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