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 */