return ret;
}
+/**
+ * eficonfig_enumerate_boot_option() - enumerate the possible bootable media
+ *
+ * @opt: pointer to the media boot option structure
+ * @volume_handles: pointer to the efi handles
+ * @count: number of efi handle
+ * Return: status code
+ */
+efi_status_t eficonfig_enumerate_boot_option(struct eficonfig_media_boot_option *opt,
+ efi_handle_t *volume_handles, efi_status_t count)
+{
+ u32 i;
+ struct efi_handler *handler;
+ efi_status_t ret = EFI_SUCCESS;
+
+ for (i = 0; i < count; i++) {
+ u16 *p;
+ u16 dev_name[BOOTMENU_DEVICE_NAME_MAX];
+ char *optional_data;
+ struct efi_load_option lo;
+ char buf[BOOTMENU_DEVICE_NAME_MAX];
+ struct efi_device_path *device_path;
+
+ ret = efi_search_protocol(volume_handles[i], &efi_guid_device_path, &handler);
+ if (ret != EFI_SUCCESS)
+ continue;
+ ret = efi_protocol_open(handler, (void **)&device_path,
+ efi_root, NULL, EFI_OPEN_PROTOCOL_GET_PROTOCOL);
+ if (ret != EFI_SUCCESS)
+ continue;
+
+ ret = efi_disk_get_device_name(volume_handles[i], buf, BOOTMENU_DEVICE_NAME_MAX);
+ if (ret != EFI_SUCCESS)
+ continue;
+
+ p = dev_name;
+ utf8_utf16_strncpy(&p, buf, strlen(buf));
+
+ lo.label = dev_name;
+ lo.attributes = LOAD_OPTION_ACTIVE;
+ lo.file_path = device_path;
+ lo.file_path_length = efi_dp_size(device_path) + sizeof(END);
+ /*
+ * Set the dedicated guid to optional_data, it is used to identify
+ * the boot option that automatically generated by the bootmenu.
+ * efi_serialize_load_option() expects optional_data is null-terminated
+ * utf8 string, so set the "1234567" string to allocate enough space
+ * to store guid, instead of realloc the load_option.
+ */
+ lo.optional_data = "1234567";
+ opt[i].size = efi_serialize_load_option(&lo, (u8 **)&opt[i].lo);
+ if (!opt[i].size) {
+ ret = EFI_OUT_OF_RESOURCES;
+ goto out;
+ }
+ /* set the guid */
+ optional_data = (char *)opt[i].lo + (opt[i].size - u16_strsize(u"1234567"));
+ memcpy(optional_data, &efi_guid_bootmenu_auto_generated, sizeof(efi_guid_t));
+ }
+
+out:
+ return ret;
+}
+
+/**
+ * eficonfig_delete_invalid_boot_option() - delete non-existing boot option
+ *
+ * @opt: pointer to the media boot option structure
+ * @count: number of media boot option structure
+ * Return: status code
+ */
+efi_status_t eficonfig_delete_invalid_boot_option(struct eficonfig_media_boot_option *opt,
+ efi_status_t count)
+{
+ u32 i, j;
+ efi_uintn_t size;
+ efi_status_t ret;
+ void *load_option;
+ struct efi_load_option lo;
+ u16 varname[] = u"Boot####";
+
+ for (i = 0; i <= 0xFFFF; i++) {
+ efi_uintn_t tmp;
+
+ efi_create_indexed_name(varname, sizeof(varname), "Boot", i);
+ load_option = efi_get_var(varname, &efi_global_variable_guid, &size);
+ if (!load_option)
+ continue;
+
+ tmp = size;
+ ret = efi_deserialize_load_option(&lo, load_option, &size);
+ if (ret != EFI_SUCCESS)
+ goto next;
+
+ if (size >= sizeof(efi_guid_bootmenu_auto_generated)) {
+ if (guidcmp(lo.optional_data, &efi_guid_bootmenu_auto_generated) == 0) {
+ for (j = 0; j < count; j++) {
+ if (opt[j].size == tmp &&
+ memcmp(opt[j].lo, load_option, tmp) == 0) {
+ opt[j].exist = true;
+ break;
+ }
+ }
+
+ if (j == count) {
+ ret = delete_boot_option(i);
+ if (ret != EFI_SUCCESS) {
+ free(load_option);
+ goto out;
+ }
+ }
+ }
+ }
+next:
+ free(load_option);
+ }
+
+out:
+ return ret;
+}
+
+/**
+ * eficonfig_generate_media_device_boot_option() - generate the media device boot option
+ *
+ * This function enumerates all devices supporting EFI_SIMPLE_FILE_SYSTEM_PROTOCOL
+ * and generate the bootmenu entries.
+ * This function also provide the BOOT#### variable maintenance for
+ * the media device entries.
+ * - Automatically create the BOOT#### variable for the newly detected device,
+ * this BOOT#### variable is distinguished by the special GUID
+ * stored in the EFI_LOAD_OPTION.optional_data
+ * - If the device is not attached to the system, the associated BOOT#### variable
+ * is automatically deleted.
+ *
+ * Return: status code
+ */
+efi_status_t eficonfig_generate_media_device_boot_option(void)
+{
+ u32 i;
+ efi_status_t ret;
+ efi_uintn_t count;
+ efi_handle_t *volume_handles = NULL;
+ struct eficonfig_media_boot_option *opt = NULL;
+
+ ret = efi_locate_handle_buffer_int(BY_PROTOCOL, &efi_simple_file_system_protocol_guid,
+ NULL, &count, (efi_handle_t **)&volume_handles);
+ if (ret != EFI_SUCCESS)
+ return ret;
+
+ opt = calloc(count, sizeof(struct eficonfig_media_boot_option));
+ if (!opt)
+ goto out;
+
+ /* enumerate all devices supporting EFI_SIMPLE_FILE_SYSTEM_PROTOCOL */
+ ret = eficonfig_enumerate_boot_option(opt, volume_handles, count);
+ if (ret != EFI_SUCCESS)
+ goto out;
+
+ /*
+ * System hardware configuration may vary depending on the user setup.
+ * The boot option is automatically added by the bootmenu.
+ * If the device is not attached to the system, the boot option needs
+ * to be deleted.
+ */
+ ret = eficonfig_delete_invalid_boot_option(opt, count);
+ if (ret != EFI_SUCCESS)
+ goto out;
+
+ /* add non-existent boot option */
+ for (i = 0; i < count; i++) {
+ u32 boot_index;
+ u16 var_name[9];
+
+ if (!opt[i].exist) {
+ ret = eficonfig_get_unused_bootoption(var_name, sizeof(var_name),
+ &boot_index);
+ if (ret != EFI_SUCCESS)
+ goto out;
+
+ ret = efi_set_variable_int(var_name, &efi_global_variable_guid,
+ EFI_VARIABLE_NON_VOLATILE |
+ EFI_VARIABLE_BOOTSERVICE_ACCESS |
+ EFI_VARIABLE_RUNTIME_ACCESS,
+ opt[i].size, opt[i].lo, false);
+ if (ret != EFI_SUCCESS)
+ goto out;
+
+ ret = eficonfig_append_bootorder(boot_index);
+ if (ret != EFI_SUCCESS) {
+ efi_set_variable_int(var_name, &efi_global_variable_guid,
+ 0, 0, NULL, false);
+ goto out;
+ }
+ }
+ }
+
+out:
+ if (opt) {
+ for (i = 0; i < count; i++)
+ free(opt[i].lo);
+ }
+ free(opt);
+ efi_free_pool(volume_handles);
+
+ return ret;
+}
+
+
/**
* eficonfig_init() - do required initialization for eficonfig command
*
projects / u-boot.git / commitdiff