From 54157a3e683d10137a80d2ac85a6aacfaa3f4020 Mon Sep 17 00:00:00 2001 From: Andrea Arcangeli Date: Tue, 8 Oct 2013 17:07:23 +0200 Subject: allow >1TB of RAM RH-Author: Andrea Arcangeli 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 RH-Acked-by: Gleb Natapov RH-Acked-by: Laszlo Ersek Receive bits 40-48 from qemu to setup e820 maps with more than 1TB of ram. Signed-off-by: Andrea Arcangeli --- src/cmos.h | 7 ++++--- src/post.c | 7 ++++--- 2 files changed, 8 insertions(+), 6 deletions(-) Signed-off-by: Miroslav Rezanina (cherry picked from commit 4fee214c41b11b72b3427fda18e9eac1ee647746) --- src/fw/paravirt.c | 7 ++++--- src/hw/rtc.h | 7 ++++--- 2 files changed, 8 insertions(+), 6 deletions(-) diff --git a/src/fw/paravirt.c b/src/fw/paravirt.c index 4fcd8f5..d1d01fa 100644 --- a/src/fw/paravirt.c +++ b/src/fw/paravirt.c @@ -495,9 +495,10 @@ qemu_cfg_e820(void) } // Check for memory over 4Gig in cmos - u64 high = ((rtc_read(CMOS_MEM_HIGHMEM_LOW) << 16) - | ((u32)rtc_read(CMOS_MEM_HIGHMEM_MID) << 24) - | ((u64)rtc_read(CMOS_MEM_HIGHMEM_HIGH) << 32)); + u64 high = ((rtc_read(CMOS_MEM_HIGHMEM_16) << 16) + | ((u32)rtc_read(CMOS_MEM_HIGHMEM_24) << 24) + | ((u64)rtc_read(CMOS_MEM_HIGHMEM_32) << 32) + | ((u64)rtc_read(CMOS_MEM_HIGHMEM_40) << 40)); RamSizeOver4G = high; e820_add(0x100000000ull, high, E820_RAM); dprintf(1, "RamSizeOver4G: 0x%016llx [cmos]\n", RamSizeOver4G); diff --git a/src/hw/rtc.h b/src/hw/rtc.h index 252e73a..c4369f8 100644 --- a/src/hw/rtc.h +++ b/src/hw/rtc.h @@ -41,9 +41,10 @@ #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 // RTC register flags -- 1.8.3.1