diff options
Diffstat (limited to 'arch/m68k/include/uapi/asm/bootinfo.h')
-rw-r--r-- | arch/m68k/include/uapi/asm/bootinfo.h | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/arch/m68k/include/uapi/asm/bootinfo.h b/arch/m68k/include/uapi/asm/bootinfo.h new file mode 100644 index 000000000000..74a6fae2a5bf --- /dev/null +++ b/arch/m68k/include/uapi/asm/bootinfo.h | |||
@@ -0,0 +1,95 @@ | |||
1 | /* | ||
2 | * asm/bootinfo.h -- Definition of the Linux/m68k boot information structure | ||
3 | * | ||
4 | * Copyright 1992 by Greg Harp | ||
5 | * | ||
6 | * This file is subject to the terms and conditions of the GNU General Public | ||
7 | * License. See the file COPYING in the main directory of this archive | ||
8 | * for more details. | ||
9 | */ | ||
10 | |||
11 | #ifndef _UAPI_ASM_M68K_BOOTINFO_H | ||
12 | #define _UAPI_ASM_M68K_BOOTINFO_H | ||
13 | |||
14 | #include <linux/types.h> | ||
15 | |||
16 | |||
17 | #ifndef __ASSEMBLY__ | ||
18 | |||
19 | /* | ||
20 | * Bootinfo definitions | ||
21 | * | ||
22 | * This is an easily parsable and extendable structure containing all | ||
23 | * information to be passed from the bootstrap to the kernel. | ||
24 | * | ||
25 | * This way I hope to keep all future changes back/forewards compatible. | ||
26 | * Thus, keep your fingers crossed... | ||
27 | * | ||
28 | * This structure is copied right after the kernel by the bootstrap | ||
29 | * routine. | ||
30 | */ | ||
31 | |||
32 | struct bi_record { | ||
33 | unsigned short tag; /* tag ID */ | ||
34 | unsigned short size; /* size of record (in bytes) */ | ||
35 | unsigned long data[0]; /* data */ | ||
36 | }; | ||
37 | |||
38 | #endif /* __ASSEMBLY__ */ | ||
39 | |||
40 | |||
41 | /* | ||
42 | * Tag Definitions | ||
43 | * | ||
44 | * Machine independent tags start counting from 0x0000 | ||
45 | * Machine dependent tags start counting from 0x8000 | ||
46 | */ | ||
47 | |||
48 | #define BI_LAST 0x0000 /* last record (sentinel) */ | ||
49 | #define BI_MACHTYPE 0x0001 /* machine type (u_long) */ | ||
50 | #define BI_CPUTYPE 0x0002 /* cpu type (u_long) */ | ||
51 | #define BI_FPUTYPE 0x0003 /* fpu type (u_long) */ | ||
52 | #define BI_MMUTYPE 0x0004 /* mmu type (u_long) */ | ||
53 | #define BI_MEMCHUNK 0x0005 /* memory chunk address and size */ | ||
54 | /* (struct mem_info) */ | ||
55 | #define BI_RAMDISK 0x0006 /* ramdisk address and size */ | ||
56 | /* (struct mem_info) */ | ||
57 | #define BI_COMMAND_LINE 0x0007 /* kernel command line parameters */ | ||
58 | /* (string) */ | ||
59 | |||
60 | |||
61 | /* | ||
62 | * Stuff for bootinfo interface versioning | ||
63 | * | ||
64 | * At the start of kernel code, a 'struct bootversion' is located. | ||
65 | * bootstrap checks for a matching version of the interface before booting | ||
66 | * a kernel, to avoid user confusion if kernel and bootstrap don't work | ||
67 | * together :-) | ||
68 | * | ||
69 | * If incompatible changes are made to the bootinfo interface, the major | ||
70 | * number below should be stepped (and the minor reset to 0) for the | ||
71 | * appropriate machine. If a change is backward-compatible, the minor | ||
72 | * should be stepped. "Backwards-compatible" means that booting will work, | ||
73 | * but certain features may not. | ||
74 | */ | ||
75 | |||
76 | #define BOOTINFOV_MAGIC 0x4249561A /* 'BIV^Z' */ | ||
77 | #define MK_BI_VERSION(major, minor) (((major) << 16) + (minor)) | ||
78 | #define BI_VERSION_MAJOR(v) (((v) >> 16) & 0xffff) | ||
79 | #define BI_VERSION_MINOR(v) ((v) & 0xffff) | ||
80 | |||
81 | #ifndef __ASSEMBLY__ | ||
82 | |||
83 | struct bootversion { | ||
84 | unsigned short branch; | ||
85 | unsigned long magic; | ||
86 | struct { | ||
87 | unsigned long machtype; | ||
88 | unsigned long version; | ||
89 | } machversions[0]; | ||
90 | } __packed; | ||
91 | |||
92 | #endif /* __ASSEMBLY__ */ | ||
93 | |||
94 | |||
95 | #endif /* _UAPI_ASM_M68K_BOOTINFO_H */ | ||