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/** @file
Copyright (c) 2017 - 2021, Arm Limited. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#ifndef ACPI_HELPER_LIB_H_
#define ACPI_HELPER_LIB_H_
/** Is a character upper case
*/
#define IS_UPPER_CHAR(x) ((x >= 'A') && (x <= 'Z'))
/** Is a character a decimal digit
*/
#define IS_DIGIT(x) ((x >= '0') && (x <= '9'))
/** Is a character an upper case hexadecimal digit
*/
#define IS_UPPER_HEX(x) (((x >= 'A') && (x <= 'F')) || IS_DIGIT (x))
/** Convert a hex number to its ASCII code.
@param [in] Hex Hex number to convert.
Must be 0 <= x < 16.
@return The ASCII code corresponding to x.
-1 if error.
**/
UINT8
EFIAPI
AsciiFromHex (
IN UINT8 Hex
);
/** Convert an ASCII char representing an hexadecimal number
to its integer value.
@param [in] Char Char to convert.
Must be between '0'-'9' or 'A'-'F' or 'a'-'f'.
@return The corresponding integer (between 0-16).
-1 if error.
**/
UINT8
EFIAPI
HexFromAscii (
IN CHAR8 Char
);
/** Check if a HID is a valid PNP ID.
@param [in] Hid The Hid to validate.
@retval TRUE The Hid is a valid PNP ID.
@retval FALSE The Hid is not a valid PNP ID.
**/
BOOLEAN
IsValidPnpId (
IN CONST CHAR8 * Hid
);
/** Check if a HID is a valid ACPI ID.
@param [in] Hid The Hid to validate.
@retval TRUE The Hid is a valid ACPI ID.
@retval FALSE The Hid is not a valid ACPI ID.
**/
BOOLEAN
IsValidAcpiId (
IN CONST CHAR8 * Hid
);
/** Convert a EisaId string to its compressed UINT32 equivalent.
Cf. ACPI 6.4 specification, s19.3.4 "ASL Macros": "Eisaid"
@param [in] EisaIdStr Input EisaId string.
@param [out] EisaIdInt Output EisaId UINT32 (compressed).
@retval EFI_SUCCESS The function completed successfully.
@retval EFI_INVALID_PARAMETER Invalid parameter.
**/
EFI_STATUS
EFIAPI
AmlGetEisaIdFromString (
IN CONST CHAR8 * EisaIdStr,
OUT UINT32 * EisaIdInt
);
#endif // ACPI_HELPER_LIB_H_
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