libreboot-lbmk/resources/coreboot/haswell/patches/0018-haswell-NRI-Add-REUT-I-O-test-library.patch

From f4dd460d609276de7cb7db91f145a404451a2301 Mon Sep 17 00:00:00 2001
From: Angel Pons <th3fanbus@gmail.com>
Date: Sun, 8 May 2022 00:11:29 +0200
Subject: [PATCH 18/26] haswell NRI: Add REUT I/O test library

Implement a library to run I/O tests using the REUT hardware.

Change-Id: Id7b207cd0a3989ddd23c88c6b1f0cfa79d2c861f
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
---
 .../intel/haswell/native_raminit/Makefile.inc |   1 +
 .../haswell/native_raminit/raminit_native.h   | 110 +++
 .../haswell/native_raminit/reg_structs.h      | 121 +++
 .../intel/haswell/native_raminit/testing_io.c | 742 ++++++++++++++++++
 .../intel/haswell/registers/mchbar.h          |  30 +
 5 files changed, 1004 insertions(+)
 create mode 100644 src/northbridge/intel/haswell/native_raminit/testing_io.c

diff --git a/src/northbridge/intel/haswell/native_raminit/Makefile.inc b/src/northbridge/intel/haswell/native_raminit/Makefile.inc
index 8d7d4e4db0..6e1b365602 100644
--- a/src/northbridge/intel/haswell/native_raminit/Makefile.inc
+++ b/src/northbridge/intel/haswell/native_raminit/Makefile.inc
@@ -12,4 +12,5 @@ romstage-y += raminit_native.c
 romstage-y += reut.c
 romstage-y += setup_wdb.c
 romstage-y += spd_bitmunching.c
+romstage-y += testing_io.c
 romstage-y += timings_refresh.c
diff --git a/src/northbridge/intel/haswell/native_raminit/raminit_native.h b/src/northbridge/intel/haswell/native_raminit/raminit_native.h
index f29c2ec366..56df36ca8d 100644
--- a/src/northbridge/intel/haswell/native_raminit/raminit_native.h
+++ b/src/northbridge/intel/haswell/native_raminit/raminit_native.h
@@ -58,6 +58,88 @@ enum {
 	REUT_MODE_NOP  = 3, /* Normal operation mode */
 };
 
+/* REUT error counter control */
+enum {
+	COUNT_ERRORS_PER_CHANNEL	= 0,
+	COUNT_ERRORS_PER_LANE		= 1,
+	COUNT_ERRORS_PER_BYTE_GROUP	= 2,
+	COUNT_ERRORS_PER_CHUNK		= 3,
+};
+
+enum wdb_dq_pattern {
+	BASIC_VA = 0,
+	SEGMENT_WDB,
+	CADB,
+	TURN_AROUND,
+	LMN_VA,
+	TURN_AROUND_WR,
+	TURN_AROUND_ODT,
+	RD_RD_TA,
+	RD_RD_TA_ALL,
+};
+
+enum reut_cmd_pat {
+	PAT_WR_RD,
+	PAT_WR,
+	PAT_RD,
+	PAT_RD_WR_TA,
+	PAT_WR_RD_TA,
+	PAT_ODT_TA,
+};
+
+/* REUT subsequence types (B = Base, O = Offset) */
+enum {
+	SUBSEQ_B_RD	= 0 << 22,
+	SUBSEQ_B_WR	= 1 << 22,
+	SUBSEQ_B_RD_WR	= 2 << 22,
+	SUBSEQ_B_WR_RD	= 3 << 22,
+	SUBSEQ_O_RD	= 4 << 22,
+	SUBSEQ_O_WR	= 5 << 22,
+};
+
+/* REUT mux control */
+enum {
+	REUT_MUX_LMN      = 0,
+	REUT_MUX_BTBUFFER = 1,
+	REUT_MUX_LFSR     = 2,
+};
+
+/* Increment scale */
+enum {
+	SCALE_LOGARITHM	= 0,
+	SCALE_LINEAR	= 1,
+};
+
+enum test_stop {
+	NSOE   = 0,	/* Never stop on error */
+	NTHSOE = 1,	/* Stop on the nth error (we use n = 1) */
+	ABGSOE = 2,	/* Stop on all byte groups error */
+	ALSOE  = 3,	/* Stop on all lanes error */
+};
+
+struct wdb_pat {
+	uint32_t start_ptr;	/* Starting pointer in WDB */
+	uint32_t stop_ptr;	/* Stopping pointer in WDB */
+	uint16_t inc_rate;	/* How quickly the WDB walks through cachelines */
+	uint8_t  dq_pattern;	/* DQ pattern to use (see enum wdb_dq_pattern above) */
+};
+
+struct reut_pole {
+	uint16_t start;
+	uint16_t stop;
+	uint16_t order;
+	uint32_t inc_rate;
+	uint16_t inc_val;
+	bool wrap_trigger;
+};
+
+struct reut_box {
+	struct reut_pole rank;
+	struct reut_pole bank;
+	struct reut_pole row;
+	struct reut_pole col;
+};
+
 enum command_training_iteration {
 	CT_ITERATION_CLOCK = 0,
 	CT_ITERATION_CMD_NORTH,
@@ -199,6 +281,10 @@ struct sysinfo {
 	uint16_t mr1[NUM_CHANNELS][NUM_SLOTRANKS];
 	uint16_t mr2[NUM_CHANNELS][NUM_SLOTRANKS];
 	uint16_t mr3[NUM_CHANNELS][NUM_SLOTRANKS];
+
+	uint8_t dq_pat;
+
+	uint8_t dq_pat_lc;
 };
 
 static inline bool is_hsw_ult(void)
@@ -342,6 +428,30 @@ void write_wdb_va_pat(
 void program_wdb_lfsr(const struct sysinfo *ctrl, bool cleanup);
 void setup_wdb(const struct sysinfo *ctrl);
 
+void program_seq_addr(uint8_t channel, const struct reut_box *reut_addr, bool log_seq_addr);
+void program_loop_count(const struct sysinfo *ctrl, uint8_t channel, uint8_t lc_exp);
+
+void setup_io_test(
+	struct sysinfo *ctrl,
+	uint8_t chanmask,
+	enum reut_cmd_pat cmd_pat,
+	uint16_t num_cl,
+	uint8_t lc,
+	const struct reut_box *reut_addr,
+	enum test_stop soe,
+	const struct wdb_pat *pat,
+	uint8_t en_cadb,
+	uint8_t subseq_wait);
+
+void setup_io_test_cadb(struct sysinfo *ctrl, uint8_t chanmask, uint8_t lc, enum test_stop soe);
+void setup_io_test_basic_va(struct sysinfo *ctrl, uint8_t chm, uint8_t lc, enum test_stop soe);
+void setup_io_test_mpr(struct sysinfo *ctrl, uint8_t chanmask, uint8_t lc, enum test_stop soe);
+
+uint8_t select_reut_ranks(struct sysinfo *ctrl, uint8_t channel, uint8_t rankmask);
+
+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);
+
 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 7aa8d8c8b2..b943259b91 100644
--- a/src/northbridge/intel/haswell/native_raminit/reg_structs.h
+++ b/src/northbridge/intel/haswell/native_raminit/reg_structs.h
@@ -347,6 +347,54 @@ union reut_pat_cl_mux_lmn_reg {
 	uint32_t raw;
 };
 
+union reut_err_ctl_reg {
+	struct __packed {
+		uint32_t stop_on_nth_error              : 6; // Bits  5:0
+		uint32_t                                : 6; // Bits 11:6
+		uint32_t stop_on_error_control          : 2; // Bits 13:12
+		uint32_t                                : 2; // Bits 15:14
+		uint32_t selective_err_enable_chunk     : 8; // Bits 23:16
+		uint32_t selective_err_enable_cacheline : 8; // Bits 31:24
+	};
+	uint32_t raw;
+};
+
+union reut_pat_cadb_mux_ctrl_reg {
+	struct __packed {
+		uint32_t mux_0_ctrl     : 2; // Bits  1:0
+		uint32_t                : 2; // Bits  3:2
+		uint32_t mux_1_ctrl     : 2; // Bits  5:4
+		uint32_t                : 2; // Bits  7:6
+		uint32_t mux_2_ctrl     : 2; // Bits  9:8
+		uint32_t                : 6; // Bits 15:10
+		uint32_t sel_mux_0_ctrl : 2; // Bits 17:16
+		uint32_t                : 2; // Bits 19:18
+		uint32_t sel_mux_1_ctrl : 2; // Bits 21:20
+		uint32_t                : 2; // Bits 23:22
+		uint32_t sel_mux_2_ctrl : 2; // Bits 25:24
+		uint32_t                : 6; // Bits 31:26
+	};
+	uint32_t raw;
+};
+
+union reut_pat_wdb_cl_mux_cfg_reg {
+	struct __packed {
+		uint32_t mux_0_control         : 2; // Bits  1:0
+		uint32_t                       : 1; // Bits  2:2
+		uint32_t mux_1_control         : 2; // Bits  4:3
+		uint32_t                       : 1; // Bits  5:5
+		uint32_t mux_2_control         : 2; // Bits  7:6
+		uint32_t                       : 6; // Bits 13:8
+		uint32_t ecc_replace_byte_ctl  : 1; // Bits 14:14
+		uint32_t ecc_data_source_sel   : 1; // Bits 15:15
+		uint32_t save_lfsr_seed_rate   : 6; // Bits 21:16
+		uint32_t                       : 2; // Bits 23:22
+		uint32_t reload_lfsr_seed_rate : 3; // Bits 26:24
+		uint32_t                       : 5; // Bits 31:27
+	};
+	uint32_t raw;
+};
+
 union reut_pat_cadb_prog_reg {
 	struct __packed {
 		uint32_t addr : 16; // Bits 15:0
@@ -366,6 +414,19 @@ union reut_pat_cadb_prog_reg {
 	uint32_t raw32[2];
 };
 
+union reut_pat_wdb_cl_ctrl_reg {
+	struct __packed {
+		uint32_t inc_rate  :  5; // Bits 4:0
+		uint32_t inc_scale :  1; // Bits 5:5
+		uint32_t           :  2; // Bits 7:6
+		uint32_t start_ptr :  6; // Bits 13:8
+		uint32_t           :  2; // Bits 15:14
+		uint32_t end_ptr   :  6; // Bits 21:16
+		uint32_t           : 10; // Bits 31:22
+	};
+	uint32_t raw;
+};
+
 union reut_pat_cadb_mrs_reg {
 	struct __packed {
 		uint32_t delay_gap : 3; // Bits  2:0
@@ -406,6 +467,66 @@ union reut_seq_cfg_reg {
 	uint32_t raw32[2];
 };
 
+union reut_seq_base_addr_reg {
+	struct __packed {
+		uint32_t           :  3; // Bits  2:0
+		uint32_t col_addr  :  8; // Bits 10:3
+		uint32_t           : 13; // Bits 23:11
+		uint32_t row_addr  : 16; // Bits 39:24
+		uint32_t           :  8; // Bits 47:40
+		uint32_t bank_addr :  3; // Bits 50:48
+		uint32_t           :  5; // Bits 55:51
+		uint32_t rank_addr :  3; // Bits 58:56
+		uint32_t           :  5; // Bits 63:59
+	};
+	uint32_t raw32[2];
+	uint64_t raw;
+};
+
+union reut_seq_misc_ctl_reg {
+	struct __packed {
+		uint32_t col_addr_order       : 2; // Bits  1:0
+		uint32_t row_addr_order       : 2; // Bits  3:2
+		uint32_t bank_addr_order      : 2; // Bits  5:4
+		uint32_t rank_addr_order      : 2; // Bits  7:6
+		uint32_t                      : 5; // Bits 12:8
+		uint32_t addr_invert_rate     : 3; // Bits 15:13
+		uint32_t                      : 4; // Bits 19:16
+		uint32_t col_addr_invert_en   : 1; // Bits 20:20
+		uint32_t row_addr_invert_en   : 1; // Bits 21:21
+		uint32_t bank_addr_invert_en  : 1; // Bits 22:22
+		uint32_t rank_addr_invert_en  : 1; // Bits 23:23
+		uint32_t col_wrap_trigger_en  : 1; // Bits 24:24
+		uint32_t row_wrap_trigger_en  : 1; // Bits 25:25
+		uint32_t bank_wrap_trigger_en : 1; // Bits 26:26
+		uint32_t rank_wrap_trigger_en : 1; // Bits 27:27
+		uint32_t col_wrap_carry_en    : 1; // Bits 28:28
+		uint32_t row_wrap_carry_en    : 1; // Bits 29:29
+		uint32_t bank_wrap_carry_en   : 1; // Bits 30:30
+		uint32_t rank_wrap_carry_en   : 1; // Bits 31:31
+	};
+	uint32_t raw;
+};
+
+union reut_seq_addr_inc_ctl_reg {
+	struct __packed {
+		uint32_t                     :  3; // Bits  2:0
+		uint32_t col_addr_increment  :  8; // Bits 10:3
+		uint32_t                     :  1; // Bits 11:11
+		uint32_t col_addr_update     :  8; // Bits 19:12
+		uint32_t row_addr_increment  : 12; // Bits 31:20
+		uint32_t row_addr_update     :  6; // Bits 37:32
+		uint32_t bank_addr_increment :  3; // Bits 40:38
+		uint32_t                     :  3; // Bits 43:41
+		uint32_t bank_addr_update    :  8; // Bits 53:44
+		uint32_t rank_addr_increment :  3; // Bits 54:52
+		uint32_t                     :  1; // Bits 55:55
+		uint32_t rank_addr_update    :  8; // Bits 63:56
+	};
+	uint64_t raw;
+	uint32_t raw32[2];
+};
+
 union reut_seq_ctl_reg {
 	struct __packed {
 		uint32_t start_test    :  1; // Bits  0:0
diff --git a/src/northbridge/intel/haswell/native_raminit/testing_io.c b/src/northbridge/intel/haswell/native_raminit/testing_io.c
new file mode 100644
index 0000000000..7716fc4285
--- /dev/null
+++ b/src/northbridge/intel/haswell/native_raminit/testing_io.c
@@ -0,0 +1,742 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#include <console/console.h>
+#include <delay.h>
+#include <lib.h>
+#include <northbridge/intel/haswell/haswell.h>
+#include <timer.h>
+#include <types.h>
+
+#include "raminit_native.h"
+
+static void set_cadb_patterns(const uint8_t channel, const uint16_t seeds[NUM_CADB_MUX_SEEDS])
+{
+	for (uint8_t i = 0; i < NUM_CADB_MUX_SEEDS; i++)
+		mchbar_write32(REUT_ch_PAT_CADB_MUX_x(channel, i), seeds[i]);
+}
+
+static void setup_cadb(
+	struct sysinfo *ctrl,
+	const uint8_t channel,
+	const uint8_t vic_spread,
+	const uint8_t vic_bit)
+{
+	const bool lmn_en = false;
+
+	/*
+	 * Currently, always start writing at CADB row 0.
+	 * Could add a start point parameter in the future.
+	 */
+	mchbar_write8(REUT_ch_PAT_CADB_WRITE_PTR(channel), 0);
+	const uint8_t num_cadb_rows = 8;
+	for (uint8_t row = 0; row < num_cadb_rows; row++) {
+		const uint8_t lfsr0 = (row >> 0) & 1;
+		const uint8_t lfsr1 = (row >> 1) & 1;
+		uint64_t reg64 = 0;
+		for (uint8_t bit = 0; bit < 22; bit++) {
+			uint8_t bremap;
+			if (bit >= 19) {
+				/* (bremap in 40 .. 42) => CADB data control */
+				bremap = bit + 21;
+			} else if (bit >= 16) {
+				/* (bremap in 24 .. 26) => CADB data bank */
+				bremap = bit + 8;
+			} else {
+				/* (bremap in  0 .. 15) => CADB data address */
+				bremap = bit;
+			}
+			const uint8_t fine = bit % vic_spread;
+			reg64 |= ((uint64_t)(fine == vic_bit ? lfsr0 : lfsr1)) << bremap;
+		}
+		/*
+		 * Write row. CADB pointer is auto incremented after every write. This must be
+		 * a single 64-bit write, otherwise the CADB pointer will auto-increment twice.
+		 */
+		mchbar_write64(REUT_ch_PAT_CADB_PROG(channel), reg64);
+	}
+	const union reut_pat_cadb_mux_ctrl_reg cadb_mux_ctrl = {
+		.mux_0_ctrl = lmn_en ? REUT_MUX_LMN : REUT_MUX_LFSR,
+		.mux_1_ctrl = REUT_MUX_LFSR,
+		.mux_2_ctrl = REUT_MUX_LFSR,
+	};
+	mchbar_write32(REUT_ch_PAT_CADB_MUX_CTRL(channel), cadb_mux_ctrl.raw);
+	const union reut_pat_cl_mux_lmn_reg cadb_cl_mux_lmn = {
+		.en_sweep_freq = 1,
+		.l_counter     = 1,
+		.m_counter     = 1,
+		.n_counter     = 6,
+	};
+	mchbar_write32(REUT_ch_PAT_CADB_CL_MUX_LMN(channel), cadb_cl_mux_lmn.raw);
+	const uint16_t cadb_mux_seeds[NUM_CADB_MUX_SEEDS] = { 0x0ea1, 0xbeef, 0xdead };
+	set_cadb_patterns(channel, cadb_mux_seeds);
+}
+
+static uint32_t calc_rate(const uint32_t rate, const uint32_t lim, const uint8_t scale_bit)
+{
+	return rate > lim ? log2_ceil(rate - 1) : BIT(scale_bit) | rate;
+}
+
+void program_seq_addr(
+	const uint8_t channel,
+	const struct reut_box *reut_addr,
+	const bool log_seq_addr)
+{
+	const int loglevel = log_seq_addr ? BIOS_ERR : BIOS_NEVER;
+	const uint32_t div = 8;
+	union reut_seq_base_addr_reg reut_seq_addr_start = {
+		.col_addr  = reut_addr->col.start / div,
+		.row_addr  = reut_addr->row.start,
+		.bank_addr = reut_addr->bank.start,
+		.rank_addr = reut_addr->rank.start,
+	};
+	mchbar_write64(REUT_ch_SEQ_ADDR_START(channel), reut_seq_addr_start.raw);
+	reut_seq_addr_start.raw = mchbar_read64(REUT_ch_SEQ_ADDR_START(channel));
+	printk(loglevel, "\tStart column:     %u\n", reut_seq_addr_start.col_addr);
+	printk(loglevel, "\tStart row:        %u\n", reut_seq_addr_start.row_addr);
+	printk(loglevel, "\tStart bank:       %u\n", reut_seq_addr_start.bank_addr);
+	printk(loglevel, "\tStart rank:       %u\n", reut_seq_addr_start.rank_addr);
+	printk(loglevel, "\n");
+
+	union reut_seq_base_addr_reg reut_seq_addr_stop = {
+		.col_addr  = reut_addr->col.stop / div,
+		.row_addr  = reut_addr->row.stop,
+		.bank_addr = reut_addr->bank.stop,
+		.rank_addr = reut_addr->rank.stop,
+	};
+	mchbar_write64(REUT_ch_SEQ_ADDR_WRAP(channel), reut_seq_addr_stop.raw);
+	reut_seq_addr_stop.raw = mchbar_read64(REUT_ch_SEQ_ADDR_WRAP(channel));
+	printk(loglevel, "\tStop column:      %u\n", reut_seq_addr_stop.col_addr);
+	printk(loglevel, "\tStop row:         %u\n", reut_seq_addr_stop.row_addr);
+	printk(loglevel, "\tStop bank:        %u\n", reut_seq_addr_stop.bank_addr);
+	printk(loglevel, "\tStop rank:        %u\n", reut_seq_addr_stop.rank_addr);
+	printk(loglevel, "\n");
+
+	union reut_seq_misc_ctl_reg reut_seq_misc_ctl = {
+		.col_wrap_trigger_en  = reut_addr->col.wrap_trigger,
+		.row_wrap_trigger_en  = reut_addr->row.wrap_trigger,
+		.bank_wrap_trigger_en = reut_addr->bank.wrap_trigger,
+		.rank_wrap_trigger_en = reut_addr->rank.wrap_trigger,
+	};
+	mchbar_write32(REUT_ch_SEQ_MISC_CTL(channel), reut_seq_misc_ctl.raw);
+	printk(loglevel, "\tWrap column:      %u\n", reut_addr->col.wrap_trigger);
+	printk(loglevel, "\tWrap row:         %u\n", reut_addr->row.wrap_trigger);
+	printk(loglevel, "\tWrap bank:        %u\n", reut_addr->bank.wrap_trigger);
+	printk(loglevel, "\tWrap rank:        %u\n", reut_addr->rank.wrap_trigger);
+	printk(loglevel, "\n");
+
+	union reut_seq_addr_inc_ctl_reg reut_seq_addr_inc_ctl = {
+		.col_addr_update  = calc_rate(reut_addr->col.inc_rate,  31, 7),
+		.row_addr_update  = calc_rate(reut_addr->row.inc_rate,  15, 5),
+		.bank_addr_update = calc_rate(reut_addr->bank.inc_rate, 31, 7),
+		.rank_addr_update = calc_rate(reut_addr->rank.inc_rate, 31, 7),
+		.col_addr_increment  = reut_addr->col.inc_val,
+		.row_addr_increment  = reut_addr->row.inc_val,
+		.bank_addr_increment = reut_addr->bank.inc_val,
+		.rank_addr_increment = reut_addr->rank.inc_val,
+	};
+	printk(loglevel, "\tUpdRate column:   %u\n", reut_addr->col.inc_rate);
+	printk(loglevel, "\tUpdRate row:      %u\n", reut_addr->row.inc_rate);
+	printk(loglevel, "\tUpdRate bank:     %u\n", reut_addr->bank.inc_rate);
+	printk(loglevel, "\tUpdRate rank:     %u\n", reut_addr->rank.inc_rate);
+	printk(loglevel, "\n");
+	printk(loglevel, "\tUpdRateCR column: %u\n", reut_seq_addr_inc_ctl.col_addr_update);
+	printk(loglevel, "\tUpdRateCR row:    %u\n", reut_seq_addr_inc_ctl.row_addr_update);
+	printk(loglevel, "\tUpdRateCR bank:   %u\n", reut_seq_addr_inc_ctl.bank_addr_update);
+	printk(loglevel, "\tUpdRateCR rank:   %u\n", reut_seq_addr_inc_ctl.rank_addr_update);
+	printk(loglevel, "\n");
+	printk(loglevel, "\tUpdInc column:    %u\n", reut_seq_addr_inc_ctl.col_addr_increment);
+	printk(loglevel, "\tUpdInc row:       %u\n", reut_seq_addr_inc_ctl.row_addr_increment);
+	printk(loglevel, "\tUpdInc bank:      %u\n", reut_seq_addr_inc_ctl.bank_addr_increment);
+	printk(loglevel, "\tUpdInc rank:      %u\n", reut_seq_addr_inc_ctl.rank_addr_increment);
+	printk(loglevel, "\n");
+	mchbar_write64(REUT_ch_SEQ_ADDR_INC_CTL(channel), reut_seq_addr_inc_ctl.raw);
+}
+
+/*
+ * Early steppings take exponential (base 2) loopcount values,
+ * but later steppings take linear loopcount values elsewhere.
+ * Address the differences in register offset and format here.
+ */
+void program_loop_count(const struct sysinfo *ctrl, const uint8_t channel, const uint8_t lc_exp)
+{
+	if (ctrl->stepping >= STEPPING_C0) {
+		const uint32_t loopcount = lc_exp >= 32 ? 0 : BIT(lc_exp);
+		mchbar_write32(HSW_REUT_ch_SEQ_LOOP_COUNT(channel), loopcount);
+	} else {
+		const uint8_t loopcount = lc_exp >= 32 ? 0 : lc_exp + 1;
+		union reut_seq_cfg_reg reut_seq_cfg = {
+			.raw = mchbar_read64(REUT_ch_SEQ_CFG(channel)),
+		};
+		reut_seq_cfg.early_steppings_loop_count = loopcount;
+		mchbar_write64(REUT_ch_SEQ_CFG(channel), reut_seq_cfg.raw);
+	}
+}
+
+static inline void write_subseq(const uint8_t channel, const uint8_t idx, const uint32_t ssq)
+{
+	mchbar_write32(REUT_ch_SUBSEQ_x_CTL(channel, idx), ssq);
+}
+
+static void program_subseq(
+	struct sysinfo *const ctrl,
+	const uint8_t channel,
+	const enum reut_cmd_pat cmd_pat,
+	const uint32_t ss_a,
+	const uint32_t ss_b)
+{
+	switch (cmd_pat) {
+	case PAT_WR_RD_TA:
+		write_subseq(channel, 0, ss_a | SUBSEQ_B_WR);
+		for (uint8_t i = 1; i < 7; i++)
+			write_subseq(channel, i, ss_b | SUBSEQ_B_RD_WR);
+
+		write_subseq(channel, 7, ss_a | SUBSEQ_B_RD);
+		break;
+	case PAT_RD_WR_TA:
+		write_subseq(channel, 0, ss_b | SUBSEQ_B_WR_RD);
+		break;
+	case PAT_ODT_TA:
+		write_subseq(channel, 0, ss_a | SUBSEQ_B_WR);
+		write_subseq(channel, 1, ss_b | SUBSEQ_B_RD_WR);
+		write_subseq(channel, 2, ss_a | SUBSEQ_B_RD);
+		write_subseq(channel, 3, ss_b | SUBSEQ_B_WR_RD);
+		break;
+	default:
+		write_subseq(channel, 0, ss_a | SUBSEQ_B_WR);
+		write_subseq(channel, 1, ss_a | SUBSEQ_B_RD);
+		break;
+	}
+}
+
+void setup_io_test(
+	struct sysinfo *ctrl,
+	const uint8_t chanmask,
+	const enum reut_cmd_pat cmd_pat,
+	const uint16_t num_cl,
+	const uint8_t lc,
+	const struct reut_box *const reut_addr,
+	const enum test_stop soe,
+	const struct wdb_pat *const pat,
+	const uint8_t en_cadb,
+	const uint8_t subseq_wait)
+{
+	if (!chanmask)
+		die("\n%s: invalid chanmask\n", __func__, chanmask);
+
+	/*
+	 * Prepare variables needed for both channels.
+	 * Check for the cases where this MUST be 1: when
+	 * we manually walk through subseq ODT and TA Wr.
+	 */
+	uint8_t lc_exp = MAX(lc - log2_ceil(num_cl), 0);
+	if (cmd_pat == PAT_WR_RD_TA || cmd_pat == PAT_ODT_TA)
+		lc_exp = 0;
+
+	uint8_t num_clcr;
+	if (num_cl > 127) {
+		/* Assume exponential number */
+		num_clcr = log2_ceil(num_cl);
+	} else {
+		/* Set number of cache lines as linear number */
+		num_clcr = num_cl | BIT(7);
+	}
+
+	const uint16_t num_cl2 = 2 * num_cl;
+	uint8_t num_cl2cr;
+	if (num_cl2 > 127) {
+		/* Assume exponential number */
+		num_cl2cr = log2_ceil(num_cl2);
+	} else {
+		/* Set number of cache lines as linear number */
+		num_cl2cr = num_cl2 | BIT(7);
+	}
+
+	for (uint8_t channel = 0; channel < NUM_CHANNELS; channel++) {
+		if (!(chanmask & BIT(channel))) {
+			union reut_seq_cfg_reg reut_seq_cfg = {
+				.raw = mchbar_read64(REUT_ch_SEQ_CFG(channel)),
+			};
+			reut_seq_cfg.global_control = 0;
+			mchbar_write64(REUT_ch_SEQ_CFG(channel), reut_seq_cfg.raw);
+			continue;
+		}
+
+		/*
+		 * Program CADB
+		 */
+		mchbar_write8(REUT_ch_MISC_PAT_CADB_CTRL(channel), !!en_cadb);
+		if (en_cadb)
+			setup_cadb(ctrl, channel, 7, 8);
+
+		/*
+		 * Program sequence
+		 */
+		uint8_t subseq_start = 0;
+		uint8_t subseq_end   = 0;
+		switch (cmd_pat) {
+		case PAT_WR_RD:
+			subseq_end = 1;
+			break;
+		case PAT_WR:
+			break;
+		case PAT_RD:
+			subseq_start = 1;
+			subseq_end   = 1;
+			break;
+		case PAT_RD_WR_TA:
+			break;
+		case PAT_WR_RD_TA:
+			subseq_end = 7;
+			break;
+		case PAT_ODT_TA:
+			subseq_end = 3;
+			break;
+		default:
+			die("\n%s: Pattern type %u is invalid\n", __func__, cmd_pat);
+		}
+		const union reut_seq_cfg_reg reut_seq_cfg = {
+			.global_control            = 1,
+			.initialization_mode       = REUT_MODE_TEST,
+			.subsequence_start_pointer = subseq_start,
+			.subsequence_end_pointer   = subseq_end,
+			.start_test_delay          = 2,
+		};
+		mchbar_write64(REUT_ch_SEQ_CFG(channel), reut_seq_cfg.raw);
+		program_loop_count(ctrl, channel, lc_exp);
+		mchbar_write32(REUT_ch_SEQ_CTL(channel), (union reut_seq_ctl_reg) {
+			.clear_errors = 1,
+		}.raw);
+
+		/*
+		 * Program subsequences
+		 */
+		uint32_t subseq_a = 0;
+
+		/* Number of cachelines and scale */
+		subseq_a |= (num_clcr    & 0x00ff) << 0;
+		subseq_a |= (subseq_wait & 0x3fff) << 8;
+
+		/* Reset current base address to start */
+		subseq_a |= BIT(27);
+
+		uint32_t subseq_b = 0;
+
+		/* Number of cachelines and scale */
+		subseq_b |= (num_cl2cr   & 0x00ff) << 0;
+		subseq_b |= (subseq_wait & 0x3fff) << 8;
+
+		/* Reset current base address to start */
+		subseq_b |= BIT(27);
+
+		program_subseq(ctrl, channel, cmd_pat, subseq_a, subseq_b);
+
+		/* Program sequence address */
+		program_seq_addr(channel, reut_addr, false);
+
+		/* Program WDB */
+		const bool is_linear = pat->inc_rate < 32;
+		mchbar_write32(REUT_ch_WDB_CL_CTRL(channel), (union reut_pat_wdb_cl_ctrl_reg) {
+			.start_ptr = pat->start_ptr,
+			.end_ptr   = pat->stop_ptr,
+			.inc_rate  = is_linear ? pat->inc_rate : log2_ceil(pat->inc_rate),
+			.inc_scale = is_linear,
+		}.raw);
+
+		/* Enable LMN in LMN or CADB modes, used to create lots of supply noise */
+		const bool use_lmn = pat->dq_pattern == LMN_VA || pat->dq_pattern == CADB;
+		union reut_pat_wdb_cl_mux_cfg_reg pat_wdb_cl_mux_cfg = {
+			.mux_0_control = use_lmn ? REUT_MUX_LMN : REUT_MUX_LFSR,
+			.mux_1_control = REUT_MUX_LFSR,
+			.mux_2_control = REUT_MUX_LFSR,
+			.ecc_data_source_sel = 1,
+		};
+
+		/* Program LFSR save/restore, too complex unless everything is power of 2 */
+		if (cmd_pat == PAT_ODT_TA || cmd_pat == PAT_WR_RD_TA) {
+			pat_wdb_cl_mux_cfg.reload_lfsr_seed_rate = log2_ceil(num_cl) + 1;
+			pat_wdb_cl_mux_cfg.save_lfsr_seed_rate   = 1;
+		}
+		mchbar_write32(REUT_ch_PAT_WDB_CL_MUX_CFG(channel), pat_wdb_cl_mux_cfg.raw);
+
+		/* Inversion mask is not used */
+		mchbar_write32(REUT_ch_PAT_WDB_INV(channel), 0);
+
+		/* Program error checking */
+		const union reut_err_ctl_reg reut_err_ctl = {
+			.selective_err_enable_cacheline = 0xff,
+			.selective_err_enable_chunk     = 0xff,
+			.stop_on_error_control          = soe,
+			.stop_on_nth_error              = 1,
+		};
+		mchbar_write32(REUT_ch_ERR_CONTROL(channel), reut_err_ctl.raw);
+		mchbar_write64(REUT_ch_ERR_DATA_MASK(channel), 0);
+		mchbar_write8(REUT_ch_ERR_ECC_MASK(channel), 0);
+	}
+
+	/* Always do a ZQ short before the beginning of a test */
+	reut_issue_zq(ctrl, chanmask, ZQ_SHORT);
+}
+
+void setup_io_test_cadb(
+	struct sysinfo *ctrl,
+	const uint8_t chanmask,
+	const uint8_t lc,
+	const enum test_stop soe)
+{
+	const struct reut_box reut_addr = {
+		.rank = {
+			.start    = 0,
+			.stop     = 0,
+			.inc_rate = 32,
+			.inc_val  = 1,
+		},
+		.bank = {
+			.start    = 0,
+			.stop     = 7,
+			.inc_rate = 3,
+			.inc_val  = 1,
+		},
+		.row = {
+			.start    = 0,
+			.stop     = 2047,
+			.inc_rate = 3,
+			.inc_val  = 73,
+		},
+		.col = {
+			.start    = 0,
+			.stop     = 1023,
+			.inc_rate = 0,
+			.inc_val  = 53,
+		},
+	};
+	const struct wdb_pat pattern = {
+		.start_ptr  = 0,
+		.stop_ptr   = 9,
+		.inc_rate   = 4,
+		.dq_pattern = CADB,
+	};
+	setup_io_test(
+		ctrl,
+		chanmask,
+		PAT_WR_RD,
+		128,
+		lc,
+		&reut_addr,
+		soe,
+		&pattern,
+		1,
+		0);
+
+	ctrl->dq_pat_lc = MAX(lc - 2 - 3, 0) + 1;
+	ctrl->dq_pat = CADB;
+}
+
+void setup_io_test_basic_va(
+	struct sysinfo *ctrl,
+	const uint8_t chanmask,
+	const uint8_t lc,
+	const enum test_stop soe)
+{
+	const uint32_t spread = 8;
+	const struct reut_box reut_addr = {
+		.rank = {
+			.start    = 0,
+			.stop     = 0,
+			.inc_rate = 32,
+			.inc_val  = 1,
+		},
+		.col = {
+			.start    = 0,
+			.stop     = 1023,
+			.inc_rate = 0,
+			.inc_val  = 1,
+		},
+	};
+	const struct wdb_pat pattern = {
+		.start_ptr  = 0,
+		.stop_ptr   = spread - 1,
+		.inc_rate   = 4,
+		.dq_pattern = BASIC_VA,
+	};
+	setup_io_test(
+		ctrl,
+		chanmask,
+		PAT_WR_RD,
+		128,
+		lc,
+		&reut_addr,
+		soe,
+		&pattern,
+		0,
+		0);
+
+	ctrl->dq_pat_lc = MAX(lc - 8, 0) + 1;
+	ctrl->dq_pat = BASIC_VA;
+}
+
+void setup_io_test_mpr(
+	struct sysinfo *ctrl,
+	const uint8_t chanmask,
+	const uint8_t lc,
+	const enum test_stop soe)
+{
+	const struct reut_box reut_addr_ddr = {
+		.rank = {
+			.start    = 0,
+			.stop     = 0,
+			.inc_rate = 32,
+			.inc_val  = 1,
+		},
+		.col = {
+			.start    = 0,
+			.stop     = 1023,
+			.inc_rate = 0,
+			.inc_val  = 1,
+		},
+	};
+	const struct reut_box reut_addr_lpddr = {
+		.bank = {
+			.start    = 4,
+			.stop     = 4,
+			.inc_rate = 0,
+			.inc_val  = 0,
+		},
+	};
+	const struct wdb_pat pattern = {
+		.start_ptr  = 0,
+		.stop_ptr   = 9,
+		.inc_rate   = 4,
+		.dq_pattern = BASIC_VA,
+	};
+	setup_io_test(
+		ctrl,
+		chanmask,
+		PAT_RD,
+		128,
+		lc,
+		ctrl->lpddr ? &reut_addr_lpddr : &reut_addr_ddr,
+		soe,
+		&pattern,
+		0,
+		0);
+
+	ctrl->dq_pat_lc = 1;
+	ctrl->dq_pat = BASIC_VA;
+}
+
+uint8_t select_reut_ranks(struct sysinfo *ctrl, const uint8_t channel, uint8_t rankmask)
+{
+	rankmask &= ctrl->rankmap[channel];
+
+	uint8_t rank_count = 0;
+	uint32_t rank_log_to_phys = 0;
+	for (uint8_t rank = 0; rank < NUM_SLOTRANKS; rank++) {
+		if (!rank_in_mask(rank, rankmask))
+			continue;
+
+		rank_log_to_phys |= rank << (4 * rank_count);
+		rank_count++;
+	}
+	mchbar_write32(REUT_ch_RANK_LOG_TO_PHYS(channel), rank_log_to_phys);
+
+	union reut_seq_cfg_reg reut_seq_cfg = {
+		.raw = mchbar_read64(REUT_ch_SEQ_CFG(channel)),
+	};
+	if (!rank_count) {
+		reut_seq_cfg.global_control = 0;
+		mchbar_write64(REUT_ch_SEQ_CFG(channel), reut_seq_cfg.raw);
+		return 0;
+	}
+	union reut_seq_base_addr_reg reut_seq_addr_stop = {
+		.raw = mchbar_read64(REUT_ch_SEQ_ADDR_WRAP(channel)),
+	};
+	reut_seq_addr_stop.rank_addr = rank_count - 1;
+	mchbar_write64(REUT_ch_SEQ_ADDR_WRAP(channel), reut_seq_addr_stop.raw);
+
+	reut_seq_cfg.global_control = 1;
+	mchbar_write64(REUT_ch_SEQ_CFG(channel), reut_seq_cfg.raw);
+	return BIT(channel);
+}
+
+void run_mpr_io_test(const bool clear_errors)
+{
+	io_reset();
+	mchbar_write32(REUT_GLOBAL_CTL, (union reut_seq_ctl_reg) {
+		.start_test   = 1,
+		.clear_errors = clear_errors,
+	}.raw);
+	tick_delay(2);
+	io_reset();
+	tick_delay(2);
+	mchbar_write32(REUT_GLOBAL_CTL, (union reut_seq_ctl_reg) {
+		.stop_test = 1,
+	}.raw);
+}
+
+static uint8_t get_num_tests(const uint8_t dq_pat)
+{
+	switch (dq_pat) {
+	case SEGMENT_WDB:	return 4;
+	case CADB:		return 7;
+	case TURN_AROUND_WR:	return 8;
+	case TURN_AROUND_ODT:	return 4;
+	case RD_RD_TA:		return 2;
+	case RD_RD_TA_ALL:	return 8;
+	default:		return 1;
+	}
+}
+
+uint8_t run_io_test(
+	struct sysinfo *const ctrl,
+	const uint8_t chanmask,
+	const uint8_t dq_pat,
+	const bool clear_errors)
+{
+	/* SEGMENT_WDB only runs 4 tests */
+	const uint8_t segment_wdb_lc[4] = { 0, 0, 4, 2 };
+	const union reut_pat_wdb_cl_ctrl_reg pat_wdb_cl[4] = {
+		[0] = {
+			.start_ptr =  0,
+			.end_ptr   =  9,
+			.inc_rate  = 25,
+			.inc_scale = SCALE_LINEAR,
+		},
+		[1] = {
+			.start_ptr =  0,
+			.end_ptr   =  9,
+			.inc_rate  = 25,
+			.inc_scale = SCALE_LINEAR,
+		},
+		[2] = {
+			.start_ptr = 10,
+			.end_ptr   = 63,
+			.inc_rate  = 19,
+			.inc_scale = SCALE_LINEAR,
+		},
+		[3] = {
+			.start_ptr = 10,
+			.end_ptr   = 63,
+			.inc_rate  = 10,
+			.inc_scale = SCALE_LINEAR,
+		},
+	};
+	const bool is_turnaround = dq_pat == RD_RD_TA || dq_pat == RD_RD_TA_ALL;
+	const uint8_t num_tests = get_num_tests(dq_pat);
+	union tc_bank_rank_a_reg tc_bank_rank_a[NUM_CHANNELS] = { 0 };
+	if (is_turnaround) {
+		for (uint8_t channel = 0; channel < NUM_CHANNELS; channel++) {
+			if (!(chanmask & BIT(channel)))
+				continue;
+
+			tc_bank_rank_a[channel].raw = ctrl->tc_bankrank_a[channel].raw;
+		}
+	}
+	for (uint8_t t = 0; t < num_tests; t++) {
+		for (uint8_t channel = 0; channel < NUM_CHANNELS; channel++) {
+			if (!(chanmask & BIT(channel)))
+				continue;
+
+			if (dq_pat == SEGMENT_WDB) {
+				mchbar_write32(REUT_ch_WDB_CL_CTRL(channel), pat_wdb_cl[t].raw);
+				/*
+				 * Skip programming LFSR save/restore. Too complex
+				 * unless power of 2. Program desired loopcount.
+				 */
+				const uint8_t pat_lc = ctrl->dq_pat_lc + segment_wdb_lc[t];
+				program_loop_count(ctrl, channel, pat_lc);
+			} else if (dq_pat == CADB) {
+				setup_cadb(ctrl, channel, num_tests, t);
+			} else if (dq_pat == TURN_AROUND_WR || dq_pat == TURN_AROUND_ODT) {
+				union reut_seq_cfg_reg reut_seq_cfg = {
+					.raw = mchbar_read64(REUT_ch_SEQ_CFG(channel)),
+				};
+				reut_seq_cfg.subsequence_start_pointer = t;
+				reut_seq_cfg.subsequence_end_pointer   = t;
+				mchbar_write64(REUT_ch_SEQ_CFG(channel), reut_seq_cfg.raw);
+				union reut_seq_addr_inc_ctl_reg addr_inc_ctl = {
+					.raw = mchbar_read64(REUT_ch_SEQ_ADDR_INC_CTL(channel)),
+				};
+				uint8_t ta_inc_rate = 1;
+				if (dq_pat == TURN_AROUND_WR && (t == 0 || t == 7))
+					ta_inc_rate = 0;
+				else if (dq_pat == TURN_AROUND_ODT && (t == 0 || t == 2))
+					ta_inc_rate = 0;
+
+				/* Program increment rate as linear value */
+				addr_inc_ctl.rank_addr_update = BIT(7) | ta_inc_rate;
+				addr_inc_ctl.col_addr_update  = BIT(7) | ta_inc_rate;
+				mchbar_write64(REUT_ch_SEQ_ADDR_INC_CTL(channel),
+						addr_inc_ctl.raw);
+			} else if (dq_pat == RD_RD_TA) {
+				tc_bank_rank_a[channel].tRDRD_sr = (t == 0) ? 4 : 5;
+				mchbar_write32(TC_BANK_RANK_A_ch(channel),
+						tc_bank_rank_a[channel].raw);
+			} else if (dq_pat == RD_RD_TA_ALL) {
+				/*
+				 * Program tRDRD for SR and DR. Run 8 tests, covering
+				 * tRDRD_sr = 4, 5, 6, 7 and tRDRD_dr = min, +1, +2, +3
+				 */
+				const uint32_t tRDRD_dr = ctrl->tc_bankrank_a[channel].tRDRD_dr;
+				tc_bank_rank_a[channel].tRDRD_sr = (t % 4) + 4;
+				tc_bank_rank_a[channel].tRDRD_dr = (t % 4) + tRDRD_dr;
+				mchbar_write32(TC_BANK_RANK_A_ch(channel),
+						tc_bank_rank_a[channel].raw);
+
+				/* Program linear rank increment rate */
+				union reut_seq_addr_inc_ctl_reg addr_inc_ctl = {
+					.raw = mchbar_read64(REUT_ch_SEQ_ADDR_INC_CTL(channel)),
+				};
+				addr_inc_ctl.rank_addr_update = BIT(7) | (t / 4) ? 0 : 31;
+				mchbar_write64(REUT_ch_SEQ_ADDR_INC_CTL(channel),
+						addr_inc_ctl.raw);
+			}
+		}
+		bool test_soe = false;
+		for (uint8_t channel = 0; channel < NUM_CHANNELS; channel++) {
+			if (!(chanmask & BIT(channel)))
+				continue;
+
+			const union reut_err_ctl_reg reut_err_ctl = {
+				.raw = mchbar_read32(REUT_ch_ERR_CONTROL(channel)),
+			};
+			const uint8_t soe = reut_err_ctl.stop_on_error_control;
+			if (soe != NSOE) {
+				test_soe = true;
+				break;
+			}
+		}
+		io_reset();
+		mchbar_write32(REUT_GLOBAL_CTL, (union reut_seq_ctl_reg) {
+			.start_test   = 1,
+			.clear_errors = clear_errors && t == 0,
+		}.raw);
+		struct mono_time prev, curr;
+		timer_monotonic_get(&prev);
+		union reut_global_err_reg global_err;
+		do {
+			global_err.raw = mchbar_read32(REUT_GLOBAL_ERR);
+			/** TODO: Clean up this mess **/
+			timer_monotonic_get(&curr);
+			if (mono_time_diff_microseconds(&prev, &curr) > 1000 * 1000) {
+				mchbar_write32(REUT_GLOBAL_CTL, (union reut_seq_ctl_reg) {
+					.stop_test = 1,
+				}.raw);
+				printk(BIOS_ERR, "REUT timed out, ch_done: %x\n",
+					global_err.ch_test_done);
+				break;
+			}
+		} while ((global_err.ch_test_done & chanmask) != chanmask);
+		if (test_soe && global_err.ch_error & chanmask)
+			break;
+	}
+	if (is_turnaround) {
+		for (uint8_t channel = 0; channel < NUM_CHANNELS; channel++) {
+			if (!(chanmask & BIT(channel)))
+				continue;
+
+			mchbar_write32(TC_BANK_RANK_A_ch(channel),
+				ctrl->tc_bankrank_a[channel].raw);
+		}
+	}
+	return ((union reut_global_err_reg)mchbar_read32(REUT_GLOBAL_ERR)).ch_error;
+}
diff --git a/src/northbridge/intel/haswell/registers/mchbar.h b/src/northbridge/intel/haswell/registers/mchbar.h
index f8408e51a0..817a9f8bf8 100644
--- a/src/northbridge/intel/haswell/registers/mchbar.h
+++ b/src/northbridge/intel/haswell/registers/mchbar.h
@@ -94,20 +94,35 @@
 #define TC_BANK_RANK_D_ch(ch)			_MCMAIN_C(0x4014, ch)
 #define SC_ROUNDT_LAT_ch(ch)			_MCMAIN_C(0x4024, ch)
 
+#define REUT_ch_PAT_WDB_CL_MUX_CFG(ch)		_MCMAIN_C(0x4040, ch)
+
 #define REUT_ch_PAT_WDB_CL_MUX_WR_x(ch, x)	_MCMAIN_C_X(0x4048, ch, x) /* x in 0 .. 2 */
 #define REUT_ch_PAT_WDB_CL_MUX_RD_x(ch, x)	_MCMAIN_C_X(0x4054, ch, x) /* x in 0 .. 2 */
 
 #define REUT_ch_PAT_WDB_CL_MUX_LMN(ch)		_MCMAIN_C(0x4078, ch)
 
+#define REUT_ch_PAT_WDB_INV(ch)			_MCMAIN_C(0x4084, ch)
+
+#define REUT_ch_ERR_CONTROL(ch)			_MCMAIN_C(0x4098, ch)
+#define REUT_ch_ERR_ECC_MASK(ch)		_MCMAIN_C(0x409c, ch)
+
 #define SC_WR_ADD_DELAY_ch(ch)			_MCMAIN_C(0x40d0, ch)
 
+#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_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)
+#define REUT_ch_PAT_CADB_MUX_x(ch, x)		_MCMAIN_C_X(0x41a4, ch, x) /* x in 0 .. 2 */
 
+#define REUT_ch_PAT_CADB_CL_MUX_LMN(ch)		_MCMAIN_C(0x41b0, ch)
 #define REUT_ch_PAT_CADB_WRITE_PTR(ch)		_MCMAIN_C(0x41bc, ch)
 #define REUT_ch_PAT_CADB_PROG(ch)		_MCMAIN_C(0x41c0, ch)
 
+#define REUT_ch_WDB_CL_CTRL(ch)			_MCMAIN_C(0x4200, ch)
+
 #define TC_ZQCAL_ch(ch)				_MCMAIN_C(0x4290, ch)
 #define TC_RFP_ch(ch)				_MCMAIN_C(0x4294, ch)
 #define TC_RFTP_ch(ch)				_MCMAIN_C(0x4298, ch)
@@ -119,12 +134,27 @@
 #define QCLK_ch_LDAT_SDAT(ch)			_MCMAIN_C(0x42d4, ch)
 #define QCLK_ch_LDAT_DATA_IN_x(ch, x)		_MCMAIN_C_X(0x42dc, ch, x) /* x in 0 .. 1 */
 
+#define REUT_GLOBAL_CTL				0x4800
 #define REUT_GLOBAL_ERR				0x4804
 
+#define REUT_ch_SUBSEQ_x_CTL(ch, x)		(0x4808 + 40 * (ch) + 4 * (x))
+
 #define REUT_ch_SEQ_CFG(ch)			(0x48a8 + 8 * (ch))
 
 #define REUT_ch_SEQ_CTL(ch)			(0x48b8 + 4 * (ch))
 
+#define REUT_ch_SEQ_ADDR_START(ch)		(0x48d8 + 8 * (ch))
+
+#define REUT_ch_SEQ_ADDR_WRAP(ch)		(0x48e8 + 8 * (ch))
+
+#define REUT_ch_SEQ_MISC_CTL(ch)		(0x4908 + 4 * (ch))
+
+#define REUT_ch_SEQ_ADDR_INC_CTL(ch)		(0x4910 + 8 * (ch))
+
+#define REUT_ch_RANK_LOG_TO_PHYS(ch)		(0x4930 + 4 * (ch)) /* 4 bits per rank */
+
+#define HSW_REUT_ch_SEQ_LOOP_COUNT(ch)		(0x4980 + 4 * (ch)) /* *** only on C0 *** */
+
 /* MCMAIN broadcast */
 #define MCSCHEDS_CBIT		0x4c20
 
-- 
2.39.2