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linux/arch/avr32/include/asm/asm.h

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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: 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>
2006-09-25 23:32:13 -07:00
/*
* Copyright (C) 2004-2006 Atmel Corporation
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef __ASM_AVR32_ASM_H__
#define __ASM_AVR32_ASM_H__
#include <asm/sysreg.h>
#include <asm/asm-offsets.h>
#include <asm/thread_info.h>
avr32: Use constants from sysreg.h in asm.h Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
2008-02-24 23:19:22 +01:00
#define mask_interrupts ssrf SYSREG_GM_OFFSET
#define mask_exceptions ssrf SYSREG_EM_OFFSET
#define unmask_interrupts csrf SYSREG_GM_OFFSET
#define unmask_exceptions csrf SYSREG_EM_OFFSET
[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>
2006-09-25 23:32:13 -07:00
#ifdef CONFIG_FRAME_POINTER
.macro save_fp
st.w --sp, r7
.endm
.macro restore_fp
ld.w r7, sp++
.endm
.macro zero_fp
mov r7, 0
.endm
#else
.macro save_fp
.endm
.macro restore_fp
.endm
.macro zero_fp
.endm
#endif
.macro get_thread_info reg
mov \reg, sp
andl \reg, ~(THREAD_SIZE - 1) & 0xffff
.endm
/* Save and restore registers */
.macro save_min sr, tmp=lr
pushm lr
mfsr \tmp, \sr
zero_fp
st.w --sp, \tmp
.endm
.macro restore_min sr, tmp=lr
ld.w \tmp, sp++
mtsr \sr, \tmp
popm lr
.endm
.macro save_half sr, tmp=lr
save_fp
pushm r8-r9,r10,r11,r12,lr
zero_fp
mfsr \tmp, \sr
st.w --sp, \tmp
.endm
.macro restore_half sr, tmp=lr
ld.w \tmp, sp++
mtsr \sr, \tmp
popm r8-r9,r10,r11,r12,lr
restore_fp
.endm
.macro save_full_user sr, tmp=lr
stmts --sp, r0,r1,r2,r3,r4,r5,r6,r7,r8,r9,r10,r11,r12,sp,lr
st.w --sp, lr
zero_fp
mfsr \tmp, \sr
st.w --sp, \tmp
.endm
.macro restore_full_user sr, tmp=lr
ld.w \tmp, sp++
mtsr \sr, \tmp
ld.w lr, sp++
ldmts sp++, r0,r1,r2,r3,r4,r5,r6,r7,r8,r9,r10,r11,r12,sp,lr
.endm
/* uaccess macros */
.macro branch_if_kernel scratch, label
get_thread_info \scratch
ld.w \scratch, \scratch[TI_flags]
bld \scratch, TIF_USERSPACE
brcc \label
.endm
.macro ret_if_privileged scratch, addr, size, ret
sub \scratch, \size, 1
add \scratch, \addr
retcs \ret
retmi \ret
.endm
#endif /* __ASM_AVR32_ASM_H__ */
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