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Jean-Christophe PLAGNIOL-VILLARD1de1fa42008-09-08 20:54:39 +02001/*
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
30DECLARE_GLOBAL_DATA_PTR;
31
32int 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}