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-rw-r--r--common/cmd_bootldr.c64
1 files changed, 64 insertions, 0 deletions
diff --git a/common/cmd_bootldr.c b/common/cmd_bootldr.c
new file mode 100644
index 0000000..e6474aa
--- /dev/null
+++ b/common/cmd_bootldr.c
@@ -0,0 +1,64 @@
+/*
+ * 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");