[v4,6/7] arm64: add support for reserved memory defined by device tree

Commit Message

Marek Szyprowski Feb. 20, 2014, 10:52 a.m. UTC

Enable reserved memory initialization from device tree.

Signed-off-by: Marek Szyprowski <[e-mail]>
---
 arch/arm64/Kconfig   |    1 +
 arch/arm64/mm/init.c |    2 ++
 2 files changed, 3 insertions(+)

Patch

diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 27bbcfc7202a..6abf15407dca 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -43,6 +43,7 @@  config ARM64
 	select NO_BOOTMEM
 	select OF
 	select OF_EARLY_FLATTREE
+	select OF_RESERVED_MEM
 	select PERF_USE_VMALLOC
 	select POWER_RESET
 	select POWER_SUPPLY
diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c
index d0b4c2efda90..447550d6bd9b 100644
--- a/arch/arm64/mm/init.c
+++ b/arch/arm64/mm/init.c
@@ -30,6 +30,7 @@ 
 #include <linux/memblock.h>
 #include <linux/sort.h>
 #include <linux/of_fdt.h>
+#include <linux/of_reserved_mem.h>
 #include <linux/dma-contiguous.h>
 
 #include <asm/sections.h>
@@ -160,6 +161,7 @@  void __init arm64_memblock_init(void)
 		memblock_reserve(base, size);
 	}
 
+	early_init_fdt_scan_reserved_mem();
 	dma_contiguous_reserve(0);
 
 	memblock_allow_resize();