diff --git a/drivers/brcm/emmc/emmc_chal_sd.c b/drivers/brcm/emmc/emmc_chal_sd.c
new file mode 100644
index 0000000..34d761c
--- /dev/null
+++ b/drivers/brcm/emmc/emmc_chal_sd.c
@@ -0,0 +1,1017 @@
+/*
+ * Copyright (c) 2016 - 2020, Broadcom
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <assert.h>
+#include <string.h>
+
+#include <lib/mmio.h>
+
+#include <platform_def.h>
+
+#include "bcm_emmc.h"
+#include "emmc_chal_types.h"
+#include "emmc_chal_sd.h"
+#include "emmc_pboot_hal_memory_drv.h"
+
+extern void emmc_soft_reset(void);
+
+#define SD_VDD_WINDOW_1_6_TO_1_7        0x00000010	// 1.6 V to 1.7 Volts
+#define SD_VDD_WINDOW_1_7_TO_1_8        0x00000020	// 1.7 V to 1.8 Volts
+#define SD_VDD_WINDOW_1_8_TO_1_9        0x00000040	// 1.8 V to 1.9 Volts
+#define SD_VDD_WINDOW_1_9_TO_2_0        0x00000080	// 1.9 V to 2.0 Volts
+#define SD_VDD_WINDOW_2_0_TO_2_1        0x00000100	// 2.0 V to 2.1 Volts
+#define SD_VDD_WINDOW_2_1_TO_2_2        0x00000200	// 2.1 V to 2.2 Volts
+#define SD_VDD_WINDOW_2_2_TO_2_3        0x00000400	// 2.2 V to 2.3 Volts
+#define SD_VDD_WINDOW_2_3_TO_2_4        0x00000800	// 2.3 V to 2.4 Volts
+#define SD_VDD_WINDOW_2_4_TO_2_5        0x00001000	// 2.4 V to 2.5 Volts
+#define SD_VDD_WINDOW_2_5_TO_2_6        0x00002000	// 2.5 V to 2.6 Volts
+#define SD_VDD_WINDOW_2_6_TO_2_7        0x00004000	// 2.6 V to 2.7 Volts
+#define SD_VDD_WINDOW_2_7_TO_2_8        0x00008000	// 2.7 V to 2.8 Volts
+#define SD_VDD_WINDOW_2_8_TO_2_9        0x00010000	// 2.8 V to 2.9 Volts
+#define SD_VDD_WINDOW_2_9_TO_3_0        0x00020000	// 2.9 V to 3.0 Volts
+#define SD_VDD_WINDOW_3_0_TO_3_1        0x00040000	// 3.0 V to 3.1 Volts
+#define SD_VDD_WINDOW_3_1_TO_3_2        0x00080000	// 3.1 V to 3.2 Volts
+#define SD_VDD_WINDOW_3_2_TO_3_3        0x00100000	// 3.2 V to 3.3 Volts
+#define SD_VDD_WINDOW_3_3_TO_3_4        0x00200000	// 3.3 V to 3.4 Volts
+#define SD_VDD_WINDOW_3_4_TO_3_5        0x00400000	// 3.4 V to 3.5 Volts
+#define SD_VDD_WINDOW_3_5_TO_3_6        0x00800000	// 3.5 V to 3.6 Volts
+
+#define SD_VDD_WINDOW_1_6_TO_2_6        (SD_VDD_WINDOW_1_6_TO_1_7 |	\
+					 SD_VDD_WINDOW_1_7_TO_1_8 |	\
+					 SD_VDD_WINDOW_1_8_TO_1_9 |	\
+					 SD_VDD_WINDOW_1_9_TO_2_0 |	\
+					 SD_VDD_WINDOW_2_0_TO_2_1 |	\
+					 SD_VDD_WINDOW_2_1_TO_2_2 |	\
+					 SD_VDD_WINDOW_2_2_TO_2_3 |	\
+					 SD_VDD_WINDOW_2_3_TO_2_4 |	\
+					 SD_VDD_WINDOW_2_4_TO_2_5 |	\
+					 SD_VDD_WINDOW_2_5_TO_2_6)
+
+#define SD_VDD_WINDOW_2_6_TO_3_2        (SD_VDD_WINDOW_2_6_TO_2_7 |	\
+					 SD_VDD_WINDOW_2_7_TO_2_8 |	\
+					 SD_VDD_WINDOW_2_8_TO_2_9 |	\
+					 SD_VDD_WINDOW_2_9_TO_3_0 |	\
+					 SD_VDD_WINDOW_3_0_TO_3_1 |	\
+					 SD_VDD_WINDOW_3_1_TO_3_2)
+
+#define SD_VDD_WINDOW_3_2_TO_3_6        (SD_VDD_WINDOW_3_2_TO_3_3 |	\
+					 SD_VDD_WINDOW_3_3_TO_3_4 |	\
+					 SD_VDD_WINDOW_3_4_TO_3_5 |	\
+					 SD_VDD_WINDOW_3_5_TO_3_6)
+
+
+static int32_t chal_sd_set_power(struct sd_dev *handle,
+				 uint32_t voltage, uint32_t state);
+
+static void chal_sd_set_dma_boundary(struct sd_dev *handle, uint32_t boundary);
+
+static int32_t chal_sd_setup_handler(struct sd_dev *handle,
+				     uint32_t sdBbase, uint32_t hostBase);
+
+/*
+ * Configure host controller pwr settings,
+ * to match voltage requirements by SD Card
+ */
+static int32_t chal_sd_set_power(struct sd_dev *handle,
+				 uint32_t voltage, uint32_t state)
+{
+	int32_t rc, rval = SD_FAIL;
+	uint32_t time = 0;
+
+	if (handle == NULL)
+		return SD_INVALID_HANDLE;
+
+	mmio_clrsetbits_32(handle->ctrl.sdRegBaseAddr +
+			   SD4_EMMC_TOP_CTRL_OFFSET,
+			   (SD4_EMMC_TOP_CTRL_SDVSELVDD1_MASK |
+			    SD4_EMMC_TOP_CTRL_SDPWR_MASK),
+			   (voltage << 9));
+
+	/*
+	 * Long delay is required here in emulation.  Without this, the initial
+	 * commands sent to the eMMC card timeout.  We don't know if this
+	 * delay is necessary with silicon, leaving in for safety.
+	 * It is observed that 403ms on emulation system and as per the clock
+	 * calculations it is expected to complete with in 1ms on chip
+	 */
+	do {
+		rc =  mmio_read_32(handle->ctrl.sdRegBaseAddr +
+				   SD4_EMMC_TOP_INTR_OFFSET);
+
+		if ((rc & SD4_EMMC_TOP_INTR_CRDINS_MASK) ==
+				SD4_EMMC_TOP_INTR_CRDINS_MASK)
+			break;
+
+		mdelay(1);
+	} while (time++ < EMMC_CARD_DETECT_TIMEOUT_MS);
+
+	if (time >= EMMC_CARD_DETECT_TIMEOUT_MS) {
+		ERROR("EMMC: Card insert event detection timeout\n");
+		return rval;
+	}
+
+	VERBOSE("EMMC: Card detection delay: %dms\n", time);
+
+	if (state)
+		mmio_setbits_32(handle->ctrl.sdRegBaseAddr + SD4_EMMC_TOP_CTRL_OFFSET,
+				SD4_EMMC_TOP_CTRL_SDPWR_MASK);
+
+	/* dummy write & ack to verify if the sdio is ready to send commads */
+	mmio_write_32(handle->ctrl.sdRegBaseAddr + SD4_EMMC_TOP_ARG_OFFSET, 0);
+	mmio_write_32(handle->ctrl.sdRegBaseAddr + SD4_EMMC_TOP_CMD_OFFSET, 0);
+
+	/*
+	 * 63ms observed on emulation system, As per clock calculations
+	 * it will complete  < 1ms on chip.
+	 */
+	time = 0;
+	do {
+		rc = mmio_read_32(handle->ctrl.sdRegBaseAddr +
+				  SD4_EMMC_TOP_INTR_OFFSET);
+
+		if (rc & SD4_EMMC_TOP_INTR_ERRIRQ_MASK)
+			break;
+
+		if ((rc & SD4_EMMC_TOP_INTR_CMDDONE_MASK) ==
+				SD4_EMMC_TOP_INTR_CMDDONE_MASK)
+			break;
+
+		mdelay(1);
+	} while (time++ < EMMC_CMD_TIMEOUT_MS);
+
+	if (time >= EMMC_CMD_TIMEOUT_MS) {
+		WARN("%s %d Initial dummy command timeout is happened\n",
+		      __func__, __LINE__);
+		return rval;
+	}
+
+	VERBOSE("EMMC: Dummy Command delay: %dms\n", time);
+
+	return SD_OK;
+}
+
+/*
+ * Configure DMA Boundaries
+ */
+static void chal_sd_set_dma_boundary(struct sd_dev *handle, uint32_t boundary)
+{
+	if (handle == NULL)
+		return;
+
+	mmio_clrsetbits_32(handle->ctrl.sdRegBaseAddr +
+			   SD4_EMMC_TOP_BLOCK_OFFSET,
+			   SD4_EMMC_TOP_BLOCK_HSBS_MASK, boundary);
+}
+
+static int32_t chal_sd_setup_handler(struct sd_dev *handle, uint32_t sdBase,
+				     uint32_t hostBase)
+{
+	if (handle == NULL)
+		return SD_INVALID_HANDLE;
+
+	handle->ctrl.sdRegBaseAddr = sdBase;
+	handle->ctrl.hostRegBaseAddr = hostBase;
+	handle->ctrl.present = 0;
+	handle->ctrl.rca = 0;
+	handle->ctrl.blkGapEnable = 0;
+	handle->ctrl.cmdStatus = 0;
+
+	return SD_OK;
+}
+
+/*
+ * Initialize SD Host controller
+ */
+int32_t chal_sd_init(CHAL_HANDLE *sd_handle)
+{
+	uint32_t cap_val_l = 0;
+	uint32_t ctl_val, voltage;
+	uint32_t timeout_val;
+	struct sd_dev *handle;
+	uint32_t reg_val;
+	int32_t rval = SD_FAIL;
+
+	if (sd_handle == NULL)
+		return SD_INVALID_HANDLE;
+
+	handle = (struct sd_dev *)sd_handle;
+
+	/*
+	 * Set SDIO Host Controller capabilities register
+	 */
+	EMMC_TRACE("Set Host Controller Capabilities register\n");
+
+	reg_val = 0;
+	reg_val |= (1 << ICFG_SDIO0_CAP0__SLOT_TYPE_R);
+	reg_val |= (0 << ICFG_SDIO0_CAP0__INT_MODE_R);
+	reg_val |= (0 << ICFG_SDIO0_CAP0__SYS_BUS_64BIT_R);
+	reg_val |= (1 << ICFG_SDIO0_CAP0__VOLTAGE_1P8V_R);
+	reg_val |= (1 << ICFG_SDIO0_CAP0__VOLTAGE_3P0V_R);
+	reg_val |= (1 << ICFG_SDIO0_CAP0__VOLTAGE_3P3V_R);
+	reg_val |= (1 << ICFG_SDIO0_CAP0__SUSPEND_RESUME_R);
+	reg_val |= (1 << ICFG_SDIO0_CAP0__SDMA_R);
+	reg_val |= (1 << ICFG_SDIO0_CAP0__HIGH_SPEED_R);
+	reg_val |= (1 << ICFG_SDIO0_CAP0__ADMA2_R);
+	reg_val |= (1 << ICFG_SDIO0_CAP0__EXTENDED_MEDIA_R);
+	reg_val |= (2 << ICFG_SDIO0_CAP0__MAX_BLOCK_LEN_R);
+	reg_val |= (0xd0 << ICFG_SDIO0_CAP0__BASE_CLK_FREQ_R);
+	reg_val |= (1 << ICFG_SDIO0_CAP0__TIMEOUT_UNIT_R);
+	reg_val |= (0x30 << ICFG_SDIO0_CAP0__TIMEOUT_CLK_FREQ_R);
+
+	mmio_write_32(ICFG_SDIO0_CAP0, reg_val);
+
+	reg_val = 0;
+	reg_val |= (1 << ICFG_SDIO0_CAP1__SPI_BLOCK_MODE_R);
+	reg_val |= (1 << ICFG_SDIO0_CAP1__SPI_MODE_R);
+	reg_val |= (0 << ICFG_SDIO0_CAP1__CLK_MULT_R);
+	reg_val |= (0 << ICFG_SDIO0_CAP1__RETUNING_MODE_R);
+	reg_val |= (1 << ICFG_SDIO0_CAP1__TUNE_SDR50_R);
+	reg_val |= (1 << ICFG_SDIO0_CAP1__TIME_RETUNE_R);
+	reg_val |= (1 << ICFG_SDIO0_CAP1__DRIVER_D_R);
+	reg_val |= (1 << ICFG_SDIO0_CAP1__DRIVER_C_R);
+	reg_val |= (1 << ICFG_SDIO0_CAP1__DRIVER_A_R);
+	reg_val |= (1 << ICFG_SDIO0_CAP1__DDR50_R);
+	reg_val |= (1 << ICFG_SDIO0_CAP1__SDR104_R);
+	reg_val |= (1 << ICFG_SDIO0_CAP1__SDR50_R);
+
+	mmio_write_32(ICFG_SDIO0_CAP1, reg_val);
+
+	/* Reset the SDIO controller */
+	chal_sd_stop();
+
+	/* Turn on SD clock */
+	chal_sd_set_clock(sd_handle,
+			  chal_sd_freq_2_div_ctrl_setting(INIT_CLK_FREQ), 1);
+
+	/* program data time out value to the max */
+	timeout_val = SD_HOST_CORE_TIMEOUT;
+
+	ctl_val = mmio_read_32(handle->ctrl.sdRegBaseAddr +
+			       SD4_EMMC_TOP_CTRL1_OFFSET);
+	ctl_val |= ((timeout_val & 0xf) << SD4_EMMC_TOP_CTRL1_DTCNT_SHIFT);
+
+	mmio_write_32(handle->ctrl.sdRegBaseAddr + SD4_EMMC_TOP_CTRL1_OFFSET,
+		      ctl_val);
+
+	/* enable all interrupt status */
+	mmio_write_32(handle->ctrl.sdRegBaseAddr + SD4_EMMC_TOP_INTREN1_OFFSET,
+		      0);
+	mmio_write_32(handle->ctrl.sdRegBaseAddr + SD4_EMMC_TOP_INTREN2_OFFSET,
+		      0);
+
+	SD_US_DELAY(100);
+
+	mmio_write_32(handle->ctrl.sdRegBaseAddr + SD4_EMMC_TOP_INTREN1_OFFSET,
+		      SD_NOR_INTERRUPTS | SD_ERR_INTERRUPTS);
+	mmio_write_32(handle->ctrl.sdRegBaseAddr + SD4_EMMC_TOP_INTREN2_OFFSET,
+		      SD_NOR_INTERRUPTS | SD_ERR_INTERRUPTS);
+
+	/* Select SD bus voltage */
+	cap_val_l = mmio_read_32(handle->ctrl.sdRegBaseAddr +
+				 SD4_EMMC_TOP_CAPABILITIES1_OFFSET);
+	handle->cfg.voltage = 0;
+	voltage = 0x7;
+
+	if (cap_val_l & SD4_EMMC_TOP_CAPABILITIES1_V33_MASK) {
+		handle->cfg.voltage |= SD_VDD_WINDOW_3_3_TO_3_4;
+		voltage = 0x7;
+	} else if (cap_val_l & SD4_EMMC_TOP_CAPABILITIES1_V3_MASK) {
+		handle->cfg.voltage |= SD_VDD_WINDOW_3_0_TO_3_1;
+		voltage = 0x6;
+	} else if (cap_val_l & SD4_EMMC_TOP_CAPABILITIES1_V18_MASK) {
+		handle->cfg.voltage |= SD_VDD_WINDOW_1_8_TO_1_9;
+		voltage = 0x5;
+	}
+
+	rval = chal_sd_set_power(handle, voltage, SD4_EMMC_TOP_CTRL_SDPWR_MASK);
+
+	ctl_val = mmio_read_32(handle->ctrl.sdRegBaseAddr +
+			       SD4_EMMC_TOP_HCVERSIRQ_OFFSET);
+	handle->ctrl.version = ((ctl_val >> 16) & 0xFF);
+
+	return rval;
+}
+
+void chal_sd_set_speed(CHAL_HANDLE *sd_handle, uint32_t speed)
+{
+	struct sd_dev *handle;
+
+	if (sd_handle == NULL)
+		return;
+
+	handle = (struct sd_dev *) sd_handle;
+
+	if (speed) {
+		EMMC_TRACE("enable HighSpeed\n");
+		mmio_setbits_32(handle->ctrl.sdRegBaseAddr +
+				SD4_EMMC_TOP_CTRL_OFFSET,
+				SD4_EMMC_TOP_CTRL_HSEN_MASK);
+	} else {
+		EMMC_TRACE("disable HighSpeed\n");
+		mmio_clrbits_32(handle->ctrl.sdRegBaseAddr +
+				SD4_EMMC_TOP_CTRL_OFFSET,
+				SD4_EMMC_TOP_CTRL_HSEN_MASK);
+	}
+}
+
+int32_t chal_sd_stop(void)
+{
+	uintptr_t idm_rst_ctrl_addr = EMMC_IDM_RESET_CTRL_ADDR;
+
+	/* Configure IO pins */
+	emmc_soft_reset();
+
+	/* Reset the SDIO controller */
+	mmio_write_32(idm_rst_ctrl_addr, 1);
+	SD_US_DELAY(100);
+	mmio_write_32(idm_rst_ctrl_addr, 0);
+	SD_US_DELAY(100);
+
+	return SD_OK;
+}
+
+/*
+ * Check if host supports specified capability
+ * returns -ve val on error, 0 if capability not supported else 1.
+ */
+int32_t chal_sd_check_cap(CHAL_HANDLE *sd_handle, uint32_t caps)
+{
+	struct sd_dev *handle;
+
+	if (sd_handle == NULL)
+		return SD_INVALID_HANDLE;
+
+	handle = (struct sd_dev *) sd_handle;
+
+	if (caps & mmio_read_32(handle->ctrl.sdRegBaseAddr +
+				SD4_EMMC_TOP_CAPABILITIES1_OFFSET))
+		return 1;
+	else
+		return 0;
+}
+
+int32_t chal_sd_start(CHAL_HANDLE *sd_handle,
+		      uint32_t mode, uint32_t sd_base, uint32_t host_base)
+{
+
+	struct sd_dev *handle;
+	int32_t rval = SD_FAIL;
+
+	if (sd_handle == NULL)
+		return SD_INVALID_HANDLE;
+
+	handle = (struct sd_dev *) sd_handle;
+
+	handle->cfg.mode = SD_PIO_MODE;	/* set to PIO mode first for init */
+	handle->cfg.dma = SD_DMA_OFF;
+
+	chal_sd_setup_handler(handle, sd_base, host_base);
+
+	/* init and start hw */
+	rval = chal_sd_init(sd_handle);
+	if (rval != SD_OK)
+		return rval;
+
+	chal_sd_clear_pending_irq(sd_handle);
+
+	handle->ctrl.eventList = 0;
+	handle->cfg.mode = mode;
+
+	return SD_OK;
+}
+
+/*
+ * Function to check 8bits of err generated from auto CMD12
+ */
+int32_t chal_sd_get_atuo12_error(CHAL_HANDLE *sd_handle)
+{
+	struct sd_dev *handle;
+
+	if (sd_handle == NULL)
+		return SD_INVALID_HANDLE;
+
+	handle = (struct sd_dev *) sd_handle;
+
+	return (mmio_read_32(handle->ctrl.sdRegBaseAddr +
+			     SD4_EMMC_TOP_ERRSTAT_OFFSET) & 0xFF);
+}
+
+/*
+ * Read present state register
+ */
+uint32_t chal_sd_get_present_status(CHAL_HANDLE *sd_handle)
+{
+	struct sd_dev *handle;
+
+	if (sd_handle == NULL)
+		return SD_INVALID_HANDLE;
+
+	handle = (struct sd_dev *) sd_handle;
+
+	return mmio_read_32(handle->ctrl.sdRegBaseAddr +
+			    SD4_EMMC_TOP_PSTATE_OFFSET);
+}
+
+/*
+ * Set SD bus width
+ */
+int32_t chal_sd_config_bus_width(CHAL_HANDLE *sd_handle, int32_t width)
+{
+	uint32_t ctl_val;
+	struct sd_dev *handle;
+
+	if (sd_handle == NULL)
+		return SD_INVALID_HANDLE;
+
+	handle = (struct sd_dev *)sd_handle;
+
+	ctl_val = mmio_read_32(handle->ctrl.sdRegBaseAddr +
+			       SD4_EMMC_TOP_CTRL_OFFSET);
+
+	switch (width) {
+#ifdef DRIVER_EMMC_ENABLE_DATA_WIDTH_8BIT
+	case SD_BUS_DATA_WIDTH_8BIT:
+		ctl_val &= ~SD_BUS_DATA_WIDTH_4BIT;
+		ctl_val |= SD_BUS_DATA_WIDTH_8BIT;
+		break;
+#endif
+	case SD_BUS_DATA_WIDTH_4BIT:
+		ctl_val &= ~SD_BUS_DATA_WIDTH_8BIT;
+		ctl_val |= SD_BUS_DATA_WIDTH_4BIT;
+		break;
+	case SD_BUS_DATA_WIDTH_1BIT:
+		ctl_val &= ~(SD_BUS_DATA_WIDTH_4BIT | SD_BUS_DATA_WIDTH_8BIT);
+		break;
+	default:
+		return SD_INV_DATA_WIDTH;
+	};
+
+	mmio_write_32(handle->ctrl.sdRegBaseAddr + SD4_EMMC_TOP_CTRL_OFFSET,
+		      ctl_val);
+
+	return SD_OK;
+}
+
+/*
+ * Function to enable or disable DMA control.
+ */
+int32_t chal_sd_set_dma(CHAL_HANDLE *sd_handle, uint32_t mode)
+{
+	uint32_t val;
+	struct sd_dev *handle;
+	int32_t rc;
+
+	if (sd_handle == NULL)
+		return SD_INVALID_HANDLE;
+
+	handle = (struct sd_dev *)sd_handle;
+
+	if (mode) {
+		rc = chal_sd_check_cap(sd_handle,
+				       SD4_EMMC_TOP_CAPABILITIES1_SDMA_MASK |
+				       SD4_EMMC_TOP_CAPABILITIES1_ADMA2_MASK);
+		if (rc < 0)
+			return rc;
+
+		if (rc) {
+
+			handle->cfg.dma = mode;
+			val = mmio_read_32(handle->ctrl.sdRegBaseAddr +
+					   SD4_EMMC_TOP_CTRL_OFFSET);
+			val &= ~(SD4_EMMC_TOP_CTRL_DMASEL_MASK);
+			val |= handle->cfg.dma - 1;
+			mmio_write_32(handle->ctrl.sdRegBaseAddr +
+				      SD4_EMMC_TOP_CTRL_OFFSET, val);
+			return SD_OK;
+		}
+	}
+	handle->cfg.dma = 0;
+
+	return SD_FAIL;
+}
+
+/*
+ * Get current DMA address.
+ * Called only when there is no data transaction activity.
+ */
+uintptr_t chal_sd_get_dma_addr(CHAL_HANDLE *sd_handle)
+{
+	struct sd_dev *handle;
+
+	if (sd_handle == NULL)
+		return SD_INVALID_HANDLE;
+
+	handle = (struct sd_dev *) sd_handle;
+
+	if (handle->cfg.dma == SD_DMA_OFF)
+		return 0;
+
+	return (uintptr_t)mmio_read_32(handle->ctrl.sdRegBaseAddr +
+				       SD4_EMMC_TOP_SYSADDR_OFFSET);
+}
+
+int32_t chal_sd_send_cmd(CHAL_HANDLE *sd_handle, uint32_t cmd_idx,
+			 uint32_t argument, uint32_t options)
+{
+	uint32_t cmd_mode_reg = 0;
+	struct sd_dev *handle;
+
+	if (sd_handle == NULL)
+		return SD_INVALID_HANDLE;
+
+	handle = (struct sd_dev *) sd_handle;
+
+	EMMC_TRACE("%s %d cmd:%d argReg:%x options:%x\n",
+		   __func__, __LINE__, cmd_idx, argument, options);
+
+	/* Configure the value for command and mode registers */
+	cmd_mode_reg = (cmd_idx << 24) | options;
+
+	/*
+	 * 1. Write block size reg & block count reg,
+	 * this is done in the tx or rx setup
+	 */
+	mmio_write_32(handle->ctrl.sdRegBaseAddr + SD4_EMMC_TOP_BLOCK_OFFSET,
+		      handle->ctrl.blkReg);
+
+	/* 2. Write argument reg */
+	mmio_write_32(handle->ctrl.sdRegBaseAddr + SD4_EMMC_TOP_ARG_OFFSET,
+		      argument);
+	handle->ctrl.argReg = argument;
+
+	/*
+	 * 3. Write transfer mode reg & command reg, check the DMA bit which is
+	 *    set before this function call if it is selected.
+	 */
+	if (cmd_idx == 24 || cmd_idx == 25 || cmd_idx == 18 || cmd_idx == 17 ||
+	    cmd_idx == 42 || cmd_idx == 51 || cmd_idx == 53)
+		cmd_mode_reg |= ((handle->cfg.dma) ? 1 : 0);
+
+	mmio_write_32(handle->ctrl.sdRegBaseAddr + SD4_EMMC_TOP_CMD_OFFSET,
+		      cmd_mode_reg);
+
+	handle->ctrl.cmdIndex = cmd_idx;
+
+	return SD_OK;
+}
+
+int32_t chal_sd_set_dma_addr(CHAL_HANDLE *sd_handle, uintptr_t address)
+{
+	struct sd_dev *handle;
+
+	if (sd_handle == NULL)
+		return SD_INVALID_HANDLE;
+
+	handle = (struct sd_dev *) sd_handle;
+
+	if (handle->cfg.dma == SD_DMA_OFF)
+		return SD_FAIL;
+
+	mmio_write_32(handle->ctrl.sdRegBaseAddr + SD4_EMMC_TOP_SYSADDR_OFFSET,
+		      address);
+	return SD_OK;
+}
+
+uint32_t chal_sd_freq_2_div_ctrl_setting(uint32_t desired_freq)
+{
+	/*
+	 * Divider control setting represents 1/2 of the actual divider value.
+	 *
+	 * DesiredFreq = BaseClockFreq / (2 * div_ctrl_setting)
+	 *
+	 * ==> div_ctrl_setting = BaseClockFreq / (2 * DesiredFreq)
+	 */
+	uint32_t div_ctrl_setting;
+	uint32_t actual_freq;
+
+	assert(desired_freq != 0);
+
+	/* Special case, 0 = divider of 1. */
+	if (desired_freq >= BASE_CLK_FREQ)
+		return 0;
+
+	/* Normal case, desired_freq < BASE_CLK_FREQ */
+	div_ctrl_setting = BASE_CLK_FREQ / (2 * desired_freq);
+
+	actual_freq = BASE_CLK_FREQ / (2 * div_ctrl_setting);
+
+	if (actual_freq > desired_freq) {
+		/*
+		 * Division does not result in exact freqency match.
+		 * Make sure resulting frequency does not exceed requested freq.
+		 */
+		div_ctrl_setting++;
+	}
+
+	return div_ctrl_setting;
+}
+
+int32_t chal_sd_set_clock(CHAL_HANDLE *sd_handle, uint32_t div_ctrl_setting,
+			  uint32_t on)
+{
+	uint32_t value;
+	struct sd_dev *handle;
+	uint32_t time;
+	uint32_t clk_sel_high_byte = 0xFF & (div_ctrl_setting >> 8);
+	uint32_t clk_sel_low_byte = 0xFF & div_ctrl_setting;
+
+	if (sd_handle == NULL)
+		return SD_INVALID_HANDLE;
+
+	EMMC_TRACE("set_clock(div_ctrl_setting=%d,on=%d)\n",
+		   div_ctrl_setting, on);
+
+	handle = (struct sd_dev *) sd_handle;
+
+	/* Read control register content. */
+	value = mmio_read_32(handle->ctrl.sdRegBaseAddr +
+			     SD4_EMMC_TOP_CTRL1_OFFSET);
+
+	/* Disable Clock */
+	value &= ~(SD4_EMMC_TOP_CTRL1_SDCLKEN_MASK);
+
+	mmio_write_32(handle->ctrl.sdRegBaseAddr + SD4_EMMC_TOP_CTRL1_OFFSET,
+		      value);
+
+	/* Clear bits of interest. */
+	value &= ~(SD4_EMMC_TOP_CTRL1_SDCLKSEL_MASK |
+		   SD4_EMMC_TOP_CTRL1_SDCLKSEL_UP_MASK);
+
+	/* Set bits of interest to new value. */
+	value |= (SD4_EMMC_TOP_CTRL1_SDCLKSEL_MASK &
+		  (clk_sel_low_byte << SD4_EMMC_TOP_CTRL1_SDCLKSEL_SHIFT));
+	value |= (SD4_EMMC_TOP_CTRL1_SDCLKSEL_UP_MASK &
+		  (clk_sel_high_byte << SD4_EMMC_TOP_CTRL1_SDCLKSEL_UP_SHIFT));
+	value |= SD4_EMMC_TOP_CTRL1_ICLKEN_MASK;
+
+	/* Write updated value back to control register. */
+	mmio_write_32(handle->ctrl.sdRegBaseAddr + SD4_EMMC_TOP_CTRL1_OFFSET,
+		      value);
+
+	time = 0;
+	do {
+		value = mmio_read_32(handle->ctrl.sdRegBaseAddr +
+				     SD4_EMMC_TOP_CTRL1_OFFSET);
+
+		if ((value & SD4_EMMC_TOP_CTRL1_ICLKSTB_MASK) ==
+				SD4_EMMC_TOP_CTRL1_ICLKSTB_MASK)
+			break;
+
+		mdelay(1);
+	} while (time++ < EMMC_CLOCK_SETTING_TIMEOUT_MS);
+
+	if (time >= EMMC_CLOCK_SETTING_TIMEOUT_MS)
+		WARN("%s %d clock settings timeout happenedi (%dms)\n",
+			 __func__, __LINE__, time);
+
+	VERBOSE("EMMC: clock settings delay: %dms\n", time);
+
+	value = mmio_read_32(handle->ctrl.sdRegBaseAddr +
+			     SD4_EMMC_TOP_CTRL1_OFFSET);
+
+	if (on)
+		value |= SD4_EMMC_TOP_CTRL1_SDCLKEN_MASK;
+
+	mmio_write_32(handle->ctrl.sdRegBaseAddr + SD4_EMMC_TOP_CTRL1_OFFSET,
+		      value);
+
+	return SD_OK;
+}
+
+/*
+ * function to setup DMA buffer and data length, calculates block
+ * size and the number of blocks to be transferred and return
+ * the DMA buffer address.
+ */
+int32_t chal_sd_setup_xfer(CHAL_HANDLE *sd_handle,
+			   uint8_t *data, uint32_t length, int32_t dir)
+{
+	uint32_t blocks = 0;
+	struct sd_dev *handle;
+
+	if (sd_handle == NULL)
+		return SD_INVALID_HANDLE;
+
+	handle = (struct sd_dev *) sd_handle;
+
+	if (length <= handle->cfg.blockSize) {
+		handle->ctrl.blkReg = length | handle->cfg.dmaBoundary;
+	} else {
+		blocks = length / handle->cfg.blockSize;
+		handle->ctrl.blkReg = (blocks << 16) | handle->cfg.blockSize |
+					handle->cfg.dmaBoundary;
+	}
+
+	if (handle->cfg.dma != SD_DMA_OFF) {
+		/* For DMA target address setting, physical address should be used */
+		mmio_write_32(handle->ctrl.sdRegBaseAddr + SD4_EMMC_TOP_SYSADDR_OFFSET,
+				(uintptr_t)data);
+	}
+
+	return SD_OK;
+}
+
+#ifdef INCLUDE_EMMC_DRIVER_WRITE_CODE
+/*
+ * function to write one block data directly to the
+ * host controller's FIFO which is 1K uint8_t or
+ * 2K uint8_t in size.
+ * It is used in Non-DMA mode for data transmission.
+ */
+int32_t chal_sd_write_buffer(CHAL_HANDLE *sd_handle, uint32_t length,
+			     uint8_t *data)
+{
+	uint32_t i, leftOver = 0, blockSize, size, value = 0;
+	struct sd_dev *handle;
+
+	if (sd_handle == NULL)
+		return SD_INVALID_HANDLE;
+
+	handle = (struct sd_dev *) sd_handle;
+
+	blockSize = handle->cfg.blockSize;
+
+	if (length == 0)
+		return SD_OK;
+
+	/* PIO mode, push into fifo word by word */
+	if (length >= blockSize) {
+		size = blockSize;
+	} else {
+		size = ((length >> 2) << 2);
+		leftOver = length % 4;
+	}
+
+	for (i = 0; i < size; i += 4) {
+		value = *(uint32_t *)(data + i);
+		mmio_write_32(handle->ctrl.sdRegBaseAddr +
+			      SD4_EMMC_TOP_BUFDAT_OFFSET, value);
+	}
+/*
+ * BUG ALERT:
+ *    This implementation has TWO issues that must be addressed before you
+ *    can safely INCLUDE_EMMC_DRIVER_WRITE_CODE.
+ *
+ *    (1) For the last leftOver bytes, driver writes full word, which means
+ *        some of the eMMC content (i.e. "4 - leftOver" will be erroneously
+ *        overwritten).
+ *    (2) eMMC is a block device. What happens when less than a full block of
+ *        data is submitted???
+ */
+	if (leftOver > 0) {
+		value = ((*(uint32_t *)(data + i)) << (4 - leftOver));
+		mmio_write_32(handle->ctrl.sdRegBaseAddr +
+			      SD4_EMMC_TOP_BUFDAT_OFFSET, value);
+	}
+
+	return SD_OK;
+}
+#endif /* INCLUDE_EMMC_DRIVER_WRITE_CODE */
+
+/*
+ * Function to read maximal one block data directly
+ * from the data port of the host controller (FIFO). It is used
+ * in Non-DMA mode for data transmission.
+ */
+int32_t chal_sd_read_buffer(CHAL_HANDLE *sd_handle, uint32_t length,
+			    uint8_t *data)
+{
+	uint32_t i, size, leftOver, blockSize, value;
+	struct sd_dev *handle;
+
+	if (sd_handle == NULL)
+		return SD_INVALID_HANDLE;
+
+	handle = (struct sd_dev *)sd_handle;
+
+	value = 0;
+
+	blockSize = handle->cfg.blockSize;
+
+	/* PIO mode, extract fifo word by word */
+	if (length >= blockSize) {
+		size = blockSize;
+		leftOver = 0;
+	} else {
+		leftOver = length % 4;
+		size = ((length >> 2) << 2);
+	}
+
+	for (i = 0; i < size; i += 4) {
+		value =
+		    mmio_read_32(handle->ctrl.sdRegBaseAddr +
+				    SD4_EMMC_TOP_BUFDAT_OFFSET);
+		memcpy((void *)(data + i), &value, sizeof(uint32_t));
+	}
+
+	if (leftOver > 0) {
+		value = mmio_read_32(handle->ctrl.sdRegBaseAddr +
+				     SD4_EMMC_TOP_BUFDAT_OFFSET);
+
+		/*
+		 * Copy remaining non-full word bytes.
+		 * (We run ARM as Little Endian)
+		 */
+		uint8_t j = 0;
+
+		for (j = 0; j < leftOver; j++) {
+			data[i + j] = (value >> (j * 8)) & 0xFF;
+		}
+	}
+
+	return SD_OK;
+}
+
+/*
+ * Resets both DAT or CMD line.
+ */
+int32_t chal_sd_reset_line(CHAL_HANDLE *sd_handle, uint32_t line)
+{
+	uint32_t control, flag;
+	struct sd_dev *handle;
+
+	if (sd_handle == NULL)
+		return SD_INVALID_HANDLE;
+
+	handle = (struct sd_dev *) sd_handle;
+
+	flag = SD4_EMMC_TOP_CTRL1_CMDRST_MASK | SD4_EMMC_TOP_CTRL1_DATRST_MASK;
+
+	if (flag != (line | flag))
+		return SD_FAIL;
+
+	control = mmio_read_32(handle->ctrl.sdRegBaseAddr +
+			       SD4_EMMC_TOP_CTRL1_OFFSET);
+	control |= line;
+	mmio_write_32(handle->ctrl.sdRegBaseAddr + SD4_EMMC_TOP_CTRL1_OFFSET,
+		      control);
+
+	/* reset CMD and DATA line should always work, no need to timed out */
+	do {
+		control = mmio_read_32(handle->ctrl.sdRegBaseAddr +
+				       SD4_EMMC_TOP_CTRL1_OFFSET);
+	} while (control & line);
+
+	return SD_OK;
+}
+
+/*
+ * Function to be called once a SD command is done to read
+ * back it's response data.
+ */
+int32_t chal_sd_get_response(CHAL_HANDLE *sd_handle, uint32_t *resp)
+{
+	struct sd_dev *handle;
+
+	if (sd_handle == NULL)
+		return SD_INVALID_HANDLE;
+
+	handle = (struct sd_dev *) sd_handle;
+	resp[0] = mmio_read_32(handle->ctrl.sdRegBaseAddr +
+			       SD4_EMMC_TOP_RESP0_OFFSET);
+	resp[1] = mmio_read_32(handle->ctrl.sdRegBaseAddr +
+			       SD4_EMMC_TOP_RESP2_OFFSET);
+	resp[2] = mmio_read_32(handle->ctrl.sdRegBaseAddr +
+			       SD4_EMMC_TOP_RESP4_OFFSET);
+	resp[3] = mmio_read_32(handle->ctrl.sdRegBaseAddr +
+			       SD4_EMMC_TOP_RESP6_OFFSET);
+
+	return SD_OK;
+}
+
+/*
+ * The function is called to clean all the pending interrupts.
+ */
+int32_t chal_sd_clear_pending_irq(CHAL_HANDLE *sd_handle)
+{
+	uint32_t status = SD_OK;
+	struct sd_dev *handle;
+
+	if (sd_handle == NULL)
+		return SD_INVALID_HANDLE;
+
+	handle = (struct sd_dev *)sd_handle;
+
+	/* Make sure clean all interrupts */
+	do {
+		mmio_write_32(handle->ctrl.sdRegBaseAddr +
+			      SD4_EMMC_TOP_INTR_OFFSET, 0xFFFFFFFF);
+		SD_US_DELAY(10);
+	} while (mmio_read_32(handle->ctrl.sdRegBaseAddr +
+			      SD4_EMMC_TOP_INTR_OFFSET));
+
+	return status;
+}
+
+/*
+ * The function returns interrupt status register value.
+ */
+int32_t chal_sd_get_irq_status(CHAL_HANDLE *sd_handle)
+{
+	struct sd_dev *handle;
+
+	if (sd_handle == NULL)
+		return SD_INVALID_HANDLE;
+
+	handle = (struct sd_dev *) sd_handle;
+
+	return (mmio_read_32(handle->ctrl.sdRegBaseAddr +
+			     SD4_EMMC_TOP_INTR_OFFSET));
+}
+
+/*
+ * The function clears interrupt(s) specified in the mask.
+ */
+int32_t chal_sd_clear_irq(CHAL_HANDLE *sd_handle, uint32_t mask)
+{
+	struct sd_dev *handle;
+
+	if (sd_handle == NULL)
+		return SD_INVALID_HANDLE;
+
+	handle = (struct sd_dev *) sd_handle;
+
+	/* Make sure clean masked interrupts */
+	do {
+		mmio_write_32(handle->ctrl.sdRegBaseAddr +
+			      SD4_EMMC_TOP_INTR_OFFSET, mask);
+		SD_US_DELAY(10);
+	} while (mask &
+		 mmio_read_32(handle->ctrl.sdRegBaseAddr +
+			      SD4_EMMC_TOP_INTR_OFFSET));
+
+	return SD_OK;
+}
+
+/*
+ * Description: The function configures the SD host controller.
+ */
+int32_t chal_sd_config(CHAL_HANDLE *sd_handle, uint32_t speed, uint32_t retry,
+		       uint32_t boundary, uint32_t blkSize, uint32_t dma)
+{
+	struct sd_dev *handle;
+
+	if (sd_handle == NULL)
+		return SD_INVALID_HANDLE;
+
+	handle = (struct sd_dev *) sd_handle;
+
+	handle->cfg.speedMode = speed;
+	handle->cfg.retryLimit = retry;
+	handle->cfg.dmaBoundary = boundary;
+	handle->cfg.blockSize = blkSize;
+
+	chal_sd_set_dma(sd_handle, dma);
+	SD_US_DELAY(100);
+	chal_sd_set_dma_boundary(handle, boundary);
+	SD_US_DELAY(100);
+
+	chal_sd_set_speed(sd_handle, speed);
+
+	SD_US_DELAY(100);
+	return SD_OK;
+}
+
+/*
+ * Cleans up HC FIFO.
+ */
+void chal_sd_dump_fifo(CHAL_HANDLE *sd_handle)
+{
+	struct sd_dev *handle;
+
+	if (sd_handle == NULL)
+		return;
+
+	handle = (struct sd_dev *)sd_handle;
+
+	/* in case there still data in the host buffer */
+	while (mmio_read_32(handle->ctrl.sdRegBaseAddr +
+			    SD4_EMMC_TOP_PSTATE_OFFSET) & 0x800) {
+		mmio_read_32(handle->ctrl.sdRegBaseAddr +
+			     SD4_EMMC_TOP_BUFDAT_OFFSET);
+	};
+}
+
+/*
+ * Enable or disable a SD interrupt signal.
+ */
+void chal_sd_set_irq_signal(CHAL_HANDLE *sd_handle, uint32_t mask,
+			    uint32_t state)
+{
+	struct sd_dev *handle;
+
+	if (sd_handle == NULL)
+		return;
+
+	handle = (struct sd_dev *)sd_handle;
+
+	if (state)
+		mmio_setbits_32(handle->ctrl.sdRegBaseAddr +
+				SD4_EMMC_TOP_INTREN2_OFFSET, mask);
+	else
+		mmio_clrbits_32(handle->ctrl.sdRegBaseAddr +
+				SD4_EMMC_TOP_INTREN2_OFFSET, mask);
+}
diff --git a/drivers/brcm/emmc/emmc_csl_sdcard.c b/drivers/brcm/emmc/emmc_csl_sdcard.c
new file mode 100644
index 0000000..d6ad4bc
--- /dev/null
+++ b/drivers/brcm/emmc/emmc_csl_sdcard.c
@@ -0,0 +1,1087 @@
+/*
+ * Copyright (c) 2016 - 2020, Broadcom
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <stdlib.h>
+#include <string.h>
+#include <stddef.h>
+
+#include <arch_helpers.h>
+#include <lib/mmio.h>
+
+#include "bcm_emmc.h"
+#include "emmc_chal_types.h"
+#include "emmc_csl_sdprot.h"
+#include "emmc_chal_sd.h"
+#include "emmc_csl_sdcmd.h"
+#include "emmc_csl_sd.h"
+#include "emmc_pboot_hal_memory_drv.h"
+
+#define SD_CARD_BUSY                    0x80000000
+#define SD_CARD_RETRY_LIMIT             1000
+#define SD_CARD_HIGH_SPEED_PS           13
+#define SD_CHK_HIGH_SPEED_MODE          0x00FFFFF1
+#define SD_SET_HIGH_SPEED_MODE          0x80FFFFF1
+#define SD_MMC_ENABLE_HIGH_SPEED        0x03b90100	//0x03b90103
+#define SD_MMC_8BIT_MODE                0x03b70200
+#define SD_MMC_4BIT_MODE                0x03b70100
+#define SD_MMC_1BIT_MODE                0x03b70000
+
+#define SD_MMC_BOOT_8BIT_MODE           0x03b10200
+#define SD_MMC_BOOT_4BIT_MODE           0x03b10100
+#define SD_MMC_BOOT_1BIT_MODE           0x03b10000
+#define SDIO_HW_EMMC_EXT_CSD_BOOT_CNF   0X03B30000
+
+#ifdef USE_EMMC_FIP_TOC_CACHE
+/*
+ * Cache size mirrors the size of the global eMMC temp buffer
+ * which is used for non-image body reads such as headers, ToC etc.
+ */
+#define CACHE_SIZE           ((EMMC_BLOCK_SIZE) * 2)
+#define PARTITION_BLOCK_ADDR ((PLAT_FIP_ATTEMPT_OFFSET)/(EMMC_BLOCK_SIZE))
+
+static uint32_t cached_partition_block;
+static uint8_t cached_block[CACHE_SIZE];
+#endif
+
+static int set_card_data_width(struct sd_handle *handle, int width);
+static int abort_err(struct sd_handle *handle);
+static int err_recovery(struct sd_handle *handle, uint32_t errors);
+static int xfer_data(struct sd_handle *handle, uint32_t mode, uint32_t addr,
+		     uint32_t length, uint8_t *base);
+
+int set_boot_config(struct sd_handle *handle, uint32_t config)
+{
+	return mmc_cmd6(handle, SDIO_HW_EMMC_EXT_CSD_BOOT_CNF | config);
+}
+
+void process_csd_mmc_speed(struct sd_handle *handle, uint32_t csd_mmc_speed)
+{
+	uint32_t div_ctrl_setting;
+
+	/* CSD field TRAN_SPEED:
+	 * Bits [2:0] 0 = 100 KHz
+	 *            1 = 1 MHz
+	 *            2 = 10 MHz
+	 *            3 = 100 MHz
+	 *            4...7 Reserved.
+	 * Bits [6:3] 0 = Reserved
+	 *            1 = 1.0
+	 *            2 = 1.2
+	 *            3 = 1.3
+	 *            4 = 1.5
+	 *            5 = 2.0
+	 *            6 = 2.6
+	 *            7 = 3.0
+	 *            8 = 3.5
+	 *            9 = 4.0
+	 *            A = 4.5
+	 *            B = 5.2
+	 *            C = 5.5
+	 *            D = 6.0
+	 *            E = 7.0
+	 *            F = 8.0
+	 * For cards supporting version 4.0, 4.1, and 4.2 of the standard,
+	 * the value shall be 20 MHz (0x2A).
+	 * For cards supporting version 4.3 , the value shall be 26 MHz (0x32)
+	 */
+
+	switch (csd_mmc_speed & 0x7F) {
+	case 0x2A:
+		EMMC_TRACE("Speeding up eMMC clock to 20MHz\n");
+		div_ctrl_setting =
+		    chal_sd_freq_2_div_ctrl_setting(20 * 1000 * 1000);
+		break;
+	case 0x32:
+		EMMC_TRACE("Speeding up eMMC clock to 26MHz\n");
+		div_ctrl_setting =
+		    chal_sd_freq_2_div_ctrl_setting(26 * 1000 * 1000);
+		break;
+	default:
+		/* Unknown */
+		return;
+	}
+
+	chal_sd_set_clock((CHAL_HANDLE *) handle->device, div_ctrl_setting, 0);
+
+	chal_sd_set_clock((CHAL_HANDLE *) handle->device, div_ctrl_setting, 1);
+
+	SD_US_DELAY(1000);
+}
+
+
+/*
+ * The function changes SD/SDIO/MMC card data width if
+ * the card support configurable data width. The host controller
+ * and the card has to be in the same bus data width.
+ */
+int set_card_data_width(struct sd_handle *handle, int width)
+{
+	uint32_t data_width = 0;
+	int is_valid_arg = 1;
+	int rc = SD_FAIL;
+	char *bitwidth_str = " ";
+	char *result_str = "failed";
+
+	switch (width) {
+#ifdef DRIVER_EMMC_ENABLE_DATA_WIDTH_8BIT
+	case SD_BUS_DATA_WIDTH_8BIT:
+		data_width = SD_MMC_8BIT_MODE;
+#if LOG_LEVEL >= LOG_LEVEL_VERBOSE
+		bitwidth_str = "8_BIT";
+#endif
+		break;
+#endif
+	case SD_BUS_DATA_WIDTH_4BIT:
+		data_width = SD_MMC_4BIT_MODE;
+#if LOG_LEVEL >= LOG_LEVEL_VERBOSE
+		bitwidth_str = "4_BIT";
+#endif
+		break;
+
+	case SD_BUS_DATA_WIDTH_1BIT:
+		data_width = SD_MMC_1BIT_MODE;
+#if LOG_LEVEL >= LOG_LEVEL_VERBOSE
+		bitwidth_str = "1_BIT";
+#endif
+		break;
+
+	default:
+		is_valid_arg = 0;
+#if LOG_LEVEL >= LOG_LEVEL_VERBOSE
+		bitwidth_str = "unknown";
+#endif
+		break;
+	}
+
+	if (is_valid_arg) {
+		rc = mmc_cmd6(handle, data_width);
+		if (rc == SD_OK) {
+#if LOG_LEVEL >= LOG_LEVEL_VERBOSE
+			result_str = "succeeded";
+#endif
+			chal_sd_config_bus_width((CHAL_HANDLE *) handle->device,
+						 width);
+		} else {
+#if LOG_LEVEL >= LOG_LEVEL_VERBOSE
+			result_str = "failed";
+#endif
+		}
+	} else {
+		rc = SD_FAIL;
+#if LOG_LEVEL >= LOG_LEVEL_VERBOSE
+		result_str = "ignored";
+#endif
+	}
+
+	VERBOSE("SDIO Data Width(%s) %s.\n", bitwidth_str, result_str);
+
+	return rc;
+}
+
+
+/*
+ * Error handling routine. Does abort data
+ * transmission if error is found.
+ */
+static int abort_err(struct sd_handle *handle)
+{
+	uint32_t present, options, event, rel = 0;
+	struct sd_resp cmdRsp;
+
+	handle->device->ctrl.argReg = 0;
+	handle->device->ctrl.cmdIndex = SD_CMD_STOP_TRANSMISSION;
+
+	options = (SD_CMD_STOP_TRANSMISSION << 24) |
+		  (SD_CMDR_RSP_TYPE_R1b_5b << SD_CMDR_RSP_TYPE_S) |
+		  SD4_EMMC_TOP_CMD_CRC_EN_MASK |
+		  SD4_EMMC_TOP_CMD_CCHK_EN_MASK;
+
+	chal_sd_send_cmd((CHAL_HANDLE *) handle->device,
+			 handle->device->ctrl.cmdIndex,
+			 handle->device->ctrl.argReg, options);
+
+	event = wait_for_event(handle,
+			       SD4_EMMC_TOP_INTR_CMDDONE_MASK |
+			       SD_ERR_INTERRUPTS,
+			       handle->device->cfg.wfe_retry);
+
+	if (event & SD_CMD_ERROR_INT) {
+		rel = SD_ERROR_NON_RECOVERABLE;
+	} else {
+		if (event & SD_DAT_TIMEOUT) {
+			return SD_ERROR_NON_RECOVERABLE;
+		}
+
+		chal_sd_get_response((CHAL_HANDLE *) handle->device,
+				     (uint32_t *)&cmdRsp);
+
+		process_cmd_response(handle, handle->device->ctrl.cmdIndex,
+				     cmdRsp.data.r2.rsp1, cmdRsp.data.r2.rsp2,
+				     cmdRsp.data.r2.rsp3, cmdRsp.data.r2.rsp4,
+				     &cmdRsp);
+
+		SD_US_DELAY(2000);
+
+		present =
+		    chal_sd_get_present_status((CHAL_HANDLE *) handle->device);
+
+		if ((present & 0x00F00000) == 0x00F00000)
+			rel = SD_ERROR_RECOVERABLE;
+		else
+			rel = SD_ERROR_NON_RECOVERABLE;
+	}
+
+	return rel;
+}
+
+
+/*
+ * The function handles real data transmission on both DMA and
+ * none DMA mode, In None DMA mode the data transfer starts
+ * when the command is sent to the card, data has to be written
+ * into the host contollers buffer at this time one block
+ * at a time.
+ * In DMA mode, the real data transfer is done by the DMA engine
+ * and this functions just waits for the data transfer to complete.
+ *
+ */
+int process_data_xfer(struct sd_handle *handle, uint8_t *buffer, uint32_t addr,
+		      uint32_t length, int dir)
+{
+	if (dir == SD_XFER_HOST_TO_CARD) {
+#ifdef INCLUDE_EMMC_DRIVER_WRITE_CODE
+		if (handle->device->cfg.dma == SD_DMA_OFF) {
+			/*
+			 * In NON DMA mode, the real data xfer starts from here
+			 */
+			if (write_buffer(handle, length, buffer))
+				return SD_WRITE_ERROR;
+		} else {
+			wait_for_event(handle,
+				       SD4_EMMC_TOP_INTR_TXDONE_MASK |
+				       SD_ERR_INTERRUPTS,
+				       handle->device->cfg.wfe_retry);
+
+			if (handle->device->ctrl.cmdStatus == SD_OK)
+				return SD_OK;
+
+			check_error(handle, handle->device->ctrl.cmdStatus);
+			return SD_WRITE_ERROR;
+		}
+#else
+		return SD_WRITE_ERROR;
+#endif
+	} else {		/* SD_XFER_CARD_TO_HOST */
+
+		if (handle->device->cfg.dma == SD_DMA_OFF) {
+			/* In NON DMA mode, the real data
+			 * transfer starts from here
+			 */
+			if (read_buffer(handle, length, buffer))
+				return SD_READ_ERROR;
+
+		} else {	/* for DMA mode */
+
+			/*
+			 * once the data transmission is done
+			 * copy data to the host buffer.
+			 */
+			wait_for_event(handle,
+				       SD4_EMMC_TOP_INTR_TXDONE_MASK |
+				       SD_ERR_INTERRUPTS,
+				       handle->device->cfg.wfe_retry);
+
+			if (handle->device->ctrl.cmdStatus == SD_OK)
+				return SD_OK;
+
+			check_error(handle, handle->device->ctrl.cmdStatus);
+			return SD_READ_ERROR;
+		}
+	}
+	return SD_OK;
+}
+
+
+/*
+ * The function sets block size for the next SD/SDIO/MMC
+ * card read/write command.
+ */
+int select_blk_sz(struct sd_handle *handle, uint16_t size)
+{
+	return sd_cmd16(handle, size);
+}
+
+
+/*
+ * The function initalizes the SD/SDIO/MMC/CEATA and detects
+ * the card according to the flag of detection.
+ * Once this function is called, the card is put into ready state
+ * so application can do data transfer to and from the card.
+ */
+int init_card(struct sd_handle *handle, int detection)
+{
+	/*
+	 * After Reset, eMMC comes up in 1 Bit Data Width by default.
+	 * Set host side to match.
+	 */
+	chal_sd_config_bus_width((CHAL_HANDLE *) handle->device,
+				 SD_BUS_DATA_WIDTH_1BIT);
+
+#ifdef USE_EMMC_FIP_TOC_CACHE
+	cached_partition_block = 0;
+#endif
+	handle->device->ctrl.present = 0; /* init card present to be no card */
+
+	init_mmc_card(handle);
+
+	handle->device->ctrl.present = 1; /* card is detected */
+
+	/* switch the data width back */
+	if (handle->card->type != SD_CARD_MMC)
+		return SD_FAIL;
+
+	/*
+	 * Dynamically set Data Width to highest supported value.
+	 * Try different data width settings (highest to lowest).
+	 * Verify each setting by reading EXT_CSD and comparing
+	 * against the EXT_CSD contents previously read in call to
+	 * init_mmc_card() earlier. Stop at first verified data width
+	 * setting.
+	 */
+	{
+#define EXT_CSD_PROPERTIES_SECTION_START_INDEX	192
+#define EXT_CSD_PROPERTIES_SECTION_END_INDEX	511
+		uint8_t buffer[EXT_CSD_SIZE];
+#ifdef DRIVER_EMMC_ENABLE_DATA_WIDTH_8BIT
+		/* Try 8 Bit Data Width */
+		chal_sd_config_bus_width((CHAL_HANDLE *) handle->device,
+					 SD_BUS_DATA_WIDTH_8BIT);
+		if ((!set_card_data_width(handle, SD_BUS_DATA_WIDTH_8BIT)) &&
+		    (!mmc_cmd8(handle, buffer)) &&
+		    (!memcmp(&buffer[EXT_CSD_PROPERTIES_SECTION_START_INDEX],
+			     &(emmc_global_buf_ptr->u.Ext_CSD_storage[EXT_CSD_PROPERTIES_SECTION_START_INDEX]),
+			     EXT_CSD_PROPERTIES_SECTION_END_INDEX - EXT_CSD_PROPERTIES_SECTION_START_INDEX + 1)))
+
+			return SD_OK;
+#endif
+		/* Fall back to 4 Bit Data Width */
+		chal_sd_config_bus_width((CHAL_HANDLE *) handle->device,
+					 SD_BUS_DATA_WIDTH_4BIT);
+		if ((!set_card_data_width(handle, SD_BUS_DATA_WIDTH_4BIT)) &&
+		    (!mmc_cmd8(handle, buffer)) &&
+		    (!memcmp(&buffer[EXT_CSD_PROPERTIES_SECTION_START_INDEX],
+			     &(emmc_global_buf_ptr->u.Ext_CSD_storage[EXT_CSD_PROPERTIES_SECTION_START_INDEX]),
+			     EXT_CSD_PROPERTIES_SECTION_END_INDEX - EXT_CSD_PROPERTIES_SECTION_START_INDEX + 1)))
+
+			return SD_OK;
+
+		/* Fall back to 1 Bit Data Width */
+		chal_sd_config_bus_width((CHAL_HANDLE *) handle->device,
+					 SD_BUS_DATA_WIDTH_1BIT);
+		/* Just use 1 Bit Data Width then. */
+		if (!set_card_data_width(handle, SD_BUS_DATA_WIDTH_1BIT))
+			return SD_OK;
+
+	}
+	return SD_CARD_INIT_ERROR;
+}
+
+
+/*
+ * The function handles MMC/CEATA card initalization.
+ */
+int init_mmc_card(struct sd_handle *handle)
+{
+	uint32_t ocr = 0, newOcr, rc, limit = 0;
+	uint32_t cmd1_option = 0x40300000;
+	uint32_t sec_count;
+
+	handle->card->type = SD_CARD_MMC;
+
+	do {
+		SD_US_DELAY(1000);
+		newOcr = 0;
+		ocr = 0;
+		rc = sd_cmd1(handle, cmd1_option, &newOcr);
+		limit++;
+
+		if (rc == SD_OK)
+			ocr = newOcr;
+
+	} while (((ocr & SD_CARD_BUSY) == 0) && (limit < SD_CARD_RETRY_LIMIT));
+
+	if (limit >= SD_CARD_RETRY_LIMIT) {
+		handle->card->type = SD_CARD_UNKNOWN;
+		EMMC_TRACE("CMD1 Timeout: Device is not ready\n");
+		return SD_CARD_UNKNOWN;
+	}
+
+	/* Save the ocr register */
+	handle->device->ctrl.ocr = ocr;
+
+	/* Ready State */
+	rc = sd_cmd2(handle);
+	if (rc != SD_OK) {
+		handle->card->type = SD_CARD_UNKNOWN;
+		return SD_CARD_UNKNOWN;
+	}
+
+	rc = sd_cmd3(handle);
+	if (rc != SD_OK) {
+		handle->card->type = SD_CARD_UNKNOWN;
+		return SD_CARD_UNKNOWN;
+	}
+	/* read CSD */
+	rc = sd_cmd9(handle, &emmc_global_vars_ptr->cardData);
+	if (rc != SD_OK) {
+		handle->card->type = SD_CARD_UNKNOWN;
+		return SD_CARD_UNKNOWN;
+	}
+
+	/* Increase clock frequency according to what the card advertises */
+	EMMC_TRACE("From CSD...  cardData.csd.mmc.speed = 0x%X\n",
+		   emmc_global_vars_ptr->cardData.csd.mmc.speed);
+	process_csd_mmc_speed(handle,
+			      emmc_global_vars_ptr->cardData.csd.mmc.speed);
+
+	/* goto transfer mode */
+	rc = sd_cmd7(handle, handle->device->ctrl.rca);
+	if (rc != SD_OK) {
+		handle->card->type = SD_CARD_UNKNOWN;
+		return SD_CARD_UNKNOWN;
+	}
+
+	rc = mmc_cmd8(handle, emmc_global_buf_ptr->u.Ext_CSD_storage);
+	if (rc == SD_OK) {
+		/* calcul real capacity */
+		sec_count = emmc_global_buf_ptr->u.Ext_CSD_storage[212] |
+			    emmc_global_buf_ptr->u.Ext_CSD_storage[213] << 8 |
+			    emmc_global_buf_ptr->u.Ext_CSD_storage[214] << 16 |
+			    emmc_global_buf_ptr->u.Ext_CSD_storage[215] << 24;
+
+		EMMC_TRACE("Device density = %ldMBytes\n",
+			   handle->card->size / (1024 * 1024));
+
+		if (sec_count > 0) {
+			handle->card->size = (uint64_t)sec_count * 512;
+
+			EMMC_TRACE("Updated Device density = %ldMBytes\n",
+				   handle->card->size / (1024 * 1024));
+		}
+
+		if (sec_count > (2u * 1024 * 1024 * 1024) / 512) {
+			handle->device->ctrl.ocr |= SD_CARD_HIGH_CAPACITY;
+			handle->device->cfg.blockSize = 512;
+		}
+
+		if (handle->device->ctrl.ocr & SD_CARD_HIGH_CAPACITY)
+			EMMC_TRACE("Sector addressing\n");
+		else
+			EMMC_TRACE("Byte addressing\n");
+
+		EMMC_TRACE("Ext_CSD_storage[162]: 0x%02X  Ext_CSD_storage[179]: 0x%02X\n",
+			   emmc_global_buf_ptr->u.Ext_CSD_storage[162],
+			   emmc_global_buf_ptr->u.Ext_CSD_storage[179]);
+	}
+
+	return handle->card->type;
+}
+
+
+/*
+ * The function send reset command to the card.
+ * The card will be in ready status after the reset.
+ */
+int reset_card(struct sd_handle *handle)
+{
+	int res = SD_OK;
+
+	/* on reset, card's RCA should return to 0 */
+	handle->device->ctrl.rca = 0;
+
+	res = sd_cmd0(handle);
+
+	if (res != SD_OK)
+		return SD_RESET_ERROR;
+
+	return res;
+}
+
+
+/*
+ * The function sends command to the card and starts
+ * data transmission.
+ */
+static int xfer_data(struct sd_handle *handle,
+		     uint32_t mode,
+		     uint32_t addr, uint32_t length, uint8_t *base)
+{
+	int rc = SD_OK;
+
+	VERBOSE("XFER: dest: 0x%llx, addr: 0x%x, size: 0x%x bytes\n",
+		(uint64_t)base, addr, length);
+
+	if ((length / handle->device->cfg.blockSize) > 1) {
+		if (mode == SD_OP_READ) {
+			inv_dcache_range((uintptr_t)base, (uint64_t)length);
+			rc = sd_cmd18(handle, addr, length, base);
+		} else {
+#ifdef INCLUDE_EMMC_DRIVER_WRITE_CODE
+			flush_dcache_range((uintptr_t)base, (uint64_t)length);
+			rc = sd_cmd25(handle, addr, length, base);
+#else
+			rc = SD_DATA_XFER_ERROR;
+#endif
+		}
+	} else {
+		if (mode == SD_OP_READ) {
+			inv_dcache_range((uintptr_t)base, (uint64_t)length);
+			rc = sd_cmd17(handle, addr,
+				      handle->device->cfg.blockSize, base);
+		} else {
+#ifdef INCLUDE_EMMC_DRIVER_WRITE_CODE
+			flush_dcache_range((uintptr_t)base, (uint64_t)length);
+			rc = sd_cmd24(handle, addr,
+				      handle->device->cfg.blockSize, base);
+#else
+			rc = SD_DATA_XFER_ERROR;
+#endif
+		}
+	}
+
+	if (rc != SD_OK)
+		return SD_DATA_XFER_ERROR;
+
+	return SD_OK;
+}
+
+#ifdef INCLUDE_EMMC_DRIVER_ERASE_CODE
+int erase_card(struct sd_handle *handle, uint32_t addr, uint32_t blocks)
+{
+	uint32_t end_addr;
+
+	INFO("ERASE: addr: 0x%x, num of sectors: 0x%x\n", addr, blocks);
+
+	if (sd_cmd35(handle, addr) != SD_OK)
+		return SD_FAIL;
+
+	end_addr = addr + blocks - 1;
+	if (sd_cmd36(handle, end_addr) != SD_OK)
+		return SD_FAIL;
+
+	if (sd_cmd38(handle) != SD_OK)
+		return SD_FAIL;
+
+	return SD_OK;
+}
+#endif
+
+/*
+ * The function reads block data from a card.
+ */
+#ifdef USE_EMMC_FIP_TOC_CACHE
+int read_block(struct sd_handle *handle,
+	       uint8_t *dst, uint32_t addr, uint32_t len)
+{
+	int rel = SD_OK;
+
+	/*
+	 * Avoid doing repeated reads of the partition block
+	 * by caching.
+	 */
+	if (cached_partition_block &&
+	    addr == PARTITION_BLOCK_ADDR &&
+	    len == CACHE_SIZE) {
+		memcpy(dst, cached_block, len);
+	} else {
+		rel = xfer_data(handle, SD_OP_READ, addr, len, dst);
+
+		if (len == CACHE_SIZE && addr == PARTITION_BLOCK_ADDR) {
+			cached_partition_block = 1;
+			memcpy(cached_block, dst, len);
+		}
+	}
+
+	return rel;
+}
+#else
+int read_block(struct sd_handle *handle,
+	       uint8_t *dst, uint32_t addr, uint32_t len)
+{
+	return xfer_data(handle, SD_OP_READ, addr, len, dst);
+}
+#endif
+
+#ifdef INCLUDE_EMMC_DRIVER_WRITE_CODE
+
+/*
+ * The function writes block data to a card.
+ */
+int write_block(struct sd_handle *handle,
+		uint8_t *src, uint32_t addr, uint32_t len)
+{
+	int rel = SD_OK;
+
+	/*
+	 * Current HC has problem to get response of cmd16 after cmd12,
+	 * the delay is necessary to sure the next cmd16 will not be timed out.
+	 * The delay has to be at least 4 ms.
+	 * The code removed cmd16 and use cmd13 to get card status before
+	 * sending cmd18 or cmd25 to make sure the card is ready and thus
+	 * no need to have delay here.
+	 */
+
+	rel = xfer_data(handle, SD_OP_WRITE, addr, len, src);
+
+	EMMC_TRACE("wr_blk addr:0x%08X src:0x%08X len:0x%08X result:%d\n",
+		   addr, src, len, rel);
+
+	return rel;
+}
+
+
+/*
+ * The function is called to write one block data directly to
+ * a card's data buffer.
+ * it is used in Non-DMA mode for card data transmission.
+ */
+int write_buffer(struct sd_handle *handle, uint32_t length, uint8_t *data)
+{
+	uint32_t rem, blockSize, event;
+	uint8_t *pData = data;
+
+	blockSize = handle->device->cfg.blockSize;
+	rem = length;
+
+	if (rem == 0)
+		return SD_OK;
+
+	while (rem > 0) {
+
+		event = wait_for_event(handle,
+				       SD4_EMMC_TOP_INTR_BWRDY_MASK |
+				       SD_ERR_INTERRUPTS,
+				       handle->device->cfg.wfe_retry);
+
+		if (handle->device->ctrl.cmdStatus) {
+			check_error(handle, handle->device->ctrl.cmdStatus);
+			return SD_WRITE_ERROR;
+		}
+
+		if (rem >= blockSize)
+			chal_sd_write_buffer((CHAL_HANDLE *) handle->device,
+					     blockSize, pData);
+		else
+			chal_sd_write_buffer((CHAL_HANDLE *) handle->device,
+					     rem, pData);
+
+		if (rem > blockSize) {
+			rem -= blockSize;
+			pData += blockSize;
+		} else {
+			pData += rem;
+			rem = 0;
+		}
+	}
+
+	if ((event & SD4_EMMC_TOP_INTR_TXDONE_MASK) !=
+	    SD4_EMMC_TOP_INTR_TXDONE_MASK) {
+		event = wait_for_event(handle,
+				       SD4_EMMC_TOP_INTR_TXDONE_MASK |
+				       SD_ERR_INTERRUPTS,
+				       handle->device->cfg.wfe_retry);
+
+		if (handle->device->ctrl.cmdStatus != SD_OK) {
+			check_error(handle, handle->device->ctrl.cmdStatus);
+			return SD_WRITE_ERROR;
+		}
+	} else {
+		handle->device->ctrl.eventList &= ~SD4_EMMC_TOP_INTR_TXDONE_MASK;
+	}
+
+	return SD_OK;
+}
+#endif /* INCLUDE_EMMC_DRIVER_WRITE_CODE */
+
+
+/*
+ * The function is called to read maximal one block data
+ * directly from a card
+ * It is used in Non-DMA mode for card data transmission.
+ */
+int read_buffer(struct sd_handle *handle, uint32_t length, uint8_t *data)
+{
+	uint32_t rem, blockSize, event = 0;
+	uint8_t *pData = data;
+
+	blockSize = handle->device->cfg.blockSize;
+	rem = length;
+
+	if (rem == 0)
+		return SD_OK;
+
+	while (rem > 0) {
+		event = wait_for_event(handle,
+				       SD4_EMMC_TOP_INTR_BRRDY_MASK |
+				       SD_ERR_INTERRUPTS,
+				       handle->device->cfg.wfe_retry);
+
+		if (handle->device->ctrl.cmdStatus) {
+			check_error(handle, handle->device->ctrl.cmdStatus);
+			return SD_READ_ERROR;
+		}
+
+		if (rem >= blockSize)
+			chal_sd_read_buffer((CHAL_HANDLE *) handle->device,
+					    blockSize, pData);
+		else
+			chal_sd_read_buffer((CHAL_HANDLE *) handle->device, rem,
+					    pData);
+
+		if (rem > blockSize) {
+			rem -= blockSize;
+			pData += blockSize;
+		} else {
+			pData += rem;
+			rem = 0;
+		}
+	}
+
+	/* In case, there are extra data in the SD FIFO, just dump them. */
+	chal_sd_dump_fifo((CHAL_HANDLE *) handle->device);
+
+	if ((event & SD4_EMMC_TOP_INTR_TXDONE_MASK) !=
+	    SD4_EMMC_TOP_INTR_TXDONE_MASK) {
+		event = wait_for_event(handle, SD4_EMMC_TOP_INTR_TXDONE_MASK,
+				       handle->device->cfg.wfe_retry);
+
+		if (handle->device->ctrl.cmdStatus) {
+			check_error(handle, handle->device->ctrl.cmdStatus);
+			return SD_READ_ERROR;
+		}
+	} else {
+		handle->device->ctrl.eventList &= ~SD4_EMMC_TOP_INTR_TXDONE_MASK;
+	}
+
+	return SD_OK;
+}
+
+
+/*
+ * Error handling routine.
+ * The function just reset the DAT
+ * and CMD line if an error occures during data transmission.
+ */
+int check_error(struct sd_handle *handle, uint32_t ints)
+{
+	uint32_t rel;
+
+	chal_sd_set_irq_signal((CHAL_HANDLE *) handle->device,
+			       SD_ERR_INTERRUPTS, 0);
+
+	if (ints & SD4_EMMC_TOP_INTR_CMDERROR_MASK) {
+
+		chal_sd_reset_line((CHAL_HANDLE *) handle->device,
+				   SD4_EMMC_TOP_CTRL1_CMDRST_MASK);
+		rel = abort_err(handle);
+
+		chal_sd_reset_line((CHAL_HANDLE *) handle->device,
+				   SD4_EMMC_TOP_CTRL1_DATRST_MASK);
+		chal_sd_set_irq_signal((CHAL_HANDLE *) handle->device,
+				       SD_ERR_INTERRUPTS, 1);
+
+		return (rel == SD_ERROR_NON_RECOVERABLE) ?
+				SD_ERROR_NON_RECOVERABLE : SD_ERROR_RECOVERABLE;
+	} else {
+		rel = err_recovery(handle, ints);
+	}
+
+	chal_sd_set_irq_signal((CHAL_HANDLE *) handle->device,
+			       SD_ERR_INTERRUPTS, 1);
+
+	return rel;
+}
+
+
+/*
+ * Error recovery routine.
+ * Try to recover from the error.
+ */
+static int err_recovery(struct sd_handle *handle, uint32_t errors)
+{
+	uint32_t rel = 0;
+
+	/*
+	 * In case of timeout error, the cmd line and data line maybe
+	 * still active or stuck at atcitve so it is needed to reset
+	 * either data line or cmd line to make sure a new cmd can be sent.
+	 */
+
+	if (errors & SD_CMD_ERROR_INT)
+		chal_sd_reset_line((CHAL_HANDLE *) handle->device,
+				   SD4_EMMC_TOP_CTRL1_CMDRST_MASK);
+
+	if (errors & SD_DAT_ERROR_INT)
+		chal_sd_reset_line((CHAL_HANDLE *) handle->device,
+				   SD4_EMMC_TOP_CTRL1_DATRST_MASK);
+
+	/* Abort transaction by sending out stop command */
+	if ((handle->device->ctrl.cmdIndex == 18) ||
+	    (handle->device->ctrl.cmdIndex == 25))
+		rel = abort_err(handle);
+
+	return rel;
+}
+
+
+/*
+ * The function is called to read one block data directly from a card.
+ * It is used in Non-DMA mode for card data transmission.
+ */
+int process_cmd_response(struct sd_handle *handle,
+			 uint32_t cmdIndex,
+			 uint32_t rsp0,
+			 uint32_t rsp1,
+			 uint32_t rsp2, uint32_t rsp3, struct sd_resp *resp)
+{
+	int result = SD_OK;
+
+	/* R6 */
+	uint32_t rca = (rsp0 >> 16) & 0xffff;
+	uint32_t cardStatus = rsp0;
+
+	/* R4 */
+	uint32_t cBit = (rsp0 >> 31) & 0x1;
+	uint32_t funcs = (rsp0 >> 28) & 0x7;
+	uint32_t memPresent = (rsp0 >> 27) & 0x1;
+
+	resp->r1 = 0x3f;
+	resp->cardStatus = cardStatus;
+
+	if (cmdIndex == SD_CMD_IO_SEND_OP_COND) {
+		resp->data.r4.cardReady = cBit;
+		resp->data.r4.funcs = funcs;
+		resp->data.r4.memPresent = memPresent;
+		resp->data.r4.ocr = cardStatus;
+	}
+
+	if (cmdIndex == SD_CMD_MMC_SET_RCA) {
+		resp->data.r6.rca = rca;
+		resp->data.r6.cardStatus = cardStatus & 0xFFFF;
+	}
+
+	if (cmdIndex == SD_CMD_SELECT_DESELECT_CARD) {
+		resp->data.r7.rca = rca;
+	}
+
+	if (cmdIndex == SD_CMD_IO_RW_DIRECT) {
+		if (((rsp0 >> 16) & 0xffff) != 0)
+			result = SD_CMD_ERR_INVALID_RESPONSE;
+
+		resp->data.r5.data = rsp0 & 0xff;
+	}
+
+	if (cmdIndex == SD_CMD_IO_RW_EXTENDED) {
+		if (((rsp0 >> 16) & 0xffff) != 0)
+			result = SD_CMD_ERR_INVALID_RESPONSE;
+
+		resp->data.r5.data = rsp0 & 0xff;
+	}
+
+	if (cmdIndex == SD_ACMD_SD_SEND_OP_COND ||
+	    cmdIndex == SD_CMD_SEND_OPCOND)
+		resp->data.r3.ocr = cardStatus;
+
+	if (cmdIndex == SD_CMD_SEND_CSD ||
+	    cmdIndex == SD_CMD_SEND_CID ||
+	    cmdIndex == SD_CMD_ALL_SEND_CID) {
+		resp->data.r2.rsp4 = rsp3;
+		resp->data.r2.rsp3 = rsp2;
+		resp->data.r2.rsp2 = rsp1;
+		resp->data.r2.rsp1 = rsp0;
+	}
+
+	if ((cmdIndex == SD_CMD_READ_EXT_CSD) &&
+	    (handle->card->type == SD_CARD_SD)) {
+		if ((resp->cardStatus & 0xAA) != 0xAA) {
+			result = SD_CMD_ERR_INVALID_RESPONSE;
+		}
+	}
+
+	return result;
+}
+
+
+/*
+ * The function sets DMA buffer and data length, process
+ * block size and the number of blocks to be transferred.
+ * It returns the DMA buffer address.
+ * It copies dma data from user buffer to the DMA buffer
+ * if the operation is to write data to the SD card.
+ */
+void data_xfer_setup(struct sd_handle *handle, uint8_t *data, uint32_t length,
+		     int dir)
+{
+	chal_sd_setup_xfer((CHAL_HANDLE *)handle->device, data, length, dir);
+}
+
+
+/*
+ * The function does soft reset the host SD controller. After
+ * the function call all host controller's register are reset
+ * to default vallue;
+ *
+ * Note    This function only resets the host controller it does not
+ *          reset the controller's handler.
+ */
+int reset_host_ctrl(struct sd_handle *handle)
+{
+	chal_sd_stop();
+
+	return SD_OK;
+}
+
+static void pstate_log(struct sd_handle *handle)
+{
+	ERROR("PSTATE: 0x%x\n", mmio_read_32
+		(handle->device->ctrl.sdRegBaseAddr +
+			SD4_EMMC_TOP_PSTATE_SD4_OFFSET));
+	ERROR("ERRSTAT: 0x%x\n", mmio_read_32
+		(handle->device->ctrl.sdRegBaseAddr +
+			SD4_EMMC_TOP_ERRSTAT_OFFSET));
+}
+
+/*
+ * The function waits for one or a group of interrupts specified
+ * by mask. The function returns if any one the interrupt status
+ * is set. If interrupt mode is not enabled then it will poll
+ * the interrupt status register until a interrupt status is set
+ * an error interrupt happens. If interrupt mode is enabled then
+ * this function should be called after the interrupt
+ * is received by ISR routine.
+ */
+uint32_t wait_for_event(struct sd_handle *handle,
+			uint32_t mask, uint32_t retry)
+{
+	uint32_t regval, cmd12, time = 0;
+
+	handle->device->ctrl.cmdStatus = 0;	/* no error */
+	EMMC_TRACE("%s %d mask:0x%x timeout:%d irq_status:0x%x\n",
+		   __func__, __LINE__, mask, retry,
+		   chal_sd_get_irq_status((CHAL_HANDLE *)handle->device));
+
+	/* Polling mode */
+	do {
+		regval = chal_sd_get_irq_status((CHAL_HANDLE *)handle->device);
+
+		if (regval & SD4_EMMC_TOP_INTR_DMAIRQ_MASK) {
+			chal_sd_set_dma_addr((CHAL_HANDLE *)handle->device,
+					(uintptr_t)
+				chal_sd_get_dma_addr((CHAL_HANDLE *)
+						handle->device));
+			chal_sd_clear_irq((CHAL_HANDLE *)handle->device,
+					  SD4_EMMC_TOP_INTR_DMAIRQ_MASK);
+		}
+
+		if (time++ > retry) {
+			ERROR("EMMC: No response (cmd%d) after %dus.\n",
+			      handle->device->ctrl.cmdIndex,
+			      time * EMMC_WFE_RETRY_DELAY_US);
+			handle->device->ctrl.cmdStatus = SD_CMD_MISSING;
+			pstate_log(handle);
+			ERROR("EMMC: INT[0x%x]\n", regval);
+			break;
+		}
+
+		if (regval & SD4_EMMC_TOP_INTR_CTOERR_MASK) {
+			ERROR("EMMC: Cmd%d timeout INT[0x%x]\n",
+			      handle->device->ctrl.cmdIndex, regval);
+			handle->device->ctrl.cmdStatus =
+			    SD4_EMMC_TOP_INTR_CTOERR_MASK;
+			pstate_log(handle);
+			break;
+		}
+		if (regval & SD_CMD_ERROR_FLAGS) {
+			ERROR("EMMC: Cmd%d error INT[0x%x]\n",
+			      handle->device->ctrl.cmdIndex, regval);
+			handle->device->ctrl.cmdStatus = SD_CMD_ERROR_FLAGS;
+			pstate_log(handle);
+			break;
+		}
+
+		cmd12 = chal_sd_get_atuo12_error((CHAL_HANDLE *)handle->device);
+		if (cmd12) {
+			ERROR("EMMC: Cmd%d auto cmd12 err:0x%x\n",
+			      handle->device->ctrl.cmdIndex, cmd12);
+			handle->device->ctrl.cmdStatus = cmd12;
+			pstate_log(handle);
+			break;
+		}
+
+		if (SD_DATA_ERROR_FLAGS & regval) {
+			ERROR("EMMC: Data for cmd%d error, INT[0x%x]\n",
+			      handle->device->ctrl.cmdIndex, regval);
+			handle->device->ctrl.cmdStatus =
+			    (SD_DATA_ERROR_FLAGS & regval);
+			pstate_log(handle);
+			break;
+		}
+
+		if ((regval & mask) == 0)
+			udelay(EMMC_WFE_RETRY_DELAY_US);
+
+	} while ((regval & mask) == 0);
+
+	/* clear the interrupt since it is processed */
+	chal_sd_clear_irq((CHAL_HANDLE *)handle->device, (regval & mask));
+
+	return (regval & mask);
+}
+
+int32_t set_config(struct sd_handle *handle, uint32_t speed, uint32_t retry,
+		    uint32_t dma, uint32_t dmaBound, uint32_t blkSize,
+		    uint32_t wfe_retry)
+{
+	int32_t rel = 0;
+
+	if (handle == NULL)
+		return SD_FAIL;
+
+	handle->device->cfg.wfe_retry = wfe_retry;
+
+	rel = chal_sd_config((CHAL_HANDLE *)handle->device, speed, retry,
+			     dmaBound, blkSize, dma);
+	return rel;
+
+}
+
+int mmc_cmd1(struct sd_handle *handle)
+{
+	uint32_t newOcr, res;
+	uint32_t cmd1_option = MMC_OCR_OP_VOLT | MMC_OCR_SECTOR_ACCESS_MODE;
+
+	/*
+	 * After Reset, eMMC comes up in 1 Bit Data Width by default.
+	 * Set host side to match.
+	 */
+	chal_sd_config_bus_width((CHAL_HANDLE *) handle->device,
+				 SD_BUS_DATA_WIDTH_1BIT);
+
+#ifdef USE_EMMC_FIP_TOC_CACHE
+	cached_partition_block = 0;
+#endif
+	handle->device->ctrl.present = 0; /* init card present to be no card */
+
+	handle->card->type = SD_CARD_MMC;
+
+	res = sd_cmd1(handle, cmd1_option, &newOcr);
+
+	if (res != SD_OK) {
+		EMMC_TRACE("CMD1 Timeout: Device is not ready\n");
+		res = SD_CARD_UNKNOWN;
+	}
+	return res;
+}
diff --git a/drivers/brcm/emmc/emmc_csl_sdcmd.c b/drivers/brcm/emmc/emmc_csl_sdcmd.c
new file mode 100644
index 0000000..c62886c
--- /dev/null
+++ b/drivers/brcm/emmc/emmc_csl_sdcmd.c
@@ -0,0 +1,842 @@
+/*
+ * Copyright (c) 2016 - 2020, Broadcom
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <stdlib.h>
+#include <stddef.h>
+
+#include "bcm_emmc.h"
+#include "emmc_chal_types.h"
+#include "emmc_chal_sd.h"
+#include "emmc_csl_sdprot.h"
+#include "emmc_csl_sdcmd.h"
+#include "emmc_csl_sd.h"
+#include "emmc_chal_sd.h"
+#include "emmc_pboot_hal_memory_drv.h"
+
+int sd_cmd0(struct sd_handle *handle)
+{
+	int res;
+	uint32_t argument = 0x0; /* Go to IDLE state. */
+
+	/* send cmd and parse result */
+	res = send_cmd(handle, SD_CMD_GO_IDLE_STATE, argument, 0, NULL);
+
+	if (res == SD_OK) {
+		/* Clear all other interrupts */
+		chal_sd_clear_irq((void *)handle->device, 0xffffffff);
+	}
+
+	return res;
+}
+
+int sd_cmd1(struct sd_handle *handle, uint32_t ocr, uint32_t *ocr_output)
+{
+	int res;
+	uint32_t options;
+	struct sd_resp resp;
+
+	options = SD_CMDR_RSP_TYPE_R3_4 << SD_CMDR_RSP_TYPE_S;
+
+	if (ocr_output == NULL) {
+		EMMC_TRACE("Invalid args\n");
+		return SD_FAIL;
+	}
+
+	/* send cmd and parse result */
+	res = send_cmd(handle, SD_CMD_SEND_OPCOND, ocr, options, &resp);
+
+	if (res == SD_OK)
+		*ocr_output = resp.data.r3.ocr;
+
+	return res;
+}
+
+int sd_cmd2(struct sd_handle *handle)
+{
+	uint32_t options;
+	struct sd_resp resp;
+
+	/* send cmd and parse result */
+	options = SD_CMDR_RSP_TYPE_R2 << SD_CMDR_RSP_TYPE_S;
+
+	return send_cmd(handle, SD_CMD_ALL_SEND_CID, 0, options, &resp);
+}
+
+int sd_cmd3(struct sd_handle *handle)
+{
+	int res;
+	uint32_t options = 0;
+	uint32_t argument;
+	struct sd_resp resp;
+
+	/* use non zero and non 0x1 value for rca */
+	handle->device->ctrl.rca = 0x5;
+	argument = handle->device->ctrl.rca << SD_CMD7_ARG_RCA_SHIFT;
+
+	options = SD_CMDR_RSP_TYPE_R1_5_6 << SD_CMDR_RSP_TYPE_S |
+		  SD4_EMMC_TOP_CMD_CCHK_EN_MASK |
+		  SD4_EMMC_TOP_CMD_CRC_EN_MASK;
+
+	/* send cmd and parse result */
+	res = send_cmd(handle, SD_CMD_MMC_SET_RCA, argument, options, &resp);
+
+	if (res != SD_OK)
+		handle->device->ctrl.rca = 0;
+
+	return res;
+}
+
+int sd_cmd7(struct sd_handle *handle, uint32_t rca)
+{
+	int res;
+	uint32_t argument, options;
+	struct sd_resp resp;
+
+	argument = (rca << SD_CMD7_ARG_RCA_SHIFT);
+
+	/*
+	 * Response to CMD7 is:
+	 * R1 while selectiing from Stand-By State to Transfer State
+	 * R1b while selecting from Disconnected State to Programming State.
+	 *
+	 * In this driver, we only issue a CMD7 once, to go to transfer mode
+	 * during init_mmc_card().
+	 */
+	options = SD_CMDR_RSP_TYPE_R1_5_6 << SD_CMDR_RSP_TYPE_S |
+		  SD4_EMMC_TOP_CMD_CCHK_EN_MASK |
+		  SD4_EMMC_TOP_CMD_CRC_EN_MASK;
+
+	/* send cmd and parse result */
+	res = send_cmd(handle, SD_CMD_SELECT_DESELECT_CARD, argument, options,
+		       &resp);
+
+	if (res == SD_OK)
+		/* Clear all other interrupts */
+		chal_sd_clear_irq((void *)handle->device, 0xffffffff);
+
+	return res;
+}
+
+
+/*
+ * CMD8 Get CSD_EXT
+ */
+int mmc_cmd8(struct sd_handle *handle, uint8_t *extCsdReg)
+{
+	uint32_t res, options;
+	struct sd_resp resp;
+
+	data_xfer_setup(handle, extCsdReg, CEATA_EXT_CSDBLOCK_SIZE,
+			    SD_XFER_CARD_TO_HOST);
+
+	options = SD_CMDR_RSP_TYPE_R1_5_6 << SD_CMDR_RSP_TYPE_S |
+		  SD4_EMMC_TOP_CMD_DPS_MASK | SD4_EMMC_TOP_CMD_DTDS_MASK |
+		  SD4_EMMC_TOP_CMD_CCHK_EN_MASK | SD4_EMMC_TOP_CMD_CRC_EN_MASK;
+
+	/* send cmd and parse result */
+	res = send_cmd(handle, SD_CMD_READ_EXT_CSD, 0, options, &resp);
+
+	if (res == SD_OK)
+		res = process_data_xfer(handle, extCsdReg, 0,
+					CEATA_EXT_CSDBLOCK_SIZE,
+					SD_XFER_CARD_TO_HOST);
+
+	return res;
+}
+
+int sd_cmd9(struct sd_handle *handle, struct sd_card_data *card)
+{
+	int res;
+	uint32_t argument, options, iBlkNum, multiFactor = 1;
+	uint32_t maxReadBlockLen = 1, maxWriteBlockLen = 1;
+	struct sd_resp resp;
+
+	argument = handle->device->ctrl.rca << SD_CMD7_ARG_RCA_SHIFT;
+
+	options = SD_CMDR_RSP_TYPE_R2 << SD_CMDR_RSP_TYPE_S |
+		  SD4_EMMC_TOP_CMD_CRC_EN_MASK;
+
+	/* send cmd and parse result */
+	res = send_cmd(handle, SD_CMD_SEND_CSD, argument, options, &resp);
+
+	if (res != SD_OK)
+		return res;
+
+	if (handle->card->type == SD_CARD_MMC) {
+		card->csd.mmc.structure = (resp.data.r2.rsp4 >> 22) & 0x3;
+		card->csd.mmc.csdSpecVer = (resp.data.r2.rsp4 >> 18) & 0x0f;
+		card->csd.mmc.taac = (resp.data.r2.rsp4 >> 8) & 0xff;
+		card->csd.mmc.nsac = resp.data.r2.rsp4 & 0xff;
+		card->csd.mmc.speed = resp.data.r2.rsp3 >> 24;
+		card->csd.mmc.classes = (resp.data.r2.rsp3 >> 12) & 0xfff;
+		card->csd.mmc.rdBlkLen = (resp.data.r2.rsp3 >> 8) & 0xf;
+		card->csd.mmc.rdBlkPartial = (resp.data.r2.rsp3 >> 7) & 0x01;
+		card->csd.mmc.wrBlkMisalign = (resp.data.r2.rsp3 >> 6) & 0x1;
+		card->csd.mmc.rdBlkMisalign = (resp.data.r2.rsp3 >> 5) & 0x1;
+		card->csd.mmc.dsr = (resp.data.r2.rsp2 >> 4) & 0x01;
+		card->csd.mmc.size =
+		    ((resp.data.r2.rsp3 & 0x3) << 10) +
+		    ((resp.data.r2.rsp2 >> 22) & 0x3ff);
+		card->csd.mmc.vddRdCurrMin = (resp.data.r2.rsp2 >> 19) & 0x7;
+		card->csd.mmc.vddRdCurrMax = (resp.data.r2.rsp2 >> 16) & 0x7;
+		card->csd.mmc.vddWrCurrMin = (resp.data.r2.rsp2 >> 13) & 0x7;
+		card->csd.mmc.vddWrCurrMax = (resp.data.r2.rsp2 >> 10) & 0x7;
+		card->csd.mmc.devSizeMulti = (resp.data.r2.rsp2 >> 7) & 0x7;
+		card->csd.mmc.eraseGrpSize = (resp.data.r2.rsp2 >> 2) & 0x1f;
+		card->csd.mmc.eraseGrpSizeMulti =
+		    ((resp.data.r2.rsp2 & 0x3) << 3) +
+		    ((resp.data.r2.rsp1 >> 29) & 0x7);
+		card->csd.mmc.wrProtGroupSize =
+		    ((resp.data.r2.rsp1 >> 24) & 0x1f);
+		card->csd.mmc.wrProtGroupEnable =
+		    (resp.data.r2.rsp1 >> 23) & 0x1;
+		card->csd.mmc.manuDefEcc = (resp.data.r2.rsp1 >> 21) & 0x3;
+		card->csd.mmc.wrSpeedFactor = (resp.data.r2.rsp1 >> 18) & 0x7;
+		card->csd.mmc.wrBlkLen = (resp.data.r2.rsp1 >> 14) & 0xf;
+		card->csd.mmc.wrBlkPartial = (resp.data.r2.rsp1 >> 13) & 0x1;
+		card->csd.mmc.protAppl = (resp.data.r2.rsp1 >> 8) & 0x1;
+		card->csd.mmc.copyFlag = (resp.data.r2.rsp1 >> 7) & 0x1;
+		card->csd.mmc.permWrProt = (resp.data.r2.rsp1 >> 6) & 0x1;
+		card->csd.mmc.tmpWrProt = (resp.data.r2.rsp1 >> 5) & 0x1;
+		card->csd.mmc.fileFormat = (resp.data.r2.rsp1 >> 4) & 0x03;
+		card->csd.mmc.eccCode = resp.data.r2.rsp1 & 0x03;
+		maxReadBlockLen <<= card->csd.mmc.rdBlkLen;
+		maxWriteBlockLen <<= card->csd.mmc.wrBlkLen;
+
+		iBlkNum = card->csd.mmc.size + 1;
+		multiFactor = (1 << (card->csd.mmc.devSizeMulti + 2));
+
+		handle->card->size =
+		    iBlkNum * multiFactor * (1 << card->csd.mmc.rdBlkLen);
+	}
+
+	handle->card->maxRdBlkLen = maxReadBlockLen;
+	handle->card->maxWtBlkLen = maxWriteBlockLen;
+
+	if (handle->card->size < 0xA00000) {
+		/*
+		 * 10MB Too small size mean, cmd9 response is wrong,
+		 * Use default value 1G
+		 */
+		handle->card->size = 0x40000000;
+		handle->card->maxRdBlkLen = 512;
+		handle->card->maxWtBlkLen = 512;
+	}
+
+	if ((handle->card->maxRdBlkLen > 512) ||
+	    (handle->card->maxWtBlkLen > 512)) {
+		handle->card->maxRdBlkLen = 512;
+		handle->card->maxWtBlkLen = 512;
+	} else if ((handle->card->maxRdBlkLen == 0) ||
+		   (handle->card->maxWtBlkLen == 0)) {
+		handle->card->maxRdBlkLen = 512;
+		handle->card->maxWtBlkLen = 512;
+	}
+
+	handle->device->cfg.blockSize = handle->card->maxRdBlkLen;
+
+	return res;
+}
+
+int sd_cmd13(struct sd_handle *handle, uint32_t *status)
+{
+	int res;
+	uint32_t argument, options;
+	struct sd_resp resp;
+
+	argument = handle->device->ctrl.rca << SD_CMD7_ARG_RCA_SHIFT;
+
+	options = SD_CMDR_RSP_TYPE_R1_5_6 << SD_CMDR_RSP_TYPE_S |
+		  SD4_EMMC_TOP_CMD_CCHK_EN_MASK |
+		  SD4_EMMC_TOP_CMD_CRC_EN_MASK;
+
+	/* send cmd and parse result */
+	res = send_cmd(handle, SD_CMD_SEND_STATUS, argument, options, &resp);
+
+	if (res == SD_OK) {
+		*status = resp.cardStatus;
+	}
+
+	return res;
+}
+
+int sd_cmd16(struct sd_handle *handle, uint32_t length)
+{
+	int res;
+	uint32_t argument, options, ntry;
+	struct sd_resp resp;
+
+	argument = length;
+
+	options = SD_CMDR_RSP_TYPE_R1_5_6 << SD_CMDR_RSP_TYPE_S |
+		  SD4_EMMC_TOP_CMD_CRC_EN_MASK |
+		  SD4_EMMC_TOP_CMD_CCHK_EN_MASK;
+
+	ntry = 0;
+	do {
+		res = sd_cmd13(handle, &resp.cardStatus);
+		if (res != SD_OK) {
+			EMMC_TRACE(
+				"cmd13 failed before cmd16: rca 0x%0x, return %d, response 0x%0x\n",
+				handle->device->ctrl.rca, res, resp.cardStatus);
+			return res;
+		}
+
+		if (resp.cardStatus & 0x100)
+			break;
+
+		EMMC_TRACE("cmd13 rsp:0x%08x before cmd16\n", resp.cardStatus);
+
+		if (ntry > handle->device->cfg.retryLimit) {
+			EMMC_TRACE("cmd13 retry reach limit %d\n",
+				   handle->device->cfg.retryLimit);
+			return SD_CMD_TIMEOUT;
+		}
+
+		ntry++;
+		EMMC_TRACE("cmd13 retry %d\n", ntry);
+
+		SD_US_DELAY(1000);
+
+	} while (1);
+
+	/* send cmd and parse result */
+	res = send_cmd(handle, SD_CMD_SET_BLOCKLEN, argument, options, &resp);
+
+	return res;
+}
+
+int sd_cmd17(struct sd_handle *handle,
+	     uint32_t addr, uint32_t len, uint8_t *buffer)
+{
+	int res;
+	uint32_t argument, options, ntry;
+	struct sd_resp resp;
+
+	ntry = 0;
+	do {
+		res = sd_cmd13(handle, &resp.cardStatus);
+		if (res != SD_OK) {
+			EMMC_TRACE(
+				"cmd 13 failed before cmd17: rca 0x%0x, return %d, response 0x%0x\n",
+				handle->device->ctrl.rca, res, resp.cardStatus);
+			return res;
+		}
+
+		if (resp.cardStatus & 0x100)
+			break;
+
+		EMMC_TRACE("cmd13 rsp:0x%08x before cmd17\n", resp.cardStatus);
+
+		if (ntry > handle->device->cfg.retryLimit) {
+			EMMC_TRACE("cmd13 retry reach limit %d\n",
+				   handle->device->cfg.retryLimit);
+			return SD_CMD_TIMEOUT;
+		}
+
+		ntry++;
+		EMMC_TRACE("cmd13 retry %d\n", ntry);
+
+		SD_US_DELAY(1000);
+
+	} while (1);
+
+	data_xfer_setup(handle, buffer, len, SD_XFER_CARD_TO_HOST);
+
+	/* send cmd and parse result */
+	argument = addr;
+	options = SD_CMDR_RSP_TYPE_R1_5_6 << SD_CMDR_RSP_TYPE_S |
+		  SD4_EMMC_TOP_CMD_DPS_MASK | SD4_EMMC_TOP_CMD_DTDS_MASK |
+		  SD4_EMMC_TOP_CMD_CRC_EN_MASK | SD4_EMMC_TOP_CMD_CCHK_EN_MASK;
+
+	res = send_cmd(handle, SD_CMD_READ_SINGLE_BLOCK, argument, options,
+		       &resp);
+
+	if (res != SD_OK)
+		return res;
+
+	res = process_data_xfer(handle, buffer, addr, len, SD_XFER_CARD_TO_HOST);
+
+	return res;
+}
+
+int sd_cmd18(struct sd_handle *handle,
+	     uint32_t addr, uint32_t len, uint8_t *buffer)
+{
+	int res;
+	uint32_t argument, options, ntry;
+	struct sd_resp resp;
+
+	ntry = 0;
+	do {
+		res = sd_cmd13(handle, &resp.cardStatus);
+		if (res != SD_OK) {
+			EMMC_TRACE(
+				"cmd 13 failed before cmd18: rca 0x%0x, return %d, response 0x%0x\n",
+				handle->device->ctrl.rca, res, resp.cardStatus);
+			return res;
+		}
+
+		if (resp.cardStatus & 0x100)
+			break;
+
+		EMMC_TRACE("cmd13 rsp:0x%08x before cmd18\n", resp.cardStatus);
+
+		if (ntry > handle->device->cfg.retryLimit) {
+			EMMC_TRACE("cmd13 retry reach limit %d\n",
+				   handle->device->cfg.retryLimit);
+			return SD_CMD_TIMEOUT;
+		}
+
+		ntry++;
+		EMMC_TRACE("cmd13 retry %d\n", ntry);
+
+		SD_US_DELAY(1000);
+	} while (1);
+
+	data_xfer_setup(handle, buffer, len, SD_XFER_CARD_TO_HOST);
+
+	argument = addr;
+
+	options = SD_CMDR_RSP_TYPE_R1_5_6 << SD_CMDR_RSP_TYPE_S |
+		  SD4_EMMC_TOP_CMD_DPS_MASK | SD4_EMMC_TOP_CMD_DTDS_MASK |
+		  SD4_EMMC_TOP_CMD_MSBS_MASK | SD4_EMMC_TOP_CMD_CCHK_EN_MASK |
+		  SD4_EMMC_TOP_CMD_BCEN_MASK | SD4_EMMC_TOP_CMD_CRC_EN_MASK |
+		  BIT(SD4_EMMC_TOP_CMD_ACMDEN_SHIFT);
+
+	/* send cmd and parse result */
+	res = send_cmd(handle, SD_CMD_READ_MULTIPLE_BLOCK, argument, options,
+		       &resp);
+
+	if (res != SD_OK)
+		return res;
+
+	res = process_data_xfer(handle, buffer, addr, len, SD_XFER_CARD_TO_HOST);
+
+	return res;
+}
+
+#ifdef INCLUDE_EMMC_DRIVER_ERASE_CODE
+static int card_sts_resp(struct sd_handle *handle, uint32_t *status)
+{
+	int res;
+	uint32_t ntry = 0;
+
+	do {
+		res = sd_cmd13(handle, status);
+		if (res != SD_OK) {
+			EMMC_TRACE(
+				"cmd 13 failed before cmd35: rca 0x%0x, return %d\n",
+				handle->device->ctrl.rca, res);
+			return res;
+		}
+
+		if (*status & 0x100)
+			break;
+
+		EMMC_TRACE("cmd13 rsp:0x%08x before cmd35\n", resp.cardStatus);
+
+		if (ntry > handle->device->cfg.retryLimit) {
+			EMMC_TRACE("cmd13 retry reach limit %d\n",
+				   handle->device->cfg.retryLimit);
+			return SD_CMD_TIMEOUT;
+		}
+
+		ntry++;
+		EMMC_TRACE("cmd13 retry %d\n", ntry);
+
+		SD_US_DELAY(1000);
+	} while (1);
+
+	return SD_OK;
+}
+
+int sd_cmd35(struct sd_handle *handle, uint32_t start)
+{
+	int res;
+	uint32_t argument, options;
+	struct sd_resp resp;
+
+	res = card_sts_resp(handle, &resp.cardStatus);
+	if (res != SD_OK)
+		return res;
+
+	argument = start;
+
+	options = SD_CMDR_RSP_TYPE_R1_5_6 << SD_CMDR_RSP_TYPE_S |
+		  SD4_EMMC_TOP_CMD_CRC_EN_MASK |
+		  SD4_EMMC_TOP_CMD_CCHK_EN_MASK;
+
+	/* send cmd and parse result */
+	res = send_cmd(handle, SD_CMD_ERASE_GROUP_START,
+		       argument, options, &resp);
+
+	if (res != SD_OK)
+		return res;
+
+	return res;
+}
+
+int sd_cmd36(struct sd_handle *handle, uint32_t end)
+{
+	int res;
+	uint32_t argument, options;
+	struct sd_resp resp;
+
+	res = card_sts_resp(handle, &resp.cardStatus);
+	if (res != SD_OK)
+		return res;
+
+	argument = end;
+
+	options = SD_CMDR_RSP_TYPE_R1_5_6 << SD_CMDR_RSP_TYPE_S |
+		  SD4_EMMC_TOP_CMD_CRC_EN_MASK |
+		  SD4_EMMC_TOP_CMD_CCHK_EN_MASK;
+
+	/* send cmd and parse result */
+	res = send_cmd(handle, SD_CMD_ERASE_GROUP_END,
+		       argument, options, &resp);
+
+	if (res != SD_OK)
+		return res;
+
+	return res;
+}
+
+int sd_cmd38(struct sd_handle *handle)
+{
+	int res;
+	uint32_t argument, options;
+	struct sd_resp resp;
+
+	res = card_sts_resp(handle, &resp.cardStatus);
+	if (res != SD_OK)
+		return res;
+
+	argument = 0;
+
+	options = (SD_CMDR_RSP_TYPE_R1b_5b << SD_CMDR_RSP_TYPE_S) |
+		  SD4_EMMC_TOP_CMD_CRC_EN_MASK |
+		  SD4_EMMC_TOP_CMD_CCHK_EN_MASK;
+
+	/* send cmd and parse result */
+	res = send_cmd(handle, SD_CMD_ERASE, argument, options, &resp);
+
+	if (res != SD_OK)
+		return res;
+
+	return res;
+}
+#endif
+
+#ifdef INCLUDE_EMMC_DRIVER_WRITE_CODE
+
+int sd_cmd24(struct sd_handle *handle,
+	     uint32_t addr, uint32_t len, uint8_t *buffer)
+{
+	int res;
+	uint32_t argument, options, ntry;
+	struct sd_resp resp;
+
+	ntry = 0;
+	do {
+		res = sd_cmd13(handle, &resp.cardStatus);
+		if (res != SD_OK) {
+			EMMC_TRACE(
+				"cmd 13 failed before cmd24: rca 0x%0x, return %d, response 0x%0x\n",
+				handle->device->ctrl.rca, res, &resp.cardStatus);
+			return res;
+		}
+
+		if (resp.cardStatus & 0x100)
+			break;
+
+		EMMC_TRACE("cmd13 rsp:0x%08x before cmd24\n", resp.cardStatus);
+
+		if (ntry > handle->device->cfg.retryLimit) {
+			EMMC_TRACE("cmd13 retry reach limit %d\n",
+				   handle->device->cfg.retryLimit);
+			return SD_CMD_TIMEOUT;
+		}
+
+		ntry++;
+		EMMC_TRACE("cmd13 retry %d\n", ntry);
+
+		SD_US_DELAY(1000);
+
+	} while (1);
+
+	data_xfer_setup(handle, buffer, len, SD_XFER_HOST_TO_CARD);
+
+	argument = addr;
+
+	options = SD_CMDR_RSP_TYPE_R1_5_6 << SD_CMDR_RSP_TYPE_S |
+		  SD4_EMMC_TOP_CMD_DPS_MASK | SD4_EMMC_TOP_CMD_CRC_EN_MASK |
+		  SD4_EMMC_TOP_CMD_CCHK_EN_MASK;
+
+	/* send cmd and parse result */
+	res = send_cmd(handle, SD_CMD_WRITE_BLOCK, argument, options, &resp);
+
+	if (res != SD_OK)
+		return res;
+
+	res = process_data_xfer(handle, buffer, addr, len, SD_XFER_HOST_TO_CARD);
+
+	return res;
+}
+
+int sd_cmd25(struct sd_handle *handle,
+	     uint32_t addr, uint32_t len, uint8_t *buffer)
+{
+	int res = SD_OK;
+	uint32_t argument, options, ntry;
+	struct sd_resp resp;
+
+	ntry = 0;
+	do {
+		res = sd_cmd13(handle, &resp.cardStatus);
+		if (res != SD_OK) {
+			EMMC_TRACE(
+				"cmd 13 failed before cmd25: rca 0x%0x, return %d, response 0x%0x\n",
+				handle->device->ctrl.rca, res, &resp.cardStatus);
+			return res;
+		}
+
+		if (resp.cardStatus & 0x100)
+			break;
+
+		EMMC_TRACE("cmd13 rsp:0x%08x before cmd25\n", resp.cardStatus);
+
+		if (ntry > handle->device->cfg.retryLimit) {
+			EMMC_TRACE("cmd13 retry reach limit %d\n",
+				   handle->device->cfg.retryLimit);
+			return SD_CMD_TIMEOUT;
+		}
+
+		ntry++;
+		EMMC_TRACE("cmd13 retry %d\n", ntry);
+
+		SD_US_DELAY(1000);
+	} while (1);
+
+	data_xfer_setup(handle, buffer, len, SD_XFER_HOST_TO_CARD);
+
+	argument = addr;
+
+	options = SD_CMDR_RSP_TYPE_R1_5_6 << SD_CMDR_RSP_TYPE_S |
+		  SD4_EMMC_TOP_CMD_DPS_MASK | SD4_EMMC_TOP_CMD_MSBS_MASK |
+		  SD4_EMMC_TOP_CMD_CCHK_EN_MASK | SD4_EMMC_TOP_CMD_BCEN_MASK |
+		  SD4_EMMC_TOP_CMD_CRC_EN_MASK |
+		  BIT(SD4_EMMC_TOP_CMD_ACMDEN_SHIFT);
+
+	/* send cmd and parse result */
+	res = send_cmd(handle, SD_CMD_WRITE_MULTIPLE_BLOCK,
+		       argument, options, &resp);
+
+	if (res != SD_OK)
+		return res;
+
+	res = process_data_xfer(handle, buffer, addr, len, SD_XFER_HOST_TO_CARD);
+
+	return res;
+}
+#endif /* INCLUDE_EMMC_DRIVER_WRITE_CODE */
+
+int mmc_cmd6(struct sd_handle *handle, uint32_t argument)
+{
+	int res;
+	uint32_t options;
+	struct sd_resp resp;
+
+	options = SD_CMDR_RSP_TYPE_R1b_5b << SD_CMDR_RSP_TYPE_S |
+		  SD4_EMMC_TOP_CMD_CCHK_EN_MASK | SD4_EMMC_TOP_CMD_CRC_EN_MASK;
+
+	EMMC_TRACE("Sending CMD6 with argument 0x%X\n", argument);
+
+	/* send cmd and parse result */
+	res = send_cmd(handle, SD_ACMD_SET_BUS_WIDTH, argument, options, &resp);
+
+	/*
+	 * For R1b type response:
+	 * controller issues a COMMAND COMPLETE interrupt when the R1
+	 * response is received,
+	 * then controller monitors DAT0 for busy status,
+	 * controller issues a TRANSFER COMPLETE interrupt when busy signal
+	 * clears.
+	 */
+	wait_for_event(handle,
+		       SD4_EMMC_TOP_INTR_TXDONE_MASK | SD_ERR_INTERRUPTS,
+		       handle->device->cfg.wfe_retry);
+
+	if (res == SD_OK) {
+		/* Check result of Cmd6 using Cmd13 to check card status */
+
+		/* Check status using Cmd13 */
+		res = sd_cmd13(handle, &resp.cardStatus);
+
+		if (res == SD_OK) {
+			/* Check bit 7 (SWITCH_ERROR) in card status */
+			if ((resp.cardStatus & 0x80) != 0) {
+				EMMC_TRACE("cmd6 failed: SWITCH_ERROR\n");
+				res = SD_FAIL;
+			}
+		} else {
+			EMMC_TRACE("cmd13 failed after cmd6: ");
+			EMMC_TRACE("rca 0x%0x, return %d, response 0x%0x\n",
+				handle->device->ctrl.rca, res, resp.cardStatus);
+		}
+	}
+
+	return res;
+}
+
+
+#define SD_BUSY_CHECK		0x00203000
+#define DAT0_LEVEL_MASK		0x100000	/* bit20 in PSTATE */
+#define DEV_BUSY_TIMEOUT	600000		/* 60 Sec : 600000 * 100us */
+
+int send_cmd(struct sd_handle *handle, uint32_t cmdIndex, uint32_t argument,
+	     uint32_t options, struct sd_resp *resp)
+{
+	int status = SD_OK;
+	uint32_t event = 0, present, timeout = 0, retry = 0, mask = 3;
+	uint32_t temp_resp[4];
+
+	if (handle == NULL) {
+		EMMC_TRACE("Invalid handle for cmd%d\n", cmdIndex);
+		return SD_INVALID_HANDLE;
+	}
+
+	mask = (SD_BUSY_CHECK & options) ? 3 : 1;
+
+RETRY_WRITE_CMD:
+	do {
+		/* Make sure it is ok to send command */
+		present =
+		    chal_sd_get_present_status((CHAL_HANDLE *) handle->device);
+		timeout++;
+
+		if (present & mask)
+			SD_US_DELAY(1000);
+		else
+			break;
+
+	} while (timeout < EMMC_BUSY_CMD_TIMEOUT_MS);
+
+	if (timeout >= EMMC_BUSY_CMD_TIMEOUT_MS) {
+		status = SD_CMD_MISSING;
+		EMMC_TRACE("cmd%d timedout %dms\n", cmdIndex, timeout);
+	}
+
+	/* Reset both DAT and CMD line if only of them are stuck */
+	if (present & mask)
+		check_error(handle, SD4_EMMC_TOP_INTR_CMDERROR_MASK);
+
+	handle->device->ctrl.argReg = argument;
+	chal_sd_send_cmd((CHAL_HANDLE *) handle->device, cmdIndex,
+			 handle->device->ctrl.argReg, options);
+
+	handle->device->ctrl.cmdIndex = cmdIndex;
+
+	event = wait_for_event(handle,
+			       (SD4_EMMC_TOP_INTR_CMDDONE_MASK |
+				SD_ERR_INTERRUPTS),
+			       handle->device->cfg.wfe_retry);
+
+	if (handle->device->ctrl.cmdStatus == SD_CMD_MISSING) {
+		retry++;
+
+		if (retry >= handle->device->cfg.retryLimit) {
+			status = SD_CMD_MISSING;
+			EMMC_TRACE("cmd%d retry reaches the limit %d\n",
+				   cmdIndex, retry);
+		} else {
+			/* reset both DAT & CMD line if one of them is stuck */
+			present = chal_sd_get_present_status((CHAL_HANDLE *)
+							     handle->device);
+
+			if (present & mask)
+				check_error(handle,
+					    SD4_EMMC_TOP_INTR_CMDERROR_MASK);
+
+			EMMC_TRACE("cmd%d retry %d PSTATE[0x%08x]\n",
+				   cmdIndex, retry,
+				   chal_sd_get_present_status((CHAL_HANDLE *)
+							      handle->device));
+			goto RETRY_WRITE_CMD;
+		}
+	}
+
+	if (handle->device->ctrl.cmdStatus == SD_OK) {
+		if (resp != NULL) {
+			status =
+			    chal_sd_get_response((CHAL_HANDLE *) handle->device,
+						 temp_resp);
+			process_cmd_response(handle,
+					     handle->device->ctrl.cmdIndex,
+					     temp_resp[0], temp_resp[1],
+					     temp_resp[2], temp_resp[3], resp);
+		}
+
+		/* Check Device busy after CMD */
+		if ((cmdIndex == 5) || (cmdIndex == 6) || (cmdIndex == 7) ||
+		    (cmdIndex == 28) || (cmdIndex == 29) || (cmdIndex == 38)) {
+
+			timeout = 0;
+			do {
+				present =
+				    chal_sd_get_present_status((CHAL_HANDLE *)
+							       handle->device);
+
+				timeout++;
+
+				/* Dat[0]:bit20 low means device busy */
+				if ((present & DAT0_LEVEL_MASK) == 0) {
+					EMMC_TRACE("Device busy: ");
+					EMMC_TRACE(
+					  "cmd%d arg:0x%08x: PSTATE[0x%08x]\n",
+					  cmdIndex, argument, present);
+					SD_US_DELAY(100);
+				} else {
+					break;
+				}
+			} while (timeout < DEV_BUSY_TIMEOUT);
+		}
+	} else if (handle->device->ctrl.cmdStatus &&
+		   handle->device->ctrl.cmdStatus != SD_CMD_MISSING) {
+		retry++;
+		status = check_error(handle, handle->device->ctrl.cmdStatus);
+
+		EMMC_TRACE(
+			"cmd%d error: cmdStatus:0x%08x error_status:0x%08x\n",
+			cmdIndex, handle->device->ctrl.cmdStatus, status);
+
+		if ((handle->device->ctrl.cmdIndex == 1) ||
+		    (handle->device->ctrl.cmdIndex == 5)) {
+			status = event;
+		} else if ((handle->device->ctrl.cmdIndex == 7) ||
+			   (handle->device->ctrl.cmdIndex == 41)) {
+			status = event;
+		} else if ((status == SD_ERROR_RECOVERABLE) &&
+			   (retry < handle->device->cfg.retryLimit)) {
+			EMMC_TRACE("cmd%d recoverable error ", cmdIndex);
+			EMMC_TRACE("retry %d PSTATE[0x%08x].\n", retry,
+				   chal_sd_get_present_status((CHAL_HANDLE *)
+							      handle->device));
+			goto RETRY_WRITE_CMD;
+		} else {
+			EMMC_TRACE("cmd%d retry reaches the limit %d\n",
+				   cmdIndex, retry);
+			status = event;
+		}
+	}
+
+	handle->device->ctrl.blkReg = 0;
+	/* clear error status for next command */
+	handle->device->ctrl.cmdStatus = 0;
+
+	return status;
+}
diff --git a/drivers/brcm/emmc/emmc_pboot_hal_memory_drv.c b/drivers/brcm/emmc/emmc_pboot_hal_memory_drv.c
new file mode 100644
index 0000000..68f93e7
--- /dev/null
+++ b/drivers/brcm/emmc/emmc_pboot_hal_memory_drv.c
@@ -0,0 +1,621 @@
+/*
+ * Copyright (c) 2016 - 2020, Broadcom
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <string.h>
+
+#include <emmc_api.h>
+#include <cmn_plat_util.h>
+
+#define MAX_CMD_RETRY      10
+
+#if EMMC_USE_DMA
+#define USE_DMA 1
+#else
+#define USE_DMA 0
+#endif
+
+struct emmc_global_buffer emmc_global_buf;
+struct emmc_global_buffer *emmc_global_buf_ptr = &emmc_global_buf;
+
+struct emmc_global_vars emmc_global_vars;
+struct emmc_global_vars *emmc_global_vars_ptr = &emmc_global_vars;
+
+static struct sd_handle *sdio_gethandle(void);
+static uint32_t sdio_idle(struct sd_handle *p_sdhandle);
+
+static uint32_t sdio_read(struct sd_handle *p_sdhandle,
+			  uintptr_t mem_addr,
+			  uintptr_t storage_addr,
+			  size_t storage_size,
+			  size_t bytes_to_read);
+
+#ifdef INCLUDE_EMMC_DRIVER_WRITE_CODE
+static uint32_t sdio_write(struct sd_handle *p_sdhandle,
+			   uintptr_t mem_addr,
+			   uintptr_t data_addr,
+			   size_t bytes_to_write);
+#endif
+
+static struct sd_handle *sdio_init(void);
+static int32_t bcm_emmc_card_ready_state(struct sd_handle *p_sdhandle);
+
+static void init_globals(void)
+{
+	memset((void *)emmc_global_buf_ptr, 0, sizeof(*emmc_global_buf_ptr));
+	memset((void *)emmc_global_vars_ptr, 0, sizeof(*emmc_global_vars_ptr));
+}
+
+/*
+ * This function is used to change partition
+ */
+uint32_t emmc_partition_select(uint32_t partition)
+{
+	int rc;
+	struct sd_handle *sd_handle = sdio_gethandle();
+
+	if (sd_handle->device == 0) {
+		EMMC_TRACE("eMMC init is not done");
+		return 0;
+	}
+
+	switch (partition) {
+	case EMMC_BOOT_PARTITION1:
+		rc = set_boot_config(sd_handle,
+				     SDIO_HW_EMMC_EXT_CSD_BOOT_ACC_BOOT1);
+		EMMC_TRACE(
+		     "Change to Boot Partition 1 result:%d  (0 means SD_OK)\n",
+		     rc);
+		break;
+
+	case EMMC_BOOT_PARTITION2:
+		rc = set_boot_config(sd_handle,
+				     SDIO_HW_EMMC_EXT_CSD_BOOT_ACC_BOOT2);
+		EMMC_TRACE(
+		     "Change to Boot Partition 2 result:%d  (0 means SD_OK)\n",
+		     rc);
+		break;
+
+	case EMMC_USE_CURRENT_PARTITION:
+		rc = SD_OK;
+		EMMC_TRACE("Stay on current partition");
+		break;
+
+	case EMMC_USER_AREA:
+	default:
+		rc = set_boot_config(sd_handle,
+				     SDIO_HW_EMMC_EXT_CSD_BOOT_ACC_USER);
+		EMMC_TRACE("Change to User area result:%d  (0 means SD_OK)\n",
+			   rc);
+		break;
+
+	}
+	return (rc == SD_OK);
+}
+
+/*
+ * Initialize emmc controller for eMMC
+ * Returns 0 on fail condition
+ */
+uint32_t bcm_emmc_init(bool card_rdy_only)
+{
+	struct sd_handle *p_sdhandle;
+	uint32_t result = 0;
+
+	EMMC_TRACE("Enter emmc_controller_init()\n");
+
+	/* If eMMC is already initialized, skip init */
+	if (emmc_global_vars_ptr->init_done)
+		return 1;
+
+	init_globals();
+
+	p_sdhandle = sdio_init();
+
+	if (p_sdhandle == NULL) {
+		ERROR("eMMC init failed");
+		return result;
+	}
+
+	if (card_rdy_only) {
+		/* Put the card in Ready state, Not complete init */
+		result = bcm_emmc_card_ready_state(p_sdhandle);
+		return !result;
+	}
+
+	if (sdio_idle(p_sdhandle) == EMMC_BOOT_OK) {
+		set_config(p_sdhandle, SD_NORMAL_SPEED, MAX_CMD_RETRY, USE_DMA,
+			   SD_DMA_BOUNDARY_256K, EMMC_BLOCK_SIZE,
+			   EMMC_WFE_RETRY);
+
+		if (!select_blk_sz(p_sdhandle,
+				   p_sdhandle->device->cfg.blockSize)) {
+			emmc_global_vars_ptr->init_done = 1;
+			result = 1;
+		} else {
+			ERROR("Select Block Size failed\n");
+		}
+	} else {
+		ERROR("eMMC init failed");
+	}
+
+	/* Initialization is failed, so deinit HW setting */
+	if (result == 0)
+		emmc_deinit();
+
+	return result;
+}
+
+/*
+ * Function to de-init SDIO controller for eMMC
+ */
+void emmc_deinit(void)
+{
+	emmc_global_vars_ptr->init_done = 0;
+	emmc_global_vars_ptr->sdHandle.card = 0;
+	emmc_global_vars_ptr->sdHandle.device = 0;
+}
+
+/*
+ * Read eMMC memory
+ * Returns read_size
+ */
+uint32_t emmc_read(uintptr_t mem_addr, uintptr_t storage_addr,
+		   size_t storage_size, size_t bytes_to_read)
+{
+	struct sd_handle *sd_handle = sdio_gethandle();
+
+	if (sd_handle->device == 0) {
+		EMMC_TRACE("eMMC init is not done");
+		return 0;
+	}
+
+	return sdio_read(sdio_gethandle(), mem_addr, storage_addr,
+			 storage_size, bytes_to_read);
+}
+
+#ifdef INCLUDE_EMMC_DRIVER_ERASE_CODE
+#define EXT_CSD_ERASE_GRP_SIZE 224
+
+static int emmc_block_erase(uintptr_t mem_addr, size_t blocks)
+{
+	struct sd_handle *sd_handle = sdio_gethandle();
+
+	if (sd_handle->device == 0) {
+		ERROR("eMMC init is not done");
+		return -1;
+	}
+
+	return erase_card(sdio_gethandle(), mem_addr, blocks);
+}
+
+int emmc_erase(uintptr_t mem_addr, size_t num_of_blocks, uint32_t partition)
+{
+	int err = 0;
+	size_t block_count = 0, blocks = 0;
+	size_t erase_group = 0;
+
+	erase_group =
+	emmc_global_buf_ptr->u.Ext_CSD_storage[EXT_CSD_ERASE_GRP_SIZE]*1024;
+
+	INFO("eMMC Erase Group Size=0x%lx\n", erase_group);
+
+	emmc_partition_select(partition);
+
+	while (block_count < num_of_blocks) {
+		blocks = ((num_of_blocks - block_count) > erase_group) ?
+				  erase_group : (num_of_blocks - block_count);
+			err = emmc_block_erase(mem_addr + block_count, blocks);
+		if (err)
+			break;
+
+		block_count += blocks;
+	}
+
+	if (err == 0)
+		INFO("eMMC Erase of partition %d successful\n", partition);
+	else
+		ERROR("eMMC Erase of partition %d Failed(%i)\n", partition, err);
+
+	return err;
+}
+#endif
+
+#ifdef INCLUDE_EMMC_DRIVER_WRITE_CODE
+/*
+ * Write to eMMC memory
+ * Returns written_size
+ */
+uint32_t emmc_write(uintptr_t mem_addr, uintptr_t data_addr,
+		    size_t bytes_to_write)
+{
+	struct sd_handle *sd_handle = sdio_gethandle();
+
+	if (sd_handle->device == 0) {
+		EMMC_TRACE("eMMC init is not done");
+		return 0;
+	}
+
+	return sdio_write(sd_handle, mem_addr, data_addr, bytes_to_write);
+}
+#endif
+
+/*
+ * Send SDIO Cmd
+ * Return 0 for pass condition
+ */
+uint32_t send_sdio_cmd(uint32_t cmdIndex, uint32_t argument,
+		       uint32_t options, struct sd_resp *resp)
+{
+	struct sd_handle *sd_handle = sdio_gethandle();
+
+	if (sd_handle->device == 0) {
+		EMMC_TRACE("eMMC init is not done");
+		return 1;
+	}
+
+	return send_cmd(sd_handle, cmdIndex, argument, options, resp);
+}
+
+
+/*
+ * This function return SDIO handle
+ */
+struct sd_handle *sdio_gethandle(void)
+{
+	return &emmc_global_vars_ptr->sdHandle;
+}
+
+/*
+ * Initialize SDIO controller
+ */
+struct sd_handle *sdio_init(void)
+{
+	uint32_t SDIO_base;
+	struct sd_handle *p_sdhandle = &emmc_global_vars_ptr->sdHandle;
+
+	SDIO_base = EMMC_CTRL_REGS_BASE_ADDR;
+
+	if (SDIO_base == SDIO0_EMMCSDXC_SYSADDR)
+		EMMC_TRACE(" ---> for SDIO 0 Controller\n\n");
+
+	memset(p_sdhandle, 0, sizeof(struct sd_handle));
+
+	p_sdhandle->device = &emmc_global_vars_ptr->sdDevice;
+	p_sdhandle->card = &emmc_global_vars_ptr->sdCard;
+
+	memset(p_sdhandle->device, 0, sizeof(struct sd_dev));
+	memset(p_sdhandle->card, 0, sizeof(struct sd_card_info));
+
+	if (chal_sd_start((CHAL_HANDLE *) p_sdhandle->device,
+			  SD_PIO_MODE, SDIO_base, SDIO_base) != SD_OK)
+		return NULL;
+
+	set_config(p_sdhandle, SD_NORMAL_SPEED, MAX_CMD_RETRY, SD_DMA_OFF,
+		   SD_DMA_BOUNDARY_4K, EMMC_BLOCK_SIZE, EMMC_WFE_RETRY);
+
+	return &emmc_global_vars_ptr->sdHandle;
+}
+
+uint32_t sdio_idle(struct sd_handle *p_sdhandle)
+{
+	reset_card(p_sdhandle);
+
+	SD_US_DELAY(1000);
+
+	if (init_card(p_sdhandle, SD_CARD_DETECT_MMC) != SD_OK) {
+		reset_card(p_sdhandle);
+		reset_host_ctrl(p_sdhandle);
+		return EMMC_BOOT_NO_CARD;
+	}
+
+	return EMMC_BOOT_OK;
+}
+
+/*
+ * This function read eMMC
+ */
+uint32_t sdio_read(struct sd_handle *p_sdhandle,
+		   uintptr_t mem_addr,
+		   uintptr_t storage_addr,
+		   size_t storage_size, size_t bytes_to_read)
+{
+	uint32_t offset = 0, blockAddr, readLen = 0, rdCount;
+	uint32_t remSize, manual_copy_size;
+	uint8_t *outputBuf = (uint8_t *) storage_addr;
+	const size_t blockSize = p_sdhandle->device->cfg.blockSize;
+
+	VERBOSE("EMMC READ: dst=0x%lx, src=0x%lx, size=0x%lx\n",
+			storage_addr, mem_addr, bytes_to_read);
+
+	if (storage_size < bytes_to_read)
+		/* Don't have sufficient storage to complete the operation */
+		return 0;
+
+	/* Range check non high capacity memory */
+	if ((p_sdhandle->device->ctrl.ocr & SD_CARD_HIGH_CAPACITY) == 0) {
+		if (mem_addr > 0x80000000)
+			return 0;
+	}
+
+	/* High capacity card use block address mode */
+	if (p_sdhandle->device->ctrl.ocr & SD_CARD_HIGH_CAPACITY) {
+		blockAddr = (uint32_t) (mem_addr / blockSize);
+		offset = (uint32_t) (mem_addr - (blockAddr * blockSize));
+	} else {
+		blockAddr = (uint32_t) (mem_addr / blockSize) * blockSize;
+		offset = (uint32_t) (mem_addr - blockAddr);
+	}
+
+	remSize = bytes_to_read;
+
+	rdCount = 0;
+
+	/* Process first unaligned block of MAX_READ_LENGTH */
+	if (offset > 0) {
+		if (!read_block(p_sdhandle, emmc_global_buf_ptr->u.tempbuf,
+				blockAddr, SD_MAX_READ_LENGTH)) {
+
+			if (remSize < (blockSize - offset)) {
+				rdCount += remSize;
+				manual_copy_size = remSize;
+				remSize = 0;	/* read is done */
+			} else {
+				remSize -= (blockSize - offset);
+				rdCount += (blockSize - offset);
+				manual_copy_size = blockSize - offset;
+			}
+
+			/* Check for overflow */
+			if (manual_copy_size > storage_size ||
+			    (((uintptr_t)outputBuf + manual_copy_size) >
+			     (storage_addr + storage_size))) {
+				ERROR("EMMC READ: Overflow 1\n");
+				return 0;
+			}
+
+			memcpy(outputBuf,
+			       (void *)((uintptr_t)
+				(emmc_global_buf_ptr->u.tempbuf + offset)),
+			       manual_copy_size);
+
+			/* Update Physical address */
+			outputBuf += manual_copy_size;
+
+			if (p_sdhandle->device->ctrl.ocr & SD_CARD_HIGH_CAPACITY)
+				blockAddr++;
+			else
+				blockAddr += blockSize;
+		} else {
+			return 0;
+		}
+	}
+
+	while (remSize >= blockSize) {
+
+		if (remSize >= SD_MAX_BLK_TRANSFER_LENGTH)
+			readLen = SD_MAX_BLK_TRANSFER_LENGTH;
+		else
+			readLen = (remSize / blockSize) * blockSize;
+
+		/* Check for overflow */
+		if ((rdCount + readLen) > storage_size ||
+		    (((uintptr_t) outputBuf + readLen) >
+		     (storage_addr + storage_size))) {
+			ERROR("EMMC READ: Overflow\n");
+			return 0;
+		}
+
+		if (!read_block(p_sdhandle, outputBuf, blockAddr, readLen)) {
+			if (p_sdhandle->device->ctrl.ocr & SD_CARD_HIGH_CAPACITY)
+				blockAddr += (readLen / blockSize);
+			else
+				blockAddr += readLen;
+
+			remSize -= readLen;
+			rdCount += readLen;
+
+			/* Update Physical address */
+			outputBuf += readLen;
+		} else {
+			return 0;
+		}
+	}
+
+	/* process the last unaligned block reading */
+	if (remSize > 0) {
+		if (!read_block(p_sdhandle, emmc_global_buf_ptr->u.tempbuf,
+				blockAddr, SD_MAX_READ_LENGTH)) {
+
+			rdCount += remSize;
+			/* Check for overflow */
+			if (rdCount > storage_size ||
+			    (((uintptr_t) outputBuf + remSize) >
+			     (storage_addr + storage_size))) {
+				ERROR("EMMC READ: Overflow\n");
+				return 0;
+			}
+
+			memcpy(outputBuf,
+				emmc_global_buf_ptr->u.tempbuf, remSize);
+
+			/* Update Physical address */
+			outputBuf += remSize;
+		} else {
+			rdCount = 0;
+		}
+	}
+
+	return rdCount;
+}
+
+#ifdef INCLUDE_EMMC_DRIVER_WRITE_CODE
+static uint32_t sdio_write(struct sd_handle *p_sdhandle, uintptr_t mem_addr,
+			   uintptr_t data_addr, size_t bytes_to_write)
+{
+
+	uint32_t offset, blockAddr, writeLen, wtCount = 0;
+	uint32_t remSize, manual_copy_size = 0;
+
+	uint8_t *inputBuf = (uint8_t *)data_addr;
+
+	/* range check non high capacity memory */
+	if ((p_sdhandle->device->ctrl.ocr & SD_CARD_HIGH_CAPACITY) == 0) {
+		if (mem_addr > 0x80000000)
+			return 0;
+	}
+
+	/* the high capacity card use block address mode */
+	if (p_sdhandle->device->ctrl.ocr & SD_CARD_HIGH_CAPACITY) {
+		blockAddr =
+		    (uint32_t)(mem_addr / p_sdhandle->device->cfg.blockSize);
+		offset =
+		    (uint32_t)(mem_addr -
+			       blockAddr * p_sdhandle->device->cfg.blockSize);
+	} else {
+		blockAddr =
+		    ((uint32_t)mem_addr / p_sdhandle->device->cfg.blockSize) *
+		    p_sdhandle->device->cfg.blockSize;
+		offset = (uint32_t) mem_addr - blockAddr;
+	}
+
+	remSize = bytes_to_write;
+
+	wtCount = 0;
+
+	/* process first unaligned block */
+	if (offset > 0) {
+		if (!read_block(p_sdhandle, emmc_global_buf_ptr->u.tempbuf,
+				blockAddr, p_sdhandle->device->cfg.blockSize)) {
+
+			if (remSize <
+			    (p_sdhandle->device->cfg.blockSize - offset))
+				manual_copy_size = remSize;
+			else
+				manual_copy_size =
+				    p_sdhandle->device->cfg.blockSize - offset;
+
+			memcpy((void *)((uintptr_t)
+				(emmc_global_buf_ptr->u.tempbuf + offset)),
+			       inputBuf,
+			       manual_copy_size);
+
+			/* Update Physical address */
+
+			if (!write_block(p_sdhandle,
+					 emmc_global_buf_ptr->u.tempbuf,
+					 blockAddr,
+					 p_sdhandle->device->cfg.blockSize)) {
+
+				if (remSize <
+				    (p_sdhandle->device->cfg.blockSize -
+				     offset)) {
+					wtCount += remSize;
+					manual_copy_size = remSize;
+					remSize = 0;	/* read is done */
+				} else {
+					remSize -=
+					    (p_sdhandle->device->cfg.blockSize -
+					     offset);
+					wtCount +=
+					    (p_sdhandle->device->cfg.blockSize -
+					     offset);
+					manual_copy_size =
+					    p_sdhandle->device->cfg.blockSize -
+					    offset;
+				}
+
+				inputBuf += manual_copy_size;
+
+				if (p_sdhandle->device->ctrl.ocr &
+				    SD_CARD_HIGH_CAPACITY)
+					blockAddr++;
+				else
+					blockAddr +=
+					    p_sdhandle->device->cfg.blockSize;
+			} else
+				return 0;
+		} else {
+			return 0;
+		}
+	}
+
+	/* process block writing */
+	while (remSize >= p_sdhandle->device->cfg.blockSize) {
+		if (remSize >= SD_MAX_READ_LENGTH) {
+			writeLen = SD_MAX_READ_LENGTH;
+		} else {
+			writeLen =
+			    (remSize / p_sdhandle->device->cfg.blockSize) *
+			     p_sdhandle->device->cfg.blockSize;
+		}
+
+		if (!write_block(p_sdhandle, inputBuf, blockAddr, writeLen)) {
+			if (p_sdhandle->device->ctrl.ocr & SD_CARD_HIGH_CAPACITY)
+				blockAddr +=
+				    (writeLen /
+				     p_sdhandle->device->cfg.blockSize);
+			else
+				blockAddr += writeLen;
+
+			remSize -= writeLen;
+			wtCount += writeLen;
+			inputBuf += writeLen;
+		} else {
+			return 0;
+		}
+	}
+
+	/* process the last unaligned block reading */
+	if (remSize > 0) {
+		if (!read_block(p_sdhandle,
+				emmc_global_buf_ptr->u.tempbuf,
+				blockAddr, p_sdhandle->device->cfg.blockSize)) {
+
+			memcpy(emmc_global_buf_ptr->u.tempbuf,
+			       inputBuf, remSize);
+
+			/* Update Physical address */
+
+			if (!write_block(p_sdhandle,
+					 emmc_global_buf_ptr->u.tempbuf,
+					 blockAddr,
+					 p_sdhandle->device->cfg.blockSize)) {
+				wtCount += remSize;
+				inputBuf += remSize;
+			} else {
+				return 0;
+			}
+		} else {
+			wtCount = 0;
+		}
+	}
+
+	return wtCount;
+}
+#endif
+
+/*
+ * Function to put the card in Ready state by sending CMD0 and CMD1
+ */
+static int32_t bcm_emmc_card_ready_state(struct sd_handle *p_sdhandle)
+{
+	int32_t result = 0;
+	uint32_t argument = MMC_CMD_IDLE_RESET_ARG; /* Exit from Boot mode */
+
+	if (p_sdhandle) {
+		send_sdio_cmd(SD_CMD_GO_IDLE_STATE, argument, 0, NULL);
+
+		result = reset_card(p_sdhandle);
+		if (result != SD_OK) {
+			EMMC_TRACE("eMMC Reset error\n");
+			return SD_RESET_ERROR;
+		}
+		SD_US_DELAY(2000);
+		result = mmc_cmd1(p_sdhandle);
+	}
+
+	return result;
+}