From 3ca41166d7d8fa36b58735ce5e36354279795f78 Mon Sep 17 00:00:00 2001
From: Urja Rannikko <urjaman@gmail.com>
Date: Sat, 7 Nov 2015 15:43:06 +0200
Subject: [PATCH] amd/model_fxx: Check FID&VID Support for the BSP (too)

Tested: Avoids crash with Sempron 2800+ on K8V-X.

Change-Id: I76196176635bb0f6ac284c8cb3b72212774fdfe4
Signed-off-by: Urja Rannikko <urjaman@gmail.com>
Reviewed-on: http://review.coreboot.org/12336
Tested-by: build bot (Jenkins)
Tested-by: Raptor Engineering Automated Test Stand <noreply@raptorengineeringinc.com>
Reviewed-by: Jonathan A. Kollasch <jakllsch@kollasch.net>
---
 src/cpu/amd/model_fxx/fidvid.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/cpu/amd/model_fxx/fidvid.c b/src/cpu/amd/model_fxx/fidvid.c
index 9851e6511e..03415d1b89 100644
--- a/src/cpu/amd/model_fxx/fidvid.c
+++ b/src/cpu/amd/model_fxx/fidvid.c
@@ -535,6 +535,9 @@ static void init_fidvid_bsp(unsigned bsp_apicid)
 	unsigned i;
 #endif
 
+	if ((cpuid_edx(0x80000007) & 0x06) != 0x06)
+		return; /* FID/VID change not supported */
+
 	msr_t msr;
 	msr = rdmsr(0xc0010042);
 	fid_max = ((msr.lo >> 16) & 0x3f);	/* max fid */