lbmk/config/coreboot/default/patches/0045-haswell-NRI-Configure-initial-MC-settings.patch

From 0001039f5ea6be6700a453f511069be2ce1b4e7e Mon Sep 17 00:00:00 2001
From: Angel Pons <th3fanbus@gmail.com>
Date: Sat, 7 May 2022 17:22:07 +0200
Subject: [PATCH 03/17] haswell NRI: Configure initial MC settings

Program initial memory controller settings. Many of these values will be
adjusted later during training.

Change-Id: If33846b51cb1bab5d0458fe626e13afb1bdc900e
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
---
 .../intel/haswell/native_raminit/Makefile.mk  |   2 +
 .../haswell/native_raminit/configure_mc.c     | 822 ++++++++++++++++++
 .../haswell/native_raminit/raminit_main.c     |   2 +
 .../haswell/native_raminit/raminit_native.h   | 101 +++
 .../haswell/native_raminit/reg_structs.h      | 405 +++++++++
 .../haswell/native_raminit/timings_refresh.c  |  13 +
 .../intel/haswell/registers/mchbar.h          |  94 ++
 7 files changed, 1439 insertions(+)
 create mode 100644 src/northbridge/intel/haswell/native_raminit/configure_mc.c
 create mode 100644 src/northbridge/intel/haswell/native_raminit/reg_structs.h
 create mode 100644 src/northbridge/intel/haswell/native_raminit/timings_refresh.c

diff --git a/src/northbridge/intel/haswell/native_raminit/Makefile.mk b/src/northbridge/intel/haswell/native_raminit/Makefile.mk
index 2769e0bbb4..fc55277a65 100644
--- a/src/northbridge/intel/haswell/native_raminit/Makefile.mk
+++ b/src/northbridge/intel/haswell/native_raminit/Makefile.mk
@@ -1,8 +1,10 @@
 ## SPDX-License-Identifier: GPL-2.0-or-later
 
+romstage-y += configure_mc.c
 romstage-y += lookup_timings.c
 romstage-y += init_mpll.c
 romstage-y += io_comp_control.c
 romstage-y += raminit_main.c
 romstage-y += raminit_native.c
 romstage-y += spd_bitmunching.c
+romstage-y += timings_refresh.c
diff --git a/src/northbridge/intel/haswell/native_raminit/configure_mc.c b/src/northbridge/intel/haswell/native_raminit/configure_mc.c
new file mode 100644
index 0000000000..88249725a7
--- /dev/null
+++ b/src/northbridge/intel/haswell/native_raminit/configure_mc.c
@@ -0,0 +1,822 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#include <assert.h>
+#include <commonlib/bsd/clamp.h>
+#include <console/console.h>
+#include <delay.h>
+#include <lib.h>
+#include <northbridge/intel/haswell/haswell.h>
+#include <string.h>
+#include <types.h>
+
+#include "raminit_native.h"
+
+static void program_misc_control(struct sysinfo *ctrl)
+{
+	if (!is_hsw_ult())
+		return;
+
+	const union ddr_scram_misc_control_reg ddr_scram_misc_ctrl = {
+		.ddr_no_ch_interleave = !ctrl->dq_pins_interleaved,
+		.lpddr_mode           = ctrl->lpddr,
+		.cke_mapping_ch0      = ctrl->lpddr ? ctrl->lpddr_cke_rank_map[0] : 0,
+		.cke_mapping_ch1      = ctrl->lpddr ? ctrl->lpddr_cke_rank_map[1] : 0,
+	};
+	mchbar_write32(DDR_SCRAM_MISC_CONTROL, ddr_scram_misc_ctrl.raw);
+}
+
+static void program_mrc_revision(void)
+{
+	mchbar_write32(MRC_REVISION, 0x01090000);	/* MRC 1.9.0 Build 0 */
+}
+
+static void program_ranks_used(struct sysinfo *ctrl)
+{
+	for (uint8_t channel = 0; channel < NUM_CHANNELS; channel++) {
+		mchbar_write8(MC_INIT_STATE_ch(channel), ctrl->rankmap[channel]);
+		if (!does_ch_exist(ctrl, channel)) {
+			mchbar_write32(DDR_CLK_ch_RANKS_USED(channel), 0);
+			mchbar_write32(DDR_CTL_ch_CTL_RANKS_USED(channel), 0);
+			mchbar_write32(DDR_CKE_ch_CTL_RANKS_USED(channel), 0);
+			continue;
+		}
+		uint32_t clk_ranks_used = ctrl->rankmap[channel];
+		if (ctrl->lpddr) {
+			/* With LPDDR, the clock usage goes by group instead */
+			clk_ranks_used = 0;
+			for (uint8_t group = 0; group < NUM_GROUPS; group++) {
+				if (ctrl->dq_byte_map[channel][CT_ITERATION_CLOCK][group])
+					clk_ranks_used |= BIT(group);
+			}
+		}
+		mchbar_write32(DDR_CLK_ch_RANKS_USED(channel), clk_ranks_used);
+
+		uint32_t ctl_ranks_used = ctrl->rankmap[channel];
+		if (is_hsw_ult()) {
+			/* Set ODT disable bits */
+			/** TODO: May need to do this after JEDEC reset/init **/
+			if (ctrl->lpddr && ctrl->lpddr_dram_odt)
+				ctl_ranks_used |= 2 << 4;	/* ODT is used on rank 0 */
+			else
+				ctl_ranks_used |= 3 << 4;
+		}
+		mchbar_write32(DDR_CTL_ch_CTL_RANKS_USED(channel), ctl_ranks_used);
+
+		uint32_t cke_ranks_used = ctrl->rankmap[channel];
+		if (ctrl->lpddr) {
+			/* Use CKE-to-rank mapping for LPDDR */
+			const uint8_t cke_rank_map = ctrl->lpddr_cke_rank_map[channel];
+			cke_ranks_used = 0;
+			for (uint8_t rank = 0; rank < NUM_SLOTRANKS; rank++) {
+				/* ULT only has 2 ranks per channel */
+				if (rank >= 2)
+					break;
+
+				if (!rank_in_ch(ctrl, rank, channel))
+					continue;
+
+				for (uint8_t cke = 0; cke < 4; cke++) {
+					if (rank == ((cke_rank_map >> cke) & 1))
+						cke_ranks_used |= BIT(cke);
+				}
+			}
+		}
+		mchbar_write32(DDR_CKE_ch_CTL_RANKS_USED(channel), cke_ranks_used);
+	}
+}
+
+static const uint8_t rxb_trad[2][5][4] = {
+	{	/* Vdd low */
+		/* 1067 MT/s,    1333 MT/s,    1600 MT/s,    1867 MT/s,    2133 MT/s, */
+		{4, 3, 3, 2}, {4, 4, 3, 2}, {5, 4, 3, 3}, {5, 4, 4, 3}, {5, 4, 4, 3},
+	},
+	{	/* Vdd hi */
+		/* 1067 MT/s,    1333 MT/s,    1600 MT/s,    1867 MT/s,    2133 MT/s, */
+		{4, 3, 3, 2}, {4, 4, 3, 2}, {5, 4, 3, 3}, {5, 4, 4, 3}, {4, 4, 3, 3},
+	},
+};
+
+static const uint8_t rxb_ultx[2][3][4] = {
+	{	/* Vdd low */
+		/* 1067 MT/s,    1333 MT/s,    1600 MT/s, */
+		{5, 6, 6, 5}, {5, 6, 6, 5}, {4, 6, 6, 6},
+	},
+	{	/* Vdd hi */
+		/* 1067 MT/s,    1333 MT/s,    1600 MT/s, */
+		{7, 6, 6, 5}, {7, 6, 6, 5}, {7, 6, 6, 6},
+	},
+};
+
+uint8_t get_rx_bias(const struct sysinfo *ctrl)
+{
+	const bool is_ult = is_hsw_ult();
+	const bool vddhi  = ctrl->vdd_mv > 1350;
+	const uint8_t max_rxf = is_ult ? ARRAY_SIZE(rxb_ultx[0]) : ARRAY_SIZE(rxb_trad[0]);
+	const uint8_t ref_clk = ctrl->base_freq == 133 ? 4 : 6;
+	const uint8_t rx_f    = clamp_s8(0, ctrl->multiplier - ref_clk, max_rxf - 1);
+	const uint8_t rx_cb   = mchbar_read32(DDR_CLK_CB_STATUS) & 0x3;
+	if (is_ult)
+		return rxb_ultx[vddhi][rx_f][rx_cb];
+	else
+		return rxb_trad[vddhi][rx_f][rx_cb];
+}
+
+static void program_ddr_data(struct sysinfo *ctrl, const bool dis_odt_static, const bool vddhi)
+{
+	const bool is_ult = is_hsw_ult();
+
+	for (uint8_t rank = 0; rank < NUM_SLOTRANKS; rank++) {
+		if (!does_rank_exist(ctrl, rank))
+			continue;
+
+		const union ddr_data_rx_train_rank_reg rx_train = {
+			.rcven = 64,
+			.dqs_p = 32,
+			.dqs_n = 32,
+		};
+		mchbar_write32(DDR_DATA_RX_TRAIN_RANK(rank), rx_train.raw);
+		mchbar_write32(DDR_DATA_RX_PER_BIT_RANK(rank), 0x88888888);
+
+		const union ddr_data_tx_train_rank_reg tx_train = {
+			.tx_eq     = TXEQFULLDRV | 11,
+			.dq_delay  = 96,
+			.dqs_delay = 64,
+		};
+		mchbar_write32(DDR_DATA_TX_TRAIN_RANK(rank), tx_train.raw);
+		mchbar_write32(DDR_DATA_TX_PER_BIT_RANK(rank), 0x88888888);
+
+		for (uint8_t channel = 0; channel < NUM_CHANNELS; channel++) {
+			for (uint8_t byte = 0; byte < ctrl->lanes; byte++) {
+				ctrl->tx_dq[channel][rank][byte] = tx_train.dq_delay;
+				ctrl->txdqs[channel][rank][byte] = tx_train.dqs_delay;
+				ctrl->tx_eq[channel][rank][byte] = tx_train.tx_eq;
+
+				ctrl->rcven[channel][rank][byte]  = rx_train.rcven;
+				ctrl->rxdqsp[channel][rank][byte] = rx_train.dqs_p;
+				ctrl->rxdqsn[channel][rank][byte] = rx_train.dqs_n;
+				ctrl->rx_eq[channel][rank][byte]  = rx_train.rx_eq;
+			}
+		}
+	}
+	mchbar_write32(DDR_DATA_TX_XTALK, 0);
+	mchbar_write32(DDR_DATA_RX_OFFSET_VDQ, 0x88888888);
+	mchbar_write32(DDR_DATA_OFFSET_TRAIN, 0);
+	mchbar_write32(DDR_DATA_OFFSET_COMP, 0);
+
+	const union ddr_data_control_0_reg data_control_0 = {
+		.internal_clocks_on = !is_ult,
+		.data_vccddq_hi     = vddhi,
+		.disable_odt_static = dis_odt_static,
+		.lpddr_mode         = ctrl->lpddr,
+		.odt_samp_extend_en = ctrl->lpddr,
+		.early_rleak_en     = ctrl->lpddr && ctrl->stepping >= STEPPING_C0,
+	};
+	mchbar_write32(DDR_DATA_CONTROL_0, data_control_0.raw);
+
+	const union ddr_data_control_1_reg data_control_1 = {
+		.dll_mask             = 1,
+		.rx_bias_ctl          = get_rx_bias(ctrl),
+		.odt_delay            = -2,
+		.odt_duration         = 7,
+		.sense_amp_delay      = -2,
+		.sense_amp_duration   = 7,
+	};
+	mchbar_write32(DDR_DATA_CONTROL_1, data_control_1.raw);
+
+	clear_data_offset_train_all(ctrl);
+
+	/* Stagger byte turn-on to reduce dI/dT */
+	const uint8_t byte_stagger[] = { 0, 4, 1, 5, 2, 6, 3, 7, 8 };
+	const uint8_t latency = 2 * ctrl->tAA - 6;
+	for (uint8_t channel = 0; channel < NUM_CHANNELS; channel++) {
+		if (!does_ch_exist(ctrl, channel))
+			continue;
+
+		union ddr_data_control_2_reg data_control_2 = {
+			.raw = 0,
+		};
+		if (is_ult) {
+			data_control_2.rx_dqs_amp_offset = 8;
+			data_control_2.rx_clk_stg_num    = 0x1f;
+			data_control_2.leaker_comp       = ctrl->lpddr ? 3 : 0;
+		}
+		for (uint8_t byte = 0; byte < ctrl->lanes; byte++) {
+			const uint8_t stg = latency * byte_stagger[byte] / ctrl->lanes;
+			data_control_2.rx_stagger_ctl = stg & 0x1f;
+			mchbar_write32(DQ_CONTROL_2(channel, byte), data_control_2.raw);
+			ctrl->data_offset_comp[channel][byte] = 0;
+			ctrl->dq_control_1[channel][byte] = data_control_1.raw;
+			ctrl->dq_control_2[channel][byte] = data_control_2.raw;
+		}
+		ctrl->dq_control_0[channel] = data_control_0.raw;
+	}
+}
+
+static void program_vsshi_control(struct sysinfo *ctrl, const uint16_t vsshi_mv)
+{
+	const uint32_t vsshi_control_reg = is_hsw_ult() ? 0x366c : 0x306c;
+	const union ddr_comp_vsshi_control_reg ddr_vsshi_control = {
+		.vsshi_target    = (vsshi_mv * 192) / ctrl->vdd_mv - 20,
+		.hi_bw_divider   = 1,
+		.lo_bw_divider   = 1,
+		.bw_error        = 2,
+		.panic_driver_en = 1,
+		.panic_voltage   = 24 / 8, /* Voltage in 8mV steps */
+		.gain_boost      = 1,
+	};
+	mchbar_write32(vsshi_control_reg, ddr_vsshi_control.raw);
+	mchbar_write32(DDR_COMP_VSSHI_CONTROL, ddr_vsshi_control.raw);
+}
+
+static void calc_vt_slope_code(const uint16_t slope, uint8_t *best_a, uint8_t *best_b)
+{
+	const int16_t coding[] = {0, -125, -62, -31, 250, 125, 62, 31};
+	*best_a = 0;
+	*best_b = 0;
+	int16_t best_err = slope;
+	for (uint8_t b = 0; b < ARRAY_SIZE(coding); b++) {
+		for (uint8_t a = b; a < ARRAY_SIZE(coding); a++) {
+			int16_t	error = slope - (coding[a] + coding[b]);
+			if (error < 0)
+				error = -error;
+
+			if (error < best_err) {
+				best_err = error;
+				*best_a = a;
+				*best_b = b;
+			}
+		}
+	}
+}
+
+static void program_dimm_vref(struct sysinfo *ctrl, const uint16_t vccio_mv, const bool vddhi)
+{
+	const bool is_ult = is_hsw_ult();
+
+	/* Static values for ULT */
+	uint8_t vt_slope_a = 4;
+	uint8_t vt_slope_b = 0;
+	if (!is_ult) {
+		/* On non-ULT, compute best slope code */
+		const uint16_t vt_slope = 1500 * vccio_mv / ctrl->vdd_mv - 1000;
+		calc_vt_slope_code(vt_slope, &vt_slope_a, &vt_slope_b);
+	}
+	const union ddr_data_vref_control_reg ddr_vref_control = {
+		.hi_bw_divider  = is_ult ? 0 : 3,
+		.lo_bw_divider  = 3,
+		.sample_divider = is_ult ? 1 : 3,
+		.slow_bw_error  = 1,
+		.hi_bw_enable   = 1,
+		.vt_slope_b     = vt_slope_b,
+		.vt_slope_a     = vt_slope_a,
+		.vt_offset      = 0,
+	};
+	mchbar_write32(is_ult ? 0xf68 : 0xf6c, ddr_vref_control.raw); /* Use CH1 byte 7 */
+
+	const union ddr_data_vref_adjust_reg ddr_vref_adjust = {
+		.en_dimm_vref_ca  = 1,
+		.en_dimm_vref_ch0 = 1,
+		.en_dimm_vref_ch1 = 1,
+		.vccddq_hi_qnnn_h = vddhi,
+		.hi_z_timer_ctrl  = 3,
+	};
+	ctrl->dimm_vref = ddr_vref_adjust;
+	mchbar_write32(DDR_DATA_VREF_ADJUST, ddr_vref_adjust.raw);
+}
+
+static uint32_t pi_code(const uint32_t code)
+{
+	return code << 21 | code << 14 | code << 7 | code << 0;
+}
+
+static void program_ddr_ca(struct sysinfo *ctrl, const bool vddhi)
+{
+	for (uint8_t channel = 0; channel < NUM_CHANNELS; channel++) {
+		if (!does_ch_exist(ctrl, channel))
+			continue;
+
+		const union ddr_clk_controls_reg ddr_clk_controls = {
+			.dll_mask   = 1,
+			.vccddq_hi  = vddhi,
+			.lpddr_mode = ctrl->lpddr,
+		};
+		mchbar_write32(DDR_CLK_ch_CONTROLS(channel), ddr_clk_controls.raw);
+
+		const union ddr_cmd_controls_reg ddr_cmd_controls = {
+			.dll_mask         = 1,
+			.vccddq_hi        = vddhi,
+			.lpddr_mode       = ctrl->lpddr,
+			.early_weak_drive = 3,
+			.cmd_tx_eq        = 1,
+		};
+		mchbar_write32(DDR_CMD_ch_CONTROLS(channel), ddr_cmd_controls.raw);
+
+		const union ddr_cke_ctl_controls_reg ddr_cke_controls = {
+			.dll_mask         = 1,
+			.vccddq_hi        = vddhi,
+			.lpddr_mode       = ctrl->lpddr,
+			.early_weak_drive = 3,
+			.cmd_tx_eq        = 1,
+			.ctl_tx_eq        = 1,
+			.ctl_sr_drv       = 2,
+		};
+		mchbar_write32(DDR_CKE_ch_CTL_CONTROLS(channel), ddr_cke_controls.raw);
+
+		const union ddr_cke_ctl_controls_reg ddr_ctl_controls = {
+			.dll_mask       = 1,
+			.vccddq_hi      = vddhi,
+			.lpddr_mode     = ctrl->lpddr,
+			.ctl_tx_eq      = 1,
+			.ctl_sr_drv     = 2,
+			.la_drv_en_ovrd = 1,	/* Must be set on ULT */
+		};
+		mchbar_write32(DDR_CTL_ch_CTL_CONTROLS(channel), ddr_ctl_controls.raw);
+
+		const uint8_t cmd_pi = ctrl->lpddr ? 96 : 64;
+		mchbar_write32(DDR_CMD_ch_PI_CODING(channel), pi_code(cmd_pi));
+		mchbar_write32(DDR_CKE_ch_CMD_PI_CODING(channel), pi_code(cmd_pi));
+		mchbar_write32(DDR_CKE_CTL_ch_CTL_PI_CODING(channel), pi_code(64));
+		mchbar_write32(DDR_CLK_ch_PI_CODING(channel), pi_code(64));
+
+		mchbar_write32(DDR_CMD_ch_COMP_OFFSET(channel), 0);
+		mchbar_write32(DDR_CLK_ch_COMP_OFFSET(channel), 0);
+		mchbar_write32(DDR_CKE_CTL_ch_CTL_COMP_OFFSET(channel), 0);
+
+		for (uint8_t group = 0; group < NUM_GROUPS; group++) {
+			ctrl->cke_cmd_pi_code[channel][group] = cmd_pi;
+			ctrl->cmd_north_pi_code[channel][group] = cmd_pi;
+			ctrl->cmd_south_pi_code[channel][group] = cmd_pi;
+		}
+		for (uint8_t rank = 0; rank < NUM_SLOTRANKS; rank++) {
+			ctrl->clk_pi_code[channel][rank] = 64;
+			ctrl->ctl_pi_code[channel][rank] = 64;
+		}
+	}
+}
+
+enum {
+	RCOMP_RD_ODT = 0,
+	RCOMP_WR_DS_DQ,
+	RCOMP_WR_DS_CMD,
+	RCOMP_WR_DS_CTL,
+	RCOMP_WR_DS_CLK,
+	RCOMP_MAX_CODES,
+};
+
+struct rcomp_info {
+	uint8_t resistor;
+	uint8_t sz_steps;
+	uint8_t target_r;
+	int8_t result;
+};
+
+static void program_rcomp_vref(struct sysinfo *ctrl, const bool dis_odt_static)
+{
+	const bool is_ult = is_hsw_ult();
+	/*
+	 * +-------------------------------+
+	 * | Rcomp resistor values in ohms |
+	 * +-----------+------+------+-----+
+	 * | Ball name | Trad | ULTX | Use |
+	 * +-----------+------+------+-----+
+	 * | SM_RCOMP0 | 100  | 200  | CMD |
+	 * | SM_RCOMP1 |  75  | 120  | DQ  |
+	 * | SM_RCOMP2 | 100  | 100  | ODT |
+	 * +-----------+------+------+-----+
+	 */
+	struct rcomp_info rcomp_cfg[RCOMP_MAX_CODES] = {
+		[RCOMP_RD_ODT] = {
+			.resistor = 50,
+			.sz_steps = 96,
+			.target_r = 50,
+		},
+		[RCOMP_WR_DS_DQ] = {
+			.resistor = 25,
+			.sz_steps = 64,
+			.target_r = 33,
+		},
+		[RCOMP_WR_DS_CMD] = {
+			.resistor = 20,
+			.sz_steps = 64,
+			.target_r = 20,
+		},
+		[RCOMP_WR_DS_CTL] = {
+			.resistor = 20,
+			.sz_steps = 64,
+			.target_r = 20,
+		},
+		[RCOMP_WR_DS_CLK] = {
+			.resistor = 25,
+			.sz_steps = 64,
+			.target_r = 29,
+		},
+	};
+	if (is_ult) {
+		rcomp_cfg[RCOMP_WR_DS_DQ].resistor = 40;
+		rcomp_cfg[RCOMP_WR_DS_DQ].target_r = 40;
+		rcomp_cfg[RCOMP_WR_DS_CLK].resistor = 40;
+	} else if (ctrl->dpc[0] == 2 || ctrl->dpc[1] == 2) {
+		rcomp_cfg[RCOMP_RD_ODT].target_r = 60;
+	}
+	for (uint8_t i = 0; i < RCOMP_MAX_CODES; i++) {
+		struct rcomp_info *const r = &rcomp_cfg[i];
+		const int32_t div = 2 * (r->resistor + r->target_r);
+		assert(div);
+		const int32_t vref = (r->sz_steps * (r->resistor - r->target_r)) / div;
+
+		/* DqOdt is 5 bits wide, the other Rcomp targets are 4 bits wide */
+		const int8_t comp_limit = i == RCOMP_RD_ODT ? 16 : 8;
+		r->result = clamp_s32(-comp_limit, vref, comp_limit - 1);
+	}
+	const union ddr_comp_ctl_0_reg ddr_comp_ctl_0 = {
+		.disable_odt_static = dis_odt_static,
+		.dq_drv_vref        = rcomp_cfg[RCOMP_WR_DS_DQ].result,
+		.dq_odt_vref        = rcomp_cfg[RCOMP_RD_ODT].result,
+		.cmd_drv_vref       = rcomp_cfg[RCOMP_WR_DS_CMD].result,
+		.ctl_drv_vref       = rcomp_cfg[RCOMP_WR_DS_CTL].result,
+		.clk_drv_vref       = rcomp_cfg[RCOMP_WR_DS_CLK].result,
+	};
+	ctrl->comp_ctl_0 = ddr_comp_ctl_0;
+	mchbar_write32(DDR_COMP_CTL_0, ctrl->comp_ctl_0.raw);
+}
+
+enum {
+	SCOMP_DQ = 0,
+	SCOMP_CMD,
+	SCOMP_CTL,
+	SCOMP_CLK,
+	SCOMP_MAX_CODES,
+};
+
+static void program_slew_rates(struct sysinfo *ctrl, const bool vddhi)
+{
+	const uint8_t min_cycle_delay[SCOMP_MAX_CODES] = { 46, 70, 70, 46 };
+	uint8_t buffer_stage_delay_ps[SCOMP_MAX_CODES] = { 59, 53, 53, 53 };
+	uint16_t comp_slew_rate_codes[SCOMP_MAX_CODES];
+
+	/* CMD Slew Rate = 1.8 for 2N */
+	if (ctrl->tCMD == 2)
+		buffer_stage_delay_ps[SCOMP_CMD] = 89;
+
+	/* CMD Slew Rate = 4 V/ns for double-pumped CMD bus */
+	if (ctrl->lpddr)
+		buffer_stage_delay_ps[SCOMP_CMD] = 63;
+
+	for (uint8_t i = 0; i < SCOMP_MAX_CODES; i++) {
+		uint16_t stages = DIV_ROUND_CLOSEST(ctrl->qclkps, buffer_stage_delay_ps[i]);
+		if (stages < 5)
+			stages = 5;
+
+		bool dll_pc = buffer_stage_delay_ps[i] < min_cycle_delay[i] || stages > 16;
+
+		/* Lock DLL... */
+		if (dll_pc)
+			comp_slew_rate_codes[i] = stages / 2 - 1;        /* to a phase */
+		else
+			comp_slew_rate_codes[i] = (stages - 1) | BIT(4); /* to a cycle */
+	}
+	union ddr_comp_ctl_1_reg ddr_comp_ctl_1 = {
+		.dq_scomp       = comp_slew_rate_codes[SCOMP_DQ],
+		.cmd_scomp      = comp_slew_rate_codes[SCOMP_CMD],
+		.ctl_scomp      = comp_slew_rate_codes[SCOMP_CTL],
+		.clk_scomp      = comp_slew_rate_codes[SCOMP_CLK],
+		.vccddq_hi      = vddhi,
+	};
+	ctrl->comp_ctl_1 = ddr_comp_ctl_1;
+	mchbar_write32(DDR_COMP_CTL_1, ctrl->comp_ctl_1.raw);
+}
+
+static uint32_t ln_x100(const uint32_t input_x100)
+{
+	uint32_t val = input_x100;
+	uint32_t ret = 0;
+	while (val > 271) {
+		val = (val * 1000) / 2718;
+		ret += 100;
+	}
+	return ret + (-16 * val * val + 11578 * val - 978860) / 10000;
+}
+
+static uint32_t compute_vsshi_vref(struct sysinfo *ctrl, const uint32_t vsshi_tgt, bool up)
+{
+	const uint32_t delta = 15;
+	const uint32_t c_die_vsshi = 2000;
+	const uint32_t r_cmd_ref = 100 * 10;
+	const uint32_t offset = up ? 64 : 0;
+	const uint32_t ln_vsshi = ln_x100((100 * vsshi_tgt) / (vsshi_tgt - delta));
+	const uint32_t r_target = (ctrl->qclkps * 2000) / (c_die_vsshi * ln_vsshi);
+	const uint32_t r_dividend = 128 * (up ? r_cmd_ref : r_target);
+	return r_dividend / (r_cmd_ref + r_target) - offset;
+}
+
+static void program_vsshi(struct sysinfo *ctrl, const uint16_t vccio_mv, const uint16_t vsshi)
+{
+	const uint16_t vsshi_down = vsshi + 24; /* Panic threshold of 24 mV */
+	const uint16_t vsshi_up = vccio_mv - vsshi_down;
+	const union ddr_comp_vsshi_reg ddr_comp_vsshi = {
+		.panic_drv_down_vref = compute_vsshi_vref(ctrl, vsshi_down, false),
+		.panic_drv_up_vref   = compute_vsshi_vref(ctrl, vsshi_up, true),
+		.vt_offset           = 128 * 450 / vccio_mv / 2,
+		.vt_slope_a          = 4,
+	};
+	mchbar_write32(DDR_COMP_VSSHI, ddr_comp_vsshi.raw);
+}
+
+static void program_misc(struct sysinfo *ctrl)
+{
+	ctrl->misc_control_0.raw = mchbar_read32(DDR_SCRAM_MISC_CONTROL);
+	ctrl->misc_control_0.weaklock_latency = 12;
+	ctrl->misc_control_0.wl_sleep_cycles  =  5;
+	ctrl->misc_control_0.wl_wake_cycles   =  2;
+	mchbar_write32(DDR_SCRAM_MISC_CONTROL, ctrl->misc_control_0.raw);
+	for (uint8_t channel = 0; channel < NUM_CHANNELS; channel++) {
+		/* Keep scrambling disabled for training */
+		mchbar_write32(DDR_SCRAMBLE_ch(channel), 0);
+	}
+}
+
+/* Very weird, application-specific function */
+static void override_comp(uint32_t value, uint32_t width, uint32_t shift, uint32_t offset)
+{
+	const uint32_t mask = (1 << width) - 1;
+	uint32_t reg32 = mchbar_read32(offset);
+	reg32 &= ~(mask << shift);
+	reg32 |= (value << shift);
+	mchbar_write32(offset, reg32);
+}
+
+static void program_ls_comp(struct sysinfo *ctrl)
+{
+	/* Disable periodic COMP */
+	const union pcu_comp_reg m_comp = {
+		.comp_disable  = 1,
+		.comp_interval = COMP_INT,
+		.comp_force    = 1,
+	};
+	mchbar_write32(M_COMP, m_comp.raw);
+	udelay(10);
+
+	/* Override level shifter compensation */
+	const uint32_t ls_comp = 2;
+	override_comp(ls_comp, 3, 28, DDR_DATA_RCOMP_DATA_1);
+	override_comp(ls_comp, 3, 24, DDR_CMD_COMP);
+	override_comp(ls_comp, 3, 24, DDR_CKE_CTL_COMP);
+	override_comp(ls_comp, 3, 23, DDR_CLK_COMP);
+	override_comp(ls_comp, 3, 28, DDR_COMP_DATA_COMP_1);
+	override_comp(ls_comp, 3, 24, DDR_COMP_CMD_COMP);
+	override_comp(ls_comp, 4, 24, DDR_COMP_CTL_COMP);
+	override_comp(ls_comp, 4, 23, DDR_COMP_CLK_COMP);
+	override_comp(ls_comp, 3, 24, DDR_COMP_OVERRIDE);
+
+	/* Manually update the COMP values */
+	union ddr_scram_misc_control_reg ddr_scram_misc_ctrl = ctrl->misc_control_0;
+	ddr_scram_misc_ctrl.force_comp_update = 1;
+	mchbar_write32(DDR_SCRAM_MISC_CONTROL, ddr_scram_misc_ctrl.raw);
+
+	/* Use a fixed offset between ODT Up/Dn */
+	const union ddr_comp_data_comp_1_reg data_comp_1 = {
+		.raw = mchbar_read32(DDR_COMP_DATA_COMP_1),
+	};
+	const uint32_t odt_offset = data_comp_1.rcomp_odt_down - data_comp_1.rcomp_odt_up;
+	ctrl->comp_ctl_0.odt_up_down_off  = odt_offset;
+	ctrl->comp_ctl_0.fixed_odt_offset = 1;
+	mchbar_write32(DDR_COMP_CTL_0, ctrl->comp_ctl_0.raw);
+}
+
+/** TODO: Deduplicate PCODE stuff, it's already implemented in CPU code **/
+static bool pcode_ready(void)
+{
+	const unsigned int delay_step = 10;
+	for (unsigned int i = 0; i < 1000; i += delay_step) {
+		if (!(mchbar_read32(BIOS_MAILBOX_INTERFACE) & MAILBOX_RUN_BUSY))
+			return true;
+
+		udelay(delay_step);
+	};
+	return false;
+}
+
+static uint32_t pcode_mailbox_read(const uint32_t command)
+{
+	if (!pcode_ready()) {
+		printk(BIOS_ERR, "PCODE: mailbox timeout on wait ready\n");
+		return 0;
+	}
+	mchbar_write32(BIOS_MAILBOX_INTERFACE, command | MAILBOX_RUN_BUSY);
+	if (!pcode_ready()) {
+		printk(BIOS_ERR, "PCODE: mailbox timeout on completion\n");
+		return 0;
+	}
+	return mchbar_read32(BIOS_MAILBOX_DATA);
+}
+
+static int pcode_mailbox_write(const uint32_t command, const uint32_t data)
+{
+	if (!pcode_ready()) {
+		printk(BIOS_ERR, "PCODE: mailbox timeout on wait ready\n");
+		return -1;
+	}
+	mchbar_write32(BIOS_MAILBOX_DATA, data);
+	mchbar_write32(BIOS_MAILBOX_INTERFACE, command | MAILBOX_RUN_BUSY);
+	if (!pcode_ready()) {
+		printk(BIOS_ERR, "PCODE: mailbox timeout on completion\n");
+		return -1;
+	}
+	return 0;
+}
+
+static void enable_2x_refresh(struct sysinfo *ctrl)
+{
+	if (!CONFIG(ENABLE_DDR_2X_REFRESH))
+		return;
+
+	printk(BIOS_DEBUG, "Enabling 2x Refresh\n");
+	const bool asr = ctrl->flags.asr;
+	const bool lpddr = ctrl->lpddr;
+
+	/* Mutually exclusive */
+	assert(!asr || !lpddr);
+	if (!asr) {
+		uint32_t reg32 = pcode_mailbox_read(MAILBOX_BIOS_CMD_READ_DDR_2X_REFRESH);
+		if (!(reg32 & BIT(31))) {	/** TODO: What to do if this is locked? **/
+			reg32 |= BIT(0);	/* Enable 2x refresh */
+			reg32 |= BIT(31);	/* Lock */
+
+			if (lpddr)
+				reg32 |= 4 << 1;	/* LPDDR MR4 1/2 tREFI */
+
+			if (pcode_mailbox_write(MAILBOX_BIOS_CMD_WRITE_DDR_2X_REFRESH, reg32))
+				printk(BIOS_ERR, "Could not enable Mailbox 2x Refresh\n");
+		}
+		if (!lpddr)
+			return;
+	}
+	assert(asr || lpddr);
+	uint16_t refi_reduction = 50;
+	if (lpddr) {
+		refi_reduction = 97;
+		mchbar_clrbits32(PCU_DDR_PTM_CTL, 1 << 7); /* DISABLE_DRAM_TS */
+	}
+	/** TODO: Remember why this is only done on cold boots **/
+	if (ctrl->bootmode == BOOTMODE_COLD) {
+		ctrl->tREFI *= refi_reduction;
+		ctrl->tREFI /= 100;
+	}
+}
+
+static void set_pcu_ddr_voltage(const uint16_t vdd_mv)
+{
+	/** TODO: Handle other voltages? **/
+	uint32_t pcu_ddr_voltage;
+	switch (vdd_mv) {
+	case 1200:
+		pcu_ddr_voltage = 3;
+		break;
+	case 1350:
+		pcu_ddr_voltage = 1;
+		break;
+	default:
+	case 1500:
+		pcu_ddr_voltage = 0;
+		break;
+	}
+	/* Set bits 0..2 */
+	mchbar_write32(PCU_DDR_VOLTAGE, pcu_ddr_voltage);
+}
+
+static void program_scheduler(struct sysinfo *ctrl)
+{
+	/*
+	 * ZQ calibration needs to be serialized for LPDDR3. Otherwise,
+	 * the processor issues LPDDR3 ZQ calibration in parallel when
+	 * exiting Package C7 or deeper. This causes problems for dual
+	 * and quad die packages since all ranks share the same ZQ pin.
+	 *
+	 * Erratum HSM94: LPDDR3 ZQ Calibration Following Deep Package
+	 * C-state Exit May Lead to Unpredictable System Behavior
+	 */
+	const union mcscheds_cbit_reg mcscheds_cbit = {
+		.dis_write_gap = 1,
+		.dis_odt       = is_hsw_ult() && !(ctrl->lpddr && ctrl->lpddr_dram_odt),
+		.serialize_zq  = ctrl->lpddr,
+	};
+	mchbar_write32(MCSCHEDS_CBIT, mcscheds_cbit.raw);
+	mchbar_write32(MCMNTS_SC_WDBWM, 0x553c3038);
+	if (ctrl->lpddr) {
+		for (uint8_t channel = 0; channel < NUM_CHANNELS; channel++) {
+			if (!does_ch_exist(ctrl, channel))
+				continue;
+
+			union mcmain_command_rate_limit_reg cmd_rate_limit = {
+				.raw = mchbar_read32(COMMAND_RATE_LIMIT_ch(channel)),
+			};
+			cmd_rate_limit.enable_cmd_limit = 1;
+			cmd_rate_limit.cmd_rate_limit   = 3;
+			mchbar_write32(COMMAND_RATE_LIMIT_ch(channel), cmd_rate_limit.raw);
+		}
+	}
+}
+
+static uint8_t biggest_channel(const struct sysinfo *const ctrl)
+{
+	_Static_assert(NUM_CHANNELS == 2, "Code assumes exactly two channels");
+	return !!(ctrl->channel_size_mb[0] < ctrl->channel_size_mb[1]);
+}
+
+static void dram_zones(struct sysinfo *ctrl)
+{
+	/** TODO: Activate channel hash here, if enabled **/
+	const uint8_t biggest = biggest_channel(ctrl);
+	const uint8_t smaller = !biggest;
+
+	/** TODO: Use stacked mode if Memory Trace is enabled **/
+	const union mad_chnl_reg mad_channel = {
+		.ch_a       = biggest,
+		.ch_b       = smaller,
+		.ch_c       = 2,
+		.lpddr_mode = ctrl->lpddr,
+	};
+	mchbar_write32(MAD_CHNL, mad_channel.raw);
+
+	const uint8_t channel_b_zone_size = ctrl->channel_size_mb[smaller] / 256;
+	const union mad_zr_reg mad_zr = {
+		.ch_b_double = channel_b_zone_size * 2,
+		.ch_b_single = channel_b_zone_size,
+	};
+	mchbar_write32(MAD_ZR, mad_zr.raw);
+}
+
+static uint8_t biggest_dimm(const struct raminit_dimm_info *dimms)
+{
+	_Static_assert(NUM_SLOTS <= 2, "Code assumes at most two DIMMs per channel.");
+	if (NUM_SLOTS == 1)
+		return 0;
+
+	return !!(dimms[0].data.size_mb < dimms[1].data.size_mb);
+}
+
+static void dram_dimm_mapping(struct sysinfo *ctrl)
+{
+	for (uint8_t channel = 0; channel < NUM_CHANNELS; channel++) {
+		if (!does_ch_exist(ctrl, channel)) {
+			const union mad_dimm_reg mad_dimm = {
+				.rank_interleave = 1,
+				.enh_interleave  = 1,
+			};
+			mchbar_write32(MAD_DIMM(channel), mad_dimm.raw);
+			continue;
+		}
+		const uint8_t biggest = biggest_dimm(ctrl->dimms[channel]);
+		const uint8_t smaller = !biggest;
+		const struct dimm_attr_ddr3_st *dimm_a = &ctrl->dimms[channel][biggest].data;
+		const struct dimm_attr_ddr3_st *dimm_b = &ctrl->dimms[channel][smaller].data;
+		union mad_dimm_reg mad_dimm = {
+			.dimm_a_size     = dimm_a->size_mb / 256,
+			.dimm_b_size     = dimm_b->size_mb / 256,
+			.dimm_a_sel      = biggest,
+			.dimm_a_ranks    = dimm_a->ranks == 2,
+			.dimm_b_ranks    = dimm_b->ranks == 2,
+			.dimm_a_width    = dimm_a->width == 16,
+			.dimm_b_width    = dimm_b->width == 16,
+			.rank_interleave = 1,
+			.enh_interleave  = 1,
+			.ecc_mode        = 0,	/* Do not enable ECC yet */
+		};
+		if (is_hsw_ult())
+			mad_dimm.dimm_b_width = mad_dimm.dimm_a_width;
+
+		mchbar_write32(MAD_DIMM(channel), mad_dimm.raw);
+		if (ctrl->lpddr)
+			die("%s: Missing LPDDR support (LPDDR_MR_PARAMS)\n", __func__);
+	}
+}
+
+enum raminit_status configure_mc(struct sysinfo *ctrl)
+{
+	const uint16_t vccio_mv = 1000;
+	const uint16_t vsshi_mv = ctrl->vdd_mv - 950;
+	const bool dis_odt_static = is_hsw_ult(); /* Disable static ODT legs on ULT */
+	const bool vddhi = ctrl->vdd_mv > 1350;
+
+	program_misc_control(ctrl);
+	program_mrc_revision();
+	program_ranks_used(ctrl);
+	program_ddr_data(ctrl, dis_odt_static, vddhi);
+	program_vsshi_control(ctrl, vsshi_mv);
+	program_dimm_vref(ctrl, vccio_mv, vddhi);
+	program_ddr_ca(ctrl, vddhi);
+	program_rcomp_vref(ctrl, dis_odt_static);
+	program_slew_rates(ctrl, vddhi);
+	program_vsshi(ctrl, vccio_mv, vsshi_mv);
+	program_misc(ctrl);
+	program_ls_comp(ctrl);
+	enable_2x_refresh(ctrl);
+	set_pcu_ddr_voltage(ctrl->vdd_mv);
+	configure_timings(ctrl);
+	configure_refresh(ctrl);
+	program_scheduler(ctrl);
+	dram_zones(ctrl);
+	dram_dimm_mapping(ctrl);
+
+	return RAMINIT_STATUS_SUCCESS;
+}
diff --git a/src/northbridge/intel/haswell/native_raminit/raminit_main.c b/src/northbridge/intel/haswell/native_raminit/raminit_main.c
index 2fea658415..fcc981ad04 100644
--- a/src/northbridge/intel/haswell/native_raminit/raminit_main.c
+++ b/src/northbridge/intel/haswell/native_raminit/raminit_main.c
@@ -22,6 +22,7 @@ static const struct task_entry cold_boot[] = {
 	{ collect_spd_info,                                       true, "PROCSPD",    },
 	{ initialise_mpll,                                        true, "INITMPLL",   },
 	{ convert_timings,                                        true, "CONVTIM",    },
+	{ configure_mc,                                           true, "CONFMC",     },
 };
 
 /* Return a generic stepping value to make stepping checks simpler */
@@ -53,6 +54,7 @@ static void initialize_ctrl(struct sysinfo *ctrl)
 
 	ctrl->cpu = cpu_get_cpuid();
 	ctrl->stepping = get_stepping(ctrl->cpu);
+	ctrl->vdd_mv = is_hsw_ult() ? 1350 : 1500; /** FIXME: Hardcoded, does it matter? **/
 	ctrl->dq_pins_interleaved = cfg->dq_pins_interleaved;
 	ctrl->bootmode = bootmode;
 }
diff --git a/src/northbridge/intel/haswell/native_raminit/raminit_native.h b/src/northbridge/intel/haswell/native_raminit/raminit_native.h
index e0ebd3a2a7..fffa6d5450 100644
--- a/src/northbridge/intel/haswell/native_raminit/raminit_native.h
+++ b/src/northbridge/intel/haswell/native_raminit/raminit_native.h
@@ -3,16 +3,41 @@
 #ifndef HASWELL_RAMINIT_NATIVE_H
 #define HASWELL_RAMINIT_NATIVE_H
 
+#include <assert.h>
 #include <device/dram/ddr3.h>
 #include <northbridge/intel/haswell/haswell.h>
+#include <string.h>
+#include <types.h>
+
+#include "reg_structs.h"
 
 /** TODO (Angel): Remove this after in-review patches are submitted **/
 #define SPD_LEN SPD_SIZE_MAX_DDR3
 
+/* Each channel has 4 ranks, spread across 2 slots */
+#define NUM_SLOTRANKS		4
+
+#define NUM_GROUPS		2
+
 /* 8 data lanes + 1 ECC lane */
 #define NUM_LANES		9
 #define NUM_LANES_NO_ECC	8
 
+#define COMP_INT		10
+
+/* Always use 12 legs for emphasis (not trained) */
+#define TXEQFULLDRV		(3 << 4)
+
+enum command_training_iteration {
+	CT_ITERATION_CLOCK = 0,
+	CT_ITERATION_CMD_NORTH,
+	CT_ITERATION_CMD_SOUTH,
+	CT_ITERATION_CKE,
+	CT_ITERATION_CTL,
+	CT_ITERATION_CMD_VREF,
+	MAX_CT_ITERATION,
+};
+
 enum raminit_boot_mode {
 	BOOTMODE_COLD,
 	BOOTMODE_WARM,
@@ -58,6 +83,9 @@ struct sysinfo {
 	 * LPDDR-specific functions have stubs which will halt upon execution.
 	 */
 	bool lpddr;
+	bool lpddr_dram_odt;
+	uint8_t lpddr_cke_rank_map[NUM_CHANNELS];
+	uint8_t dq_byte_map[NUM_CHANNELS][MAX_CT_ITERATION][2];
 
 	struct raminit_dimm_info dimms[NUM_CHANNELS][NUM_SLOTS];
 	union dimm_flags_ddr3_st flags;
@@ -94,16 +122,89 @@ struct sysinfo {
 	uint32_t mem_clock_mhz;
 	uint32_t mem_clock_fs;		/* Memory clock period in femtoseconds */
 	uint32_t qclkps;		/* Quadrature clock period in picoseconds */
+
+	uint16_t vdd_mv;
+
+	union ddr_scram_misc_control_reg misc_control_0;
+
+	union ddr_comp_ctl_0_reg comp_ctl_0;
+	union ddr_comp_ctl_1_reg comp_ctl_1;
+
+	union ddr_data_vref_adjust_reg dimm_vref;
+
+	uint32_t data_offset_train[NUM_CHANNELS][NUM_LANES];
+	uint32_t data_offset_comp[NUM_CHANNELS][NUM_LANES];
+
+	uint32_t dq_control_0[NUM_CHANNELS];
+	uint32_t dq_control_1[NUM_CHANNELS][NUM_LANES];
+	uint32_t dq_control_2[NUM_CHANNELS][NUM_LANES];
+
+	uint16_t tx_dq[NUM_CHANNELS][NUM_SLOTRANKS][NUM_LANES];
+	uint16_t txdqs[NUM_CHANNELS][NUM_SLOTRANKS][NUM_LANES];
+	uint8_t  tx_eq[NUM_CHANNELS][NUM_SLOTRANKS][NUM_LANES];
+
+	uint16_t rcven[NUM_CHANNELS][NUM_SLOTRANKS][NUM_LANES];
+	uint8_t  rx_eq[NUM_CHANNELS][NUM_SLOTRANKS][NUM_LANES];
+	uint8_t rxdqsp[NUM_CHANNELS][NUM_SLOTRANKS][NUM_LANES];
+	uint8_t rxdqsn[NUM_CHANNELS][NUM_SLOTRANKS][NUM_LANES];
+	int8_t  rxvref[NUM_CHANNELS][NUM_SLOTRANKS][NUM_LANES];
+
+	uint8_t clk_pi_code[NUM_CHANNELS][NUM_SLOTRANKS];
+	uint8_t ctl_pi_code[NUM_CHANNELS][NUM_SLOTRANKS];
+	uint8_t cke_pi_code[NUM_CHANNELS][NUM_SLOTRANKS];
+
+	uint8_t cke_cmd_pi_code[NUM_CHANNELS][NUM_GROUPS];
+	uint8_t cmd_north_pi_code[NUM_CHANNELS][NUM_GROUPS];
+	uint8_t cmd_south_pi_code[NUM_CHANNELS][NUM_GROUPS];
 };
 
+static inline bool is_hsw_ult(void)
+{
+	return CONFIG(INTEL_LYNXPOINT_LP);
+}
+
+static inline bool rank_in_mask(uint8_t rank, uint8_t rankmask)
+{
+	assert(rank < NUM_SLOTRANKS);
+	return !!(BIT(rank) & rankmask);
+}
+
+static inline bool does_ch_exist(const struct sysinfo *ctrl, uint8_t channel)
+{
+	return !!ctrl->dpc[channel];
+}
+
+static inline bool does_rank_exist(const struct sysinfo *ctrl, uint8_t rank)
+{
+	return rank_in_mask(rank, ctrl->rankmap[0] | ctrl->rankmap[1]);
+}
+
+static inline bool rank_in_ch(const struct sysinfo *ctrl, uint8_t rank, uint8_t channel)
+{
+	assert(channel < NUM_CHANNELS);
+	return rank_in_mask(rank, ctrl->rankmap[channel]);
+}
+
+/** TODO: Handling of data_offset_train could be improved, also coupled with reg updates **/
+static inline void clear_data_offset_train_all(struct sysinfo *ctrl)
+{
+	memset(ctrl->data_offset_train, 0, sizeof(ctrl->data_offset_train));
+}
+
 void raminit_main(enum raminit_boot_mode bootmode);
 
 enum raminit_status collect_spd_info(struct sysinfo *ctrl);
 enum raminit_status initialise_mpll(struct sysinfo *ctrl);
 enum raminit_status convert_timings(struct sysinfo *ctrl);
+enum raminit_status configure_mc(struct sysinfo *ctrl);
+
+void configure_timings(struct sysinfo *ctrl);
+void configure_refresh(struct sysinfo *ctrl);
 
 enum raminit_status wait_for_first_rcomp(void);
 
+uint8_t get_rx_bias(const struct sysinfo *ctrl);
+
 uint8_t get_tCWL(uint32_t mem_clock_mhz);
 uint32_t get_tREFI(uint32_t mem_clock_mhz);
 uint32_t get_tXP(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
new file mode 100644
index 0000000000..d11cda4b3d
--- /dev/null
+++ b/src/northbridge/intel/haswell/native_raminit/reg_structs.h
@@ -0,0 +1,405 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#ifndef HASWELL_RAMINIT_REG_STRUCTS_H
+#define HASWELL_RAMINIT_REG_STRUCTS_H
+
+union ddr_data_rx_train_rank_reg {
+	struct __packed {
+		uint32_t rcven : 9; // Bits  8:0
+		uint32_t dqs_p : 6; // Bits 14:9
+		uint32_t rx_eq : 5; // Bits 19:15
+		uint32_t dqs_n : 6; // Bits 25:20
+		int32_t  vref  : 6; // Bits 31:26
+	};
+	uint32_t raw;
+};
+
+union ddr_data_tx_train_rank_reg {
+	struct __packed {
+		uint32_t dq_delay  : 9; // Bits  8:0
+		uint32_t dqs_delay : 9; // Bits 17:9
+		uint32_t           : 2; // Bits 19:18
+		uint32_t tx_eq     : 6; // Bits 25:20
+		uint32_t           : 6; // Bits 31:26
+	};
+	uint32_t raw;
+};
+
+union ddr_data_control_0_reg {
+	struct __packed {
+		uint32_t rx_training_mode      : 1; // Bits  0:0
+		uint32_t wl_training_mode      : 1; // Bits  1:1
+		uint32_t rl_training_mode      : 1; // Bits  2:2
+		uint32_t samp_train_mode       : 1; // Bits  3:3
+		uint32_t tx_on                 : 1; // Bits  4:4
+		uint32_t rf_on                 : 1; // Bits  5:5
+		uint32_t rx_pi_on              : 1; // Bits  6:6
+		uint32_t tx_pi_on              : 1; // Bits  7:7
+		uint32_t internal_clocks_on    : 1; // Bits  8:8
+		uint32_t repeater_clocks_on    : 1; // Bits  9:9
+		uint32_t tx_disable            : 1; // Bits 10:10
+		uint32_t rx_disable            : 1; // Bits 11:11
+		uint32_t tx_long               : 1; // Bits 12:12
+		uint32_t rx_dqs_ctle           : 2; // Bits 14:13
+		uint32_t rx_read_pointer       : 3; // Bits 17:15
+		uint32_t driver_segment_enable : 1; // Bits 18:18
+		uint32_t data_vccddq_hi        : 1; // Bits 19:19
+		uint32_t read_rf_rd            : 1; // Bits 20:20
+		uint32_t read_rf_wr            : 1; // Bits 21:21
+		uint32_t read_rf_rank          : 2; // Bits 23:22
+		uint32_t force_odt_on          : 1; // Bits 24:24
+		uint32_t odt_samp_off          : 1; // Bits 25:25
+		uint32_t disable_odt_static    : 1; // Bits 26:26
+		uint32_t ddr_cr_force_odt_on   : 1; // Bits 27:27
+		uint32_t lpddr_mode            : 1; // Bits 28:28
+		uint32_t en_read_preamble      : 1; // Bits 29:29
+		uint32_t odt_samp_extend_en    : 1; // Bits 30:30
+		uint32_t early_rleak_en        : 1; // Bits 31:31
+	};
+	uint32_t raw;
+};
+
+union ddr_data_control_1_reg {
+	struct __packed {
+		int32_t  ref_pi               : 4; // Bits 3:0
+		uint32_t dll_mask             : 2; // Bits 5:4
+		uint32_t dll_weaklock         : 1; // Bits 6:6
+		uint32_t sdll_segment_disable : 3; // Bits 9:7
+		uint32_t rx_bias_ctl          : 3; // Bits 12:10
+		int32_t  odt_delay            : 4; // Bits 16:13
+		uint32_t odt_duration         : 3; // Bits 19:17
+		int32_t  sense_amp_delay      : 4; // Bits 23:20
+		uint32_t sense_amp_duration   : 3; // Bits 26:24
+		uint32_t burst_end_odt_delay  : 3; // Bits 29:27   *** TODO: Check Broadwell ***
+		uint32_t lpddr_long_odt_en    : 1; // Bits 30:30
+		uint32_t                      : 1; // Bits 31:31
+	};
+	uint32_t raw;
+};
+
+/* NOTE: Bits 31:19 are only valid for Broadwell onwards */
+union ddr_data_control_2_reg {
+	struct __packed {
+		uint32_t rx_stagger_ctl    : 5; // Bits  4:0
+		uint32_t force_bias_on     : 1; // Bits  5:5
+		uint32_t force_rx_on       : 1; // Bits  6:6
+		uint32_t leaker_comp       : 2; // Bits  8:7
+		uint32_t rx_dqs_amp_offset : 4; // Bits 12:9
+		uint32_t rx_clk_stg_num    : 5; // Bits 17:13
+		uint32_t wl_long_delay     : 1; // Bits 18:18
+		uint32_t enable_vref_pwrdn : 1; // Bits 19:19
+		uint32_t ddr4_mode         : 1; // Bits 20:20
+		uint32_t en_vddq_odt       : 1; // Bits 21:21
+		uint32_t en_vtt_odt        : 1; // Bits 22:22
+		uint32_t en_const_z_eq_tx  : 1; // Bits 23:23
+		uint32_t tx_eq_dis         : 1; // Bits 24:24
+		uint32_t rx_vref_prog_mfc  : 1; // Bits 25:25
+		uint32_t cben              : 3; // Bits 28:26
+		uint32_t tx_deskew_disable : 1; // Bits 29:29
+		uint32_t rx_deskew_disable : 1; // Bits 30:30
+		uint32_t dq_slew_dly_byp   : 1; // Bits 31:31
+	};
+	uint32_t raw;
+};
+
+union ddr_comp_data_comp_1_reg {
+	struct __packed {
+		uint32_t rcomp_odt_up   : 6; // Bits  5:0
+		uint32_t                : 3; // Bits  8:6
+		uint32_t rcomp_odt_down : 6; // Bits 14:9
+		uint32_t                : 1; // Bits 15:15
+		uint32_t panic_drv_down : 6; // Bits 21:16
+		uint32_t panic_drv_up   : 6; // Bits 27:22
+		uint32_t ls_comp        : 3; // Bits 30:28
+		uint32_t                : 1; // Bits 31:31
+	};
+	uint32_t raw;
+};
+
+union ddr_comp_ctl_0_reg {
+	struct __packed {
+		uint32_t                    : 3; // Bits  2:0
+		uint32_t disable_odt_static : 1; // Bits  3:3
+		uint32_t odt_up_down_off    : 6; // Bits  9:4
+		uint32_t fixed_odt_offset   : 1; // Bits 10:10
+		int32_t  dq_drv_vref        : 4; // Bits 14:11
+		int32_t  dq_odt_vref        : 5; // Bits 19:15
+		int32_t  cmd_drv_vref       : 4; // Bits 23:20
+		int32_t  ctl_drv_vref       : 4; // Bits 27:24
+		int32_t  clk_drv_vref       : 4; // Bits 31:28
+	};
+	uint32_t raw;
+};
+
+union ddr_comp_ctl_1_reg {
+	struct __packed {
+		uint32_t dq_scomp       : 5; // Bits  4:0
+		uint32_t cmd_scomp      : 5; // Bits  9:5
+		uint32_t ctl_scomp      : 5; // Bits 14:10
+		uint32_t clk_scomp      : 5; // Bits 19:15
+		uint32_t tco_cmd_offset : 4; // Bits 23:20
+		uint32_t comp_clk_on    : 1; // Bits 24:24
+		uint32_t vccddq_hi      : 1; // Bits 25:25
+		uint32_t                : 3; // Bits 28:26
+		uint32_t dis_quick_comp : 1; // Bits 29:29
+		uint32_t sin_step       : 1; // Bits 30:30
+		uint32_t sin_step_adv   : 1; // Bits 31:31
+	};
+	uint32_t raw;
+};
+
+union ddr_data_vref_adjust_reg {
+	struct __packed {
+		int32_t  ca_vref_ctrl     : 7;// Bits  6:0
+		int32_t  ch1_vref_ctrl    : 7;// Bits 13:7
+		int32_t  ch0_vref_ctrl    : 7;// Bits 20:14
+		uint32_t en_dimm_vref_ca  : 1;// Bits 21:21
+		uint32_t en_dimm_vref_ch1 : 1;// Bits 22:22
+		uint32_t en_dimm_vref_ch0 : 1;// Bits 23:23
+		uint32_t hi_z_timer_ctrl  : 2;// Bits 25:24
+		uint32_t vccddq_hi_qnnn_h : 1;// Bits 26:26
+		uint32_t                  : 2;// Bits 28:27
+		uint32_t ca_slow_bw       : 1;// Bits 29:29
+		uint32_t ch0_slow_bw      : 1;// Bits 30:30
+		uint32_t ch1_slow_bw      : 1;// Bits 31:31
+	};
+	uint32_t raw;
+};
+
+union ddr_data_vref_control_reg {
+	struct __packed {
+		uint32_t hi_bw_divider   : 2; // Bits  1:0
+		uint32_t lo_bw_divider   : 2; // Bits  3:2
+		uint32_t sample_divider  : 3; // Bits  6:4
+		uint32_t open_loop       : 1; // Bits  7:7
+		uint32_t slow_bw_error   : 2; // Bits  9:8
+		uint32_t hi_bw_enable    : 1; // Bits 10:10
+		uint32_t                 : 1; // Bits 11:11
+		uint32_t vt_slope_b      : 3; // Bits 14:12
+		uint32_t vt_slope_a      : 3; // Bits 17:15
+		uint32_t vt_offset       : 3; // Bits 20:18
+		uint32_t sel_code        : 3; // Bits 23:21
+		uint32_t output_code     : 8; // Bits 31:24
+	};
+	uint32_t raw;
+};
+
+union ddr_comp_vsshi_reg {
+	struct __packed {
+		uint32_t panic_drv_down_vref : 6; // Bits  5:0
+		uint32_t panic_drv_up_vref   : 6; // Bits 11:6
+		uint32_t vt_offset           : 5; // Bits 16:12
+		uint32_t vt_slope_a          : 3; // Bits 19:17
+		uint32_t vt_slope_b          : 3; // Bits 22:20
+		uint32_t                     : 9; // Bits 31:23
+	};
+	uint32_t raw;
+};
+
+union ddr_comp_vsshi_control_reg {
+	struct __packed {
+		uint32_t vsshi_target    : 6; // Bits  5:0
+		uint32_t hi_bw_divider   : 2; // Bits  7:6
+		uint32_t lo_bw_divider   : 2; // Bits  9:8
+		uint32_t sample_divider  : 3; // Bits 12:10
+		uint32_t open_loop       : 1; // Bits 13:13
+		uint32_t bw_error        : 2; // Bits 15:14
+		uint32_t panic_driver_en : 1; // Bits 16:16
+		uint32_t                 : 1; // Bits 17:17
+		uint32_t panic_voltage   : 4; // Bits 21:18
+		uint32_t gain_boost      : 1; // Bits 22:22
+		uint32_t sel_code        : 1; // Bits 23:23
+		uint32_t output_code     : 8; // Bits 31:24
+	};
+	uint32_t raw;
+};
+
+union ddr_clk_controls_reg {
+	struct __packed {
+		uint32_t ref_pi             : 4; // Bits  3:0
+		uint32_t dll_mask           : 2; // Bits  5:4
+		uint32_t                    : 1; // Bits  6:6
+		uint32_t tx_on              : 1; // Bits  7:7
+		uint32_t internal_clocks_on : 1; // Bits  8:8
+		uint32_t repeater_clocks_on : 1; // Bits  9:9
+		uint32_t io_lb_ctl          : 2; // Bits 11:10
+		uint32_t odt_mode           : 1; // Bits 12:12
+		uint32_t                    : 8; // Bits 20:13
+		uint32_t rx_vref            : 6; // Bits 26:21
+		uint32_t vccddq_hi          : 1; // Bits 27:27
+		uint32_t dll_weaklock       : 1; // Bits 28:28
+		uint32_t lpddr_mode         : 1; // Bits 29:29
+		uint32_t                    : 2; // Bits 31:30
+	};
+	uint32_t raw;
+};
+
+union ddr_cmd_controls_reg {
+	struct __packed {
+		int32_t  ref_pi             : 4; // Bits  3:0
+		uint32_t dll_mask           : 2; // Bits  5:4
+		uint32_t                    : 1; // Bits  6:6
+		uint32_t tx_on              : 1; // Bits  7:7
+		uint32_t internal_clocks_on : 1; // Bits  8:8
+		uint32_t repeater_clocks_on : 1; // Bits  9:9
+		uint32_t io_lb_ctl          : 2; // Bits 11:10
+		uint32_t odt_mode           : 1; // Bits 12:12
+		uint32_t cmd_tx_eq          : 2; // Bits 14:13
+		uint32_t early_weak_drive   : 2; // Bits 16:15
+		uint32_t                    : 4; // Bits 20:17
+		int32_t  rx_vref            : 6; // Bits 26:21
+		uint32_t vccddq_hi          : 1; // Bits 27:27
+		uint32_t dll_weaklock       : 1; // Bits 28:28
+		uint32_t lpddr_mode         : 1; // Bits 29:29
+		uint32_t lpddr_ca_a_dis     : 1; // Bits 30:30
+		uint32_t lpddr_ca_b_dis     : 1; // Bits 31:31
+	};
+	uint32_t raw;
+};
+
+/* Same register definition for CKE and CTL fubs */
+union ddr_cke_ctl_controls_reg {
+	struct __packed {
+		int32_t  ref_pi             : 4; // Bits  3:0
+		uint32_t dll_mask           : 2; // Bits  5:4
+		uint32_t                    : 1; // Bits  6:6
+		uint32_t tx_on              : 1; // Bits  7:7
+		uint32_t internal_clocks_on : 1; // Bits  8:8
+		uint32_t repeater_clocks_on : 1; // Bits  9:9
+		uint32_t io_lb_ctl          : 2; // Bits 11:10
+		uint32_t odt_mode           : 1; // Bits 12:12
+		uint32_t cmd_tx_eq          : 2; // Bits 14:13
+		uint32_t early_weak_drive   : 2; // Bits 16:15
+		uint32_t ctl_tx_eq          : 2; // Bits 18:17
+		uint32_t ctl_sr_drv         : 2; // Bits 20:19
+		int32_t  rx_vref            : 6; // Bits 26:21
+		uint32_t vccddq_hi          : 1; // Bits 27:27
+		uint32_t dll_weaklock       : 1; // Bits 28:28
+		uint32_t lpddr_mode         : 1; // Bits 29:29
+		uint32_t la_drv_en_ovrd     : 1; // Bits 30:30
+		uint32_t lpddr_ca_a_dis     : 1; // Bits 31:31
+	};
+	uint32_t raw;
+};
+
+union ddr_scram_misc_control_reg {
+	struct __packed {
+		uint32_t wl_wake_cycles       :  2; // Bits  1:0
+		uint32_t wl_sleep_cycles      :  3; // Bits  4:2
+		uint32_t force_comp_update    :  1; // Bits  5:5
+		uint32_t weaklock_latency     :  4; // Bits  9:6
+		uint32_t ddr_no_ch_interleave :  1; // Bits 10:10
+		uint32_t lpddr_mode           :  1; // Bits 11:11
+		uint32_t cke_mapping_ch0      :  4; // Bits 15:12
+		uint32_t cke_mapping_ch1      :  4; // Bits 19:16
+		uint32_t                      : 12; // Bits 31:20
+	};
+	uint32_t raw;
+};
+
+union mcscheds_cbit_reg {
+	struct __packed {
+		uint32_t dis_opp_cas    : 1; // Bits  0:0
+		uint32_t dis_opp_is_cas : 1; // Bits  1:1
+		uint32_t dis_opp_ras    : 1; // Bits  2:2
+		uint32_t dis_opp_is_ras : 1; // Bits  3:3
+		uint32_t dis_1c_byp     : 1; // Bits  4:4
+		uint32_t dis_2c_byp     : 1; // Bits  5:5
+		uint32_t dis_deprd_opt  : 1; // Bits  6:6
+		uint32_t dis_pt_it      : 1; // Bits  7:7
+		uint32_t dis_prcnt_ring : 1; // Bits  8:8
+		uint32_t dis_prcnt_sa   : 1; // Bits  9:9
+		uint32_t dis_blkr_ph    : 1; // Bits 10:10
+		uint32_t dis_blkr_pe    : 1; // Bits 11:11
+		uint32_t dis_blkr_pm    : 1; // Bits 12:12
+		uint32_t dis_odt        : 1; // Bits 13:13
+		uint32_t oe_always_off  : 1; // Bits 14:14
+		uint32_t                : 1; // Bits 15:15
+		uint32_t dis_aom        : 1; // Bits 16:16
+		uint32_t block_rpq      : 1; // Bits 17:17
+		uint32_t block_wpq      : 1; // Bits 18:18
+		uint32_t invert_align   : 1; // Bits 19:19
+		uint32_t dis_write_gap  : 1; // Bits 20:20
+		uint32_t dis_zq         : 1; // Bits 21:21
+		uint32_t dis_tt         : 1; // Bits 22:22
+		uint32_t dis_opp_ref    : 1; // Bits 23:23
+		uint32_t long_zq        : 1; // Bits 24:24
+		uint32_t dis_srx_zq     : 1; // Bits 25:25
+		uint32_t serialize_zq   : 1; // Bits 26:26
+		uint32_t zq_fast_exec   : 1; // Bits 27:27
+		uint32_t dis_drive_nop  : 1; // Bits 28:28
+		uint32_t pres_wdb_ent   : 1; // Bits 29:29
+		uint32_t dis_clk_gate   : 1; // Bits 30:30
+		uint32_t                : 1; // Bits 31:31
+	};
+	uint32_t raw;
+};
+
+union mcmain_command_rate_limit_reg {
+	struct __packed {
+		uint32_t enable_cmd_limit :  1; // Bits  0:0
+		uint32_t cmd_rate_limit   :  3; // Bits  3:1
+		uint32_t reset_on_command :  4; // Bits  7:4
+		uint32_t reset_delay      :  4; // Bits 11:8
+		uint32_t ck_to_cke_delay  :  2; // Bits 13:12
+		uint32_t                  : 17; // Bits 30:14
+		uint32_t init_mrw_2n_cs   :  1; // Bits 31:31
+	};
+	uint32_t raw;
+};
+
+union mad_chnl_reg {
+	struct __packed {
+		uint32_t ch_a           :  2; // Bits  1:0
+		uint32_t ch_b           :  2; // Bits  3:2
+		uint32_t ch_c           :  2; // Bits  5:4
+		uint32_t stacked_mode   :  1; // Bits  6:6
+		uint32_t stkd_mode_bits :  3; // Bits  9:7
+		uint32_t lpddr_mode     :  1; // Bits 10:10
+		uint32_t                : 21; // Bits 31:11
+	};
+	uint32_t raw;
+};
+
+union mad_dimm_reg {
+	struct __packed {
+		uint32_t dimm_a_size     :  8;  // Bits  7:0
+		uint32_t dimm_b_size     :  8;  // Bits 15:8
+		uint32_t dimm_a_sel      :  1;  // Bits 16:16
+		uint32_t dimm_a_ranks    :  1;  // Bits 17:17
+		uint32_t dimm_b_ranks    :  1;  // Bits 18:18
+		uint32_t dimm_a_width    :  1;  // Bits 19:19
+		uint32_t dimm_b_width    :  1;  // Bits 20:20
+		uint32_t rank_interleave :  1;  // Bits 21:21
+		uint32_t enh_interleave  :  1;  // Bits 22:22
+		uint32_t                 :  1;  // Bits 23:23
+		uint32_t ecc_mode        :  2;  // Bits 25:24
+		uint32_t hori_mode       :  1;  // Bits 26:26
+		uint32_t hori_address    :  3;  // Bits 29:27
+		uint32_t                 :  2;  // Bits 31:30
+	};
+	uint32_t raw;
+};
+
+union mad_zr_reg {
+	struct __packed {
+		uint32_t             : 16; // Bits 15:0
+		uint32_t ch_b_double :  8; // Bits 23:16
+		uint32_t ch_b_single :  8; // Bits 31:24
+	};
+	uint32_t raw;
+};
+
+/* Same definition for P_COMP, M_COMP, D_COMP */
+union pcu_comp_reg {
+	struct __packed {
+		uint32_t comp_disable  :  1; // Bits  0:0
+		uint32_t comp_interval :  4; // Bits  4:1
+		uint32_t               :  3; // Bits  7:5
+		uint32_t comp_force    :  1; // Bits  8:8
+		uint32_t               : 23; // Bits 31:9
+	};
+	uint32_t raw;
+};
+
+#endif
diff --git a/src/northbridge/intel/haswell/native_raminit/timings_refresh.c b/src/northbridge/intel/haswell/native_raminit/timings_refresh.c
new file mode 100644
index 0000000000..a9d960f31b
--- /dev/null
+++ b/src/northbridge/intel/haswell/native_raminit/timings_refresh.c
@@ -0,0 +1,13 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#include "raminit_native.h"
+
+void configure_timings(struct sysinfo *ctrl)
+{
+	/** TODO: Stub **/
+}
+
+void configure_refresh(struct sysinfo *ctrl)
+{
+	/** TODO: Stub **/
+}
diff --git a/src/northbridge/intel/haswell/registers/mchbar.h b/src/northbridge/intel/haswell/registers/mchbar.h
index 45f8174995..4c3f399b5d 100644
--- a/src/northbridge/intel/haswell/registers/mchbar.h
+++ b/src/northbridge/intel/haswell/registers/mchbar.h
@@ -7,9 +7,98 @@
 #define NUM_CHANNELS	2
 #define NUM_SLOTS	2
 
+/* Indexed register helper macros */
+#define _DDRIO_C_R_B(r, ch, rank, byte)	((r) + 0x100 * (ch) + 0x4 * (rank) + 0x200 * (byte))
+#define _MCMAIN_C_X(r, ch, x)		((r) + 0x400 * (ch) + 0x4 * (x))
+#define _MCMAIN_C(r, ch)		((r) + 0x400 * (ch))
+
 /* Register definitions */
+
+/* DDR DATA per-channel per-bytelane */
+#define DQ_CONTROL_2(ch, byte)			_DDRIO_C_R_B(0x0064, ch, 0, byte)
+
+/* DDR CKE per-channel */
+#define DDR_CKE_ch_CMD_COMP_OFFSET(ch)		_DDRIO_C_R_B(0x1204, ch, 0, 0)
+#define DDR_CKE_ch_CMD_PI_CODING(ch)		_DDRIO_C_R_B(0x1208, ch, 0, 0)
+
+#define DDR_CKE_ch_CTL_CONTROLS(ch)		_DDRIO_C_R_B(0x121c, ch, 0, 0)
+#define DDR_CKE_ch_CTL_RANKS_USED(ch)		_DDRIO_C_R_B(0x1220, ch, 0, 0)
+
+/* DDR CTL per-channel */
+#define DDR_CTL_ch_CTL_CONTROLS(ch)		_DDRIO_C_R_B(0x1c1c, ch, 0, 0)
+#define DDR_CTL_ch_CTL_RANKS_USED(ch)		_DDRIO_C_R_B(0x1c20, ch, 0, 0)
+
+/* DDR CLK per-channel */
+#define DDR_CLK_ch_RANKS_USED(ch)		_DDRIO_C_R_B(0x1800, ch, 0, 0)
+#define DDR_CLK_ch_COMP_OFFSET(ch)		_DDRIO_C_R_B(0x1808, ch, 0, 0)
+#define DDR_CLK_ch_PI_CODING(ch)		_DDRIO_C_R_B(0x180c, ch, 0, 0)
+#define DDR_CLK_ch_CONTROLS(ch)			_DDRIO_C_R_B(0x1810, ch, 0, 0)
+
+/* DDR Scrambler */
+#define DDR_SCRAMBLE_ch(ch)			(0x2000 + 4 * (ch))
+#define DDR_SCRAM_MISC_CONTROL			0x2008
+
+/* 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)
+#define DDR_CMD_ch_CONTROLS(ch)			_DDRIO_C_R_B(0x320c, ch, 0, 0)
+
+/* DDR CKE/CTL per-channel (writes go to both CKE and CTL fubs) */
+#define DDR_CKE_CTL_ch_CTL_COMP_OFFSET(ch)	_DDRIO_C_R_B(0x3414, ch, 0, 0)
+#define DDR_CKE_CTL_ch_CTL_PI_CODING(ch)	_DDRIO_C_R_B(0x3418, ch, 0, 0)
+
+/* DDR DATA broadcast */
+#define DDR_DATA_RX_TRAIN_RANK(rank)		_DDRIO_C_R_B(0x3600, 0, rank, 0)
+#define DDR_DATA_RX_PER_BIT_RANK(rank)		_DDRIO_C_R_B(0x3610, 0, rank, 0)
+#define DDR_DATA_TX_TRAIN_RANK(rank)		_DDRIO_C_R_B(0x3620, 0, rank, 0)
+#define DDR_DATA_TX_PER_BIT_RANK(rank)		_DDRIO_C_R_B(0x3630, 0, rank, 0)
+
+#define DDR_DATA_RCOMP_DATA_1			0x3644
+#define DDR_DATA_TX_XTALK			0x3648
+#define DDR_DATA_RX_OFFSET_VDQ			0x364c
+#define DDR_DATA_OFFSET_COMP			0x365c
+#define DDR_DATA_CONTROL_1			0x3660
+
+#define DDR_DATA_OFFSET_TRAIN			0x3670
+#define DDR_DATA_CONTROL_0			0x3674
+#define DDR_DATA_VREF_ADJUST			0x3678
+
+/* DDR CMD broadcast */
+#define DDR_CMD_COMP				0x3700
+
+/* DDR CKE/CTL broadcast */
+#define DDR_CKE_CTL_COMP			0x3810
+
+/* DDR CLK broadcast */
+#define DDR_CLK_COMP				0x3904
+#define DDR_CLK_CONTROLS			0x3910
+#define DDR_CLK_CB_STATUS			0x3918
+
+/* DDR COMP (global) */
+#define DDR_COMP_DATA_COMP_1			0x3a04
+#define DDR_COMP_CMD_COMP			0x3a08
+#define DDR_COMP_CTL_COMP			0x3a0c
+#define DDR_COMP_CLK_COMP			0x3a10
+#define DDR_COMP_CTL_0				0x3a14
+#define DDR_COMP_CTL_1				0x3a18
+#define DDR_COMP_VSSHI				0x3a1c
+#define DDR_COMP_OVERRIDE			0x3a20
+#define DDR_COMP_VSSHI_CONTROL			0x3a24
+
+/* MCMAIN per-channel */
+#define COMMAND_RATE_LIMIT_ch(ch)		_MCMAIN_C(0x4010, ch)
+
+#define MC_INIT_STATE_ch(ch)			_MCMAIN_C(0x42a0, ch)
+
+/* MCMAIN broadcast */
+#define MCSCHEDS_CBIT		0x4c20
+
+#define MCMNTS_SC_WDBWM		0x4f8c
+
+/* MCDECS */
 #define MAD_CHNL		0x5000 /* Address Decoder Channel Configuration */
 #define MAD_DIMM(ch)		(0x5004 + (ch) * 4)
+#define MAD_ZR			0x5014
 #define MC_INIT_STATE_G		0x5030
 #define MRC_REVISION		0x5034 /* MRC Revision */
 
@@ -28,6 +117,8 @@
 
 #define PCU_DDR_PTM_CTL		0x5880
 
+#define PCU_DDR_VOLTAGE		0x58a4
+
 /* Some power MSRs are also represented in MCHBAR */
 #define MCH_PKG_POWER_LIMIT_LO	0x59a0
 #define MCH_PKG_POWER_LIMIT_HI	0x59a4
@@ -48,6 +139,8 @@
 #define  MAILBOX_BIOS_CMD_FSM_MEASURE_INTVL	0x909
 #define  MAILBOX_BIOS_CMD_READ_PCH_POWER	0xa
 #define  MAILBOX_BIOS_CMD_READ_PCH_POWER_EXT	0xb
+#define  MAILBOX_BIOS_CMD_READ_DDR_2X_REFRESH	0x17
+#define  MAILBOX_BIOS_CMD_WRITE_DDR_2X_REFRESH	0x18
 #define  MAILBOX_BIOS_CMD_READ_C9C10_VOLTAGE	0x26
 #define  MAILBOX_BIOS_CMD_WRITE_C9C10_VOLTAGE	0x27
 
@@ -66,6 +159,7 @@
 #define MC_BIOS_REQ		0x5e00 /* Memory frequency request register */
 #define MC_BIOS_DATA		0x5e04 /* Miscellaneous information for BIOS */
 #define SAPMCTL			0x5f00
+#define M_COMP			0x5f08
 
 #define HDAUDRID		0x6008
 #define UMAGFXCTL		0x6020
-- 
2.39.2