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129 lines
4.0 KiB
C
129 lines
4.0 KiB
C
/** @file
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Parse the contents of named fw_cfg files as simple (scalar) data types.
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Copyright (C) 2020, Red Hat, Inc.
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#ifndef QEMU_FW_CFG_SIMPLE_PARSER_LIB_H_
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#define QEMU_FW_CFG_SIMPLE_PARSER_LIB_H_
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#include <Base.h>
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/**
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Look up FileName with QemuFwCfgFindFile() from QemuFwCfgLib. Read the fw_cfg
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file into a small array with automatic storage duration. Parse the array as
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the textual representation of a BOOLEAN.
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@param[in] FileName The name of the fw_cfg file to look up and parse.
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@param[out] Value On success, Value is TRUE if the contents of the fw_cfg
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file case-insensitively match "true", "yes", "y",
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"enable", "enabled", "1".
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On success, Value is FALSE if the contents of the fw_cfg
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file case-insensitively match "false", "no", "n",
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"disable", "disabled", "0".
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On failure, Value is not changed.
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@retval RETURN_SUCCESS Parsing successful. Value has been set.
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@retval RETURN_UNSUPPORTED Firmware configuration is unavailable.
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@retval RETURN_PROTOCOL_ERROR Parsing failed. Value has not been changed.
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@return Error codes propagated from
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QemuFwCfgFindFile(). Value has not been
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changed.
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**/
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RETURN_STATUS
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EFIAPI
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QemuFwCfgParseBool (
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IN CONST CHAR8 *FileName,
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OUT BOOLEAN *Value
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);
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/**
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Look up FileName with QemuFwCfgFindFile() from QemuFwCfgLib. Read the fw_cfg
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file into a small array with automatic storage duration. Parse the array as
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the textual representation of a UINT8.
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@param[in] FileName The name of the fw_cfg file to look up and parse.
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@param[in] ParseAsHex If TRUE, call BaseLib's AsciiStrHexToUint64S() for
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parsing the fw_cfg file.
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If FALSE, call BaseLib's AsciiStrDecimalToUint64S()
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for parsing the fw_cfg file.
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@param[out] Value On success, Value has been parsed with the BaseLib
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function determined by ParseAsHex, and also
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range-checked for [0, MAX_UINT8].
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On failure, Value is not changed.
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@retval RETURN_SUCCESS Parsing successful. Value has been set.
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@retval RETURN_UNSUPPORTED Firmware configuration is unavailable.
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@retval RETURN_PROTOCOL_ERROR Parsing failed. Value has not been changed.
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@retval RETURN_PROTOCOL_ERROR Parsing succeeded, but the result does not fit
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in the [0, MAX_UINT8] range. Value has not
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been changed.
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@return Error codes propagated from
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QemuFwCfgFindFile() and from the BaseLib
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function selected by ParseAsHex. Value has not
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been changed.
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**/
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RETURN_STATUS
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EFIAPI
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QemuFwCfgParseUint8 (
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IN CONST CHAR8 *FileName,
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IN BOOLEAN ParseAsHex,
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OUT UINT8 *Value
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);
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//
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// The following functions behave identically to QemuFwCfgParseUint8(),
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// only their range checks use MAX_UINT16, MAX_UINT32, MAX_UINT64, MAX_UINTN,
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// respectively.
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//
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RETURN_STATUS
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EFIAPI
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QemuFwCfgParseUint16 (
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IN CONST CHAR8 *FileName,
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IN BOOLEAN ParseAsHex,
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OUT UINT16 *Value
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);
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RETURN_STATUS
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EFIAPI
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QemuFwCfgParseUint32 (
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IN CONST CHAR8 *FileName,
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IN BOOLEAN ParseAsHex,
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OUT UINT32 *Value
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);
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RETURN_STATUS
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EFIAPI
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QemuFwCfgParseUint64 (
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IN CONST CHAR8 *FileName,
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IN BOOLEAN ParseAsHex,
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OUT UINT64 *Value
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);
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RETURN_STATUS
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EFIAPI
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QemuFwCfgParseUintn (
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IN CONST CHAR8 *FileName,
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IN BOOLEAN ParseAsHex,
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OUT UINTN *Value
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);
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#endif // QEMU_FW_CFG_SIMPLE_PARSER_LIB_H_
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