diff options
author | Haavard Skinnemoen <hskinnemoen@atmel.com> | 2006-09-25 23:32:13 -0700 |
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committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-09-26 08:48:54 -0700 |
commit | 5f97f7f9400de47ae837170bb274e90ad3934386 (patch) | |
tree | 514451e6dc6b46253293a00035d375e77b1c65ed /include/asm-avr32/setup.h | |
parent | 53e62d3aaa60590d4a69b4e07c29f448b5151047 (diff) | |
download | linux-5f97f7f9400de47ae837170bb274e90ad3934386.tar.bz2 |
[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>
Diffstat (limited to 'include/asm-avr32/setup.h')
-rw-r--r-- | include/asm-avr32/setup.h | 141 |
1 files changed, 141 insertions, 0 deletions
diff --git a/include/asm-avr32/setup.h b/include/asm-avr32/setup.h new file mode 100644 index 000000000000..10193da4113b --- /dev/null +++ b/include/asm-avr32/setup.h @@ -0,0 +1,141 @@ +/* + * Copyright (C) 2004-2006 Atmel Corporation + * + * Based on linux/include/asm-arm/setup.h + * Copyright (C) 1997-1999 Russel King + * + * 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_SETUP_H__ +#define __ASM_AVR32_SETUP_H__ + +#define COMMAND_LINE_SIZE 256 + +/* Magic number indicating that a tag table is present */ +#define ATAG_MAGIC 0xa2a25441 + +#ifndef __ASSEMBLY__ + +/* + * Generic memory range, used by several tags. + * + * addr is always physical. + * size is measured in bytes. + * next is for use by the OS, e.g. for grouping regions into + * linked lists. + */ +struct tag_mem_range { + u32 addr; + u32 size; + struct tag_mem_range * next; +}; + +/* The list ends with an ATAG_NONE node. */ +#define ATAG_NONE 0x00000000 + +struct tag_header { + u32 size; + u32 tag; +}; + +/* The list must start with an ATAG_CORE node */ +#define ATAG_CORE 0x54410001 + +struct tag_core { + u32 flags; + u32 pagesize; + u32 rootdev; +}; + +/* it is allowed to have multiple ATAG_MEM nodes */ +#define ATAG_MEM 0x54410002 +/* ATAG_MEM uses tag_mem_range */ + +/* command line: \0 terminated string */ +#define ATAG_CMDLINE 0x54410003 + +struct tag_cmdline { + char cmdline[1]; /* this is the minimum size */ +}; + +/* Ramdisk image (may be compressed) */ +#define ATAG_RDIMG 0x54410004 +/* ATAG_RDIMG uses tag_mem_range */ + +/* Information about various clocks present in the system */ +#define ATAG_CLOCK 0x54410005 + +struct tag_clock { + u32 clock_id; /* Which clock are we talking about? */ + u32 clock_flags; /* Special features */ + u64 clock_hz; /* Clock speed in Hz */ +}; + +/* The clock types we know about */ +#define CLOCK_BOOTCPU 0 + +/* Memory reserved for the system (e.g. the bootloader) */ +#define ATAG_RSVD_MEM 0x54410006 +/* ATAG_RSVD_MEM uses tag_mem_range */ + +/* Ethernet information */ + +#define ATAG_ETHERNET 0x54410007 + +struct tag_ethernet { + u8 mac_index; + u8 mii_phy_addr; + u8 hw_address[6]; +}; + +#define ETH_INVALID_PHY 0xff + +struct tag { + struct tag_header hdr; + union { + struct tag_core core; + struct tag_mem_range mem_range; + struct tag_cmdline cmdline; + struct tag_clock clock; + struct tag_ethernet ethernet; + } u; +}; + +struct tagtable { + u32 tag; + int (*parse)(struct tag *); +}; + +#define __tag __attribute_used__ __attribute__((__section__(".taglist"))) +#define __tagtable(tag, fn) \ + static struct tagtable __tagtable_##fn __tag = { tag, fn } + +#define tag_member_present(tag,member) \ + ((unsigned long)(&((struct tag *)0L)->member + 1) \ + <= (tag)->hdr.size * 4) + +#define tag_next(t) ((struct tag *)((u32 *)(t) + (t)->hdr.size)) +#define tag_size(type) ((sizeof(struct tag_header) + sizeof(struct type)) >> 2) + +#define for_each_tag(t,base) \ + for (t = base; t->hdr.size; t = tag_next(t)) + +extern struct tag_mem_range *mem_phys; +extern struct tag_mem_range *mem_reserved; +extern struct tag_mem_range *mem_ramdisk; + +extern struct tag *bootloader_tags; + +extern void setup_bootmem(void); +extern void setup_processor(void); +extern void board_setup_fbmem(unsigned long fbmem_start, + unsigned long fbmem_size); + +/* Chip-specific hook to enable the use of SDRAM */ +void chip_enable_sdram(void); + +#endif /* !__ASSEMBLY__ */ + +#endif /* __ASM_AVR32_SETUP_H__ */ |