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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>
66 lines
2.4 KiB
C
66 lines
2.4 KiB
C
/*
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* Copyright (C) 2004-2006 Atmel Corporation
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* Note: We may not need these definitions for AVR32, as we don't
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* support a.out.
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*/
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#ifndef __ASM_AVR32_USER_H
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#define __ASM_AVR32_USER_H
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#include <linux/types.h>
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#include <asm/ptrace.h>
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#include <asm/page.h>
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/*
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* Core file format: The core file is written in such a way that gdb
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* can understand it and provide useful information to the user (under
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* linux we use the `trad-core' bfd). The file contents are as follows:
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*
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* upage: 1 page consisting of a user struct that tells gdb
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* what is present in the file. Directly after this is a
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* copy of the task_struct, which is currently not used by gdb,
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* but it may come in handy at some point. All of the registers
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* are stored as part of the upage. The upage should always be
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* only one page long.
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* data: The data segment follows next. We use current->end_text to
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* current->brk to pick up all of the user variables, plus any memory
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* that may have been sbrk'ed. No attempt is made to determine if a
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* page is demand-zero or if a page is totally unused, we just cover
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* the entire range. All of the addresses are rounded in such a way
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* that an integral number of pages is written.
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* stack: We need the stack information in order to get a meaningful
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* backtrace. We need to write the data from usp to
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* current->start_stack, so we round each of these in order to be able
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* to write an integer number of pages.
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*/
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struct user_fpu_struct {
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/* We have no FPU (yet) */
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};
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struct user {
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struct pt_regs regs; /* entire machine state */
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size_t u_tsize; /* text size (pages) */
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size_t u_dsize; /* data size (pages) */
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size_t u_ssize; /* stack size (pages) */
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unsigned long start_code; /* text starting address */
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unsigned long start_data; /* data starting address */
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unsigned long start_stack; /* stack starting address */
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long int signal; /* signal causing core dump */
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struct regs * u_ar0; /* help gdb find registers */
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unsigned long magic; /* identifies a core file */
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char u_comm[32]; /* user command name */
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};
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#define NBPG PAGE_SIZE
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#define UPAGES 1
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#define HOST_TEXT_START_ADDR (u.start_code)
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#define HOST_DATA_START_ADDR (u.start_data)
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#define HOST_STACK_END_ADDR (u.start_stack + u.u_ssize * NBPG)
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#endif /* __ASM_AVR32_USER_H */
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