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-rw-r--r--src/drivers/elog/elog.c38
1 files changed, 21 insertions, 17 deletions
diff --git a/src/drivers/elog/elog.c b/src/drivers/elog/elog.c
index f6b0006db8..76e8cf71b8 100644
--- a/src/drivers/elog/elog.c
+++ b/src/drivers/elog/elog.c
@@ -75,9 +75,13 @@ static elog_event_buffer_state event_buffer_state;
static u16 next_event_offset;
static u16 event_count;
-static int elog_initialized;
static struct spi_flash *elog_spi;
+static enum {
+ ELOG_UNINITIALIZED = 0,
+ ELOG_INITIALIZED,
+ ELOG_BROKEN,
+} elog_initialized = ELOG_UNINITIALIZED;
static inline u32 get_rom_size(void)
{
@@ -522,25 +526,18 @@ int elog_clear(void)
static void elog_find_flash(void)
{
-#if CONFIG_CHROMEOS
- u8 *flash_base_ptr;
-#endif
-
elog_debug("elog_find_flash()\n");
#if CONFIG_CHROMEOS
/* Find the ELOG base and size in FMAP */
- total_size = find_fmap_entry("RW_ELOG", (void **)&flash_base_ptr);
- if (total_size < 0) {
- printk(BIOS_WARNING, "ELOG: Unable to find RW_ELOG in FMAP, "
- "using CONFIG_ELOG_FLASH_BASE instead\n");
- total_size = CONFIG_ELOG_AREA_SIZE;
+ u8 *flash_base_ptr;
+ int fmap_size = find_fmap_entry("RW_ELOG", (void **)&flash_base_ptr);
+ if (fmap_size < 0) {
+ printk(BIOS_WARNING, "ELOG: Unable to find RW_ELOG in FMAP\n");
+ flash_base = total_size = 0;
} else {
flash_base = elog_flash_address_to_offset(flash_base_ptr);
-
- /* Use configured size if smaller than FMAP size */
- if (total_size > CONFIG_ELOG_AREA_SIZE)
- total_size = CONFIG_ELOG_AREA_SIZE;
+ total_size = MIN(fmap_size, CONFIG_ELOG_AREA_SIZE);
}
#else
flash_base = CONFIG_ELOG_FLASH_BASE;
@@ -554,8 +551,15 @@ static void elog_find_flash(void)
*/
int elog_init(void)
{
- if (elog_initialized)
+ switch (elog_initialized) {
+ case ELOG_UNINITIALIZED:
+ break;
+ case ELOG_INITIALIZED:
return 0;
+ case ELOG_BROKEN:
+ return -1;
+ }
+ elog_initialized = ELOG_BROKEN;
elog_debug("elog_init()\n");
@@ -600,8 +604,6 @@ int elog_init(void)
return -1;
}
- elog_initialized = 1;
-
printk(BIOS_INFO, "ELOG: FLASH @0x%p [SPI 0x%08x]\n",
elog_area, flash_base);
@@ -637,6 +639,8 @@ int elog_init(void)
#endif
#endif
+ elog_initialized = ELOG_INITIALIZED;
+
return 0;
}