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/*

 * bootinfo.h -- Definition of the Linux/MIPS boot information structure

 *

 * Copyright (C) 1994 by Waldorf Electronics

 * Written by Ralf Baechle and Andreas Busse

 *

 * Based on Linux/68k linux/include/linux/bootstrap.h

 * Copyright (C) 1992 by Greg Harp

 *

 * This file is subject to the terms and conditions of the GNU General Public

 * License.  See the file README.legal in the main directory of this archive

 * for more details.

 */

#ifndef __ASM_MIPS_BOOTINFO_H

#define __ASM_MIPS_BOOTINFO_H

/*

 * Valid machtype values

 */

#define MACH_UNKNOWN            0                /* whatever...               */

#define MACH_DESKSTATION_RPC44  1               /* Deskstation rPC44         */

#define MACH_DESKSTATION_TYNE   2               /* Deskstation Tyne          */

#define MACH_ACER_PICA_61       3               /* Acer PICA-61 (PICA1)      */

#define MACH_MIPS_MAGNUM_4000   4               /* Mips Magnum 4000 "RC4030" */

#define MACH_OLIVETTI_M700      5               /* Olivetti M700 */

#define MACH_LAST               5

#define MACH_NAMES { "unknown", "Deskstation rPC44", "Deskstation Tyne", \

        "Acer PICA 61", "Mips Magnum 4000", "Olivetti M700" }

/*

 * Valid cputype values

 */

#define CPU_UNKNOWN             0

#define CPU_R2000               1

#define CPU_R3000               2

#define CPU_R3000A              3

#define CPU_R3041               4

#define CPU_R3051               5

#define CPU_R3052               6

#define CPU_R3081               7

#define CPU_R3081E              8

#define CPU_R4000PC             9

#define CPU_R4000SC             10

#define CPU_R4000MC             11

#define CPU_R4200               12

#define CPU_R4400PC             13

#define CPU_R4400SC             14

#define CPU_R4400MC             15

#define CPU_R4600               16

#define CPU_R6000               17

#define CPU_R6000A              18

#define CPU_R8000               19

#define CPU_R10000              20

#define CPU_LAST                20

#define CPU_NAMES { "unknown", "R2000", "R3000", "R3000A", "R3041", "R3051", \

        "R3052", "R3081", "R3081E", "R4000PC", "R4000SC", "R4000MC",         \

        "R4200", "R4400PC", "R4400SC", "R4400MC", "R4600", "R6000",          \

        "R6000A", "R8000", "R10000" }

#define CL_SIZE      (80)

#ifndef __LANGUAGE_ASSEMBLY__

/*

 * Some machine parameters passed by MILO. Note that bootinfo

 * *must* be in the data segment since the kernel clears the

 * bss segment directly after startup.

 */

struct drive_info_struct {

        char dummy[32];

        };

struct bootinfo {

        /*

         * machine type

         */

        unsigned long machtype;

        /*

         * system CPU & FPU

         */

        unsigned long cputype;

        /*

         * Installed RAM

         */

        unsigned long memlower;

        unsigned long memupper;

        /*

         * Cache Sizes (0xffffffff = unknown)

         */

        unsigned long icache_size;

        unsigned long icache_linesize;

        unsigned long dcache_size;

        unsigned long dcache_linesize;

        unsigned long scache_size;

        unsigned long scache_linesize;

        /*

         * TLB Info

         */

        unsigned long tlb_entries;

        /*

         * DMA buffer size (Deskstation only)

         */

        unsigned long dma_cache_size;

        unsigned long dma_cache_base;

        /*

         * Ramdisk Info

         */

        unsigned long ramdisk_flags;            /* ramdisk flags */

        unsigned long ramdisk_base;             /* address of the ram disk in mem */

        /*

         * Boot flags for the kernel

         */

        unsigned long mount_root_rdonly;

        struct drive_info_struct drive_info;

        /*

         * Video ram info (not in tty.h)

         */

        unsigned long vram_base;                /* video ram base address */

        char command_line[CL_SIZE];             /* kernel command line parameters */

};

#if 0

/*

 * New style bootinfo

 *

 * Add new tags only at the end of the enum; *never* remove any tags

 * or you'll break compatibility!

 */

enum bi_tag {

        /*

         * not a real tag

         */

        dummy,

        /*

         * machine type

         */

        machtype,

        /*

         * system CPU & FPU

         */

        cputype,

        /*

         * Installed RAM

         */

        memlower,

        memupper,

        /*

         * Cache Sizes (0xffffffff = unknown)

         */

        icache_size,

        icache_linesize,

        dcache_size,

        dcache_linesize,

        scache_size,

        scache_linesize,

        /*

         * TLB Info

         */

        tlb_entries,

        /*

         * DMA buffer size (Deskstation only)

         */

        dma_cache_size,

        dma_cache_base,

        /*

         * Ramdisk Info

         */

        ramdisk_size,           /* ramdisk size in 1024 byte blocks */

        ramdisk_base,           /* address of the ram disk in mem */

        /*

         * Boot flags for the kernel

         */

        mount_root_rdonly,

        drive_info,

        /*

         * Video ram info (not in tty.h)

         */

        vram_base,              /* video ram base address */

        command_line            /* kernel command line parameters */

};

typedef struct {

        bi_tag          tag;

        unsigned long   size;

} tag;

#endif

extern struct bootinfo boot_info;

/*

 * Defaults, may be overwritten by milo. We initialize

 * them to make sure that both boot_info and screen_info

 * are in the .data segment since the .bss segment is

 * cleared during startup.

 */

#define BOOT_INFO { 0,0,0,0, 0,0,0,0, 0,0,0,0, 0,0,0,0, {{0,}}, 0, "" }

#define SCREEN_INFO {0, 0, {0, }, 52, 3, 80, 4626, 3, 9, 50}

#else /* !__LANGUAGE_ASSEMBLY__ */

/*

 * Same structure, but as offsets for usage within assembler source.

 * Don't mess with struct bootinfo without changing offsets too!

 */

#define OFFSET_BOOTINFO_MACHTYPE           0

#define OFFSET_BOOTINFO_CPUTYPE            4

#define OFFSET_BOOTINFO_MEMLOWER           8

#define OFFSET_BOOTINFO_MEMUPPER          12

#define OFFSET_BOOTINFO_ICACHE_SIZE       16

#define OFFSET_BOOTINFO_ICACHE_LINESIZE   20

#define OFFSET_BOOTINFO_DCACHE_SIZE       24

#define OFFSET_BOOTINFO_DCACHE_LINESIZE   28

#define OFFSET_BOOTINFO_SCACHE_SIZE       32

#define OFFSET_BOOTINFO_SCACHE_LINESIZE   36

#define OFFSET_BOOTINFO_TLB_ENTRIES       40

#define OFFSET_BOOTINFO_DMA_CACHE_SIZE    44

#define OFFSET_BOOTINFO_DMA_CACHE_BASE    48

#define OFFSET_BOOTINFO_RAMDISK_SIZE      52

#define OFFSET_BOOTINFO_RAMDISK_BASE      56

#define OFFSET_BOOTINFO_MOUNT_RD_ONLY     60

#define OFFSET_BOOTINFO_DRIVE_INFO        64

#define OFFSET_BOOTINFO_VRAM_BASE         96

#define OFFSET_BOOTINFO_COMMAND_LINE      100

#endif /* __LANGUAGE_ASSEMBLY__ */

#endif /* __ASM_MIPS_BOOTINFO_H */