598 lines
16 KiB
C
598 lines
16 KiB
C
/** @file
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Default instance of MemLogLib library for simple log services to memory buffer.
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**/
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#include <Uefi.h>
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#include <Library/BaseLib.h>
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#include <Library/PrintLib.h>
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#include <Library/BaseMemoryLib.h>
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#include <Library/MemoryAllocationLib.h>
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#include <Library/UefiBootServicesTableLib.h>
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#include <Library/MemLogLib.h>
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#include <Library/DebugLib.h>
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#include <Library/SerialPortLib.h>
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#include <Library/DebugPrintErrorLevelLib.h>
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#include <Library/IoLib.h>
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#include <Library/PciLib.h>
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#include "GenericIch.h"
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#include <Library/printf_lite.h>
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//
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// Struct for holding mem buffer.
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//
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typedef struct {
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CHAR8 *Buffer;
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CHAR8 *Cursor;
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UINTN BufferSize;
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MEM_LOG_CALLBACK Callback;
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/// Start debug ticks.
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UINT64 TscStart;
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/// Last debug ticks.
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UINT64 TscLast;
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/// TSC ticks per second.
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UINT64 TscFreqSec;
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} MEM_LOG;
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//
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// Guid for internal protocol for publishing mem log buffer.
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//
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EFI_GUID mMemLogProtocolGuid = { 0x74B91DA4, 0x2B4C, 0x11E2, {0x99, 0x03, 0x22, 0xF0, 0x61, 0x88, 0x70, 0x9B } };
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//
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// Pointer to mem log buffer.
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//
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MEM_LOG *mMemLog = NULL;
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//
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// Buffer for debug time.
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//
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CHAR8 mTimingTxt[32];
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/**
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Inits mem log.
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@retval EFI_SUCCESS The constructor always returns EFI_SUCCESS.
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**/
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CHAR8*
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GetTiming(VOID)
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{
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UINT64 dTStartSec;
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UINT64 dTStartMs;
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UINT64 dTLastSec;
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UINT64 dTLastMs;
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UINT64 CurrentTsc;
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mTimingTxt[0] = '\0';
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if (mMemLog != NULL && mMemLog->TscFreqSec != 0) {
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CurrentTsc = AsmReadTsc();
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dTStartMs = DivU64x64Remainder(MultU64x32(CurrentTsc - mMemLog->TscStart, 1000), mMemLog->TscFreqSec, NULL);
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dTStartSec = DivU64x64Remainder(dTStartMs, 1000, &dTStartMs);
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dTLastMs = DivU64x64Remainder(MultU64x32(CurrentTsc - mMemLog->TscLast, 1000), mMemLog->TscFreqSec, NULL);
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dTLastSec = DivU64x64Remainder(dTLastMs, 1000, &dTLastMs);
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AsciiSPrint(mTimingTxt, sizeof(mTimingTxt),
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"%ld:%03ld %ld:%03ld", dTStartSec, dTStartMs, dTLastSec, dTLastMs);
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mMemLog->TscLast = CurrentTsc;
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}
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return mTimingTxt;
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}
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/**
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Inits mem log.
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@retval EFI_SUCCESS The constructor always returns EFI_SUCCESS.
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**/
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EFI_STATUS
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EFIAPI
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MemLogInit (
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VOID
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)
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{
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EFI_STATUS Status;
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UINT32 TimerAddr = 0;
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UINT64 Tsc0, Tsc1;
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UINT32 AcpiTick0, AcpiTick1, AcpiTicksDelta, AcpiTicksTarget;
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CHAR8 InitError[50];
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if (mMemLog != NULL) {
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return EFI_SUCCESS;
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}
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//
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// Try to use existing MEM_LOG
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//
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Status = gBS->LocateProtocol (&mMemLogProtocolGuid, NULL, (VOID **) &mMemLog);
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if (Status == EFI_SUCCESS && mMemLog != NULL) {
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//
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// We are inited with existing MEM_LOG
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//
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return EFI_SUCCESS;
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}
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//
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// Set up and publish new MEM_LOG
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//
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mMemLog = AllocateZeroPool( sizeof (MEM_LOG) );
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if (mMemLog == NULL) {
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return EFI_OUT_OF_RESOURCES;
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}
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mMemLog->BufferSize = MEM_LOG_INITIAL_SIZE;
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mMemLog->Buffer = AllocateZeroPool(MEM_LOG_INITIAL_SIZE);
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mMemLog->Cursor = mMemLog->Buffer;
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mMemLog->Callback = NULL;
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//
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// Calibrate TSC for timings
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//
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InitError[0]='\0';
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// We will try to calibrate TSC frequency according to the ACPI Power Management Timer.
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// The ACPI PM Timer is running at a universal known frequency of 3579545Hz.
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// So, we wait 357954 clocks of the ACPI timer (100ms), and compare with how much TSC advanced.
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// This seems to provide a much more accurate calibration than using gBS->Stall(), especially on UEFI machines, and is important as this value is used later to calculate FSBFrequency.
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// Check if we can use the timer - we need to be on Intel ICH, get ACPI PM Timer Address from PCI, and check that it's sane
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if ((PciRead16 (PCI_ICH_LPC_ADDRESS (0))) != 0x8086) { // Intel ICH device was not found
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AsciiSPrint(InitError, sizeof(InitError), "Intel ICH device was not found.");
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} else if ((PciRead8 (PCI_ICH_LPC_ADDRESS (R_ICH_LPC_ACPI_CNT)) & B_ICH_LPC_ACPI_CNT_ACPI_EN) == 0) { // Check for TSC at LPC (default location)
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/* if ((PciRead8 (PCI_ICH_SMBUS_ADDRESS (R_ICH_SMBUS_ACPI_CNT)) & B_ICH_SMBUS_ACPI_CNT_ACPI_EN) != 0) { // Check for TSC at SMBUS (Skylake specific)
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TimerAddr = (PciRead16 (PCI_ICH_SMBUS_ADDRESS (R_ICH_SMBUS_ACPI_BASE)) & B_ICH_SMBUS_ACPI_BASE_BAR) + R_ACPI_PM1_TMR;
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} else { */
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AsciiSPrint(InitError, sizeof(InitError), "ACPI I/O space is not enabled.");
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// }
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} else if ((TimerAddr = ((PciRead16 (PCI_ICH_LPC_ADDRESS (R_ICH_LPC_ACPI_BASE))) & B_ICH_LPC_ACPI_BASE_BAR) + R_ACPI_PM1_TMR) == 0) { // Timer address can't be obtained
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AsciiSPrint(InitError, sizeof(InitError), "Timer address can't be obtained.");
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} else {
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// Check that Timer is advancing
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AcpiTick0 = IoRead32 (TimerAddr);
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gBS->Stall(1000); // 1ms
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AcpiTick1 = IoRead32(TimerAddr);
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if (AcpiTick0 == AcpiTick1) { // Timer is not advancing
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TimerAddr = 0; // Flag it as not working
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AsciiSPrint(InitError, sizeof(InitError), "Timer is not advancing.");
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}
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}
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// We prefer to use the ACPI PM Timer when possible. If it is not available we fallback to old method.
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if (TimerAddr != 0) { // ACPI PM Timer seems to be working
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// ACPI PM timers are usually of 24-bit length, but there are some less common cases of 32-bit length also. When the maximal number is reached, it overflows.
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// The code below can handle overflow with AcpiTicksTarget of up to 24-bit size, on both available sizes of ACPI PM Timers (24-bit and 32-bit).
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AcpiTicksTarget = V_ACPI_TMR_FREQUENCY/10; // 357954 clocks of ACPI timer (100ms)
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AcpiTick0 = IoRead32 (TimerAddr); // read ACPI tick
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Tsc0 = AsmReadTsc(); // read TSC
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do {
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CpuPause();
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// check how many AcpiTicks passed since we started
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AcpiTick1 = IoRead32 (TimerAddr);
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if (AcpiTick0 <= AcpiTick1) { // no overflow
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AcpiTicksDelta = AcpiTick1 - AcpiTick0;
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} else if (AcpiTick0 - AcpiTick1 <= 0x00FFFFFF) { // overflow, 24-bit timer
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AcpiTicksDelta = (0x00FFFFFF - AcpiTick0) + AcpiTick1;
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} else { // overflow, 32-bit timer
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AcpiTicksDelta = (0xFFFFFFFF - AcpiTick0) + AcpiTick1;
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}
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} while (AcpiTicksDelta < AcpiTicksTarget); // keep checking Acpi ticks until target is reached
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Tsc1 = AsmReadTsc(); // we're done, get another TSC
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mMemLog->TscFreqSec = DivU64x32(MultU64x32((Tsc1 - Tsc0), V_ACPI_TMR_FREQUENCY), AcpiTicksDelta);
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} else {
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// ACPI PM Timer is not working, fallback to old method
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Tsc0 = AsmReadTsc();
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gBS->Stall(100000); // 100ms
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Tsc1 = AsmReadTsc();
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mMemLog->TscFreqSec = MultU64x32((Tsc1 - Tsc0), 10);
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}
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mMemLog->TscStart = Tsc0;
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mMemLog->TscLast = Tsc0;
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//
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// Install (publish) MEM_LOG
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//
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Status = gBS->InstallMultipleProtocolInterfaces (
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&gImageHandle,
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&mMemLogProtocolGuid,
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mMemLog,
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NULL
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);
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MemLogf(TRUE, 1, "MemLog inited, TSC freq: %lld\n", mMemLog->TscFreqSec);
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if (InitError[0] != '\0') {
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MemLogf(TRUE, 1, "CPU was calibrated with RTC\n");
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} else {
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MemLogf(TRUE, 1, "CPU was calibrated with ACPI PM Timer\n");
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}
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return Status;
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}
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/**
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Prints a log message to memory buffer.
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@param Timing TRUE to prepend timing to log.
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@param DebugMode DebugMode will be passed to Callback function if it is set.
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@param Format The format string for the debug message to print.
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@param Marker VA_LIST with variable arguments for Format.
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**/
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VOID
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EFIAPI
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MemLogVA (
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IN CONST BOOLEAN Timing,
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IN CONST INTN DebugMode,
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IN CONST CHAR8 *Format,
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IN VA_LIST Marker
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)
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{
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EFI_STATUS Status;
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UINTN DataWritten;
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CHAR8 *LastMessage;
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if (Format == NULL) {
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return;
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}
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if (mMemLog == NULL) {
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Status = MemLogInit ();
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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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//
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// Check if buffer can accept MEM_LOG_MAX_LINE_SIZE chars.
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// Increase buffer if not.
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//
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if ((UINTN)(mMemLog->Cursor - mMemLog->Buffer) + MEM_LOG_MAX_LINE_SIZE > mMemLog->BufferSize) {
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UINTN Offset;
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// not enough place for max line - make buffer bigger
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// but not too big (if something gets out of controll)
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if (mMemLog->BufferSize + MEM_LOG_INITIAL_SIZE > MEM_LOG_MAX_SIZE) {
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// Out of resources!
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return;
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}
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Offset = mMemLog->Cursor - mMemLog->Buffer;
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mMemLog->Buffer = ReallocatePool(mMemLog->BufferSize, mMemLog->BufferSize + MEM_LOG_INITIAL_SIZE, mMemLog->Buffer);
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mMemLog->BufferSize += MEM_LOG_INITIAL_SIZE;
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mMemLog->Cursor = mMemLog->Buffer + Offset;
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}
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//
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// Add log to buffer
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//
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LastMessage = mMemLog->Cursor;
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#ifdef JIEF_DEBUG
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if (0) {
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#else
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if (Timing) {
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#endif
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//
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// Write timing only at the beginning of a new line
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//
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if ((mMemLog->Buffer[0] == '\0') || (mMemLog->Cursor[-1] == '\n')) {
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DataWritten = AsciiSPrint(
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mMemLog->Cursor,
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mMemLog->BufferSize - (mMemLog->Cursor - mMemLog->Buffer),
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"%a ",
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GetTiming ());
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mMemLog->Cursor += DataWritten;
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}
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}
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DataWritten = AsciiVSPrint(
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mMemLog->Cursor,
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mMemLog->BufferSize - (mMemLog->Cursor - mMemLog->Buffer),
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Format,
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Marker);
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mMemLog->Cursor += DataWritten;
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//
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// Write to standard debug device also
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//
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// Jief : use SerialPortWrite instead of DebugPrint to avoid 256 chars message length limitation.
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// Jief : do this before CallBack to preserve order of messages sent from inside callback.
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SerialPortWrite((UINT8*)LastMessage, mMemLog->Cursor - LastMessage);
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// DebugPrint(DEBUG_INFO, "%a", LastMessage);
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//
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// Pass this last message to callback if defined
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//
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if (mMemLog->Callback != NULL) {
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mMemLog->Callback(DebugMode, LastMessage);
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}
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}
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/**
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Prints a log to message memory buffer.
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If Format is NULL, then does nothing.
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@param Timing TRUE to prepend timing to log.
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@param DebugMode DebugMode will be passed to Callback function if it is set.
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@param Format The format string for the debug message to print.
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@param ... The variable argument list whose contents are accessed
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based on the format string specified by Format.
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**/
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VOID
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EFIAPI
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MemLog (
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IN CONST BOOLEAN Timing,
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IN CONST INTN DebugMode,
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IN CONST CHAR8 *Format,
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...
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)
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{
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VA_LIST Marker;
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if (Format == NULL) {
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return;
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}
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VA_START (Marker, Format);
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MemLogVA (Timing, DebugMode, Format, Marker);
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VA_END (Marker);
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}
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/**
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Returns pointer to MemLog buffer.
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**/
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CHAR8*
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EFIAPI
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GetMemLogBuffer (
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VOID
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)
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{
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EFI_STATUS Status;
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if (mMemLog == NULL) {
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Status = MemLogInit ();
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if (EFI_ERROR(Status)) {
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return NULL;
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}
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}
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return mMemLog != NULL ? mMemLog->Buffer : NULL;
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}
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/**
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Returns the length of log (number of chars written) in mem buffer.
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**/
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UINTN
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EFIAPI
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GetMemLogLen (
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VOID
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)
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{
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EFI_STATUS Status;
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if (mMemLog == NULL) {
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Status = MemLogInit ();
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if (EFI_ERROR(Status)) {
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return 0;
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}
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}
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return mMemLog != NULL ? mMemLog->Cursor - mMemLog->Buffer : 0;
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}
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/**
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Sets callback that will be called when message is added to mem log.
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**/
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VOID
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EFIAPI
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SetMemLogCallback (
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MEM_LOG_CALLBACK Callback
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)
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{
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EFI_STATUS Status;
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if (mMemLog == NULL) {
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Status = MemLogInit ();
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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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mMemLog->Callback = Callback;
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}
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/**
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Sets callback that will be called when message is added to mem log.
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**/
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MEM_LOG_CALLBACK
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EFIAPI
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GetMemLogCallback ()
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{
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return mMemLog->Callback;
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}
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/**
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Returns TSC ticks per second.
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**/
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UINT64
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EFIAPI
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GetMemLogTscTicksPerSecond (VOID)
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{
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if (mMemLog == NULL) return 0;
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return mMemLog->TscFreqSec;
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}
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// Microsoft wants _fltused
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#ifdef _MSC_VER
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#ifdef __cplusplus
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extern "C" {
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#endif
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int _fltused=0; // it should be a single underscore since the double one is the mangled name
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#ifdef __cplusplus
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}
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#endif
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#endif
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static int printfNewline = 1;
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static void transmitS8Printf(const char* buf, unsigned int nbchar, void* context)
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{
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//
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// Check if buffer can accept nbchar chars.
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// Increase buffer if not.
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//
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if ( mMemLog->BufferSize - (UINTN)(mMemLog->Cursor - mMemLog->Buffer) <= nbchar )
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{
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UINTN Offset;
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// not enough place for max line - make buffer bigger
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// but not too big (if something gets out of controll)
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if (mMemLog->BufferSize + MEM_LOG_INITIAL_SIZE > MEM_LOG_MAX_SIZE) {
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// Out of resources!
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// Jief : Silent fail. TODO : At least put "Out of resource" at the end of the log
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return;
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}
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Offset = mMemLog->Cursor - mMemLog->Buffer;
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mMemLog->Buffer = ReallocatePool(mMemLog->BufferSize, mMemLog->BufferSize + MEM_LOG_INITIAL_SIZE, mMemLog->Buffer);
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mMemLog->BufferSize += MEM_LOG_INITIAL_SIZE;
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mMemLog->Cursor = mMemLog->Buffer + Offset;
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}
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CopyMem(mMemLog->Cursor, buf, nbchar);
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mMemLog->Cursor += nbchar;
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}
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const char* printf_lite_get_timestamp(void)
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{
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UINT64 dTStartSec;
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UINT64 dTStartMs;
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UINT64 dTLastSec;
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UINT64 dTLastMs;
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UINT64 CurrentTsc;
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mTimingTxt[0] = '\0';
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if (mMemLog != NULL && mMemLog->TscFreqSec != 0) {
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CurrentTsc = AsmReadTsc();
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dTStartMs = DivU64x64Remainder(MultU64x32(CurrentTsc - mMemLog->TscStart, 1000), mMemLog->TscFreqSec, NULL);
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dTStartSec = DivU64x64Remainder(dTStartMs, 1000, &dTStartMs);
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dTLastMs = DivU64x64Remainder(MultU64x32(CurrentTsc - mMemLog->TscLast, 1000), mMemLog->TscFreqSec, NULL);
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dTLastSec = DivU64x64Remainder(dTLastMs, 1000, &dTLastMs);
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snprintf(mTimingTxt, sizeof(mTimingTxt), "%lld:%03lld %lld:%03lld ", dTStartSec, dTStartMs, dTLastSec, dTLastMs);
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mMemLog->TscLast = CurrentTsc;
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}
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return mTimingTxt;
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}
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/**
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Prints a log message to memory buffer.
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@param Timing TRUE to prepend timing to log.
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@param DebugMode DebugMode will be passed to Callback function if it is set.
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@param Format The format string for the debug message to print.
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@param Marker VA_LIST with variable arguments for Format.
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**/
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VOID
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EFIAPI
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MemLogfVA (
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IN CONST BOOLEAN Timing,
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IN CONST INTN DebugMode,
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IN CONST CHAR8 *Format,
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IN VA_LIST Marker
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)
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{
|
|
EFI_STATUS Status;
|
|
|
|
if (Format == NULL) {
|
|
return;
|
|
}
|
|
|
|
if (mMemLog == NULL) {
|
|
Status = MemLogInit ();
|
|
if (EFI_ERROR(Status)) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
//
|
|
// Add log to buffer
|
|
//
|
|
UINTN LastMessage = mMemLog->Cursor - mMemLog->Buffer;
|
|
|
|
#ifdef JIEF_DEBUG
|
|
vprintf_with_callback_timestamp_emitcr(Format, Marker, transmitS8Printf, NULL, &printfNewline, 0, 1);
|
|
#else
|
|
vprintf_with_callback_timestamp_emitcr(Format, Marker, transmitS8Printf, NULL, &printfNewline, Timing, 1);
|
|
#endif
|
|
|
|
#ifdef DEBUG_ON_SERIAL_PORT
|
|
size_t DataWritten = mMemLog->Cursor - mMemLog->Buffer - LastMessage;
|
|
#endif
|
|
//
|
|
// Check driver debug mask value and global mask
|
|
//
|
|
// DebugMode is not same as PrintErrorLevel
|
|
// if ((DebugMode & GetDebugPrintErrorLevel ()) == 0) {
|
|
// return;
|
|
// }
|
|
//
|
|
// Write to standard debug device also
|
|
//
|
|
// Jief : use SerialPortWrite instead of DebugPrint to avoid 256 chars message length limitation.
|
|
// Jief : do this before CallBack to preserve order of messages sent from inside callback.
|
|
#ifdef DEBUG_ON_SERIAL_PORT
|
|
SerialPortWrite((UINT8*)(mMemLog->Buffer + LastMessage), DataWritten);
|
|
#endif
|
|
// DebugPrint(DEBUG_INFO, "%a", LastMessage);
|
|
|
|
//
|
|
// Pass this last message to callback if defined
|
|
//
|
|
if (mMemLog->Callback != NULL) {
|
|
mMemLog->Callback(DebugMode, mMemLog->Buffer + LastMessage);
|
|
}
|
|
}
|
|
|
|
/**
|
|
Prints a log to message memory buffer.
|
|
|
|
If Format is NULL, then does nothing.
|
|
|
|
@param Timing TRUE to prepend timing to log.
|
|
@param DebugMode DebugMode will be passed to Callback function if it is set.
|
|
@param Format The format string for the debug message to print.
|
|
@param ... The variable argument list whose contents are accessed
|
|
based on the format string specified by Format.
|
|
|
|
**/
|
|
VOID
|
|
EFIAPI
|
|
MemLogf (
|
|
IN CONST BOOLEAN Timing,
|
|
IN CONST INTN DebugMode,
|
|
IN CONST CHAR8 *Format,
|
|
...
|
|
)
|
|
{
|
|
VA_LIST Marker;
|
|
|
|
if (Format == NULL) {
|
|
return;
|
|
}
|
|
|
|
VA_START (Marker, Format);
|
|
MemLogfVA (Timing, DebugMode, Format, Marker);
|
|
VA_END (Marker);
|
|
}
|