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1de1fa40 JCPV |
1 | /* |
2 | * (C) Copyright 2008 | |
3 | * Jean-Christophe PLAGNIOL-VILLARD <jcplagniol@jcrosoft.com> | |
4 | * | |
5 | * See file CREDITS for list of people who contributed to this | |
6 | * project. | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation; either version 2 of the License, or | |
11 | * (at your option) any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to the Free Software | |
20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
21 | * | |
22 | */ | |
23 | ||
24 | #include <common.h> | |
25 | #include <command.h> | |
26 | #include <image.h> | |
27 | #include <asm/byteorder.h> | |
28 | #include <asm/addrspace.h> | |
29 | ||
30 | DECLARE_GLOBAL_DATA_PTR; | |
31 | ||
32 | int do_bootm_linux(int flag, int argc, char *argv[], bootm_headers_t *images) | |
33 | { | |
34 | void (*theKernel) (int, char **, char **, int *); | |
35 | char *bootargs = getenv ("bootargs"); | |
36 | char *start; | |
37 | uint len; | |
38 | ||
39 | /* find kernel entry point */ | |
40 | theKernel = (void (*)(int, char **, char **, int *))images->ep; | |
41 | ||
42 | show_boot_progress (15); | |
43 | ||
44 | debug ("## Transferring control to Linux (at address %08lx) ...\n", | |
45 | (ulong) theKernel); | |
46 | ||
47 | gd->bd->bi_boot_params = gd->bd->bi_memstart + (16 << 20) - 256; | |
48 | debug ("%-12s= 0x%08lX\n", "boot_params", (ulong)gd->bd->bi_boot_params); | |
49 | ||
50 | /* set Magic */ | |
51 | *(int32_t *)(gd->bd->bi_boot_params - 4) = 0x12345678; | |
52 | /* set ram_size */ | |
53 | *(int32_t *)(gd->bd->bi_boot_params - 8) = gd->ram_size; | |
54 | ||
55 | start = (char*)gd->bd->bi_boot_params; | |
56 | ||
57 | len = strlen(bootargs); | |
58 | ||
59 | strncpy(start, bootargs, len + 1); | |
60 | ||
61 | start += len; | |
62 | ||
63 | len = images->rd_end - images->rd_start; | |
64 | if (len > 0) { | |
65 | start += sprintf(start," rd_start=0x%08X rd_size=0x%0X", | |
66 | (uint) UNCACHED_SDRAM (images->rd_start), | |
67 | (uint) len); | |
68 | } | |
69 | ||
70 | /* we assume that the kernel is in place */ | |
71 | printf ("\nStarting kernel ...\n\n"); | |
72 | ||
73 | theKernel (0, NULL, NULL, 0); | |
74 | /* does not return */ | |
75 | return 1; | |
76 | } |