src/drivers/efi/efivars.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #ifndef _EDK2_OPTION_H_
   4 #define _EDK2_OPTION_H_
   5
   6 #include <types.h>
   7 #include <commonlib/region.h>
   8
   9 #include <vendorcode/intel/edk2/UDK2017/MdePkg/Include/Uefi/UefiBaseType.h>
  10
  11 /**
  12  * efi_fv_get_option
  13  * Use the provided EFI variable store inside the region device as variable store.
  14  * @rdev: the readable region to operate on
  15  * @guid: the vendor guid to look for
  16  * @name: the variable name to look for. NULL terminated.
  17  * @dest: memory buffer to place the result into
  18  * @size: on input the size of buffer pointed to by dest.
  19  *        on output the number of bytes written.
  20  */
  21
  22 enum cb_err efi_fv_get_option(struct region_device *rdev,
  23                               const EFI_GUID *guid,
  24                               const char *name,
  25                               void *dest,
  26                               uint32_t *size);
  27
  28 /**
  29  * efi_fv_set_option
  30  * Use the provided EFI variable store inside the region device as variable store.
  31  * If the variable exists with the same size and contents, nothing will be written
  32  * to the region device.
  33  * @rdev: the read/writable region to operate on
  34  * @guid: the vendor guid to write
  35  * @name: the variable name to write. NULL terminated.
  36  * @data: memory buffer where to read data from
  37  * @size: the size of buffer pointed to by data
  38  */
  39 enum cb_err efi_fv_set_option(struct region_device *rdev,
  40                               const EFI_GUID *guid,
  41                               const char *name,
  42                               void *data,
  43                               uint32_t size);
  44
  45 enum cb_err efi_fv_print_options(struct region_device *rdev);
  46
  47 #endif /* _EDK2_OPTION_H_ */