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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 */
/*
* 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_size; /* ramdisk size in 1024 byte blocks */
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 */
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