summaryrefslogtreecommitdiff
path: root/resources/coreboot/haswell/patches/0023-haswell-NRI-Add-read-MPR-training.patch
diff options
context:
space:
mode:
Diffstat (limited to 'resources/coreboot/haswell/patches/0023-haswell-NRI-Add-read-MPR-training.patch')
-rw-r--r--resources/coreboot/haswell/patches/0023-haswell-NRI-Add-read-MPR-training.patch331
1 files changed, 0 insertions, 331 deletions
diff --git a/resources/coreboot/haswell/patches/0023-haswell-NRI-Add-read-MPR-training.patch b/resources/coreboot/haswell/patches/0023-haswell-NRI-Add-read-MPR-training.patch
deleted file mode 100644
index b13eb2db..00000000
--- a/resources/coreboot/haswell/patches/0023-haswell-NRI-Add-read-MPR-training.patch
+++ /dev/null
@@ -1,331 +0,0 @@
-From 6781cec818501f7afd6ee26464fd4556ac3068cb Mon Sep 17 00:00:00 2001
-From: Angel Pons <th3fanbus@gmail.com>
-Date: Sun, 8 May 2022 11:35:49 +0200
-Subject: [PATCH 23/26] haswell NRI: Add read MPR training
-
-Implement read training using DDR3 MPR (Multi-Purpose Register).
-
-Change-Id: Id17cb2c4c399ac9bcc937b595b58f863c152461b
-Signed-off-by: Angel Pons <th3fanbus@gmail.com>
----
- .../intel/haswell/native_raminit/Makefile.inc | 1 +
- .../haswell/native_raminit/raminit_main.c | 1 +
- .../haswell/native_raminit/raminit_native.h | 4 +
- .../haswell/native_raminit/train_read_mpr.c | 240 ++++++++++++++++++
- .../intel/haswell/registers/mchbar.h | 2 +-
- 5 files changed, 247 insertions(+), 1 deletion(-)
- create mode 100644 src/northbridge/intel/haswell/native_raminit/train_read_mpr.c
-
-diff --git a/src/northbridge/intel/haswell/native_raminit/Makefile.inc b/src/northbridge/intel/haswell/native_raminit/Makefile.inc
-index e2fbfb4211..c442be0728 100644
---- a/src/northbridge/intel/haswell/native_raminit/Makefile.inc
-+++ b/src/northbridge/intel/haswell/native_raminit/Makefile.inc
-@@ -16,4 +16,5 @@ romstage-y += setup_wdb.c
- romstage-y += spd_bitmunching.c
- romstage-y += testing_io.c
- romstage-y += timings_refresh.c
-+romstage-y += train_read_mpr.c
- romstage-y += train_receive_enable.c
-diff --git a/src/northbridge/intel/haswell/native_raminit/raminit_main.c b/src/northbridge/intel/haswell/native_raminit/raminit_main.c
-index 7d444659c3..264d1468f5 100644
---- a/src/northbridge/intel/haswell/native_raminit/raminit_main.c
-+++ b/src/northbridge/intel/haswell/native_raminit/raminit_main.c
-@@ -61,6 +61,7 @@ static const struct task_entry cold_boot[] = {
- { do_jedec_init, true, "JEDECINIT", },
- { pre_training, true, "PRETRAIN", },
- { train_receive_enable, true, "RCVET", },
-+ { train_read_mpr, true, "RDMPRT", },
- };
-
- /* Return a generic stepping value to make stepping checks simpler */
-diff --git a/src/northbridge/intel/haswell/native_raminit/raminit_native.h b/src/northbridge/intel/haswell/native_raminit/raminit_native.h
-index 500fc28909..a7551ad63c 100644
---- a/src/northbridge/intel/haswell/native_raminit/raminit_native.h
-+++ b/src/northbridge/intel/haswell/native_raminit/raminit_native.h
-@@ -27,6 +27,8 @@
- /* Always use 12 legs for emphasis (not trained) */
- #define TXEQFULLDRV (3 << 4)
-
-+#define LOOPCOUNT_INFINITE 0xff
-+
- /* DDR3 mode register bits */
- #define MR0_DLL_RESET BIT(8)
-
-@@ -212,6 +214,7 @@ enum raminit_status {
- RAMINIT_STATUS_POLL_TIMEOUT,
- RAMINIT_STATUS_REUT_ERROR,
- RAMINIT_STATUS_RCVEN_FAILURE,
-+ RAMINIT_STATUS_RMPR_FAILURE,
- RAMINIT_STATUS_UNSPECIFIED_ERROR, /** TODO: Deprecated in favor of specific values **/
- };
-
-@@ -435,6 +438,7 @@ enum raminit_status configure_mc(struct sysinfo *ctrl);
- enum raminit_status configure_memory_map(struct sysinfo *ctrl);
- enum raminit_status do_jedec_init(struct sysinfo *ctrl);
- enum raminit_status train_receive_enable(struct sysinfo *ctrl);
-+enum raminit_status train_read_mpr(struct sysinfo *ctrl);
-
- void configure_timings(struct sysinfo *ctrl);
- void configure_refresh(struct sysinfo *ctrl);
-diff --git a/src/northbridge/intel/haswell/native_raminit/train_read_mpr.c b/src/northbridge/intel/haswell/native_raminit/train_read_mpr.c
-new file mode 100644
-index 0000000000..0225e1a384
---- /dev/null
-+++ b/src/northbridge/intel/haswell/native_raminit/train_read_mpr.c
-@@ -0,0 +1,240 @@
-+/* SPDX-License-Identifier: GPL-2.0-or-later */
-+
-+#include <commonlib/clamp.h>
-+#include <console/console.h>
-+#include <delay.h>
-+#include <northbridge/intel/haswell/haswell.h>
-+#include <types.h>
-+
-+#include "raminit_native.h"
-+#include "ranges.h"
-+
-+#define RMPR_START (-32)
-+#define RMPR_STOP (32)
-+#define RMPR_STEP 1
-+
-+#define RMPR_MIN_WIDTH 12
-+
-+#define RMPR_PLOT RAM_DEBUG
-+
-+/*
-+ * Clear rx_training_mode. For LPDDR, we first need to disable odt_samp_extend_en,
-+ * then disable rx_training_mode, and finally re-enable odt_samp_extend_en.
-+ */
-+static void clear_rx_training_mode(struct sysinfo *ctrl, const uint8_t channel)
-+{
-+ for (uint8_t byte = 0; byte < ctrl->lanes; byte++)
-+ mchbar_write32(DQ_CONTROL_2(channel, byte), ctrl->dq_control_2[channel][byte]);
-+
-+ if (ctrl->lpddr) {
-+ union ddr_data_control_0_reg data_control_0 = {
-+ .raw = mchbar_read32(DDR_DATA_ch_CONTROL_0(channel)),
-+ };
-+ data_control_0.odt_samp_extend_en = 0;
-+ mchbar_write32(DDR_DATA_ch_CONTROL_0(channel), data_control_0.raw);
-+ tick_delay(1);
-+ data_control_0.rx_training_mode = 0;
-+ mchbar_write32(DDR_DATA_ch_CONTROL_0(channel), data_control_0.raw);
-+ tick_delay(1);
-+ }
-+ mchbar_write32(DDR_DATA_ch_CONTROL_0(channel), ctrl->dq_control_0[channel]);
-+}
-+
-+static void set_rxdqs_edges_to_midpoint(struct sysinfo *ctrl)
-+{
-+ for (uint8_t channel = 0; channel < NUM_CHANNELS; channel++) {
-+ if (!does_ch_exist(ctrl, channel))
-+ continue;
-+
-+ for (uint8_t rank = 0; rank < NUM_SLOTRANKS; rank++) {
-+ if (!rank_in_ch(ctrl, rank, channel))
-+ continue;
-+
-+ for (uint8_t byte = 0; byte < ctrl->lanes; byte++)
-+ update_rxt(ctrl, channel, rank, byte, RXT_RXDQS_BOTH, 32);
-+ }
-+ }
-+}
-+
-+static void enter_mpr_train_ddr_mode(struct sysinfo *ctrl, const uint8_t rank)
-+{
-+ /* Program MR3 and mask RAS/WE to prevent scheduler from issuing non-read commands */
-+ for (uint8_t channel = 0; channel < NUM_CHANNELS; channel++) {
-+ if (!rank_in_ch(ctrl, rank, channel))
-+ continue;
-+
-+ if (!ctrl->lpddr)
-+ reut_issue_mrs(ctrl, channel, BIT(rank), 3, 1 << 2);
-+
-+ union reut_misc_odt_ctrl_reg reut_misc_odt_ctrl = {
-+ .raw = mchbar_read32(REUT_ch_MISC_ODT_CTRL(channel)),
-+ };
-+ reut_misc_odt_ctrl.mpr_train_ddr_on = 1;
-+ mchbar_write32(REUT_ch_MISC_ODT_CTRL(channel), reut_misc_odt_ctrl.raw);
-+ }
-+}
-+
-+static void leave_mpr_train_ddr_mode(struct sysinfo *ctrl, const uint8_t rank)
-+{
-+ for (uint8_t channel = 0; channel < NUM_CHANNELS; channel++) {
-+ if (!rank_in_ch(ctrl, rank, channel))
-+ continue;
-+
-+ /*
-+ * The mpr_train_ddr_on bit will force a special command.
-+ * Therefore, clear it before issuing the MRS command.
-+ */
-+ union reut_misc_odt_ctrl_reg reut_misc_odt_ctrl = {
-+ .raw = mchbar_read32(REUT_ch_MISC_ODT_CTRL(channel)),
-+ };
-+ reut_misc_odt_ctrl.mpr_train_ddr_on = 0;
-+ mchbar_write32(REUT_ch_MISC_ODT_CTRL(channel), reut_misc_odt_ctrl.raw);
-+ if (!ctrl->lpddr)
-+ reut_issue_mrs(ctrl, channel, BIT(rank), 3, 0 << 2);
-+ }
-+}
-+
-+enum raminit_status train_read_mpr(struct sysinfo *ctrl)
-+{
-+ set_rxdqs_edges_to_midpoint(ctrl);
-+ clear_data_offset_train_all(ctrl);
-+ setup_io_test_mpr(ctrl, ctrl->chanmap, LOOPCOUNT_INFINITE, NSOE);
-+ enum raminit_status status = RAMINIT_STATUS_SUCCESS;
-+ for (uint8_t rank = 0; rank < NUM_SLOTRANKS; rank++) {
-+ if (!does_rank_exist(ctrl, rank))
-+ continue;
-+
-+ printk(BIOS_DEBUG, "Rank %u\n", rank);
-+ printk(RMPR_PLOT, "Channel");
-+ for (uint8_t channel = 0; channel < NUM_CHANNELS; channel++) {
-+ if (!rank_in_ch(ctrl, rank, channel))
-+ continue;
-+
-+ printk(RMPR_PLOT, "\t%u\t\t", channel);
-+ }
-+ printk(RMPR_PLOT, "\nByte");
-+ for (uint8_t channel = 0; channel < NUM_CHANNELS; channel++) {
-+ if (!rank_in_ch(ctrl, rank, channel))
-+ continue;
-+
-+ printk(RMPR_PLOT, "\t");
-+ for (uint8_t byte = 0; byte < ctrl->lanes; byte++)
-+ printk(RMPR_PLOT, "%u ", byte);
-+ }
-+ enter_mpr_train_ddr_mode(ctrl, rank);
-+ struct linear_train_data region_data[NUM_CHANNELS][NUM_LANES] = { 0 };
-+ for (uint8_t channel = 0; channel < NUM_CHANNELS; channel++)
-+ select_reut_ranks(ctrl, channel, BIT(rank));
-+
-+ printk(RMPR_PLOT, "\nDqsDelay\n");
-+ int8_t dqs_delay;
-+ for (dqs_delay = RMPR_START; dqs_delay < RMPR_STOP; dqs_delay += RMPR_STEP) {
-+ printk(RMPR_PLOT, "% 5d", dqs_delay);
-+ const enum regfile_mode regfile = REG_FILE_USE_START;
-+ change_1d_margin_multicast(ctrl, RdT, dqs_delay, 0, false, regfile);
-+ for (uint8_t channel = 0; channel < NUM_CHANNELS; channel++) {
-+ if (!rank_in_ch(ctrl, rank, channel))
-+ continue;
-+
-+ for (uint8_t byte = 0; byte < ctrl->lanes; byte++) {
-+ union ddr_data_control_2_reg data_control_2 = {
-+ .raw = ctrl->dq_control_2[channel][byte],
-+ };
-+ data_control_2.force_bias_on = 1;
-+ data_control_2.force_rx_on = 1;
-+ data_control_2.leaker_comp = 0;
-+ mchbar_write32(DQ_CONTROL_2(channel, byte),
-+ data_control_2.raw);
-+ }
-+ union ddr_data_control_0_reg data_control_0 = {
-+ .raw = ctrl->dq_control_0[channel],
-+ };
-+ data_control_0.rx_training_mode = 1;
-+ data_control_0.force_odt_on = !ctrl->lpddr;
-+ data_control_0.en_read_preamble = 0;
-+ data_control_0.odt_samp_extend_en = ctrl->lpddr;
-+ const uint32_t reg_offset = DDR_DATA_ch_CONTROL_0(channel);
-+ mchbar_write32(reg_offset, data_control_0.raw);
-+ }
-+ run_mpr_io_test(false);
-+ for (uint8_t channel = 0; channel < NUM_CHANNELS; channel++) {
-+ if (!rank_in_ch(ctrl, rank, channel))
-+ continue;
-+
-+ printk(RMPR_PLOT, "\t");
-+ for (uint8_t byte = 0; byte < ctrl->lanes; byte++) {
-+ uint32_t fb = get_data_train_feedback(channel, byte);
-+ const bool pass = fb == 1;
-+ printk(RMPR_PLOT, pass ? ". " : "# ");
-+ linear_record_pass(
-+ &region_data[channel][byte],
-+ pass,
-+ dqs_delay,
-+ RMPR_START,
-+ RMPR_STEP);
-+ }
-+ }
-+ printk(RMPR_PLOT, "\n");
-+ for (uint8_t channel = 0; channel < NUM_CHANNELS; channel++) {
-+ if (!rank_in_ch(ctrl, rank, channel))
-+ continue;
-+
-+ clear_rx_training_mode(ctrl, channel);
-+ }
-+ io_reset();
-+ }
-+ printk(RMPR_PLOT, "\n");
-+ leave_mpr_train_ddr_mode(ctrl, rank);
-+ clear_data_offset_train_all(ctrl);
-+ for (uint8_t channel = 0; channel < NUM_CHANNELS; channel++) {
-+ if (!rank_in_ch(ctrl, rank, channel))
-+ continue;
-+
-+ printk(BIOS_DEBUG, "C%u.R%u: \tLeft\tRight\tWidth\tCenter\tRxDqsPN\n",
-+ channel, rank);
-+ for (uint8_t byte = 0; byte < ctrl->lanes; byte++) {
-+ struct linear_train_data *data = &region_data[channel][byte];
-+ const int32_t lwidth = range_width(data->largest);
-+ if (lwidth <= RMPR_MIN_WIDTH) {
-+ printk(BIOS_ERR,
-+ "Bad eye (lwidth %d <= min %d) for byte %u\n",
-+ lwidth, RMPR_MIN_WIDTH, byte);
-+ status = RAMINIT_STATUS_RMPR_FAILURE;
-+ }
-+ /*
-+ * The MPR center may not be ideal on certain platforms for
-+ * unknown reasons. If so, adjust it with a magical number.
-+ * For Haswell, the magical number is zero. Hell knows why.
-+ */
-+ const int32_t center = range_center(data->largest);
-+ ctrl->rxdqsp[channel][rank][byte] = center - RMPR_START;
-+ ctrl->rxdqsn[channel][rank][byte] = center - RMPR_START;
-+ printk(BIOS_DEBUG, " B%u: \t%d\t%d\t%d\t%d\t%u\n", byte,
-+ data->largest.start, data->largest.end, lwidth,
-+ center, ctrl->rxdqsp[channel][rank][byte]);
-+ }
-+ printk(BIOS_DEBUG, "\n");
-+ }
-+ }
-+
-+ /*
-+ * Now program the DQS center values on populated ranks. data is taken from
-+ * the host struct. We need to do it after all ranks are trained, because we
-+ * need to keep the same DQS value on all ranks during the training procedure.
-+ */
-+ for (uint8_t channel = 0; channel < NUM_CHANNELS; channel++) {
-+ if (!does_ch_exist(ctrl, channel))
-+ continue;
-+
-+ for (uint8_t rank = 0; rank < NUM_SLOTRANKS; rank++) {
-+ if (!rank_in_ch(ctrl, rank, channel))
-+ continue;
-+
-+ for (uint8_t byte = 0; byte < ctrl->lanes; byte++)
-+ update_rxt(ctrl, channel, rank, byte, RXT_RESTORE, 0);
-+ }
-+ }
-+ change_1d_margin_multicast(ctrl, RdT, 0, 0, false, REG_FILE_USE_CURRENT);
-+ io_reset();
-+ return status;
-+}
-diff --git a/src/northbridge/intel/haswell/registers/mchbar.h b/src/northbridge/intel/haswell/registers/mchbar.h
-index 0acafbc826..6a31d3a32c 100644
---- a/src/northbridge/intel/haswell/registers/mchbar.h
-+++ b/src/northbridge/intel/haswell/registers/mchbar.h
-@@ -122,7 +122,7 @@
- #define REUT_ch_ERR_DATA_MASK(ch) _MCMAIN_C(0x40d8, ch)
-
- #define REUT_ch_MISC_CKE_CTRL(ch) _MCMAIN_C(0x4190, ch)
--
-+#define REUT_ch_MISC_ODT_CTRL(ch) _MCMAIN_C(0x4194, ch)
- #define REUT_ch_MISC_PAT_CADB_CTRL(ch) _MCMAIN_C(0x4198, ch)
- #define REUT_ch_PAT_CADB_MRS(ch) _MCMAIN_C(0x419c, ch)
- #define REUT_ch_PAT_CADB_MUX_CTRL(ch) _MCMAIN_C(0x41a0, ch)
---
-2.39.2
-
generated by cgit v1.2.1 (git 2.18.0) at 2024-06-26 18:30:43 +0000