summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
-rw-r--r--arch/x86/include/asm/e820.h3
-rw-r--r--arch/x86/kernel/resource.c3
2 files changed, 5 insertions, 1 deletions
diff --git a/arch/x86/include/asm/e820.h b/arch/x86/include/asm/e820.h
index 5be1542fbfaf..e99d55d74df5 100644
--- a/arch/x86/include/asm/e820.h
+++ b/arch/x86/include/asm/e820.h
@@ -72,6 +72,9 @@ struct e820map {
#define BIOS_BEGIN 0x000a0000
#define BIOS_END 0x00100000
+#define BIOS_ROM_BASE 0xffe00000
+#define BIOS_ROM_END 0xffffffff
+
#ifdef __KERNEL__
/* see comment in arch/x86/kernel/e820.c */
extern struct e820map e820;
diff --git a/arch/x86/kernel/resource.c b/arch/x86/kernel/resource.c
index 89638af2ff19..2a26819bb6a8 100644
--- a/arch/x86/kernel/resource.c
+++ b/arch/x86/kernel/resource.c
@@ -37,10 +37,11 @@ static void remove_e820_regions(struct resource *avail)
void arch_remove_reservations(struct resource *avail)
{
- /* Trim out BIOS area (low 1MB) and E820 regions */
+ /* Trim out BIOS areas (low 1MB and high 2MB) and E820 regions */
if (avail->flags & IORESOURCE_MEM) {
if (avail->start < BIOS_END)
avail->start = BIOS_END;
+ resource_clip(avail, BIOS_ROM_BASE, BIOS_ROM_END);
remove_e820_regions(avail);
}