mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-05 18:56:15 +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>
80 lines
1.6 KiB
C
80 lines
1.6 KiB
C
/*
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* U-boot - bootm.c - misc boot helper functions
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*
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* Copyright (c) 2005-2008 Analog Devices Inc.
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*
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* (C) Copyright 2000-2004
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*
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* Licensed under the GPL-2 or later.
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*/
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#include <common.h>
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#include <command.h>
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#include <image.h>
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#include <asm/blackfin.h>
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extern int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
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#ifdef SHARED_RESOURCES
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extern void swap_to(int device_id);
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#endif
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static char *make_command_line(void)
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{
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char *dest = (char *)CMD_LINE_ADDR;
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char *bootargs = getenv("bootargs");
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if (bootargs == NULL)
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return NULL;
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strncpy(dest, bootargs, 0x1000);
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dest[0xfff] = 0;
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return dest;
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}
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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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int (*appl) (char *cmdline);
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char *cmdline;
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ulong ep = 0;
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if (!images->autostart)
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return;
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#ifdef SHARED_RESOURCES
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swap_to(FLASH);
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#endif
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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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appl = (int (*)(char *))ep;
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printf("Starting Kernel at = %x\n", appl);
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cmdline = make_command_line();
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icache_disable();
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dcache_disable();
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(*appl) (cmdline);
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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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}
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