From 85f94c96c190fbf614dc9089a4b857692593f077 Mon Sep 17 00:00:00 2001
From: Corey Osgood <corey.osgood@gmail.com>
Date: Thu, 11 Dec 2008 06:33:29 +0000
Subject: [PATCH] Check that the CAR and ROM areas don't collide.

Signed-off-by: Corey Osgood <corey.osgood@gmail.com>
Acked-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>



git-svn-id: svn://coreboot.org/repository/coreboot-v3@1071 f3766cd6-281f-0410-b1cd-43a5c92072e9
---
 include/arch/x86/cpu.h | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/include/arch/x86/cpu.h b/include/arch/x86/cpu.h
index 43f5e0b07f..88793cfb90 100644
--- a/include/arch/x86/cpu.h
+++ b/include/arch/x86/cpu.h
@@ -26,6 +26,14 @@
 #include <device/device.h>
 #include <shared.h>
 #include <mtrr.h>
+#include <config.h>
+
+/* Check that the CAR and ROM areas aren't going to collide */
+#if ((0x100000000 - (CONFIG_COREBOOT_ROMSIZE_KB * 1024)) < (CONFIG_CARBASE + CONFIG_CARSIZE))
+#error Your current Cache-As-Ram base does not allow room to map the selected\
+ chip size to memory. Please select a different chip size or move the CAR\
+ base to another sane location.
+#endif
 
 #define X86_VENDOR_INTEL	0
 #define X86_VENDOR_CYRIX	1