diff options
| -rw-r--r-- | src/northbridge/intel/sandybridge/raminit_common.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/src/northbridge/intel/sandybridge/raminit_common.c b/src/northbridge/intel/sandybridge/raminit_common.c index d3b71d59d4..4d478a06ab 100644 --- a/src/northbridge/intel/sandybridge/raminit_common.c +++ b/src/northbridge/intel/sandybridge/raminit_common.c @@ -775,6 +775,22 @@ static void dram_mr2(ramctr_timing *ctrl, u8 rank, int channel) mr2reg |= (odt.rttwr / 60) << 9; write_mrreg(ctrl, channel, rank, 2, mr2reg); + + /* Program MR2 shadow */ + u32 reg32 = MCHBAR32(TC_MR2_SHADOW_ch(channel)); + + reg32 &= 3 << 14 | 3 << 6; + + reg32 |= mr2reg & ~(3 << 6); + + if (rank & 1) { + if (srt) + reg32 |= 1 << (rank / 2 + 6); + } else { + if (ctrl->rank_mirror[channel][rank]) + reg32 |= 1 << (rank / 2 + 14); + } + MCHBAR32(TC_MR2_SHADOW_ch(channel)) = reg32; } static void dram_mr3(ramctr_timing *ctrl, u8 rank, int channel) |