diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/northbridge/intel/sandybridge/raminit_common.c | 64 |
1 files changed, 11 insertions, 53 deletions
diff --git a/src/northbridge/intel/sandybridge/raminit_common.c b/src/northbridge/intel/sandybridge/raminit_common.c index 7252574ad6..8418ccd97f 100644 --- a/src/northbridge/intel/sandybridge/raminit_common.c +++ b/src/northbridge/intel/sandybridge/raminit_common.c @@ -1023,71 +1023,29 @@ void program_timings(ramctr_timing *ctrl, int channel) reg_roundtrip_latency = 0; FOR_ALL_POPULATED_RANKS { - int post_timA_min_high = 7, pre_timA_min_high = 7; - int post_timA_max_high = 0, pre_timA_max_high = 0; - int shift_402x = 0; - int shift = ctrl->timings[channel][slotrank].pi_coding + cmd_delay; - - if (shift < 0) - shift = 0; - - FOR_ALL_LANES { - post_timA_min_high = MIN(post_timA_min_high, - (ctrl->timings[channel][slotrank].lanes[lane]. - timA + shift) >> 6); - pre_timA_min_high = MIN(pre_timA_min_high, - ctrl->timings[channel][slotrank].lanes[lane]. - timA >> 6); - post_timA_max_high = MAX(post_timA_max_high, - (ctrl->timings[channel][slotrank].lanes[lane]. - timA + shift) >> 6); - pre_timA_max_high = MAX(pre_timA_max_high, - ctrl->timings[channel][slotrank].lanes[lane]. - timA >> 6); - } - - if (pre_timA_max_high - pre_timA_min_high < - post_timA_max_high - post_timA_min_high) - shift_402x = +1; - - else if (pre_timA_max_high - pre_timA_min_high > - post_timA_max_high - post_timA_min_high) - shift_402x = -1; - - reg_io_latency |= - (ctrl->timings[channel][slotrank].io_latency + shift_402x - - post_timA_min_high) << (4 * slotrank); + reg_io_latency |= ctrl->timings[channel][slotrank].io_latency << (4 * slotrank); reg_roundtrip_latency |= - (ctrl->timings[channel][slotrank].roundtrip_latency + - shift_402x) << (8 * slotrank); + ctrl->timings[channel][slotrank].roundtrip_latency << (8 * slotrank); FOR_ALL_LANES { MCHBAR32(lane_base[lane] + GDCRRX(channel, slotrank)) = - (((ctrl->timings[channel][slotrank].lanes[lane]. - timA + shift) & 0x3f) + ((ctrl->timings[channel][slotrank].lanes[lane].timA & 0x3f) + | + (ctrl->timings[channel][slotrank].lanes[lane].rising << 8) | - ((ctrl->timings[channel][slotrank].lanes[lane]. - rising + shift) << 8) + ((ctrl->timings[channel][slotrank].lanes[lane].timA & 0x1c0) << 10) | - (((ctrl->timings[channel][slotrank].lanes[lane]. - timA + shift - - (post_timA_min_high << 6)) & 0x1c0) << 10) - | ((ctrl->timings[channel][slotrank].lanes[lane]. - falling + shift) << 20)); + (ctrl->timings[channel][slotrank].lanes[lane].falling << 20)); MCHBAR32(lane_base[lane] + GDCRTX(channel, slotrank)) = - (((ctrl->timings[channel][slotrank].lanes[lane]. - timC + shift) & 0x3f) + ((ctrl->timings[channel][slotrank].lanes[lane].timC & 0x3f) | - (((ctrl->timings[channel][slotrank].lanes[lane]. - timB + shift) & 0x3f) << 8) + ((ctrl->timings[channel][slotrank].lanes[lane].timB & 0x3f) << 8) | - (((ctrl->timings[channel][slotrank].lanes[lane]. - timB + shift) & 0x1c0) << 9) + ((ctrl->timings[channel][slotrank].lanes[lane].timB & 0x1c0) << 9) | - (((ctrl->timings[channel][slotrank].lanes[lane]. - timC + shift) & 0x40) << 13)); + ((ctrl->timings[channel][slotrank].lanes[lane].timC & 0x40) << 13)); } } MCHBAR32(SC_ROUNDT_LAT_ch(channel)) = reg_roundtrip_latency; |