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https://github.com/brain-hackers/u-boot-brain
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d5934ad775
This patch adds framework for dual format images. Format detection is added and the bootm controll flow is updated to include cases for new FIT format uImages. When the legacy (image_header based) format is detected appropriate legacy specific handling is invoked. For the new (FIT based) format uImages dual boot framework has a minial support, that will only print out a corresponding debug messages. Implementation of the FIT specific handling will be added in following patches. Signed-off-by: Marian Balakowicz <m8@semihalf.com>
88 lines
2.6 KiB
C
88 lines
2.6 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, int verify)
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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);
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#if defined(CONFIG_FIT)
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} else if (images->fit_uname_os) {
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fit_unsupported_reset ("SH linux bootm");
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do_reset (cmdtp, flag, argc, argv);
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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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do_reset (cmdtp, flag, argc, argv);
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}
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void (*kernel) (void) = (void (*)(void))ep;
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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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}
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