arm: add support for reserved memory defined by device tree

Enable reserved memory initialization from device tree.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Grant Likely <grant.likely@linaro.org>

2 files changed, 3 insertions, 0 deletions

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index e25419817791..d0262bea8020 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -1918,6 +1918,7 @@ config USE_OF
         select IRQ_DOMAIN
         select OF
         select OF_EARLY_FLATTREE
+        select OF_RESERVED_MEM
         help
           Include support for flattened device tree machine descriptions.
 
diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
index 804d61566a53..2a77ba8796ae 100644
--- a/arch/arm/mm/init.c
+++ b/arch/arm/mm/init.c
@@ -323,6 +323,8 @@ void __init arm_memblock_init(struct meminfo *mi,
         if (mdesc->reserve)
                 mdesc->reserve();
 
+        early_init_fdt_scan_reserved_mem();
+
         /*
          * reserve memory for DMA contigouos allocations,
          * must come from DMA area inside low memory