diff options
Diffstat (limited to 'src/northbridge/intel/sandybridge/raminit_common.c')
| -rw-r--r-- | src/northbridge/intel/sandybridge/raminit_common.c | 38 |
1 files changed, 19 insertions, 19 deletions
diff --git a/src/northbridge/intel/sandybridge/raminit_common.c b/src/northbridge/intel/sandybridge/raminit_common.c index 4ba2f0de82..7e937862db 100644 --- a/src/northbridge/intel/sandybridge/raminit_common.c +++ b/src/northbridge/intel/sandybridge/raminit_common.c @@ -2286,25 +2286,23 @@ int read_mpr_training(ramctr_timing *ctrl) return 0; } -static int discover_edges_write_real(ramctr_timing *ctrl, int channel, int slotrank, int *edges) +static int find_agrsv_read_margin(ramctr_timing *ctrl, int channel, int slotrank, int *edges) { - int edge; + const int rd_vref_offsets[] = { 0, 0xc, 0x2c }; + u32 raw_stats[MAX_EDGE_TIMING + 1]; - int stats[MAX_EDGE_TIMING + 1]; - const int reg3000b24[] = { 0, 0xc, 0x2c }; - int lane, i; int lower[NUM_LANES]; int upper[NUM_LANES]; - int pat; + int lane, i, read_pi, pat; FOR_ALL_LANES { lower[lane] = 0; upper[lane] = MAX_EDGE_TIMING; } - for (i = 0; i < 3; i++) { + for (i = 0; i < ARRAY_SIZE(rd_vref_offsets); i++) { const union gdcr_training_mod_reg training_mod = { - .vref_gen_ctl = reg3000b24[i], + .vref_gen_ctl = rd_vref_offsets[i], }; MCHBAR32(GDCRTRAININGMOD_ch(channel)) = training_mod.raw; printram("[%x] = 0x%08x\n", GDCRTRAININGMOD_ch(channel), training_mod.raw); @@ -2313,12 +2311,12 @@ static int discover_edges_write_real(ramctr_timing *ctrl, int channel, int slotr fill_pattern5(ctrl, channel, pat); printram("using pattern %d\n", pat); - for (edge = 0; edge <= MAX_EDGE_TIMING; edge++) { + for (read_pi = 0; read_pi <= MAX_EDGE_TIMING; read_pi++) { FOR_ALL_LANES { ctrl->timings[channel][slotrank].lanes[lane]. - rising = edge; + rising = read_pi; ctrl->timings[channel][slotrank].lanes[lane]. - falling = edge; + falling = read_pi; } program_timings(ctrl, channel); @@ -2339,13 +2337,15 @@ static int discover_edges_write_real(ramctr_timing *ctrl, int channel, int slotr } /* FIXME: This register only exists on Ivy Bridge */ - raw_stats[edge] = MCHBAR32(IOSAV_BYTE_SERROR_C_ch(channel)); + raw_stats[read_pi] = MCHBAR32(IOSAV_BYTE_SERROR_C_ch(channel)); } FOR_ALL_LANES { + int stats[MAX_EDGE_TIMING + 1]; struct run rn; - for (edge = 0; edge <= MAX_EDGE_TIMING; edge++) - stats[edge] = !!(raw_stats[edge] & (1 << lane)); + + for (read_pi = 0; read_pi <= MAX_EDGE_TIMING; read_pi++) + stats[read_pi] = !!(raw_stats[read_pi] & (1 << lane)); rn = get_longest_zero_run(stats, MAX_EDGE_TIMING + 1); @@ -2374,7 +2374,7 @@ static int discover_edges_write_real(ramctr_timing *ctrl, int channel, int slotr return 0; } -int discover_edges_write(ramctr_timing *ctrl) +int aggressive_read_training(ramctr_timing *ctrl) { int falling_edges[NUM_CHANNELS][NUM_SLOTRANKS][NUM_LANES]; int rising_edges[NUM_CHANNELS][NUM_SLOTRANKS][NUM_LANES]; @@ -2385,20 +2385,20 @@ int discover_edges_write(ramctr_timing *ctrl) * also use a single loop. It would seem that it is a debugging configuration. */ MCHBAR32(IOSAV_DC_MASK) = 0x300; - printram("discover falling edges write:\n[%x] = %x\n", IOSAV_DC_MASK, 0x300); + printram("discover falling edges aggressive:\n[%x] = %x\n", IOSAV_DC_MASK, 0x300); FOR_ALL_CHANNELS FOR_ALL_POPULATED_RANKS { - err = discover_edges_write_real(ctrl, channel, slotrank, + err = find_agrsv_read_margin(ctrl, channel, slotrank, falling_edges[channel][slotrank]); if (err) return err; } MCHBAR32(IOSAV_DC_MASK) = 0x200; - printram("discover rising edges write:\n[%x] = %x\n", IOSAV_DC_MASK, 0x200); + printram("discover rising edges aggressive:\n[%x] = %x\n", IOSAV_DC_MASK, 0x200); FOR_ALL_CHANNELS FOR_ALL_POPULATED_RANKS { - err = discover_edges_write_real(ctrl, channel, slotrank, + err = find_agrsv_read_margin(ctrl, channel, slotrank, rising_edges[channel][slotrank]); if (err) return err; |