diff options
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.patch | 272 |
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 - |