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/*
* bootinfo.h -- Definition of the Linux/MIPS boot information structure
*
* Copyright (C) 1995, 1996 by Ralf Baechle, Andreas Busse,
* Stoned Elipot and Paul M. Antoine.
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file COPYING in the main directory of this archive
* for more details.
*
* $Id: bootinfo.h,v 1.3 1997/09/19 08:37:44 ralf Exp $
*/
#ifndef __ASM_MIPS_BOOTINFO_H
#define __ASM_MIPS_BOOTINFO_H
/* XXX */
#include <linux/config.h>
/*
* Values for machgroup
*/
#define MACH_GROUP_UNKNOWN 0 /* whatever... */
#define MACH_GROUP_JAZZ 1 /* Jazz */
#define MACH_GROUP_DEC 2 /* Digital Equipment */
#define MACH_GROUP_ARC 3 /* Wreckstation Tyne, rPC44, possibly other */
#define MACH_GROUP_SNI_RM 4 /* Siemens Nixdorf RM series */
#define MACH_GROUP_ACN 5
#define MACH_GROUP_SGI 6 /* Silicon Graphics workstations and servers */
#define MACH_GROUP_RESERVED 7 /* No Such Architecture */
#define GROUP_NAMES { "unknown", "Jazz", "Digital", "ARC", \
"SNI", "ACN", "SGI", "NSA" }
/*
* Valid machtype values for group unknown (low order halfword of mips_machtype)
*/
#define MACH_UNKNOWN 0 /* whatever... */
#define GROUP_UNKNOWN_NAMES { "unknown" }
/*
* Valid machtype values for group JAZZ
*/
#define MACH_ACER_PICA_61 0 /* Acer PICA-61 (PICA1) */
#define MACH_MIPS_MAGNUM_4000 1 /* Mips Magnum 4000 "RC4030" */
#define MACH_OLIVETTI_M700 2 /* Olivetti M700-10 (-15 ??) */
#define GROUP_JAZZ_NAMES { "Acer PICA 61", "Mips Magnum 4000", "Olivetti M700" }
/*
* Valid machtype for group DEC
*/
/* FIXME: this is a very fuzzy name, and we got a big "name space now" */
/* So otiginal DEC codes can be used -Stoned */
#define MACH_DECSTATION 0 /* DECStation 5000/2x for now */
#define GROUP_DEC_NAMES { "3min" }
/*
* Valid machtype for group ARC
*/
#define MACH_DESKSTATION_RPC44 0 /* Deskstation rPC44 */
#define MACH_DESKSTATION_TYNE 1 /* Deskstation Tyne */
#define GROUP_ARC_NAMES { "Deskstation rPC44", "Deskstation Tyne" }
/*
* Valid machtype for group SNI_RM
*/
#define MACH_SNI_RM200_PCI 0 /* RM200/RM300/RM400 PCI series */
#define GROUP_SNI_RM_NAMES { "RM200 PCI" }
/*
* Valid machtype for group ACN
*/
#define MACH_ACN_MIPS_BOARD 0 /* ACN MIPS single board */
#define GROUP_ACN_NAMES { "ACN" }
/*
* Valid machtype for group SGI
*/
#define MACH_SGI_INDY 0 /* R4?K and R5K Indy workstaions */
#define GROUP_SGI_NAMES { "Indy" }
/*
* 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_R4300 21
#define CPU_R4650 22
#define CPU_R4700 23
#define CPU_R5000 24
#define CPU_R5000A 25
#define CPU_R4640 26
#define CPU_NEVADA 27 /* RM5230, RM5260 */
#define CPU_LAST 27
#define CPU_NAMES { "unknown", "R2000", "R3000", "R3000A", "R3041", "R3051", \
"R3052", "R3081", "R3081E", "R4000PC", "R4000SC", "R4000MC", \
"R4200", "R4400PC", "R4400SC", "R4400MC", "R4600", "R6000", \
"R6000A", "R8000", "R10000", "R4300", "R4650", "R4700", "R5000", \
"R5000A", "R4640", "Nevada" }
#define CL_SIZE (80)
#ifndef __LANGUAGE_ASSEMBLY__
/*
* Some machine parameters passed by the bootloaders.
*/
struct drive_info_struct {
char dummy[32];
};
/* This is the same as in Milo but renamed for the sake of kernel's */
/* namespace */
typedef struct mips_arc_DisplayInfo { /* video adapter information */
unsigned short cursor_x;
unsigned short cursor_y;
unsigned short columns;
unsigned short lines;
} mips_arc_DisplayInfo;
/*
* 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
*/
tag_dummy,
/*
* machine type
*/
tag_machtype,
/*
* system CPU & FPU
*/
tag_cputype,
/*
* Installed RAM
*/
tag_memlower,
tag_memupper,
/*
* Cache Sizes (0xffffffff = unknown)
*/
tag_icache_size,
tag_icache_linesize,
tag_dcache_size,
tag_dcache_linesize,
tag_scache_size,
tag_scache_linesize,
/*
* TLB Info
*/
tag_tlb_entries,
/*
* DMA buffer size (Deskstation only)
*/
tag_dma_cache_size,
tag_dma_cache_base,
/*
* Ramdisk Info
*/
tag_ramdisk_size, /* ramdisk size in 1024 byte blocks */
tag_ramdisk_base, /* address of the ram disk in mem */
/*
* Boot flags for the kernel
*/
tag_mount_root_rdonly,
tag_drive_info,
/*
* Video ram info (not in tty.h)
*/
tag_vram_base, /* video ram base address */
tag_command_line, /* kernel command line parameters */
/*
* machine group
*/
tag_machgroup,
/*
* info on the display from the ARC BIOS
*/
tag_arcdisplayinfo,
/*
* tag to pass a complete struct screen_info
*/
tag_screen_info
};
/* struct defining a tag */
typedef struct {
enum bi_tag tag;
unsigned long size;
} tag;
/* struct to define a tag and it's data */
typedef struct {
tag t;
void* d;
} tag_def;
/* macros for parsing tag list */
#define TAGVALPTR(t) ((void*)(((void*)(t)) - ((t)->size)))
#define NEXTTAGPTR(t) ((void*)(TAGVALPTR(t) - (sizeof(tag))))
/* size macros for tag size field */
#define UCHARSIZE (sizeof(unsigned char))
#define ULONGSIZE (sizeof(unsigned long))
#define UINTSIZE (sizeof(unsigned int))
#define DRVINFOSIZE (sizeof(struct drive_info_struct))
#define CMDLINESIZE (sizeof(char[CL_SIZE])
/*
* For tag readers aka the kernel
*/
tag *bi_TagFind(enum bi_tag type);
void bi_EarlySnarf(void);
/* For tag creators aka bootloaders */
/* Now implemented in Milo 0.26 */
int bi_TagAdd(enum bi_tag type, unsigned long size, void *data);
int bi_TagAddList(tag_def* taglist);
void bi_TagWalk(void);
#ifdef CONFIG_SGI
/* screen info will dissapear... soon */
#define DEFAULT_SCREEN_INFO {0, 0, {0, 0, }, 0, 0, 158, 0, 0, 0, 62, 0, 16}
#define DEFAULT_DRIVE_INFO { {0,}}
#else
/* default values for screen_info variable */
#define DEFAULT_SCREEN_INFO {0, 0, {0, }, 52, 3, 80, 4626, 3, 9, 50}
/* default values for drive info */
#define DEFAULT_DRIVE_INFO { {0,}}
#endif
/*
* These are the kernel variables initialized from
* the tag. And they have to be initialized to dummy/default
* values in setup.c (or whereever suitable) so they are in
* .data section
*/
extern unsigned long mips_memory_upper;
extern unsigned long mips_cputype;
extern unsigned long mips_machtype;
extern unsigned long mips_machgroup;
extern unsigned long mips_tlb_entries;
extern unsigned long mips_vram_base;
extern unsigned long mips_dma_cache_size;
extern unsigned long mips_dma_cache_base;
#endif /* __LANGUAGE_ASSEMBLY__ */
#endif /* __ASM_MIPS_BOOTINFO_H */
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