From 90414ef38b1f32b5b844e1fc27d30bd6d229f5de Mon Sep 17 00:00:00 2001
From: Andrea Arcangeli <aarcange@redhat.com>
Date: Tue, 8 Oct 2013 17:07:23 +0200
Subject: [PATCH 8/8] allow >1TB of RAM

RH-Author: Andrea Arcangeli <aarcange@redhat.com>
Message-id: <1381252043-13480-2-git-send-email-aarcange@redhat.com>
Patchwork-id: 54785
O-Subject: [RHEL-7.0 seabios PATCH] allow >1TB of RAM
Bugzilla: 1016974
RH-Acked-by: Paolo Bonzini <pbonzini@redhat.com>
RH-Acked-by: Gleb Natapov <gleb@redhat.com>
RH-Acked-by: Laszlo Ersek <lersek@redhat.com>

Receive bits 40-48 from qemu to setup e820 maps with more than 1TB of ram.

Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
---
 src/cmos.h | 7 ++++---
 src/post.c | 7 ++++---
 2 files changed, 8 insertions(+), 6 deletions(-)

Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
---
 src/cmos.h |    7 ++++---
 src/post.c |    7 ++++---
 2 files changed, 8 insertions(+), 6 deletions(-)

diff --git a/src/cmos.h b/src/cmos.h
index e4b6462..e810534 100644
--- a/src/cmos.h
+++ b/src/cmos.h
@@ -36,9 +36,10 @@
 #define CMOS_BIOS_BOOTFLAG1      0x38
 #define CMOS_BIOS_DISKTRANSFLAG  0x39
 #define CMOS_BIOS_BOOTFLAG2      0x3d
-#define CMOS_MEM_HIGHMEM_LOW     0x5b
-#define CMOS_MEM_HIGHMEM_MID     0x5c
-#define CMOS_MEM_HIGHMEM_HIGH    0x5d
+#define CMOS_MEM_HIGHMEM_16      0x5b
+#define CMOS_MEM_HIGHMEM_24      0x5c
+#define CMOS_MEM_HIGHMEM_32      0x5d
+#define CMOS_MEM_HIGHMEM_40      0x5e
 #define CMOS_BIOS_SMP_COUNT      0x5f
 
 // CMOS_FLOPPY_DRIVE_TYPE bitdefs
diff --git a/src/post.c b/src/post.c
index f3b56b8..737c16d 100644
--- a/src/post.c
+++ b/src/post.c
@@ -122,9 +122,10 @@ ram_probe(void)
         add_e820(0, rs, E820_RAM);
 
         // Check for memory over 4Gig
-        u64 high = ((inb_cmos(CMOS_MEM_HIGHMEM_LOW) << 16)
-                    | ((u32)inb_cmos(CMOS_MEM_HIGHMEM_MID) << 24)
-                    | ((u64)inb_cmos(CMOS_MEM_HIGHMEM_HIGH) << 32));
+        u64 high = ((inb_cmos(CMOS_MEM_HIGHMEM_16) << 16)
+                    | ((u32)inb_cmos(CMOS_MEM_HIGHMEM_24) << 24)
+                    | ((u64)inb_cmos(CMOS_MEM_HIGHMEM_32) << 32)
+		    | ((u64)inb_cmos(CMOS_MEM_HIGHMEM_40) << 40));
         RamSizeOver4G = high;
         add_e820(0x100000000ull, high, E820_RAM);
 
-- 
1.7.1