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From d5d95a6501682b870a8981f0ad129fa345bbda74 Mon Sep 17 00:00:00 2001
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From: Andrea Arcangeli <aarcange@redhat.com>
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Date: Tue, 8 Oct 2013 17:07:23 +0200
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Subject: allow >1TB of RAM
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RH-Author: Andrea Arcangeli <aarcange@redhat.com>
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Message-id: <1381252043-13480-2-git-send-email-aarcange@redhat.com>
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Patchwork-id: 54785
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O-Subject: [RHEL-7.0 seabios PATCH] allow >1TB of RAM
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Bugzilla: 1016974
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RH-Acked-by: Paolo Bonzini <pbonzini@redhat.com>
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RH-Acked-by: Gleb Natapov <gleb@redhat.com>
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RH-Acked-by: Laszlo Ersek <lersek@redhat.com>
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Receive bits 40-48 from qemu to setup e820 maps with more than 1TB of ram.
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Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
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---
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src/cmos.h | 7 ++++---
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src/post.c | 7 ++++---
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2 files changed, 8 insertions(+), 6 deletions(-)
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Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
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(cherry picked from commit 4fee214c41b11b72b3427fda18e9eac1ee647746)
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---
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src/fw/paravirt.c | 7 ++++---
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src/hw/rtc.h | 7 ++++---
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2 files changed, 8 insertions(+), 6 deletions(-)
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diff --git a/src/fw/paravirt.c b/src/fw/paravirt.c
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index 0770c47..0804d57 100644
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--- a/src/fw/paravirt.c
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+++ b/src/fw/paravirt.c
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@@ -492,9 +492,10 @@ qemu_cfg_e820(void)
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}
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// Check for memory over 4Gig in cmos
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- u64 high = ((rtc_read(CMOS_MEM_HIGHMEM_LOW) << 16)
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- | ((u32)rtc_read(CMOS_MEM_HIGHMEM_MID) << 24)
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- | ((u64)rtc_read(CMOS_MEM_HIGHMEM_HIGH) << 32));
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+ u64 high = ((rtc_read(CMOS_MEM_HIGHMEM_16) << 16)
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+ | ((u32)rtc_read(CMOS_MEM_HIGHMEM_24) << 24)
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+ | ((u64)rtc_read(CMOS_MEM_HIGHMEM_32) << 32)
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+ | ((u64)rtc_read(CMOS_MEM_HIGHMEM_40) << 40));
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RamSizeOver4G = high;
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e820_add(0x100000000ull, high, E820_RAM);
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dprintf(1, "RamSizeOver4G: 0x%016llx [cmos]\n", RamSizeOver4G);
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diff --git a/src/hw/rtc.h b/src/hw/rtc.h
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index 252e73a..c4369f8 100644
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--- a/src/hw/rtc.h
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+++ b/src/hw/rtc.h
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@@ -41,9 +41,10 @@
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#define CMOS_BIOS_BOOTFLAG1 0x38
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#define CMOS_BIOS_DISKTRANSFLAG 0x39
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#define CMOS_BIOS_BOOTFLAG2 0x3d
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-#define CMOS_MEM_HIGHMEM_LOW 0x5b
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-#define CMOS_MEM_HIGHMEM_MID 0x5c
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-#define CMOS_MEM_HIGHMEM_HIGH 0x5d
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+#define CMOS_MEM_HIGHMEM_16 0x5b
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+#define CMOS_MEM_HIGHMEM_24 0x5c
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+#define CMOS_MEM_HIGHMEM_32 0x5d
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+#define CMOS_MEM_HIGHMEM_40 0x5e
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#define CMOS_BIOS_SMP_COUNT 0x5f
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// RTC register flags
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--
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1.8.3.1
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