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/*
* (C) Copyright 2003
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* 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 <asm/byteorder.h>
/* The SH kernel reads arguments from the empty zero page at location
* 0 at the start of SDRAM. The following are copied from
* arch/sh/kernel/setup.c and may require tweaking if the kernel sources
* change.
*/
#define PARAM ((unsigned char *)CFG_SDRAM_BASE + 0x1000)
#define MOUNT_ROOT_RDONLY (*(unsigned long *) (PARAM+0x000))
#define RAMDISK_FLAGS (*(unsigned long *) (PARAM+0x004))
#define ORIG_ROOT_DEV (*(unsigned long *) (PARAM+0x008))
#define LOADER_TYPE (*(unsigned long *) (PARAM+0x00c))
#define INITRD_START (*(unsigned long *) (PARAM+0x010))
#define INITRD_SIZE (*(unsigned long *) (PARAM+0x014))
/* ... */
#define COMMAND_LINE ((char *) (PARAM+0x100))
#define RAMDISK_IMAGE_START_MASK 0x07FF
extern int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
#ifdef CFG_DEBUG
static void hexdump (unsigned char *buf, int len)
{
int i;
for (i = 0; i < len; i++) {
if ((i % 16) == 0)
printf ("%s%08x: ", i ? "\n" : "", (unsigned int) &buf[i]);
printf ("%02x ", buf[i]);
}
printf ("\n");
}
#endif
void do_bootm_linux (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[],
bootm_headers_t *images)
{
ulong ep = 0;
char *bootargs = getenv("bootargs");
/* find kernel entry point */
if (images->legacy_hdr_valid) {
ep = image_get_ep (&images->legacy_hdr_os_copy);
#if defined(CONFIG_FIT)
} else if (images->fit_uname_os) {
int ret = fit_image_get_entry (images->fit_hdr_os,
images->fit_noffset_os, &ep);
if (ret) {
puts ("Can't get entry point property!\n");
goto error;
}
#endif
} else {
puts ("Could not find kernel entry point!\n");
goto error;
}
void (*kernel) (void) = (void (*)(void))ep;
/* Setup parameters */
memset(PARAM, 0, 0x1000); /* Clear zero page */
strcpy(COMMAND_LINE, bootargs);
kernel();
/* does not return */
return;
error:
do_reset (cmdtp, flag, argc, argv);
return;
}
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