mirror of https://github.com/acidanthera/audk.git
535 lines
12 KiB
C
535 lines
12 KiB
C
/**@file
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Copyright (c) 2006 - 2009, Intel Corporation
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All rights reserved. This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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Module Name:
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Cpu.c
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Abstract:
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NT Emulation Architectural Protocol Driver as defined in Tiano.
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This CPU module abstracts the interrupt subsystem of a platform and
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the CPU-specific setjump/long pair. Other services are not implemented
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in this driver.
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**/
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#include "CpuDriver.h"
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CPU_ARCH_PROTOCOL_PRIVATE mCpuTemplate = {
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CPU_ARCH_PROT_PRIVATE_SIGNATURE,
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NULL,
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{
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WinNtFlushCpuDataCache,
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WinNtEnableInterrupt,
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WinNtDisableInterrupt,
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WinNtGetInterruptState,
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WinNtInit,
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WinNtRegisterInterruptHandler,
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WinNtGetTimerValue,
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WinNtSetMemoryAttributes,
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0,
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4
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},
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{
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CpuMemoryServiceRead,
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CpuMemoryServiceWrite,
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CpuIoServiceRead,
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CpuIoServiceWrite
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},
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0,
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TRUE
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};
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#define EFI_CPU_DATA_MAXIMUM_LENGTH 0x100
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//
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// Service routines for the driver
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//
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EFI_STATUS
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EFIAPI
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WinNtFlushCpuDataCache (
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IN EFI_CPU_ARCH_PROTOCOL *This,
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IN EFI_PHYSICAL_ADDRESS Start,
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IN UINT64 Length,
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IN EFI_CPU_FLUSH_TYPE FlushType
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)
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/*++
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Routine Description:
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This routine would provide support for flushing the CPU data cache.
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In the case of NT emulation environment, this flushing is not necessary and
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is thus not implemented.
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Arguments:
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Pointer to CPU Architectural Protocol interface
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Start adddress in memory to flush
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Length of memory to flush
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Flush type
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Returns:
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Status
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EFI_SUCCESS
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--*/
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// TODO: This - add argument and description to function comment
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// TODO: FlushType - add argument and description to function comment
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// TODO: EFI_UNSUPPORTED - add return value to function comment
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{
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if (FlushType == EfiCpuFlushTypeWriteBackInvalidate) {
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//
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// Only WB flush is supported. We actually need do nothing on NT emulator
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// environment. Classify this to follow EFI spec
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//
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return EFI_SUCCESS;
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}
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//
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// Other flush types are not supported by NT emulator
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//
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return EFI_UNSUPPORTED;
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}
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EFI_STATUS
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EFIAPI
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WinNtEnableInterrupt (
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IN EFI_CPU_ARCH_PROTOCOL *This
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)
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/*++
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Routine Description:
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This routine provides support for emulation of the interrupt enable of the
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the system. For our purposes, CPU enable is just a BOOLEAN that the Timer
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Architectural Protocol observes in order to defer behaviour while in its
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emulated interrupt, or timer tick.
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Arguments:
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Pointer to CPU Architectural Protocol interface
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Returns:
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Status
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EFI_SUCCESS
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--*/
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// TODO: This - add argument and description to function comment
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{
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CPU_ARCH_PROTOCOL_PRIVATE *Private;
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Private = CPU_ARCH_PROTOCOL_PRIVATE_DATA_FROM_THIS (This);
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Private->InterruptState = TRUE;
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return EFI_SUCCESS;
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}
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EFI_STATUS
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EFIAPI
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WinNtDisableInterrupt (
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IN EFI_CPU_ARCH_PROTOCOL *This
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)
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/*++
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Routine Description:
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This routine provides support for emulation of the interrupt disable of the
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the system. For our purposes, CPU enable is just a BOOLEAN that the Timer
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Architectural Protocol observes in order to defer behaviour while in its
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emulated interrupt, or timer tick.
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Arguments:
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Pointer to CPU Architectural Protocol interface
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Returns:
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Status
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EFI_SUCCESS
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--*/
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// TODO: This - add argument and description to function comment
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{
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CPU_ARCH_PROTOCOL_PRIVATE *Private;
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Private = CPU_ARCH_PROTOCOL_PRIVATE_DATA_FROM_THIS (This);
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Private->InterruptState = FALSE;
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return EFI_SUCCESS;
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}
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EFI_STATUS
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EFIAPI
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WinNtGetInterruptState (
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IN EFI_CPU_ARCH_PROTOCOL *This,
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OUT BOOLEAN *State
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)
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/*++
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Routine Description:
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This routine provides support for emulation of the interrupt disable of the
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the system. For our purposes, CPU enable is just a BOOLEAN that the Timer
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Architectural Protocol observes in order to defer behaviour while in its
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emulated interrupt, or timer tick.
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Arguments:
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Pointer to CPU Architectural Protocol interface
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Returns:
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Status
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EFI_SUCCESS
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--*/
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// TODO: This - add argument and description to function comment
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// TODO: State - add argument and description to function comment
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// TODO: EFI_INVALID_PARAMETER - add return value to function comment
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{
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CPU_ARCH_PROTOCOL_PRIVATE *Private;
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if (State == NULL) {
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return EFI_INVALID_PARAMETER;
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}
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Private = CPU_ARCH_PROTOCOL_PRIVATE_DATA_FROM_THIS (This);
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*State = Private->InterruptState;
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return EFI_SUCCESS;
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}
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EFI_STATUS
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EFIAPI
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WinNtInit (
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IN EFI_CPU_ARCH_PROTOCOL *This,
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IN EFI_CPU_INIT_TYPE InitType
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)
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/*++
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Routine Description:
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This routine would support generation of a CPU INIT. At
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present, this code does not provide emulation.
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Arguments:
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Pointer to CPU Architectural Protocol interface
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INIT Type
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Returns:
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Status
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EFI_UNSUPPORTED - not yet implemented
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--*/
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// TODO: This - add argument and description to function comment
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// TODO: InitType - add argument and description to function comment
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{
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return EFI_UNSUPPORTED;
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}
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EFI_STATUS
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EFIAPI
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WinNtRegisterInterruptHandler (
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IN EFI_CPU_ARCH_PROTOCOL *This,
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IN EFI_EXCEPTION_TYPE InterruptType,
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IN EFI_CPU_INTERRUPT_HANDLER InterruptHandler
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)
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/*++
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Routine Description:
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This routine would support registration of an interrupt handler. At
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present, this code does not provide emulation.
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Arguments:
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Pointer to CPU Architectural Protocol interface
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Pointer to interrupt handlers
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Interrupt type
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Returns:
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Status
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EFI_UNSUPPORTED - not yet implemented
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--*/
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// TODO: This - add argument and description to function comment
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// TODO: InterruptType - add argument and description to function comment
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// TODO: InterruptHandler - add argument and description to function comment
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{
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//
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// Do parameter checking for EFI spec conformance
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//
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if (InterruptType < 0 || InterruptType > 0xff) {
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return EFI_UNSUPPORTED;
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}
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//
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// Do nothing for Nt32 emulation
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//
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return EFI_UNSUPPORTED;
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}
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EFI_STATUS
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EFIAPI
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WinNtGetTimerValue (
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IN EFI_CPU_ARCH_PROTOCOL *This,
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IN UINT32 TimerIndex,
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OUT UINT64 *TimerValue,
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OUT UINT64 *TimerPeriod OPTIONAL
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)
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/*++
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Routine Description:
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This routine would support querying of an on-CPU timer. At present,
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this code does not provide timer emulation.
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Arguments:
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This - Pointer to CPU Architectural Protocol interface
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TimerIndex - Index of given CPU timer
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TimerValue - Output of the timer
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TimerPeriod - Output of the timer period
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Returns:
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EFI_UNSUPPORTED - not yet implemented
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EFI_INVALID_PARAMETER - TimeValue is NULL
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--*/
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{
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if (TimerValue == NULL) {
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return EFI_INVALID_PARAMETER;
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}
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//
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// No timer supported
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//
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return EFI_UNSUPPORTED;
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}
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EFI_STATUS
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EFIAPI
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WinNtSetMemoryAttributes (
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IN EFI_CPU_ARCH_PROTOCOL *This,
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IN EFI_PHYSICAL_ADDRESS BaseAddress,
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IN UINT64 Length,
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IN UINT64 Attributes
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)
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/*++
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Routine Description:
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This routine would support querying of an on-CPU timer. At present,
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this code does not provide timer emulation.
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Arguments:
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Pointer to CPU Architectural Protocol interface
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Start address of memory region
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The size in bytes of the memory region
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The bit mask of attributes to set for the memory region
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Returns:
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Status
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EFI_UNSUPPORTED - not yet implemented
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--*/
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// TODO: This - add argument and description to function comment
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// TODO: BaseAddress - add argument and description to function comment
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// TODO: Length - add argument and description to function comment
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// TODO: Attributes - add argument and description to function comment
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// TODO: EFI_INVALID_PARAMETER - add return value to function comment
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{
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//
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// Check for invalid parameter for Spec conformance
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//
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if (Length == 0) {
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return EFI_INVALID_PARAMETER;
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}
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//
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// Do nothing for Nt32 emulation
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//
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return EFI_UNSUPPORTED;
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}
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/**
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Logs SMBIOS record.
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@param Smbios Pointer to SMBIOS protocol instance.
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@param Buffer Pointer to the data buffer.
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**/
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VOID
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LogSmbiosData (
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IN EFI_SMBIOS_PROTOCOL *Smbios,
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IN UINT8 *Buffer
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)
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{
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EFI_STATUS Status;
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EFI_SMBIOS_HANDLE SmbiosHandle;
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SmbiosHandle = 0;
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Status = Smbios->Add (
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Smbios,
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NULL,
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&SmbiosHandle,
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(EFI_SMBIOS_TABLE_HEADER*)Buffer
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);
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ASSERT_EFI_ERROR (Status);
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}
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VOID
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CpuUpdateSmbios (
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VOID
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)
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/*++
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Routine Description:
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This function will log processor version and frequency data to Smbios.
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Arguments:
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Event - Event whose notification function is being invoked.
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Context - Pointer to the notification function's context.
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Returns:
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None.
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--*/
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{
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EFI_STATUS Status;
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UINT32 TotalSize;
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EFI_SMBIOS_PROTOCOL *Smbios;
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EFI_HII_HANDLE HiiHandle;
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STRING_REF Token;
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UINTN CpuVerStrLen;
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EFI_STRING CpuVerStr;
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SMBIOS_TABLE_TYPE4 *SmbiosRecord;
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CHAR8 *OptionalStrStart;
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//
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// Locate Smbios protocol.
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//
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Status = gBS->LocateProtocol (&gEfiSmbiosProtocolGuid, NULL, (VOID **)&Smbios);
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if (EFI_ERROR (Status)) {
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return;
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}
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//
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// Initialize strings to HII database
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//
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HiiHandle = HiiAddPackages (
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&gEfiCallerIdGuid,
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NULL,
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CpuStrings,
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NULL
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);
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ASSERT (HiiHandle != NULL);
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Token = STRING_TOKEN (STR_PROCESSOR_VERSION);
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CpuVerStr = HiiGetPackageString(&gEfiCallerIdGuid, Token, NULL);
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CpuVerStrLen = StrLen(CpuVerStr);
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ASSERT (CpuVerStrLen <= SMBIOS_STRING_MAX_LENGTH);
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TotalSize = sizeof(SMBIOS_TABLE_TYPE4) + CpuVerStrLen + 1 + 1;
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SmbiosRecord = AllocatePool(TotalSize);
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ZeroMem(SmbiosRecord, TotalSize);
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SmbiosRecord->Hdr.Type = EFI_SMBIOS_TYPE_PROCESSOR_INFORMATION;
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SmbiosRecord->Hdr.Length = sizeof (SMBIOS_TABLE_TYPE4);
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//
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// Make handle chosen by smbios protocol.add automatically.
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//
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SmbiosRecord->Hdr.Handle = 0;
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//
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// Processor version is the 1st string.
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//
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SmbiosRecord->ProcessorVersion = 1;
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//
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// Store CPU frequency data record to data hub - It's an emulator so make up a value
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//
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SmbiosRecord->CurrentSpeed = 1234;
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OptionalStrStart = (CHAR8 *)(SmbiosRecord + 1);
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UnicodeStrToAsciiStr(CpuVerStr, OptionalStrStart);
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//
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// Now we have got the full smbios record, call smbios protocol to add this record.
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//
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LogSmbiosData(Smbios, (UINT8 *) SmbiosRecord);
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FreePool (SmbiosRecord);
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}
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EFI_STATUS
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EFIAPI
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InitializeCpu (
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IN EFI_HANDLE ImageHandle,
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IN EFI_SYSTEM_TABLE *SystemTable
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)
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/*++
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Routine Description:
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Initialize the state information for the CPU Architectural Protocol
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Arguments:
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ImageHandle of the loaded driver
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Pointer to the System Table
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Returns:
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Status
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EFI_SUCCESS - protocol instance can be published
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EFI_OUT_OF_RESOURCES - cannot allocate protocol data structure
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EFI_DEVICE_ERROR - cannot create the thread
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--*/
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{
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EFI_STATUS Status;
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CpuUpdateSmbios ();
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Status = gBS->InstallMultipleProtocolInterfaces (
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&mCpuTemplate.Handle,
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&gEfiCpuArchProtocolGuid, &mCpuTemplate.Cpu,
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&gEfiCpuIo2ProtocolGuid, &mCpuTemplate.CpuIo,
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NULL
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);
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ASSERT_EFI_ERROR (Status);
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return Status;
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}
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