/* * 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");