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