diff options
Diffstat (limited to 'arch/ppc/boot/openfirmware/chrpmain.c')
-rw-r--r-- | arch/ppc/boot/openfirmware/chrpmain.c | 101 |
1 files changed, 0 insertions, 101 deletions
diff --git a/arch/ppc/boot/openfirmware/chrpmain.c b/arch/ppc/boot/openfirmware/chrpmain.c deleted file mode 100644 index 245dbd9fc120..000000000000 --- a/arch/ppc/boot/openfirmware/chrpmain.c +++ /dev/null | |||
@@ -1,101 +0,0 @@ | |||
1 | /* | ||
2 | * Copyright (C) Paul Mackerras 1997. | ||
3 | * | ||
4 | * This program is free software; you can redistribute it and/or | ||
5 | * modify it under the terms of the GNU General Public License | ||
6 | * as published by the Free Software Foundation; either version | ||
7 | * 2 of the License, or (at your option) any later version. | ||
8 | */ | ||
9 | #include <linux/string.h> | ||
10 | #include "nonstdio.h" | ||
11 | #include "of1275.h" | ||
12 | #include <asm/processor.h> | ||
13 | #include <asm/page.h> | ||
14 | |||
15 | /* Passed from the linker */ | ||
16 | extern char __image_begin, __image_end; | ||
17 | extern char __ramdisk_begin, __ramdisk_end; | ||
18 | extern char _start, _end; | ||
19 | |||
20 | extern unsigned int heap_max; | ||
21 | extern void flush_cache(void *, unsigned long); | ||
22 | extern void gunzip(void *, int, unsigned char *, int *); | ||
23 | extern void make_bi_recs(unsigned long addr, char *name, unsigned int mach, | ||
24 | unsigned int progend); | ||
25 | |||
26 | char *avail_ram; | ||
27 | char *begin_avail, *end_avail; | ||
28 | char *avail_high; | ||
29 | |||
30 | #define RAM_START 0x00000000 | ||
31 | #define RAM_END (64<<20) | ||
32 | |||
33 | #define BOOT_START ((unsigned long)_start) | ||
34 | #define BOOT_END ((unsigned long)(_end + 0xFFF) & ~0xFFF) | ||
35 | |||
36 | #define RAM_FREE ((unsigned long)(_end+0x1000)&~0xFFF) | ||
37 | #define PROG_START 0x00010000 | ||
38 | #define PROG_SIZE 0x007f0000 /* 8MB */ | ||
39 | |||
40 | #define SCRATCH_SIZE (128 << 10) | ||
41 | |||
42 | static char scratch[SCRATCH_SIZE]; /* 128k of scratch space for gunzip */ | ||
43 | |||
44 | typedef void (*kernel_start_t)(int, int, void *, unsigned int, unsigned int); | ||
45 | |||
46 | void | ||
47 | boot(int a1, int a2, void *prom) | ||
48 | { | ||
49 | unsigned sa, len; | ||
50 | void *dst; | ||
51 | unsigned char *im; | ||
52 | unsigned int initrd_size, initrd_start; | ||
53 | |||
54 | printf("chrpboot starting: loaded at 0x%p\n\r", &_start); | ||
55 | |||
56 | initrd_size = &__ramdisk_end - &__ramdisk_begin; | ||
57 | if (initrd_size) { | ||
58 | initrd_start = (RAM_END - initrd_size) & ~0xFFF; | ||
59 | a1 = initrd_start; | ||
60 | a2 = initrd_size; | ||
61 | claim(initrd_start, RAM_END - initrd_start, 0); | ||
62 | printf("initial ramdisk moving 0x%x <- 0x%p (%x bytes)\n\r", | ||
63 | initrd_start, &__ramdisk_begin, initrd_size); | ||
64 | memcpy((char *)initrd_start, &__ramdisk_begin, initrd_size); | ||
65 | } else { | ||
66 | initrd_start = 0; | ||
67 | initrd_size = 0; | ||
68 | a2 = 0xdeadbeef; | ||
69 | } | ||
70 | |||
71 | im = &__image_begin; | ||
72 | len = &__image_end - &__image_begin; | ||
73 | /* claim 4MB starting at PROG_START */ | ||
74 | claim(PROG_START, PROG_SIZE - PROG_START, 0); | ||
75 | dst = (void *) PROG_START; | ||
76 | if (im[0] == 0x1f && im[1] == 0x8b) { | ||
77 | avail_ram = scratch; | ||
78 | begin_avail = avail_high = avail_ram; | ||
79 | end_avail = scratch + sizeof(scratch); | ||
80 | printf("gunzipping (0x%p <- 0x%p:0x%p)...", dst, im, im+len); | ||
81 | gunzip(dst, PROG_SIZE - PROG_START, im, &len); | ||
82 | printf("done %u bytes\n\r", len); | ||
83 | printf("%u bytes of heap consumed, max in use %u\n\r", | ||
84 | avail_high - begin_avail, heap_max); | ||
85 | } else { | ||
86 | memmove(dst, im, len); | ||
87 | } | ||
88 | |||
89 | flush_cache(dst, len); | ||
90 | make_bi_recs(((unsigned long) dst + len), "chrpboot", _MACH_chrp, | ||
91 | (PROG_START + PROG_SIZE)); | ||
92 | |||
93 | sa = PROG_START; | ||
94 | printf("start address = 0x%x\n\r", sa); | ||
95 | |||
96 | (*(kernel_start_t)sa)(a1, a2, prom, initrd_start, initrd_size); | ||
97 | |||
98 | printf("returned?\n\r"); | ||
99 | |||
100 | pause(); | ||
101 | } | ||