[U-Boot] [PATCH v7 02/34] sf: Move spi_flash_scan code to sf_ops

[Jagan Teki <jteki@openedev.com>]

Intension is that sf_ops should deals all spi_flash
related stuff and sf_probe (which should renamed future)
should be an interface layer for spi_flash versus spi drivers.

sf_ops => spi_flash interface
sf_probe => interface layer vs spi_flash(sf_probe) to spi drivers

Signed-off-by: Jagan Teki <jteki@openedev.com>
---
 drivers/mtd/spi/sf_internal.h |  14 ++
 drivers/mtd/spi/sf_ops.c      | 343 ++++++++++++++++++++++++++++++++++++++++++
 drivers/mtd/spi/sf_probe.c    | 342 -----------------------------------------
 3 files changed, 357 insertions(+), 342 deletions(-)

diff --git a/drivers/mtd/spi/sf_internal.h b/drivers/mtd/spi/sf_internal.h
index 85c8a89..f3eb6f3 100644
--- a/drivers/mtd/spi/sf_internal.h
+++ b/drivers/mtd/spi/sf_internal.h
@@ -245,4 +245,18 @@ int spi_flash_mtd_register(struct spi_flash *flash);
 void spi_flash_mtd_unregister(void);
 #endif
 
+/**
+ * spi_flash_scan - scan the SPI FLASH
+ * @spi:	the spi slave structure
+ * @idcode:	idcode of spi flash
+ * @flash:	the spi flash structure
+ *
+ * The drivers can use this fuction to scan the SPI FLASH.
+ * In the scanning, it will try to get all the necessary information to
+ * fill the spi_flash{}.
+ *
+ * Return: 0 for success, others for failure.
+ */
+int spi_flash_scan(struct spi_slave *spi, u8 *idcode, struct spi_flash *flash);
+
 #endif /* _SF_INTERNAL_H_ */
diff --git a/drivers/mtd/spi/sf_ops.c b/drivers/mtd/spi/sf_ops.c
index 3a56d7f..306db8f 100644
--- a/drivers/mtd/spi/sf_ops.c
+++ b/drivers/mtd/spi/sf_ops.c
@@ -11,6 +11,7 @@
 #include <common.h>
 #include <errno.h>
 #include <malloc.h>
+#include <mapmem.h>
 #include <spi.h>
 #include <spi_flash.h>
 #include <watchdog.h>
@@ -19,6 +20,8 @@
 
 #include "sf_internal.h"
 
+DECLARE_GLOBAL_DATA_PTR;
+
 static void spi_flash_addr(u32 addr, u8 *cmd)
 {
 	/* cmd[0] is actual command */
@@ -757,3 +760,343 @@ int stm_unlock(struct spi_flash *flash, u32 ofs, size_t len)
 	return 0;
 }
 #endif
+
+
+/* Read commands array */
+static u8 spi_read_cmds_array[] = {
+	CMD_READ_ARRAY_SLOW,
+	CMD_READ_ARRAY_FAST,
+	CMD_READ_DUAL_OUTPUT_FAST,
+	CMD_READ_DUAL_IO_FAST,
+	CMD_READ_QUAD_OUTPUT_FAST,
+	CMD_READ_QUAD_IO_FAST,
+};
+
+#ifdef CONFIG_SPI_FLASH_MACRONIX
+static int spi_flash_set_qeb_mxic(struct spi_flash *flash)
+{
+	u8 qeb_status;
+	int ret;
+
+	ret = spi_flash_cmd_read_status(flash, &qeb_status);
+	if (ret < 0)
+		return ret;
+
+	if (qeb_status & STATUS_QEB_MXIC) {
+		debug("SF: mxic: QEB is already set\n");
+	} else {
+		ret = spi_flash_cmd_write_status(flash, STATUS_QEB_MXIC);
+		if (ret < 0)
+			return ret;
+	}
+
+	return ret;
+}
+#endif
+
+#if defined(CONFIG_SPI_FLASH_SPANSION) || defined(CONFIG_SPI_FLASH_WINBOND)
+static int spi_flash_set_qeb_winspan(struct spi_flash *flash)
+{
+	u8 qeb_status;
+	int ret;
+
+	ret = spi_flash_cmd_read_config(flash, &qeb_status);
+	if (ret < 0)
+		return ret;
+
+	if (qeb_status & STATUS_QEB_WINSPAN) {
+		debug("SF: winspan: QEB is already set\n");
+	} else {
+		ret = spi_flash_cmd_write_config(flash, STATUS_QEB_WINSPAN);
+		if (ret < 0)
+			return ret;
+	}
+
+	return ret;
+}
+#endif
+
+static int spi_flash_set_qeb(struct spi_flash *flash, u8 idcode0)
+{
+	switch (idcode0) {
+#ifdef CONFIG_SPI_FLASH_MACRONIX
+	case SPI_FLASH_CFI_MFR_MACRONIX:
+		return spi_flash_set_qeb_mxic(flash);
+#endif
+#if defined(CONFIG_SPI_FLASH_SPANSION) || defined(CONFIG_SPI_FLASH_WINBOND)
+	case SPI_FLASH_CFI_MFR_SPANSION:
+	case SPI_FLASH_CFI_MFR_WINBOND:
+		return spi_flash_set_qeb_winspan(flash);
+#endif
+#ifdef CONFIG_SPI_FLASH_STMICRO
+	case SPI_FLASH_CFI_MFR_STMICRO:
+		debug("SF: QEB is volatile for %02x flash\n", idcode0);
+		return 0;
+#endif
+	default:
+		printf("SF: Need set QEB func for %02x flash\n", idcode0);
+		return -1;
+	}
+}
+
+#ifdef CONFIG_SPI_FLASH_BAR
+static int spi_flash_read_bank(struct spi_flash *flash, u8 idcode0)
+{
+	u8 curr_bank = 0;
+	int ret;
+
+	if (flash->size <= SPI_FLASH_16MB_BOUN)
+		goto bank_end;
+
+	switch (idcode0) {
+	case SPI_FLASH_CFI_MFR_SPANSION:
+		flash->bank_read_cmd = CMD_BANKADDR_BRRD;
+		flash->bank_write_cmd = CMD_BANKADDR_BRWR;
+	default:
+		flash->bank_read_cmd = CMD_EXTNADDR_RDEAR;
+		flash->bank_write_cmd = CMD_EXTNADDR_WREAR;
+	}
+
+	ret = spi_flash_read_common(flash, &flash->bank_read_cmd, 1,
+				    &curr_bank, 1);
+	if (ret) {
+		debug("SF: fail to read bank addr register\n");
+		return ret;
+	}
+
+bank_end:
+	flash->bank_curr = curr_bank;
+	return 0;
+}
+#endif
+
+#if CONFIG_IS_ENABLED(OF_CONTROL)
+int spi_flash_decode_fdt(const void *blob, struct spi_flash *flash)
+{
+	fdt_addr_t addr;
+	fdt_size_t size;
+	int node;
+
+	/* If there is no node, do nothing */
+	node = fdtdec_next_compatible(blob, 0, COMPAT_GENERIC_SPI_FLASH);
+	if (node < 0)
+		return 0;
+
+	addr = fdtdec_get_addr_size(blob, node, "memory-map", &size);
+	if (addr == FDT_ADDR_T_NONE) {
+		debug("%s: Cannot decode address\n", __func__);
+		return 0;
+	}
+
+	if (flash->size != size) {
+		debug("%s: Memory map must cover entire device\n", __func__);
+		return -1;
+	}
+	flash->memory_map = map_sysmem(addr, size);
+
+	return 0;
+}
+#endif /* CONFIG_IS_ENABLED(OF_CONTROL) */
+
+int spi_flash_scan(struct spi_slave *spi, u8 *idcode, struct spi_flash *flash)
+{
+	const struct spi_flash_params *params;
+	u8 cmd;
+	u16 jedec = idcode[1] << 8 | idcode[2];
+	u16 ext_jedec = idcode[3] << 8 | idcode[4];
+	int ret;
+
+	/* Validate params from spi_flash_params table */
+	params = spi_flash_params_table;
+	for (; params->name != NULL; params++) {
+		if ((params->jedec >> 16) == idcode[0]) {
+			if ((params->jedec & 0xFFFF) == jedec) {
+				if (params->ext_jedec == 0)
+					break;
+				else if (params->ext_jedec == ext_jedec)
+					break;
+			}
+		}
+	}
+
+	if (!params->name) {
+		printf("SF: Unsupported flash IDs: ");
+		printf("manuf %02x, jedec %04x, ext_jedec %04x\n",
+		       idcode[0], jedec, ext_jedec);
+		return -EPROTONOSUPPORT;
+	}
+
+	/* Flash powers up read-only, so clear BP# bits */
+#if defined(CONFIG_SPI_FLASH_ATMEL) || \
+	defined(CONFIG_SPI_FLASH_MACRONIX) || \
+	defined(CONFIG_SPI_FLASH_SST)
+		spi_flash_cmd_write_status(flash, 0);
+#endif
+
+	/* Assign spi data */
+	flash->spi = spi;
+	flash->name = params->name;
+	flash->memory_map = spi->memory_map;
+	flash->dual_flash = flash->spi->option;
+
+	/* Assign spi flash flags */
+	if (params->flags & SST_WR)
+		flash->flags |= SNOR_F_SST_WR;
+
+	/* Assign spi_flash ops */
+#ifndef CONFIG_DM_SPI_FLASH
+	flash->write = spi_flash_cmd_write_ops;
+#if defined(CONFIG_SPI_FLASH_SST)
+	if (flash->flags & SNOR_F_SST_WR) {
+		if (flash->spi->op_mode_tx & SPI_OPM_TX_BP)
+			flash->write = sst_write_bp;
+		else
+			flash->write = sst_write_wp;
+	}
+#endif
+	flash->erase = spi_flash_cmd_erase_ops;
+	flash->read = spi_flash_cmd_read_ops;
+#endif
+
+	/* lock hooks are flash specific - assign them based on idcode0 */
+	switch (idcode[0]) {
+#if defined(CONFIG_SPI_FLASH_STMICRO) || defined(CONFIG_SPI_FLASH_SST)
+	case SPI_FLASH_CFI_MFR_STMICRO:
+	case SPI_FLASH_CFI_MFR_SST:
+		flash->flash_lock = stm_lock;
+		flash->flash_unlock = stm_unlock;
+		flash->flash_is_locked = stm_is_locked;
+#endif
+		break;
+	default:
+		debug("SF: Lock ops not supported for %02x flash\n", idcode[0]);
+	}
+
+	/* Compute the flash size */
+	flash->shift = (flash->dual_flash & SF_DUAL_PARALLEL_FLASH) ? 1 : 0;
+	/*
+	 * The Spansion S25FL032P and S25FL064P have 256b pages, yet use the
+	 * 0x4d00 Extended JEDEC code. The rest of the Spansion flashes with
+	 * the 0x4d00 Extended JEDEC code have 512b pages. All of the others
+	 * have 256b pages.
+	 */
+	if (ext_jedec == 0x4d00) {
+		if ((jedec == 0x0215) || (jedec == 0x216))
+			flash->page_size = 256;
+		else
+			flash->page_size = 512;
+	} else {
+		flash->page_size = 256;
+	}
+	flash->page_size <<= flash->shift;
+	flash->sector_size = params->sector_size << flash->shift;
+	flash->size = flash->sector_size * params->nr_sectors << flash->shift;
+#ifdef CONFIG_SF_DUAL_FLASH
+	if (flash->dual_flash & SF_DUAL_STACKED_FLASH)
+		flash->size <<= 1;
+#endif
+
+	/* Compute erase sector and command */
+	if (params->flags & SECT_4K) {
+		flash->erase_cmd = CMD_ERASE_4K;
+		flash->erase_size = 4096 << flash->shift;
+	} else if (params->flags & SECT_32K) {
+		flash->erase_cmd = CMD_ERASE_32K;
+		flash->erase_size = 32768 << flash->shift;
+	} else {
+		flash->erase_cmd = CMD_ERASE_64K;
+		flash->erase_size = flash->sector_size;
+	}
+
+	/* Now erase size becomes valid sector size */
+	flash->sector_size = flash->erase_size;
+
+	/* Look for the fastest read cmd */
+	cmd = fls(params->e_rd_cmd & flash->spi->op_mode_rx);
+	if (cmd) {
+		cmd = spi_read_cmds_array[cmd - 1];
+		flash->read_cmd = cmd;
+	} else {
+		/* Go for default supported read cmd */
+		flash->read_cmd = CMD_READ_ARRAY_FAST;
+	}
+
+	/* Not require to look for fastest only two write cmds yet */
+	if (params->flags & WR_QPP && flash->spi->op_mode_tx & SPI_OPM_TX_QPP)
+		flash->write_cmd = CMD_QUAD_PAGE_PROGRAM;
+	else
+		/* Go for default supported write cmd */
+		flash->write_cmd = CMD_PAGE_PROGRAM;
+
+	/* Set the quad enable bit - only for quad commands */
+	if ((flash->read_cmd == CMD_READ_QUAD_OUTPUT_FAST) ||
+	    (flash->read_cmd == CMD_READ_QUAD_IO_FAST) ||
+	    (flash->write_cmd == CMD_QUAD_PAGE_PROGRAM)) {
+		ret = spi_flash_set_qeb(flash, idcode[0]);
+		if (ret) {
+			debug("SF: Fail to set QEB for %02x\n", idcode[0]);
+			return -EINVAL;
+		}
+	}
+
+	/* Read dummy_byte: dummy byte is determined based on the
+	 * dummy cycles of a particular command.
+	 * Fast commands - dummy_byte = dummy_cycles/8
+	 * I/O commands- dummy_byte = (dummy_cycles * no.of lines)/8
+	 * For I/O commands except cmd[0] everything goes on no.of lines
+	 * based on particular command but incase of fast commands except
+	 * data all go on single line irrespective of command.
+	 */
+	switch (flash->read_cmd) {
+	case CMD_READ_QUAD_IO_FAST:
+		flash->dummy_byte = 2;
+		break;
+	case CMD_READ_ARRAY_SLOW:
+		flash->dummy_byte = 0;
+		break;
+	default:
+		flash->dummy_byte = 1;
+	}
+
+#ifdef CONFIG_SPI_FLASH_STMICRO
+	if (params->flags & E_FSR)
+		flash->flags |= SNOR_F_USE_FSR;
+#endif
+
+	/* Configure the BAR - discover bank cmds and read current bank */
+#ifdef CONFIG_SPI_FLASH_BAR
+	ret = spi_flash_read_bank(flash, idcode[0]);
+	if (ret < 0)
+		return ret;
+#endif
+
+#if CONFIG_IS_ENABLED(OF_CONTROL)
+	ret = spi_flash_decode_fdt(gd->fdt_blob, flash);
+	if (ret) {
+		debug("SF: FDT decode error\n");
+		return -EINVAL;
+	}
+#endif
+
+#ifndef CONFIG_SPL_BUILD
+	printf("SF: Detected %s with page size ", flash->name);
+	print_size(flash->page_size, ", erase size ");
+	print_size(flash->erase_size, ", total ");
+	print_size(flash->size, "");
+	if (flash->memory_map)
+		printf(", mapped at %p", flash->memory_map);
+	puts("\n");
+#endif
+
+#ifndef CONFIG_SPI_FLASH_BAR
+	if (((flash->dual_flash == SF_SINGLE_FLASH) &&
+	     (flash->size > SPI_FLASH_16MB_BOUN)) ||
+	     ((flash->dual_flash > SF_SINGLE_FLASH) &&
+	     (flash->size > SPI_FLASH_16MB_BOUN << 1))) {
+		puts("SF: Warning - Only lower 16MiB accessible,");
+		puts(" Full access #define CONFIG_SPI_FLASH_BAR\n");
+	}
+#endif
+
+	return ret;
+}
diff --git a/drivers/mtd/spi/sf_probe.c b/drivers/mtd/spi/sf_probe.c
index 0e20088..994559d 100644
--- a/drivers/mtd/spi/sf_probe.c
+++ b/drivers/mtd/spi/sf_probe.c
@@ -20,348 +20,6 @@
 
 #include "sf_internal.h"
 
-DECLARE_GLOBAL_DATA_PTR;
-
-/* Read commands array */
-static u8 spi_read_cmds_array[] = {
-	CMD_READ_ARRAY_SLOW,
-	CMD_READ_ARRAY_FAST,
-	CMD_READ_DUAL_OUTPUT_FAST,
-	CMD_READ_DUAL_IO_FAST,
-	CMD_READ_QUAD_OUTPUT_FAST,
-	CMD_READ_QUAD_IO_FAST,
-};
-
-#ifdef CONFIG_SPI_FLASH_MACRONIX
-static int spi_flash_set_qeb_mxic(struct spi_flash *flash)
-{
-	u8 qeb_status;
-	int ret;
-
-	ret = spi_flash_cmd_read_status(flash, &qeb_status);
-	if (ret < 0)
-		return ret;
-
-	if (qeb_status & STATUS_QEB_MXIC) {
-		debug("SF: mxic: QEB is already set\n");
-	} else {
-		ret = spi_flash_cmd_write_status(flash, STATUS_QEB_MXIC);
-		if (ret < 0)
-			return ret;
-	}
-
-	return ret;
-}
-#endif
-
-#if defined(CONFIG_SPI_FLASH_SPANSION) || defined(CONFIG_SPI_FLASH_WINBOND)
-static int spi_flash_set_qeb_winspan(struct spi_flash *flash)
-{
-	u8 qeb_status;
-	int ret;
-
-	ret = spi_flash_cmd_read_config(flash, &qeb_status);
-	if (ret < 0)
-		return ret;
-
-	if (qeb_status & STATUS_QEB_WINSPAN) {
-		debug("SF: winspan: QEB is already set\n");
-	} else {
-		ret = spi_flash_cmd_write_config(flash, STATUS_QEB_WINSPAN);
-		if (ret < 0)
-			return ret;
-	}
-
-	return ret;
-}
-#endif
-
-static int spi_flash_set_qeb(struct spi_flash *flash, u8 idcode0)
-{
-	switch (idcode0) {
-#ifdef CONFIG_SPI_FLASH_MACRONIX
-	case SPI_FLASH_CFI_MFR_MACRONIX:
-		return spi_flash_set_qeb_mxic(flash);
-#endif
-#if defined(CONFIG_SPI_FLASH_SPANSION) || defined(CONFIG_SPI_FLASH_WINBOND)
-	case SPI_FLASH_CFI_MFR_SPANSION:
-	case SPI_FLASH_CFI_MFR_WINBOND:
-		return spi_flash_set_qeb_winspan(flash);
-#endif
-#ifdef CONFIG_SPI_FLASH_STMICRO
-	case SPI_FLASH_CFI_MFR_STMICRO:
-		debug("SF: QEB is volatile for %02x flash\n", idcode0);
-		return 0;
-#endif
-	default:
-		printf("SF: Need set QEB func for %02x flash\n", idcode0);
-		return -1;
-	}
-}
-
-#ifdef CONFIG_SPI_FLASH_BAR
-static int spi_flash_read_bank(struct spi_flash *flash, u8 idcode0)
-{
-	u8 curr_bank = 0;
-	int ret;
-
-	if (flash->size <= SPI_FLASH_16MB_BOUN)
-		goto bank_end;
-
-	switch (idcode0) {
-	case SPI_FLASH_CFI_MFR_SPANSION:
-		flash->bank_read_cmd = CMD_BANKADDR_BRRD;
-		flash->bank_write_cmd = CMD_BANKADDR_BRWR;
-	default:
-		flash->bank_read_cmd = CMD_EXTNADDR_RDEAR;
-		flash->bank_write_cmd = CMD_EXTNADDR_WREAR;
-	}
-
-	ret = spi_flash_read_common(flash, &flash->bank_read_cmd, 1,
-				    &curr_bank, 1);
-	if (ret) {
-		debug("SF: fail to read bank addr register\n");
-		return ret;
-	}
-
-bank_end:
-	flash->bank_curr = curr_bank;
-	return 0;
-}
-#endif
-
-#if CONFIG_IS_ENABLED(OF_CONTROL)
-int spi_flash_decode_fdt(const void *blob, struct spi_flash *flash)
-{
-	fdt_addr_t addr;
-	fdt_size_t size;
-	int node;
-
-	/* If there is no node, do nothing */
-	node = fdtdec_next_compatible(blob, 0, COMPAT_GENERIC_SPI_FLASH);
-	if (node < 0)
-		return 0;
-
-	addr = fdtdec_get_addr_size(blob, node, "memory-map", &size);
-	if (addr == FDT_ADDR_T_NONE) {
-		debug("%s: Cannot decode address\n", __func__);
-		return 0;
-	}
-
-	if (flash->size != size) {
-		debug("%s: Memory map must cover entire device\n", __func__);
-		return -1;
-	}
-	flash->memory_map = map_sysmem(addr, size);
-
-	return 0;
-}
-#endif /* CONFIG_IS_ENABLED(OF_CONTROL) */
-
-static int spi_flash_scan(struct spi_slave *spi, u8 *idcode,
-				     struct spi_flash *flash)
-{
-	const struct spi_flash_params *params;
-	u8 cmd;
-	u16 jedec = idcode[1] << 8 | idcode[2];
-	u16 ext_jedec = idcode[3] << 8 | idcode[4];
-	int ret;
-
-	/* Validate params from spi_flash_params table */
-	params = spi_flash_params_table;
-	for (; params->name != NULL; params++) {
-		if ((params->jedec >> 16) == idcode[0]) {
-			if ((params->jedec & 0xFFFF) == jedec) {
-				if (params->ext_jedec == 0)
-					break;
-				else if (params->ext_jedec == ext_jedec)
-					break;
-			}
-		}
-	}
-
-	if (!params->name) {
-		printf("SF: Unsupported flash IDs: ");
-		printf("manuf %02x, jedec %04x, ext_jedec %04x\n",
-		       idcode[0], jedec, ext_jedec);
-		return -EPROTONOSUPPORT;
-	}
-
-	/* Flash powers up read-only, so clear BP# bits */
-#if defined(CONFIG_SPI_FLASH_ATMEL) || \
-	defined(CONFIG_SPI_FLASH_MACRONIX) || \
-	defined(CONFIG_SPI_FLASH_SST)
-		spi_flash_cmd_write_status(flash, 0);
-#endif
-
-	/* Assign spi data */
-	flash->spi = spi;
-	flash->name = params->name;
-	flash->memory_map = spi->memory_map;
-	flash->dual_flash = flash->spi->option;
-
-	/* Assign spi flash flags */
-	if (params->flags & SST_WR)
-		flash->flags |= SNOR_F_SST_WR;
-
-	/* Assign spi_flash ops */
-#ifndef CONFIG_DM_SPI_FLASH
-	flash->write = spi_flash_cmd_write_ops;
-#if defined(CONFIG_SPI_FLASH_SST)
-	if (flash->flags & SNOR_F_SST_WR) {
-		if (flash->spi->op_mode_tx & SPI_OPM_TX_BP)
-			flash->write = sst_write_bp;
-		else
-			flash->write = sst_write_wp;
-	}
-#endif
-	flash->erase = spi_flash_cmd_erase_ops;
-	flash->read = spi_flash_cmd_read_ops;
-#endif
-
-	/* lock hooks are flash specific - assign them based on idcode0 */
-	switch (idcode[0]) {
-#if defined(CONFIG_SPI_FLASH_STMICRO) || defined(CONFIG_SPI_FLASH_SST)
-	case SPI_FLASH_CFI_MFR_STMICRO:
-	case SPI_FLASH_CFI_MFR_SST:
-		flash->flash_lock = stm_lock;
-		flash->flash_unlock = stm_unlock;
-		flash->flash_is_locked = stm_is_locked;
-#endif
-		break;
-	default:
-		debug("SF: Lock ops not supported for %02x flash\n", idcode[0]);
-	}
-
-	/* Compute the flash size */
-	flash->shift = (flash->dual_flash & SF_DUAL_PARALLEL_FLASH) ? 1 : 0;
-	/*
-	 * The Spansion S25FL032P and S25FL064P have 256b pages, yet use the
-	 * 0x4d00 Extended JEDEC code. The rest of the Spansion flashes with
-	 * the 0x4d00 Extended JEDEC code have 512b pages. All of the others
-	 * have 256b pages.
-	 */
-	if (ext_jedec == 0x4d00) {
-		if ((jedec == 0x0215) || (jedec == 0x216))
-			flash->page_size = 256;
-		else
-			flash->page_size = 512;
-	} else {
-		flash->page_size = 256;
-	}
-	flash->page_size <<= flash->shift;
-	flash->sector_size = params->sector_size << flash->shift;
-	flash->size = flash->sector_size * params->nr_sectors << flash->shift;
-#ifdef CONFIG_SF_DUAL_FLASH
-	if (flash->dual_flash & SF_DUAL_STACKED_FLASH)
-		flash->size <<= 1;
-#endif
-
-	/* Compute erase sector and command */
-	if (params->flags & SECT_4K) {
-		flash->erase_cmd = CMD_ERASE_4K;
-		flash->erase_size = 4096 << flash->shift;
-	} else if (params->flags & SECT_32K) {
-		flash->erase_cmd = CMD_ERASE_32K;
-		flash->erase_size = 32768 << flash->shift;
-	} else {
-		flash->erase_cmd = CMD_ERASE_64K;
-		flash->erase_size = flash->sector_size;
-	}
-
-	/* Now erase size becomes valid sector size */
-	flash->sector_size = flash->erase_size;
-
-	/* Look for the fastest read cmd */
-	cmd = fls(params->e_rd_cmd & flash->spi->op_mode_rx);
-	if (cmd) {
-		cmd = spi_read_cmds_array[cmd - 1];
-		flash->read_cmd = cmd;
-	} else {
-		/* Go for default supported read cmd */
-		flash->read_cmd = CMD_READ_ARRAY_FAST;
-	}
-
-	/* Not require to look for fastest only two write cmds yet */
-	if (params->flags & WR_QPP && flash->spi->op_mode_tx & SPI_OPM_TX_QPP)
-		flash->write_cmd = CMD_QUAD_PAGE_PROGRAM;
-	else
-		/* Go for default supported write cmd */
-		flash->write_cmd = CMD_PAGE_PROGRAM;
-
-	/* Set the quad enable bit - only for quad commands */
-	if ((flash->read_cmd == CMD_READ_QUAD_OUTPUT_FAST) ||
-	    (flash->read_cmd == CMD_READ_QUAD_IO_FAST) ||
-	    (flash->write_cmd == CMD_QUAD_PAGE_PROGRAM)) {
-		ret = spi_flash_set_qeb(flash, idcode[0]);
-		if (ret) {
-			debug("SF: Fail to set QEB for %02x\n", idcode[0]);
-			return -EINVAL;
-		}
-	}
-
-	/* Read dummy_byte: dummy byte is determined based on the
-	 * dummy cycles of a particular command.
-	 * Fast commands - dummy_byte = dummy_cycles/8
-	 * I/O commands- dummy_byte = (dummy_cycles * no.of lines)/8
-	 * For I/O commands except cmd[0] everything goes on no.of lines
-	 * based on particular command but incase of fast commands except
-	 * data all go on single line irrespective of command.
-	 */
-	switch (flash->read_cmd) {
-	case CMD_READ_QUAD_IO_FAST:
-		flash->dummy_byte = 2;
-		break;
-	case CMD_READ_ARRAY_SLOW:
-		flash->dummy_byte = 0;
-		break;
-	default:
-		flash->dummy_byte = 1;
-	}
-
-#ifdef CONFIG_SPI_FLASH_STMICRO
-	if (params->flags & E_FSR)
-		flash->flags |= SNOR_F_USE_FSR;
-#endif
-
-	/* Configure the BAR - discover bank cmds and read current bank */
-#ifdef CONFIG_SPI_FLASH_BAR
-	ret = spi_flash_read_bank(flash, idcode[0]);
-	if (ret < 0)
-		return ret;
-#endif
-
-#if CONFIG_IS_ENABLED(OF_CONTROL)
-	ret = spi_flash_decode_fdt(gd->fdt_blob, flash);
-	if (ret) {
-		debug("SF: FDT decode error\n");
-		return -EINVAL;
-	}
-#endif
-
-#ifndef CONFIG_SPL_BUILD
-	printf("SF: Detected %s with page size ", flash->name);
-	print_size(flash->page_size, ", erase size ");
-	print_size(flash->erase_size, ", total ");
-	print_size(flash->size, "");
-	if (flash->memory_map)
-		printf(", mapped at %p", flash->memory_map);
-	puts("\n");
-#endif
-
-#ifndef CONFIG_SPI_FLASH_BAR
-	if (((flash->dual_flash == SF_SINGLE_FLASH) &&
-	     (flash->size > SPI_FLASH_16MB_BOUN)) ||
-	     ((flash->dual_flash > SF_SINGLE_FLASH) &&
-	     (flash->size > SPI_FLASH_16MB_BOUN << 1))) {
-		puts("SF: Warning - Only lower 16MiB accessible,");
-		puts(" Full access #define CONFIG_SPI_FLASH_BAR\n");
-	}
-#endif
-
-	return ret;
-}
-
 /**
  * spi_flash_probe_slave() - Probe for a SPI flash device on a bus
  *
-- 
1.9.1