linux-kernel - [PATCH v2 01/17] sh: Add sh-specific early_init_dt_reserve_memory

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Date:	Sun, 12 Jun 2016 15:54:19 +0900
From:	Yoshinori Sato <ysato@...rs.sourceforge.jp>
To:	linux-sh@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:	Yoshinori Sato <ysato@...rs.sourceforge.jp>
Subject: [PATCH v2 01/17] sh: Add sh-specific early_init_dt_reserve_memory_arch

sh used P1 address space in early device tree.
So need convert P1 to physical address before reserve memory.

Signed-off-by: Yoshinori Sato <ysato@...rs.sourceforge.jp>
---
 arch/sh/boards/of-generic.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/arch/sh/boards/of-generic.c b/arch/sh/boards/of-generic.c
index 57d45dc..fe2d917 100644
--- a/arch/sh/boards/of-generic.c
+++ b/arch/sh/boards/of-generic.c
@@ -15,6 +15,7 @@
 #include <linux/clocksource.h>
 #include <linux/irqchip.h>
 #include <linux/clk-provider.h>
+#include <linux/memblock.h>
 #include <asm/machvec.h>
 #include <asm/rtc.h>
 
@@ -203,3 +204,14 @@ static int __init sh_of_device_init(void)
 	return 0;
 }
 arch_initcall_sync(sh_of_device_init);
+
+int __init early_init_dt_reserve_memory_arch(phys_addr_t base,
+					     phys_addr_t size, bool nomap)
+{
+	if (nomap)
+		return memblock_remove(base, size);
+
+	if (base >= P1SEG)
+		base = base & ~P1SEG;
+	return memblock_reserve(base, size);
+}
-- 
2.7.0