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authorSam Ravnborg <sam@ravnborg.org>2011-10-31 17:08:16 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2011-10-31 17:30:47 -0700
commit0a93ebef698b08ed04af0d7d913bab8aedfdc253 (patch)
treedcdb4bba9355647dd060d9150422537ad126442a /mm
parentf5252e009d5b87071a919221e4f6624184005368 (diff)
downloadlinux-stericsson-0a93ebef698b08ed04af0d7d913bab8aedfdc253.tar.gz
memblock: add memblock_start_of_DRAM()
SPARC32 require access to the start address. Add a new helper memblock_start_of_DRAM() to give access to the address of the first memblock - which contains the lowest address. The awkward name was chosen to match the already present memblock_end_of_DRAM(). Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: "David S. Miller" <davem@davemloft.net> Cc: Yinghai Lu <yinghai@kernel.org> Acked-by: Tejun Heo <tj@kernel.org> Cc: "H. Peter Anvin" <hpa@zytor.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
-rw-r--r--mm/memblock.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/mm/memblock.c b/mm/memblock.c
index ccbf97339592..b7ed63633581 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -626,6 +626,12 @@ phys_addr_t __init memblock_phys_mem_size(void)
return memblock.memory_size;
}
+/* lowest address */
+phys_addr_t __init_memblock memblock_start_of_DRAM(void)
+{
+ return memblock.memory.regions[0].base;
+}
+
phys_addr_t __init_memblock memblock_end_of_DRAM(void)
{
int idx = memblock.memory.cnt - 1;