From: Simon Glass <sjg@chromium.org>
Date: Thu, 13 Nov 2014 05:42:20 +0000 (-0700)
Subject: x86: ivybridge: Check BIST value on boot
X-Git-Tag: v2015.01-rc2~5^2~9
X-Git-Url: https://git.sur5r.net/?a=commitdiff_plain;h=94060ff278e3ed4d91e4605701231d194a5013a3;p=u-boot

x86: ivybridge: Check BIST value on boot

The built-in self test value should be checked before we continue booting.
Refuse to continue if there is something wrong.

Signed-off-by: Simon Glass <sjg@chromium.org>
---

diff --git a/arch/x86/cpu/ivybridge/cpu.c b/arch/x86/cpu/ivybridge/cpu.c
index ab708dd776..6a242d7c8b 100644
--- a/arch/x86/cpu/ivybridge/cpu.c
+++ b/arch/x86/cpu/ivybridge/cpu.c
@@ -179,10 +179,26 @@ int arch_cpu_init(void)
 	return 0;
 }
 
+static int report_bist_failure(void)
+{
+	if (gd->arch.bist != 0) {
+		printf("BIST failed: %08x\n", gd->arch.bist);
+		return -EFAULT;
+	}
+
+	return 0;
+}
+
 int print_cpuinfo(void)
 {
 	char processor_name[CPU_MAX_NAME_LEN];
 	const char *name;
+	int ret;
+
+	/* Halt if there was a built in self test failure */
+	ret = report_bist_failure();
+	if (ret)
+		return ret;
 
 	/* Print processor name */
 	name = cpu_get_name(processor_name);