/* * 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 /* * 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 */