x86: quark: Add utility codes needed for MRC

Add various utility codes needed for Quark MRC.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: Simon Glass <sjg@chromium.org>

1 files changed, 1475 insertions, 0 deletions

diff --git a/arch/x86/cpu/quark/mrc_util.c b/arch/x86/cpu/quark/mrc_util.c
new file mode 100644
index 0000000000..3a79ae551b
--- /dev/null
+++ b/arch/x86/cpu/quark/mrc_util.c
@@ -0,0 +1,1475 @@
+/*
+ * Copyright (C) 2013, Intel Corporation
+ * Copyright (C) 2015, Bin Meng <bmeng.cn@gmail.com>
+ *
+ * Ported from Intel released Quark UEFI BIOS
+ * QuarkSocPkg/QuarkNorthCluster/MemoryInit/Pei
+ *
+ * SPDX-License-Identifier:	Intel
+ */
+
+#include <common.h>
+#include <asm/arch/device.h>
+#include <asm/arch/mrc.h>
+#include <asm/arch/msg_port.h>
+#include "mrc_util.h"
+#include "hte.h"
+#include "smc.h"
+
+static const uint8_t vref_codes[64] = {
+	/* lowest to highest */
+	0x3F, 0x3E, 0x3D, 0x3C, 0x3B, 0x3A, 0x39, 0x38,
+	0x37, 0x36, 0x35, 0x34, 0x33, 0x32, 0x31, 0x30,
+	0x2F, 0x2E, 0x2D, 0x2C, 0x2B, 0x2A, 0x29, 0x28,
+	0x27, 0x26, 0x25, 0x24, 0x23, 0x22, 0x21, 0x20,
+	0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
+	0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F,
+	0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
+	0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F
+};
+
+void mrc_write_mask(u32 unit, u32 addr, u32 data, u32 mask)
+{
+	msg_port_write(unit, addr,
+		       (msg_port_read(unit, addr) & ~(mask)) |
+		       ((data) & (mask)));
+}
+
+void mrc_alt_write_mask(u32 unit, u32 addr, u32 data, u32 mask)
+{
+	msg_port_alt_write(unit, addr,
+			   (msg_port_alt_read(unit, addr) & ~(mask)) |
+			   ((data) & (mask)));
+}
+
+void mrc_post_code(uint8_t major, uint8_t minor)
+{
+	/* send message to UART */
+	DPF(D_INFO, "POST: 0x%01x%02x\n", major, minor);
+
+	/* error check */
+	if (major == 0xee)
+		hang();
+}
+
+/* Delay number of nanoseconds */
+void delay_n(uint32_t ns)
+{
+	/* 1000 MHz clock has 1ns period --> no conversion required */
+	uint64_t final_tsc = rdtsc();
+
+	final_tsc += ((get_tbclk_mhz() * ns) / 1000);
+
+	while (rdtsc() < final_tsc)
+		;
+}
+
+/* Delay number of microseconds */
+void delay_u(uint32_t ms)
+{
+	/* 64-bit math is not an option, just use loops */
+	while (ms--)
+		delay_n(1000);
+}
+
+/* Select Memory Manager as the source for PRI interface */
+void select_mem_mgr(void)
+{
+	u32 dco;
+
+	ENTERFN();
+
+	dco = msg_port_read(MEM_CTLR, DCO);
+	dco &= ~BIT28;
+	msg_port_write(MEM_CTLR, DCO, dco);
+
+	LEAVEFN();
+}
+
+/* Select HTE as the source for PRI interface */
+void select_hte(void)
+{
+	u32 dco;
+
+	ENTERFN();
+
+	dco = msg_port_read(MEM_CTLR, DCO);
+	dco |= BIT28;
+	msg_port_write(MEM_CTLR, DCO, dco);
+
+	LEAVEFN();
+}
+
+/*
+ * Send DRAM command
+ * data should be formated using DCMD_Xxxx macro or emrsXCommand structure
+ */
+void dram_init_command(uint32_t data)
+{
+	pci_write_config_dword(QUARK_HOST_BRIDGE, MSG_DATA_REG, data);
+	pci_write_config_dword(QUARK_HOST_BRIDGE, MSG_CTRL_EXT_REG, 0);
+	msg_port_setup(MSG_OP_DRAM_INIT, MEM_CTLR, 0);
+
+	DPF(D_REGWR, "WR32 %03X %08X %08X\n", MEM_CTLR, 0, data);
+}
+
+/* Send DRAM wake command using special MCU side-band WAKE opcode */
+void dram_wake_command(void)
+{
+	ENTERFN();
+
+	msg_port_setup(MSG_OP_DRAM_WAKE, MEM_CTLR, 0);
+
+	LEAVEFN();
+}
+
+void training_message(uint8_t channel, uint8_t rank, uint8_t byte_lane)
+{
+	/* send message to UART */
+	DPF(D_INFO, "CH%01X RK%01X BL%01X\n", channel, rank, byte_lane);
+}
+
+/*
+ * This function will program the RCVEN delays
+ *
+ * (currently doesn't comprehend rank)
+ */
+void set_rcvn(uint8_t channel, uint8_t rank,
+	      uint8_t byte_lane, uint32_t pi_count)
+{
+	uint32_t reg;
+	uint32_t msk;
+	uint32_t temp;
+
+	ENTERFN();
+
+	DPF(D_TRN, "Rcvn ch%d rnk%d ln%d : pi=%03X\n",
+	    channel, rank, byte_lane, pi_count);
+
+	/*
+	 * RDPTR (1/2 MCLK, 64 PIs)
+	 * BL0 -> B01PTRCTL0[11:08] (0x0-0xF)
+	 * BL1 -> B01PTRCTL0[23:20] (0x0-0xF)
+	 */
+	reg = B01PTRCTL0 + ((byte_lane >> 1) * DDRIODQ_BL_OFFSET) +
+		(channel * DDRIODQ_CH_OFFSET);
+	msk = (byte_lane & BIT0) ? (BIT23 | BIT22 | BIT21 | BIT20) :
+		(BIT11 | BIT10 | BIT9 | BIT8);
+	temp = (byte_lane & BIT0) ? ((pi_count / HALF_CLK) << 20) :
+		((pi_count / HALF_CLK) << 8);
+	mrc_alt_write_mask(DDRPHY, reg, temp, msk);
+
+	/* Adjust PI_COUNT */
+	pi_count -= ((pi_count / HALF_CLK) & 0xF) * HALF_CLK;
+
+	/*
+	 * PI (1/64 MCLK, 1 PIs)
+	 * BL0 -> B0DLLPICODER0[29:24] (0x00-0x3F)
+	 * BL1 -> B1DLLPICODER0[29:24] (0x00-0x3F)
+	 */
+	reg = (byte_lane & BIT0) ? B1DLLPICODER0 : B0DLLPICODER0;
+	reg += (((byte_lane >> 1) * DDRIODQ_BL_OFFSET) +
+		(channel * DDRIODQ_CH_OFFSET));
+	msk = (BIT29 | BIT28 | BIT27 | BIT26 | BIT25 | BIT24);
+	temp = pi_count << 24;
+	mrc_alt_write_mask(DDRPHY, reg, temp, msk);
+
+	/*
+	 * DEADBAND
+	 * BL0/1 -> B01DBCTL1[08/11] (+1 select)
+	 * BL0/1 -> B01DBCTL1[02/05] (enable)
+	 */
+	reg = B01DBCTL1 + ((byte_lane >> 1) * DDRIODQ_BL_OFFSET) +
+		(channel * DDRIODQ_CH_OFFSET);
+	msk = 0x00;
+	temp = 0x00;
+
+	/* enable */
+	msk |= (byte_lane & BIT0) ? BIT5 : BIT2;
+	if ((pi_count < EARLY_DB) || (pi_count > LATE_DB))
+		temp |= msk;
+
+	/* select */
+	msk |= (byte_lane & BIT0) ? BIT11 : BIT8;
+	if (pi_count < EARLY_DB)
+		temp |= msk;
+
+	mrc_alt_write_mask(DDRPHY, reg, temp, msk);
+
+	/* error check */
+	if (pi_count > 0x3F) {
+		training_message(channel, rank, byte_lane);
+		mrc_post_code(0xee, 0xe0);
+	}
+
+	LEAVEFN();
+}
+
+/*
+ * This function will return the current RCVEN delay on the given
+ * channel, rank, byte_lane as an absolute PI count.
+ *
+ * (currently doesn't comprehend rank)
+ */
+uint32_t get_rcvn(uint8_t channel, uint8_t rank, uint8_t byte_lane)
+{
+	uint32_t reg;
+	uint32_t temp;
+	uint32_t pi_count;
+
+	ENTERFN();
+
+	/*
+	 * RDPTR (1/2 MCLK, 64 PIs)
+	 * BL0 -> B01PTRCTL0[11:08] (0x0-0xF)
+	 * BL1 -> B01PTRCTL0[23:20] (0x0-0xF)
+	 */
+	reg = B01PTRCTL0 + ((byte_lane >> 1) * DDRIODQ_BL_OFFSET) +
+		(channel * DDRIODQ_CH_OFFSET);
+	temp = msg_port_alt_read(DDRPHY, reg);
+	temp >>= (byte_lane & BIT0) ? 20 : 8;
+	temp &= 0xF;
+
+	/* Adjust PI_COUNT */
+	pi_count = temp * HALF_CLK;
+
+	/*
+	 * PI (1/64 MCLK, 1 PIs)
+	 * BL0 -> B0DLLPICODER0[29:24] (0x00-0x3F)
+	 * BL1 -> B1DLLPICODER0[29:24] (0x00-0x3F)
+	 */
+	reg = (byte_lane & BIT0) ? B1DLLPICODER0 : B0DLLPICODER0;
+	reg += (((byte_lane >> 1) * DDRIODQ_BL_OFFSET) +
+		(channel * DDRIODQ_CH_OFFSET));
+	temp = msg_port_alt_read(DDRPHY, reg);
+	temp >>= 24;
+	temp &= 0x3F;
+
+	/* Adjust PI_COUNT */
+	pi_count += temp;
+
+	LEAVEFN();
+
+	return pi_count;
+}
+
+/*
+ * This function will program the RDQS delays based on an absolute
+ * amount of PIs.
+ *
+ * (currently doesn't comprehend rank)
+ */
+void set_rdqs(uint8_t channel, uint8_t rank,
+	      uint8_t byte_lane, uint32_t pi_count)
+{
+	uint32_t reg;
+	uint32_t msk;
+	uint32_t temp;
+
+	ENTERFN();
+	DPF(D_TRN, "Rdqs ch%d rnk%d ln%d : pi=%03X\n",
+	    channel, rank, byte_lane, pi_count);
+
+	/*
+	 * PI (1/128 MCLK)
+	 * BL0 -> B0RXDQSPICODE[06:00] (0x00-0x47)
+	 * BL1 -> B1RXDQSPICODE[06:00] (0x00-0x47)
+	 */
+	reg = (byte_lane & BIT0) ? B1RXDQSPICODE : B0RXDQSPICODE;
+	reg += (((byte_lane >> 1) * DDRIODQ_BL_OFFSET) +
+		(channel * DDRIODQ_CH_OFFSET));
+	msk = (BIT6 | BIT5 | BIT4 | BIT3 | BIT2 | BIT1 | BIT0);
+	temp = pi_count << 0;
+	mrc_alt_write_mask(DDRPHY, reg, temp, msk);
+
+	/* error check (shouldn't go above 0x3F) */
+	if (pi_count > 0x47) {
+		training_message(channel, rank, byte_lane);
+		mrc_post_code(0xee, 0xe1);
+	}
+
+	LEAVEFN();
+}
+
+/*
+ * This function will return the current RDQS delay on the given
+ * channel, rank, byte_lane as an absolute PI count.
+ *
+ * (currently doesn't comprehend rank)
+ */
+uint32_t get_rdqs(uint8_t channel, uint8_t rank, uint8_t byte_lane)
+{
+	uint32_t reg;
+	uint32_t temp;
+	uint32_t pi_count;
+
+	ENTERFN();
+
+	/*
+	 * PI (1/128 MCLK)
+	 * BL0 -> B0RXDQSPICODE[06:00] (0x00-0x47)
+	 * BL1 -> B1RXDQSPICODE[06:00] (0x00-0x47)
+	 */
+	reg = (byte_lane & BIT0) ? B1RXDQSPICODE : B0RXDQSPICODE;
+	reg += (((byte_lane >> 1) * DDRIODQ_BL_OFFSET) +
+		(channel * DDRIODQ_CH_OFFSET));
+	temp = msg_port_alt_read(DDRPHY, reg);
+
+	/* Adjust PI_COUNT */
+	pi_count = temp & 0x7F;
+
+	LEAVEFN();
+
+	return pi_count;
+}
+
+/*
+ * This function will program the WDQS delays based on an absolute
+ * amount of PIs.
+ *
+ * (currently doesn't comprehend rank)
+ */
+void set_wdqs(uint8_t channel, uint8_t rank,
+	      uint8_t byte_lane, uint32_t pi_count)
+{
+	uint32_t reg;
+	uint32_t msk;
+	uint32_t temp;
+
+	ENTERFN();
+
+	DPF(D_TRN, "Wdqs ch%d rnk%d ln%d : pi=%03X\n",
+	    channel, rank, byte_lane, pi_count);
+
+	/*
+	 * RDPTR (1/2 MCLK, 64 PIs)
+	 * BL0 -> B01PTRCTL0[07:04] (0x0-0xF)
+	 * BL1 -> B01PTRCTL0[19:16] (0x0-0xF)
+	 */
+	reg = B01PTRCTL0 + ((byte_lane >> 1) * DDRIODQ_BL_OFFSET) +
+		(channel * DDRIODQ_CH_OFFSET);
+	msk = (byte_lane & BIT0) ? (BIT19 | BIT18 | BIT17 | BIT16) :
+		(BIT7 | BIT6 | BIT5 | BIT4);
+	temp = pi_count / HALF_CLK;
+	temp <<= (byte_lane & BIT0) ? 16 : 4;
+	mrc_alt_write_mask(DDRPHY, reg, temp, msk);
+
+	/* Adjust PI_COUNT */
+	pi_count -= ((pi_count / HALF_CLK) & 0xF) * HALF_CLK;
+
+	/*
+	 * PI (1/64 MCLK, 1 PIs)
+	 * BL0 -> B0DLLPICODER0[21:16] (0x00-0x3F)
+	 * BL1 -> B1DLLPICODER0[21:16] (0x00-0x3F)
+	 */
+	reg = (byte_lane & BIT0) ? B1DLLPICODER0 : B0DLLPICODER0;
+	reg += (((byte_lane >> 1) * DDRIODQ_BL_OFFSET) +
+		(channel * DDRIODQ_CH_OFFSET));
+	msk = (BIT21 | BIT20 | BIT19 | BIT18 | BIT17 | BIT16);
+	temp = pi_count << 16;
+	mrc_alt_write_mask(DDRPHY, reg, temp, msk);
+
+	/*
+	 * DEADBAND
+	 * BL0/1 -> B01DBCTL1[07/10] (+1 select)
+	 * BL0/1 -> B01DBCTL1[01/04] (enable)
+	 */
+	reg = B01DBCTL1 + ((byte_lane >> 1) * DDRIODQ_BL_OFFSET) +
+		(channel * DDRIODQ_CH_OFFSET);
+	msk = 0x00;
+	temp = 0x00;
+
+	/* enable */
+	msk |= (byte_lane & BIT0) ? BIT4 : BIT1;
+	if ((pi_count < EARLY_DB) || (pi_count > LATE_DB))
+		temp |= msk;
+
+	/* select */
+	msk |= (byte_lane & BIT0) ? BIT10 : BIT7;
+	if (pi_count < EARLY_DB)
+		temp |= msk;
+
+	mrc_alt_write_mask(DDRPHY, reg, temp, msk);
+
+	/* error check */
+	if (pi_count > 0x3F) {
+		training_message(channel, rank, byte_lane);
+		mrc_post_code(0xee, 0xe2);
+	}
+
+	LEAVEFN();
+}
+
+/*
+ * This function will return the amount of WDQS delay on the given
+ * channel, rank, byte_lane as an absolute PI count.
+ *
+ * (currently doesn't comprehend rank)
+ */
+uint32_t get_wdqs(uint8_t channel, uint8_t rank, uint8_t byte_lane)
+{
+	uint32_t reg;
+	uint32_t temp;
+	uint32_t pi_count;
+
+	ENTERFN();
+
+	/*
+	 * RDPTR (1/2 MCLK, 64 PIs)
+	 * BL0 -> B01PTRCTL0[07:04] (0x0-0xF)
+	 * BL1 -> B01PTRCTL0[19:16] (0x0-0xF)
+	 */
+	reg = B01PTRCTL0 + ((byte_lane >> 1) * DDRIODQ_BL_OFFSET) +
+		(channel * DDRIODQ_CH_OFFSET);
+	temp = msg_port_alt_read(DDRPHY, reg);
+	temp >>= (byte_lane & BIT0) ? 16 : 4;
+	temp &= 0xF;
+
+	/* Adjust PI_COUNT */
+	pi_count = (temp * HALF_CLK);
+
+	/*
+	 * PI (1/64 MCLK, 1 PIs)
+	 * BL0 -> B0DLLPICODER0[21:16] (0x00-0x3F)
+	 * BL1 -> B1DLLPICODER0[21:16] (0x00-0x3F)
+	 */
+	reg = (byte_lane & BIT0) ? B1DLLPICODER0 : B0DLLPICODER0;
+	reg += (((byte_lane >> 1) * DDRIODQ_BL_OFFSET) +
+		(channel * DDRIODQ_CH_OFFSET));
+	temp = msg_port_alt_read(DDRPHY, reg);
+	temp >>= 16;
+	temp &= 0x3F;
+
+	/* Adjust PI_COUNT */
+	pi_count += temp;
+
+	LEAVEFN();
+
+	return pi_count;
+}
+
+/*
+ * This function will program the WDQ delays based on an absolute
+ * number of PIs.
+ *
+ * (currently doesn't comprehend rank)
+ */
+void set_wdq(uint8_t channel, uint8_t rank,
+	     uint8_t byte_lane, uint32_t pi_count)
+{
+	uint32_t reg;
+	uint32_t msk;
+	uint32_t temp;
+
+	ENTERFN();
+
+	DPF(D_TRN, "Wdq ch%d rnk%d ln%d : pi=%03X\n",
+	    channel, rank, byte_lane, pi_count);
+
+	/*
+	 * RDPTR (1/2 MCLK, 64 PIs)
+	 * BL0 -> B01PTRCTL0[03:00] (0x0-0xF)
+	 * BL1 -> B01PTRCTL0[15:12] (0x0-0xF)
+	 */
+	reg = B01PTRCTL0 + ((byte_lane >> 1) * DDRIODQ_BL_OFFSET) +
+		(channel * DDRIODQ_CH_OFFSET);
+	msk = (byte_lane & BIT0) ? (BIT15 | BIT14 | BIT13 | BIT12) :
+		(BIT3 | BIT2 | BIT1 | BIT0);
+	temp = pi_count / HALF_CLK;
+	temp <<= (byte_lane & BIT0) ? 12 : 0;
+	mrc_alt_write_mask(DDRPHY, reg, temp, msk);
+
+	/* Adjust PI_COUNT */
+	pi_count -= ((pi_count / HALF_CLK) & 0xF) * HALF_CLK;
+
+	/*
+	 * PI (1/64 MCLK, 1 PIs)
+	 * BL0 -> B0DLLPICODER0[13:08] (0x00-0x3F)
+	 * BL1 -> B1DLLPICODER0[13:08] (0x00-0x3F)
+	 */
+	reg = (byte_lane & BIT0) ? B1DLLPICODER0 : B0DLLPICODER0;
+	reg += (((byte_lane >> 1) * DDRIODQ_BL_OFFSET) +
+		(channel * DDRIODQ_CH_OFFSET));
+	msk = (BIT13 | BIT12 | BIT11 | BIT10 | BIT9 | BIT8);
+	temp = pi_count << 8;
+	mrc_alt_write_mask(DDRPHY, reg, temp, msk);
+
+	/*
+	 * DEADBAND
+	 * BL0/1 -> B01DBCTL1[06/09] (+1 select)
+	 * BL0/1 -> B01DBCTL1[00/03] (enable)
+	 */
+	reg = B01DBCTL1 + ((byte_lane >> 1) * DDRIODQ_BL_OFFSET) +
+		(channel * DDRIODQ_CH_OFFSET);
+	msk = 0x00;
+	temp = 0x00;
+
+	/* enable */
+	msk |= (byte_lane & BIT0) ? BIT3 : BIT0;
+	if ((pi_count < EARLY_DB) || (pi_count > LATE_DB))
+		temp |= msk;
+
+	/* select */
+	msk |= (byte_lane & BIT0) ? BIT9 : BIT6;
+	if (pi_count < EARLY_DB)
+		temp |= msk;
+
+	mrc_alt_write_mask(DDRPHY, reg, temp, msk);
+
+	/* error check */
+	if (pi_count > 0x3F) {
+		training_message(channel, rank, byte_lane);
+		mrc_post_code(0xee, 0xe3);
+	}
+
+	LEAVEFN();
+}
+
+/*
+ * This function will return the amount of WDQ delay on the given
+ * channel, rank, byte_lane as an absolute PI count.
+ *
+ * (currently doesn't comprehend rank)
+ */
+uint32_t get_wdq(uint8_t channel, uint8_t rank, uint8_t byte_lane)
+{
+	uint32_t reg;
+	uint32_t temp;
+	uint32_t pi_count;
+
+	ENTERFN();
+
+	/*
+	 * RDPTR (1/2 MCLK, 64 PIs)
+	 * BL0 -> B01PTRCTL0[03:00] (0x0-0xF)
+	 * BL1 -> B01PTRCTL0[15:12] (0x0-0xF)
+	 */
+	reg = B01PTRCTL0 + ((byte_lane >> 1) * DDRIODQ_BL_OFFSET) +
+		(channel * DDRIODQ_CH_OFFSET);
+	temp = msg_port_alt_read(DDRPHY, reg);
+	temp >>= (byte_lane & BIT0) ? (12) : (0);
+	temp &= 0xF;
+
+	/* Adjust PI_COUNT */
+	pi_count = temp * HALF_CLK;
+
+	/*
+	 * PI (1/64 MCLK, 1 PIs)
+	 * BL0 -> B0DLLPICODER0[13:08] (0x00-0x3F)
+	 * BL1 -> B1DLLPICODER0[13:08] (0x00-0x3F)
+	 */
+	reg = (byte_lane & BIT0) ? B1DLLPICODER0 : B0DLLPICODER0;
+	reg += (((byte_lane >> 1) * DDRIODQ_BL_OFFSET) +
+		(channel * DDRIODQ_CH_OFFSET));
+	temp = msg_port_alt_read(DDRPHY, reg);
+	temp >>= 8;
+	temp &= 0x3F;
+
+	/* Adjust PI_COUNT */
+	pi_count += temp;
+
+	LEAVEFN();
+
+	return pi_count;
+}
+
+/*
+ * This function will program the WCMD delays based on an absolute
+ * number of PIs.
+ */
+void set_wcmd(uint8_t channel, uint32_t pi_count)
+{
+	uint32_t reg;
+	uint32_t msk;
+	uint32_t temp;
+
+	ENTERFN();
+
+	/*
+	 * RDPTR (1/2 MCLK, 64 PIs)
+	 * CMDPTRREG[11:08] (0x0-0xF)
+	 */
+	reg = CMDPTRREG + (channel * DDRIOCCC_CH_OFFSET);
+	msk = (BIT11 | BIT10 | BIT9 | BIT8);
+	temp = pi_count / HALF_CLK;
+	temp <<= 8;
+	mrc_alt_write_mask(DDRPHY, reg, temp, msk);
+
+	/* Adjust PI_COUNT */
+	pi_count -= ((pi_count / HALF_CLK) & 0xF) * HALF_CLK;
+
+	/*
+	 * PI (1/64 MCLK, 1 PIs)
+	 * CMDDLLPICODER0[29:24] -> CMDSLICE R3 (unused)
+	 * CMDDLLPICODER0[21:16] -> CMDSLICE L3 (unused)
+	 * CMDDLLPICODER0[13:08] -> CMDSLICE R2 (unused)
+	 * CMDDLLPICODER0[05:00] -> CMDSLICE L2 (unused)
+	 * CMDDLLPICODER1[29:24] -> CMDSLICE R1 (unused)
+	 * CMDDLLPICODER1[21:16] -> CMDSLICE L1 (0x00-0x3F)
+	 * CMDDLLPICODER1[13:08] -> CMDSLICE R0 (unused)
+	 * CMDDLLPICODER1[05:00] -> CMDSLICE L0 (unused)
+	 */
+	reg = CMDDLLPICODER1 + (channel * DDRIOCCC_CH_OFFSET);
+
+	msk = (BIT29 | BIT28 | BIT27 | BIT26 | BIT25 | BIT24 |
+		BIT21 | BIT20 | BIT19 | BIT18 | BIT17 | BIT16 |
+		BIT13 | BIT12 | BIT11 | BIT10 | BIT9 | BIT8 |
+		BIT5 | BIT4 | BIT3 | BIT2 | BIT1 | BIT0);
+
+	temp = (pi_count << 24) | (pi_count << 16) |
+		(pi_count << 8) | (pi_count << 0);
+
+	mrc_alt_write_mask(DDRPHY, reg, temp, msk);
+	reg = CMDDLLPICODER0 + (channel * DDRIOCCC_CH_OFFSET);	/* PO */
+	mrc_alt_write_mask(DDRPHY, reg, temp, msk);
+
+	/*
+	 * DEADBAND
+	 * CMDCFGREG0[17] (+1 select)
+	 * CMDCFGREG0[16] (enable)
+	 */
+	reg = CMDCFGREG0 + (channel * DDRIOCCC_CH_OFFSET);
+	msk = 0x00;
+	temp = 0x00;
+
+	/* enable */
+	msk |= BIT16;
+	if ((pi_count < EARLY_DB) || (pi_count > LATE_DB))
+		temp |= msk;
+
+	/* select */
+	msk |= BIT17;
+	if (pi_count < EARLY_DB)
+		temp |= msk;
+
+	mrc_alt_write_mask(DDRPHY, reg, temp, msk);
+
+	/* error check */
+	if (pi_count > 0x3F)
+		mrc_post_code(0xee, 0xe4);
+
+	LEAVEFN();
+}
+
+/*
+ * This function will return the amount of WCMD delay on the given
+ * channel as an absolute PI count.
+ */
+uint32_t get_wcmd(uint8_t channel)
+{
+	uint32_t reg;
+	uint32_t temp;
+	uint32_t pi_count;
+
+	ENTERFN();
+
+	/*
+	 * RDPTR (1/2 MCLK, 64 PIs)
+	 * CMDPTRREG[11:08] (0x0-0xF)
+	 */
+	reg = CMDPTRREG + (channel * DDRIOCCC_CH_OFFSET);
+	temp = msg_port_alt_read(DDRPHY, reg);
+	temp >>= 8;
+	temp &= 0xF;
+
+	/* Adjust PI_COUNT */
+	pi_count = temp * HALF_CLK;
+
+	/*
+	 * PI (1/64 MCLK, 1 PIs)
+	 * CMDDLLPICODER0[29:24] -> CMDSLICE R3 (unused)
+	 * CMDDLLPICODER0[21:16] -> CMDSLICE L3 (unused)
+	 * CMDDLLPICODER0[13:08] -> CMDSLICE R2 (unused)
+	 * CMDDLLPICODER0[05:00] -> CMDSLICE L2 (unused)
+	 * CMDDLLPICODER1[29:24] -> CMDSLICE R1 (unused)
+	 * CMDDLLPICODER1[21:16] -> CMDSLICE L1 (0x00-0x3F)
+	 * CMDDLLPICODER1[13:08] -> CMDSLICE R0 (unused)
+	 * CMDDLLPICODER1[05:00] -> CMDSLICE L0 (unused)
+	 */
+	reg = CMDDLLPICODER1 + (channel * DDRIOCCC_CH_OFFSET);
+	temp = msg_port_alt_read(DDRPHY, reg);
+	temp >>= 16;
+	temp &= 0x3F;
+
+	/* Adjust PI_COUNT */
+	pi_count += temp;
+
+	LEAVEFN();
+
+	return pi_count;
+}
+
+/*
+ * This function will program the WCLK delays based on an absolute
+ * number of PIs.
+ */
+void set_wclk(uint8_t channel, uint8_t rank, uint32_t pi_count)
+{
+	uint32_t reg;
+	uint32_t msk;
+	uint32_t temp;
+
+	ENTERFN();
+
+	/*
+	 * RDPTR (1/2 MCLK, 64 PIs)
+	 * CCPTRREG[15:12] -> CLK1 (0x0-0xF)
+	 * CCPTRREG[11:08] -> CLK0 (0x0-0xF)
+	 */
+	reg = CCPTRREG + (channel * DDRIOCCC_CH_OFFSET);
+	msk = (BIT15 | BIT14 | BIT13 | BIT12 | BIT11 | BIT10 | BIT9 | BIT8);
+	temp = ((pi_count / HALF_CLK) << 12) | ((pi_count / HALF_CLK) << 8);
+	mrc_alt_write_mask(DDRPHY, reg, temp, msk);
+
+	/* Adjust PI_COUNT */
+	pi_count -= ((pi_count / HALF_CLK) & 0xF) * HALF_CLK;
+
+	/*
+	 * PI (1/64 MCLK, 1 PIs)
+	 * ECCB1DLLPICODER0[13:08] -> CLK0 (0x00-0x3F)
+	 * ECCB1DLLPICODER0[21:16] -> CLK1 (0x00-0x3F)
+	 */
+	reg = rank ? ECCB1DLLPICODER0 : ECCB1DLLPICODER0;
+	reg += (channel * DDRIOCCC_CH_OFFSET);
+	msk = (BIT21 | BIT20 | BIT19 | BIT18 | BIT17 | BIT16 |
+		BIT13 | BIT12 | BIT11 | BIT10 | BIT9 | BIT8);
+	temp = (pi_count << 16) | (pi_count << 8);
+	mrc_alt_write_mask(DDRPHY, reg, temp, msk);
+	reg = rank ? ECCB1DLLPICODER1 : ECCB1DLLPICODER1;
+	reg += (channel * DDRIOCCC_CH_OFFSET);
+	mrc_alt_write_mask(DDRPHY, reg, temp, msk);
+	reg = rank ? ECCB1DLLPICODER2 : ECCB1DLLPICODER2;
+	reg += (channel * DDRIOCCC_CH_OFFSET);
+	mrc_alt_write_mask(DDRPHY, reg, temp, msk);
+	reg = rank ? ECCB1DLLPICODER3 : ECCB1DLLPICODER3;
+	reg += (channel * DDRIOCCC_CH_OFFSET);
+	mrc_alt_write_mask(DDRPHY, reg, temp, msk);
+
+	/*
+	 * DEADBAND
+	 * CCCFGREG1[11:08] (+1 select)
+	 * CCCFGREG1[03:00] (enable)
+	 */
+	reg = CCCFGREG1 + (channel * DDRIOCCC_CH_OFFSET);
+	msk = 0x00;
+	temp = 0x00;
+
+	/* enable */
+	msk |= (BIT3 | BIT2 | BIT1 | BIT0);
+	if ((pi_count < EARLY_DB) || (pi_count > LATE_DB))
+		temp |= msk;
+
+	/* select */
+	msk |= (BIT11 | BIT10 | BIT9 | BIT8);
+	if (pi_count < EARLY_DB)
+		temp |= msk;
+
+	mrc_alt_write_mask(DDRPHY, reg, temp, msk);
+
+	/* error check */
+	if (pi_count > 0x3F)
+		mrc_post_code(0xee, 0xe5);
+
+	LEAVEFN();
+}
+
+/*
+ * This function will return the amout of WCLK delay on the given
+ * channel, rank as an absolute PI count.
+ */
+uint32_t get_wclk(uint8_t channel, uint8_t rank)
+{
+	uint32_t reg;
+	uint32_t temp;
+	uint32_t pi_count;
+
+	ENTERFN();
+
+	/*
+	 * RDPTR (1/2 MCLK, 64 PIs)
+	 * CCPTRREG[15:12] -> CLK1 (0x0-0xF)
+	 * CCPTRREG[11:08] -> CLK0 (0x0-0xF)
+	 */
+	reg = CCPTRREG + (channel * DDRIOCCC_CH_OFFSET);
+	temp = msg_port_alt_read(DDRPHY, reg);
+	temp >>= rank ? 12 : 8;
+	temp &= 0xF;
+
+	/* Adjust PI_COUNT */
+	pi_count = temp * HALF_CLK;
+
+	/*
+	 * PI (1/64 MCLK, 1 PIs)
+	 * ECCB1DLLPICODER0[13:08] -> CLK0 (0x00-0x3F)
+	 * ECCB1DLLPICODER0[21:16] -> CLK1 (0x00-0x3F)
+	 */
+	reg = rank ? ECCB1DLLPICODER0 : ECCB1DLLPICODER0;
+	reg += (channel * DDRIOCCC_CH_OFFSET);
+	temp = msg_port_alt_read(DDRPHY, reg);
+	temp >>= rank ? 16 : 8;
+	temp &= 0x3F;
+
+	pi_count += temp;
+
+	LEAVEFN();
+
+	return pi_count;
+}
+
+/*
+ * This function will program the WCTL delays based on an absolute
+ * number of PIs.
+ *
+ * (currently doesn't comprehend rank)
+ */
+void set_wctl(uint8_t channel, uint8_t rank, uint32_t pi_count)
+{
+	uint32_t reg;
+	uint32_t msk;
+	uint32_t temp;
+
+	ENTERFN();
+
+	/*
+	 * RDPTR (1/2 MCLK, 64 PIs)
+	 * CCPTRREG[31:28] (0x0-0xF)
+	 * CCPTRREG[27:24] (0x0-0xF)
+	 */
+	reg = CCPTRREG + (channel * DDRIOCCC_CH_OFFSET);
+	msk = (BIT31 | BIT30 | BIT29 | BIT28 | BIT27 | BIT26 | BIT25 | BIT24);
+	temp = ((pi_count / HALF_CLK) << 28) | ((pi_count / HALF_CLK) << 24);
+	mrc_alt_write_mask(DDRPHY, reg, temp, msk);
+
+	/* Adjust PI_COUNT */
+	pi_count -= ((pi_count / HALF_CLK) & 0xF) * HALF_CLK;
+
+	/*
+	 * PI (1/64 MCLK, 1 PIs)
+	 * ECCB1DLLPICODER?[29:24] (0x00-0x3F)
+	 * ECCB1DLLPICODER?[29:24] (0x00-0x3F)
+	 */
+	reg = ECCB1DLLPICODER0 + (channel * DDRIOCCC_CH_OFFSET);
+	msk = (BIT29 | BIT28 | BIT27 | BIT26 | BIT25 | BIT24);
+	temp = (pi_count << 24);
+	mrc_alt_write_mask(DDRPHY, reg, temp, msk);
+	reg = ECCB1DLLPICODER1 + (channel * DDRIOCCC_CH_OFFSET);
+	mrc_alt_write_mask(DDRPHY, reg, temp, msk);
+	reg = ECCB1DLLPICODER2 + (channel * DDRIOCCC_CH_OFFSET);
+	mrc_alt_write_mask(DDRPHY, reg, temp, msk);
+	reg = ECCB1DLLPICODER3 + (channel * DDRIOCCC_CH_OFFSET);
+	mrc_alt_write_mask(DDRPHY, reg, temp, msk);
+
+	/*
+	 * DEADBAND
+	 * CCCFGREG1[13:12] (+1 select)
+	 * CCCFGREG1[05:04] (enable)
+	 */
+	reg = CCCFGREG1 + (channel * DDRIOCCC_CH_OFFSET);
+	msk = 0x00;
+	temp = 0x00;
+
+	/* enable */
+	msk |= (BIT5 | BIT4);
+	if ((pi_count < EARLY_DB) || (pi_count > LATE_DB))
+		temp |= msk;
+
+	/* select */
+	msk |= (BIT13 | BIT12);
+	if (pi_count < EARLY_DB)
+		temp |= msk;
+
+	mrc_alt_write_mask(DDRPHY, reg, temp, msk);
+
+	/* error check */
+	if (pi_count > 0x3F)
+		mrc_post_code(0xee, 0xe6);
+
+	LEAVEFN();
+}
+
+/*
+ * This function will return the amount of WCTL delay on the given
+ * channel, rank as an absolute PI count.
+ *
+ * (currently doesn't comprehend rank)
+ */
+uint32_t get_wctl(uint8_t channel, uint8_t rank)
+{
+	uint32_t reg;
+	uint32_t temp;
+	uint32_t pi_count;
+
+	ENTERFN();
+
+	/*
+	 * RDPTR (1/2 MCLK, 64 PIs)
+	 * CCPTRREG[31:28] (0x0-0xF)
+	 * CCPTRREG[27:24] (0x0-0xF)
+	 */
+	reg = CCPTRREG + (channel * DDRIOCCC_CH_OFFSET);
+	temp = msg_port_alt_read(DDRPHY, reg);
+	temp >>= 24;
+	temp &= 0xF;
+
+	/* Adjust PI_COUNT */
+	pi_count = temp * HALF_CLK;
+
+	/*
+	 * PI (1/64 MCLK, 1 PIs)
+	 * ECCB1DLLPICODER?[29:24] (0x00-0x3F)
+	 * ECCB1DLLPICODER?[29:24] (0x00-0x3F)
+	 */
+	reg = ECCB1DLLPICODER0 + (channel * DDRIOCCC_CH_OFFSET);
+	temp = msg_port_alt_read(DDRPHY, reg);
+	temp >>= 24;
+	temp &= 0x3F;
+
+	/* Adjust PI_COUNT */
+	pi_count += temp;
+
+	LEAVEFN();
+
+	return pi_count;
+}
+
+/*
+ * This function will program the internal Vref setting in a given
+ * byte lane in a given channel.
+ */
+void set_vref(uint8_t channel, uint8_t byte_lane, uint32_t setting)
+{
+	uint32_t reg = (byte_lane & 0x1) ? (B1VREFCTL) : (B0VREFCTL);
+
+	ENTERFN();
+
+	DPF(D_TRN, "Vref ch%d ln%d : val=%03X\n",
+	    channel, byte_lane, setting);
+
+	mrc_alt_write_mask(DDRPHY, (reg + (channel * DDRIODQ_CH_OFFSET) +
+		((byte_lane >> 1) * DDRIODQ_BL_OFFSET)),
+		(vref_codes[setting] << 2),
+		(BIT7 | BIT6 | BIT5 | BIT4 | BIT3 | BIT2));
+
+	/*
+	 * need to wait ~300ns for Vref to settle
+	 * (check that this is necessary)
+	 */
+	delay_n(300);
+
+	/* ??? may need to clear pointers ??? */
+
+	LEAVEFN();
+}
+
+/*
+ * This function will return the internal Vref setting for the given
+ * channel, byte_lane.
+ */
+uint32_t get_vref(uint8_t channel, uint8_t byte_lane)
+{
+	uint8_t j;
+	uint32_t ret_val = sizeof(vref_codes) / 2;
+	uint32_t reg = (byte_lane & 0x1) ? (B1VREFCTL) : (B0VREFCTL);
+	uint32_t temp;
+
+	ENTERFN();
+
+	temp = msg_port_alt_read(DDRPHY, (reg + (channel * DDRIODQ_CH_OFFSET) +
+		((byte_lane >> 1) * DDRIODQ_BL_OFFSET)));
+	temp >>= 2;
+	temp &= 0x3F;
+
+	for (j = 0; j < sizeof(vref_codes); j++) {
+		if (vref_codes[j] == temp) {
+			ret_val = j;
+			break;
+		}
+	}
+
+	LEAVEFN();
+
+	return ret_val;
+}
+
+/*
+ * This function will return a 32-bit address in the desired
+ * channel and rank.
+ */
+uint32_t get_addr(uint8_t channel, uint8_t rank)
+{
+	uint32_t offset = 0x02000000;	/* 32MB */
+
+	/* Begin product specific code */
+	if (channel > 0) {
+		DPF(D_ERROR, "ILLEGAL CHANNEL\n");
+		DEAD_LOOP();
+	}
+
+	if (rank > 1) {
+		DPF(D_ERROR, "ILLEGAL RANK\n");
+		DEAD_LOOP();
+	}
+
+	/* use 256MB lowest density as per DRP == 0x0003 */
+	offset += rank * (256 * 1024 * 1024);
+
+	return offset;
+}
+
+/*
+ * This function will sample the DQTRAINSTS registers in the given
+ * channel/rank SAMPLE_SIZE times looking for a valid '0' or '1'.
+ *
+ * It will return an encoded 32-bit date in which each bit corresponds to
+ * the sampled value on the byte lane.
+ */
+uint32_t sample_dqs(struct mrc_params *mrc_params, uint8_t channel,
+		    uint8_t rank, bool rcvn)
+{
+	uint8_t j;	/* just a counter */
+	uint8_t bl;	/* which BL in the module (always 2 per module) */
+	uint8_t bl_grp;	/* which BL module */
+	/* byte lane divisor */
+	uint8_t bl_divisor = (mrc_params->channel_width == X16) ? 2 : 1;
+	uint32_t msk[2];	/* BLx in module */
+	/* DQTRAINSTS register contents for each sample */
+	uint32_t sampled_val[SAMPLE_SIZE];
+	uint32_t num_0s;	/* tracks the number of '0' samples */
+	uint32_t num_1s;	/* tracks the number of '1' samples */
+	uint32_t ret_val = 0x00;	/* assume all '0' samples */
+	uint32_t address = get_addr(channel, rank);
+
+	/* initialise msk[] */
+	msk[0] = rcvn ? BIT1 : BIT9;	/* BL0 */
+	msk[1] = rcvn ? BIT0 : BIT8;	/* BL1 */
+
+	/* cycle through each byte lane group */
+	for (bl_grp = 0; bl_grp < (NUM_BYTE_LANES / bl_divisor) / 2; bl_grp++) {
+		/* take SAMPLE_SIZE samples */
+		for (j = 0; j < SAMPLE_SIZE; j++) {
+			hte_mem_op(address, mrc_params->first_run,
+				   rcvn ? 0 : 1);
+			mrc_params->first_run = 0;
+
+			/*
+			 * record the contents of the proper
+			 * DQTRAINSTS register
+			 */
+			sampled_val[j] = msg_port_alt_read(DDRPHY,
+				(DQTRAINSTS +
+				(bl_grp * DDRIODQ_BL_OFFSET) +
+				(channel * DDRIODQ_CH_OFFSET)));
+		}
+
+		/*
+		 * look for a majority value (SAMPLE_SIZE / 2) + 1
+		 * on the byte lane and set that value in the corresponding
+		 * ret_val bit
+		 */
+		for (bl = 0; bl < 2; bl++) {
+			num_0s = 0x00;	/* reset '0' tracker for byte lane */
+			num_1s = 0x00;	/* reset '1' tracker for byte lane */
+			for (j = 0; j < SAMPLE_SIZE; j++) {
+				if (sampled_val[j] & msk[bl])
+					num_1s++;
+				else
+					num_0s++;
+			}
+		if (num_1s > num_0s)
+			ret_val |= (1 << (bl + (bl_grp * 2)));
+		}
+	}
+
+	/*
+	 * "ret_val.0" contains the status of BL0
+	 * "ret_val.1" contains the status of BL1
+	 * "ret_val.2" contains the status of BL2
+	 * etc.
+	 */
+	return ret_val;
+}
+
+/* This function will find the rising edge transition on RCVN or WDQS */
+void find_rising_edge(struct mrc_params *mrc_params, uint32_t delay[],
+		      uint8_t channel, uint8_t rank, bool rcvn)
+{
+	bool all_edges_found;	/* determines stop condition */
+	bool direction[NUM_BYTE_LANES];	/* direction indicator */
+	uint8_t sample;	/* sample counter */
+	uint8_t bl;	/* byte lane counter */
+	/* byte lane divisor */
+	uint8_t bl_divisor = (mrc_params->channel_width == X16) ? 2 : 1;
+	uint32_t sample_result[SAMPLE_CNT];	/* results of sample_dqs() */
+	uint32_t temp;
+	uint32_t transition_pattern;
+
+	ENTERFN();
+
+	/* select hte and request initial configuration */
+	select_hte();
+	mrc_params->first_run = 1;
+
+	/* Take 3 sample points (T1,T2,T3) to obtain a transition pattern */
+	for (sample = 0; sample < SAMPLE_CNT; sample++) {
+		/* program the desired delays for sample */
+		for (bl = 0; bl < (NUM_BYTE_LANES / bl_divisor); bl++) {
+			/* increase sample delay by 26 PI (0.2 CLK) */
+			if (rcvn) {
+				set_rcvn(channel, rank, bl,
+					 delay[bl] + (sample * SAMPLE_DLY));
+			} else {
+				set_wdqs(channel, rank, bl,
+					 delay[bl] + (sample * SAMPLE_DLY));
+			}
+		}
+
+		/* take samples (Tsample_i) */
+		sample_result[sample] = sample_dqs(mrc_params,
+			channel, rank, rcvn);
+
+		DPF(D_TRN,
+		    "Find rising edge %s ch%d rnk%d: #%d dly=%d dqs=%02X\n",
+		    (rcvn ? "RCVN" : "WDQS"), channel, rank, sample,
+		    sample * SAMPLE_DLY, sample_result[sample]);
+	}
+
+	/*
+	 * This pattern will help determine where we landed and ultimately
+	 * how to place RCVEN/WDQS.
+	 */
+	for (bl = 0; bl < (NUM_BYTE_LANES / bl_divisor); bl++) {
+		/* build transition_pattern (MSB is 1st sample) */
+		transition_pattern = 0;
+		for (sample = 0; sample < SAMPLE_CNT; sample++) {
+			transition_pattern |=
+				((sample_result[sample] & (1 << bl)) >> bl) <<
+				(SAMPLE_CNT - 1 - sample);
+		}
+
+		DPF(D_TRN, "=== transition pattern %d\n", transition_pattern);
+
+		/*
+		 * set up to look for rising edge based on
+		 * transition_pattern
+		 */
+		switch (transition_pattern) {
+		case 0:	/* sampled 0->0->0 */
+			/* move forward from T3 looking for 0->1 */
+			delay[bl] += 2 * SAMPLE_DLY;
+			direction[bl] = FORWARD;
+			break;
+		case 1:	/* sampled 0->0->1 */
+		case 5:	/* sampled 1->0->1 (bad duty cycle) *HSD#237503* */
+			/* move forward from T2 looking for 0->1 */
+			delay[bl] += 1 * SAMPLE_DLY;
+			direction[bl] = FORWARD;
+			break;
+		case 2:	/* sampled 0->1->0 (bad duty cycle) *HSD#237503* */
+		case 3:	/* sampled 0->1->1 */
+			/* move forward from T1 looking for 0->1 */
+			delay[bl] += 0 * SAMPLE_DLY;
+			direction[bl] = FORWARD;
+			break;
+		case 4:	/* sampled 1->0->0 (assumes BL8, HSD#234975) */
+			/* move forward from T3 looking for 0->1 */
+			delay[bl] += 2 * SAMPLE_DLY;
+			direction[bl] = FORWARD;
+			break;
+		case 6:	/* sampled 1->1->0 */
+		case 7:	/* sampled 1->1->1 */
+			/* move backward from T1 looking for 1->0 */
+			delay[bl] += 0 * SAMPLE_DLY;
+			direction[bl] = BACKWARD;
+			break;
+		default:
+			mrc_post_code(0xee, 0xee);
+			break;
+		}
+
+		/* program delays */
+		if (rcvn)
+			set_rcvn(channel, rank, bl, delay[bl]);
+		else
+			set_wdqs(channel, rank, bl, delay[bl]);
+	}
+
+	/*
+	 * Based on the observed transition pattern on the byte lane,
+	 * begin looking for a rising edge with single PI granularity.
+	 */
+	do {
+		all_edges_found = true;	/* assume all byte lanes passed */
+		/* take a sample */
+		temp = sample_dqs(mrc_params, channel, rank, rcvn);
+		/* check all each byte lane for proper edge */
+		for (bl = 0; bl < (NUM_BYTE_LANES / bl_divisor); bl++) {
+			if (temp & (1 << bl)) {
+				/* sampled "1" */
+				if (direction[bl] == BACKWARD) {
+					/*
+					 * keep looking for edge
+					 * on this byte lane
+					 */
+					all_edges_found = false;
+					delay[bl] -= 1;
+					if (rcvn) {
+						set_rcvn(channel, rank,
+							 bl, delay[bl]);
+					} else {
+						set_wdqs(channel, rank,
+							 bl, delay[bl]);
+					}
+				}
+			} else {
+				/* sampled "0" */
+				if (direction[bl] == FORWARD) {
+					/*
+					 * keep looking for edge
+					 * on this byte lane
+					 */
+					all_edges_found = false;
+					delay[bl] += 1;
+					if (rcvn) {
+						set_rcvn(channel, rank,
+							 bl, delay[bl]);
+					} else {
+						set_wdqs(channel, rank,
+							 bl, delay[bl]);
+					}
+				}
+			}
+		}
+	} while (!all_edges_found);
+
+	/* restore DDR idle state */
+	dram_init_command(DCMD_PREA(rank));
+
+	DPF(D_TRN, "Delay %03X %03X %03X %03X\n",
+	    delay[0], delay[1], delay[2], delay[3]);
+
+	LEAVEFN();
+}
+
+/*
+ * This function will return a 32 bit mask that will be used to
+ * check for byte lane failures.
+ */
+uint32_t byte_lane_mask(struct mrc_params *mrc_params)
+{
+	uint32_t j;
+	uint32_t ret_val = 0x00;
+
+	/*
+	 * set ret_val based on NUM_BYTE_LANES such that you will check
+	 * only BL0 in result
+	 *
+	 * (each bit in result represents a byte lane)
+	 */
+	for (j = 0; j < MAX_BYTE_LANES; j += NUM_BYTE_LANES)
+		ret_val |= (1 << ((j / NUM_BYTE_LANES) * NUM_BYTE_LANES));
+
+	/*
+	 * HSD#235037
+	 * need to adjust the mask for 16-bit mode
+	 */
+	if (mrc_params->channel_width == X16)
+		ret_val |= (ret_val << 2);
+
+	return ret_val;
+}
+
+/*
+ * Check memory executing simple write/read/verify at the specified address.
+ *
+ * Bits in the result indicate failure on specific byte lane.
+ */
+uint32_t check_rw_coarse(struct mrc_params *mrc_params, uint32_t address)
+{
+	uint32_t result = 0;
+	uint8_t first_run = 0;
+
+	if (mrc_params->hte_setup) {
+		mrc_params->hte_setup = 0;
+		first_run = 1;
+		select_hte();
+	}
+
+	result = hte_basic_write_read(mrc_params, address, first_run,
+				      WRITE_TRAIN);
+
+	DPF(D_TRN, "check_rw_coarse result is %x\n", result);
+
+	return result;
+}
+
+/*
+ * Check memory executing write/read/verify of many data patterns
+ * at the specified address. Bits in the result indicate failure
+ * on specific byte lane.
+ */
+uint32_t check_bls_ex(struct mrc_params *mrc_params, uint32_t address)
+{
+	uint32_t result;
+	uint8_t first_run = 0;
+
+	if (mrc_params->hte_setup) {
+		mrc_params->hte_setup = 0;
+		first_run = 1;
+		select_hte();
+	}
+
+	result = hte_write_stress_bit_lanes(mrc_params, address, first_run);
+
+	DPF(D_TRN, "check_bls_ex result is %x\n", result);
+
+	return result;
+}
+
+/*
+ * 32-bit LFSR with characteristic polynomial: X^32 + X^22 +X^2 + X^1
+ *
+ * The function takes pointer to previous 32 bit value and
+ * modifies it to next value.
+ */
+void lfsr32(uint32_t *lfsr_ptr)
+{
+	uint32_t bit;
+	uint32_t lfsr;
+	int i;
+
+	lfsr = *lfsr_ptr;
+
+	for (i = 0; i < 32; i++) {
+		bit = 1 ^ (lfsr & BIT0);
+		bit = bit ^ ((lfsr & BIT1) >> 1);
+		bit = bit ^ ((lfsr & BIT2) >> 2);
+		bit = bit ^ ((lfsr & BIT22) >> 22);
+
+		lfsr = ((lfsr >> 1) | (bit << 31));
+	}
+
+	*lfsr_ptr = lfsr;
+}
+
+/* Clear the pointers in a given byte lane in a given channel */
+void clear_pointers(void)
+{
+	uint8_t channel;
+	uint8_t bl;
+
+	ENTERFN();
+
+	for (channel = 0; channel < NUM_CHANNELS; channel++) {
+		for (bl = 0; bl < NUM_BYTE_LANES; bl++) {
+			mrc_alt_write_mask(DDRPHY,
+					   (B01PTRCTL1 +
+					   (channel * DDRIODQ_CH_OFFSET) +
+					   ((bl >> 1) * DDRIODQ_BL_OFFSET)),
+					   ~BIT8, BIT8);
+
+			mrc_alt_write_mask(DDRPHY,
+					   (B01PTRCTL1 +
+					   (channel * DDRIODQ_CH_OFFSET) +
+					   ((bl >> 1) * DDRIODQ_BL_OFFSET)),
+					   BIT8, BIT8);
+		}
+	}
+
+	LEAVEFN();
+}
+
+static void print_timings_internal(uint8_t algo, uint8_t channel, uint8_t rank,
+				   uint8_t bl_divisor)
+{
+	uint8_t bl;
+
+	switch (algo) {
+	case RCVN:
+		DPF(D_INFO, "\nRCVN[%02d:%02d]", channel, rank);
+		break;
+	case WDQS:
+		DPF(D_INFO, "\nWDQS[%02d:%02d]", channel, rank);
+		break;
+	case WDQX:
+		DPF(D_INFO, "\nWDQx[%02d:%02d]", channel, rank);
+		break;
+	case RDQS:
+		DPF(D_INFO, "\nRDQS[%02d:%02d]", channel, rank);
+		break;
+	case VREF:
+		DPF(D_INFO, "\nVREF[%02d:%02d]", channel, rank);
+		break;
+	case WCMD:
+		DPF(D_INFO, "\nWCMD[%02d:%02d]", channel, rank);
+		break;
+	case WCTL:
+		DPF(D_INFO, "\nWCTL[%02d:%02d]", channel, rank);
+		break;
+	case WCLK:
+		DPF(D_INFO, "\nWCLK[%02d:%02d]", channel, rank);
+		break;
+	default:
+		break;
+	}
+
+	for (bl = 0; bl < (NUM_BYTE_LANES / bl_divisor); bl++) {
+		switch (algo) {
+		case RCVN:
+			DPF(D_INFO, " %03d", get_rcvn(channel, rank, bl));
+			break;
+		case WDQS:
+			DPF(D_INFO, " %03d", get_wdqs(channel, rank, bl));
+			break;
+		case WDQX:
+			DPF(D_INFO, " %03d", get_wdq(channel, rank, bl));
+			break;
+		case RDQS:
+			DPF(D_INFO, " %03d", get_rdqs(channel, rank, bl));
+			break;
+		case VREF:
+			DPF(D_INFO, " %03d", get_vref(channel, bl));
+			break;
+		case WCMD:
+			DPF(D_INFO, " %03d", get_wcmd(channel));
+			break;
+		case WCTL:
+			DPF(D_INFO, " %03d", get_wctl(channel, rank));
+			break;
+		case WCLK:
+			DPF(D_INFO, " %03d", get_wclk(channel, rank));
+			break;
+		default:
+			break;
+		}
+	}
+}
+
+void print_timings(struct mrc_params *mrc_params)
+{
+	uint8_t algo;
+	uint8_t channel;
+	uint8_t rank;
+	uint8_t bl_divisor = (mrc_params->channel_width == X16) ? 2 : 1;
+
+	DPF(D_INFO, "\n---------------------------");
+	DPF(D_INFO, "\nALGO[CH:RK] BL0 BL1 BL2 BL3");
+	DPF(D_INFO, "\n===========================");
+
+	for (algo = 0; algo < MAX_ALGOS; algo++) {
+		for (channel = 0; channel < NUM_CHANNELS; channel++) {
+			if (mrc_params->channel_enables & (1 << channel)) {
+				for (rank = 0; rank < NUM_RANKS; rank++) {
+					if (mrc_params->rank_enables &
+						(1 << rank)) {
+						print_timings_internal(algo,
+							channel, rank,
+							bl_divisor);
+					}
+				}
+			}
+		}
+	}
+
+	DPF(D_INFO, "\n---------------------------");
+	DPF(D_INFO, "\n");
+}