xtensa: support reserved-memory DT node
This allows reserving regions of physical memory from the device tree.
See Documentation/devicetree/bindings/reserved-memory/reserved-memory.txt
for more details.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
diff --git a/arch/xtensa/Kconfig b/arch/xtensa/Kconfig
index d20ddf7..3f6659c5 100644
--- a/arch/xtensa/Kconfig
+++ b/arch/xtensa/Kconfig
@@ -435,6 +435,7 @@
bool "Flattened Device Tree support"
select OF
select OF_EARLY_FLATTREE
+ select OF_RESERVED_MEM
help
Include support for flattened device tree machine descriptions.
diff --git a/arch/xtensa/mm/init.c b/arch/xtensa/mm/init.c
index 3ee7e29..80e4cfb 100644
--- a/arch/xtensa/mm/init.c
+++ b/arch/xtensa/mm/init.c
@@ -25,6 +25,7 @@
#include <linux/mman.h>
#include <linux/nodemask.h>
#include <linux/mm.h>
+#include <linux/of_fdt.h>
#include <asm/bootparam.h>
#include <asm/page.h>
@@ -48,6 +49,7 @@
else
memblock_reserve(0, 1);
+ early_init_fdt_scan_reserved_mem();
if (!memblock_phys_mem_size())
panic("No memory found!\n");