include/asm-mips/bootinfo.h

/* */
   1 /*
   2  * bootinfo.h -- Definition of the Linux/MIPS boot information structure
   3  *
   4  * Copyright (C) 1994 by Waldorf Electronics
   5  * Written by Ralf Baechle and Andreas Busse
   6  *
   7  * Based on Linux/68k linux/include/linux/bootstrap.h
   8  * Copyright (C) 1992 by Greg Harp
   9  *
  10  * This file is subject to the terms and conditions of the GNU General Public
  11  * License.  See the file README.legal in the main directory of this archive
  12  * for more details.
  13  */
  14 #ifndef __ASM_MIPS_BOOTINFO_H
  15 #define __ASM_MIPS_BOOTINFO_H
  16 
  17 /*
  18  * Valid machtype values
  19  */
  20 #define MACH_UNKNOWN            0               /* whatever...               */
  21 #define MACH_DESKSTATION_RPC44  1               /* Deskstation rPC44         */
  22 #define MACH_DESKSTATION_TYNE   2               /* Deskstation Tyne          */
  23 #define MACH_ACER_PICA_61       3               /* Acer PICA-61 (PICA1)      */
  24 #define MACH_MIPS_MAGNUM_4000   4               /* Mips Magnum 4000 "RC4030" */
  25 #define MACH_OLIVETTI_M700      5               /* Olivetti M700 */
  26 #define MACH_LAST               5
  27 
  28 #define MACH_NAMES { "unknown", "Deskstation rPC44", "Deskstation Tyne", \
  29         "Acer PICA 61", "Mips Magnum 4000", "Olivetti M700" }
  30 
  31 /*
  32  * Valid cputype values
  33  */
  34 #define CPU_UNKNOWN             0
  35 #define CPU_R2000               1
  36 #define CPU_R3000               2
  37 #define CPU_R3000A              3
  38 #define CPU_R3041               4
  39 #define CPU_R3051               5
  40 #define CPU_R3052               6
  41 #define CPU_R3081               7
  42 #define CPU_R3081E              8
  43 #define CPU_R4000PC             9
  44 #define CPU_R4000SC             10
  45 #define CPU_R4000MC             11
  46 #define CPU_R4200               12
  47 #define CPU_R4400PC             13
  48 #define CPU_R4400SC             14
  49 #define CPU_R4400MC             15
  50 #define CPU_R4600               16
  51 #define CPU_R6000               17
  52 #define CPU_R6000A              18
  53 #define CPU_R8000               19
  54 #define CPU_R10000              20
  55 #define CPU_LAST                20
  56 
  57 #define CPU_NAMES { "unknown", "R2000", "R3000", "R3000A", "R3041", "R3051", \
  58         "R3052", "R3081", "R3081E", "R4000PC", "R4000SC", "R4000MC",         \
  59         "R4200", "R4400PC", "R4400SC", "R4400MC", "R4600", "R6000",          \
  60         "R6000A", "R8000", "R10000" }
  61 
  62 #define CL_SIZE      (80)
  63 
  64 #ifndef __LANGUAGE_ASSEMBLY__
  65 
  66 /*
  67  * Some machine parameters passed by MILO. Note that bootinfo
  68  * *must* be in the data segment since the kernel clears the
  69  * bss segment directly after startup.
  70  */
  71 
  72 struct drive_info_struct {
  73         char dummy[32];
  74         };
  75 
  76 struct bootinfo {
  77         /*
  78          * machine type
  79          */
  80         unsigned long machtype;
  81 
  82         /*
  83          * system CPU & FPU
  84          */
  85         unsigned long cputype;
  86 
  87         /*
  88          * Installed RAM
  89          */
  90         unsigned long memlower;
  91         unsigned long memupper;
  92 
  93         /*
  94          * Cache Sizes (0xffffffff = unknown)
  95          */
  96         unsigned long icache_size;
  97         unsigned long icache_linesize;
  98         unsigned long dcache_size;
  99         unsigned long dcache_linesize;
 100         unsigned long scache_size;
 101         unsigned long scache_linesize;
 102 
 103         /*
 104          * TLB Info
 105          */
 106         unsigned long tlb_entries;
 107 
 108         /*
 109          * DMA buffer size (Deskstation only)
 110          */
 111         unsigned long dma_cache_size;
 112         unsigned long dma_cache_base;
 113 
 114         /*
 115          * Ramdisk Info
 116          */
 117         unsigned long ramdisk_flags;            /* ramdisk flags */
 118         unsigned long ramdisk_base;             /* address of the ram disk in mem */
 119 
 120         /*
 121          * Boot flags for the kernel
 122          */
 123         unsigned long mount_root_rdonly;
 124         struct drive_info_struct drive_info;
 125 
 126         /*
 127          * Video ram info (not in tty.h)
 128          */
 129         unsigned long vram_base;                /* video ram base address */
 130       
 131         char command_line[CL_SIZE];             /* kernel command line parameters */
 132   
 133 };
 134 
 135 #if 0
 136 /*
 137  * New style bootinfo
 138  *
 139  * Add new tags only at the end of the enum; *never* remove any tags
 140  * or you'll break compatibility!
 141  */
 142 enum bi_tag {   
 143         /*
 144          * not a real tag
 145          */
 146         dummy,
 147 
 148         /*
 149          * machine type
 150          */
 151         machtype,
 152 
 153         /*
 154          * system CPU & FPU
 155          */
 156         cputype,
 157 
 158         /*
 159          * Installed RAM
 160          */
 161         memlower,
 162         memupper,
 163 
 164         /*
 165          * Cache Sizes (0xffffffff = unknown)
 166          */
 167         icache_size,
 168         icache_linesize,
 169         dcache_size,
 170         dcache_linesize,
 171         scache_size,
 172         scache_linesize,
 173 
 174         /*
 175          * TLB Info
 176          */
 177         tlb_entries,
 178 
 179         /*
 180          * DMA buffer size (Deskstation only)
 181          */
 182         dma_cache_size,
 183         dma_cache_base,
 184 
 185         /*
 186          * Ramdisk Info
 187          */
 188         ramdisk_size,           /* ramdisk size in 1024 byte blocks */
 189         ramdisk_base,           /* address of the ram disk in mem */
 190 
 191         /*
 192          * Boot flags for the kernel
 193          */
 194         mount_root_rdonly,
 195         drive_info,
 196 
 197         /*
 198          * Video ram info (not in tty.h)
 199          */
 200         vram_base,              /* video ram base address */
 201       
 202         command_line            /* kernel command line parameters */
 203   
 204 };
 205 
 206 typedef struct {
 207         bi_tag          tag;
 208         unsigned long   size;
 209 } tag;
 210 #endif
 211 
 212 extern struct bootinfo boot_info;
 213 
 214 /*
 215  * Defaults, may be overwritten by milo. We initialize
 216  * them to make sure that both boot_info and screen_info
 217  * are in the .data segment since the .bss segment is
 218  * cleared during startup.
 219  */
 220 #define BOOT_INFO { 0,0,0,0, 0,0,0,0, 0,0,0,0, 0,0,0,0, {{0,}}, 0, "" }
 221 #define SCREEN_INFO {0, 0, {0, }, 52, 3, 80, 4626, 3, 9, 50}
 222 
 223 #else /* !__LANGUAGE_ASSEMBLY__ */
 224 
 225 /*
 226  * Same structure, but as offsets for usage within assembler source.
 227  * Don't mess with struct bootinfo without changing offsets too!
 228  */
 229 
 230 #define OFFSET_BOOTINFO_MACHTYPE           0
 231 #define OFFSET_BOOTINFO_CPUTYPE            4
 232 #define OFFSET_BOOTINFO_MEMLOWER           8
 233 #define OFFSET_BOOTINFO_MEMUPPER          12
 234 #define OFFSET_BOOTINFO_ICACHE_SIZE       16
 235 #define OFFSET_BOOTINFO_ICACHE_LINESIZE   20
 236 #define OFFSET_BOOTINFO_DCACHE_SIZE       24
 237 #define OFFSET_BOOTINFO_DCACHE_LINESIZE   28
 238 #define OFFSET_BOOTINFO_SCACHE_SIZE       32
 239 #define OFFSET_BOOTINFO_SCACHE_LINESIZE   36
 240 #define OFFSET_BOOTINFO_TLB_ENTRIES       40
 241 #define OFFSET_BOOTINFO_DMA_CACHE_SIZE    44
 242 #define OFFSET_BOOTINFO_DMA_CACHE_BASE    48
 243 #define OFFSET_BOOTINFO_RAMDISK_SIZE      52
 244 #define OFFSET_BOOTINFO_RAMDISK_BASE      56
 245 #define OFFSET_BOOTINFO_MOUNT_RD_ONLY     60
 246 #define OFFSET_BOOTINFO_DRIVE_INFO        64
 247 #define OFFSET_BOOTINFO_VRAM_BASE         96
 248 #define OFFSET_BOOTINFO_COMMAND_LINE      100
 249 
 250 #endif /* __LANGUAGE_ASSEMBLY__ */
 251 
 252 #endif /* __ASM_MIPS_BOOTINFO_H */
/* */
root/include/asm-mips/bootinfo.h

INCLUDED FROM
