blob: e6474aab22bfae66844a05fdda9e2865b9e124f7 [file] [log] [blame]
Mike Frysinger86a20fb2008-02-16 07:40:36 -05001/*
2 * U-boot - bootldr.c
3 *
4 * Copyright (c) 2005-2008 Analog Devices Inc.
5 *
6 * See file CREDITS for list of people who contributed to this
7 * project.
8 *
9 * Licensed under the GPL-2 or later.
10 */
11
12#include <config.h>
13#include <common.h>
14#include <command.h>
15
16#include <asm/blackfin.h>
17#include <asm/mach-common/bits/bootrom.h>
18
19/*
20 * the bootldr command loads an address, checks to see if there
21 * is a Boot stream that the on-chip BOOTROM can understand,
22 * and loads it via the BOOTROM Callback. It is possible
23 * to also add booting from SPI, or TWI, but this function does
24 * not currently support that.
25 */
26
27int do_bootldr(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
28{
29 void *addr;
30 uint32_t *data;
31
32 /* Get the address */
33 if (argc < 2)
34 addr = (void *)load_addr;
35 else
36 addr = (void *)simple_strtoul(argv[1], NULL, 16);
37
38 /* Check if it is a LDR file */
39 data = addr;
40#if defined(__ADSPBF54x__) || defined(__ADSPBF52x__)
41 if ((*data & 0xFF000000) == 0xAD000000 && data[2] == 0x00000000) {
42#else
43 if (*data == 0xFF800060 || *data == 0xFF800040 || *data == 0xFF800020) {
44#endif
45 /* We want to boot from FLASH or SDRAM */
46 printf("## Booting ldr image at 0x%p ...\n", addr);
47
48 icache_disable();
49 dcache_disable();
50
51 __asm__(
52 "jump (%1);"
53 :
54 : "q7" (addr), "a" (_BOOTROM_MEMBOOT));
55 } else
56 printf("## No ldr image at address 0x%p\n", addr);
57
58 return 0;
59}
60
61U_BOOT_CMD(bootldr, 2, 0, do_bootldr,
62 "bootldr - boot ldr image from memory\n",
63 "[addr]\n"
64 " - boot ldr image stored in memory\n");