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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/ppc/boot/simple/misc-mv64x60.c
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'arch/ppc/boot/simple/misc-mv64x60.c')
-rw-r--r--arch/ppc/boot/simple/misc-mv64x60.c61
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);
+}