summaryrefslogtreecommitdiff
path: root/lib_microblaze/bootm.c
blob: a4fce5a73c90aaa07a3911025dd04fa0e05d060d (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
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
/*
 * (C) Copyright 2007 Michal Simek
 * (C) Copyright 2004 Atmark Techno, Inc.
 *
 * Michal  SIMEK <monstr@monstr.eu>
 * Yasushi SHOJI <yashi@atmark-techno.com>
 *
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of
 * the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 */

#include <common.h>
#include <command.h>
#include <image.h>
#include <zlib.h>
#include <asm/byteorder.h>

DECLARE_GLOBAL_DATA_PTR;

extern int do_reset (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[]);

void do_bootm_linux (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[],
		     image_header_t *hdr, int verify)
{
	int i;
	ulong checksum;

	ulong rd_data, rd_len;
	ulong initrd_start, initrd_end;
	image_header_t *rd_hdr;

	/* First parameter is mapped to $r5 for kernel boot args */
	void (*theKernel) (char *);
	char *commandline = getenv ("bootargs");

	theKernel = (void (*)(char *))image_get_ep (hdr);

	/* Check if there is an initrd image */
	if (argc >= 3) {
		show_boot_progress (9);

		rd_hdr = (image_header_t *)simple_strtoul (argv[2], NULL, 16);
		printf ("## Loading Ramdisk Image at %08lx ...\n", rd_hdr);

		if (!image_check_magic (rd_hdr)) {
			printf ("Bad Magic Number\n");
			show_boot_progress (-10);
			do_reset (cmdtp, flag, argc, argv);
		}

		if (!image_check_magic (rd_hdr)) {
			printf ("Bad Header Checksum\n");
			show_boot_progress (-11);
			do_reset (cmdtp, flag, argc, argv);
		}

		show_boot_progress (10);
		print_image_hdr (rd_hdr);

		rd_data = image_get_data (rd_hdr);
		rd_en = image_get_data_size (rd_hdr);

		if (verify) {
			printf ("   Verifying Checksum ... ");
			if (!image_check_dcrc (rd_hdr)) {
				printf ("Bad Data CRC\n");
				show_boot_progress (-12);
				do_reset (cmdtp, flag, argc, argv);
			}
			printf ("OK\n");
		}

		show_boot_progress (11);

		if (!image_check_os (rd_hdr, IH_OS_LINUX) ||
		    !image_check_arch (rd_hdr, IH_ARCH_MICROBLAZE) ||
		    !image_check_type (rd_hdr, IH_TYPE_RAMDISK)) {
			printf ("No Linux Microblaze Ramdisk Image\n");
			show_boot_progress (-13);
			do_reset (cmdtp, flag, argc, argv);
		}

		/*
		 * Now check if we have a multifile image
		 */
	} else if (image_check_type (hdr, IH_TYPE_MULTI)) {
		/*
		 * Get second entry data start address and len
		 */
		show_boot_progress (13);
		image_multi_getimg (hdr, 1, &rd_data, &rd_len);
	} else {
		/*
		 * no initrd image
		 */
		show_boot_progress (14);

		rd_data = rd_len = 0;
	}

#ifdef  DEBUG
	if (!rd_data) {
		printf ("No initrd\n");
	}
#endif

	if (rd_data) {
		initrd_start = rd_data;
		initrd_end = initrd_start + rd_len;
	} else {
		initrd_start = 0;
		initrd_end = 0;
	}

	show_boot_progress (15);

#ifdef DEBUG
	printf ("## Transferring control to Linux (at address %08lx) ...\n",
		(ulong) theKernel);
#endif

	theKernel (commandline);
}