[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>
2006-09-26 06:32:13 +00:00
|
|
|
/*
|
|
|
|
|
* 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>
|
|
|
|
|
|
2008-02-24 22:19:22 +00:00
|
|
|
#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>
2006-09-26 06:32:13 +00:00
|
|
|
|
|
|
|
|
#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__ */
|