libpldm: Add API to decode component image info
This patch provides API to decode the individual component image
information and also do basic validation.
The API works with DSP0267_1.1.0, DSP0267_1.0.1 and DSP0267_1.0.0.
Tested: Unit tests passed
Signed-off-by: Tom Joseph <rushtotom@gmail.com>
Change-Id: Ife0ab62cf0890d0144b1fda1c4ba5e9262be4714
diff --git a/libpldm/firmware_update.c b/libpldm/firmware_update.c
index 379549d..23487eb 100644
--- a/libpldm/firmware_update.c
+++ b/libpldm/firmware_update.c
@@ -297,6 +297,70 @@
return PLDM_SUCCESS;
}
+int decode_pldm_comp_image_info(
+ const uint8_t *data, size_t length,
+ struct pldm_component_image_information *pldm_comp_image_info,
+ struct variable_field *comp_version_str)
+{
+ if (data == NULL || pldm_comp_image_info == NULL ||
+ comp_version_str == NULL) {
+ return PLDM_ERROR_INVALID_DATA;
+ }
+
+ if (length < sizeof(struct pldm_component_image_information)) {
+ return PLDM_ERROR_INVALID_LENGTH;
+ }
+
+ struct pldm_component_image_information *data_header =
+ (struct pldm_component_image_information *)(data);
+
+ if (!is_string_type_valid(data_header->comp_version_string_type) ||
+ (data_header->comp_version_string_length == 0)) {
+ return PLDM_ERROR_INVALID_DATA;
+ }
+
+ if (length < sizeof(struct pldm_component_image_information) +
+ data_header->comp_version_string_length) {
+ return PLDM_ERROR_INVALID_LENGTH;
+ }
+
+ pldm_comp_image_info->comp_classification =
+ le16toh(data_header->comp_classification);
+ pldm_comp_image_info->comp_identifier =
+ le16toh(data_header->comp_identifier);
+ pldm_comp_image_info->comp_comparison_stamp =
+ le32toh(data_header->comp_comparison_stamp);
+ pldm_comp_image_info->comp_options.value =
+ le16toh(data_header->comp_options.value);
+ pldm_comp_image_info->requested_comp_activation_method.value =
+ le16toh(data_header->requested_comp_activation_method.value);
+ pldm_comp_image_info->comp_location_offset =
+ le32toh(data_header->comp_location_offset);
+ pldm_comp_image_info->comp_size = le32toh(data_header->comp_size);
+ pldm_comp_image_info->comp_version_string_type =
+ data_header->comp_version_string_type;
+ pldm_comp_image_info->comp_version_string_length =
+ data_header->comp_version_string_length;
+
+ if ((pldm_comp_image_info->comp_options.bits.bit1 == false &&
+ pldm_comp_image_info->comp_comparison_stamp !=
+ PLDM_FWUP_INVALID_COMPONENT_COMPARISON_TIMESTAMP)) {
+ return PLDM_ERROR_INVALID_DATA;
+ }
+
+ if (pldm_comp_image_info->comp_location_offset == 0 ||
+ pldm_comp_image_info->comp_size == 0) {
+ return PLDM_ERROR_INVALID_DATA;
+ }
+
+ comp_version_str->ptr =
+ data + sizeof(struct pldm_component_image_information);
+ comp_version_str->length =
+ pldm_comp_image_info->comp_version_string_length;
+
+ return PLDM_SUCCESS;
+}
+
int encode_query_device_identifiers_req(uint8_t instance_id,
size_t payload_length,
struct pldm_msg *msg)