Merge branch 'master' of git://git.denx.de/u-boot-spi

.mailmap

@@ -13,7 +13,11 @@ Andreas Bießmann <andreas.devel@googlemail.com>
 Aneesh V <aneesh@ti.com>
 Dirk Behme <dirk.behme@googlemail.com>
 Fabio Estevam <fabio.estevam@freescale.com>
-Jagannadha Sutradharudu Teki <402jagan@gmail.com>
+Jagan Teki <402jagan@gmail.com>
+Jagan Teki <jaganna@gmail.com>
+Jagan Teki <jaganna@xilinx.com>
+Jagan Teki <jagannadh.teki@gmail.com>
+Jagan Teki <jagannadha.sutradharudu-teki@xilinx.com>
 Markus Klotzbuecher <mk@denx.de>
 Prabhakar Kushwaha <prabhakar@freescale.com>
 Rajeshwari Shinde <rajeshwari.s@samsung.com>

board/freescale/mx7dsabresd/mx7dsabresd.c

@@ -44,6 +44,9 @@ DECLARE_GLOBAL_DATA_PTR;
 #define LCD_PAD_CTRL    (PAD_CTL_HYS | PAD_CTL_PUS_PU100KOHM | \
 	PAD_CTL_DSE_3P3V_49OHM)
 
+#define QSPI_PAD_CTRL	\
+	(PAD_CTL_DSE_3P3V_49OHM | PAD_CTL_PUE | PAD_CTL_PUS_PU47KOHM)
+
 #ifdef CONFIG_SYS_I2C_MXC
 #define PC MUX_PAD_CTRL(I2C_PAD_CTRL)
 /* I2C1 for PMIC */
@@ -455,6 +458,29 @@ int board_phy_config(struct phy_device *phydev)
 }
 #endif
 
+#ifdef CONFIG_FSL_QSPI
+static iomux_v3_cfg_t const quadspi_pads[] = {
+	MX7D_PAD_EPDC_DATA00__QSPI_A_DATA0 | MUX_PAD_CTRL(QSPI_PAD_CTRL),
+	MX7D_PAD_EPDC_DATA01__QSPI_A_DATA1 | MUX_PAD_CTRL(QSPI_PAD_CTRL),
+	MX7D_PAD_EPDC_DATA02__QSPI_A_DATA2 | MUX_PAD_CTRL(QSPI_PAD_CTRL),
+	MX7D_PAD_EPDC_DATA03__QSPI_A_DATA3 | MUX_PAD_CTRL(QSPI_PAD_CTRL),
+	MX7D_PAD_EPDC_DATA05__QSPI_A_SCLK  | MUX_PAD_CTRL(QSPI_PAD_CTRL),
+	MX7D_PAD_EPDC_DATA06__QSPI_A_SS0_B | MUX_PAD_CTRL(QSPI_PAD_CTRL),
+};
+
+int board_qspi_init(void)
+{
+	/* Set the iomux */
+	imx_iomux_v3_setup_multiple_pads(quadspi_pads,
+					 ARRAY_SIZE(quadspi_pads));
+
+	/* Set the clock */
+	set_clk_qspi();
+
+	return 0;
+}
+#endif
+
 int board_early_init_f(void)
 {
 	setup_iomux_uart();
@@ -481,6 +507,10 @@ int board_init(void)
 	setup_lcd();
 #endif
 
+#ifdef CONFIG_FSL_QSPI
+	board_qspi_init();
+#endif
+
 	return 0;
 }
 

drivers/mtd/spi/Makefile

@@ -12,11 +12,7 @@ obj-$(CONFIG_SPL_SPI_LOAD)	+= spi_spl_load.o
 obj-$(CONFIG_SPL_SPI_BOOT)	+= fsl_espi_spl.o
 endif
 
-#ifndef CONFIG_DM_SPI
-obj-$(CONFIG_SPI_FLASH) += sf_probe.o
-#endif
-obj-$(CONFIG_CMD_SF) += sf.o
-obj-$(CONFIG_SPI_FLASH) += sf_ops.o sf_params.o
+obj-$(CONFIG_SPI_FLASH) += sf_probe.o spi_flash.o sf_params.o sf.o
 obj-$(CONFIG_SPI_FLASH_DATAFLASH) += sf_dataflash.o
 obj-$(CONFIG_SPI_FLASH_MTD) += sf_mtd.o
 obj-$(CONFIG_SPI_FLASH_SANDBOX) += sandbox.o

drivers/mtd/spi/sf_internal.h

@@ -44,13 +44,10 @@ enum {
 #endif
 	SECT_32K	= 1 << 1,
 	E_FSR		= 1 << 2,
-	SST_BP		= 1 << 3,
-	SST_WP		= 1 << 4,
-	WR_QPP		= 1 << 5,
+	SST_WR		= 1 << 3,
+	WR_QPP		= 1 << 4,
 };
 
-#define SST_WR		(SST_BP | SST_WP)
-
 enum spi_nor_option_flags {
 	SNOR_F_SST_WR		= (1 << 0),
 	SNOR_F_USE_FSR		= (1 << 1),
@@ -66,6 +63,7 @@ enum spi_nor_option_flags {
 #define SPI_FLASH_CFI_MFR_MACRONIX	0xc2
 #define SPI_FLASH_CFI_MFR_SST		0xbf
 #define SPI_FLASH_CFI_MFR_WINBOND	0xef
+#define SPI_FLASH_CFI_MFR_ATMEL		0x1f
 
 /* Erase commands */
 #define CMD_ERASE_4K			0x20
@@ -171,12 +169,6 @@ int spi_flash_cmd_write(struct spi_slave *spi, const u8 *cmd, size_t cmd_len,
 /* Flash erase(sectors) operation, support all possible erase commands */
 int spi_flash_cmd_erase_ops(struct spi_flash *flash, u32 offset, size_t len);
 
-/* Read the status register */
-int spi_flash_cmd_read_status(struct spi_flash *flash, u8 *rs);
-
-/* Program the status register */
-int spi_flash_cmd_write_status(struct spi_flash *flash, u8 ws);
-
 /* Lock stmicro spi flash region */
 int stm_lock(struct spi_flash *flash, u32 ofs, size_t len);
 
@@ -186,12 +178,6 @@ int stm_unlock(struct spi_flash *flash, u32 ofs, size_t len);
 /* Check if a stmicro spi flash region is completely locked */
 int stm_is_locked(struct spi_flash *flash, u32 ofs, size_t len);
 
-/* Read the config register */
-int spi_flash_cmd_read_config(struct spi_flash *flash, u8 *rc);
-
-/* Program the config register */
-int spi_flash_cmd_write_config(struct spi_flash *flash, u8 wc);
-
 /* Enable writing on the SPI flash */
 static inline int spi_flash_cmd_write_enable(struct spi_flash *flash)
 {
@@ -204,12 +190,6 @@ static inline int spi_flash_cmd_write_disable(struct spi_flash *flash)
 	return spi_flash_cmd(flash->spi, CMD_WRITE_DISABLE, NULL, 0);
 }
 
-/*
- * Send the read status command to the device and wait for the wip
- * (write-in-progress) bit to clear itself.
- */
-int spi_flash_cmd_wait_ready(struct spi_flash *flash, unsigned long timeout);
-
 /*
  * Used for spi_flash write operation
  * - SPI claim
@@ -245,4 +225,16 @@ int spi_flash_mtd_register(struct spi_flash *flash);
 void spi_flash_mtd_unregister(void);
 #endif
 
+/**
+ * spi_flash_scan - scan the 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_flash *flash);
+
 #endif /* _SF_INTERNAL_H_ */

drivers/mtd/spi/sf_probe.c

@@ -11,327 +11,21 @@
 #include <common.h>
 #include <dm.h>
 #include <errno.h>
-#include <fdtdec.h>
 #include <malloc.h>
-#include <mapmem.h>
 #include <spi.h>
 #include <spi_flash.h>
-#include <asm/io.h>
 
 #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
-
-static int spi_flash_validate_params(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];
-
-	/* 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;
-	}
-
-	/* 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;
-
-	/* 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
-	int ret = spi_flash_read_bank(flash, idcode[0]);
-	if (ret < 0)
-		return ret;
-#endif
-
-	/* 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
-
-	return 0;
-}
-
-#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) */
-
 /**
  * spi_flash_probe_slave() - Probe for a SPI flash device on a bus
  *
- * @spi: Bus to probe
  * @flashp: Pointer to place to put flash info, which may be NULL if the
  * space should be allocated
  */
-int spi_flash_probe_slave(struct spi_slave *spi, struct spi_flash *flash)
+static int spi_flash_probe_slave(struct spi_flash *flash)
 {
-	u8 idcode[5];
+	struct spi_slave *spi = flash->spi;
 	int ret;
 
 	/* Setup spi_slave */
@@ -347,59 +41,12 @@ int spi_flash_probe_slave(struct spi_slave *spi, struct spi_flash *flash)
 		return ret;
 	}
 
-	/* Read the ID codes */
-	ret = spi_flash_cmd(spi, CMD_READ_ID, idcode, sizeof(idcode));
+	ret = spi_flash_scan(flash);
 	if (ret) {
-		printf("SF: Failed to get idcodes\n");
-		goto err_read_id;
-	}
-
-#ifdef DEBUG
-	printf("SF: Got idcodes\n");
-	print_buffer(0, idcode, 1, sizeof(idcode), 0);
-#endif
-
-	if (spi_flash_validate_params(spi, idcode, flash)) {
 		ret = -EINVAL;
 		goto err_read_id;
 	}
 
-	/* 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)) {
-		if (spi_flash_set_qeb(flash, idcode[0])) {
-			debug("SF: Fail to set QEB for %02x\n", idcode[0]);
-			ret = -EINVAL;
-			goto err_read_id;
-		}
-	}
-
-#if CONFIG_IS_ENABLED(OF_CONTROL)
-	if (spi_flash_decode_fdt(gd->fdt_blob, flash)) {
-		debug("SF: FDT decode error\n");
-		ret = -EINVAL;
-		goto err_read_id;
-	}
-#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
 #ifdef CONFIG_SPI_FLASH_MTD
 	ret = spi_flash_mtd_register(flash);
 #endif
@@ -410,7 +57,7 @@ err_read_id:
 }
 
 #ifndef CONFIG_DM_SPI_FLASH
-struct spi_flash *spi_flash_probe_tail(struct spi_slave *bus)
+static struct spi_flash *spi_flash_probe_tail(struct spi_slave *bus)
 {
 	struct spi_flash *flash;
 
@@ -421,7 +68,8 @@ struct spi_flash *spi_flash_probe_tail(struct spi_slave *bus)
 		return NULL;
 	}
 
-	if (spi_flash_probe_slave(bus, flash)) {
+	flash->spi = bus;
+	if (spi_flash_probe_slave(flash)) {
 		spi_free_slave(bus);
 		free(flash);
 		return NULL;
@@ -473,7 +121,7 @@ static int spi_flash_std_read(struct udevice *dev, u32 offset, size_t len,
 	return spi_flash_cmd_read_ops(flash, offset, len, buf);
 }
 
-int spi_flash_std_write(struct udevice *dev, u32 offset, size_t len,
+static int spi_flash_std_write(struct udevice *dev, u32 offset, size_t len,
 			const void *buf)
 {
 	struct spi_flash *flash = dev_get_uclass_priv(dev);
@@ -490,14 +138,14 @@ int spi_flash_std_write(struct udevice *dev, u32 offset, size_t len,
 	return spi_flash_cmd_write_ops(flash, offset, len, buf);
 }
 
-int spi_flash_std_erase(struct udevice *dev, u32 offset, size_t len)
+static int spi_flash_std_erase(struct udevice *dev, u32 offset, size_t len)
 {
 	struct spi_flash *flash = dev_get_uclass_priv(dev);
 
 	return spi_flash_cmd_erase_ops(flash, offset, len);
 }
 
-int spi_flash_std_probe(struct udevice *dev)
+static int spi_flash_std_probe(struct udevice *dev)
 {
 	struct spi_slave *slave = dev_get_parent_priv(dev);
 	struct dm_spi_slave_platdata *plat = dev_get_parent_platdata(dev);
@@ -505,8 +153,9 @@ int spi_flash_std_probe(struct udevice *dev)
 
 	flash = dev_get_uclass_priv(dev);
 	flash->dev = dev;
+	flash->spi = slave;
 	debug("%s: slave=%p, cs=%d\n", __func__, slave, plat->cs);
-	return spi_flash_probe_slave(slave, flash);
+	return spi_flash_probe_slave(flash);
 }
 
 static const struct dm_spi_flash_ops spi_flash_std_ops = {

drivers/mtd/spi/sf_ops.c → drivers/mtd/spi/spi_flash.c

@@ -1,9 +1,10 @@
 /*
- * SPI flash operations
+ * SPI Flash Core
  *
- * Copyright (C) 2008 Atmel Corporation
- * Copyright (C) 2010 Reinhard Meyer, EMK Elektronik
+ * Copyright (C) 2015 Jagan Teki <jteki@openedev.com>
  * Copyright (C) 2013 Jagannadha Sutradharudu Teki, Xilinx Inc.
+ * Copyright (C) 2010 Reinhard Meyer, EMK Elektronik
+ * Copyright (C) 2008 Atmel Corporation
  *
  * SPDX-License-Identifier:	GPL-2.0+
  */
@@ -11,14 +12,15 @@
 #include <common.h>
 #include <errno.h>
 #include <malloc.h>
+#include <mapmem.h>
 #include <spi.h>
 #include <spi_flash.h>
-#include <watchdog.h>
-#include <linux/compiler.h>
 #include <linux/log2.h>
 
 #include "sf_internal.h"
 
+DECLARE_GLOBAL_DATA_PTR;
+
 static void spi_flash_addr(u32 addr, u8 *cmd)
 {
 	/* cmd[0] is actual command */
@@ -27,7 +29,17 @@ static void spi_flash_addr(u32 addr, u8 *cmd)
 	cmd[3] = addr >> 0;
 }
 
-int spi_flash_cmd_read_status(struct spi_flash *flash, u8 *rs)
+/* 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,
+};
+
+static int read_sr(struct spi_flash *flash, u8 *rs)
 {
 	int ret;
 	u8 cmd;
@@ -56,7 +68,7 @@ static int read_fsr(struct spi_flash *flash, u8 *fsr)
 	return 0;
 }
 
-int spi_flash_cmd_write_status(struct spi_flash *flash, u8 ws)
+static int write_sr(struct spi_flash *flash, u8 ws)
 {
 	u8 cmd;
 	int ret;
@@ -72,7 +84,7 @@ int spi_flash_cmd_write_status(struct spi_flash *flash, u8 ws)
 }
 
 #if defined(CONFIG_SPI_FLASH_SPANSION) || defined(CONFIG_SPI_FLASH_WINBOND)
-int spi_flash_cmd_read_config(struct spi_flash *flash, u8 *rc)
+static int read_cr(struct spi_flash *flash, u8 *rc)
 {
 	int ret;
 	u8 cmd;
@@ -87,13 +99,13 @@ int spi_flash_cmd_read_config(struct spi_flash *flash, u8 *rc)
 	return 0;
 }
 
-int spi_flash_cmd_write_config(struct spi_flash *flash, u8 wc)
+static int write_cr(struct spi_flash *flash, u8 wc)
 {
 	u8 data[2];
 	u8 cmd;
 	int ret;
 
-	ret = spi_flash_cmd_read_status(flash, &data[0]);
+	ret = read_sr(flash, &data[0]);
 	if (ret < 0)
 		return ret;
 
@@ -110,7 +122,7 @@ int spi_flash_cmd_write_config(struct spi_flash *flash, u8 wc)
 #endif
 
 #ifdef CONFIG_SPI_FLASH_BAR
-static int spi_flash_write_bank(struct spi_flash *flash, u32 offset)
+static int spi_flash_write_bar(struct spi_flash *flash, u32 offset)
 {
 	u8 cmd, bank_sel;
 	int ret;
@@ -130,10 +142,40 @@ bar_end:
 	flash->bank_curr = bank_sel;
 	return flash->bank_curr;
 }
+
+static int spi_flash_read_bar(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;
+		break;
+	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
 
 #ifdef CONFIG_SF_DUAL_FLASH
-static void spi_flash_dual_flash(struct spi_flash *flash, u32 *addr)
+static void spi_flash_dual(struct spi_flash *flash, u32 *addr)
 {
 	switch (flash->dual_flash) {
 	case SF_DUAL_STACKED_FLASH:
@@ -159,7 +201,7 @@ static int spi_flash_sr_ready(struct spi_flash *flash)
 	u8 sr;
 	int ret;
 
-	ret = spi_flash_cmd_read_status(flash, &sr);
+	ret = read_sr(flash, &sr);
 	if (ret < 0)
 		return ret;
 
@@ -196,7 +238,8 @@ static int spi_flash_ready(struct spi_flash *flash)
 	return sr && fsr;
 }
 
-int spi_flash_cmd_wait_ready(struct spi_flash *flash, unsigned long timeout)
+static int spi_flash_cmd_wait_ready(struct spi_flash *flash,
+					unsigned long timeout)
 {
 	int timebase, ret;
 
@@ -282,10 +325,10 @@ int spi_flash_cmd_erase_ops(struct spi_flash *flash, u32 offset, size_t len)
 
 #ifdef CONFIG_SF_DUAL_FLASH
 		if (flash->dual_flash > SF_SINGLE_FLASH)
-			spi_flash_dual_flash(flash, &erase_addr);
+			spi_flash_dual(flash, &erase_addr);
 #endif
 #ifdef CONFIG_SPI_FLASH_BAR
-		ret = spi_flash_write_bank(flash, erase_addr);
+		ret = spi_flash_write_bar(flash, erase_addr);
 		if (ret < 0)
 			return ret;
 #endif
@@ -332,10 +375,10 @@ int spi_flash_cmd_write_ops(struct spi_flash *flash, u32 offset,
 
 #ifdef CONFIG_SF_DUAL_FLASH
 		if (flash->dual_flash > SF_SINGLE_FLASH)
-			spi_flash_dual_flash(flash, &write_addr);
+			spi_flash_dual(flash, &write_addr);
 #endif
 #ifdef CONFIG_SPI_FLASH_BAR
-		ret = spi_flash_write_bank(flash, write_addr);
+		ret = spi_flash_write_bar(flash, write_addr);
 		if (ret < 0)
 			return ret;
 #endif
@@ -427,10 +470,10 @@ int spi_flash_cmd_read_ops(struct spi_flash *flash, u32 offset,
 
 #ifdef CONFIG_SF_DUAL_FLASH
 		if (flash->dual_flash > SF_SINGLE_FLASH)
-			spi_flash_dual_flash(flash, &read_addr);
+			spi_flash_dual(flash, &read_addr);
 #endif
 #ifdef CONFIG_SPI_FLASH_BAR
-		ret = spi_flash_write_bank(flash, read_addr);
+		ret = spi_flash_write_bar(flash, read_addr);
 		if (ret < 0)
 			return ret;
 		bank_sel = flash->bank_curr;
@@ -628,7 +671,7 @@ int stm_is_locked(struct spi_flash *flash, u32 ofs, size_t len)
 	int status;
 	u8 sr;
 
-	status = spi_flash_cmd_read_status(flash, &sr);
+	status = read_sr(flash, &sr);
 	if (status < 0)
 		return status;
 
@@ -665,7 +708,7 @@ int stm_lock(struct spi_flash *flash, u32 ofs, size_t len)
 	u8 shift = ffs(mask) - 1, pow, val;
 	int ret;
 
-	ret = spi_flash_cmd_read_status(flash, &status_old);
+	ret = read_sr(flash, &status_old);
 	if (ret < 0)
 		return ret;
 
@@ -702,7 +745,7 @@ int stm_lock(struct spi_flash *flash, u32 ofs, size_t len)
 	if ((status_new & mask) <= (status_old & mask))
 		return -EINVAL;
 
-	spi_flash_cmd_write_status(flash, status_new);
+	write_sr(flash, status_new);
 
 	return 0;
 }
@@ -719,7 +762,7 @@ int stm_unlock(struct spi_flash *flash, u32 ofs, size_t len)
 	u8 shift = ffs(mask) - 1, pow, val;
 	int ret;
 
-	ret = spi_flash_cmd_read_status(flash, &status_old);
+	ret = read_sr(flash, &status_old);
 	if (ret < 0)
 		return ret;
 
@@ -752,8 +795,321 @@ int stm_unlock(struct spi_flash *flash, u32 ofs, size_t len)
 	if ((status_new & mask) >= (status_old & mask))
 		return -EINVAL;
 
-	spi_flash_cmd_write_status(flash, status_new);
+	write_sr(flash, status_new);
 
 	return 0;
 }
 #endif
+
+
+#ifdef CONFIG_SPI_FLASH_MACRONIX
+static int spi_flash_set_qeb_mxic(struct spi_flash *flash)
+{
+	u8 qeb_status;
+	int ret;
+
+	ret = read_sr(flash, &qeb_status);
+	if (ret < 0)
+		return ret;
+
+	if (qeb_status & STATUS_QEB_MXIC) {
+		debug("SF: mxic: QEB is already set\n");
+	} else {
+		ret = write_sr(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 = read_cr(flash, &qeb_status);
+	if (ret < 0)
+		return ret;
+
+	if (qeb_status & STATUS_QEB_WINSPAN) {
+		debug("SF: winspan: QEB is already set\n");
+	} else {
+		ret = write_cr(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;
+	}
+}
+
+#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_flash *flash)
+{
+	struct spi_slave *spi = flash->spi;
+	const struct spi_flash_params *params;
+	u16 jedec, ext_jedec;
+	u8 idcode[5];
+	u8 cmd;
+	int ret;
+
+	/* Read the ID codes */
+	ret = spi_flash_cmd(spi, CMD_READ_ID, idcode, sizeof(idcode));
+	if (ret) {
+		printf("SF: Failed to get idcodes\n");
+		return -EINVAL;
+	}
+
+#ifdef DEBUG
+	printf("SF: Got idcodes\n");
+	print_buffer(0, idcode, 1, sizeof(idcode), 0);
+#endif
+
+	jedec = idcode[1] << 8 | idcode[2];
+	ext_jedec = idcode[3] << 8 | idcode[4];
+
+	/* 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 (idcode[0] == SPI_FLASH_CFI_MFR_ATMEL ||
+	    idcode[0] == SPI_FLASH_CFI_MFR_MACRONIX ||
+	    idcode[0] == SPI_FLASH_CFI_MFR_SST)
+		write_sr(flash, 0);
+
+	/* Assign spi data */
+	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_bar(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;
+}

drivers/spi/Kconfig

@@ -140,7 +140,7 @@ config XILINX_SPI
 
 config ZYNQ_SPI
 	bool "Zynq SPI driver"
-	depends on ARCH_ZYNQ || TARGET_XILINX_ZYNQMP
+	depends on ARCH_ZYNQ || ARCH_ZYNQMP
 	help
 	  Enable the Zynq SPI driver. This driver can be used to
 	  access the SPI NOR flash on platforms embedding this Zynq

drivers/spi/spi-uclass.c

@@ -378,6 +378,8 @@ int spi_slave_ofdata_to_platdata(const void *blob, int node,
 		mode |= SPI_CPHA;
 	if (fdtdec_get_bool(blob, node, "spi-cs-high"))
 		mode |= SPI_CS_HIGH;
+	if (fdtdec_get_bool(blob, node, "spi-3wire"))
+		mode |= SPI_3WIRE;
 	if (fdtdec_get_bool(blob, node, "spi-half-duplex"))
 		mode |= SPI_PREAMBLE;
 	plat->mode = mode;

drivers/spi/ti_qspi.c

@@ -293,7 +293,7 @@ int spi_xfer(struct spi_slave *slave, unsigned int bitlen, const void *dout,
 	qslave->cmd = 0;
 	qslave->cmd |= QSPI_WLEN(8);
 	qslave->cmd |= QSPI_EN_CS(slave->cs);
-	if (flags & SPI_3WIRE)
+	if (qslave->mode & SPI_3WIRE)
 		qslave->cmd |= QSPI_3_PIN;
 	qslave->cmd |= 0xfff;
 

drivers/spi/xilinx_spi.c

@@ -287,7 +287,8 @@ static const struct dm_spi_ops xilinx_spi_ops = {
 };
 
 static const struct udevice_id xilinx_spi_ids[] = {
-	{ .compatible = "xlnx,xilinx-spi" },
+	{ .compatible = "xlnx,xps-spi-2.00.a" },
+	{ .compatible = "xlnx,xps-spi-2.00.b" },
 	{ }
 };
 

drivers/spi/zynq_spi.c

@@ -313,6 +313,7 @@ static const struct dm_spi_ops zynq_spi_ops = {
 
 static const struct udevice_id zynq_spi_ids[] = {
 	{ .compatible = "xlnx,zynq-spi-r1p6" },
+	{ .compatible = "cdns,spi-r1p6" },
 	{ }
 };
 

include/configs/mx7dsabresd.h

@@ -236,4 +236,19 @@
 #define CONFIG_VIDEO_BMP_LOGO
 #endif
 
+#ifdef CONFIG_FSL_QSPI
+#define CONFIG_CMD_SF
+#define CONFIG_SPI_FLASH
+#define CONFIG_SPI_FLASH_MACRONIX
+#define CONFIG_SPI_FLASH_BAR
+#define CONFIG_SF_DEFAULT_BUS		0
+#define CONFIG_SF_DEFAULT_CS		0
+#define CONFIG_SF_DEFAULT_SPEED		40000000
+#define CONFIG_SF_DEFAULT_MODE		SPI_MODE_0
+#define FSL_QSPI_FLASH_NUM		1
+#define FSL_QSPI_FLASH_SIZE		SZ_64M
+#define QSPI0_BASE_ADDR			QSPI1_IPS_BASE_ADDR
+#define QSPI0_AMBA_BASE			QSPI0_ARB_BASE_ADDR
+#endif
+
 #endif	/* __CONFIG_H */