diff options
Diffstat (limited to 'config/coreboot/default/patches/0052-haswell-NRI-Add-library-to-change-margins.patch')
| -rw-r--r-- | config/coreboot/default/patches/0052-haswell-NRI-Add-library-to-change-margins.patch | 294 |
1 files changed, 294 insertions, 0 deletions
diff --git a/config/coreboot/default/patches/0052-haswell-NRI-Add-library-to-change-margins.patch b/config/coreboot/default/patches/0052-haswell-NRI-Add-library-to-change-margins.patch new file mode 100644 index 00000000..ac096936 --- /dev/null +++ b/config/coreboot/default/patches/0052-haswell-NRI-Add-library-to-change-margins.patch @@ -0,0 +1,294 @@ +From 66db8447d6cf724c4b25618c94d5a53d501f214e Mon Sep 17 00:00:00 2001 +From: Angel Pons <th3fanbus@gmail.com> +Date: Sun, 8 May 2022 01:11:03 +0200 +Subject: [PATCH 10/17] haswell NRI: Add library to change margins + +Implement a library to change Rx/Tx margins. It will be expanded later. + +Change-Id: I0b55aba428d8b4d4e16d2fbdec57235ce3ce8adf +Signed-off-by: Angel Pons <th3fanbus@gmail.com> +--- + .../intel/haswell/native_raminit/Makefile.mk | 1 + + .../haswell/native_raminit/change_margin.c | 154 ++++++++++++++++++ + .../haswell/native_raminit/raminit_native.h | 50 ++++++ + .../intel/haswell/registers/mchbar.h | 9 + + 4 files changed, 214 insertions(+) + create mode 100644 src/northbridge/intel/haswell/native_raminit/change_margin.c + +diff --git a/src/northbridge/intel/haswell/native_raminit/Makefile.mk b/src/northbridge/intel/haswell/native_raminit/Makefile.mk +index 2da950771d..ebe9e9b762 100644 +--- a/src/northbridge/intel/haswell/native_raminit/Makefile.mk ++++ b/src/northbridge/intel/haswell/native_raminit/Makefile.mk +@@ -1,5 +1,6 @@ + ## SPDX-License-Identifier: GPL-2.0-or-later + ++romstage-y += change_margin.c + romstage-y += configure_mc.c + romstage-y += ddr3.c + romstage-y += jedec_reset.c +diff --git a/src/northbridge/intel/haswell/native_raminit/change_margin.c b/src/northbridge/intel/haswell/native_raminit/change_margin.c +new file mode 100644 +index 0000000000..055c666eee +--- /dev/null ++++ b/src/northbridge/intel/haswell/native_raminit/change_margin.c +@@ -0,0 +1,154 @@ ++/* SPDX-License-Identifier: GPL-2.0-or-later */ ++ ++#include <commonlib/bsd/clamp.h> ++#include <console/console.h> ++#include <delay.h> ++#include <northbridge/intel/haswell/haswell.h> ++#include <timer.h> ++ ++#include "raminit_native.h" ++ ++void update_rxt( ++ struct sysinfo *ctrl, ++ const uint8_t channel, ++ const uint8_t rank, ++ const uint8_t byte, ++ const enum rxt_subfield subfield, ++ const int32_t value) ++{ ++ union ddr_data_rx_train_rank_reg rxt = { ++ .rcven = ctrl->rcven[channel][rank][byte], ++ .dqs_p = ctrl->rxdqsp[channel][rank][byte], ++ .rx_eq = ctrl->rx_eq[channel][rank][byte], ++ .dqs_n = ctrl->rxdqsn[channel][rank][byte], ++ .vref = ctrl->rxvref[channel][rank][byte], ++ }; ++ int32_t new_value; ++ switch (subfield) { ++ case RXT_RCVEN: ++ new_value = clamp_s32(0, value, 511); ++ rxt.rcven = new_value; ++ break; ++ case RXT_RXDQS_P: ++ new_value = clamp_s32(0, value, 63); ++ rxt.dqs_p = new_value; ++ break; ++ case RXT_RX_EQ: ++ new_value = clamp_s32(0, value, 31); ++ rxt.rx_eq = new_value; ++ break; ++ case RXT_RXDQS_N: ++ new_value = clamp_s32(0, value, 63); ++ rxt.dqs_n = new_value; ++ break; ++ case RXT_RX_VREF: ++ new_value = clamp_s32(-32, value, 31); ++ rxt.vref = new_value; ++ break; ++ case RXT_RXDQS_BOTH: ++ new_value = clamp_s32(0, value, 63); ++ rxt.dqs_p = new_value; ++ rxt.dqs_n = new_value; ++ break; ++ case RXT_RESTORE: ++ new_value = value; ++ break; ++ default: ++ die("%s: Unhandled subfield index %u\n", __func__, subfield); ++ } ++ ++ if (new_value != value) { ++ printk(BIOS_ERR, "%s: Overflow for subfield %u: %d ---> %d\n", ++ __func__, subfield, value, new_value); ++ } ++ mchbar_write32(RX_TRAIN_ch_r_b(channel, rank, byte), rxt.raw); ++ download_regfile(ctrl, channel, false, rank, REG_FILE_USE_RANK, byte, true, false); ++} ++ ++void update_txt( ++ struct sysinfo *ctrl, ++ const uint8_t channel, ++ const uint8_t rank, ++ const uint8_t byte, ++ const enum txt_subfield subfield, ++ const int32_t value) ++{ ++ union ddr_data_tx_train_rank_reg txt = { ++ .dq_delay = ctrl->tx_dq[channel][rank][byte], ++ .dqs_delay = ctrl->txdqs[channel][rank][byte], ++ .tx_eq = ctrl->tx_eq[channel][rank][byte], ++ }; ++ int32_t new_value; ++ switch (subfield) { ++ case TXT_TX_DQ: ++ new_value = clamp_s32(0, value, 511); ++ txt.dq_delay = new_value; ++ break; ++ case TXT_TXDQS: ++ new_value = clamp_s32(0, value, 511); ++ txt.dqs_delay = new_value; ++ break; ++ case TXT_TX_EQ: ++ new_value = clamp_s32(0, value, 63); ++ txt.tx_eq = new_value; ++ break; ++ case TXT_DQDQS_OFF: ++ new_value = value; ++ txt.dqs_delay += new_value; ++ txt.dq_delay += new_value; ++ break; ++ case TXT_RESTORE: ++ new_value = value; ++ break; ++ default: ++ die("%s: Unhandled subfield index %u\n", __func__, subfield); ++ } ++ if (new_value != value) { ++ printk(BIOS_ERR, "%s: Overflow for subfield %u: %d ---> %d\n", ++ __func__, subfield, value, new_value); ++ } ++ mchbar_write32(TX_TRAIN_ch_r_b(channel, rank, byte), txt.raw); ++ download_regfile(ctrl, channel, false, rank, REG_FILE_USE_RANK, byte, false, true); ++} ++ ++void download_regfile( ++ struct sysinfo *ctrl, ++ const uint8_t channel, ++ const bool multicast, ++ const uint8_t rank, ++ const enum regfile_mode regfile, ++ const uint8_t byte, ++ const bool read_rf_rd, ++ const bool read_rf_wr) ++{ ++ union reut_seq_base_addr_reg reut_seq_base_addr; ++ switch (regfile) { ++ case REG_FILE_USE_START: ++ reut_seq_base_addr.raw = mchbar_read64(REUT_ch_SEQ_ADDR_START(channel)); ++ break; ++ case REG_FILE_USE_CURRENT: ++ reut_seq_base_addr.raw = mchbar_read64(REUT_ch_SEQ_ADDR_CURRENT(channel)); ++ break; ++ case REG_FILE_USE_RANK: ++ reut_seq_base_addr.raw = 0; ++ if (rank >= NUM_SLOTRANKS) ++ die("%s: bad rank %u\n", __func__, rank); ++ break; ++ default: ++ die("%s: Invalid regfile param %u\n", __func__, regfile); ++ } ++ uint8_t phys_rank = rank; ++ if (reut_seq_base_addr.raw != 0) { ++ /* Map REUT logical rank to physical rank */ ++ const uint32_t log_to_phys = mchbar_read32(REUT_ch_RANK_LOG_TO_PHYS(channel)); ++ phys_rank = log_to_phys >> (reut_seq_base_addr.rank_addr * 4) & 0x3; ++ } ++ uint32_t reg = multicast ? DDR_DATA_ch_CONTROL_0(channel) : DQ_CONTROL_0(channel, byte); ++ union ddr_data_control_0_reg ddr_data_control_0 = { ++ .raw = mchbar_read32(reg), ++ }; ++ ddr_data_control_0.read_rf_rd = read_rf_rd; ++ ddr_data_control_0.read_rf_wr = read_rf_wr; ++ ddr_data_control_0.read_rf_rank = phys_rank; ++ mchbar_write32(reg, ddr_data_control_0.raw); ++} +diff --git a/src/northbridge/intel/haswell/native_raminit/raminit_native.h b/src/northbridge/intel/haswell/native_raminit/raminit_native.h +index f029e7f076..8707257b27 100644 +--- a/src/northbridge/intel/haswell/native_raminit/raminit_native.h ++++ b/src/northbridge/intel/haswell/native_raminit/raminit_native.h +@@ -118,6 +118,30 @@ enum test_stop { + ALSOE = 3, /* Stop on all lanes error */ + }; + ++enum rxt_subfield { ++ RXT_RCVEN = 0, ++ RXT_RXDQS_P = 1, ++ RXT_RX_EQ = 2, ++ RXT_RXDQS_N = 3, ++ RXT_RX_VREF = 4, ++ RXT_RXDQS_BOTH = 5, ++ RXT_RESTORE = 255, ++}; ++ ++enum txt_subfield { ++ TXT_TX_DQ = 0, ++ TXT_TXDQS = 1, ++ TXT_TX_EQ = 2, ++ TXT_DQDQS_OFF = 3, ++ TXT_RESTORE = 255, ++}; ++ ++enum regfile_mode { ++ REG_FILE_USE_RANK, /* Used when changing parameters for each rank */ ++ REG_FILE_USE_START, /* Used when changing parameters before the test */ ++ REG_FILE_USE_CURRENT, /* Used when changing parameters after the test */ ++}; ++ + struct wdb_pat { + uint32_t start_ptr; /* Starting pointer in WDB */ + uint32_t stop_ptr; /* Stopping pointer in WDB */ +@@ -451,6 +475,32 @@ uint8_t select_reut_ranks(struct sysinfo *ctrl, uint8_t channel, uint8_t rankmas + void run_mpr_io_test(bool clear_errors); + uint8_t run_io_test(struct sysinfo *ctrl, uint8_t chanmask, uint8_t dq_pat, bool clear_errors); + ++void update_rxt( ++ struct sysinfo *ctrl, ++ uint8_t channel, ++ uint8_t rank, ++ uint8_t byte, ++ enum rxt_subfield subfield, ++ int32_t value); ++ ++void update_txt( ++ struct sysinfo *ctrl, ++ uint8_t channel, ++ uint8_t rank, ++ uint8_t byte, ++ enum txt_subfield subfield, ++ int32_t value); ++ ++void download_regfile( ++ struct sysinfo *ctrl, ++ uint8_t channel, ++ bool multicast, ++ uint8_t rank, ++ enum regfile_mode regfile, ++ uint8_t byte, ++ bool read_rf_rd, ++ bool read_rf_wr); ++ + 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/registers/mchbar.h b/src/northbridge/intel/haswell/registers/mchbar.h +index 817a9f8bf8..a81559bb1e 100644 +--- a/src/northbridge/intel/haswell/registers/mchbar.h ++++ b/src/northbridge/intel/haswell/registers/mchbar.h +@@ -15,7 +15,11 @@ + /* Register definitions */ + + /* DDR DATA per-channel per-bytelane */ ++#define RX_TRAIN_ch_r_b(ch, rank, byte) _DDRIO_C_R_B(0x0000, ch, rank, byte) ++#define TX_TRAIN_ch_r_b(ch, rank, byte) _DDRIO_C_R_B(0x0020, ch, rank, byte) ++ + #define DQ_CONTROL_2(ch, byte) _DDRIO_C_R_B(0x0064, ch, 0, byte) ++#define DQ_CONTROL_0(ch, byte) _DDRIO_C_R_B(0x0074, ch, 0, byte) + + /* DDR CKE per-channel */ + #define DDR_CKE_ch_CMD_COMP_OFFSET(ch) _DDRIO_C_R_B(0x1204, ch, 0, 0) +@@ -38,6 +42,9 @@ + #define DDR_SCRAMBLE_ch(ch) (0x2000 + 4 * (ch)) + #define DDR_SCRAM_MISC_CONTROL 0x2008 + ++/* DDR DATA per-channel multicast */ ++#define DDR_DATA_ch_CONTROL_0(ch) _DDRIO_C_R_B(0x3074, ch, 0, 0) ++ + /* DDR CMDN/CMDS per-channel (writes go to both CMDN and CMDS fubs) */ + #define DDR_CMD_ch_COMP_OFFSET(ch) _DDRIO_C_R_B(0x3204, ch, 0, 0) + #define DDR_CMD_ch_PI_CODING(ch) _DDRIO_C_R_B(0x3208, ch, 0, 0) +@@ -147,6 +154,8 @@ + + #define REUT_ch_SEQ_ADDR_WRAP(ch) (0x48e8 + 8 * (ch)) + ++#define REUT_ch_SEQ_ADDR_CURRENT(ch) (0x48f8 + 8 * (ch)) ++ + #define REUT_ch_SEQ_MISC_CTL(ch) (0x4908 + 4 * (ch)) + + #define REUT_ch_SEQ_ADDR_INC_CTL(ch) (0x4910 + 8 * (ch)) +-- +2.39.2 + |