- /*
- * 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 linux/Documentation/arm/Setup
- * for more info.
- *
- * NOTE:
- * This file contains two ways to pass information from the boot
- * loader to the kernel. The old struct param_struct is deprecated,
- * but it will be kept in the kernel for 5 years from now
- * (2001). This will allow boot loaders to convert to the new struct
- * tag way.
- */
- #ifndef __ASMARM_SETUP_H
- #define __ASMARM_SETUP_H
- /*
- * Usage:
- * - do not go blindly adding fields, add them at the end
- * - when adding fields, don't rely on the address until
- * a patch from me has been released
- * - unused fields should be zero (for future expansion)
- * - this structure is relatively short-lived - only
- * guaranteed to contain useful data in setup_arch()
- */
- #define COMMAND_LINE_SIZE 1024
- /* This is the old deprecated way to pass parameters to the kernel */
- struct param_struct {
- union {
- struct {
- unsigned long page_size; /* 0 */
- unsigned long nr_pages; /* 4 */
- unsigned long ramdisk_size; /* 8 */
- unsigned long flags; /* 12 */
- #define FLAG_READONLY 1
- #define FLAG_RDLOAD 4
- #define FLAG_RDPROMPT 8
- unsigned long rootdev; /* 16 */
- unsigned long video_num_cols; /* 20 */
- unsigned long video_num_rows; /* 24 */
- unsigned long video_x; /* 28 */
- unsigned long video_y; /* 32 */
- unsigned long memc_control_reg; /* 36 */
- unsigned char sounddefault; /* 40 */
- unsigned char adfsdrives; /* 41 */
- unsigned char bytes_per_char_h; /* 42 */
- unsigned char bytes_per_char_v; /* 43 */
- unsigned long pages_in_bank[4]; /* 44 */
- unsigned long pages_in_vram; /* 60 */
- unsigned long initrd_start; /* 64 */
- unsigned long initrd_size; /* 68 */
- unsigned long rd_start; /* 72 */
- unsigned long system_rev; /* 76 */
- unsigned long system_serial_low; /* 80 */
- unsigned long system_serial_high; /* 84 */
- unsigned long mem_fclk_21285; /* 88 */
- } s;
- char unused[256];
- } u1;
- union {
- char paths[8][128];
- struct {
- unsigned long magic;
- char n[1024 - sizeof(unsigned long)];
- } s;
- } u2;
- char commandline[COMMAND_LINE_SIZE];
- };
- /*
- * The new way of passing information: a list of tagged entries
- */
- /* 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,
- * its depreciated.
- */
- #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: