diff options
Diffstat (limited to 'src/include/spi_flash.h')
| -rw-r--r-- | src/include/spi_flash.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/src/include/spi_flash.h b/src/include/spi_flash.h index f7f3b3dbdf..9f8d2d06ea 100644 --- a/src/include/spi_flash.h +++ b/src/include/spi_flash.h @@ -40,6 +40,16 @@ struct spi_flash_ops { const void *buf); int (*erase)(const struct spi_flash *flash, u32 offset, size_t len); int (*status)(const struct spi_flash *flash, u8 *reg); + /* + * Returns 1 if the whole region is software write protected. + * Hardware write protection mechanism aren't accounted. + * If the write protection could be changed, due to unlocked status + * register for example, 0 should be returned. + * Returns -1 on error. + */ + int (*get_write_protection)(const struct spi_flash *flash, + const struct region *region); + }; struct spi_flash { @@ -51,6 +61,7 @@ struct spi_flash { u8 erase_cmd; u8 status_cmd; const struct spi_flash_ops *ops; + const void *driver_private; }; void lb_spi_flash(struct lb_header *header); @@ -93,6 +104,21 @@ int spi_flash_write(const struct spi_flash *flash, u32 offset, size_t len, const void *buf); int spi_flash_erase(const struct spi_flash *flash, u32 offset, size_t len); int spi_flash_status(const struct spi_flash *flash, u8 *reg); + +/* + * Return the vendor dependent SPI flash write protection state. + * @param flash : A SPI flash device + * @param region: A subregion of the device's region + * + * Returns: + * -1 on error + * 0 if the device doesn't support block protection + * 0 if the device doesn't enable block protection + * 0 if given range isn't covered by block protection + * 1 if given range is covered by block protection + */ +int spi_flash_is_write_protected(const struct spi_flash *flash, + const struct region *region); /* * Some SPI controllers require exclusive access to SPI flash when volatile * operations like erase or write are being performed. In such cases, |