The patch titled
memblock: add memblock_start_of_DRAM()
has been added to the -mm tree. Its filename is
memblock-add-memblock_start_of_dram.patch
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------------------------------------------------------
Subject: memblock: add memblock_start_of_DRAM()
From: Sam Ravnborg <sam@xxxxxxxxxxxx>
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@xxxxxxxxxxxx>
Cc: "David S. Miller" <davem@xxxxxxxxxxxxx>
Cc: Yinghai Lu <yinghai@xxxxxxxxxx>
Acked-by: Tejun Heo <tj@xxxxxxxxxx>
Cc: "H. Peter Anvin" <hpa@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/memblock.h | 1 +
mm/memblock.c | 6 ++++++
2 files changed, 7 insertions(+)
diff -puN include/linux/memblock.h~memblock-add-memblock_start_of_dram include/linux/memblock.h
--- a/include/linux/memblock.h~memblock-add-memblock_start_of_dram
+++ a/include/linux/memblock.h
@@ -80,6 +80,7 @@ extern phys_addr_t __memblock_alloc_base
phys_addr_t align,
phys_addr_t max_addr);
extern phys_addr_t memblock_phys_mem_size(void);
+extern phys_addr_t memblock_start_of_DRAM(void);
extern phys_addr_t memblock_end_of_DRAM(void);
extern void memblock_enforce_memory_limit(phys_addr_t memory_limit);
extern int memblock_is_memory(phys_addr_t addr);
diff -puN mm/memblock.c~memblock-add-memblock_start_of_dram mm/memblock.c
--- a/mm/memblock.c~memblock-add-memblock_start_of_dram
+++ a/mm/memblock.c
@@ -626,6 +626,12 @@ phys_addr_t __init memblock_phys_mem_siz
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;
_
Patches currently in -mm which might be from sam@xxxxxxxxxxxx are
linux-next.patch
memblock-add-memblock_start_of_dram.patch
memblock-add-no_bootmem-config-symbol.patch
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