blob: 970987d8962b7255c1707bf48dff571483a22126 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
|
/* $Id$ */
/*
* Copyright (c) 1994, 1995, 1996 Carnegie-Mellon University.
* All rights reserved.
*
* Author: Chris G. Demetriou
*
* Permission to use, copy, modify and distribute this software and
* its documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie the
* rights to redistribute these changes.
*/
/*
* The boot program passes a pointer (in the boot environment virtual
* address address space; "BEVA") to a bootinfo to the kernel using
* the following convention:
*
* a0 contains first free page frame number
* a1 contains page number of current level 1 page table
* if a2 contains BOOTINFO_MAGIC and a4 is nonzero:
* a3 contains pointer (BEVA) to bootinfo
* a4 contains bootinfo version number
* if a2 contains BOOTINFO_MAGIC and a4 contains 0 (backward compat):
* a3 contains pointer (BEVA) to bootinfo version
* (u_long), then the bootinfo
*/
#define BOOTINFO_MAGIC 0xdeadbeeffeedface
struct bootinfo_v1 {
u_long ssym; /* 0: start of kernel sym table */
u_long esym; /* 8: end of kernel sym table */
char boot_flags[64]; /* 16: boot flags */
char booted_kernel[64]; /* 80: name of booted kernel */
void *hwrpb; /* 144: hwrpb pointer (BEVA) */
u_long hwrpbsize; /* 152: size of hwrpb data */
int (*cngetc) __P((void)); /* 160: console getc pointer */
void (*cnputc) __P((int)); /* 168: console putc pointer */
void (*cnpollc) __P((int)); /* 176: console pollc pointer */
u_long pad[9]; /* 184: rsvd for future use */
/* 256: total size */
};
/*
* Kernel-internal structure used to hold important bits of boot
* information. NOT to be used by boot blocks.
*
* Note that not all of the fields from the bootinfo struct(s)
* passed by the boot blocks aren't here (because they're not currently
* used by the kernel!). Fields here which aren't supplied by the
* bootinfo structure passed by the boot blocks are supposed to be
* filled in at startup with sane contents.
*/
struct bootinfo_kernel {
u_long ssym; /* start of syms */
u_long esym; /* end of syms */
u_long hwrpb_phys; /* hwrpb physical address */
u_long hwrpb_size; /* size of hwrpb data */
char boot_flags[64]; /* boot flags */
char booted_kernel[64]; /* name of booted kernel */
char booted_dev[64]; /* name of booted device */
};
extern struct bootinfo_kernel bootinfo;
|