arch/arm/include/uapi/asm/setup.h

   1 /*
   2  *  linux/include/asm/setup.h
   3  *
   4  *  Copyright (C) 1997-1999 Russell King
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9  *
  10  *  Structure passed to kernel to tell it about the
  11  *  hardware it's running on.  See Documentation/arm/Setup
  12  *  for more info.
  13  */
  14 #ifndef _UAPI__ASMARM_SETUP_H
  15 #define _UAPI__ASMARM_SETUP_H
  16
  17 #include <linux/types.h>
  18 #include <mach/dfo_boot.h>
  19 #include <mach/mt_devinfo.h>
  20
  21 #define COMMAND_LINE_SIZE 1024
  22
  23 /* The list ends with an ATAG_NONE node. */
  24 #define ATAG_NONE       0x00000000
  25
  26 struct tag_header {
  27         __u32 size;
  28         __u32 tag;
  29 };
  30
  31 /* The list must start with an ATAG_CORE node */
  32 #define ATAG_CORE       0x54410001
  33
  34 struct tag_core {
  35         __u32 flags;            /* bit 0 = read-only */
  36         __u32 pagesize;
  37         __u32 rootdev;
  38 };
  39
  40 /* it is allowed to have multiple ATAG_MEM nodes */
  41 #define ATAG_MEM        0x54410002
  42
  43 struct tag_mem32 {
  44         __u32   size;
  45         __u32   start;  /* physical start address */
  46 };
  47
  48 /* it is allowed to have multiple ATAG_MEM nodes */
  49 #define ATAG_MEM64      0x54420002
  50
  51 struct tag_mem64 {
  52         __u64   size;
  53         __u64   start;  /* physical start address */
  54 };
  55
  56 /* VGA text type displays */
  57 #define ATAG_VIDEOTEXT  0x54410003
  58
  59 struct tag_videotext {
  60         __u8            x;
  61         __u8            y;
  62         __u16           video_page;
  63         __u8            video_mode;
  64         __u8            video_cols;
  65         __u16           video_ega_bx;
  66         __u8            video_lines;
  67         __u8            video_isvga;
  68         __u16           video_points;
  69 };
  70
  71 /* describes how the ramdisk will be used in kernel */
  72 #define ATAG_RAMDISK    0x54410004
  73
  74 struct tag_ramdisk {
  75         __u32 flags;    /* bit 0 = load, bit 1 = prompt */
  76         __u32 size;     /* decompressed ramdisk size in _kilo_ bytes */
  77         __u32 start;    /* starting block of floppy-based RAM disk image */
  78 };
  79
  80 /* describes where the compressed ramdisk image lives (virtual address) */
  81 /*
  82  * this one accidentally used virtual addresses - as such,
  83  * it's deprecated.
  84  */
  85 #define ATAG_INITRD     0x54410005
  86
  87 /* describes where the compressed ramdisk image lives (physical address) */
  88 #define ATAG_INITRD2    0x54420005
  89
  90 struct tag_initrd {
  91         __u32 start;    /* physical start address */
  92         __u32 size;     /* size of compressed ramdisk image in bytes */
  93 };
  94
  95 /* board serial number. "64 bits should be enough for everybody" */
  96 #define ATAG_SERIAL     0x54410006
  97
  98 struct tag_serialnr {
  99         __u32 low;
 100         __u32 high;
 101 };
 102
 103 /* board revision */
 104 #define ATAG_REVISION   0x54410007
 105
 106 struct tag_revision {
 107         __u32 rev;
 108 };
 109
 110 /* initial values for vesafb-type framebuffers. see struct screen_info
 111  * in include/linux/tty.h
 112  */
 113 #define ATAG_VIDEOLFB   0x54410008
 114
 115 struct tag_videolfb {
 116         __u16           lfb_width;
 117         __u16           lfb_height;
 118         __u16           lfb_depth;
 119         __u16           lfb_linelength;
 120         __u32           lfb_base;
 121         __u32           lfb_size;
 122         __u8            red_size;
 123         __u8            red_pos;
 124         __u8            green_size;
 125         __u8            green_pos;
 126         __u8            blue_size;
 127         __u8            blue_pos;
 128         __u8            rsvd_size;
 129         __u8            rsvd_pos;
 130 };
 131
 132 /* command line: \0 terminated string */
 133 #define ATAG_CMDLINE    0x54410009
 134
 135 struct tag_cmdline {
 136         char    cmdline[1];     /* this is the minimum size */
 137 };
 138
 139 /* acorn RiscPC specific information */
 140 #define ATAG_ACORN      0x41000101
 141
 142 struct tag_acorn {
 143         __u32 memc_control_reg;
 144         __u32 vram_pages;
 145         __u8 sounddefault;
 146         __u8 adfsdrives;
 147 };
 148
 149 /* footbridge memory clock, see arch/arm/mach-footbridge/arch.c */
 150 #define ATAG_MEMCLK     0x41000402
 151
 152 struct tag_memclk {
 153         __u32 fmemclk;
 154 };
 155
 156 /* boot information */
 157 #define ATAG_BOOT       0x41000802
 158
 159 struct tag_boot {
 160         u32 bootmode;
 161 };
 162
 163 /*META com port information*/
 164 #define ATAG_META_COM 0x41000803
 165
 166 struct tag_meta_com {
 167         u32 meta_com_type; /* identify meta via uart or usb */
 168         u32 meta_com_id;  /* multiple meta need to know com port id */
 169 };
 170
 171
 172 /* MDINFO */
 173 #define ATAG_MDINFO_DATA 0x41000806
 174 struct tag_mdinfo_data{
 175         u8 md_type[4];
 176 };
 177
 178 #define ATAG_TEE_DATA 0x41000808
 179
 180 /* general memory descriptor */
 181 typedef struct {
 182     u64 start;
 183     u64 size;
 184 } mem_desc_t;
 185
 186 /* mblock is used by CPU */
 187 typedef struct {
 188         u64 start;
 189         u64 size;
 190         u32 rank;       /* rank the mblock belongs to */
 191 } mblock_t;
 192
 193 typedef struct {
 194         u32 mblock_num;
 195         mblock_t mblock[4];
 196 } mblock_info_t;
 197
 198 typedef struct {
 199         u32 rank_num;
 200         mem_desc_t rank_info[4];
 201 } dram_info_t;
 202
 203 struct tag {
 204         struct tag_header hdr;
 205         union {
 206                 struct tag_core         core;
 207                 struct tag_mem32        mem;
 208                 struct tag_mem64        mem64;
 209                 struct tag_videotext    videotext;
 210                 struct tag_ramdisk      ramdisk;
 211                 struct tag_initrd       initrd;
 212                 struct tag_serialnr     serialnr;
 213                 struct tag_revision     revision;
 214                 struct tag_videolfb     videolfb;
 215                 struct tag_cmdline      cmdline;
 216
 217                 /*
 218                  * Acorn specific
 219                  */
 220                 struct tag_acorn        acorn;
 221
 222                 /*
 223                  * DC21285 specific
 224                  */
 225                 struct tag_memclk       memclk;
 226                 struct tag_boot         boot;
 227                 struct tag_meta_com     meta_com;
 228                 struct tag_devinfo_data devinfo_data;
 229                 tag_dfo_boot     dfo_data;
 230                 struct tag_mdinfo_data mdinfo_data;
 231                 mem_desc_t tee_reserved_mem;
 232 #if 0
 233 #ifdef PT_ABTC_ATAG
 234                 struct tag_pt_info tag_pt_info;
 235 #endif
 236 #ifdef NAND_ABTC_ATAG
 237                 struct tag_nand_number tag_nand_number;
 238                 flashdev_info_t gen_FlashTable_p;
 239 #endif
 240 #endif
 241         } u;
 242 };
 243
 244 struct tagtable {
 245         __u32 tag;
 246         int (*parse)(const struct tag *);
 247 };
 248
 249 #define tag_member_present(tag,member)                          \
 250         ((unsigned long)(&((struct tag *)0L)->member + 1)       \
 251                 <= (tag)->hdr.size * 4)
 252
 253 #define tag_next(t)     ((struct tag *)((__u32 *)(t) + (t)->hdr.size))
 254 #define tag_size(type)  ((sizeof(struct tag_header) + sizeof(struct type)) >> 2)
 255
 256 #define for_each_tag(t,base)            \
 257         for (t = base; t->hdr.size; t = tag_next(t))
 258
 259
 260 #endif /* _UAPI__ASMARM_SETUP_H */