ac0a286f4d
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3737 Apply uncrustify changes to .c/.h files in the OvmfPkg package Cc: Andrew Fish <afish@apple.com> Cc: Leif Lindholm <leif@nuviainc.com> Cc: Michael D Kinney <michael.d.kinney@intel.com> Signed-off-by: Michael Kubacki <michael.kubacki@microsoft.com> Reviewed-by: Andrew Fish <afish@apple.com>
219 lines
8.6 KiB
C
219 lines
8.6 KiB
C
/** @file
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Shared code for the Base Null and PEI fw_cfg instances of the QemuFwCfgS3Lib
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class.
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Copyright (C) 2017, Red Hat, Inc.
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#include <Library/DebugLib.h>
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#include <Library/QemuFwCfgS3Lib.h>
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/**
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Produce ACPI S3 Boot Script opcodes that (optionally) select an fw_cfg item,
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and transfer data to it.
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The opcodes produced by QemuFwCfgS3ScriptWriteBytes() will first restore
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NumberOfBytes bytes in ScratchBuffer in-place, in reserved memory, then write
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them to fw_cfg using DMA.
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If the operation fails during S3 resume, the boot script will hang.
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This function may only be called from the client module's
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FW_CFG_BOOT_SCRIPT_CALLBACK_FUNCTION, which was passed to
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QemuFwCfgS3CallWhenBootScriptReady() as Callback.
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@param[in] FirmwareConfigItem The UINT16 selector key of the firmware config
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item to write, expressed as INT32. If
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FirmwareConfigItem is -1, no selection is
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made, the write will occur to the currently
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selected item, at its currently selected
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offset. Otherwise, the specified item will be
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selected, and the write will occur at offset
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0.
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@param[in] NumberOfBytes Size of the data to restore in ScratchBuffer,
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and to write from ScratchBuffer, during S3
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resume. NumberOfBytes must not exceed
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ScratchBufferSize, which was passed to
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QemuFwCfgS3CallWhenBootScriptReady().
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@retval RETURN_SUCCESS The opcodes were appended to the ACPI S3
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Boot Script successfully. There is no way
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to undo this action.
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@retval RETURN_INVALID_PARAMETER FirmwareConfigItem is invalid.
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@retval RETURN_BAD_BUFFER_SIZE NumberOfBytes is larger than
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ScratchBufferSize.
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@return Error codes from underlying functions.
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**/
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RETURN_STATUS
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EFIAPI
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QemuFwCfgS3ScriptWriteBytes (
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IN INT32 FirmwareConfigItem,
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IN UINTN NumberOfBytes
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)
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{
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ASSERT (FALSE);
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return RETURN_UNSUPPORTED;
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}
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/**
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Produce ACPI S3 Boot Script opcodes that (optionally) select an fw_cfg item,
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and transfer data from it.
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The opcodes produced by QemuFwCfgS3ScriptReadBytes() will read NumberOfBytes
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bytes from fw_cfg using DMA, storing the result in ScratchBuffer, in reserved
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memory.
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If the operation fails during S3 resume, the boot script will hang.
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This function may only be called from the client module's
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FW_CFG_BOOT_SCRIPT_CALLBACK_FUNCTION, which was passed to
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QemuFwCfgS3CallWhenBootScriptReady() as Callback.
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@param[in] FirmwareConfigItem The UINT16 selector key of the firmware config
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item to read, expressed as INT32. If
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FirmwareConfigItem is -1, no selection is
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made, the read will occur from the currently
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selected item, from its currently selected
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offset. Otherwise, the specified item will be
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selected, and the read will occur from offset
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0.
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@param[in] NumberOfBytes Size of the data to read during S3 resume.
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NumberOfBytes must not exceed
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ScratchBufferSize, which was passed to
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QemuFwCfgS3CallWhenBootScriptReady().
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@retval RETURN_SUCCESS The opcodes were appended to the ACPI S3
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Boot Script successfully. There is no way
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to undo this action.
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@retval RETURN_INVALID_PARAMETER FirmwareConfigItem is invalid.
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@retval RETURN_BAD_BUFFER_SIZE NumberOfBytes is larger than
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ScratchBufferSize.
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@return Error codes from underlying functions.
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**/
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RETURN_STATUS
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EFIAPI
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QemuFwCfgS3ScriptReadBytes (
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IN INT32 FirmwareConfigItem,
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IN UINTN NumberOfBytes
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)
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{
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ASSERT (FALSE);
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return RETURN_UNSUPPORTED;
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}
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/**
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Produce ACPI S3 Boot Script opcodes that (optionally) select an fw_cfg item,
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and increase its offset.
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If the operation fails during S3 resume, the boot script will hang.
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This function may only be called from the client module's
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FW_CFG_BOOT_SCRIPT_CALLBACK_FUNCTION, which was passed to
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QemuFwCfgS3CallWhenBootScriptReady() as Callback.
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@param[in] FirmwareConfigItem The UINT16 selector key of the firmware config
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item to advance the offset of, expressed as
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INT32. If FirmwareConfigItem is -1, no
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selection is made, and the offset for the
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currently selected item is increased.
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Otherwise, the specified item will be
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selected, and the offset increment will occur
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from offset 0.
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@param[in] NumberOfBytes The number of bytes to skip in the subject
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fw_cfg item.
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@retval RETURN_SUCCESS The opcodes were appended to the ACPI S3
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Boot Script successfully. There is no way
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to undo this action.
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@retval RETURN_INVALID_PARAMETER FirmwareConfigItem is invalid.
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@retval RETURN_BAD_BUFFER_SIZE NumberOfBytes is too large.
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@return Error codes from underlying functions.
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**/
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RETURN_STATUS
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EFIAPI
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QemuFwCfgS3ScriptSkipBytes (
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IN INT32 FirmwareConfigItem,
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IN UINTN NumberOfBytes
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)
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{
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ASSERT (FALSE);
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return RETURN_UNSUPPORTED;
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}
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/**
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Produce ACPI S3 Boot Script opcodes that check a value in ScratchBuffer.
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If the check fails during S3 resume, the boot script will hang.
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This function may only be called from the client module's
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FW_CFG_BOOT_SCRIPT_CALLBACK_FUNCTION, which was passed to
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QemuFwCfgS3CallWhenBootScriptReady() as Callback.
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@param[in] ScratchData Pointer to the UINT8, UINT16, UINT32 or UINT64 field
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in ScratchBuffer that should be checked. The caller
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is responsible for populating the field during S3
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resume, by calling QemuFwCfgS3ScriptReadBytes() ahead
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of QemuFwCfgS3ScriptCheckValue().
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ScratchData must point into ScratchBuffer, which was
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allocated, and passed to Callback(), by
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QemuFwCfgS3CallWhenBootScriptReady().
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ScratchData must be aligned at ValueSize bytes.
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@param[in] ValueSize One of 1, 2, 4 or 8, specifying the size of the field
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to check.
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@param[in] ValueMask The value read from ScratchData is binarily AND-ed
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with ValueMask, and the result is compared against
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Value. If the masked data equals Value, the check
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passes, and the boot script can proceed. Otherwise,
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the check fails, and the boot script hangs.
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@param[in] Value Refer to ValueMask.
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@retval RETURN_SUCCESS The opcodes were appended to the ACPI S3
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Boot Script successfully. There is no way
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to undo this action.
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@retval RETURN_INVALID_PARAMETER ValueSize is invalid.
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@retval RETURN_INVALID_PARAMETER ValueMask or Value cannot be represented in
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ValueSize bytes.
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@retval RETURN_INVALID_PARAMETER ScratchData is not aligned at ValueSize
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bytes.
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@retval RETURN_BAD_BUFFER_SIZE The ValueSize bytes at ScratchData aren't
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wholly contained in the ScratchBufferSize
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bytes at ScratchBuffer.
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@return Error codes from underlying functions.
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**/
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RETURN_STATUS
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EFIAPI
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QemuFwCfgS3ScriptCheckValue (
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IN VOID *ScratchData,
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IN UINT8 ValueSize,
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IN UINT64 ValueMask,
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IN UINT64 Value
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)
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{
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ASSERT (FALSE);
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return RETURN_UNSUPPORTED;
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}
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