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sf: Move spi_flash_scan code to sf_ops

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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

Tested-by: Jagan Teki <jteki@openedev.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Jagan Teki <jteki@openedev.com>
master
Jagan Teki 9 years ago
parent 3a1adb621b
commit 3847c0c180
3 changed files with 357 additions and 342 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
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  1. 14
      drivers/mtd/spi/sf_internal.h
  2. 343
      drivers/mtd/spi/sf_ops.c
  3. 342
      drivers/mtd/spi/sf_probe.c

14
drivers/mtd/spi/sf_internal.h
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@ -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_ */

343
drivers/mtd/spi/sf_ops.c
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@ -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;
}

342
drivers/mtd/spi/sf_probe.c
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@ -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
*

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