mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-06 19:26:16 +09:00
cb1c489690
Before new uImage code was merged, bootm code allowed for the kernel image to get overwritten during decompresion. new uImage introduced a check for image overwrites and refused to boot the image that got overwritten. This patch restores the old behavior. It also adds a warning when the image overwriten is a multi-image file, because in such case accessing componentes other than the first one will fail. Signed-off-by: Marian Balakowicz <m8@semihalf.com>
102 lines
2.8 KiB
C
102 lines
2.8 KiB
C
/*
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* (C) Copyright 2003
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#include <common.h>
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#include <command.h>
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#include <asm/byteorder.h>
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/* The SH kernel reads arguments from the empty zero page at location
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* 0 at the start of SDRAM. The following are copied from
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* arch/sh/kernel/setup.c and may require tweaking if the kernel sources
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* change.
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*/
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#define PARAM ((unsigned char *)CFG_SDRAM_BASE + 0x1000)
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#define MOUNT_ROOT_RDONLY (*(unsigned long *) (PARAM+0x000))
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#define RAMDISK_FLAGS (*(unsigned long *) (PARAM+0x004))
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#define ORIG_ROOT_DEV (*(unsigned long *) (PARAM+0x008))
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#define LOADER_TYPE (*(unsigned long *) (PARAM+0x00c))
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#define INITRD_START (*(unsigned long *) (PARAM+0x010))
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#define INITRD_SIZE (*(unsigned long *) (PARAM+0x014))
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/* ... */
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#define COMMAND_LINE ((char *) (PARAM+0x100))
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#define RAMDISK_IMAGE_START_MASK 0x07FF
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extern int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
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#ifdef CFG_DEBUG
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static void hexdump (unsigned char *buf, int len)
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{
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int i;
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for (i = 0; i < len; i++) {
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if ((i % 16) == 0)
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printf ("%s%08x: ", i ? "\n" : "", (unsigned int) &buf[i]);
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printf ("%02x ", buf[i]);
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}
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printf ("\n");
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}
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#endif
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void do_bootm_linux (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[],
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bootm_headers_t *images)
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{
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ulong ep = 0;
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char *bootargs = getenv("bootargs");
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/* find kernel entry point */
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if (images->legacy_hdr_valid) {
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ep = image_get_ep (&images->legacy_hdr_os_copy);
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#if defined(CONFIG_FIT)
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} else if (images->fit_uname_os) {
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int ret = fit_image_get_entry (images->fit_hdr_os,
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images->fit_noffset_os, &ep);
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if (ret) {
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puts ("Can't get entry point property!\n");
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goto error;
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}
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#endif
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} else {
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puts ("Could not find kernel entry point!\n");
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goto error;
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}
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void (*kernel) (void) = (void (*)(void))ep;
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if (!images->autostart)
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return ;
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/* Setup parameters */
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memset(PARAM, 0, 0x1000); /* Clear zero page */
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strcpy(COMMAND_LINE, bootargs);
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kernel();
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/* does not return */
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return;
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error:
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if (images->autostart)
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do_reset (cmdtp, flag, argc, argv);
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return;
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}
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