91 lines
2.0 KiB
C
91 lines
2.0 KiB
C
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/*
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* (C) Copyright 2001
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* Wave 7 Optics, Inc.
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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
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (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,
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* MA 02111-1307 USA
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*/
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#include <common.h>
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#include <config.h>
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#include <command.h>
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/*
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* FIXME: Add code to test image and it's header.
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*/
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extern int valid_elf_image (unsigned long addr);
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static int
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image_check(ulong addr)
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{
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return valid_elf_image(addr);
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}
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void
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init_fsboot(void)
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{
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char *envp;
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ulong loadaddr;
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ulong testaddr;
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ulong alt_loadaddr;
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char buf[9];
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/*
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* Get test image address
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*/
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if ((envp = getenv("testaddr")) != NULL)
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testaddr = simple_strtoul(envp, NULL, 16);
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else
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testaddr = -1;
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/*
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* Are we going to test boot and image?
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*/
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if ((testaddr != -1) && image_check(testaddr)) {
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/* Set alt_loadaddr */
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alt_loadaddr = testaddr;
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sprintf(buf, "%lX", alt_loadaddr);
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setenv("alt_loadaddr", buf);
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/* Clear test_addr */
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setenv("testaddr", NULL);
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/*
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* Save current environment with alt_loadaddr,
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* and cleared testaddr.
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*/
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saveenv();
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/*
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* Setup temporary loadaddr to alt_loadaddr
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* XXX - DO NOT SAVE ENVIRONMENT!
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*/
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loadaddr = alt_loadaddr;
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sprintf(buf, "%lX", loadaddr);
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setenv("loadaddr", buf);
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} else { /* Normal boot */
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setenv("alt_loadaddr", NULL); /* Clear alt_loadaddr */
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setenv("testaddr", NULL); /* Clear testaddr */
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saveenv();
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}
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return;
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}
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