[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: Haavard Skinnemoen <hskinnemoen@atmel.com>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Dave McCracken <dmccr@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 84 insertions, 0 deletions

diff --git a/arch/avr32/Makefile b/arch/avr32/Makefile
new file mode 100644
index 000000000000..cefc95a73980
--- /dev/null
+++ b/arch/avr32/Makefile
@@ -0,0 +1,84 @@
+#
+# 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