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Diffstat (limited to 'src/console/post.c')
-rw-r--r--src/console/post.c15
1 files changed, 12 insertions, 3 deletions
diff --git a/src/console/post.c b/src/console/post.c
index f55683e4d1..11c631d4dc 100644
--- a/src/console/post.c
+++ b/src/console/post.c
@@ -23,6 +23,7 @@
#include <console/console.h>
#if CONFIG_CMOS_POST
#include <pc80/mc146818rtc.h>
+#include <smp/spinlock.h>
#endif
#include <elog.h>
@@ -44,10 +45,14 @@ void __attribute__((weak)) mainboard_post(uint8_t value)
#if CONFIG_CMOS_POST
+DECLARE_SPIN_LOCK(cmos_post_lock)
+
#if !defined(__PRE_RAM__)
void cmos_post_log(void)
{
- u8 code;
+ u8 code = 0;
+
+ spin_lock(&cmos_post_lock);
/* Get post code from other bank */
switch (cmos_read(CMOS_POST_BANK_OFFSET)) {
@@ -57,10 +62,10 @@ void cmos_post_log(void)
case CMOS_POST_BANK_1_MAGIC:
code = cmos_read(CMOS_POST_BANK_0_OFFSET);
break;
- default:
- return;
}
+ spin_unlock(&cmos_post_lock);
+
/* Check last post code in previous boot against normal list */
switch (code) {
case POST_OS_BOOT:
@@ -80,6 +85,8 @@ void cmos_post_log(void)
static void cmos_post_code(u8 value)
{
+ spin_lock(&cmos_post_lock);
+
switch (cmos_read(CMOS_POST_BANK_OFFSET)) {
case CMOS_POST_BANK_0_MAGIC:
cmos_write(value, CMOS_POST_BANK_0_OFFSET);
@@ -88,6 +95,8 @@ static void cmos_post_code(u8 value)
cmos_write(value, CMOS_POST_BANK_1_OFFSET);
break;
}
+
+ spin_unlock(&cmos_post_lock);
}
#endif /* CONFIG_CMOS_POST */