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[U-Boot,v2,24/33] x86: ivybridge: Check BIST value on boot

Message ID 1415667650-14899-25-git-send-email-sjg@chromium.org
State Superseded
Delegated to: Simon Glass
Headers show

Commit Message

Simon Glass Nov. 11, 2014, 1 a.m. UTC 
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>
---

Changes in v2: None

 arch/x86/cpu/ivybridge/cpu.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)
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Patch

diff --git a/arch/x86/cpu/ivybridge/cpu.c b/arch/x86/cpu/ivybridge/cpu.c
index ab708dd..6a242d7 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);