4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync CPU DXE Module.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync Copyright (c) 2008 - 2011, Intel Corporation. All rights reserved.<BR>
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync This program and the accompanying materials
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync are licensed and made available under the terms and conditions of the BSD License
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync which accompanies this distribution. The full text of the license may be found at
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync// Global Variables
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncIA32_IDT_GATE_DESCRIPTOR gIdtTable[INTERRUPT_VECTOR_NUMBER] = { 0 };
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncEFI_CPU_INTERRUPT_HANDLER ExternalVectorTable[0x100];
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncUINT64 mValidMtrrAddressMask = MTRR_LIB_CACHE_VALID_ADDRESS;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncUINT64 mValidMtrrBitsMask = MTRR_LIB_MSR_VALID_MASK;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync// Error code flag indicating whether or not an error code will be
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync// pushed on the stack if an exception occurs.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync// 1 means an error code will be pushed, otherwise 0
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync// bit 0 - exception 0
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync// bit 1 - exception 1
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync// Local function prototypes
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync Set Interrupt Descriptor Table Handler Address.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @param Index The Index of the interrupt descriptor table handle.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @param Handler Handler address.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync// CPU Arch Protocol Functions
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync Common exception handler.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @param InterruptType Exception type
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @param SystemContext EFI_SYSTEM_CONTEXT
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync "!!!! IA32 Exception Type - %08x !!!!\n",
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync if ((mErrorCodeFlag & (1 << InterruptType)) != 0) {
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync "ExceptionData - %08x\n",
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync "CS - %04x, EIP - %08x, EFL - %08x, SS - %04x\n",
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync "DS - %04x, ES - %04x, FS - %04x, GS - %04x\n",
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync "EAX - %08x, EBX - %08x, ECX - %08x, EDX - %08x\n",
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync "ESP - %08x, EBP - %08x, ESI - %08x, EDI - %08x\n",
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync "GDT - %08x LIM - %04x, IDT - %08x LIM - %04x\n",
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync "LDT - %08x, TR - %08x\n",
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync "CR0 - %08x, CR2 - %08x, CR3 - %08x, CR4 - %08x\n",
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync "DR0 - %08x, DR1 - %08x, DR2 - %08x, DR3 - %08x\n",
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync "DR6 - %08x, DR7 - %08x\n",
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync "!!!! X64 Exception Type - %016lx !!!!\n",
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync if ((mErrorCodeFlag & (1 << InterruptType)) != 0) {
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync "ExceptionData - %016lx\n",
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync "RIP - %016lx, RFL - %016lx\n",
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync "RAX - %016lx, RCX - %016lx, RDX - %016lx\n",
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync "RBX - %016lx, RSP - %016lx, RBP - %016lx\n",
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync "RSI - %016lx, RDI - %016lx\n",
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync "R8 - %016lx, R9 - %016lx, R10 - %016lx\n",
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync "R11 - %016lx, R12 - %016lx, R13 - %016lx\n",
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync "R14 - %016lx, R15 - %016lx\n",
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync "CS - %04lx, DS - %04lx, ES - %04lx, FS - %04lx, GS - %04lx, SS - %04lx\n",
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync "GDT - %016lx; %04lx, IDT - %016lx; %04lx\n",
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync "LDT - %016lx, TR - %016lx\n",
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync "CR0 - %016lx, CR2 - %016lx, CR3 - %016lx\n",
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync "CR4 - %016lx, CR8 - %016lx\n",
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync "DR0 - %016lx, DR1 - %016lx, DR2 - %016lx\n",
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync "DR3 - %016lx, DR6 - %016lx, DR7 - %016lx\n",
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#error CPU type not supported for exception information dump!
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // Hang the system with CpuSleep so the processor will enter a lower power
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync Flush CPU data cache. If the instruction cache is fully coherent
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync with all DMA operations then function can just return EFI_SUCCESS.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @param This Protocol instance structure
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @param Start Physical address to start flushing from.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @param Length Number of bytes to flush. Round up to chipset
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync granularity.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @param FlushType Specifies the type of flush operation to perform.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @retval EFI_SUCCESS If cache was flushed
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @retval EFI_UNSUPPORTED If flush type is not supported.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @retval EFI_DEVICE_ERROR If requested range could not be flushed.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync if (FlushType == EfiCpuFlushTypeWriteBackInvalidate) {
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync } else if (FlushType == EfiCpuFlushTypeInvalidate) {
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync Enables CPU interrupts.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @param This Protocol instance structure
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @retval EFI_SUCCESS If interrupts were enabled in the CPU
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @retval EFI_DEVICE_ERROR If interrupts could not be enabled on the CPU.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync Disables CPU interrupts.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @param This Protocol instance structure
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @retval EFI_SUCCESS If interrupts were disabled in the CPU.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @retval EFI_DEVICE_ERROR If interrupts could not be disabled on the CPU.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync Return the state of interrupts.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @param This Protocol instance structure
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @param State Pointer to the CPU's current interrupt state
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @retval EFI_SUCCESS If interrupts were disabled in the CPU.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @retval EFI_INVALID_PARAMETER State is NULL.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync Generates an INIT to the CPU.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @param This Protocol instance structure
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @param InitType Type of CPU INIT to perform
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @retval EFI_SUCCESS If CPU INIT occurred. This value should never be
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @retval EFI_DEVICE_ERROR If CPU INIT failed.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @retval EFI_UNSUPPORTED Requested type of CPU INIT not supported.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync Registers a function to be called from the CPU interrupt handler.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @param This Protocol instance structure
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @param InterruptType Defines which interrupt to hook. IA-32
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync valid range is 0x00 through 0xFF
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @param InterruptHandler A pointer to a function of type
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync EFI_CPU_INTERRUPT_HANDLER that is called
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync when a processor interrupt occurs. A null
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync pointer is an error condition.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @retval EFI_SUCCESS If handler installed or uninstalled.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @retval EFI_ALREADY_STARTED InterruptHandler is not NULL, and a handler
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync for InterruptType was previously installed.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @retval EFI_INVALID_PARAMETER InterruptHandler is NULL, and a handler for
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync InterruptType was not previously installed.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @retval EFI_UNSUPPORTED The interrupt specified by InterruptType
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync is not supported.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync if (InterruptHandler == NULL && ExternalVectorTable[InterruptType] == NULL) {
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync if (InterruptHandler != NULL && ExternalVectorTable[InterruptType] != NULL) {
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync SetInterruptDescriptorTableHandlerAddress ((UINTN)InterruptType, NULL);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // Restore the original IDT handler address if InterruptHandler is NULL.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync RestoreInterruptDescriptorTableHandlerAddress ((UINTN)InterruptType);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync ExternalVectorTable[InterruptType] = InterruptHandler;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync Returns a timer value from one of the CPU's internal timers. There is no
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync inherent time interval between ticks but is a function of the CPU frequency.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @param This - Protocol instance structure.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @param TimerIndex - Specifies which CPU timer is requested.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @param TimerValue - Pointer to the returned timer value.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @param TimerPeriod - A pointer to the amount of time that passes
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync in femtoseconds (10-15) for each increment
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync of TimerValue. If TimerValue does not
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync increment at a predictable rate, then 0 is
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync returned. The amount of time that has
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync passed between two calls to GetTimerValue()
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync can be calculated with the formula
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync (TimerValue2 - TimerValue1) * TimerPeriod.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync This parameter is optional and may be NULL.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @retval EFI_SUCCESS - If the CPU timer count was returned.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @retval EFI_UNSUPPORTED - If the CPU does not have any readable timers.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @retval EFI_DEVICE_ERROR - If an error occurred while reading the timer.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @retval EFI_INVALID_PARAMETER - TimerIndex is not valid or TimerValue is NULL.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // BugBug: Hard coded. Don't know how to do this generically
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync Implementation of SetMemoryAttributes() service of CPU Architecture Protocol.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync This function modifies the attributes for the memory region specified by BaseAddress and
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync Length from their current attributes to the attributes specified by Attributes.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @param This The EFI_CPU_ARCH_PROTOCOL instance.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @param BaseAddress The physical address that is the start address of a memory region.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @param Length The size in bytes of the memory region.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @param Attributes The bit mask of attributes to set for the memory region.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @retval EFI_SUCCESS The attributes were set for the memory region.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @retval EFI_ACCESS_DENIED The attributes for the memory resource range specified by
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync BaseAddress and Length cannot be modified.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @retval EFI_INVALID_PARAMETER Length is zero.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync Attributes specified an illegal combination of attributes that
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync cannot be set together.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @retval EFI_OUT_OF_RESOURCES There are not enough system resources to modify the attributes of
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync the memory resource range.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @retval EFI_UNSUPPORTED The processor does not support one or more bytes of the memory
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync resource range specified by BaseAddress and Length.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync The bit mask of attributes is not support for the memory resource
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync range specified by BaseAddress and Length.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // If this function is called because GCD SetMemorySpaceAttributes () is called
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // by RefreshGcdMemoryAttributes (), then we are just synchronzing GCD memory
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // map with MTRR values. So there is no need to modify MTRRs, just return immediately
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // to avoid unnecessary computing.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // call MTRR libary function
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync Initializes the valid bits mask and valid address mask for MTRRs.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync This function initializes the valid bits mask and valid address mask for MTRRs.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync mValidMtrrBitsMask = LShiftU64 (1, PhysicalAddressBits) - 1;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync mValidMtrrAddressMask = mValidMtrrBitsMask & 0xfffffffffffff000ULL;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync mValidMtrrAddressMask = MTRR_LIB_CACHE_VALID_ADDRESS;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync Gets GCD Mem Space type from MTRR Type.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync This function gets GCD Mem Space type from MTRR Type.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @param MtrrAttributes MTRR memory type
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @return GCD Mem Space type
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync Searches memory descriptors covered by given memory range.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync This function searches into the Gcd Memory Space for descriptors
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync (from StartIndex to EndIndex) that contains the memory range
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync specified by BaseAddress and Length.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @param MemorySpaceMap Gcd Memory Space Map as array.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @param NumberOfDescriptors Number of descriptors in map.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @param BaseAddress BaseAddress for the requested range.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @param Length Length for the requested range.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @param StartIndex Start index into the Gcd Memory Space Map.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @param EndIndex End index into the Gcd Memory Space Map.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @retval EFI_SUCCESS Search successfully.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @retval EFI_NOT_FOUND The requested descriptors does not exist.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync IN EFI_GCD_MEMORY_SPACE_DESCRIPTOR *MemorySpaceMap,
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync for (Index = 0; Index < NumberOfDescriptors; Index++) {
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync if (BaseAddress >= MemorySpaceMap[Index].BaseAddress &&
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync BaseAddress < MemorySpaceMap[Index].BaseAddress + MemorySpaceMap[Index].Length) {
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync if (BaseAddress + Length - 1 >= MemorySpaceMap[Index].BaseAddress &&
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync BaseAddress + Length - 1 < MemorySpaceMap[Index].BaseAddress + MemorySpaceMap[Index].Length) {
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync Sets the attributes for a specified range in Gcd Memory Space Map.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync This function sets the attributes for a specified range in
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync Gcd Memory Space Map.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @param MemorySpaceMap Gcd Memory Space Map as array
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @param NumberOfDescriptors Number of descriptors in map
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @param BaseAddress BaseAddress for the range
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @param Length Length for the range
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @param Attributes Attributes to set
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @retval EFI_SUCCESS Memory attributes set successfully
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @retval EFI_NOT_FOUND The specified range does not exist in Gcd Memory Space
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync IN EFI_GCD_MEMORY_SPACE_DESCRIPTOR *MemorySpaceMap,
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // Get all memory descriptors covered by the memory range
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // Go through all related descriptors and set attributes accordingly
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync for (Index = StartIndex; Index <= EndIndex; Index++) {
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync if (MemorySpaceMap[Index].GcdMemoryType == EfiGcdMemoryTypeNonExistent) {
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // Calculate the start and end address of the overlapping range
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync if (BaseAddress >= MemorySpaceMap[Index].BaseAddress) {
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync if (BaseAddress + Length - 1 < MemorySpaceMap[Index].BaseAddress + MemorySpaceMap[Index].Length) {
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync RegionLength = MemorySpaceMap[Index].BaseAddress + MemorySpaceMap[Index].Length - RegionStart;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // Set memory attributes according to MTRR attribute and the original attribute of descriptor
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync (MemorySpaceMap[Index].Attributes & ~EFI_MEMORY_CACHETYPE_MASK) | (MemorySpaceMap[Index].Capabilities & Attributes)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync Refreshes the GCD Memory Space attributes according to MTRRs.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync This function refreshes the GCD Memory Space attributes according to MTRRs.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync VARIABLE_MTRR VariableMtrr[MTRR_NUMBER_OF_VARIABLE_MTRR];
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync FirmwareVariableMtrrCount = GetFirmwareVariableMtrrCount ();
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync ASSERT (FirmwareVariableMtrrCount <= MTRR_NUMBER_OF_VARIABLE_MTRR);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // Initialize the valid bits mask and valid address mask for MTRRs
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // Get the memory attribute of variable MTRRs
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // Get the memory space map from GCD
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync DefaultMemoryType = (UINT8) MtrrGetDefaultMemoryType ();
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync DefaultAttributes = GetMemorySpaceAttributeFromMtrrType (DefaultMemoryType);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // Set default attributes to all spaces.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync for (Index = 0; Index < NumberOfDescriptors; Index++) {
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync if (MemorySpaceMap[Index].GcdMemoryType == EfiGcdMemoryTypeNonExistent) {
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync (MemorySpaceMap[Index].Attributes & ~EFI_MEMORY_CACHETYPE_MASK) |
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync (MemorySpaceMap[Index].Capabilities & DefaultAttributes)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // Go for variable MTRRs with WB attribute
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync for (Index = 0; Index < FirmwareVariableMtrrCount; Index++) {
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync VariableMtrr[Index].Type == MTRR_CACHE_WRITE_BACK) {
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // Go for variable MTRRs with the attribute except for WB and UC attributes
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync for (Index = 0; Index < FirmwareVariableMtrrCount; Index++) {
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync VariableMtrr[Index].Type != MTRR_CACHE_WRITE_BACK &&
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync VariableMtrr[Index].Type != MTRR_CACHE_UNCACHEABLE) {
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync Attributes = GetMemorySpaceAttributeFromMtrrType ((UINT8) VariableMtrr[Index].Type);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // Go for variable MTRRs with UC attribute
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync for (Index = 0; Index < FirmwareVariableMtrrCount; Index++) {
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync VariableMtrr[Index].Type == MTRR_CACHE_UNCACHEABLE) {
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // Go for fixed MTRRs
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync for (Index = 0; Index < MTRR_NUMBER_OF_FIXED_MTRR; Index++) {
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // Check for continuous fixed MTRR sections
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync MtrrType = (UINT8) RShiftU64 (RegValue, SubIndex * 8);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync CurrentAttributes = GetMemorySpaceAttributeFromMtrrType (MtrrType);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // A new MTRR attribute begins
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // If fixed MTRR attribute changed, then set memory attribute for previous atrribute
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync BaseAddress = mFixedMtrrTable[Index].BaseAddress + mFixedMtrrTable[Index].Length * SubIndex;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // Handle the last fixed MTRR region
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // Free memory space map allocated by GCD service GetMemorySpaceMap ()
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync Set Interrupt Descriptor Table Handler Address.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @param Index The Index of the interrupt descriptor table handle.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @param Handler Handler address.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync UintnHandler = ((UINTN) AsmIdtVector00) + (8 * Index);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync gIdtTable[Index].Bits.OffsetLow = (UINT16)UintnHandler;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync gIdtTable[Index].Bits.GateType = IA32_IDT_GATE_TYPE_INTERRUPT_32;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync gIdtTable[Index].Bits.OffsetHigh = (UINT16)(UintnHandler >> 16);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync gIdtTable[Index].Bits.OffsetUpper = (UINT32)(UintnHandler >> 32);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync Restore original Interrupt Descriptor Table Handler Address.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @param Index The Index of the interrupt descriptor table handle.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync gIdtTable[Index].Bits.OffsetLow = mOrigIdtEntry[Index].Bits.OffsetLow;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync gIdtTable[Index].Bits.OffsetHigh = mOrigIdtEntry[Index].Bits.OffsetHigh;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync gIdtTable[Index].Bits.OffsetUpper = mOrigIdtEntry[Index].Bits.OffsetUpper;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync Initialize Interrupt Descriptor Table for interrupt handling.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync SetMem (ExternalVectorTable, sizeof(ExternalVectorTable), 0);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // Get original IDT address and size.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync if ((OldIdtPtr.Base != 0) && ((OldIdtPtr.Limit & 7) == 7)) {
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync OldIdt = (IA32_IDT_GATE_DESCRIPTOR*) OldIdtPtr.Base;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync OldIdtSize = (OldIdtPtr.Limit + 1) / sizeof (IA32_IDT_GATE_DESCRIPTOR);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // Save original IDT entry and IDT entry count.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync mOrigIdtEntry = AllocateCopyPool (OldIdtPtr.Limit + 1, (VOID *) OldIdtPtr.Base);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // Intialize IDT
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync for (Index = 0; Index < INTERRUPT_VECTOR_NUMBER; Index ++) {
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // If the old IDT had a handler for this interrupt, then
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // preserve it.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync gIdtTable[Index].Bits.GateType = IA32_IDT_GATE_TYPE_INTERRUPT_32;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync SetInterruptDescriptorTableHandlerAddress (Index, IntHandler);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // Load IDT Pointer
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync IdtPtrAlignmentBuffer = AllocatePool (sizeof (*IdtPtr) + 16);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync IdtPtr = ALIGN_POINTER (IdtPtrAlignmentBuffer, 16);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync IdtPtr->Base = (UINT32)(((UINTN)(VOID*) gIdtTable) & (BASE_4GB-1));
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // Initialize Exception Handlers
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync Status = CpuRegisterInterruptHandler (&gCpu, Index, CommonExceptionHandler);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // Set the pointer to the array of C based exception handling routines.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync InitializeExternalVectorTablePtr (ExternalVectorTable);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync Callback function for idle events.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @param Event Event whose notification function is being invoked.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @param Context The pointer to the notification function's context,
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync which is implementation-dependent.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync Initialize the state information for the CPU Architectural Protocol.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @param ImageHandle Image handle this driver.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @param SystemTable Pointer to the System Table.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @retval EFI_SUCCESS Thread can be successfully created
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @retval EFI_OUT_OF_RESOURCES Cannot allocate protocol data structure
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @retval EFI_DEVICE_ERROR Cannot create the thread
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // Make sure interrupts are disabled
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // Init GDT for DXE
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // Setup IDT pointer, IDT and interrupt entry points
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // Install CPU Architectural Protocol
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // Refresh GCD memory space map according to MTRR value.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // Setup a callback for idle events