.txt

-Axis Communications AB
-ARTPEC series SoC Device Tree Bindings
-
-
-CRISv32 based SoCs are ETRAX FS and ARTPEC-3:
-
-    - compatible = "axis,crisv32";
-
-

Documentation/devicetree/bindings/cris/boards.txt

-Boards based on the CRIS SoCs:
-
-Required root node properties:
-    - compatible = should be one or more of the following:
-	- "axis,dev88"	- for Axis devboard 88 with ETRAX FS
-
-Optional:
-

Documentation/devicetree/bindings/interrupt-controller/axis,crisv32-intc.txt

-* CRISv32 Interrupt Controller
-
-Interrupt controller for the CRISv32 SoCs.
-
-Main node required properties:
-
-- compatible : should be:
-	"axis,crisv32-intc"
-- interrupt-controller : Identifies the node as an interrupt controller
-- #interrupt-cells : Specifies the number of cells needed to encode an
-  interrupt source. The type shall be a <u32> and the value shall be 1.
-- reg: physical base address and size of the intc registers map.
-
-Example:
-
-	intc: interrupt-controller {
-		compatible = "axis,crisv32-intc";
-		reg = <0xb001c000 0x1000>;
-		interrupt-controller;
-		#interrupt-cells = <1>;
-	};
-
-

MAINTAINERS

@@ -3704,16 +3704,6 @@ S:	Maintained
 F:	Documentation/filesystems/cramfs.txt
 F:	fs/cramfs/
 
-CRIS PORT
-M:	Mikael Starvik <starvik@axis.com>
-M:	Jesper Nilsson <jesper.nilsson@axis.com>
-L:	linux-cris-kernel@axis.com
-W:	http://developer.axis.com
-T:	git git://git.kernel.org/pub/scm/linux/kernel/git/jesper/cris.git
-S:	Maintained
-F:	arch/cris/
-F:	drivers/tty/serial/crisv10.*
-
 CRYPTO API
 M:	Herbert Xu <herbert@gondor.apana.org.au>
 M:	"David S. Miller" <davem@davemloft.net>

arch/cris/Kconfig

-# SPDX-License-Identifier: GPL-2.0
-config MMU
-	bool
-	default y
-
-config ZONE_DMA
-	bool
-	default y
-
-config RWSEM_GENERIC_SPINLOCK
-	bool
-	default y
-
-config RWSEM_XCHGADD_ALGORITHM
-	bool
-
-config ARCH_HAS_ILOG2_U32
-	bool
-	default n
-
-config ARCH_HAS_ILOG2_U64
-	bool
-	default n
-
-config GENERIC_HWEIGHT
-	bool
-	default y
-
-config GENERIC_CALIBRATE_DELAY
-	bool
-	default y
-
-config NO_IOPORT_MAP
-	def_bool y if !PCI
-
-config NO_DMA
-	def_bool y if !PCI
-
-config FORCE_MAX_ZONEORDER
-	int
-	default 6
-
-config TRACE_IRQFLAGS_SUPPORT
-	depends on ETRAX_ARCH_V32
-	def_bool y
-
-config STACKTRACE_SUPPORT
-	def_bool y
-
-config LOCKDEP_SUPPORT
-	depends on ETRAX_ARCH_V32
-	def_bool y
-
-config CRIS
-	bool
-	default y
-	select HAVE_IDE
-	select GENERIC_ATOMIC64
-	select HAVE_UID16
-	select VIRT_TO_BUS
-	select ARCH_WANT_IPC_PARSE_VERSION
-	select GENERIC_IRQ_SHOW
-	select GENERIC_IOMAP
-	select MODULES_USE_ELF_RELA
-	select CLONE_BACKWARDS2
-	select HAVE_EXIT_THREAD if ETRAX_ARCH_V32
-	select OLD_SIGSUSPEND
-	select OLD_SIGACTION
-	select GPIOLIB
-	select IRQ_DOMAIN if ETRAX_ARCH_V32
-	select OF if ETRAX_ARCH_V32
-	select OF_EARLY_FLATTREE if ETRAX_ARCH_V32
-	select CLKSRC_MMIO if ETRAX_ARCH_V32
-	select GENERIC_CLOCKEVENTS if ETRAX_ARCH_V32
-	select GENERIC_SCHED_CLOCK if ETRAX_ARCH_V32
-	select HAVE_DEBUG_BUGVERBOSE if ETRAX_ARCH_V32
-	select HAVE_NMI
-	select DMA_DIRECT_OPS if PCI
-
-config HZ
-	int
-	default 100
-
-config NR_CPUS
-	int
-	default "1"
-
-config BUILTIN_DTB
-	string "DTB to build into the kernel image"
-	depends on OF
-
-source "init/Kconfig"
-
-source "kernel/Kconfig.freezer"
-
-menu "General setup"
-
-source "fs/Kconfig.binfmt"
-
-config ETRAX_CMDLINE
-	string "Kernel command line"
-	default "root=/dev/mtdblock3"
-	help
-	  Pass additional commands to the kernel.
-
-config ETRAX_WATCHDOG
-	bool "Enable ETRAX watchdog"
-	help
-	  Enable the built-in watchdog timer support on ETRAX based embedded
-	  network computers.
-
-config ETRAX_WATCHDOG_NICE_DOGGY
-	bool "Disable watchdog during Oops printouts"
-	depends on ETRAX_WATCHDOG
-	help
-	  By enabling this you make sure that the watchdog does not bite while
-	  printing oopses. Recommended for development systems but not for
-	  production releases.
-
-config ETRAX_FAST_TIMER
-       bool "Enable ETRAX fast timer API"
-       help
-         This options enables the API to a fast timer implementation using
-	 timer1 to get sub jiffie resolution timers (primarily one-shot
-	 timers).
-	 This is needed if CONFIG_ETRAX_SERIAL_FAST_TIMER is enabled.
-
-config ETRAX_KMALLOCED_MODULES
-	bool "Enable module allocation with kmalloc"
-	help
-	  Enable module allocation with kmalloc instead of vmalloc.
-
-source "kernel/Kconfig.preempt"
-
-source mm/Kconfig
-
-endmenu
-
-menu "Hardware setup"
-
-choice
-	prompt "Processor type"
-	default ETRAX100LX
-
-config ETRAX100LX
-	bool "ETRAX-100LX-v1"
-	select ARCH_USES_GETTIMEOFFSET
-	help
-	  Support version 1 of the ETRAX 100LX.
-
-config ETRAX100LX_V2
-	bool "ETRAX-100LX-v2"
-	select ARCH_USES_GETTIMEOFFSET
-	help
-	  Support version 2 of the ETRAX 100LX.
-
-config ETRAXFS
-	bool "ETRAX-FS-V32"
-	help
-	  Support CRIS V32.
-
-config CRIS_MACH_ARTPEC3
-        bool "ARTPEC-3"
-        help
-          Support Axis ARTPEC-3.
-
-endchoice
-
-config ETRAX_ARCH_V10
-       bool
-       default y if ETRAX100LX || ETRAX100LX_V2
-       default n if !(ETRAX100LX || ETRAX100LX_V2)
-       select TTY
-
-config ETRAX_ARCH_V32
-       bool
-       default y if (ETRAXFS || CRIS_MACH_ARTPEC3)
-       default n if !(ETRAXFS || CRIS_MACH_ARTPEC3)
-
-config ETRAX_DRAM_SIZE
-	int "DRAM size (dec, in MB)"
-	default "8"
-	help
-	  Size of DRAM (decimal in MB) typically 2, 8 or 16.
-
-config ETRAX_VMEM_SIZE
-       int "Video memory size (dec, in MB)"
-       depends on ETRAX_ARCH_V32 && !ETRAXFS
-       default 8 if !ETRAXFS
-       help
-	Size of Video accessible memory (decimal, in MB).
-
-config ETRAX_FLASH_BUSWIDTH
-	int "Buswidth of NOR flash in bytes"
-	default "2"
-	help
-	  Width in bytes of the NOR Flash bus (1, 2 or 4). Is usually 2.
-
-config ETRAX_FLASH1_SIZE
-       int "FLASH1 size (dec, in MB. 0 = Unknown)"
-       default "0"
-
-choice
-	prompt "Product debug-port"
-	default ETRAX_DEBUG_PORT0
-
-config ETRAX_DEBUG_PORT0
-	bool "Serial-0"
-	help
-	  Choose a serial port for the ETRAX debug console.  Default to
-	  port 0.
-
-config ETRAX_DEBUG_PORT1
-	bool "Serial-1"
-	help
-	  Use serial port 1 for the console.
-
-config ETRAX_DEBUG_PORT2
-	bool "Serial-2"
-	help
-	  Use serial port 2 for the console.
-
-config ETRAX_DEBUG_PORT3
-	bool "Serial-3"
-	help
-	  Use serial port 3 for the console.
-
-config ETRAX_DEBUG_PORT_NULL
-	bool "disabled"
-	help
-	  Disable serial-port debugging.
-
-endchoice
-
-choice
-	prompt "Kernel GDB port"
-	depends on ETRAX_KGDB
-	default ETRAX_KGDB_PORT0
-	help
-	  Choose a serial port for kernel debugging.  NOTE: This port should
-	  not be enabled under Drivers for built-in interfaces (as it has its
-	  own initialization code) and should not be the same as the debug port.
-
-config ETRAX_KGDB_PORT0
-	bool "Serial-0"
-	help
-	  Use serial port 0 for kernel debugging.
-
-config ETRAX_KGDB_PORT1
-	bool "Serial-1"
-	help
-	  Use serial port 1 for kernel debugging.
-
-config ETRAX_KGDB_PORT2
-	bool "Serial-2"
-	help
-	  Use serial port 2 for kernel debugging.
-
-config ETRAX_KGDB_PORT3
-	bool "Serial-3"
-	help
-	  Use serial port 3 for kernel debugging.
-
-endchoice
-
-source arch/cris/arch-v10/Kconfig
-source arch/cris/arch-v32/Kconfig
-
-endmenu
-
-source "net/Kconfig"
-
-# bring in ETRAX built-in drivers
-menu "Drivers for built-in interfaces"
-source arch/cris/arch-v10/drivers/Kconfig
-source arch/cris/arch-v32/drivers/Kconfig
-
-config ETRAX_AXISFLASHMAP
-	bool "Axis flash-map support"
-	select MTD
-	select MTD_CFI
-	select MTD_CFI_AMDSTD
-	select MTD_JEDECPROBE if ETRAX_ARCH_V32
-	select MTD_BLOCK
-	select MTD_COMPLEX_MAPPINGS
-	help
-	  This option enables MTD mapping of flash devices.  Needed to use
-	  flash memories.  If unsure, say Y.
-
-config ETRAX_SYNCHRONOUS_SERIAL
-	bool "Synchronous serial-port support"
-	help
-	  Select this to enable the synchronous serial port driver.
-
-config ETRAX_SYNCHRONOUS_SERIAL_PORT0
-	bool "Synchronous serial port 0 enabled"
-	depends on ETRAX_SYNCHRONOUS_SERIAL
-	help
-	  Enabled synchronous serial port 0.
-
-config ETRAX_SYNCHRONOUS_SERIAL0_DMA
-	bool "Enable DMA on synchronous serial port 0."
-	depends on ETRAX_SYNCHRONOUS_SERIAL_PORT0
-	help
-	  A synchronous serial port can run in manual or DMA mode.
-	  Selecting this option will make it run in DMA mode.
-
-config ETRAX_SYNCHRONOUS_SERIAL_PORT1
-	bool "Synchronous serial port 1 enabled"
-	depends on ETRAX_SYNCHRONOUS_SERIAL && (ETRAXFS || ETRAX_ARCH_V10)
-	help
-	  Enabled synchronous serial port 1.
-
-config ETRAX_SYNCHRONOUS_SERIAL1_DMA
-	bool "Enable DMA on synchronous serial port 1."
-	depends on ETRAX_SYNCHRONOUS_SERIAL_PORT1
-	help
-	  A synchronous serial port can run in manual or DMA mode.
-	  Selecting this option will make it run in DMA mode.
-
-choice
-	prompt "Network LED behavior"
-	depends on ETRAX_ETHERNET
-	default ETRAX_NETWORK_LED_ON_WHEN_ACTIVITY
-
-config ETRAX_NETWORK_LED_ON_WHEN_LINK
-	bool "LED_on_when_link"
-	help
-	  Selecting LED_on_when_link will light the LED when there is a
-	  connection and will flash off when there is activity.
-
-	  Selecting LED_on_when_activity will light the LED only when
-	  there is activity.
-
-	  This setting will also affect the behaviour of other activity LEDs
-	  e.g. Bluetooth.
-
-config ETRAX_NETWORK_LED_ON_WHEN_ACTIVITY
-	bool "LED_on_when_activity"
-	help
-	  Selecting LED_on_when_link will light the LED when there is a
-	  connection and will flash off when there is activity.
-
-	  Selecting LED_on_when_activity will light the LED only when
-	  there is activity.
-
-	  This setting will also affect the behaviour of other activity LEDs
-	  e.g. Bluetooth.
-
-endchoice
-
-choice
-	prompt "Ser0 DMA out channel"
-	depends on ETRAX_SERIAL_PORT0
-	default ETRAX_SERIAL_PORT0_DMA6_OUT if ETRAX_ARCH_V32
-	default ETRAX_SERIAL_PORT0_NO_DMA_OUT if ETRAX_ARCH_V10
-
-config ETRAX_SERIAL_PORT0_NO_DMA_OUT
-	bool "Ser0 uses no DMA for output"
-	help
-	  Do not use DMA for ser0 output.
-
-config ETRAX_SERIAL_PORT0_DMA6_OUT
-	bool "Ser0 uses DMA6 for output"
-	depends on ETRAXFS
-	help
-	  Enables the DMA6 output channel for ser0 (ttyS0).
-	  If you do not enable DMA, an interrupt for each character will be
-	  used when transmitting data.
-	  Normally you want to use DMA, unless you use the DMA channel for
-	  something else.
-
-config ETRAX_SERIAL_PORT0_DMA0_OUT
-	bool "Ser0 uses DMA0 for output"
-	depends on CRIS_MACH_ARTPEC3
-	help
-	  Enables the DMA0 output channel for ser0 (ttyS0).
-	  If you do not enable DMA, an interrupt for each character will be
-	  used when transmitting data.
-	  Normally you want to use DMA, unless you use the DMA channel for
-	  something else.
-
-endchoice
-
-choice
-	prompt "Ser0 DMA in channel "
-	depends on ETRAX_SERIAL_PORT0
-	default ETRAX_SERIAL_PORT0_NO_DMA_IN if ETRAX_ARCH_V32
-	default ETRAX_SERIAL_PORT0_DMA7_IN if ETRAX_ARCH_V10
-	help
-	  What DMA channel to use for ser0.
-
-config ETRAX_SERIAL_PORT0_NO_DMA_IN
-	bool "Ser0 uses no DMA for input"
-	help
-	  Do not use DMA for ser0 input.
-
-config ETRAX_SERIAL_PORT0_DMA7_IN
-	bool "Ser0 uses DMA7 for input"
-	depends on ETRAXFS
-	help
-	  Enables the DMA7 input channel for ser0 (ttyS0).
-	  If you do not enable DMA, an interrupt for each character will be
-	  used when receiving data.
-	  Normally you want to use DMA, unless you use the DMA channel for
-	  something else.
-
-config ETRAX_SERIAL_PORT0_DMA1_IN
-	bool "Ser0 uses DMA1 for input"
-	depends on CRIS_MACH_ARTPEC3
-	help
-	  Enables the DMA1 input channel for ser0 (ttyS0).
-	  If you do not enable DMA, an interrupt for each character will be
-	  used when receiving data.
-	  Normally you want to use DMA, unless you use the DMA channel for
-	  something else.
-
-endchoice
-
-choice
-	prompt "Ser1 DMA in channel "
-	depends on ETRAX_SERIAL_PORT1
-	default ETRAX_SERIAL_PORT1_NO_DMA_IN if ETRAX_ARCH_V32
-	default ETRAX_SERIAL_PORT1_DMA9_IN if ETRAX_ARCH_V10
-	help
-	  What DMA channel to use for ser1.
-
-config ETRAX_SERIAL_PORT1_NO_DMA_IN
-	bool "Ser1 uses no DMA for input"
-	help
-	  Do not use DMA for ser1 input.
-
-config ETRAX_SERIAL_PORT1_DMA5_IN
-	bool "Ser1 uses DMA5 for input"
-	depends on ETRAX_ARCH_V32
-	help
-	  Enables the DMA5 input channel for ser1 (ttyS1).
-	  If you do not enable DMA, an interrupt for each character will be
-	  used when receiving data.
-	  Normally you want this on, unless you use the DMA channel for
-	  something else.
-
-config ETRAX_SERIAL_PORT1_DMA9_IN
-	depends on ETRAX_ARCH_V10
-	bool "Ser1 uses DMA9 for input"
-
-endchoice
-
-
-choice
-	prompt "Ser1 DMA out channel"
-	depends on ETRAX_SERIAL_PORT1
-	default ETRAX_SERIAL_PORT1_NO_DMA_OUT if ETRAX_ARCH_V32
-	default ETRAX_SERIAL_PORT1_DMA8_OUT if ETRAX_ARCH_V10
-	help
-	  What DMA channel to use for ser1.
-
-config ETRAX_SERIAL_PORT1_NO_DMA_OUT
-	bool "Ser1 uses no DMA for output"
-	help
-	  Do not use DMA for ser1 output.
-
-config ETRAX_SERIAL_PORT1_DMA8_OUT
-	depends on ETRAX_ARCH_V10
-	bool "Ser1 uses DMA8 for output"
-
-config ETRAX_SERIAL_PORT1_DMA4_OUT
-	depends on ETRAX_ARCH_V32
-	bool "Ser1 uses DMA4 for output"
-	help
-	  Enables the DMA4 output channel for ser1 (ttyS1).
-	  If you do not enable DMA, an interrupt for each character will be
-	  used when transmitting data.
-	  Normally you want this on, unless you use the DMA channel for
-	  something else.
-
-endchoice
-
-choice
-	prompt "Ser2 DMA out channel"
-	depends on ETRAX_SERIAL_PORT2
-	default ETRAX_SERIAL_PORT2_NO_DMA_OUT if ETRAX_ARCH_V32
-	default ETRAX_SERIAL_PORT2_DMA2_OUT if ETRAX_ARCH_V10
-
-config ETRAX_SERIAL_PORT2_NO_DMA_OUT
-	bool "Ser2 uses no DMA for output"
-	help
-	  Do not use DMA for ser2 output.
-
-config ETRAX_SERIAL_PORT2_DMA2_OUT
-	bool "Ser2 uses DMA2 for output"
-	depends on ETRAXFS || ETRAX_ARCH_V10
-	help
-	  Enables the DMA2 output channel for ser2 (ttyS2).
-	  If you do not enable DMA, an interrupt for each character will be
-	  used when transmitting data.
-	  Normally you want to use DMA, unless you use the DMA channel for
-	  something else.
-
-config ETRAX_SERIAL_PORT2_DMA6_OUT
-	bool "Ser2 uses DMA6 for output"
-	depends on CRIS_MACH_ARTPEC3
-	help
-	  Enables the DMA6 output channel for ser2 (ttyS2).
-	  If you do not enable DMA, an interrupt for each character will be
-	  used when transmitting data.
-	  Normally you want to use DMA, unless you use the DMA channel for
-	  something else.
-
-endchoice
-
-choice
-	prompt "Ser2 DMA in channel"
-	depends on ETRAX_SERIAL_PORT2
-	default ETRAX_SERIAL_PORT2_NO_DMA_IN if ETRAX_ARCH_V32
-	default ETRAX_SERIAL_PORT2_DMA3_IN if ETRAX_ARCH_V10
-	help
-	  What DMA channel to use for ser2.
-
-config ETRAX_SERIAL_PORT2_NO_DMA_IN
-	bool "Ser2 uses no DMA for input"
-	help
-	  Do not use DMA for ser2 input.
-
-config ETRAX_SERIAL_PORT2_DMA3_IN
-	bool "Ser2 uses DMA3 for input"
-	depends on ETRAXFS || ETRAX_ARCH_V10
-	help
-	  Enables the DMA3 input channel for ser2 (ttyS2).
-	  If you do not enable DMA, an interrupt for each character will be
-	  used when receiving data.
-	  Normally you want to use DMA, unless you use the DMA channel for
-	  something else.
-
-config ETRAX_SERIAL_PORT2_DMA7_IN
-	bool "Ser2 uses DMA7 for input"
-	depends on CRIS_MACH_ARTPEC3
-	help
-	  Enables the DMA7 input channel for ser2 (ttyS2).
-	  If you do not enable DMA, an interrupt for each character will be
-	  used when receiving data.
-	  Normally you want to use DMA, unless you use the DMA channel for
-	  something else.
-
-endchoice
-
-choice
-	prompt "Ser3 DMA in channel"
-	depends on ETRAX_SERIAL_PORT3
-	default ETRAX_SERIAL_PORT3_NO_DMA_IN if ETRAX_ARCH_V32
-	default ETRAX_SERIAL_PORT3_DMA5_IN if ETRAX_ARCH_V10
-	help
-	  What DMA channel to use for ser3.
-
-config ETRAX_SERIAL_PORT3_NO_DMA_IN
-	bool "Ser3 uses no DMA for input"
-	help
-	  Do not use DMA for ser3 input.
-
-config ETRAX_SERIAL_PORT3_DMA5_IN
-	depends on ETRAX_ARCH_V10
-	bool "DMA 5"
-
-endchoice
-
-choice
-	prompt "Ser3 DMA out channel"
-	depends on ETRAX_SERIAL_PORT3
-	default ETRAX_SERIAL_PORT3_NO_DMA_OUT if ETRAX_ARCH_V32
-	default ETRAX_SERIAL_PORT3_DMA4_OUT if ETRAX_ARCH_V10
-
-config ETRAX_SERIAL_PORT3_NO_DMA_OUT
-	bool "Ser3 uses no DMA for output"
-	help
-	  Do not use DMA for ser3 output.
-
-config ETRAX_SERIAL_PORT3_DMA4_OUT
-	depends on ETRAX_ARCH_V10
-	bool "DMA 4"
-
-endchoice
-
-endmenu
-
-source "drivers/Kconfig"
-
-source "fs/Kconfig"
-
-source "arch/cris/Kconfig.debug"
-
-source "security/Kconfig"
-
-source "crypto/Kconfig"
-
-source "lib/Kconfig"

arch/cris/Kconfig.debug

-# SPDX-License-Identifier: GPL-2.0
-menu "Kernel hacking"
-
-config PROFILING
-	bool "Kernel profiling support"
-
-config SYSTEM_PROFILER
-	bool "System profiling support"
-
-source "lib/Kconfig.debug"
-
-config ETRAX_KGDB
-	bool "Use kernel GDB debugger"
-	depends on DEBUG_KERNEL
-	---help---
-	  The CRIS version of gdb can be used to remotely debug a running
-	  Linux kernel via the serial debug port.  Provided you have gdb-cris
-	  installed, run gdb-cris vmlinux, then type
-
-	  (gdb) set remotebaud 115200           <- kgdb uses 115200 as default
-	  (gdb) target remote /dev/ttyS0        <- maybe you use another port
-
-	  This should connect you to your booted kernel (or boot it now if you
-	  didn't before).  The kernel halts when it boots, waiting for gdb if
-	  this option is turned on!
-
-
-config DEBUG_NMI_OOPS
-	bool "NMI causes oops printout"
-	depends on DEBUG_KERNEL
-	help
-	  If the system locks up without any debug information you can say Y
-	  here to make it possible to dump an OOPS with an external NMI.
-
-config NO_SEGFAULT_TERMINATION
-	bool "Keep segfaulting processes"
-	help
-	  Place segfaulting user mode processes on a wait queue instead of
-	  delivering a terminating SIGSEGV to allow debugging with gdb.
-
-endmenu

arch/cris/Makefile

-#
-# cris/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" and "archdep" for cleaning up and making dependencies 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.
-
-KBUILD_DEFCONFIG := etrax-100lx_v2_defconfig
-
-arch-y := v10
-arch-$(CONFIG_ETRAX_ARCH_V10) := v10
-arch-$(CONFIG_ETRAX_ARCH_V32) := v32
-
-# No config available for make clean etc
-mach-y := fs
-mach-$(CONFIG_CRIS_MACH_ARTPEC3) := a3
-mach-$(CONFIG_ETRAXFS) := fs
-
-ifneq ($(arch-y),)
-SARCH := arch-$(arch-y)
-inc := -Iarch/cris/include/uapi/$(SARCH)
-inc += -Iarch/cris/include/$(SARCH)
-inc += -Iarch/cris/include/uapi/$(SARCH)/arch
-inc += -Iarch/cris/include/$(SARCH)/arch
-else
-SARCH :=
-inc :=
-endif
-
-ifneq ($(mach-y),)
-MACH := mach-$(mach-y)
-inc += -Iarch/cris/include/$(SARCH)/$(MACH)/
-inc += -Iarch/cris/include/$(SARCH)/$(MACH)/mach
-else
-MACH :=
-endif
-
-ifneq ($(CONFIG_BUILTIN_DTB),"")
-core-$(CONFIG_OF) += arch/cris/boot/dts/
-endif
-
-LD = $(CROSS_COMPILE)ld -mcrislinux
-
-OBJCOPYFLAGS := -O binary -R .note -R .comment -S
-
-KBUILD_AFLAGS += -mlinux -march=$(arch-y) $(inc)
-KBUILD_CFLAGS += -mlinux -march=$(arch-y) -pipe $(inc)
-KBUILD_CPPFLAGS += $(inc)
-
-ifdef CONFIG_FRAME_POINTER
-KBUILD_CFLAGS := $(subst -fomit-frame-pointer,,$(KBUILD_CFLAGS)) -g
-KBUILD_CFLAGS += -fno-omit-frame-pointer
-endif
-
-head-y := arch/cris/$(SARCH)/kernel/head.o
-
-LIBGCC = $(shell $(CC) $(KBUILD_CFLAGS) -print-file-name=libgcc.a)
-
-core-y		+= arch/cris/kernel/ arch/cris/mm/
-core-y		+= arch/cris/$(SARCH)/kernel/ arch/cris/$(SARCH)/mm/
-ifdef CONFIG_ETRAX_ARCH_V32
-core-y		+= arch/cris/$(SARCH)/$(MACH)/
-endif
-drivers-y	+= arch/cris/$(SARCH)/drivers/
-libs-y		+= arch/cris/$(SARCH)/lib/ $(LIBGCC)
-
-# cris source path
-SRC_ARCH              = $(srctree)/arch/cris
-# cris object files path
-OBJ_ARCH              = $(objtree)/arch/cris
-
-boot := arch/cris/boot
-MACHINE := arch/cris/$(SARCH)
-
-all: zImage
-
-zImage Image: vmlinux
-	$(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/$@
-
-archprepare:
-
-archclean:
-	$(Q)if [ -e arch/cris/boot ]; then \
-		$(MAKE) $(clean)=arch/cris/boot; \
-	fi
-
-CLEAN_FILES += \
-	$(boot)/zImage \
-	$(boot)/compressed/decompress.bin \
-	$(boot)/compressed/piggy.gz \
-	$(boot)/rescue/rescue.bin
-
-
-# MRPROPER_FILES +=
-
-define archhelp
-  echo  '* zImage        - Compressed kernel image (arch/cris/boot/zImage)'
-  echo  '* Image         - Uncompressed kernel image (arch/cris/boot/Image)'
-endef

arch/cris/arch-v10/Kconfig

-# SPDX-License-Identifier: GPL-2.0
-if ETRAX_ARCH_V10
-
-menu "CRIS v10 options"
-
-# ETRAX 100LX v1 has a MMU "feature" requiring a low mapping
-config CRIS_LOW_MAP
-	bool
-	depends on ETRAX_ARCH_V10 && ETRAX100LX
-	default y
-
-config ETRAX_DRAM_VIRTUAL_BASE
-	hex
-	depends on ETRAX_ARCH_V10
-	default "c0000000" if !ETRAX100LX
-	default "60000000" if ETRAX100LX
-
-choice
-	prompt "Product LED port"
-	depends on ETRAX_ARCH_V10
-	default ETRAX_PA_LEDS
-
-config ETRAX_PA_LEDS
-	bool "Port-PA-LEDs"
-	help
-	  The ETRAX network driver is responsible for flashing LED's when
-	  packets arrive and are sent.  It uses macros defined in
-	  <file:arch/cris/include/asm/io.h>, and those macros are defined after
-	  what YOU choose in this option.  The actual bits used are configured
-	  separately.  Select this if the LEDs are on port PA.  Some products
-	  put the leds on PB or a memory-mapped latch (CSP0) instead.
-
-config ETRAX_PB_LEDS
-	bool "Port-PB-LEDs"
-	help
-	  The ETRAX network driver is responsible for flashing LED's when
-	  packets arrive and are sent.  It uses macros defined in
-	  <file:arch/cris/include/asm/io.h>, and those macros are defined after
-	  what YOU choose in this option.  The actual bits used are configured
-	  separately.  Select this if the LEDs are on port PB.  Some products
-	  put the leds on PA or a memory-mapped latch (CSP0) instead.
-
-config ETRAX_CSP0_LEDS
-	bool "Port-CSP0-LEDs"
-	help
-	  The ETRAX network driver is responsible for flashing LED's when
-	  packets arrive and are sent. It uses macros defined in
-	  <file:arch/cris/include/asm/io.h>, and those macros are defined after
-	  what YOU choose in this option.  The actual bits used are configured
-	  separately.  Select this if the LEDs are on a memory-mapped latch
-	  using chip select CSP0, this is mapped at 0x90000000.
-	  Some products put the leds on PA or PB instead.
-
-config ETRAX_NO_LEDS
-	bool "None"
-	help
-	  Select this option if you don't have any LED at all.
-
-endchoice
-
-config ETRAX_LED1G
-	int "First green LED bit"
-	depends on ETRAX_ARCH_V10 && !ETRAX_NO_LEDS
-	default "2"
-	help
-	  Bit to use for the first green LED.
-	  Most Axis products use bit 2 here.
-
-config ETRAX_LED1R
-	int "First red LED bit"
-	depends on ETRAX_ARCH_V10 && !ETRAX_NO_LEDS
-	default "3"
-	help
-	  Bit to use for the first red LED.
-	  Most Axis products use bit 3 here.
-	  For products with only one controllable LED,
-	  set this to same as CONFIG_ETRAX_LED1G (normally 2).
-
-config ETRAX_LED2G
-	int "Second green LED bit"
-	depends on ETRAX_ARCH_V10 && !ETRAX_NO_LEDS
-	default "4"
-	help
-	  Bit to use for the second green LED. The "Active" LED.
-	  Most Axis products use bit 4 here.
-	  For products with only one controllable LED,
-	  set this to same as CONFIG_ETRAX_LED1G (normally 2).
-
-config ETRAX_LED2R
-	int "Second red LED bit"
-	depends on ETRAX_ARCH_V10 && !ETRAX_NO_LEDS
-	default "5"
-	help
-	  Bit to use for the second red LED.
-	  Most Axis products use bit 5 here.
-	  For products with only one controllable LED,
-	  set this to same as CONFIG_ETRAX_LED1G (normally 2).
-
-config ETRAX_LED3G
-	int "Third green LED bit"
-	depends on ETRAX_ARCH_V10 && !ETRAX_NO_LEDS
-	default "2"
-	help
-	  Bit to use for the third green LED. The "Drive" LED.
-	  For products with only one or two controllable LEDs,
-	  set this to same as CONFIG_ETRAX_LED1G (normally 2).
-
-config ETRAX_LED3R
-	int "Third red LED bit"
-	depends on ETRAX_ARCH_V10 && !ETRAX_NO_LEDS
-	default "2"
-	help
-	  Bit to use for the third red LED.
-	  For products with only one or two controllable LEDs,
-	  set this to same as CONFIG_ETRAX_LED1G (normally 2).
-
-config ETRAX_LED4R
-	int "Fourth red LED bit"
-	depends on ETRAX_CSP0_LEDS
-	default "2"
-	help
-	  Bit to use for the fourth red LED.
-	  For products with only one or two controllable LEDs,
-	  set this to same as CONFIG_ETRAX_LED1G (normally 2).
-
-config ETRAX_LED4G
-	int "Fourth green LED bit"
-	depends on ETRAX_CSP0_LEDS
-	default "2"
-	help
-	  Bit to use for the fourth green LED.
-	  For products with only one or two controllable LEDs,
-	  set this to same as CONFIG_ETRAX_LED1G (normally 2).
-
-config ETRAX_LED5R
-	int "Fifth red LED bit"
-	depends on ETRAX_CSP0_LEDS
-	default "2"
-	help
-	  Bit to use for the fifth red LED.
-	  For products with only one or two controllable LEDs,
-	  set this to same as CONFIG_ETRAX_LED1G (normally 2).
-
-config ETRAX_LED5G
-	int "Fifth green LED bit"
-	depends on ETRAX_CSP0_LEDS
-	default "2"
-	help
-	  Bit to use for the fifth green LED.
-	  For products with only one or two controllable LEDs,
-	  set this to same as CONFIG_ETRAX_LED1G (normally 2).
-
-config ETRAX_LED6R
-	int "Sixth red LED bit"
-	depends on ETRAX_CSP0_LEDS
-	default "2"
-	help
-	  Bit to use for the sixth red LED.
-	  For products with only one or two controllable LEDs,
-	  set this to same as CONFIG_ETRAX_LED1G (normally 2).
-
-config ETRAX_LED6G
-	int "Sixth green LED bit"
-	depends on ETRAX_CSP0_LEDS
-	default "2"
-	help
-	  Bit to use for the sixth green LED. The "Drive" LED.
-	  For products with only one or two controllable LEDs,
-	  set this to same as CONFIG_ETRAX_LED1G (normally 2).
-
-config ETRAX_LED7R
-	int "Seventh red LED bit"
-	depends on ETRAX_CSP0_LEDS
-	default "2"
-	help
-	  Bit to use for the seventh red LED.
-	  For products with only one or two controllable LEDs,
-	  set this to same as CONFIG_ETRAX_LED1G (normally 2).
-
-config ETRAX_LED7G
-	int "Seventh green LED bit"
-	depends on ETRAX_CSP0_LEDS
-	default "2"
-	help
-	  Bit to use for the seventh green LED.
-	  For products with only one or two controllable LEDs,
-	  set this to same as CONFIG_ETRAX_LED1G (normally 2).
-
-config ETRAX_LED8Y
-	int "Eighth yellow LED bit"
-	depends on ETRAX_CSP0_LEDS
-	default "2"
-	help
-	  Bit to use for the eighth yellow LED. The "Drive" LED.
-	  For products with only one or two controllable LEDs,
-	  set this to same as CONFIG_ETRAX_LED1G (normally 2).
-
-config ETRAX_LED9Y
-	int "Ninth yellow LED bit"
-	depends on ETRAX_CSP0_LEDS
-	default "2"
-	help
-	  Bit to use for the ninth yellow LED.
-	  For products with only one or two controllable LEDs,
-	  set this to same as CONFIG_ETRAX_LED1G (normally 2).
-
-config ETRAX_LED10Y
-	int "Tenth yellow LED bit"
-	depends on ETRAX_CSP0_LEDS
-	default "2"
-	help
-	  Bit to use for the tenth yellow LED.
-	  For products with only one or two controllable LEDs,
-	  set this to same as CONFIG_ETRAX_LED1G (normally 2).
-
-config ETRAX_LED11Y
-	int "Eleventh yellow LED bit"
-	depends on ETRAX_CSP0_LEDS
-	default "2"
-	help
-	  Bit to use for the eleventh yellow LED.
-	  For products with only one or two controllable LEDs,
-	  set this to same as CONFIG_ETRAX_LED1G (normally 2).
-
-config ETRAX_LED12R
-	int "Twelfth red LED bit"
-	depends on ETRAX_CSP0_LEDS
-	default "2"
-	help
-	  Bit to use for the twelfth red LED.
-	  For products with only one or two controllable LEDs,
-	  set this to same as CONFIG_ETRAX_LED1G (normally 2).
-
-
-choice
-	prompt "Product rescue-port"
-	depends on ETRAX_ARCH_V10
-	default ETRAX_RESCUE_SER0
-
-config ETRAX_RESCUE_SER0
-	bool "Serial-0"
-	help
-	  Select one of the four serial ports as a rescue port.  The default
-	  is port 0.
-
-config ETRAX_RESCUE_SER1
-	bool "Serial-1"
-	help
-	  Use serial port 1 as the rescue port.
-
-config ETRAX_RESCUE_SER2
-	bool "Serial-2"
-	help
-	  Use serial port 2 as the rescue port.
-
-config ETRAX_RESCUE_SER3
-	bool "Serial-3"
-	help
-	  Use serial port 3 as the rescue port.
-
-endchoice
-
-config ETRAX_DEF_R_WAITSTATES
-	hex "R_WAITSTATES"
-	depends on ETRAX_ARCH_V10
-	default "95a6"
-	help
-	  Waitstates for SRAM, Flash and peripherals (not DRAM).  95f8 is a
-	  good choice for most Axis products...
-
-config ETRAX_DEF_R_BUS_CONFIG
-	hex "R_BUS_CONFIG"
-	depends on ETRAX_ARCH_V10
-	default "104"
-	help
-	  Assorted bits controlling write mode, DMA burst length etc.  104 is
-	  a good choice for most Axis products...
-
-config ETRAX_SDRAM
-	bool "SDRAM support"
-	depends on ETRAX_ARCH_V10
-	help
-	  Enable this if you use SDRAM chips and configure
-	  R_SDRAM_CONFIG and R_SDRAM_TIMING as well.
-
-config ETRAX_DEF_R_DRAM_CONFIG
-	hex "R_DRAM_CONFIG"
-	depends on ETRAX_ARCH_V10 && !ETRAX_SDRAM
-	default "1a200040"
-	help
-	  The R_DRAM_CONFIG register specifies everything on how the DRAM
-	  chips in the system are connected to the ETRAX CPU.  This is
-	  different depending on the manufacturer, chip type and number of
-	  chips.  So this value often needs to be different for each Axis
-	  product.
-
-config ETRAX_DEF_R_DRAM_TIMING
-	hex "R_DRAM_TIMING"
-	depends on ETRAX_ARCH_V10 && !ETRAX_SDRAM
-	default "5611"
-	help
-	  Different DRAM chips have different speeds.  Current Axis products
-	  use 50ns DRAM chips which can use the timing: 5611.
-
-config ETRAX_DEF_R_SDRAM_CONFIG
-	hex "R_SDRAM_CONFIG"
-	depends on ETRAX_ARCH_V10 && ETRAX_SDRAM
-	default "d2fa7878"
-	help
-	  The R_SDRAM_CONFIG register specifies everything on how the SDRAM
-	  chips in the system are connected to the ETRAX CPU.  This is
-	  different depending on the manufacturer, chip type and number of
-	  chips.  So this value often needs to be different for each Axis
-	  product.
-
-config ETRAX_DEF_R_SDRAM_TIMING
-	hex "R_SDRAM_TIMING"
-	depends on ETRAX_ARCH_V10 && ETRAX_SDRAM
-	default "80004801"
-	help
-	  Different SDRAM chips have different timing.
-
-config ETRAX_DEF_R_PORT_PA_DIR
-	hex "R_PORT_PA_DIR"
-	depends on ETRAX_ARCH_V10
-	default "1c"
-	help
-	  Configures the direction of general port A bits.  1 is out, 0 is in.
-	  This is often totally different depending on the product used.
-	  There are some guidelines though - if you know that only LED's are
-	  connected to port PA, then they are usually connected to bits 2-4
-	  and you can therefore use 1c.  On other boards which don't have the
-	  LED's at the general ports, these bits are used for all kinds of
-	  stuff.  If you don't know what to use, it is always safe to put all
-	  as inputs, although floating inputs isn't good.
-
-config ETRAX_DEF_R_PORT_PA_DATA
-	hex "R_PORT_PA_DATA"
-	depends on ETRAX_ARCH_V10
-	default "00"
-	help
-	  Configures the initial data for the general port A bits.  Most
-	  products should use 00 here.
-
-config ETRAX_DEF_R_PORT_PB_CONFIG
-	hex "R_PORT_PB_CONFIG"
-	depends on ETRAX_ARCH_V10
-	default "00"
-	help
-	  Configures the type of the general port B bits.  1 is chip select,
-	  0 is port.  Most products should use 00 here.
-
-config ETRAX_DEF_R_PORT_PB_DIR
-	hex "R_PORT_PB_DIR"
-	depends on ETRAX_ARCH_V10
-	default "00"
-	help
-	  Configures the direction of general port B bits. 1 is out, 0 is in.
-	  This is often totally different depending on the product used.  Bits
-	  0 and 1 on port PB are usually used for I2C communication, but the
-	  kernel I2C driver sets the appropriate directions itself so you
-	  don't need to take that into consideration when setting this option.
-	  If you don't know what to use, it is always safe to put all as
-	  inputs.
-
-config ETRAX_DEF_R_PORT_PB_DATA
-	hex "R_PORT_PB_DATA"
-	depends on ETRAX_ARCH_V10
-	default "ff"
-	help
-	  Configures the initial data for the general port A bits.  Most
-	  products should use FF here.
-
-config ETRAX_SOFT_SHUTDOWN
-	bool "Software Shutdown Support"
-	depends on ETRAX_ARCH_V10
-	help
-	  Enable this if ETRAX is used with a power-supply that can be turned
-	  off and on with PS_ON signal. Gives the possibility to detect
-	  powerbutton and then do a power off after unmounting disks.
-
-config ETRAX_SHUTDOWN_BIT
-	int "Shutdown bit on port CSP0"
-	depends on ETRAX_SOFT_SHUTDOWN
-	default "12"
-	help
-	  Configure what pin on CSPO-port that is used for controlling power
-	  supply.
-
-config ETRAX_POWERBUTTON_BIT
-	int "Power button bit on port G"
-	depends on ETRAX_SOFT_SHUTDOWN
-	default "25"
-	help
-	  Configure where power button is connected.
-
-endmenu
-
-endif

arch/cris/arch-v10/README.mm

-Memory management for CRIS/MMU
-------------------------------
-HISTORY:
-
-$Log: README.mm,v $
-Revision 1.1  2001/12/17 13:59:27  bjornw
-Initial revision
-
-Revision 1.1  2000/07/10 16:25:21  bjornw
-Initial revision
-
-Revision 1.4  2000/01/17 02:31:59  bjornw
-Added discussion of paging and VM.
-
-Revision 1.3  1999/12/03 16:43:23  hp
-Blurb about that the 3.5G-limitation is not a MMU limitation
-
-Revision 1.2  1999/12/03 16:04:21  hp
-Picky comment about not mapping the first page
-
-Revision 1.1  1999/12/03 15:41:30  bjornw
-First version of CRIS/MMU memory layout specification.
-
-
-
-
-
-------------------------------
-
-See the ETRAX-NG HSDD for reference.
-
-We use the page-size of 8 kbytes, as opposed to the i386 page-size of 4 kbytes.
-
-The MMU can, apart from the normal mapping of pages, also do a top-level
-segmentation of the kernel memory space. We use this feature to avoid having
-to use page-tables to map the physical memory into the kernel's address
-space. We also use it to keep the user-mode virtual mapping in the same
-map during kernel-mode, so that the kernel easily can access the corresponding
-user-mode process' data.
-
-As a comparison, the Linux/i386 2.0 puts the kernel and physical RAM at
-address 0, overlapping with the user-mode virtual space, so that descriptor
-registers are needed for each memory access to specify which MMU space to
-map through. That changed in 2.2, putting the kernel/physical RAM at 
-0xc0000000, to co-exist with the user-mode mapping. We will do something
-quite similar, but with the additional complexity of having to map the
-internal chip I/O registers and the flash memory area (including SRAM
-and peripherial chip-selets).
-
-The kernel-mode segmentation map:
-
-        ------------------------                ------------------------
-FFFFFFFF|                      | => cached      |                      | 
-        |    kernel seg_f      |    flash       |                      |
-F0000000|______________________|                |                      |
-EFFFFFFF|                      | => uncached    |                      | 
-        |    kernel seg_e      |    flash       |                      |
-E0000000|______________________|                |        DRAM          |
-DFFFFFFF|                      |  paged to any  |      Un-cached       | 
-        |    kernel seg_d      |    =======>    |                      |
-D0000000|______________________|                |                      |
-CFFFFFFF|                      |                |                      | 
-        |    kernel seg_c      |==\             |                      |
-C0000000|______________________|   \            |______________________|
-BFFFFFFF|                      |  uncached      |                      |
-        |    kernel seg_b      |=====\=========>|       Registers      |
-B0000000|______________________|      \c        |______________________|
-AFFFFFFF|                      |       \a       |                      |
-        |                      |        \c      | FLASH/SRAM/Peripheral|
-        |                      |         \h     |______________________|
-        |                      |          \e    |                      |
-        |                      |           \d   |                      |
-        | kernel seg_0 - seg_a |            \==>|         DRAM         | 
-        |                      |                |        Cached        |
-        |                      |  paged to any  |                      |
-        |                      |    =======>    |______________________| 
-        |                      |                |                      |
-        |                      |                |        Illegal       |
-        |                      |                |______________________|
-        |                      |                |                      |      
-        |                      |                | FLASH/SRAM/Peripheral|
-00000000|______________________|                |______________________|
-
-In user-mode it looks the same except that only the space 0-AFFFFFFF is
-available. Therefore, in this model, the virtual address space per process
-is limited to 0xb0000000 bytes (minus 8192 bytes, since the first page,
-0..8191, is never mapped, in order to trap NULL references).
-
-It also means that the total physical RAM that can be mapped is 256 MB
-(kseg_c above). More RAM can be mapped by choosing a different segmentation
-and shrinking the user-mode memory space.
-
-The MMU can map all 4 GB in user mode, but doing that would mean that a
-few extra instructions would be needed for each access to user mode
-memory.
-
-The kernel needs access to both cached and uncached flash. Uncached is
-necessary because of the special write/erase sequences. Also, the 
-peripherial chip-selects are decoded from that region.
-
-The kernel also needs its own virtual memory space. That is kseg_d. It
-is used by the vmalloc() kernel function to allocate virtual contiguous
-chunks of memory not possible using the normal kmalloc physical RAM 
-allocator.
-
-The setting of the actual MMU control registers to use this layout would
-be something like this:
-
-R_MMU_KSEG = ( ( seg_f, seg     ) |   // Flash cached
-               ( seg_e, seg     ) |   // Flash uncached
-               ( seg_d, page    ) |   // kernel vmalloc area    
-               ( seg_c, seg     ) |   // kernel linear segment
-               ( seg_b, seg     ) |   // kernel linear segment
-               ( seg_a, page    ) |
-               ( seg_9, page    ) |
-               ( seg_8, page    ) |
-               ( seg_7, page    ) |
-               ( seg_6, page    ) |
-               ( seg_5, page    ) |
-               ( seg_4, page    ) |
-               ( seg_3, page    ) |
-               ( seg_2, page    ) |
-               ( seg_1, page    ) |
-               ( seg_0, page    ) );
-
-R_MMU_KBASE_HI = ( ( base_f, 0x0 ) |   // flash/sram/periph cached
-                   ( base_e, 0x8 ) |   // flash/sram/periph uncached
-                   ( base_d, 0x0 ) |   // don't care
-                   ( base_c, 0x4 ) |   // physical RAM cached area
-                   ( base_b, 0xb ) |   // uncached on-chip registers
-                   ( base_a, 0x0 ) |   // don't care
-                   ( base_9, 0x0 ) |   // don't care
-                   ( base_8, 0x0 ) );  // don't care
-
-R_MMU_KBASE_LO = ( ( base_7, 0x0 ) |   // don't care
-                   ( base_6, 0x0 ) |   // don't care
-                   ( base_5, 0x0 ) |   // don't care
-                   ( base_4, 0x0 ) |   // don't care
-                   ( base_3, 0x0 ) |   // don't care
-                   ( base_2, 0x0 ) |   // don't care
-                   ( base_1, 0x0 ) |   // don't care
-                   ( base_0, 0x0 ) );  // don't care
-
-NOTE: while setting up the MMU, we run in a non-mapped mode in the DRAM (0x40
-segment) and need to setup the seg_4 to a unity mapping, so that we don't get
-a fault before we have had time to jump into the real kernel segment (0xc0). This
-is done in head.S temporarily, but fixed by the kernel later in paging_init.
-
-
-Paging - PTE's, PMD's and PGD's
--------------------------------
-
-[ References: asm/pgtable.h, asm/page.h, asm/mmu.h ]
-
-The paging mechanism uses virtual addresses to split a process memory-space into
-pages, a page being the smallest unit that can be freely remapped in memory. On
-Linux/CRIS, a page is 8192 bytes (for technical reasons not equal to 4096 as in 
-most other 32-bit architectures). It would be inefficient to let a virtual memory
-mapping be controlled by a long table of page mappings, so it is broken down into
-a 2-level structure with a Page Directory containing pointers to Page Tables which
-each have maps of up to 2048 pages (8192 / sizeof(void *)). Linux can actually
-handle 3-level structures as well, with a Page Middle Directory in between, but
-in many cases, this is folded into a two-level structure by excluding the Middle
-Directory.
-
-We'll take a look at how an address is translated while we discuss how it's handled
-in the Linux kernel.
-
-The example address is 0xd004000c; in binary this is:
-
-31       23       15       7      0
-11010000 00000100 00000000 00001100
-
-|______| |__________||____________|
-  PGD        PTE       page offset
-
-Given the top-level Page Directory, the offset in that directory is calculated
-using the upper 8 bits:
-
-static inline pgd_t * pgd_offset(struct mm_struct * mm, unsigned long address)
-{
-	return mm->pgd + (address >> PGDIR_SHIFT);
-}
-
-PGDIR_SHIFT is the log2 of the amount of memory an entry in the PGD can map; in our
-case it is 24, corresponding to 16 MB. This means that each entry in the PGD 
-corresponds to 16 MB of virtual memory.
-
-The pgd_t from our example will therefore be the 208'th (0xd0) entry in mm->pgd.
-
-Since the Middle Directory does not exist, it is a unity mapping:
-
-static inline pmd_t * pmd_offset(pgd_t * dir, unsigned long address)
-{
-	return (pmd_t *) dir;
-}
-
-The Page Table provides the final lookup by using bits 13 to 23 as index:
-
-static inline pte_t * pte_offset(pmd_t * dir, unsigned long address)
-{
-	return (pte_t *) pmd_page(*dir) + ((address >> PAGE_SHIFT) &
-					   (PTRS_PER_PTE - 1));
-}
-
-PAGE_SHIFT is the log2 of the size of a page; 13 in our case. PTRS_PER_PTE is
-the number of pointers that fit in a Page Table and is used to mask off the 
-PGD-part of the address.
-
-The so-far unused bits 0 to 12 are used to index inside a page linearily.
-
-The VM system
--------------
-
-The kernels own page-directory is the swapper_pg_dir, cleared in paging_init, 
-and contains the kernels virtual mappings (the kernel itself is not paged - it
-is mapped linearily using kseg_c as described above). Architectures without
-kernel segments like the i386, need to setup swapper_pg_dir directly in head.S
-to map the kernel itself. swapper_pg_dir is pointed to by init_mm.pgd as the
-init-task's PGD.
-
-To see what support functions are used to setup a page-table, let's look at the
-kernel's internal paged memory system, vmalloc/vfree.
-
-void * vmalloc(unsigned long size)
-
-The vmalloc-system keeps a paged segment in kernel-space at 0xd0000000. What
-happens first is that a virtual address chunk is allocated to the request using
-get_vm_area(size). After that, physical RAM pages are allocated and put into
-the kernel's page-table using alloc_area_pages(addr, size). 
-
-static int alloc_area_pages(unsigned long address, unsigned long size)
-
-First the PGD entry is found using init_mm.pgd. This is passed to
-alloc_area_pmd (remember the 3->2 folding). It uses pte_alloc_kernel to
-check if the PGD entry points anywhere - if not, a page table page is
-allocated and the PGD entry updated. Then the alloc_area_pte function is
-used just like alloc_area_pmd to check which page table entry is desired, 
-and a physical page is allocated and the table entry updated. All of this
-is repeated at the top-level until the entire address range specified has 
-been mapped.
-
-
-

arch/cris/arch-v10/drivers/Makefile

-# SPDX-License-Identifier: GPL-2.0
-#
-# Makefile for Etrax-specific drivers
-#
-
-obj-$(CONFIG_ETRAX_AXISFLASHMAP)	+= axisflashmap.o
-obj-$(CONFIG_ETRAX_I2C)			+= i2c.o
-obj-$(CONFIG_ETRAX_I2C_EEPROM)		+= eeprom.o
-obj-$(CONFIG_ETRAX_GPIO)		+= gpio.o
-obj-$(CONFIG_ETRAX_SYNCHRONOUS_SERIAL)	+= sync_serial.o
-

arch/cris/arch-v10/drivers/axisflashmap.c

-/*
- * Physical mapping layer for MTD using the Axis partitiontable format
- *
- * Copyright (c) 2001, 2002 Axis Communications AB
- *
- * This file is under the GPL.
- *
- * First partition is always sector 0 regardless of if we find a partitiontable
- * or not. In the start of the next sector, there can be a partitiontable that
- * tells us what other partitions to define. If there isn't, we use a default
- * partition split defined below.
- *
- */
-
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/slab.h>
-
-#include <linux/mtd/concat.h>
-#include <linux/mtd/map.h>
-#include <linux/mtd/mtd.h>
-#include <linux/mtd/mtdram.h>
-#include <linux/mtd/partitions.h>
-
-#include <asm/axisflashmap.h>
-#include <asm/mmu.h>
-#include <arch/sv_addr_ag.h>
-
-#ifdef CONFIG_CRIS_LOW_MAP
-#define FLASH_UNCACHED_ADDR  KSEG_8
-#define FLASH_CACHED_ADDR    KSEG_5
-#else
-#define FLASH_UNCACHED_ADDR  KSEG_E
-#define FLASH_CACHED_ADDR    KSEG_F
-#endif
-
-#if CONFIG_ETRAX_FLASH_BUSWIDTH==1
-#define flash_data __u8
-#elif CONFIG_ETRAX_FLASH_BUSWIDTH==2
-#define flash_data __u16
-#elif CONFIG_ETRAX_FLASH_BUSWIDTH==4
-#define flash_data __u32
-#endif
-
-/* From head.S */
-extern unsigned long romfs_start, romfs_length, romfs_in_flash;
-
-/* The master mtd for the entire flash. */
-struct mtd_info* axisflash_mtd = NULL;
-
-/* Map driver functions. */
-
-static map_word flash_read(struct map_info *map, unsigned long ofs)
-{
-	map_word tmp;
-	tmp.x[0] = *(flash_data *)(map->map_priv_1 + ofs);
-	return tmp;
-}
-
-static void flash_copy_from(struct map_info *map, void *to,
-			    unsigned long from, ssize_t len)
-{
-	memcpy(to, (void *)(map->map_priv_1 + from), len);
-}
-
-static void flash_write(struct map_info *map, map_word d, unsigned long adr)
-{
-	*(flash_data *)(map->map_priv_1 + adr) = (flash_data)d.x[0];
-}
-
-/*
- * The map for chip select e0.
- *
- * We run into tricky coherence situations if we mix cached with uncached
- * accesses to we only use the uncached version here.
- *
- * The size field is the total size where the flash chips may be mapped on the
- * chip select. MTD probes should find all devices there and it does not matter
- * if there are unmapped gaps or aliases (mirrors of flash devices). The MTD
- * probes will ignore them.
- *
- * The start address in map_priv_1 is in virtual memory so we cannot use
- * MEM_CSE0_START but must rely on that FLASH_UNCACHED_ADDR is the start
- * address of cse0.
- */
-static struct map_info map_cse0 = {
-	.name = "cse0",
-	.size = MEM_CSE0_SIZE,
-	.bankwidth = CONFIG_ETRAX_FLASH_BUSWIDTH,
-	.read = flash_read,
-	.copy_from = flash_copy_from,
-	.write = flash_write,
-	.map_priv_1 = FLASH_UNCACHED_ADDR
-};
-
-/*
- * The map for chip select e1.
- *
- * If there was a gap between cse0 and cse1, map_priv_1 would get the wrong
- * address, but there isn't.
- */
-static struct map_info map_cse1 = {
-	.name = "cse1",
-	.size = MEM_CSE1_SIZE,
-	.bankwidth = CONFIG_ETRAX_FLASH_BUSWIDTH,
-	.read = flash_read,
-	.copy_from = flash_copy_from,
-	.write = flash_write,
-	.map_priv_1 = FLASH_UNCACHED_ADDR + MEM_CSE0_SIZE
-};
-
-/* If no partition-table was found, we use this default-set. */
-#define MAX_PARTITIONS         7
-#define NUM_DEFAULT_PARTITIONS 3
-
-/*
- * Default flash size is 2MB. CONFIG_ETRAX_PTABLE_SECTOR is most likely the
- * size of one flash block and "filesystem"-partition needs 5 blocks to be able
- * to use JFFS.
- */
-static struct mtd_partition axis_default_partitions[NUM_DEFAULT_PARTITIONS] = {
-	{
-		.name = "boot firmware",
-		.size = CONFIG_ETRAX_PTABLE_SECTOR,
-		.offset = 0
-	},
-	{
-		.name = "kernel",
-		.size = 0x200000 - (6 * CONFIG_ETRAX_PTABLE_SECTOR),
-		.offset = CONFIG_ETRAX_PTABLE_SECTOR
-	},
-	{
-		.name = "filesystem",
-		.size = 5 * CONFIG_ETRAX_PTABLE_SECTOR,
-		.offset = 0x200000 - (5 * CONFIG_ETRAX_PTABLE_SECTOR)
-	}
-};
-
-/* Initialize the ones normally used. */
-static struct mtd_partition axis_partitions[MAX_PARTITIONS] = {
-	{
-		.name = "part0",
-		.size = CONFIG_ETRAX_PTABLE_SECTOR,
-		.offset = 0
-	},
-	{
-		.name = "part1",
-		.size = 0,
-		.offset = 0
-	},
-	{
-		.name = "part2",
-		.size = 0,
-		.offset = 0
-	},
-	{
-		.name = "part3",
-		.size = 0,
-		.offset = 0
-	},
-	{
-		.name = "part4",
-		.size = 0,
-		.offset = 0
-	},
-	{
-		.name = "part5",
-		.size = 0,
-		.offset = 0
-	},
-	{
-		.name = "part6",
-		.size = 0,
-		.offset = 0
-	},
-};
-
-/*
- * Probe a chip select for AMD-compatible (JEDEC) or CFI-compatible flash
- * chips in that order (because the amd_flash-driver is faster).
- */
-static struct mtd_info *probe_cs(struct map_info *map_cs)
-{
-	struct mtd_info *mtd_cs = NULL;
-
-	printk(KERN_INFO
-               "%s: Probing a 0x%08lx bytes large window at 0x%08lx.\n",
-	       map_cs->name, map_cs->size, map_cs->map_priv_1);
-
-#ifdef CONFIG_MTD_CFI
-	mtd_cs = do_map_probe("cfi_probe", map_cs);
-#endif
-#ifdef CONFIG_MTD_JEDECPROBE
-	if (!mtd_cs)
-		mtd_cs = do_map_probe("jedec_probe", map_cs);
-#endif
-
-	return mtd_cs;
-}
-
-/*
- * Probe each chip select individually for flash chips. If there are chips on
- * both cse0 and cse1, the mtd_info structs will be concatenated to one struct
- * so that MTD partitions can cross chip boundaries.
- *
- * The only known restriction to how you can mount your chips is that each
- * chip select must hold similar flash chips. But you need external hardware
- * to do that anyway and you can put totally different chips on cse0 and cse1
- * so it isn't really much of a restriction.
- */
-static struct mtd_info *flash_probe(void)
-{
-	struct mtd_info *mtd_cse0;
-	struct mtd_info *mtd_cse1;
-	struct mtd_info *mtd_cse;
-
-	mtd_cse0 = probe_cs(&map_cse0);
-	mtd_cse1 = probe_cs(&map_cse1);
-
-	if (!mtd_cse0 && !mtd_cse1) {
-		/* No chip found. */
-		return NULL;
-	}
-
-	if (mtd_cse0 && mtd_cse1) {
-		struct mtd_info *mtds[] = { mtd_cse0, mtd_cse1 };
-
-		/* Since the concatenation layer adds a small overhead we
-		 * could try to figure out if the chips in cse0 and cse1 are
-		 * identical and reprobe the whole cse0+cse1 window. But since
-		 * flash chips are slow, the overhead is relatively small.
-		 * So we use the MTD concatenation layer instead of further
-		 * complicating the probing procedure.
-		 */
-		mtd_cse = mtd_concat_create(mtds, ARRAY_SIZE(mtds),
-					    "cse0+cse1");
-		if (!mtd_cse) {
-			printk(KERN_ERR "%s and %s: Concatenation failed!\n",
-			       map_cse0.name, map_cse1.name);
-
-			/* The best we can do now is to only use what we found
-			 * at cse0.
-			 */
-			mtd_cse = mtd_cse0;
-			map_destroy(mtd_cse1);
-		}
-	} else {
-		mtd_cse = mtd_cse0? mtd_cse0 : mtd_cse1;
-	}
-
-	return mtd_cse;
-}
-
-/*
- * Probe the flash chip(s) and, if it succeeds, read the partition-table
- * and register the partitions with MTD.
- */
-static int __init init_axis_flash(void)
-{
-	struct mtd_info *mymtd;
-	int err = 0;
-	int pidx = 0;
-	struct partitiontable_head *ptable_head = NULL;
-	struct partitiontable_entry *ptable;
-	int use_default_ptable = 1; /* Until proven otherwise. */
-	const char pmsg[] = "  /dev/flash%d at 0x%08x, size 0x%08x\n";
-
-	if (!(mymtd = flash_probe())) {
-		/* There's no reason to use this module if no flash chip can
-		 * be identified. Make sure that's understood.
-		 */
-		printk(KERN_INFO "axisflashmap: Found no flash chip.\n");
-	} else {
-		printk(KERN_INFO "%s: 0x%08x bytes of flash memory.\n",
-		       mymtd->name, mymtd->size);
-		axisflash_mtd = mymtd;
-	}
-
-	if (mymtd) {
-		mymtd->owner = THIS_MODULE;
-		ptable_head = (struct partitiontable_head *)(FLASH_CACHED_ADDR +
-			      CONFIG_ETRAX_PTABLE_SECTOR +
-			      PARTITION_TABLE_OFFSET);
-	}
-	pidx++;  /* First partition is always set to the default. */
-
-	if (ptable_head && (ptable_head->magic == PARTITION_TABLE_MAGIC)
-	    && (ptable_head->size <
-		(MAX_PARTITIONS * sizeof(struct partitiontable_entry) +
-		PARTITIONTABLE_END_MARKER_SIZE))
-	    && (*(unsigned long*)((void*)ptable_head + sizeof(*ptable_head) +
-				  ptable_head->size -
-				  PARTITIONTABLE_END_MARKER_SIZE)
-		== PARTITIONTABLE_END_MARKER)) {
-		/* Looks like a start, sane length and end of a
-		 * partition table, lets check csum etc.
-		 */
-		int ptable_ok = 0;
-		struct partitiontable_entry *max_addr =
-			(struct partitiontable_entry *)
-			((unsigned long)ptable_head + sizeof(*ptable_head) +
-			 ptable_head->size);
-		unsigned long offset = CONFIG_ETRAX_PTABLE_SECTOR;
-		unsigned char *p;
-		unsigned long csum = 0;
-
-		ptable = (struct partitiontable_entry *)
-			((unsigned long)ptable_head + sizeof(*ptable_head));
-
-		/* Lets be PARANOID, and check the checksum. */
-		p = (unsigned char*) ptable;
-
-		while (p <= (unsigned char*)max_addr) {
-			csum += *p++;
-			csum += *p++;
-			csum += *p++;
-			csum += *p++;
-		}
-		ptable_ok = (csum == ptable_head->checksum);
-
-		/* Read the entries and use/show the info.  */
-		printk(KERN_INFO " Found a%s partition table at 0x%p-0x%p.\n",
-		       (ptable_ok ? " valid" : "n invalid"), ptable_head,
-		       max_addr);
-
-		/* We have found a working bootblock.  Now read the
-		 * partition table.  Scan the table.  It ends when
-		 * there is 0xffffffff, that is, empty flash.
-		 */
-		while (ptable_ok
-		       && ptable->offset != 0xffffffff
-		       && ptable < max_addr
-		       && pidx < MAX_PARTITIONS) {
-
-			axis_partitions[pidx].offset = offset + ptable->offset;
-			axis_partitions[pidx].size = ptable->size;
-
-			printk(pmsg, pidx, axis_partitions[pidx].offset,
-			       axis_partitions[pidx].size);
-			pidx++;
-			ptable++;
-		}
-		use_default_ptable = !ptable_ok;
-	}
-
-	if (romfs_in_flash) {
-		/* Add an overlapping device for the root partition (romfs). */
-
-		axis_partitions[pidx].name = "romfs";
-		axis_partitions[pidx].size = romfs_length;
-		axis_partitions[pidx].offset = romfs_start - FLASH_CACHED_ADDR;
-		axis_partitions[pidx].mask_flags |= MTD_WRITEABLE;
-
-		printk(KERN_INFO
-                       " Adding readonly flash partition for romfs image:\n");
-		printk(pmsg, pidx, axis_partitions[pidx].offset,
-		       axis_partitions[pidx].size);
-		pidx++;
-	}
-
-        if (mymtd) {
-		if (use_default_ptable) {
-			printk(KERN_INFO " Using default partition table.\n");
-			err = mtd_device_register(mymtd,
-						  axis_default_partitions,
-						  NUM_DEFAULT_PARTITIONS);
-		} else {
-			err = mtd_device_register(mymtd, axis_partitions,
-						  pidx);
-		}
-
-		if (err)
-			panic("axisflashmap could not add MTD partitions!\n");
-	}
-
-	if (!romfs_in_flash) {
-		/* Create an RAM device for the root partition (romfs). */
-
-#if !defined(CONFIG_MTD_MTDRAM) || (CONFIG_MTDRAM_TOTAL_SIZE != 0)
-		/* No use trying to boot this kernel from RAM. Panic! */
-		printk(KERN_EMERG "axisflashmap: Cannot create an MTD RAM "
-		       "device due to kernel (mis)configuration!\n");
-		panic("This kernel cannot boot from RAM!\n");
-#else
-		struct mtd_info *mtd_ram;
-
-		mtd_ram = kmalloc(sizeof(struct mtd_info), GFP_KERNEL);
-		if (!mtd_ram)
-			panic("axisflashmap couldn't allocate memory for "
-			      "mtd_info!\n");
-
-		printk(KERN_INFO " Adding RAM partition for romfs image:\n");
-		printk(pmsg, pidx, (unsigned)romfs_start,
-			(unsigned)romfs_length);
-
-		err = mtdram_init_device(mtd_ram,
-			(void *)romfs_start,
-			romfs_length,
-			"romfs");
-		if (err)
-			panic("axisflashmap could not initialize MTD RAM "
-			      "device!\n");
-#endif
-	}
-	return err;
-}
-
-/* This adds the above to the kernels init-call chain. */
-module_init(init_axis_flash);
-
-EXPORT_SYMBOL(axisflash_mtd);

arch/cris/arch-v10/drivers/i2c.h

-/* SPDX-License-Identifier: GPL-2.0 */
-/* i2c.h */
-int i2c_init(void);
-
-/* High level I2C actions */
-int i2c_writereg(unsigned char theSlave, unsigned char theReg, unsigned char theValue);
-unsigned char i2c_readreg(unsigned char theSlave, unsigned char theReg);
-
-/* Low level I2C */
-void i2c_start(void);
-void i2c_stop(void);
-void i2c_outbyte(unsigned char x);
-unsigned char i2c_inbyte(void);
-int i2c_getack(void);
-void i2c_sendack(void);
-
-
-

arch/cris/arch-v10/kernel/Makefile

-# SPDX-License-Identifier: GPL-2.0
-#
-# Makefile for the linux kernel.
-#
-
-extra-y	:= head.o
-
-
-obj-y   := entry.o traps.o shadows.o debugport.o irq.o \
-	   process.o setup.o signal.o traps.o time.o ptrace.o \
-	   dma.o io_interface_mux.o
-
-obj-$(CONFIG_ETRAX_KGDB) += kgdb.o
-obj-$(CONFIG_ETRAX_FAST_TIMER) += fasttimer.o
-obj-$(CONFIG_MODULES)    += crisksyms.o
-
-clean:
-

arch/cris/arch-v10/kernel/crisksyms.c

-// SPDX-License-Identifier: GPL-2.0
-#include <linux/module.h>
-#include <asm/io.h>
-#include <arch/svinto.h>
-
-/* Export shadow registers for the CPU I/O pins */
-EXPORT_SYMBOL(genconfig_shadow);
-EXPORT_SYMBOL(port_pa_data_shadow);
-EXPORT_SYMBOL(port_pa_dir_shadow);
-EXPORT_SYMBOL(port_pb_data_shadow);
-EXPORT_SYMBOL(port_pb_dir_shadow);
-EXPORT_SYMBOL(port_pb_config_shadow);
-EXPORT_SYMBOL(port_g_data_shadow);
-
-/* Cache flush functions */
-EXPORT_SYMBOL(flush_etrax_cache);
-EXPORT_SYMBOL(prepare_rx_descriptor);

arch/cris/arch-v10/kernel/debugport.c

-// SPDX-License-Identifier: GPL-2.0
-/* Serialport functions for debugging
- *
- * Copyright (c) 2000-2007 Axis Communications AB
- *
- * Authors:  Bjorn Wesen
- *
- * Exports:
- *    console_print_etrax(char *buf)
- *    int getDebugChar()
- *    putDebugChar(int)
- *    enableDebugIRQ()
- *    init_etrax_debug()
- *
- */
-
-#include <linux/console.h>
-#include <linux/init.h>
-#include <linux/major.h>
-#include <linux/delay.h>
-#include <linux/tty.h>
-#include <arch/svinto.h>
-
-extern void reset_watchdog(void);
-
-struct dbg_port
-{
-  unsigned int index;
-  const volatile unsigned* read;
-  volatile char* write;
-  volatile unsigned* xoff;
-  volatile char* baud;
-  volatile char* tr_ctrl;
-  volatile char* rec_ctrl;
-  unsigned long irq;
-  unsigned int started;
-  unsigned long baudrate;
-  unsigned char parity;
-  unsigned int bits;
-};
-
-struct dbg_port ports[]=
-{
-  {
-    0,
-    R_SERIAL0_READ,
-    R_SERIAL0_TR_DATA,
-    R_SERIAL0_XOFF,
-    R_SERIAL0_BAUD,
-    R_SERIAL0_TR_CTRL,
-    R_SERIAL0_REC_CTRL,
-    IO_STATE(R_IRQ_MASK1_SET, ser0_data, set),
-    0,
-    115200,
-    'N',
-    8
-  },
-  {
-    1,
-    R_SERIAL1_READ,
-    R_SERIAL1_TR_DATA,
-    R_SERIAL1_XOFF,
-    R_SERIAL1_BAUD,
-    R_SERIAL1_TR_CTRL,
-    R_SERIAL1_REC_CTRL,
-    IO_STATE(R_IRQ_MASK1_SET, ser1_data, set),
-    0,
-    115200,
-    'N',
-    8
-  },
-  {
-    2,
-    R_SERIAL2_READ,
-    R_SERIAL2_TR_DATA,
-    R_SERIAL2_XOFF,
-    R_SERIAL2_BAUD,
-    R_SERIAL2_TR_CTRL,
-    R_SERIAL2_REC_CTRL,
-    IO_STATE(R_IRQ_MASK1_SET, ser2_data, set),
-    0,
-    115200,
-    'N',
-    8
-  },
-  {
-    3,
-    R_SERIAL3_READ,
-    R_SERIAL3_TR_DATA,
-    R_SERIAL3_XOFF,
-    R_SERIAL3_BAUD,
-    R_SERIAL3_TR_CTRL,
-    R_SERIAL3_REC_CTRL,
-    IO_STATE(R_IRQ_MASK1_SET, ser3_data, set),
-    0,
-    115200,
-    'N',
-    8
-  }
-};
-
-#ifdef CONFIG_ETRAX_SERIAL
-extern struct tty_driver *serial_driver;
-#endif
-
-struct dbg_port* port =
-#if defined(CONFIG_ETRAX_DEBUG_PORT0)
-  &ports[0];
-#elif defined(CONFIG_ETRAX_DEBUG_PORT1)
-  &ports[1];
-#elif defined(CONFIG_ETRAX_DEBUG_PORT2)
-  &ports[2];
-#elif defined(CONFIG_ETRAX_DEBUG_PORT3)
-  &ports[3];
-#else
-  NULL;
-#endif
-
-static struct dbg_port* kgdb_port =
-#if defined(CONFIG_ETRAX_KGDB_PORT0)
-  &ports[0];
-#elif defined(CONFIG_ETRAX_KGDB_PORT1)
-  &ports[1];
-#elif defined(CONFIG_ETRAX_KGDB_PORT2)
-  &ports[2];
-#elif defined(CONFIG_ETRAX_KGDB_PORT3)
-  &ports[3];
-#else
-  NULL;
-#endif
-
-static void
-start_port(struct dbg_port* p)
-{
-	unsigned long rec_ctrl = 0;
-	unsigned long tr_ctrl = 0;
-
-	if (!p)
-		return;
-
-	if (p->started)
-		return;
-	p->started = 1;
-
-	if (p->index == 0)
-	{
-		genconfig_shadow &= ~IO_MASK(R_GEN_CONFIG, dma6);
-		genconfig_shadow |= IO_STATE(R_GEN_CONFIG, dma6, unused);
-	}
-	else if (p->index == 1)
-	{
-		genconfig_shadow &= ~IO_MASK(R_GEN_CONFIG, dma8);
-		genconfig_shadow |= IO_STATE(R_GEN_CONFIG, dma8, usb);
-	}
-	else if (p->index == 2)
-	{
-		genconfig_shadow &= ~IO_MASK(R_GEN_CONFIG, dma2);
-		genconfig_shadow |= IO_STATE(R_GEN_CONFIG, dma2, par0);
-		genconfig_shadow &= ~IO_MASK(R_GEN_CONFIG, dma3);
-		genconfig_shadow |= IO_STATE(R_GEN_CONFIG, dma3, par0);
-		genconfig_shadow |= IO_STATE(R_GEN_CONFIG, ser2, select);
-	}
-	else
-	{
-		genconfig_shadow &= ~IO_MASK(R_GEN_CONFIG, dma4);
-		genconfig_shadow |= IO_STATE(R_GEN_CONFIG, dma4, par1);
-		genconfig_shadow &= ~IO_MASK(R_GEN_CONFIG, dma5);
-		genconfig_shadow |= IO_STATE(R_GEN_CONFIG, dma5, par1);
-		genconfig_shadow |= IO_STATE(R_GEN_CONFIG, ser3, select);
-	}
-
-	*R_GEN_CONFIG = genconfig_shadow;
-
-	*p->xoff =
-		IO_STATE(R_SERIAL0_XOFF, tx_stop, enable) |
-		IO_STATE(R_SERIAL0_XOFF, auto_xoff, disable) |
-		IO_FIELD(R_SERIAL0_XOFF, xoff_char, 0);
-
-	switch (p->baudrate)
-	{
-	case 0:
-	case 115200:
-		*p->baud =
-		  IO_STATE(R_SERIAL0_BAUD, tr_baud, c115k2Hz) |
-		  IO_STATE(R_SERIAL0_BAUD, rec_baud, c115k2Hz);
-		break;
-	case 1200:
-		*p->baud =
-		  IO_STATE(R_SERIAL0_BAUD, tr_baud, c1200Hz) |
-		  IO_STATE(R_SERIAL0_BAUD, rec_baud, c1200Hz);
-		break;
-	case 2400:
-		*p->baud =
-		  IO_STATE(R_SERIAL0_BAUD, tr_baud, c2400Hz) |
-		  IO_STATE(R_SERIAL0_BAUD, rec_baud, c2400Hz);
-		break;
-	case 4800:
-		*p->baud =
-		  IO_STATE(R_SERIAL0_BAUD, tr_baud, c4800Hz) |
-		  IO_STATE(R_SERIAL0_BAUD, rec_baud, c4800Hz);
-		break;
-	case 9600:
-		*p->baud =
-		  IO_STATE(R_SERIAL0_BAUD, tr_baud, c9600Hz) |
-		  IO_STATE(R_SERIAL0_BAUD, rec_baud, c9600Hz);
-		  break;
-	case 19200:
-		*p->baud =
-		  IO_STATE(R_SERIAL0_BAUD, tr_baud, c19k2Hz) |
-		  IO_STATE(R_SERIAL0_BAUD, rec_baud, c19k2Hz);
-		 break;
-	case 38400:
-		*p->baud =
-		  IO_STATE(R_SERIAL0_BAUD, tr_baud, c38k4Hz) |
-		  IO_STATE(R_SERIAL0_BAUD, rec_baud, c38k4Hz);
-		break;
-	case 57600:
-		*p->baud =
-		  IO_STATE(R_SERIAL0_BAUD, tr_baud, c57k6Hz) |
-		  IO_STATE(R_SERIAL0_BAUD, rec_baud, c57k6Hz);
-		break;
-	default:
-		*p->baud =
-		  IO_STATE(R_SERIAL0_BAUD, tr_baud, c115k2Hz) |
-		  IO_STATE(R_SERIAL0_BAUD, rec_baud, c115k2Hz);
-		  break;
-        }
-
-	if (p->parity == 'E') {
-		rec_ctrl =
-		  IO_STATE(R_SERIAL0_REC_CTRL, rec_par, even) |
-		  IO_STATE(R_SERIAL0_REC_CTRL, rec_par_en, enable);
-		tr_ctrl =
-		  IO_STATE(R_SERIAL0_TR_CTRL, tr_par, even) |
-		  IO_STATE(R_SERIAL0_TR_CTRL, tr_par_en, enable);
-	} else if (p->parity == 'O') {
-		rec_ctrl =
-		  IO_STATE(R_SERIAL0_REC_CTRL, rec_par, odd) |
-		  IO_STATE(R_SERIAL0_REC_CTRL, rec_par_en, enable);
-		tr_ctrl =
-		  IO_STATE(R_SERIAL0_TR_CTRL, tr_par, odd) |
-		  IO_STATE(R_SERIAL0_TR_CTRL, tr_par_en, enable);
-	} else {
-		rec_ctrl =
-		  IO_STATE(R_SERIAL0_REC_CTRL, rec_par, even) |
-		  IO_STATE(R_SERIAL0_REC_CTRL, rec_par_en, disable);
-		tr_ctrl =
-		  IO_STATE(R_SERIAL0_TR_CTRL, tr_par, even) |
-		  IO_STATE(R_SERIAL0_TR_CTRL, tr_par_en, disable);
-	}
-	if (p->bits == 7)
-	{
-		rec_ctrl |= IO_STATE(R_SERIAL0_REC_CTRL, rec_bitnr, rec_7bit);
-		tr_ctrl |= IO_STATE(R_SERIAL0_TR_CTRL, tr_bitnr, tr_7bit);
-	}
-	else
-	{
-		rec_ctrl |= IO_STATE(R_SERIAL0_REC_CTRL, rec_bitnr, rec_8bit);
-		tr_ctrl |= IO_STATE(R_SERIAL0_TR_CTRL, tr_bitnr, tr_8bit);
-	}
-
-	*p->rec_ctrl =
-		IO_STATE(R_SERIAL0_REC_CTRL, dma_err, stop) |
-		IO_STATE(R_SERIAL0_REC_CTRL, rec_enable, enable) |
-		IO_STATE(R_SERIAL0_REC_CTRL, rts_, active) |
-		IO_STATE(R_SERIAL0_REC_CTRL, sampling, middle) |
-		IO_STATE(R_SERIAL0_REC_CTRL, rec_stick_par, normal) |
-		rec_ctrl;
-
-	*p->tr_ctrl =
-		IO_FIELD(R_SERIAL0_TR_CTRL, txd, 0) |
-		IO_STATE(R_SERIAL0_TR_CTRL, tr_enable, enable) |
-		IO_STATE(R_SERIAL0_TR_CTRL, auto_cts, disabled) |
-		IO_STATE(R_SERIAL0_TR_CTRL, stop_bits, one_bit) |
-		IO_STATE(R_SERIAL0_TR_CTRL, tr_stick_par, normal) |
-		tr_ctrl;
-}
-
-static void
-console_write_direct(struct console *co, const char *buf, unsigned int len)
-{
-	int i;
-	unsigned long flags;
-
-        if (!port)
-		return;
-
-	local_irq_save(flags);
-
-	/* Send data */
-	for (i = 0; i < len; i++) {
-		/* LF -> CRLF */
-		if (buf[i] == '\n') {
-			while (!(*port->read & IO_MASK(R_SERIAL0_READ, tr_ready)))
-			;
-			*port->write = '\r';
-		}
-		/* Wait until transmitter is ready and send.*/
-		while (!(*port->read & IO_MASK(R_SERIAL0_READ, tr_ready)))
-			;
-		*port->write = buf[i];
-	}
-
-	/*
-	 * Feed the watchdog, otherwise it will reset the chip during boot.
-	 * The time to send an ordinary boot message line (10-90 chars)
-	 * varies between 1-8ms at 115200. What makes up for the additional
-	 * 90ms that allows the watchdog to bite?
-	*/
-	reset_watchdog();
-
-	local_irq_restore(flags);
-}
-
-static void
-console_write(struct console *co, const char *buf, unsigned int len)
-{
-	if (!port)
-		return;
-
-        console_write_direct(co, buf, len);
-}
-
-/* legacy function */
-
-void
-console_print_etrax(const char *buf)
-{
-	console_write(NULL, buf, strlen(buf));
-}
-
-/* Use polling to get a single character FROM the debug port */
-
-int
-getDebugChar(void)
-{
-	unsigned long readval;
-
-	if (!kgdb_port)
-		return 0;
-
-	do {
-		readval = *kgdb_port->read;
-	} while (!(readval & IO_MASK(R_SERIAL0_READ, data_avail)));
-
-	return (readval & IO_MASK(R_SERIAL0_READ, data_in));
-}
-
-/* Use polling to put a single character to the debug port */
-
-void
-putDebugChar(int val)
-{
-	if (!kgdb_port)
-		return;
-
-	while (!(*kgdb_port->read & IO_MASK(R_SERIAL0_READ, tr_ready)))
-		;
-	*kgdb_port->write = val;
-}
-
-/* Enable irq for receiving chars on the debug port, used by kgdb */
-
-void
-enableDebugIRQ(void)
-{
-	if (!kgdb_port)
-		return;
-
-	*R_IRQ_MASK1_SET = kgdb_port->irq;
-	/* use R_VECT_MASK directly, since we really bypass Linux normal
-	 * IRQ handling in kgdb anyway, we don't need to use enable_irq
-	 */
-	*R_VECT_MASK_SET = IO_STATE(R_VECT_MASK_SET, serial, set);
-
-	*kgdb_port->rec_ctrl = IO_STATE(R_SERIAL0_REC_CTRL, rec_enable, enable);
-}
-
-static int __init
-console_setup(struct console *co, char *options)
-{
-	char* s;
-
-	if (options) {
-		port = &ports[co->index];
-		port->baudrate = 115200;
-                port->parity = 'N';
-                port->bits = 8;
-		port->baudrate = simple_strtoul(options, NULL, 10);
-		s = options;
-		while(*s >= '0' && *s <= '9')
-			s++;
-		if (*s) port->parity = *s++;
-		if (*s) port->bits   = *s++ - '0';
-		port->started = 0;
-		start_port(0);
-	}
-	return 0;
-}
-
-
-/* This is a dummy serial device that throws away anything written to it.
- * This is used when no debug output is wanted.
- */
-static struct tty_driver dummy_driver;
-
-static int dummy_open(struct tty_struct *tty, struct file * filp)
-{
-	return 0;
-}
-
-static void dummy_close(struct tty_struct *tty, struct file * filp)
-{
-}
-
-static int dummy_write(struct tty_struct * tty,
-                       const unsigned char *buf, int count)
-{
-	return count;
-}
-
-static int dummy_write_room(struct tty_struct *tty)
-{
-	return 8192;
-}
-
-static const struct tty_operations dummy_ops = {
-	.open = dummy_open,
-	.close = dummy_close,
-	.write = dummy_write,
-	.write_room = dummy_write_room,
-};
-
-void __init
-init_dummy_console(void)
-{
-	memset(&dummy_driver, 0, sizeof(struct tty_driver));
-	dummy_driver.driver_name = "serial";
-	dummy_driver.name = "ttyS";
-	dummy_driver.major = TTY_MAJOR;
-	dummy_driver.minor_start = 68;
-	dummy_driver.num = 1;       /* etrax100 has 4 serial ports */
-	dummy_driver.type = TTY_DRIVER_TYPE_SERIAL;
-	dummy_driver.subtype = SERIAL_TYPE_NORMAL;
-	dummy_driver.init_termios = tty_std_termios;
-	/* Normally B9600 default... */
-	dummy_driver.init_termios.c_cflag =
-		B115200 | CS8 | CREAD | HUPCL | CLOCAL;
-	dummy_driver.flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
-	dummy_driver.init_termios.c_ispeed = 115200;
-	dummy_driver.init_termios.c_ospeed = 115200;
-
-	dummy_driver.ops = &dummy_ops;
-	if (tty_register_driver(&dummy_driver))
-		panic("Couldn't register dummy serial driver\n");
-}
-
-static struct tty_driver*
-etrax_console_device(struct console* co, int *index)
-{
-	if (port)
-		*index = port->index;
-	else
-		*index = 0;
-#ifdef CONFIG_ETRAX_SERIAL
-        return port ? serial_driver : &dummy_driver;
-#else
-	return &dummy_driver;
-#endif
-}
-
-static struct console ser_console = {
-	name : "ttyS",
-	write: console_write,
-	read : NULL,
-	device : etrax_console_device,
-	unblank : NULL,
-	setup : console_setup,
-	flags : CON_PRINTBUFFER,
-	index : -1,
-	cflag : 0,
-	next : NULL
-};
-static struct console ser0_console = {
-	name : "ttyS",
-	write: console_write,
-	read : NULL,
-	device : etrax_console_device,
-	unblank : NULL,
-	setup : console_setup,
-	flags : CON_PRINTBUFFER,
-	index : 0,
-	cflag : 0,
-	next : NULL
-};
-
-static struct console ser1_console = {
-	name : "ttyS",
-	write: console_write,
-	read : NULL,
-	device : etrax_console_device,
-	unblank : NULL,
-	setup : console_setup,
-	flags : CON_PRINTBUFFER,
-	index : 1,
-	cflag : 0,
-	next : NULL
-};
-static struct console ser2_console = {
-	name : "ttyS",
-	write: console_write,
-	read : NULL,
-	device : etrax_console_device,
-	unblank : NULL,
-	setup : console_setup,
-	flags : CON_PRINTBUFFER,
-	index : 2,
-	cflag : 0,
-	next : NULL
-};
-static struct console ser3_console = {
-	name : "ttyS",
-	write: console_write,
-	read : NULL,
-	device : etrax_console_device,
-	unblank : NULL,
-	setup : console_setup,
-	flags : CON_PRINTBUFFER,
-	index : 3,
-	cflag : 0,
-	next : NULL
-};
-/*
- *      Register console (for printk's etc)
- */
-
-int __init
-init_etrax_debug(void)
-{
-	static int first = 1;
-
-	if (!first) {
-		unregister_console(&ser_console);
-		register_console(&ser0_console);
-		register_console(&ser1_console);
-		register_console(&ser2_console);
-		register_console(&ser3_console);
-                init_dummy_console();
-		return 0;
-	}
-
-	first = 0;
-	register_console(&ser_console);
-	start_port(port);
-#ifdef CONFIG_ETRAX_KGDB
-	start_port(kgdb_port);
-#endif
-	return 0;
-}
-__initcall(init_etrax_debug);

arch/cris/arch-v10/kernel/shadows.c

-// SPDX-License-Identifier: GPL-2.0
-/*
- * Various shadow registers. Defines for these are in include/asm-etrax100/io.h
- */
-
-/* Shadows for internal Etrax-registers */
-
-unsigned long genconfig_shadow;
-unsigned long gen_config_ii_shadow;
-unsigned long port_g_data_shadow;
-unsigned char port_pa_dir_shadow;
-unsigned char port_pa_data_shadow;
-unsigned char port_pb_i2c_shadow;
-unsigned char port_pb_config_shadow;
-unsigned char port_pb_dir_shadow;
-unsigned char port_pb_data_shadow;
-unsigned long r_timer_ctrl_shadow;
-
-/* Shadows for external I/O port registers.
- * These are only usable if there actually IS a latch connected
- * to the corresponding external chip-select pin.
- *
- * A common usage is that CSP0 controls LEDs and CSP4 video chips.
- */
-
-unsigned long port_cse1_shadow;
-unsigned long port_csp0_shadow;
-unsigned long port_csp4_shadow;
-
-/* Corresponding addresses for the ports.
- * These are initialized in arch/cris/mm/init.c using ioremap.
- */
-
-volatile unsigned long *port_cse1_addr;
-volatile unsigned long *port_csp0_addr;
-volatile unsigned long *port_csp4_addr;
-

arch/cris/arch-v10/lib/Makefile

-#
-# Makefile for Etrax-specific library files..
-#
-
-lib-y  = checksum.o checksumcopy.o string.o usercopy.o memset.o csumcpfruser.o
-

arch/cris/arch-v10/mm/Makefile

-#
-# Makefile for the linux cris-specific parts of the memory manager.
-#
-
-obj-y	 := fault.o init.o tlb.o
-

arch/cris/arch-v10/output_arch.ld

-/* At the time of this writing, there's no equivalent ld option. */
-OUTPUT_ARCH (cris)