fsboot.c
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/*
* (C) Copyright 2001
* Wave 7 Optics, Inc.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <config.h>
#include <command.h>
/*
* FIXME: Add code to test image and it's header.
*/
extern int valid_elf_image (unsigned long addr);
static int
image_check(ulong addr)
{
return valid_elf_image(addr);
}
void
init_fsboot(void)
{
char *envp;
ulong loadaddr;
ulong testaddr;
ulong alt_loadaddr;
char buf[9];
/*
* Get test image address
*/
if ((envp = getenv("testaddr")) != NULL)
testaddr = simple_strtoul(envp, NULL, 16);
else
testaddr = -1;
/*
* Are we going to test boot and image?
*/
if ((testaddr != -1) && image_check(testaddr)) {
/* Set alt_loadaddr */
alt_loadaddr = testaddr;
sprintf(buf, "%lX", alt_loadaddr);
setenv("alt_loadaddr", buf);
/* Clear test_addr */
setenv("testaddr", NULL);
/*
* Save current environment with alt_loadaddr,
* and cleared testaddr.
*/
saveenv();
/*
* Setup temporary loadaddr to alt_loadaddr
* XXX - DO NOT SAVE ENVIRONMENT!
*/
loadaddr = alt_loadaddr;
sprintf(buf, "%lX", loadaddr);
setenv("loadaddr", buf);
} else { /* Normal boot */
setenv("alt_loadaddr", NULL); /* Clear alt_loadaddr */
setenv("testaddr", NULL); /* Clear testaddr */
saveenv();
}
return;
}