5f97f7f940
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>
59 lines
1.4 KiB
C
59 lines
1.4 KiB
C
/*
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* ATSTK1000 board-specific setup code.
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*
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* Copyright (C) 2005-2006 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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#include <linux/bootmem.h>
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#include <linux/init.h>
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#include <linux/types.h>
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#include <linux/linkage.h>
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#include <asm/setup.h>
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#include <asm/arch/board.h>
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/* Initialized by bootloader-specific startup code. */
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struct tag *bootloader_tags __initdata;
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struct lcdc_platform_data __initdata atstk1000_fb0_data;
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asmlinkage void __init board_early_init(void)
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{
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extern void sdram_init(void);
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#ifdef CONFIG_LOADER_STANDALONE
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sdram_init();
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#endif
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}
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void __init board_setup_fbmem(unsigned long fbmem_start,
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unsigned long fbmem_size)
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{
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if (!fbmem_size)
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return;
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if (!fbmem_start) {
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void *fbmem;
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fbmem = alloc_bootmem_low_pages(fbmem_size);
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fbmem_start = __pa(fbmem);
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} else {
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pg_data_t *pgdat;
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for_each_online_pgdat(pgdat) {
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if (fbmem_start >= pgdat->bdata->node_boot_start
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&& fbmem_start <= pgdat->bdata->node_low_pfn)
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reserve_bootmem_node(pgdat, fbmem_start,
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fbmem_size);
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}
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}
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printk("%luKiB framebuffer memory at address 0x%08lx\n",
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fbmem_size >> 10, fbmem_start);
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atstk1000_fb0_data.fbmem_start = fbmem_start;
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atstk1000_fb0_data.fbmem_size = fbmem_size;
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}
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