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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
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 @@
1/*
2 * arch/ppc/boot/simple/misc-mv64x60.c
3 *
4 * Relocate bridge's register base and call board specific routine.
5 *
6 * Author: Mark A. Greer <source@mvista.com>
7 *
8 * 2005 (c) MontaVista Software, Inc. This file is licensed under
9 * the terms of the GNU General Public License version 2. This program
10 * is licensed "as is" without any warranty of any kind, whether express
11 * or implied.
12 */
13
14#include <linux/config.h>
15#include <linux/types.h>
16#include <asm/io.h>
17#include <asm/mv64x60_defs.h>
18
19extern struct bi_record *decompress_kernel(unsigned long load_addr,
20 int num_words, unsigned long cksum);
21
22void
23mv64x60_move_base(void __iomem *old_base, void __iomem *new_base)
24{
25 u32 bits, mask, b;
26
27 if (old_base != new_base) {
28#ifdef CONFIG_GT64260
29 bits = 12;
30 mask = 0x07000000;
31#else /* Must be mv64[34]60 */
32 bits = 16;
33 mask = 0x03000000;
34#endif
35 b = in_le32(old_base + MV64x60_INTERNAL_SPACE_DECODE);
36 b &= mask;
37 b |= ((u32)new_base >> (32 - bits));
38 out_le32(old_base + MV64x60_INTERNAL_SPACE_DECODE, b);
39
40 __asm__ __volatile__("sync");
41
42 /* Wait for change to happen (in accordance with the manual) */
43 while (in_le32(new_base + MV64x60_INTERNAL_SPACE_DECODE) != b);
44 }
45}
46
47void __attribute__ ((weak))
48mv64x60_board_init(void __iomem *old_base, void __iomem *new_base)
49{
50}
51
52void *
53load_kernel(unsigned long load_addr, int num_words, unsigned long cksum,
54 void *ign1, void *ign2)
55{
56 mv64x60_move_base((void __iomem *)CONFIG_MV64X60_BASE,
57 (void __iomem *)CONFIG_MV64X60_NEW_BASE);
58 mv64x60_board_init((void __iomem *)CONFIG_MV64X60_BASE,
59 (void __iomem *)CONFIG_MV64X60_NEW_BASE);
60 return decompress_kernel(load_addr, num_words, cksum);
61}