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authorMartyn Welch <martyn.welch@gefanuc.com>2009-08-13 09:03:02 +0100
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2009-09-11 16:02:11 +1000
commitd331d8305cba713605854aab63a000fb892353a7 (patch)
tree5ee6cea2fe656d5772d79245e296c13b36f60456 /arch/powerpc/include/asm
parent1d6ed32226326a6e6cd67cd9ee4294bcbb0c9a15 (diff)
powerpc/nvram: Enable use Generic NVRAM driver for different size chips
Remove the reliance on a staticly defined NVRAM size, allowing platforms to support NVRAMs with sizes differing from the standard. A fall back value is provided for platforms not supporting this extension. Signed-off-by: Martyn Welch <martyn.welch@gefanuc.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/include/asm')
-rw-r--r--arch/powerpc/include/asm/nvram.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/nvram.h b/arch/powerpc/include/asm/nvram.h
index efde5ac82f7..6c587eddee5 100644
--- a/arch/powerpc/include/asm/nvram.h
+++ b/arch/powerpc/include/asm/nvram.h
@@ -107,6 +107,9 @@ extern void pmac_xpram_write(int xpaddr, u8 data);
/* Synchronize NVRAM */
extern void nvram_sync(void);
+/* Determine NVRAM size */
+extern ssize_t nvram_get_size(void);
+
/* Normal access to NVRAM */
extern unsigned char nvram_read_byte(int i);
extern void nvram_write_byte(unsigned char c, int i);