Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=36bcd39dbca824daffe16d607ae574b6edc7d31a
Commit: 36bcd39dbca824daffe16d607ae574b6edc7d31a
Parent: af3c7dfe822b598a2f977098101ed8b63cf0fdd1
Author: Paul Mundt <[EMAIL PROTECTED]>
AuthorDate: Sat Nov 10 19:16:55 2007 +0900
Committer: Paul Mundt <[EMAIL PROTECTED]>
CommitDate: Mon Jan 28 13:18:42 2008 +0900
sh: Split out 29-bit and 32-bit physical mode definitions.
Signed-off-by: Paul Mundt <[EMAIL PROTECTED]>
---
arch/sh/mm/Kconfig | 11 +++++++++++
arch/sh/mm/Makefile | 2 +-
include/asm-sh/pgtable.h | 17 +++++++++++++++++
3 files changed, 29 insertions(+), 1 deletions(-)
diff --git a/arch/sh/mm/Kconfig b/arch/sh/mm/Kconfig
index a7bbc2c..8192c87 100644
--- a/arch/sh/mm/Kconfig
+++ b/arch/sh/mm/Kconfig
@@ -46,9 +46,20 @@ config MEMORY_SIZE
as 0x00400000 which was the default value before this became
configurable.
+# Physical addressing modes
+
+config 29BIT
+ def_bool !32BIT
+ depends on SUPERH32
+
config 32BIT
+ bool
+ default y if CPU_SH5
+
+config PMB
bool "Support 32-bit physical addressing through PMB"
depends on MMU && (CPU_SUBTYPE_SH7780 || CPU_SUBTYPE_SH7785)
+ select 32BIT
default y
help
If you say Y here, physical addressing will be extended to
diff --git a/arch/sh/mm/Makefile b/arch/sh/mm/Makefile
index aa44607..d35cacc 100644
--- a/arch/sh/mm/Makefile
+++ b/arch/sh/mm/Makefile
@@ -31,7 +31,7 @@ endif
endif
obj-$(CONFIG_HUGETLB_PAGE) += hugetlbpage.o
-obj-$(CONFIG_32BIT) += pmb.o
+obj-$(CONFIG_PMB) += pmb.o
obj-$(CONFIG_NUMA) += numa.o
EXTRA_CFLAGS += -Werror
diff --git a/include/asm-sh/pgtable.h b/include/asm-sh/pgtable.h
index 8f1e8be..6ab3ba8 100644
--- a/include/asm-sh/pgtable.h
+++ b/include/asm-sh/pgtable.h
@@ -29,6 +29,23 @@ extern unsigned long empty_zero_page[PAGE_SIZE /
sizeof(unsigned long)];
#endif /* !__ASSEMBLY__ */
/*
+ * Effective and physical address definitions, to aid with sign
+ * extension.
+ */
+#define NEFF 32
+#define NEFF_SIGN (1LL << (NEFF - 1))
+#define NEFF_MASK (-1LL << NEFF)
+
+#ifdef CONFIG_29BIT
+#define NPHYS 29
+#else
+#define NPHYS 32
+#endif
+
+#define NPHYS_SIGN (1LL << (NPHYS - 1))
+#define NPHYS_MASK (-1LL << NPHYS)
+
+/*
* traditional two-level paging structure
*/
/* PTE bits */
-
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