+// SPDX-License-Identifier: GPL-2.0+
/*
* SPI flash probing
*
* Copyright (C) 2008 Atmel Corporation
* Copyright (C) 2010 Reinhard Meyer, EMK Elektronik
* Copyright (C) 2013 Jagannadha Sutradharudu Teki, Xilinx Inc.
- *
- * SPDX-License-Identifier: GPL-2.0+
*/
#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;
- }
-}
-
-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 ops */
-#ifndef CONFIG_DM_SPI_FLASH
- flash->write = spi_flash_cmd_write_ops;
-#if defined(CONFIG_SPI_FLASH_SST)
- if (params->flags & 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
-
- /* 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;
- }
-
- /* 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;
- }
-
- /* Poll cmd selection */
- flash->poll_cmd = CMD_READ_STATUS;
-#ifdef CONFIG_SPI_FLASH_STMICRO
- if (params->flags & E_FSR)
- flash->poll_cmd = CMD_FLAG_STATUS;
-#endif
-
- /* Configure the BAR - discover bank cmds and read current bank */
-#ifdef CONFIG_SPI_FLASH_BAR
- u8 curr_bank = 0;
- if (flash->size > SPI_FLASH_16MB_BOUN) {
- int ret;
-
- flash->bank_read_cmd = (idcode[0] == 0x01) ?
- CMD_BANKADDR_BRRD : CMD_EXTNADDR_RDEAR;
- flash->bank_write_cmd = (idcode[0] == 0x01) ?
- CMD_BANKADDR_BRWR : 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;
- }
- flash->bank_curr = curr_bank;
- } else {
- flash->bank_curr = curr_bank;
- }
-#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;
-}
-
-#ifdef CONFIG_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_OF_CONTROL */
-
-#ifdef CONFIG_SYS_SPI_ST_ENABLE_WP_PIN
-/* enable the W#/Vpp signal to disable writing to the status register */
-static int spi_enable_wp_pin(struct spi_flash *flash)
-{
- u8 status;
- int ret;
-
- ret = spi_flash_cmd_read_status(flash, &status);
- if (ret < 0)
- return ret;
-
- ret = spi_flash_cmd_write_status(flash, STATUS_SRWD);
- if (ret < 0)
- return ret;
-
- ret = spi_flash_cmd_write_disable(flash);
- if (ret < 0)
- return ret;
-
- return 0;
-}
-#else
-static int spi_enable_wp_pin(struct spi_flash *flash)
-{
- return 0;
-}
-#endif
-
/**
* 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 */
return 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");
- 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;
+ ret = spi_flash_scan(flash);
+ if (ret)
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;
- }
- }
-#ifdef CONFIG_OF_CONTROL
- if (spi_flash_decode_fdt(gd->fdt_blob, flash)) {
- debug("SF: FDT decode error\n");
- ret = -EINVAL;
- goto err_read_id;
- }
+#ifdef CONFIG_SPI_FLASH_MTD
+ ret = spi_flash_mtd_register(flash);
#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
- if (spi_enable_wp_pin(flash))
- puts("Enable WP pin failed\n");
-
- /* Release spi bus */
- spi_release_bus(spi);
-
- return 0;
err_read_id:
spi_release_bus(spi);
}
#ifndef CONFIG_DM_SPI_FLASH
-struct spi_flash *spi_flash_probe_tail(struct spi_slave *bus)
+struct spi_flash *spi_flash_probe(unsigned int busnum, unsigned int cs,
+ unsigned int max_hz, unsigned int spi_mode)
{
+ struct spi_slave *bus;
struct spi_flash *flash;
+ bus = spi_setup_slave(busnum, cs, max_hz, spi_mode);
+ if (!bus)
+ return NULL;
+
/* Allocate space if needed (not used by sf-uclass */
flash = calloc(1, sizeof(*flash));
if (!flash) {
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;
return flash;
}
-struct spi_flash *spi_flash_probe(unsigned int busnum, unsigned int cs,
- unsigned int max_hz, unsigned int spi_mode)
-{
- struct spi_slave *bus;
-
- bus = spi_setup_slave(busnum, cs, max_hz, spi_mode);
- return spi_flash_probe_tail(bus);
-}
-
-#ifdef CONFIG_OF_SPI_FLASH
-struct spi_flash *spi_flash_probe_fdt(const void *blob, int slave_node,
- int spi_node)
-{
- struct spi_slave *bus;
-
- bus = spi_setup_slave_fdt(blob, slave_node, spi_node);
- return spi_flash_probe_tail(bus);
-}
-#endif
-
void spi_flash_free(struct spi_flash *flash)
{
+#ifdef CONFIG_SPI_FLASH_MTD
+ spi_flash_mtd_unregister();
+#endif
spi_free_slave(flash->spi);
free(flash);
}
{
struct spi_flash *flash = dev_get_uclass_priv(dev);
- return spi_flash_cmd_read_ops(flash, offset, len, buf);
+ return log_ret(spi_flash_cmd_read_ops(flash, offset, len, buf));
}
-int spi_flash_std_write(struct udevice *dev, u32 offset, size_t len,
- const void *buf)
+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);
+#if defined(CONFIG_SPI_FLASH_SST)
+ if (flash->flags & SNOR_F_SST_WR) {
+ if (flash->spi->mode & SPI_TX_BYTE)
+ return sst_write_bp(flash, offset, len, buf);
+ else
+ return sst_write_wp(flash, offset, len, buf);
+ }
+#endif
+
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_get_sw_write_prot(struct udevice *dev)
+{
+ struct spi_flash *flash = dev_get_uclass_priv(dev);
+
+ return spi_flash_cmd_get_sw_write_prot(flash);
+}
+
+static int spi_flash_std_probe(struct udevice *dev)
{
- struct spi_slave *slave = dev_get_parentdata(dev);
+ struct spi_slave *slave = dev_get_parent_priv(dev);
struct dm_spi_slave_platdata *plat = dev_get_parent_platdata(dev);
struct spi_flash *flash;
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 int spi_flash_std_remove(struct udevice *dev)
+{
+#ifdef CONFIG_SPI_FLASH_MTD
+ spi_flash_mtd_unregister();
+#endif
+ return 0;
}
static const struct dm_spi_flash_ops spi_flash_std_ops = {
.read = spi_flash_std_read,
.write = spi_flash_std_write,
.erase = spi_flash_std_erase,
+ .get_sw_write_prot = spi_flash_std_get_sw_write_prot,
};
static const struct udevice_id spi_flash_std_ids[] = {
.id = UCLASS_SPI_FLASH,
.of_match = spi_flash_std_ids,
.probe = spi_flash_std_probe,
+ .remove = spi_flash_std_remove,
.priv_auto_alloc_size = sizeof(struct spi_flash),
.ops = &spi_flash_std_ops,
};
projects / platform / kernel / u-boot.git / blobdiff