diff options
Diffstat (limited to 'libflashrom.c')
| -rw-r--r-- | libflashrom.c | 125 |
1 files changed, 125 insertions, 0 deletions
diff --git a/libflashrom.c b/libflashrom.c index 5f14c681..f0b9cfda 100644 --- a/libflashrom.c +++ b/libflashrom.c @@ -31,6 +31,7 @@ #include "layout.h" #include "ich_descriptors.h" #include "libflashrom.h" +#include "writeprotect.h" /** * @defgroup flashrom-general General @@ -623,3 +624,127 @@ void flashrom_layout_set(struct flashrom_flashctx *const flashctx, const struct } /** @} */ /* end flashrom-layout */ + + +/** + * @defgroup flashrom-wp + * @{ + */ + +/** + * @brief Create a new empty WP configuration. + * + * @param[out] cfg Points to a pointer of type struct flashrom_wp_cfg that will + * be set if creation succeeds. *cfg has to be freed by the + * caller with @ref flashrom_wp_cfg_release. + * @return 0 on success + * >0 on failure + */ +enum flashrom_wp_result flashrom_wp_cfg_new(struct flashrom_wp_cfg **cfg) +{ + *cfg = calloc(1, sizeof(**cfg)); + return *cfg ? 0 : FLASHROM_WP_ERR_OTHER; +} + +/** + * @brief Free a WP configuration. + * + * @param[out] cfg Pointer to the flashrom_wp_cfg to free. + */ +void flashrom_wp_cfg_release(struct flashrom_wp_cfg *cfg) +{ + free(cfg); +} + +/** + * @brief Set the protection mode for a WP configuration. + * + * @param[in] mode The protection mode to set. + * @param[out] cfg Pointer to the flashrom_wp_cfg structure to modify. + */ +void flashrom_wp_set_mode(struct flashrom_wp_cfg *cfg, enum flashrom_wp_mode mode) +{ + cfg->mode = mode; +} + +/** + * @brief Get the protection mode from a WP configuration. + * + * @param[in] cfg The WP configuration to get the protection mode from. + * @return The configuration's protection mode. + */ +enum flashrom_wp_mode flashrom_wp_get_mode(const struct flashrom_wp_cfg *cfg) +{ + return cfg->mode; +} + +/** + * @brief Set the protection range for a WP configuration. + * + * @param[out] cfg Pointer to the flashrom_wp_cfg structure to modify. + * @param[in] start The range's start address. + * @param[in] len The range's length. + */ +void flashrom_wp_set_range(struct flashrom_wp_cfg *cfg, size_t start, size_t len) +{ + cfg->range.start = start; + cfg->range.len = len; +} + +/** + * @brief Get the protection range from a WP configuration. + * + * @param[out] start Points to a size_t to write the range start to. + * @param[out] len Points to a size_t to write the range length to. + * @param[in] cfg The WP configuration to get the range from. + */ +void flashrom_wp_get_range(size_t *start, size_t *len, const struct flashrom_wp_cfg *cfg) +{ + *start = cfg->range.start; + *len = cfg->range.len; +} + +/** + * @brief Write a WP configuration to a flash chip. + * + * @param[in] flash The flash context used to access the chip. + * @param[in] cfg The WP configuration to write to the chip. + * @return 0 on success + * >0 on failure + */ +enum flashrom_wp_result flashrom_wp_write_cfg(struct flashctx *flash, const struct flashrom_wp_cfg *cfg) +{ + /* + * TODO: Call custom implementation if the programmer is opaque, as + * direct WP operations require SPI access. In particular, linux_mtd + * has its own WP operations we should use instead. + */ + if (flash->mst->buses_supported & BUS_SPI) + return wp_write_cfg(flash, cfg); + + return FLASHROM_WP_ERR_OTHER; +} + +/** + * @brief Read the current WP configuration from a flash chip. + * + * @param[out] cfg Pointer to a struct flashrom_wp_cfg to store the chip's + * configuration in. + * @param[in] flash The flash context used to access the chip. + * @return 0 on success + * >0 on failure + */ +enum flashrom_wp_result flashrom_wp_read_cfg(struct flashrom_wp_cfg *cfg, struct flashctx *flash) +{ + /* + * TODO: Call custom implementation if the programmer is opaque, as + * direct WP operations require SPI access. In particular, linux_mtd + * has its own WP operations we should use instead. + */ + if (flash->mst->buses_supported & BUS_SPI) + return wp_read_cfg(cfg, flash); + + return FLASHROM_WP_ERR_OTHER; +} + +/** @} */ /* end flashrom-wp */ |