1 files changed, 61 insertions, 0 deletions

diff --git a/arch/ppc/boot/simple/misc-mv64x60.c b/arch/ppc/boot/simple/misc-mv64x60.c
new file mode 100644
index 000000000000..7e88fc6d207d
--- /dev/null
+++ b/arch/ppc/boot/simple/misc-mv64x60.c
@@ -0,0 +1,61 @@
+/*
+ * arch/ppc/boot/simple/misc-mv64x60.c
+ *
+ * Relocate bridge's register base and call board specific routine.
+ *
+ * Author: Mark A. Greer <source@mvista.com>
+ *
+ * 2005 (c) MontaVista Software, Inc. This file is licensed under
+ * the terms of the GNU General Public License version 2. This program
+ * is licensed "as is" without any warranty of any kind, whether express
+ * or implied.
+ */
+
+#include <linux/config.h>
+#include <linux/types.h>
+#include <asm/io.h>
+#include <asm/mv64x60_defs.h>
+
+extern struct bi_record *decompress_kernel(unsigned long load_addr,
+        int num_words, unsigned long cksum);
+
+void
+mv64x60_move_base(void __iomem *old_base, void __iomem *new_base)
+{
+        u32     bits, mask, b;
+
+        if (old_base != new_base) {
+#ifdef CONFIG_GT64260
+                bits = 12;
+                mask = 0x07000000;
+#else /* Must be mv64[34]60 */
+                bits = 16;
+                mask = 0x03000000;
+#endif
+                b = in_le32(old_base + MV64x60_INTERNAL_SPACE_DECODE);
+                b &= mask;
+                b |= ((u32)new_base >> (32 - bits));
+                out_le32(old_base + MV64x60_INTERNAL_SPACE_DECODE, b);
+
+                __asm__ __volatile__("sync");
+
+                /* Wait for change to happen (in accordance with the manual) */
+                while (in_le32(new_base + MV64x60_INTERNAL_SPACE_DECODE) != b);
+        }
+}
+
+void __attribute__ ((weak))
+mv64x60_board_init(void __iomem *old_base, void __iomem *new_base)
+{
+}
+
+void *
+load_kernel(unsigned long load_addr, int num_words, unsigned long cksum,
+                void *ign1, void *ign2)
+{
+        mv64x60_move_base((void __iomem *)CONFIG_MV64X60_BASE,
+                (void __iomem *)CONFIG_MV64X60_NEW_BASE);
+        mv64x60_board_init((void __iomem *)CONFIG_MV64X60_BASE,
+                (void __iomem *)CONFIG_MV64X60_NEW_BASE);
+        return decompress_kernel(load_addr, num_words, cksum);
+}