@@ -396,6 +396,17 @@ void fwu_populate_mdata_image_info(struct fwu_data *data);
*/
int fwu_get_mdata_size(uint32_t *mdata_size);
+/**
+ * fwu_mdata_get_image_guid() - Get image GUID for a type and bank
+ * @image_guid: Pointer to be filled with the found image GUID
+ * @image_type_guid: Pointer to the image type GUID to search for
+ * @bank_index: Index of the bank
+ *
+ * Return: 0 if OK, -ve on error
+ */
+int fwu_mdata_get_image_guid(efi_guid_t *image_guid,
+ const efi_guid_t *image_type_guid, u32 bank_index);
+
/**
* fwu_state_machine_updates() - Update FWU state of the platform
* @state: FWU bank state
@@ -243,6 +243,39 @@ int fwu_sync_mdata(struct fwu_mdata *mdata, int part)
return 0;
}
+/**
+ * fwu_mdata_get_image_guid() - Get image GUID for a type and bank
+ * @image_guid: Pointer to be filled with the found image GUID
+ * @image_type_guid: Pointer to the image type GUID to search for
+ * @bank_index: Index of the bank
+ *
+ * Return: 0 if OK, -ve on error
+ */
+int fwu_mdata_get_image_guid(efi_guid_t *image_guid,
+ const efi_guid_t *image_type_guid, u32 bank_index)
+{
+ struct fwu_data *data = &g_fwu_data;
+ struct fwu_image_entry *image;
+ int i;
+
+ if (bank_index >= data->num_banks)
+ return -EINVAL;
+
+ for (i = 0; i < data->num_images; i++) {
+ image = &data->fwu_images[i];
+
+ if (!guidcmp(image_type_guid, &image->image_type_guid)) {
+ struct fwu_image_bank_info *bank;
+
+ bank = &image->img_bank_info[bank_index];
+ guidcpy(image_guid, &bank->image_guid);
+ return 0;
+ }
+ }
+
+ return -ENOENT;
+}
+
/**
* fwu_mdata_copies_allocate() - Allocate memory for metadata
* @mdata_size: Size of the metadata structure
Introduce fwu_mdata_get_image_guid() to retrieve a specific image GUID from the FWU metadata based on the bank index and image type GUID. This allows identifying the correct partition in multi-bank (A/B) scenarios, ensuring the correct image is targeted depending on the current bank. Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com> --- Changes in v3: - Add kerneldoc comment for fwu_mdata_get_image_guid() above its declaration in fwu.h. Changes in v2: - Add kerneldoc comment for fwu_mdata_get_image_guid(). - Pass efi_guid_t by pointer for consistency. include/fwu.h | 11 +++++++++++ lib/fwu_updates/fwu.c | 33 +++++++++++++++++++++++++++++++++ 2 files changed, 44 insertions(+)