microblaze: Support flashes on lower addresses

Signed-off-by: Michal Simek <monstr@monstr.eu>

arch/microblaze/include/asm/processor.h

-/* FIXME: Implement this! */
+/*
+ * Copyright (C) 2011 Michal Simek <monstr@monstr.eu>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#ifndef __ASM_MICROBLAZE_PROCESSOR_H
+#define __ASM_MICROBLAZE_PROCESSOR_H
+
+/* References to section boundaries */
+
+extern char __end[];
+extern char __text_start[];
+
+#endif /* __ASM_MICROBLAZE_PROCESSOR_H */

arch/microblaze/lib/board.c

@@ -31,6 +31,7 @@
 #include <watchdog.h>
 #include <stdio_dev.h>
 #include <net.h>
+#include <asm/processor.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
@@ -84,6 +85,8 @@ init_fnc_t *init_sequence[] = {
 	NULL,
 };
 
+unsigned long monitor_flash_len;
+
 void board_init (void)
 {
 	bd_t *bd;
@@ -105,6 +108,8 @@ void board_init (void)
 	bd->bi_memsize = CONFIG_SYS_SDRAM_SIZE;
 	gd->flags |= GD_FLG_RELOC;      /* tell others: relocation done */
 
+	monitor_flash_len = __end - __text_start;
+
 	/*
 	 * The Malloc area is immediately below the monitor copy in DRAM
 	 * aka CONFIG_SYS_MONITOR_BASE - Note there is no need for reloc_off