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xtensa: support reserved-memory DT node

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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>
This commit is contained in:
Max Filippov 2016-07-19 00:37:05 +03:00
parent 0e46c1115f
commit 4e7c84ec04
2 changed files with 3 additions and 0 deletions
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1
arch/xtensa/Kconfig
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@ -435,6 +435,7 @@ config USE_OF
bool "Flattened Device Tree support"
select OF
select OF_EARLY_FLATTREE
select OF_RESERVED_MEM
help
Include support for flattened device tree machine descriptions.

2
arch/xtensa/mm/init.c
View file

@ -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 @@ void __init bootmem_init(void)
else
memblock_reserve(0, 1);
early_init_fdt_scan_reserved_mem();
if (!memblock_phys_mem_size())
panic("No memory found!\n");