| /* |
| * linux/include/asm/setup.h |
| * |
| * Copyright (C) 1997-1999 Russell 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. |
| * |
| * Structure passed to kernel to tell it about the |
| * hardware it's running on. See Documentation/arm/Setup |
| * for more info. |
| */ |
| #ifndef __ASMARM_SETUP_H |
| #define __ASMARM_SETUP_H |
| |
| #include <linux/types.h> |
| |
| #define COMMAND_LINE_SIZE 1024 |
| |
| /* 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; /* bit 0 = read-only */ |
| __u32 pagesize; |
| __u32 rootdev; |
| }; |
| |
| /* it is allowed to have multiple ATAG_MEM nodes */ |
| #define ATAG_MEM 0x54410002 |
| |
| struct tag_mem32 { |
| __u32 size; |
| __u32 start; /* physical start address */ |
| }; |
| |
| /* VGA text type displays */ |
| #define ATAG_VIDEOTEXT 0x54410003 |
| |
| struct tag_videotext { |
| __u8 x; |
| __u8 y; |
| __u16 video_page; |
| __u8 video_mode; |
| __u8 video_cols; |
| __u16 video_ega_bx; |
| __u8 video_lines; |
| __u8 video_isvga; |
| __u16 video_points; |
| }; |
| |
| /* describes how the ramdisk will be used in kernel */ |
| #define ATAG_RAMDISK 0x54410004 |
| |
| struct tag_ramdisk { |
| __u32 flags; /* bit 0 = load, bit 1 = prompt */ |
| __u32 size; /* decompressed ramdisk size in _kilo_ bytes */ |
| __u32 start; /* starting block of floppy-based RAM disk image */ |
| }; |
| |
| /* describes where the compressed ramdisk image lives (virtual address) */ |
| /* |
| * this one accidentally used virtual addresses - as such, |
| * it's deprecated. |
| */ |
| #define ATAG_INITRD 0x54410005 |
| |
| /* describes where the compressed ramdisk image lives (physical address) */ |
| #define ATAG_INITRD2 0x54420005 |
| |
| struct tag_initrd { |
| __u32 start; /* physical start address */ |
| __u32 size; /* size of compressed ramdisk image in bytes */ |
| }; |
| |
| /* board serial number. "64 bits should be enough for everybody" */ |
| #define ATAG_SERIAL 0x54410006 |
| |
| struct tag_serialnr { |
| __u32 low; |
| __u32 high; |
| }; |
| |
| /* board revision */ |
| #define ATAG_REVISION 0x54410007 |
| |
| struct tag_revision { |
| __u32 rev; |
| }; |
| |
| /* initial values for vesafb-type framebuffers. see struct screen_info |
| * in include/linux/tty.h |
| */ |
| #define ATAG_VIDEOLFB 0x54410008 |
| |
| struct tag_videolfb { |
| __u16 lfb_width; |
| __u16 lfb_height; |
| __u16 lfb_depth; |
| __u16 lfb_linelength; |
| __u32 lfb_base; |
| __u32 lfb_size; |
| __u8 red_size; |
| __u8 red_pos; |
| __u8 green_size; |
| __u8 green_pos; |
| __u8 blue_size; |
| __u8 blue_pos; |
| __u8 rsvd_size; |
| __u8 rsvd_pos; |
| }; |
| |
| /* command line: \0 terminated string */ |
| #define ATAG_CMDLINE 0x54410009 |
| |
| struct tag_cmdline { |
| char cmdline[1]; /* this is the minimum size */ |
| }; |
| |
| /* acorn RiscPC specific information */ |
| #define ATAG_ACORN 0x41000101 |
| |
| struct tag_acorn { |
| __u32 memc_control_reg; |
| __u32 vram_pages; |
| __u8 sounddefault; |
| __u8 adfsdrives; |
| }; |
| |
| /* footbridge memory clock, see arch/arm/mach-footbridge/arch.c */ |
| #define ATAG_MEMCLK 0x41000402 |
| |
| struct tag_memclk { |
| __u32 fmemclk; |
| }; |
| |
| struct tag { |
| struct tag_header hdr; |
| union { |
| struct tag_core core; |
| struct tag_mem32 mem; |
| struct tag_videotext videotext; |
| struct tag_ramdisk ramdisk; |
| struct tag_initrd initrd; |
| struct tag_serialnr serialnr; |
| struct tag_revision revision; |
| struct tag_videolfb videolfb; |
| struct tag_cmdline cmdline; |
| |
| /* |
| * Acorn specific |
| */ |
| struct tag_acorn acorn; |
| |
| /* |
| * DC21285 specific |
| */ |
| struct tag_memclk memclk; |
| } u; |
| }; |
| |
| struct tagtable { |
| __u32 tag; |
| int (*parse)(const struct tag *); |
| }; |
| |
| #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)) |
| |
| |
| #endif |