Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=7a2eacb75946e0ebb81dfb36b50b5bec1c3cb50f
Commit: 7a2eacb75946e0ebb81dfb36b50b5bec1c3cb50f
Parent: 80a68a43d90e2221599b507b6b26c3cba1957687
Author: Stuart Menefy <[EMAIL PROTECTED]>
AuthorDate: Mon Nov 26 21:29:09 2007 +0900
Committer: Paul Mundt <[EMAIL PROTECTED]>
CommitDate: Mon Jan 28 13:18:57 2008 +0900
sh: Provide a 29/32-bit physical hint for bootloaders.
Shoves a magic word in to the empty_zero_page section for the
bootloader to work out whether to start the kernel in 29-bit
or 32-bit mode.
[ Renesas CPUs already take care of the initial PMB mappings entirely
in hardware and decide on 29-bit/32-bit physical depending on which
pin powered up the CPU, so this is mostly for ST parts. -- PFM ].
Signed-off-by: Stuart Menefy <[EMAIL PROTECTED]>
Signed-off-by: Paul Mundt <[EMAIL PROTECTED]>
---
arch/sh/kernel/head_32.S | 6 +++++-
1 files changed, 5 insertions(+), 1 deletions(-)
diff --git a/arch/sh/kernel/head_32.S b/arch/sh/kernel/head_32.S
index 3338239..d67d7ed 100644
--- a/arch/sh/kernel/head_32.S
+++ b/arch/sh/kernel/head_32.S
@@ -32,7 +32,11 @@ ENTRY(empty_zero_page)
.long 1 /* LOADER_TYPE */
.long 0x00360000 /* INITRD_START */
.long 0x000a0000 /* INITRD_SIZE */
- .long 0
+#ifdef CONFIG_32BIT
+ .long 0x53453f00 + 32 /* "SE?" = 32 bit */
+#else
+ .long 0x53453f00 + 29 /* "SE?" = 29 bit */
+#endif
1:
.skip PAGE_SIZE - empty_zero_page - 1b
-
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