693869a66e
Following a change on the kernel side (see link), pass BI_RNG_SEED instead of BI_VIRT_RNG_SEED. This should have no impact on compatibility, as there will simply be no effect if it's an old kernel, which is how things have always been. We then use this as an opportunity to add this to q800, since now we can, which is a nice improvement. Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Laurent Vivier <laurent@vivier.eu> Link: https://lore.kernel.org/lkml/20220923170340.4099226-3-Jason@zx2c4.com/ Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> Message-Id: <20220926113900.1256630-1-Jason@zx2c4.com> [lv: s/^I/ /g] Signed-off-by: Laurent Vivier <laurent@vivier.eu>
173 lines
5.0 KiB
C
173 lines
5.0 KiB
C
/* 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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/*
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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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uint16_t tag; /* tag ID */
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uint16_t size; /* size of record (in bytes) */
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uint32_t data[0]; /* data */
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};
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struct mem_info {
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uint32_t addr; /* physical address of memory chunk */
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uint32_t size; /* length of memory chunk (in bytes) */
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};
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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 (uint32_t) */
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#define BI_CPUTYPE 0x0002 /* cpu type (uint32_t) */
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#define BI_FPUTYPE 0x0003 /* fpu type (uint32_t) */
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#define BI_MMUTYPE 0x0004 /* mmu type (uint32_t) */
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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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* A random seed used to initialize the RNG. Record format:
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*
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* - length [ 2 bytes, 16-bit big endian ]
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* - seed data [ `length` bytes, padded to preserve 4-byte struct alignment ]
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*/
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#define BI_RNG_SEED 0x0008
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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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#define MACH_VIRT 14
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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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struct bootversion {
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uint16_t branch;
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uint32_t magic;
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struct {
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uint32_t machtype;
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uint32_t version;
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} machversions[0];
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} QEMU_PACKED;
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#endif /* _UAPI_ASM_M68K_BOOTINFO_H */
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