1382d71afSLaurent Vivier /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ 2382d71afSLaurent Vivier /* 3382d71afSLaurent Vivier * asm/bootinfo.h -- Definition of the Linux/m68k boot information structure 4382d71afSLaurent Vivier * 5382d71afSLaurent Vivier * Copyright 1992 by Greg Harp 6382d71afSLaurent Vivier * 7382d71afSLaurent Vivier * This file is subject to the terms and conditions of the GNU General Public 8382d71afSLaurent Vivier * License. See the file COPYING in the main directory of this archive 9382d71afSLaurent Vivier * for more details. 10382d71afSLaurent Vivier */ 11382d71afSLaurent Vivier 12382d71afSLaurent Vivier #ifndef _UAPI_ASM_M68K_BOOTINFO_H 13382d71afSLaurent Vivier #define _UAPI_ASM_M68K_BOOTINFO_H 14382d71afSLaurent Vivier 15382d71afSLaurent Vivier 16382d71afSLaurent Vivier /* 17382d71afSLaurent Vivier * Bootinfo definitions 18382d71afSLaurent Vivier * 19382d71afSLaurent Vivier * This is an easily parsable and extendable structure containing all 20382d71afSLaurent Vivier * information to be passed from the bootstrap to the kernel. 21382d71afSLaurent Vivier * 22382d71afSLaurent Vivier * This way I hope to keep all future changes back/forewards compatible. 23382d71afSLaurent Vivier * Thus, keep your fingers crossed... 24382d71afSLaurent Vivier * 25382d71afSLaurent Vivier * This structure is copied right after the kernel by the bootstrap 26382d71afSLaurent Vivier * routine. 27382d71afSLaurent Vivier */ 28382d71afSLaurent Vivier 29382d71afSLaurent Vivier struct bi_record { 30382d71afSLaurent Vivier uint16_t tag; /* tag ID */ 31382d71afSLaurent Vivier uint16_t size; /* size of record (in bytes) */ 32382d71afSLaurent Vivier uint32_t data[0]; /* data */ 33382d71afSLaurent Vivier }; 34382d71afSLaurent Vivier 35382d71afSLaurent Vivier 36382d71afSLaurent Vivier struct mem_info { 37382d71afSLaurent Vivier uint32_t addr; /* physical address of memory chunk */ 38382d71afSLaurent Vivier uint32_t size; /* length of memory chunk (in bytes) */ 39382d71afSLaurent Vivier }; 40382d71afSLaurent Vivier 41382d71afSLaurent Vivier 42382d71afSLaurent Vivier /* 43382d71afSLaurent Vivier * Tag Definitions 44382d71afSLaurent Vivier * 45382d71afSLaurent Vivier * Machine independent tags start counting from 0x0000 46382d71afSLaurent Vivier * Machine dependent tags start counting from 0x8000 47382d71afSLaurent Vivier */ 48382d71afSLaurent Vivier 49382d71afSLaurent Vivier #define BI_LAST 0x0000 /* last record (sentinel) */ 50382d71afSLaurent Vivier #define BI_MACHTYPE 0x0001 /* machine type (uint32_t) */ 51382d71afSLaurent Vivier #define BI_CPUTYPE 0x0002 /* cpu type (uint32_t) */ 52382d71afSLaurent Vivier #define BI_FPUTYPE 0x0003 /* fpu type (uint32_t) */ 53382d71afSLaurent Vivier #define BI_MMUTYPE 0x0004 /* mmu type (uint32_t) */ 54382d71afSLaurent Vivier #define BI_MEMCHUNK 0x0005 /* memory chunk address and size */ 55382d71afSLaurent Vivier /* (struct mem_info) */ 56382d71afSLaurent Vivier #define BI_RAMDISK 0x0006 /* ramdisk address and size */ 57382d71afSLaurent Vivier /* (struct mem_info) */ 58382d71afSLaurent Vivier #define BI_COMMAND_LINE 0x0007 /* kernel command line parameters */ 59382d71afSLaurent Vivier /* (string) */ 60*693869a6SJason A. Donenfeld /* 61*693869a6SJason A. Donenfeld * A random seed used to initialize the RNG. Record format: 62*693869a6SJason A. Donenfeld * 63*693869a6SJason A. Donenfeld * - length [ 2 bytes, 16-bit big endian ] 64*693869a6SJason A. Donenfeld * - seed data [ `length` bytes, padded to preserve 4-byte struct alignment ] 65*693869a6SJason A. Donenfeld */ 66*693869a6SJason A. Donenfeld #define BI_RNG_SEED 0x0008 67382d71afSLaurent Vivier 68382d71afSLaurent Vivier /* 69382d71afSLaurent Vivier * Linux/m68k Architectures (BI_MACHTYPE) 70382d71afSLaurent Vivier */ 71382d71afSLaurent Vivier 72382d71afSLaurent Vivier #define MACH_AMIGA 1 73382d71afSLaurent Vivier #define MACH_ATARI 2 74382d71afSLaurent Vivier #define MACH_MAC 3 75382d71afSLaurent Vivier #define MACH_APOLLO 4 76382d71afSLaurent Vivier #define MACH_SUN3 5 77382d71afSLaurent Vivier #define MACH_MVME147 6 78382d71afSLaurent Vivier #define MACH_MVME16x 7 79382d71afSLaurent Vivier #define MACH_BVME6000 8 80382d71afSLaurent Vivier #define MACH_HP300 9 81382d71afSLaurent Vivier #define MACH_Q40 10 82382d71afSLaurent Vivier #define MACH_SUN3X 11 83382d71afSLaurent Vivier #define MACH_M54XX 12 84382d71afSLaurent Vivier #define MACH_M5441X 13 85382d71afSLaurent Vivier #define MACH_VIRT 14 86382d71afSLaurent Vivier 87382d71afSLaurent Vivier 88382d71afSLaurent Vivier /* 89382d71afSLaurent Vivier * CPU, FPU and MMU types (BI_CPUTYPE, BI_FPUTYPE, BI_MMUTYPE) 90382d71afSLaurent Vivier * 91382d71afSLaurent Vivier * Note: we may rely on the following equalities: 92382d71afSLaurent Vivier * 93382d71afSLaurent Vivier * CPU_68020 == MMU_68851 94382d71afSLaurent Vivier * CPU_68030 == MMU_68030 95382d71afSLaurent Vivier * CPU_68040 == FPU_68040 == MMU_68040 96382d71afSLaurent Vivier * CPU_68060 == FPU_68060 == MMU_68060 97382d71afSLaurent Vivier */ 98382d71afSLaurent Vivier 99382d71afSLaurent Vivier #define CPUB_68020 0 100382d71afSLaurent Vivier #define CPUB_68030 1 101382d71afSLaurent Vivier #define CPUB_68040 2 102382d71afSLaurent Vivier #define CPUB_68060 3 103382d71afSLaurent Vivier #define CPUB_COLDFIRE 4 104382d71afSLaurent Vivier 105382d71afSLaurent Vivier #define CPU_68020 (1 << CPUB_68020) 106382d71afSLaurent Vivier #define CPU_68030 (1 << CPUB_68030) 107382d71afSLaurent Vivier #define CPU_68040 (1 << CPUB_68040) 108382d71afSLaurent Vivier #define CPU_68060 (1 << CPUB_68060) 109382d71afSLaurent Vivier #define CPU_COLDFIRE (1 << CPUB_COLDFIRE) 110382d71afSLaurent Vivier 111382d71afSLaurent Vivier #define FPUB_68881 0 112382d71afSLaurent Vivier #define FPUB_68882 1 113382d71afSLaurent Vivier #define FPUB_68040 2 /* Internal FPU */ 114382d71afSLaurent Vivier #define FPUB_68060 3 /* Internal FPU */ 115382d71afSLaurent Vivier #define FPUB_SUNFPA 4 /* Sun-3 FPA */ 116382d71afSLaurent Vivier #define FPUB_COLDFIRE 5 /* ColdFire FPU */ 117382d71afSLaurent Vivier 118382d71afSLaurent Vivier #define FPU_68881 (1 << FPUB_68881) 119382d71afSLaurent Vivier #define FPU_68882 (1 << FPUB_68882) 120382d71afSLaurent Vivier #define FPU_68040 (1 << FPUB_68040) 121382d71afSLaurent Vivier #define FPU_68060 (1 << FPUB_68060) 122382d71afSLaurent Vivier #define FPU_SUNFPA (1 << FPUB_SUNFPA) 123382d71afSLaurent Vivier #define FPU_COLDFIRE (1 << FPUB_COLDFIRE) 124382d71afSLaurent Vivier 125382d71afSLaurent Vivier #define MMUB_68851 0 126382d71afSLaurent Vivier #define MMUB_68030 1 /* Internal MMU */ 127382d71afSLaurent Vivier #define MMUB_68040 2 /* Internal MMU */ 128382d71afSLaurent Vivier #define MMUB_68060 3 /* Internal MMU */ 129382d71afSLaurent Vivier #define MMUB_APOLLO 4 /* Custom Apollo */ 130382d71afSLaurent Vivier #define MMUB_SUN3 5 /* Custom Sun-3 */ 131382d71afSLaurent Vivier #define MMUB_COLDFIRE 6 /* Internal MMU */ 132382d71afSLaurent Vivier 133382d71afSLaurent Vivier #define MMU_68851 (1 << MMUB_68851) 134382d71afSLaurent Vivier #define MMU_68030 (1 << MMUB_68030) 135382d71afSLaurent Vivier #define MMU_68040 (1 << MMUB_68040) 136382d71afSLaurent Vivier #define MMU_68060 (1 << MMUB_68060) 137382d71afSLaurent Vivier #define MMU_SUN3 (1 << MMUB_SUN3) 138382d71afSLaurent Vivier #define MMU_APOLLO (1 << MMUB_APOLLO) 139382d71afSLaurent Vivier #define MMU_COLDFIRE (1 << MMUB_COLDFIRE) 140382d71afSLaurent Vivier 141382d71afSLaurent Vivier 142382d71afSLaurent Vivier /* 143382d71afSLaurent Vivier * Stuff for bootinfo interface versioning 144382d71afSLaurent Vivier * 145382d71afSLaurent Vivier * At the start of kernel code, a 'struct bootversion' is located. 146382d71afSLaurent Vivier * bootstrap checks for a matching version of the interface before booting 147382d71afSLaurent Vivier * a kernel, to avoid user confusion if kernel and bootstrap don't work 148382d71afSLaurent Vivier * together :-) 149382d71afSLaurent Vivier * 150382d71afSLaurent Vivier * If incompatible changes are made to the bootinfo interface, the major 151382d71afSLaurent Vivier * number below should be stepped (and the minor reset to 0) for the 152382d71afSLaurent Vivier * appropriate machine. If a change is backward-compatible, the minor 153382d71afSLaurent Vivier * should be stepped. "Backwards-compatible" means that booting will work, 154382d71afSLaurent Vivier * but certain features may not. 155382d71afSLaurent Vivier */ 156382d71afSLaurent Vivier 157382d71afSLaurent Vivier #define BOOTINFOV_MAGIC 0x4249561A /* 'BIV^Z' */ 158382d71afSLaurent Vivier #define MK_BI_VERSION(major, minor) (((major) << 16) + (minor)) 159382d71afSLaurent Vivier #define BI_VERSION_MAJOR(v) (((v) >> 16) & 0xffff) 160382d71afSLaurent Vivier #define BI_VERSION_MINOR(v) ((v) & 0xffff) 161382d71afSLaurent Vivier 162382d71afSLaurent Vivier struct bootversion { 163382d71afSLaurent Vivier uint16_t branch; 164382d71afSLaurent Vivier uint32_t magic; 165382d71afSLaurent Vivier struct { 166382d71afSLaurent Vivier uint32_t machtype; 167382d71afSLaurent Vivier uint32_t version; 168382d71afSLaurent Vivier } machversions[0]; 169382d71afSLaurent Vivier } QEMU_PACKED; 170382d71afSLaurent Vivier 171382d71afSLaurent Vivier 172382d71afSLaurent Vivier #endif /* _UAPI_ASM_M68K_BOOTINFO_H */ 173