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/*
* U-boot - bootldr.c
*
* Copyright (c) 2005-2008 Analog Devices Inc.
*
* See file CREDITS for list of people who contributed to this
* project.
*
* Licensed under the GPL-2 or later.
*/
#include <config.h>
#include <common.h>
#include <command.h>
#include <asm/blackfin.h>
#include <asm/mach-common/bits/bootrom.h>
/*
* the bootldr command loads an address, checks to see if there
* is a Boot stream that the on-chip BOOTROM can understand,
* and loads it via the BOOTROM Callback. It is possible
* to also add booting from SPI, or TWI, but this function does
* not currently support that.
*/
int do_bootldr(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
void *addr;
uint32_t *data;
/* Get the address */
if (argc < 2)
addr = (void *)load_addr;
else
addr = (void *)simple_strtoul(argv[1], NULL, 16);
/* Check if it is a LDR file */
data = addr;
#if defined(__ADSPBF54x__) || defined(__ADSPBF52x__)
if ((*data & 0xFF000000) == 0xAD000000 && data[2] == 0x00000000) {
#else
if (*data == 0xFF800060 || *data == 0xFF800040 || *data == 0xFF800020) {
#endif
/* We want to boot from FLASH or SDRAM */
printf("## Booting ldr image at 0x%p ...\n", addr);
icache_disable();
dcache_disable();
__asm__(
"jump (%1);"
:
: "q7" (addr), "a" (_BOOTROM_MEMBOOT));
} else
printf("## No ldr image at address 0x%p\n", addr);
return 0;
}
U_BOOT_CMD(bootldr, 2, 0, do_bootldr,
"[addr]\n"
" - boot ldr image stored in memory\n");