]>
git.ipfire.org Git - people/ms/u-boot.git/blob - arch/sh/lib/bootm.c
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 * (c) Copyright 2008 Nobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com>
6 * (c) Copyright 2008 Renesas Solutions Corp.
8 * See file CREDITS for list of people who contributed to this
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
29 #include <asm/byteorder.h>
31 #ifdef CONFIG_SYS_DEBUG
32 static void hexdump(unsigned char *buf
, int len
)
36 for (i
= 0; i
< len
; i
++) {
38 printf("%s%08x: ", i
? "\n" : "",
39 (unsigned int)&buf
[i
]);
40 printf("%02x ", buf
[i
]);
46 #define MOUNT_ROOT_RDONLY 0x000
47 #define RAMDISK_FLAGS 0x004
48 #define ORIG_ROOT_DEV 0x008
49 #define LOADER_TYPE 0x00c
50 #define INITRD_START 0x010
51 #define INITRD_SIZE 0x014
52 #define COMMAND_LINE 0x100
54 #define RD_PROMPT (1<<15)
55 #define RD_DOLOAD (1<<14)
56 #define CMD_ARG_RD_PROMPT "prompt_ramdisk="
57 #define CMD_ARG_RD_DOLOAD "load_ramdisk="
59 #ifdef CONFIG_SH_SDRAM_OFFSET
60 #define GET_INITRD_START(initrd, linux) (initrd - linux + CONFIG_SH_SDRAM_OFFSET)
62 #define GET_INITRD_START(initrd, linux) (initrd - linux)
65 static void set_sh_linux_param(unsigned long param_addr
, unsigned long data
)
67 *(unsigned long *)(param_addr
) = data
;
70 static unsigned long sh_check_cmd_arg(char *cmdline
, char *key
, int base
)
72 unsigned long val
= 0;
73 char *p
= strstr(cmdline
, key
);
76 val
= simple_strtol(p
, NULL
, base
);
81 int do_bootm_linux(int flag
, int argc
, char * const argv
[], bootm_headers_t
*images
)
83 /* Linux kernel load address */
84 void (*kernel
) (void) = (void (*)(void))images
->ep
;
87 = (unsigned char *)image_get_load(images
->legacy_hdr_os
);
88 /* Linux kernel command line */
89 char *cmdline
= (char *)param
+ COMMAND_LINE
;
91 unsigned long size
= images
->ep
- (unsigned long)param
;
92 char *bootargs
= getenv("bootargs");
94 if ((flag
!= 0) && (flag
!= BOOTM_STATE_OS_GO
))
97 /* Setup parameters */
98 memset(param
, 0, size
); /* Clear zero page */
100 /* Set commandline */
101 strcpy(cmdline
, bootargs
);
103 sh_check_cmd_arg(bootargs
, CMD_ARG_RD_DOLOAD
, 10);
105 if (images
->rd_start
|| images
->rd_end
) {
106 unsigned long ramdisk_flags
= 0;
107 int val
= sh_check_cmd_arg(bootargs
, CMD_ARG_RD_PROMPT
, 10);
109 ramdisk_flags
|= RD_PROMPT
;
111 ramdisk_flags
&= ~RD_PROMPT
;
113 val
= sh_check_cmd_arg(bootargs
, CMD_ARG_RD_DOLOAD
, 10);
115 ramdisk_flags
|= RD_DOLOAD
;
117 ramdisk_flags
&= ~RD_DOLOAD
;
119 set_sh_linux_param((unsigned long)param
+ MOUNT_ROOT_RDONLY
, 0x0001);
120 set_sh_linux_param((unsigned long)param
+ RAMDISK_FLAGS
, ramdisk_flags
);
121 set_sh_linux_param((unsigned long)param
+ ORIG_ROOT_DEV
, 0x0200);
122 set_sh_linux_param((unsigned long)param
+ LOADER_TYPE
, 0x0001);
123 set_sh_linux_param((unsigned long)param
+ INITRD_START
,
124 GET_INITRD_START(images
->rd_start
, CONFIG_SYS_SDRAM_BASE
));
125 set_sh_linux_param((unsigned long)param
+ INITRD_SIZE
,
126 images
->rd_end
- images
->rd_start
);
131 /* does not return */