diff options
Diffstat (limited to 'resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/kfsn4-dre/0001-nb-amd-mct_ddr3-Restore-previous-DQS-delay-values-on.patch')
| -rw-r--r-- | resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/kfsn4-dre/0001-nb-amd-mct_ddr3-Restore-previous-DQS-delay-values-on.patch | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/kfsn4-dre/0001-nb-amd-mct_ddr3-Restore-previous-DQS-delay-values-on.patch b/resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/kfsn4-dre/0001-nb-amd-mct_ddr3-Restore-previous-DQS-delay-values-on.patch new file mode 100644 index 0000000..905d73d --- /dev/null +++ b/resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/kfsn4-dre/0001-nb-amd-mct_ddr3-Restore-previous-DQS-delay-values-on.patch @@ -0,0 +1,39 @@ +From 9761ddff5c8e47d7b5321a8c98383970b4fb8683 Mon Sep 17 00:00:00 2001 +From: Timothy Pearson <tpearson@raptorengineeringinc.com> +Date: Mon, 7 Mar 2016 09:10:31 -0600 +Subject: [PATCH 1/2] nb/amd/mct_ddr3: Restore previous DQS delay values on + failed loop + +Change-Id: Iacfcd7f379d09a633973b4c3ef3cbb97e6d1f09f +Signed-off-by: Timothy Pearson <tpearson@raptorengineeringinc.com> +--- + src/northbridge/amd/amdmct/mct_ddr3/mctdqs_d.c | 6 ++++++ + 1 file changed, 6 insertions(+) + +diff --git a/src/northbridge/amd/amdmct/mct_ddr3/mctdqs_d.c b/src/northbridge/amd/amdmct/mct_ddr3/mctdqs_d.c +index 19a7acb..1a3c7c1 100644 +--- a/src/northbridge/amd/amdmct/mct_ddr3/mctdqs_d.c ++++ b/src/northbridge/amd/amdmct/mct_ddr3/mctdqs_d.c +@@ -1522,6 +1522,9 @@ static uint8_t TrainDQSRdWrPos_D_Fam15(struct MCTStatStruc *pMCTstat, + print_debug_dqs("\t\t\t\tTrainDQSRdWrPos: 143 largest read passing region start ", best_pos, 4); + print_debug_dqs("\t\t\t\tTrainDQSRdWrPos: 144 largest read passing region center (raw hardware value) ", region_center, 4); + } else { ++ /* Restore current settings of other (previously trained) lanes to the active array */ ++ memcpy(current_read_dqs_delay, initial_read_dqs_delay, sizeof(current_read_dqs_delay)); ++ + /* Reprogram the Read DQS Timing Control register with the original settings */ + write_dqs_read_data_timing_registers(initial_read_dqs_delay, dev, dct, dimm, index_reg); + } +@@ -1571,6 +1574,9 @@ static uint8_t TrainDQSRdWrPos_D_Fam15(struct MCTStatStruc *pMCTstat, + print_debug_dqs("\t\t\t\tTrainDQSRdWrPos: 145 largest write passing region ", best_count, 4); + print_debug_dqs("\t\t\t\tTrainDQSRdWrPos: 146 largest write passing region start ", best_pos, 4); + } else { ++ /* Restore current settings of other (previously trained) lanes to the active array */ ++ memcpy(current_write_dqs_delay, initial_write_data_timing, sizeof(current_write_data_delay)); ++ + /* Reprogram the Write DQS Timing Control register with the original settings */ + write_dqs_write_data_timing_registers(current_write_dqs_delay, dev, dct, dimm, index_reg); + } +-- +1.9.1 + |