diff options
| -rw-r--r-- | src/northbridge/intel/haswell/raminit.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/src/northbridge/intel/haswell/raminit.c b/src/northbridge/intel/haswell/raminit.c index 5da11299ba..ff2456bef1 100644 --- a/src/northbridge/intel/haswell/raminit.c +++ b/src/northbridge/intel/haswell/raminit.c @@ -169,6 +169,16 @@ static void sdram_initialize(struct pei_data *pei_data) (version >> 24) & 0xff, (version >> 16) & 0xff, (version >> 8) & 0xff, (version >> 0) & 0xff); + /* + * MRC may return zero even when raminit did not complete successfully. + * Ensure the mc_init_done_ack bit is set before continuing. Otherwise, + * attempting to access memory will lock up the system. + */ + if (!(MCHBAR32(MC_INIT_STATE_G) & (1 << 5))) { + printk(BIOS_EMERG, "Memory controller did not acknowledge raminit.\n"); + die("MRC raminit failed\n"); + } + report_memory_config(); } |