linux-kernel - [PATCH v2] microblaze: add support for reserved memory defined by device tree

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Message-Id: <20191023102548.15164-1-alvaro.gamez@hazent.com>
Date:   Wed, 23 Oct 2019 12:25:48 +0200
From:   Alvaro Gamez Machado <alvaro.gamez@...ent.com>
To:     Michal Simek <monstr@...str.eu>,
        Andrew Morton <akpm@...ux-foundation.org>,
        linux-kernel@...r.kernel.org
Cc:     Alvaro Gamez Machado <alvaro.gamez@...ent.com>
Subject: [PATCH v2] microblaze: add support for reserved memory defined by device tree

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: Alvaro Gamez Machado <alvaro.gamez@...ent.com>
---
 arch/microblaze/mm/init.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/microblaze/mm/init.c b/arch/microblaze/mm/init.c
index a015a951c8b7..b69362fbfdbd 100644
--- a/arch/microblaze/mm/init.c
+++ b/arch/microblaze/mm/init.c
@@ -17,6 +17,7 @@
 #include <linux/slab.h>
 #include <linux/swap.h>
 #include <linux/export.h>
+#include <linux/of_fdt.h>
 
 #include <asm/page.h>
 #include <asm/mmu_context.h>
@@ -188,6 +189,9 @@ void __init setup_memory(void)
 
 void __init mem_init(void)
 {
+	early_init_fdt_reserve_self();
+	early_init_fdt_scan_reserved_mem();
+
 	high_memory = (void *)__va(memory_start + lowmem_size - 1);
 
 	/* this will put all memory onto the freelists */
-- 
2.23.0