[J-u-boot.git] / common / cmd_bootldr.c

/*
 * 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,
	"bootldr - boot ldr image from memory\n",
	"[addr]\n"
	"    - boot ldr image stored in memory\n");
Commit	Line	Data
86a20fb9 MF	1	/*
	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
	27	int 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
	61	U_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");