diff options
| -rw-r--r-- | boot/image-fit.c | 37 | ||||
| -rw-r--r-- | include/image.h | 70 |
2 files changed, 107 insertions, 0 deletions
diff --git a/boot/image-fit.c b/boot/image-fit.c index 21dbd05118..f16eab9df3 100644 --- a/boot/image-fit.c +++ b/boot/image-fit.c @@ -1916,6 +1916,43 @@ int fit_conf_get_prop_node(const void *fit, int noffset, return fit_conf_get_prop_node_index(fit, noffset, prop_name, 0); } +static int fit_get_data_tail(const void *fit, int noffset, + const void **data, size_t *size) +{ + char *desc; + + if (noffset < 0) + return noffset; + + if (!fit_image_verify(fit, noffset)) + return -EINVAL; + + if (fit_image_get_data_and_size(fit, noffset, data, size)) + return -ENOENT; + + if (!fit_get_desc(fit, noffset, &desc)) + printf("%s\n", desc); + + return 0; +} + +int fit_get_data_node(const void *fit, const char *image_uname, + const void **data, size_t *size) +{ + int noffset = fit_image_get_node(fit, image_uname); + + return fit_get_data_tail(fit, noffset, data, size); +} + +int fit_get_data_conf_prop(const void *fit, const char *prop_name, + const void **data, size_t *size) +{ + int noffset = fit_conf_get_node(fit, NULL); + + noffset = fit_conf_get_prop_node(fit, noffset, prop_name); + return fit_get_data_tail(fit, noffset, data, size); +} + static int fit_image_select(const void *fit, int rd_noffset, int verify) { fit_image_print(fit, rd_noffset, " "); diff --git a/include/image.h b/include/image.h index e4c6a50b88..d7d756c645 100644 --- a/include/image.h +++ b/include/image.h @@ -1014,6 +1014,76 @@ int fit_image_get_data_size_unciphered(const void *fit, int noffset, int fit_image_get_data_and_size(const void *fit, int noffset, const void **data, size_t *size); +/** + * fit_get_data_node() - Get verified image data for an image + * @fit: Pointer to the FIT format image header + * @image_uname: The name of the image node + * @data: A pointer which will be filled with the location of the image data + * @size: A pointer which will be filled with the size of the image data + * + * This function looks up the location and size of an image specified by its + * name. For example, if you had a FIT like:: + * + * images { + * my-firmware { + * ... + * }; + * }; + * + * Then you could look up the data location and size of the my-firmware image + * by calling this function with @image_uname set to "my-firmware". This + * function also verifies the image data (if enabled) before returning. The + * image description is printed out on success. @data and @size will not be + * modified on faulure. + * + * Return: + * * 0 on success + * * -EINVAL if the image could not be verified + * * -ENOENT if there was a problem getting the data/size + * * Another negative error if there was a problem looking up the image node. + */ +int fit_get_data_node(const void *fit, const char *image_uname, + const void **data, size_t *size); + +/** + * fit_get_data_conf_prop() - Get verified image data for a property in /conf + * @fit: Pointer to the FIT format image header + * @prop_name: The name of the property in /conf referencing the image + * @data: A pointer which will be filled with the location of the image data + * @size: A pointer which will be filled with the size of the image data + * + * This function looks up the location and size of an image specified by a + * property in /conf. For example, if you had a FIT like:: + * + * images { + * my-firmware { + * ... + * }; + * }; + * + * configurations { + * default = "conf-1"; + * conf-1 { + * some-firmware = "my-firmware"; + * }; + * }; + * + * Then you could look up the data location and size of the my-firmware image + * by calling this function with @prop_name set to "some-firmware". This + * function also verifies the image data (if enabled) before returning. The + * image description is printed out on success. @data and @size will not be + * modified on faulure. + * + * Return: + * * 0 on success + * * -EINVAL if the image could not be verified + * * -ENOENT if there was a problem getting the data/size + * * Another negative error if there was a problem looking up the configuration + * or image node. + */ +int fit_get_data_conf_prop(const void *fit, const char *prop_name, + const void **data, size_t *size); + int fit_image_hash_get_algo(const void *fit, int noffset, const char **algo); int fit_image_hash_get_value(const void *fit, int noffset, uint8_t **value, int *value_len); |