lib/efi_loader/efi_device_path.c

3  * EFI device path from u-boot device-model mapping
50  * Iterate to next block in device-path, terminating (returning NULL)
67  * an End* node. This is useful to, for example, compare a device-path
94  * efi_dp_shorten() - shorten device-path
96  * When creating a short boot option we want to use a device-path that is
102  * See UEFI spec, section 3.1.2 for "short-form device path".
104  * @dp:		original device-path
105  * Return:	shortened device-path or NULL
122  * find_handle() - find handle by device path and installed protocol
126  * @dp:		device path to search
127  * @guid:	GUID of protocol that must be installed on path or NULL
128  * @short_path:	use short form device path for matching
129  * @rem:	pointer to receive remaining device path
184  * efi_dp_find_obj() - find handle by device path
188  * @dp:		device path to search
189  * @guid:	GUID of protocol that must be installed on path or NULL
190  * @rem:	pointer to receive remaining device path
201 		/* Match short form device path */
208  * Determine the last device path node that is not the end node.
210  * @dp		device path
227 /* get size of the first device path instance excluding end node */
242 /* get size of multi-instance device path excluding end node */
256 /* copy multi-instance device path */
277  * @dp1:	    First device path
278  * @dp2:	    Second device path
281  *		    If false the second device path will be concatenated to the
285  * concatenated device path or NULL. Caller must free the returned value
324 		/* the end node of the second device path has to be retained */
446 /* size of device-path not including END node for device and all parents
514  * Recursively build a device path.
516  * @buf		pointer to the end of the device path
518  * Return:	pointer to the end of the device path
723  * @buf		buffer to which the device path is written
799  * Create a device path for a block device or one of its partitions.
801  * @buf		buffer to which the device path is written
817 /* Construct a device-path from a partition on a block device: */
836  * @buf		buffer to which the device path is written
858  * path_to_uefi() - convert UTF-8 path to an UEFI style path
860  * Convert UTF-8 path to a UEFI style path (i.e. with backslashes as path
890  * efi_dp_from_file() - append file path node to device path.
892  * @dp:		device path or NULL
893  * @path:	file path or NULL
894  * Return:	device path or NULL in case of an error
897 					 const char *path)
905 		 2 * (utf8_utf16_strlen(path) + 1);
916 	/* add file-path: */
917 	if (*path) {
922 		path_to_uefi(fp->str, path);
971 /* Construct a device-path for memory-mapped image */
998  * efi_dp_split_file_path() - split of relative file path from device path
1000  * Given a device path indicating a file on a device, separate the device
1001  * path in two: the device path of the actual device and the file path
1004  * @full_path:		device path including device and file path
1005  * @device_path:	path of the device
1006  * @file_path:		relative path of the file or NULL if there is none
1040  * efi_dp_from_name() - convert U-Boot device and file path to device path
1044  * @path:	file path relative to U-Boot device, may be NULL
1045  * @device:	pointer to receive device path of the device
1046  * @file:	pointer to receive device path for the file
1050 			      const char *path,
1061 	if (path && !file)
1086 	if (!path)
1089 	*file = efi_dp_from_file(dp, path);
1097  * efi_dp_check_length() - check length of a device path
1099  * @dp:		pointer to device path
1100  * @maxlen:	maximum length of the device path
1102  * * length of the device path if it is less or equal @maxlen
1103  * * -1 if the device path is longer then @maxlen
1104  * * -1 if a device path node has a length of less than 4
1131  *                    multi-instance device path that matches
1136  * @lo:		EFI_LOAD_OPTION containing a valid device path
1140  * device path including the VenMedia node or NULL.
1169  * search_gpt_dp_node() - search gpt device path node
1171  * @device_path:	device path
1173  * Return:	pointer to the gpt device path node