linux-kernel - [PATCH 08/12] SFI, x86: hook e820() for memory map initialization

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Date:	Wed, 08 Jul 2009 00:13:54 -0400
From:	Len Brown <lenb@...nel.org>
To:	x86@...nel.org, sfi-devel@...plefirmware.org,
	linux-kernel@...r.kernel.org, linux-acpi@...r.kernel.org
Cc:	Feng Tang <feng.tang@...el.com>, Len Brown <len.brown@...el.com>
Subject: [PATCH 08/12] SFI, x86: hook e820() for memory map initialization

From: Feng Tang <feng.tang@...el.com>

Signed-off-by: Feng Tang <feng.tang@...el.com>
Signed-off-by: Len Brown <len.brown@...el.com>
---
 arch/x86/kernel/e820.c |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/arch/x86/kernel/e820.c b/arch/x86/kernel/e820.c
index c4ca89d..e399d0e 100644
--- a/arch/x86/kernel/e820.c
+++ b/arch/x86/kernel/e820.c
@@ -20,6 +20,7 @@
 #include <linux/pfn.h>
 #include <linux/suspend.h>
 #include <linux/firmware-map.h>
+#include <linux/sfi.h>
 
 #include <asm/pgtable.h>
 #include <asm/page.h>
@@ -1437,6 +1438,10 @@ char *__init default_machine_specific_memory_setup(void)
 	  < 0) {
 		u64 mem_size;
 
+		/* if SFI mmap table exists, use SFI to setup e820 mmap */
+		if (!sfi_init_memory_map())
+			return "SFI";
+
 		/* compare results from other methods and take the greater */
 		if (boot_params.alt_mem_k
 		    < boot_params.screen_info.ext_mem_k) {
-- 
1.6.0.6

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