Commit 0a93ebef authored by Sam Ravnborg's avatar Sam Ravnborg Committed by Linus Torvalds

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
Signed-off-by: default avatarSam Ravnborg <>
Cc: "David S. Miller" <>
Cc: Yinghai Lu <>
Acked-by: default avatarTejun Heo <>
Cc: "H. Peter Anvin" <>
Signed-off-by: default avatarAndrew Morton <>
Signed-off-by: default avatarLinus Torvalds <>
parent f5252e00
......@@ -80,6 +80,7 @@ extern phys_addr_t __memblock_alloc_base(phys_addr_t size,
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);
......@@ -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;
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