diff options
Diffstat (limited to 'OvmfPkg/Library/QemuFwCfgLib/QemuFwCfgLib.c')
| -rw-r--r-- | OvmfPkg/Library/QemuFwCfgLib/QemuFwCfgLib.c | 325 |
1 files changed, 0 insertions, 325 deletions
diff --git a/OvmfPkg/Library/QemuFwCfgLib/QemuFwCfgLib.c b/OvmfPkg/Library/QemuFwCfgLib/QemuFwCfgLib.c deleted file mode 100644 index 5c96d2af25..0000000000 --- a/OvmfPkg/Library/QemuFwCfgLib/QemuFwCfgLib.c +++ /dev/null @@ -1,325 +0,0 @@ -/** @file
-
- Copyright (c) 2011 - 2013, Intel Corporation. All rights reserved.<BR>
- Copyright (C) 2013, Red Hat, Inc.
-
- This program and the accompanying materials
- are licensed and made available under the terms and conditions of the BSD License
- which accompanies this distribution. The full text of the license may be found at
- http://opensource.org/licenses/bsd-license.php
-
- THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
- WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
-
-**/
-
-#include "Uefi.h"
-#include <Library/BaseLib.h>
-#include <Library/BaseMemoryLib.h>
-#include <Library/DebugLib.h>
-#include <Library/IoLib.h>
-#include <Library/QemuFwCfgLib.h>
-#include <Library/MemoryAllocationLib.h>
-#include <Library/UefiBootServicesTableLib.h>
-
-
-/**
- Reads an 8-bit I/O port fifo into a block of memory.
-
- Reads the 8-bit I/O fifo port specified by Port.
-
- The port is read Count times, and the read data is
- stored in the provided Buffer.
-
- This function must guarantee that all I/O read and write operations are
- serialized.
-
- If 8-bit I/O port operations are not supported, then ASSERT().
-
- @param Port The I/O port to read.
- @param Count The number of times to read I/O port.
- @param Buffer The buffer to store the read data into.
-
-**/
-VOID
-EFIAPI
-IoReadFifo8 (
- IN UINTN Port,
- IN UINTN Count,
- OUT VOID *Buffer
- );
-
-/**
- Writes an 8-bit I/O port fifo from a block of memory.
-
- Writes the 8-bit I/O fifo port specified by Port.
-
- The port is written Count times, and the data are obtained
- from the provided Buffer.
-
- This function must guarantee that all I/O read and write operations are
- serialized.
-
- If 8-bit I/O port operations are not supported, then ASSERT().
-
- @param Port The I/O port to read.
- @param Count The number of times to read I/O port.
- @param Buffer The buffer to store the read data into.
-
-**/
-VOID
-EFIAPI
-IoWriteFifo8 (
- IN UINTN Port,
- IN UINTN Count,
- OUT VOID *Buffer
- );
-
-
-/**
- Selects a firmware configuration item for reading.
-
- Following this call, any data read from this item will start from
- the beginning of the configuration item's data.
-
- @param[in] QemuFwCfgItem - Firmware Configuration item to read
-
-**/
-VOID
-EFIAPI
-QemuFwCfgSelectItem (
- IN FIRMWARE_CONFIG_ITEM QemuFwCfgItem
- )
-{
- DEBUG ((EFI_D_INFO, "Select Item: 0x%x\n", (UINT16)(UINTN) QemuFwCfgItem));
- IoWrite16 (0x510, (UINT16)(UINTN) QemuFwCfgItem);
-}
-
-
-/**
- Reads firmware configuration bytes into a buffer
-
- @param[in] Size - Size in bytes to read
- @param[in] Buffer - Buffer to store data into (OPTIONAL if Size is 0)
-
-**/
-VOID
-EFIAPI
-InternalQemuFwCfgReadBytes (
- IN UINTN Size,
- IN VOID *Buffer OPTIONAL
- )
-{
- IoReadFifo8 (0x511, Size, Buffer);
-}
-
-
-/**
- Reads firmware configuration bytes into a buffer
-
- If called multiple times, then the data read will
- continue at the offset of the firmware configuration
- item where the previous read ended.
-
- @param[in] Size - Size in bytes to read
- @param[in] Buffer - Buffer to store data into
-
-**/
-VOID
-EFIAPI
-QemuFwCfgReadBytes (
- IN UINTN Size,
- IN VOID *Buffer
- )
-{
- if (InternalQemuFwCfgIsAvailable ()) {
- InternalQemuFwCfgReadBytes (Size, Buffer);
- } else {
- ZeroMem (Buffer, Size);
- }
-}
-
-/**
- Write firmware configuration bytes from a buffer
-
- If called multiple times, then the data written will
- continue at the offset of the firmware configuration
- item where the previous write ended.
-
- @param[in] Size - Size in bytes to write
- @param[in] Buffer - Buffer to read data from
-
-**/
-VOID
-EFIAPI
-QemuFwCfgWriteBytes (
- IN UINTN Size,
- IN VOID *Buffer
- )
-{
- if (InternalQemuFwCfgIsAvailable ()) {
- IoWriteFifo8 (0x511, Size, Buffer);
- }
-}
-
-
-/**
- Reads a UINT8 firmware configuration value
-
- @return Value of Firmware Configuration item read
-
-**/
-UINT8
-EFIAPI
-QemuFwCfgRead8 (
- VOID
- )
-{
- UINT8 Result;
-
- QemuFwCfgReadBytes (sizeof (Result), &Result);
-
- return Result;
-}
-
-
-/**
- Reads a UINT16 firmware configuration value
-
- @return Value of Firmware Configuration item read
-
-**/
-UINT16
-EFIAPI
-QemuFwCfgRead16 (
- VOID
- )
-{
- UINT16 Result;
-
- QemuFwCfgReadBytes (sizeof (Result), &Result);
-
- return Result;
-}
-
-
-/**
- Reads a UINT32 firmware configuration value
-
- @return Value of Firmware Configuration item read
-
-**/
-UINT32
-EFIAPI
-QemuFwCfgRead32 (
- VOID
- )
-{
- UINT32 Result;
-
- QemuFwCfgReadBytes (sizeof (Result), &Result);
-
- return Result;
-}
-
-
-/**
- Reads a UINT64 firmware configuration value
-
- @return Value of Firmware Configuration item read
-
-**/
-UINT64
-EFIAPI
-QemuFwCfgRead64 (
- VOID
- )
-{
- UINT64 Result;
-
- QemuFwCfgReadBytes (sizeof (Result), &Result);
-
- return Result;
-}
-
-
-/**
- Find the configuration item corresponding to the firmware configuration file.
-
- @param[in] Name - Name of file to look up.
- @param[out] Item - Configuration item corresponding to the file, to be passed
- to QemuFwCfgSelectItem ().
- @param[out] Size - Number of bytes in the file.
-
- @return RETURN_SUCCESS If file is found.
- RETURN_NOT_FOUND If file is not found.
- RETURN_UNSUPPORTED If firmware configuration is unavailable.
-
-**/
-RETURN_STATUS
-EFIAPI
-QemuFwCfgFindFile (
- IN CONST CHAR8 *Name,
- OUT FIRMWARE_CONFIG_ITEM *Item,
- OUT UINTN *Size
- )
-{
- UINT32 Count;
- UINT32 Idx;
-
- if (!InternalQemuFwCfgIsAvailable ()) {
- return RETURN_UNSUPPORTED;
- }
-
- QemuFwCfgSelectItem (QemuFwCfgItemFileDir);
- Count = SwapBytes32 (QemuFwCfgRead32 ());
-
- for (Idx = 0; Idx < Count; ++Idx) {
- UINT32 FileSize;
- UINT16 FileSelect;
- UINT16 FileReserved;
- CHAR8 FName[QEMU_FW_CFG_FNAME_SIZE];
-
- FileSize = QemuFwCfgRead32 ();
- FileSelect = QemuFwCfgRead16 ();
- FileReserved = QemuFwCfgRead16 ();
- (VOID) FileReserved; /* Force a do-nothing reference. */
- InternalQemuFwCfgReadBytes (sizeof (FName), FName);
-
- if (AsciiStrCmp (Name, FName) == 0) {
- *Item = SwapBytes16 (FileSelect);
- *Size = SwapBytes32 (FileSize);
- return RETURN_SUCCESS;
- }
- }
-
- return RETURN_NOT_FOUND;
-}
-
-
-/**
- Determine if S3 support is explicitly enabled.
-
- @retval TRUE if S3 support is explicitly enabled.
- FALSE otherwise. This includes unavailability of the firmware
- configuration interface.
-**/
-BOOLEAN
-EFIAPI
-QemuFwCfgS3Enabled (
- VOID
- )
-{
- RETURN_STATUS Status;
- FIRMWARE_CONFIG_ITEM FwCfgItem;
- UINTN FwCfgSize;
- UINT8 SystemStates[6];
-
- Status = QemuFwCfgFindFile ("etc/system-states", &FwCfgItem, &FwCfgSize);
- if (Status != RETURN_SUCCESS || FwCfgSize != sizeof SystemStates) {
- return FALSE;
- }
- QemuFwCfgSelectItem (FwCfgItem);
- QemuFwCfgReadBytes (sizeof SystemStates, SystemStates);
- return (BOOLEAN) (SystemStates[3] & BIT7);
-}
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