/**
* efi_get_driver_handle_info() - get information of UEFI driver
*
* @handle: Handle of UEFI device
* @driver_name: Driver name
* @image_path: Pointer to text of device path
* Return: 0 on success, -1 on failure
*
* Currently return no useful information as all UEFI drivers are
* built-in..
*/
static int efi_get_driver_handle_info(efi_handle_t handle, u16 **driver_name,
u16 **image_path)
{
struct efi_handler *handler;
struct efi_loaded_image *image;
efi_status_t ret;
/*
* driver name
* TODO: support EFI_COMPONENT_NAME2_PROTOCOL
*/
*driver_name = NULL;
/* image name */
ret = efi_search_protocol(handle, &efi_guid_loaded_image, &handler);
if (ret != EFI_SUCCESS) {
*image_path = NULL;
return 0;
}
image = handler->protocol_interface;
*image_path = efi_dp_str(image->file_path);
return 0;
}
/**
* efi_get_device_handle_info() - get information of UEFI device
*
* @handle: Handle of UEFI device
* @dev_path_text: Pointer to text of device path
* Return: 0 on success, -1 on failure
*
* Currently return a formatted text of device path.
*/
static int efi_get_device_handle_info(efi_handle_t handle, u16 **dev_path_text)
{
struct efi_device_path *dp;
efi_status_t ret;
ret = EFI_CALL(BS->open_protocol(handle, &efi_guid_device_path,
(void **)&dp, NULL /* FIXME */, NULL,
EFI_OPEN_PROTOCOL_GET_PROTOCOL));
if (ret == EFI_SUCCESS) {
*dev_path_text = efi_dp_str(dp);
return 0;
} else {
return -1;
}
}
/**
* show_efi_boot_opt_data() - dump UEFI load option
*
* @id: Load option number
* @data: Value of UEFI load option variable
*
* Decode the value of UEFI load option variable and print information.
*/
static void show_efi_boot_opt_data(int id, void *data)
{
struct efi_load_option lo;
char *label, *p;
size_t label_len16, label_len;
u16 *dp_str;
efi_deserialize_load_option(&lo, data);
label_len16 = u16_strlen(lo.label);
label_len = utf16_utf8_strnlen(lo.label, label_len16);
label = malloc(label_len + 1);
if (!label)
return;
p = label;
utf16_utf8_strncpy(&p, lo.label, label_len16);
printf("Boot%04X:\n", id);
printf("\tattributes: %c%c%c (0x%08x)\n",
/* ACTIVE */
lo.attributes & LOAD_OPTION_ACTIVE ? 'A' : '-',
/* FORCE RECONNECT */
lo.attributes & LOAD_OPTION_FORCE_RECONNECT ? 'R' : '-',
/* HIDDEN */
lo.attributes & LOAD_OPTION_HIDDEN ? 'H' : '-',
lo.attributes);
printf("\tlabel: %s\n", label);
dp_str = efi_dp_str(lo.file_path);
printf("\tfile_path: %ls\n", dp_str);
efi_free_pool(dp_str);
printf("\tdata: %s\n", lo.optional_data);
free(label);
}
* @controller_handle: handle of the controller
* @remaining_device_path: path specifying the child controller
* Return: status code
*/
static efi_status_t EFIAPI efi_uc_supported(
struct efi_driver_binding_protocol *this,
efi_handle_t controller_handle,
struct efi_device_path *remaining_device_path)
{
efi_status_t r, ret;
void *interface;
struct efi_driver_binding_extended_protocol *bp =
(struct efi_driver_binding_extended_protocol *)this;
EFI_ENTRY("%p, %p, %ls", this, controller_handle,
efi_dp_str(remaining_device_path));
ret = EFI_CALL(systab.boottime->open_protocol(
controller_handle, bp->ops->protocol,
&interface, this->driver_binding_handle,
controller_handle, EFI_OPEN_PROTOCOL_BY_DRIVER));
switch (ret) {
case EFI_ACCESS_DENIED:
case EFI_ALREADY_STARTED:
goto out;
case EFI_SUCCESS:
break;
default:
ret = EFI_UNSUPPORTED;
goto out;
}