lv_uefi_private.h

Functions

bool lv_uefi_protocol_test(EFI_HANDLE handle, EFI_GUID *protocol)

Test if a protocol is installed at a handle.

Parameters:

  • handle – The handle on which the protocol might be installed.

  • protocol – The guid of the protocol.

Returns:

TRUE if the protocol is installed, FALSE if not.

void *lv_uefi_protocol_open(EFI_HANDLE handle, EFI_GUID *protocol)

Open a protocol.

Parameters:

  • handle – The handle on which the protocol is installed.

  • protocol – The guid of the protocol.

Returns:

A pointer to the interface, NULL if the protocol couldn't be opened.

void lv_uefi_protocol_close(EFI_HANDLE handle, EFI_GUID *protocol)

Close a protocol.

Parameters:

  • handle – The handle on which the protocol is installed.

  • protocol – The guid of the protocol.

size_t lv_uefi_ucs2_to_ascii(const CHAR16 *ucs2, char *ascii, size_t ascii_len)

Convert an UCS-2 string to an ASCII string. The string must contain only characters >= 0x20 and <= 0X7E.

Parameters:

  • ucs2 – The UCS-2 string.

  • ascii – The buffer to store the ASCII string.

  • ascii_len – The size of the buffer in ASCII characters.

Returns:

The number of characters written to the buffer or 0 if there was an error.

size_t lv_uefi_ascii_to_ucs2(const char *ascii, CHAR16 *ucs2, size_t ucs2_len)

Convert an ASCII string to an UCS-2 string. The string must contain only characters >= 0x20 and <= 0X7E.

Parameters:

  • ascii – The ASCII string.

  • ucs2 – The buffer to store the UCS-2 string.

  • ucs2_len – The size of the buffer in UCS-2 characters.

Returns:

The number of bytes written to the buffer or 0 if there was an error.

Variables

EFI_HANDLE gLvEfiImageHandle

Internal cache for the image handle (source: application entry point)

EFI_SYSTEM_TABLE *gLvEfiST

Internal cache for the system table (source: application entry point)

EFI_BOOT_SERVICES *gLvEfiBS

Internal cache for the boot services table (source: gLvEfiST)

EFI_RUNTIME_SERVICES *gLvEfiRT

Internal cache for the boot runtime service table (source: gLvEfiST)