diff options
| author | Arthur Heymans <arthur@aheymans.xyz> | 2017-05-15 10:43:20 +0200 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2018-05-14 08:30:51 +0000 |
| commit | e6cc21e262aec4846831dd1da57d34cc8fc9099f (patch) | |
| tree | e745b7a567ed22abeae46a7fa8c6c08ca2a7cc2b /src/northbridge | |
| parent | 0d1c9b0e3275d2c22a68cf318a06923c0c675f58 (diff) | |
nb/intel/x4x/raminit: DDR3 specific ODT
Change-Id: Ie32a008ce636b8eee6ed90c364978f7d37f4bfb2
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/19876
Reviewed-by: Patrick Rudolph <siro@das-labor.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/northbridge')
| -rw-r--r-- | src/northbridge/intel/x4x/raminit_ddr23.c | 42 |
1 files changed, 37 insertions, 5 deletions
diff --git a/src/northbridge/intel/x4x/raminit_ddr23.c b/src/northbridge/intel/x4x/raminit_ddr23.c index 018e60422d..e4cdcd2d56 100644 --- a/src/northbridge/intel/x4x/raminit_ddr23.c +++ b/src/northbridge/intel/x4x/raminit_ddr23.c @@ -1218,7 +1218,7 @@ static void prog_rcomp(struct sysinfo *s) static void program_odt(struct sysinfo *s) { u8 i; - u16 odt[16][2] = { + static u16 ddr2_odt[16][2] = { { 0x0000, 0x0000 }, // NC_NC { 0x0000, 0x0001 }, // x8SS_NC { 0x0000, 0x0011 }, // x8DS_NC @@ -1237,11 +1237,43 @@ static void program_odt(struct sysinfo *s) { 0x0101, 0x0404 }, // x16SS_x16SS }; + static const u16 ddr3_odt[16][2] = { + { 0x0000, 0x0000 }, // NC_NC + { 0x0000, 0x0001 }, // x8SS_NC + { 0x0000, 0x0021 }, // x8DS_NC + { 0x0000, 0x0001 }, // x16SS_NC + { 0x0004, 0x0000 }, // NC_x8SS + { 0x0105, 0x0405 }, // x8SS_x8SS + { 0x0105, 0x4465 }, // x8DS_x8SS + { 0x0105, 0x0405 }, // x16SS_x8SS + { 0x0084, 0x0000 }, // NC_x8DS + { 0x1195, 0x0405 }, // x8SS_x8DS + { 0x1195, 0x4465 }, // x8DS_x8DS + { 0x1195, 0x0405 }, // x16SS_x8DS + { 0x0004, 0x0000 }, // NC_x16SS + { 0x0105, 0x0405 }, // x8SS_x16SS + { 0x0105, 0x4465 }, // x8DS_x16SS + { 0x0105, 0x0405 }, // x16SS_x16SS + }; + FOR_EACH_POPULATED_CHANNEL(s->dimms, i) { - MCHBAR16(0x400*i + 0x298) = odt[s->dimm_config[i]][1]; - MCHBAR16(0x400*i + 0x294) = odt[s->dimm_config[i]][0]; - MCHBAR16(0x400*i + 0x29c) = (MCHBAR16(0x400*i + 0x29c) & ~0xfff) | 0x66b; - MCHBAR32(0x400*i + 0x260) = (MCHBAR32(0x400*i + 0x260) & ~0x70e3c00) | 0x3063c00; + if (s->spd_type == DDR2) { + MCHBAR16(0x400 * i + 0x298) = + ddr2_odt[s->dimm_config[i]][1]; + MCHBAR16(0x400 * i + 0x294) = + ddr2_odt[s->dimm_config[i]][0]; + } else { + MCHBAR16(0x400 * i + 0x298) = + ddr3_odt[s->dimm_config[i]][1]; + MCHBAR16(0x400 * i + 0x294) = + ddr3_odt[s->dimm_config[i]][0]; + } + u16 reg16 = MCHBAR16(0x400*i + 0x29c); + reg16 &= ~0xfff; + reg16 |= (s->spd_type == DDR2 ? 0x66b : 0x778); + MCHBAR16(0x400*i + 0x29c) = reg16; + MCHBAR32(0x400*i + 0x260) = (MCHBAR32(0x400*i + 0x260) + & ~0x70e3c00) | 0x3063c00; } } |