/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ /* * asm/bootinfo.h -- Definition of the Linux/m68k boot information structure * * Copyright 1992 by Greg Harp * * 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. */ #ifndef _UAPI_ASM_M68K_BOOTINFO_H #define _UAPI_ASM_M68K_BOOTINFO_H #include <linux/types.h> #ifndef __ASSEMBLER__ /* * Bootinfo definitions * * This is an easily parsable and extendable structure containing all * information to be passed from the bootstrap to the kernel. * * This way I hope to keep all future changes back/forewards compatible. * Thus, keep your fingers crossed... * * This structure is copied right after the kernel by the bootstrap * routine. */ struct bi_record { __be16 tag; /* tag ID */ __be16 size; /* size of record (in bytes) */ __be32 data[]; /* data */ }; struct mem_info { __be32 addr; /* physical address of memory chunk */ __be32 size; /* length of memory chunk (in bytes) */ }; #endif /* __ASSEMBLER__ */ /* * Tag Definitions * * Machine independent tags start counting from 0x0000 * Machine dependent tags start counting from 0x8000 */ #define BI_LAST 0x0000 /* last record (sentinel) */ #define BI_MACHTYPE 0x0001 /* machine type (__be32) */ #define BI_CPUTYPE 0x0002 /* cpu type (__be32) */ #define BI_FPUTYPE 0x0003 /* fpu type (__be32) */ #define BI_MMUTYPE 0x0004 /* mmu type (__be32) */ #define BI_MEMCHUNK 0x0005 /* memory chunk address and size */ /* (struct mem_info) */ #define BI_RAMDISK 0x0006 /* ramdisk address and size */ /* (struct mem_info) */ #define BI_COMMAND_LINE 0x0007 /* kernel command line parameters */ /* (string) */ /* * A random seed used to initialize the RNG. Record format: * * - length [ 2 bytes, 16-bit big endian ] * - seed data [ `length` bytes, padded to preserve 4-byte struct alignment ] */ #define BI_RNG_SEED 0x0008 /* * Linux/m68k Architectures (BI_MACHTYPE) */ #define MACH_AMIGA 1 #define MACH_ATARI 2 #define MACH_MAC 3 #define MACH_APOLLO 4 #define MACH_SUN3 5 #define MACH_MVME147 6 #define MACH_MVME16x 7 #define MACH_BVME6000 8 #define MACH_HP300 9 #define MACH_Q40 10 #define MACH_SUN3X 11 #define MACH_M54XX 12 #define MACH_M5441X 13 #define MACH_VIRT 14 /* * CPU, FPU and MMU types (BI_CPUTYPE, BI_FPUTYPE, BI_MMUTYPE) * * Note: we may rely on the following equalities: * * CPU_68020 == MMU_68851 * CPU_68030 == MMU_68030 * CPU_68040 == FPU_68040 == MMU_68040 * CPU_68060 == FPU_68060 == MMU_68060 */ #define CPUB_68020 0 #define CPUB_68030 1 #define CPUB_68040 2 #define CPUB_68060 3 #define CPUB_COLDFIRE 4 #define CPU_68020 (1 << CPUB_68020) #define CPU_68030 (1 << CPUB_68030) #define CPU_68040 (1 << CPUB_68040) #define CPU_68060 (1 << CPUB_68060) #define CPU_COLDFIRE (1 << CPUB_COLDFIRE) #define FPUB_68881 0 #define FPUB_68882 1 #define FPUB_68040 2 /* Internal FPU */ #define FPUB_68060 3 /* Internal FPU */ #define FPUB_SUNFPA 4 /* Sun-3 FPA */ #define FPUB_COLDFIRE 5 /* ColdFire FPU */ #define FPU_68881 (1 << FPUB_68881) #define FPU_68882 (1 << FPUB_68882) #define FPU_68040 (1 << FPUB_68040) #define FPU_68060 (1 << FPUB_68060) #define FPU_SUNFPA (1 << FPUB_SUNFPA) #define FPU_COLDFIRE (1 << FPUB_COLDFIRE) #define MMUB_68851 0 #define MMUB_68030 1 /* Internal MMU */ #define MMUB_68040 2 /* Internal MMU */ #define MMUB_68060 3 /* Internal MMU */ #define MMUB_APOLLO 4 /* Custom Apollo */ #define MMUB_SUN3 5 /* Custom Sun-3 */ #define MMUB_COLDFIRE 6 /* Internal MMU */ #define MMU_68851 (1 << MMUB_68851) #define MMU_68030 (1 << MMUB_68030) #define MMU_68040 (1 << MMUB_68040) #define MMU_68060 (1 << MMUB_68060) #define MMU_SUN3 (1 << MMUB_SUN3) #define MMU_APOLLO (1 << MMUB_APOLLO) #define MMU_COLDFIRE (1 << MMUB_COLDFIRE) /* * Stuff for bootinfo interface versioning * * At the start of kernel code, a 'struct bootversion' is located. * bootstrap checks for a matching version of the interface before booting * a kernel, to avoid user confusion if kernel and bootstrap don't work * together :-) * * If incompatible changes are made to the bootinfo interface, the major * number below should be stepped (and the minor reset to 0) for the * appropriate machine. If a change is backward-compatible, the minor * should be stepped. "Backwards-compatible" means that booting will work, * but certain features may not. */ #define BOOTINFOV_MAGIC 0x4249561A /* 'BIV^Z' */ #define MK_BI_VERSION(major, minor) (((major) << 16) + (minor)) #define BI_VERSION_MAJOR(v) (((v) >> 16) & 0xffff) #define BI_VERSION_MINOR(v) ((v) & 0xffff) #ifndef __ASSEMBLER__ struct bootversion { __be16 branch; __be32 magic; struct { __be32 machtype; __be32 version; } machversions[]; } __packed; #endif /* __ASSEMBLER__ */ #endif /* _UAPI_ASM_M68K_BOOTINFO_H */
