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Commit 5f97f7f9 authored by Haavard Skinnemoen's avatar Haavard Skinnemoen Committed by Linus Torvalds
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[PATCH] avr32 architecture 

This adds support for the Atmel AVR32 architecture as well as the AT32AP7000
CPU and the AT32STK1000 development board.

AVR32 is a new high-performance 32-bit RISC microprocessor core, designed for
cost-sensitive embedded applications, with particular emphasis on low power
consumption and high code density.  The AVR32 architecture is not binary
compatible with earlier 8-bit AVR architectures.

The AVR32 architecture, including the instruction set, is described by the
AVR32 Architecture Manual, available from

http://www.atmel.com/dyn/resources/prod_documents/doc32000.pdf

The Atmel AT32AP7000 is the first CPU implementing the AVR32 architecture.  It
features a 7-stage pipeline, 16KB instruction and data caches and a full
Memory Management Unit.  It also comes with a large set of integrated
peripherals, many of which are shared with the AT91 ARM-based controllers from
Atmel.

Full data sheet is available from

http://www.atmel.com/dyn/resources/prod_documents/doc32003.pdf

while the CPU core implementation including caches and MMU is documented by
the AVR32 AP Technical Reference, available from

http://www.atmel.com/dyn/resources/prod_documents/doc32001.pdf

Information about the AT32STK1000 development board can be found at

http://www.atmel.com/dyn/products/tools_card.asp?tool_id=3918

including a BSP CD image with an earlier version of this patch, development
tools (binaries and source/patches) and a root filesystem image suitable for
booting from SD card.

Alternatively, there's a preliminary "getting started" guide available at
http://avr32linux.org/twiki/bin/view/Main/GettingStarted

 which provides links
to the sources and patches you will need in order to set up a cross-compiling
environment for avr32-linux.

This patch, as well as the other patches included with the BSP and the
toolchain patches, is actively supported by Atmel Corporation.

[dmccr@us.ibm.com: Fix more pxx_page macro locations]
[bunk@stusta.de: fix `make defconfig']
Signed-off-by: default avatarHaavard Skinnemoen <hskinnemoen@atmel.com>
Signed-off-by: default avatarAdrian Bunk <bunk@stusta.de>
Signed-off-by: default avatarDave McCracken <dmccr@us.ibm.com>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 53e62d3a

MAINTAINERS

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@@ -443,6 +443,23 @@ W: http://people.redhat.com/sgrubb/audit/ 
T:	git kernel.org:/pub/scm/linux/kernel/git/dwmw2/audit-2.6.git

T:	git kernel.org:/pub/scm/linux/kernel/git/dwmw2/audit-2.6.git

S:	Maintained

S:	Maintained





AVR32 ARCHITECTURE

P:	Atmel AVR32 Support Team

M:	avr32@atmel.com

P:	Haavard Skinnemoen

M:	hskinnemoen@atmel.com

W:	http://www.atmel.com/products/AVR32/

W:	http://avr32linux.org/

W:	http://avrfreaks.net/

S:	Supported



AVR32/AT32AP MACHINE SUPPORT

P:	Atmel AVR32 Support Team

M:	avr32@atmel.com

P:	Haavard Skinnemoen

M:	hskinnemoen@atmel.com

S:	Supported



AX.25 NETWORK LAYER

AX.25 NETWORK LAYER

P:	Ralf Baechle

P:	Ralf Baechle

M:	ralf@linux-mips.org

M:	ralf@linux-mips.org

arch/avr32/Kconfig

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#

# For a description of the syntax of this configuration file,

# see Documentation/kbuild/kconfig-language.txt.

#



mainmenu "Linux Kernel Configuration"



config AVR32

	bool

	default y

	# With EMBEDDED=n, we get lots of stuff automatically selected

	# that we usually don't need on AVR32.

	select EMBEDDED

	help

	  AVR32 is a high-performance 32-bit RISC microprocessor core,

	  designed for cost-sensitive embedded applications, with particular

	  emphasis on low power consumption and high code density.



	  There is an AVR32 Linux project with a web page at

	  http://avr32linux.org/.



config UID16

	bool



config GENERIC_HARDIRQS

	bool

	default y



config HARDIRQS_SW_RESEND

	bool

	default y



config GENERIC_IRQ_PROBE

	bool

	default y



config RWSEM_GENERIC_SPINLOCK

	bool

	default y



config GENERIC_TIME

	bool

	default y



config RWSEM_XCHGADD_ALGORITHM

	bool



config GENERIC_BUST_SPINLOCK

	bool



config GENERIC_HWEIGHT

	bool

	default y



config GENERIC_CALIBRATE_DELAY

	bool

	default y



source "init/Kconfig"



menu "System Type and features"



config SUBARCH_AVR32B

	bool

config MMU

	bool

config PERFORMANCE_COUNTERS

	bool



config PLATFORM_AT32AP

	bool

	select SUBARCH_AVR32B

	select MMU

	select PERFORMANCE_COUNTERS



choice

	prompt "AVR32 CPU type"

	default CPU_AT32AP7000



config CPU_AT32AP7000

	bool "AT32AP7000"

	select PLATFORM_AT32AP

endchoice



#

# CPU Daughterboards for ATSTK1000

config BOARD_ATSTK1002

	bool



choice

	prompt "AVR32 board type"

	default BOARD_ATSTK1000



config BOARD_ATSTK1000

	bool "ATSTK1000 evaluation board"

	select BOARD_ATSTK1002 if CPU_AT32AP7000

endchoice



choice

	prompt "Boot loader type"

	default LOADER_U_BOOT



config	LOADER_U_BOOT

	bool "U-Boot (or similar) bootloader"

endchoice



config LOAD_ADDRESS

	hex

	default 0x10000000 if LOADER_U_BOOT=y && CPU_AT32AP7000=y



config ENTRY_ADDRESS

	hex

	default 0x90000000 if LOADER_U_BOOT=y && CPU_AT32AP7000=y



config PHYS_OFFSET

	hex

	default 0x10000000 if CPU_AT32AP7000=y



source "kernel/Kconfig.preempt"



config HAVE_ARCH_BOOTMEM_NODE

	bool

	default n



config ARCH_HAVE_MEMORY_PRESENT

	bool

	default n



config NEED_NODE_MEMMAP_SIZE

	bool

	default n



config ARCH_FLATMEM_ENABLE

	bool

	default y



config ARCH_DISCONTIGMEM_ENABLE

	bool

	default n



config ARCH_SPARSEMEM_ENABLE

	bool

	default n



source "mm/Kconfig"



config OWNERSHIP_TRACE

	bool "Ownership trace support"

	default y

	help

	  Say Y to generate an Ownership Trace message on every context switch,

	  enabling Nexus-compliant debuggers to keep track of the PID of the

	  currently executing task.



# FPU emulation goes here



source "kernel/Kconfig.hz"



config CMDLINE

	string "Default kernel command line"

	default ""

	help

	  If you don't have a boot loader capable of passing a command line string

	  to the kernel, you may specify one here. As a minimum, you should specify

	  the memory size and the root device (e.g., mem=8M, root=/dev/nfs).



endmenu



menu "Bus options"



config PCI

	bool



source "drivers/pci/Kconfig"



source "drivers/pcmcia/Kconfig"



endmenu



menu "Executable file formats"

source "fs/Kconfig.binfmt"

endmenu



source "net/Kconfig"



source "drivers/Kconfig"



source "fs/Kconfig"



source "arch/avr32/Kconfig.debug"



source "security/Kconfig"



source "crypto/Kconfig"



source "lib/Kconfig"

arch/avr32/Kconfig.debug

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menu "Kernel hacking"



config TRACE_IRQFLAGS_SUPPORT

	bool

	default y



source "lib/Kconfig.debug"



config KPROBES

	bool "Kprobes"

	depends on DEBUG_KERNEL

	help

	  Kprobes allows you to trap at almost any kernel address and

          execute a callback function.  register_kprobe() establishes

          a probepoint and specifies the callback.  Kprobes is useful

          for kernel debugging, non-intrusive instrumentation and testing.

          If in doubt, say "N".



endmenu

arch/avr32/Makefile

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#

# 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) 2004-2006 Atmel Corporation.



# Default target when executing plain make

.PHONY: all

all: uImage vmlinux.elf linux.lst



KBUILD_DEFCONFIG	:= atstk1002_defconfig



CFLAGS		+= -pipe -fno-builtin -mno-pic

AFLAGS		+= -mrelax -mno-pic

CFLAGS_MODULE	+= -mno-relax

LDFLAGS_vmlinux	+= --relax



cpuflags-$(CONFIG_CPU_AP7000)	+= -mcpu=ap7000



CFLAGS		+= $(cpuflags-y)

AFLAGS		+= $(cpuflags-y)



CHECKFLAGS	+= -D__avr32__



LIBGCC		:= $(shell $(CC) $(CFLAGS) -print-libgcc-file-name)



head-$(CONFIG_LOADER_U_BOOT)		+= arch/avr32/boot/u-boot/head.o

head-y					+= arch/avr32/kernel/head.o

core-$(CONFIG_PLATFORM_AT32AP)		+= arch/avr32/mach-at32ap/

core-$(CONFIG_BOARD_ATSTK1000)		+= arch/avr32/boards/atstk1000/

core-$(CONFIG_LOADER_U_BOOT)		+= arch/avr32/boot/u-boot/

core-y					+= arch/avr32/kernel/

core-y					+= arch/avr32/mm/

libs-y					+= arch/avr32/lib/ #$(LIBGCC)



archincdir-$(CONFIG_PLATFORM_AT32AP)	:= arch-at32ap



include/asm-avr32/.arch: $(wildcard include/config/platform/*.h) include/config/auto.conf

	@echo '  SYMLINK include/asm-avr32/arch -> include/asm-avr32/$(archincdir-y)'

ifneq ($(KBUILD_SRC),)

	$(Q)mkdir -p include/asm-avr32

	$(Q)ln -fsn $(srctree)/include/asm-avr32/$(archincdir-y) include/asm-avr32/arch

else

	$(Q)ln -fsn $(archincdir-y) include/asm-avr32/arch

endif

	@touch $@



archprepare: include/asm-avr32/.arch



BOOT_TARGETS := vmlinux.elf vmlinux.bin uImage uImage.srec



.PHONY: $(BOOT_TARGETS) install



boot := arch/$(ARCH)/boot/images



             KBUILD_IMAGE := $(boot)/uImage

vmlinux.elf: KBUILD_IMAGE := $(boot)/vmlinux.elf

vmlinux.cso: KBUILD_IMAGE := $(boot)/vmlinux.cso

uImage.srec: KBUILD_IMAGE := $(boot)/uImage.srec

uImage:      KBUILD_IMAGE := $(boot)/uImage



quiet_cmd_listing = LST     $@

      cmd_listing = avr32-linux-objdump $(OBJDUMPFLAGS) -lS $< > $@

quiet_cmd_disasm  = DIS     $@

      cmd_disasm  = avr32-linux-objdump $(OBJDUMPFLAGS) -d $< > $@



vmlinux.elf vmlinux.bin uImage.srec uImage vmlinux.cso: vmlinux

	$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@



install: vmlinux

	$(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) $@



linux.s: vmlinux

	$(call if_changed,disasm)



linux.lst: vmlinux

	$(call if_changed,listing)



define archhelp

  @echo '* vmlinux.elf		- ELF image with load address 0'

  @echo '  vmlinux.cso		- PathFinder CSO image'

  @echo '  uImage		- Create a bootable image for U-Boot'

endef

arch/avr32/boards/atstk1000/Makefile

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obj-y				+= setup.o spi.o

obj-$(CONFIG_BOARD_ATSTK1002)	+= atstk1002.o