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authorPaul Mundt <lethal@linux-sh.org>2007-05-23 12:48:36 +0400
committerPaul Mundt <lethal@hera.kernel.org>2007-06-08 06:43:43 +0400
commitdfbb9042801eaeb4df9015bb86224291a39a0f52 (patch)
treefc762c923fbc48bd724e648ccb415307ba17086c /include/asm-sh/sparsemem.h
parent5900711ad7173b1cf3ee72eb21572e20b263ca0d (diff)
downloadlinux-dfbb9042801eaeb4df9015bb86224291a39a0f52.tar.xz
sh: sparsemem support.
This implements basic sparsemem support for SH. Presently this only uses static sparsemem, and we still permit explicit selection of flatmem. Those boards that want sparsemem can select it as usual. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'include/asm-sh/sparsemem.h')
-rw-r--r--include/asm-sh/sparsemem.h16
1 files changed, 16 insertions, 0 deletions
diff --git a/include/asm-sh/sparsemem.h b/include/asm-sh/sparsemem.h
new file mode 100644
index 000000000000..547a540b6667
--- /dev/null
+++ b/include/asm-sh/sparsemem.h
@@ -0,0 +1,16 @@
+#ifndef __ASM_SH_SPARSEMEM_H
+#define __ASM_SH_SPARSEMEM_H
+
+#ifdef __KERNEL__
+/*
+ * SECTION_SIZE_BITS 2^N: how big each section will be
+ * MAX_PHYSADDR_BITS 2^N: how much physical address space we have
+ * MAX_PHYSMEM_BITS 2^N: how much memory we can have in that space
+ */
+#define SECTION_SIZE_BITS 26
+#define MAX_PHYSADDR_BITS 32
+#define MAX_PHYSMEM_BITS 32
+
+#endif
+
+#endif /* __ASM_SH_SPARSEMEM_H */