summaryrefslogtreecommitdiff
path: root/resources/coreboot/haswell/patches/0022-haswell-NRI-Add-function-to-change-margins.patch
diff options
context:
space:
mode:
Diffstat (limited to 'resources/coreboot/haswell/patches/0022-haswell-NRI-Add-function-to-change-margins.patch')
-rw-r--r--resources/coreboot/haswell/patches/0022-haswell-NRI-Add-function-to-change-margins.patch272
1 files changed, 0 insertions, 272 deletions
diff --git a/resources/coreboot/haswell/patches/0022-haswell-NRI-Add-function-to-change-margins.patch b/resources/coreboot/haswell/patches/0022-haswell-NRI-Add-function-to-change-margins.patch
deleted file mode 100644
index 2e6de17c..00000000
--- a/resources/coreboot/haswell/patches/0022-haswell-NRI-Add-function-to-change-margins.patch
+++ /dev/null
@@ -1,272 +0,0 @@
-From 8c3874195c0fc1af9d0b84611496689da1c19d8c Mon Sep 17 00:00:00 2001
-From: Angel Pons <th3fanbus@gmail.com>
-Date: Sun, 8 May 2022 11:58:59 +0200
-Subject: [PATCH 22/26] haswell NRI: Add function to change margins
-
-Implement a function to change margin parameters. Haswell provides a
-register to apply an offset to margin parameters during training, so
-make use of it. There are other margin parameters that have not been
-implemented yet, as they are not needed for now and special handling
-is needed to provide offset training functionality.
-
-Change-Id: I5392380e13de3c44e77b7bc9f3b819e2661d1e2d
-Signed-off-by: Angel Pons <th3fanbus@gmail.com>
----
- .../haswell/native_raminit/change_margin.c | 136 ++++++++++++++++++
- .../haswell/native_raminit/raminit_native.h | 39 +++++
- .../haswell/native_raminit/reg_structs.h | 12 ++
- .../intel/haswell/registers/mchbar.h | 1 +
- 4 files changed, 188 insertions(+)
-
-diff --git a/src/northbridge/intel/haswell/native_raminit/change_margin.c b/src/northbridge/intel/haswell/native_raminit/change_margin.c
-index 12da59580f..4ba9cfa5c6 100644
---- a/src/northbridge/intel/haswell/native_raminit/change_margin.c
-+++ b/src/northbridge/intel/haswell/native_raminit/change_margin.c
-@@ -1,5 +1,6 @@
- /* SPDX-License-Identifier: GPL-2.0-or-later */
-
-+#include <assert.h>
- #include <commonlib/clamp.h>
- #include <console/console.h>
- #include <delay.h>
-@@ -152,3 +153,138 @@ void download_regfile(
- ddr_data_control_0.read_rf_rank = phys_rank;
- mchbar_write32(reg, ddr_data_control_0.raw);
- }
-+
-+static void update_data_offset_train(
-+ struct sysinfo *ctrl,
-+ const uint8_t param,
-+ const uint8_t en_multicast,
-+ const uint8_t channel_in,
-+ const uint8_t rank,
-+ const uint8_t byte_in,
-+ const bool update_ctrl,
-+ const enum regfile_mode regfile,
-+ const uint32_t value)
-+{
-+ bool is_rd = false;
-+ bool is_wr = false;
-+ switch (param) {
-+ case RdT:
-+ case RdV:
-+ case RcvEna:
-+ is_rd = true;
-+ break;
-+ case WrT:
-+ case WrDqsT:
-+ is_wr = true;
-+ break;
-+ default:
-+ die("%s: Invalid margin parameter %u\n", __func__, param);
-+ }
-+ if (en_multicast) {
-+ mchbar_write32(DDR_DATA_OFFSET_TRAIN, value);
-+ for (uint8_t channel = 0; channel < NUM_CHANNELS; channel++) {
-+ if (!does_ch_exist(ctrl, channel))
-+ continue;
-+
-+ download_regfile(ctrl, channel, true, rank, regfile, 0, is_rd, is_wr);
-+ if (update_ctrl) {
-+ for (uint8_t byte = 0; byte < ctrl->lanes; byte++)
-+ ctrl->data_offset_train[channel][byte] = value;
-+ }
-+ }
-+ } else {
-+ mchbar_write32(DDR_DATA_OFFSET_TRAIN_ch_b(channel_in, byte_in), value);
-+ download_regfile(ctrl, channel_in, false, rank, regfile, byte_in, is_rd, is_wr);
-+ if (update_ctrl)
-+ ctrl->data_offset_train[channel_in][byte_in] = value;
-+ }
-+}
-+
-+static uint32_t get_max_margin(const enum margin_parameter param)
-+{
-+ switch (param) {
-+ case RcvEna:
-+ case RdT:
-+ case WrT:
-+ case WrDqsT:
-+ return MAX_POSSIBLE_TIME;
-+ case RdV:
-+ return MAX_POSSIBLE_VREF;
-+ default:
-+ die("%s: Invalid margin parameter %u\n", __func__, param);
-+ }
-+}
-+
-+void change_margin(
-+ struct sysinfo *ctrl,
-+ const enum margin_parameter param,
-+ const int32_t value0,
-+ const bool en_multicast,
-+ const uint8_t channel,
-+ const uint8_t rank,
-+ const uint8_t byte,
-+ const bool update_ctrl,
-+ const enum regfile_mode regfile)
-+{
-+ /** FIXME: Remove this **/
-+ if (rank == 0xff)
-+ die("%s: rank is 0xff\n", __func__);
-+
-+ if (!en_multicast && !does_ch_exist(ctrl, channel))
-+ die("%s: Tried to change margin of empty channel %u\n", __func__, channel);
-+
-+ const uint32_t max_value = get_max_margin(param);
-+ const int32_t v0 = clamp_s32(-max_value, value0, max_value);
-+
-+ union ddr_data_offset_train_reg ddr_data_offset_train = {
-+ .raw = en_multicast ? 0 : ctrl->data_offset_train[channel][byte],
-+ };
-+ bool update_offset_train = false;
-+ switch (param) {
-+ case RcvEna:
-+ ddr_data_offset_train.rcven = v0;
-+ update_offset_train = true;
-+ break;
-+ case RdT:
-+ ddr_data_offset_train.rx_dqs = v0;
-+ update_offset_train = true;
-+ break;
-+ case WrT:
-+ ddr_data_offset_train.tx_dq = v0;
-+ update_offset_train = true;
-+ break;
-+ case WrDqsT:
-+ ddr_data_offset_train.tx_dqs = v0;
-+ update_offset_train = true;
-+ break;
-+ case RdV:
-+ ddr_data_offset_train.vref = v0;
-+ update_offset_train = true;
-+ break;
-+ default:
-+ die("%s: Invalid margin parameter %u\n", __func__, param);
-+ }
-+ if (update_offset_train) {
-+ update_data_offset_train(
-+ ctrl,
-+ param,
-+ en_multicast,
-+ channel,
-+ rank,
-+ byte,
-+ update_ctrl,
-+ regfile,
-+ ddr_data_offset_train.raw);
-+ }
-+}
-+
-+void change_1d_margin_multicast(
-+ struct sysinfo *ctrl,
-+ const enum margin_parameter param,
-+ const int32_t value0,
-+ const uint8_t rank,
-+ const bool update_ctrl,
-+ const enum regfile_mode regfile)
-+{
-+ change_margin(ctrl, param, value0, true, 0, rank, 0, update_ctrl, regfile);
-+}
-diff --git a/src/northbridge/intel/haswell/native_raminit/raminit_native.h b/src/northbridge/intel/haswell/native_raminit/raminit_native.h
-index a36ebfacd1..500fc28909 100644
---- a/src/northbridge/intel/haswell/native_raminit/raminit_native.h
-+++ b/src/northbridge/intel/haswell/native_raminit/raminit_native.h
-@@ -35,6 +35,18 @@
-
- #define RTTNOM_MASK (BIT(9) | BIT(6) | BIT(2))
-
-+/* Margin parameter limits */
-+#define MAX_POSSIBLE_TIME 31
-+#define MAX_POSSIBLE_VREF 54
-+
-+#define MAX_POSSIBLE_BOTH MAX_POSSIBLE_VREF
-+
-+#define MIN_TIME (-MAX_POSSIBLE_TIME)
-+#define MAX_TIME (MAX_POSSIBLE_TIME)
-+
-+#define MIN_VREF (-MAX_POSSIBLE_VREF)
-+#define MAX_VREF (MAX_POSSIBLE_VREF)
-+
- #define BASIC_VA_PAT_SPREAD_8 0x01010101
-
- #define WDB_CACHE_LINE_SIZE 8
-@@ -45,6 +57,14 @@
- /* Specified in PI ticks. 64 PI ticks == 1 qclk */
- #define tDQSCK_DRIFT 64
-
-+enum margin_parameter {
-+ RcvEna,
-+ RdT,
-+ WrT,
-+ WrDqsT,
-+ RdV,
-+};
-+
- /* ZQ calibration types */
- enum {
- ZQ_INIT, /* DDR3: ZQCL with tZQinit, LPDDR3: ZQ Init with tZQinit */
-@@ -516,6 +536,25 @@ void download_regfile(
- bool read_rf_rd,
- bool read_rf_wr);
-
-+void change_margin(
-+ struct sysinfo *ctrl,
-+ const enum margin_parameter param,
-+ const int32_t value0,
-+ const bool en_multicast,
-+ const uint8_t channel,
-+ const uint8_t rank,
-+ const uint8_t byte,
-+ const bool update_ctrl,
-+ const enum regfile_mode regfile);
-+
-+void change_1d_margin_multicast(
-+ struct sysinfo *ctrl,
-+ const enum margin_parameter param,
-+ const int32_t value0,
-+ const uint8_t rank,
-+ const bool update_ctrl,
-+ const enum regfile_mode regfile);
-+
- uint8_t get_rx_bias(const struct sysinfo *ctrl);
-
- uint8_t get_tCWL(uint32_t mem_clock_mhz);
-diff --git a/src/northbridge/intel/haswell/native_raminit/reg_structs.h b/src/northbridge/intel/haswell/native_raminit/reg_structs.h
-index b099f4bb82..a0e36ed082 100644
---- a/src/northbridge/intel/haswell/native_raminit/reg_structs.h
-+++ b/src/northbridge/intel/haswell/native_raminit/reg_structs.h
-@@ -25,6 +25,18 @@ union ddr_data_tx_train_rank_reg {
- uint32_t raw;
- };
-
-+union ddr_data_offset_train_reg {
-+ struct __packed {
-+ int32_t rcven : 6; // Bits 5:0
-+ int32_t rx_dqs : 6; // Bits 11:6
-+ int32_t tx_dq : 6; // Bits 17:12
-+ int32_t tx_dqs : 6; // Bits 23:18
-+ int32_t vref : 7; // Bits 30:24
-+ int32_t : 1; // Bits 31:31
-+ };
-+ uint32_t raw;
-+};
-+
- union ddr_data_control_0_reg {
- struct __packed {
- uint32_t rx_training_mode : 1; // Bits 0:0
-diff --git a/src/northbridge/intel/haswell/registers/mchbar.h b/src/northbridge/intel/haswell/registers/mchbar.h
-index 9172d4f2b0..0acafbc826 100644
---- a/src/northbridge/intel/haswell/registers/mchbar.h
-+++ b/src/northbridge/intel/haswell/registers/mchbar.h
-@@ -21,6 +21,7 @@
- #define DDR_DATA_TRAIN_FEEDBACK(ch, byte) _DDRIO_C_R_B(0x0054, ch, 0, byte)
-
- #define DQ_CONTROL_2(ch, byte) _DDRIO_C_R_B(0x0064, ch, 0, byte)
-+#define DDR_DATA_OFFSET_TRAIN_ch_b(ch, byte) _DDRIO_C_R_B(0x0070, ch, 0, byte)
- #define DQ_CONTROL_0(ch, byte) _DDRIO_C_R_B(0x0074, ch, 0, byte)
-
- /* DDR CKE per-channel */
---
-2.39.2
-
generated by cgit v1.2.1 (git 2.18.0) at 2024-11-23 00:05:53 +0000