diff options
Diffstat (limited to 'drivers/mtd')
| -rw-r--r-- | drivers/mtd/spi/sandbox.c | 10 | ||||
| -rw-r--r-- | drivers/mtd/spi/sf-uclass.c | 9 | ||||
| -rw-r--r-- | drivers/mtd/spi/sf_internal.h | 3 | ||||
| -rw-r--r-- | drivers/mtd/spi/sf_probe.c | 8 | ||||
| -rw-r--r-- | drivers/mtd/spi/spi_flash.c | 12 |
5 files changed, 42 insertions, 0 deletions
diff --git a/drivers/mtd/spi/sandbox.c b/drivers/mtd/spi/sandbox.c index 7fef754c634..7b9891cb981 100644 --- a/drivers/mtd/spi/sandbox.c +++ b/drivers/mtd/spi/sandbox.c @@ -57,6 +57,8 @@ static const char *sandbox_sf_state_name(enum sandbox_sf_state state) /* Bits for the status register */ #define STAT_WIP (1 << 0) #define STAT_WEL (1 << 1) +#define STAT_BP_SHIFT 2 +#define STAT_BP_MASK (7 << STAT_BP_SHIFT) /* Assume all SPI flashes have 3 byte addresses since they do atm */ #define SF_ADDR_LEN 3 @@ -102,6 +104,14 @@ struct sandbox_spi_flash_plat_data { int cs; }; +void sandbox_sf_set_block_protect(struct udevice *dev, int bp_mask) +{ + struct sandbox_spi_flash *sbsf = dev_get_priv(dev); + + sbsf->status &= ~STAT_BP_MASK; + sbsf->status |= bp_mask << STAT_BP_SHIFT; +} + /** * This is a very strange probe function. If it has platform data (which may * have come from the device tree) then this function gets the filename and diff --git a/drivers/mtd/spi/sf-uclass.c b/drivers/mtd/spi/sf-uclass.c index 662525f016f..719a2fd23ae 100644 --- a/drivers/mtd/spi/sf-uclass.c +++ b/drivers/mtd/spi/sf-uclass.c @@ -28,6 +28,15 @@ int spi_flash_erase_dm(struct udevice *dev, u32 offset, size_t len) return log_ret(sf_get_ops(dev)->erase(dev, offset, len)); } +int spl_flash_get_sw_write_prot(struct udevice *dev) +{ + struct dm_spi_flash_ops *ops = sf_get_ops(dev); + + if (!ops->get_sw_write_prot) + return -ENOSYS; + return log_ret(ops->get_sw_write_prot(dev)); +} + /* * TODO(sjg@chromium.org): This is an old-style function. We should remove * it when all SPI flash drivers use dm diff --git a/drivers/mtd/spi/sf_internal.h b/drivers/mtd/spi/sf_internal.h index 26f5c7c995e..46a50444175 100644 --- a/drivers/mtd/spi/sf_internal.h +++ b/drivers/mtd/spi/sf_internal.h @@ -170,6 +170,9 @@ 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); +/* Get software write-protect value (BP bits) */ +int spi_flash_cmd_get_sw_write_prot(struct spi_flash *flash); + /* Lock stmicro spi flash region */ int stm_lock(struct spi_flash *flash, u32 ofs, size_t len); diff --git a/drivers/mtd/spi/sf_probe.c b/drivers/mtd/spi/sf_probe.c index 94fde2ae7a3..5a2e932de8f 100644 --- a/drivers/mtd/spi/sf_probe.c +++ b/drivers/mtd/spi/sf_probe.c @@ -124,6 +124,13 @@ static int spi_flash_std_erase(struct udevice *dev, u32 offset, size_t len) return spi_flash_cmd_erase_ops(flash, offset, len); } +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_parent_priv(dev); @@ -141,6 +148,7 @@ 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[] = { diff --git a/drivers/mtd/spi/spi_flash.c b/drivers/mtd/spi/spi_flash.c index a87bacd4ac7..0c2392f28a4 100644 --- a/drivers/mtd/spi/spi_flash.c +++ b/drivers/mtd/spi/spi_flash.c @@ -110,6 +110,18 @@ static int write_cr(struct spi_flash *flash, u8 wc) } #endif +int spi_flash_cmd_get_sw_write_prot(struct spi_flash *flash) +{ + u8 status; + int ret; + + ret = read_sr(flash, &status); + if (ret) + return ret; + + return (status >> 2) & 7; +} + #ifdef CONFIG_SPI_FLASH_BAR /* * This "clean_bar" is necessary in a situation when one was accessing |