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MdeModulePkg/Library: introduce ArmFfaConsoleDebugLib
This patch adds ArmFfaConsoleDebugLib. A debug library that utilizes FF-A Console Log API to print debug messages to the console. This is useful in context of running the StandaloneMm payload as a S-EL0 SP on top of SPMC where StandaloneMm isn't allowed to access console device or no console device (e.x) Hafnium. NOTE: FFA_CONSOLE_LOG* could be used by secure partition only. Signed-off-by: Mohamed Gamal Morsy <mohamed.morsy@arm.com>
This commit is contained in:
Mohamed Gamal Morsy
mergify[bot]
parent
2fb6e81c06
commit
ddc7ed1dee
4 changed files with 576 additions and 0 deletions
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@ -0,0 +1,513 @@
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/** @file
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Base Debug library instance based on Arm FF-A Console log.
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Copyright (c) 2025, Arm Limited. All rights reserved.<BR>
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Copyright (c) 2006 - 2019, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#include <Uefi/UefiBaseType.h>
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#include <IndustryStandard/ArmFfaSvc.h>
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#include <IndustryStandard/ArmStdSmc.h>
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#include <Library/BaseLib.h>
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#include <Library/BaseMemoryLib.h>
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#include <Library/ArmFfaLib.h>
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#include <Library/ArmSmcLib.h>
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#include <Library/ArmSvcLib.h>
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#include <Library/DebugLib.h>
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#include <Library/PrintLib.h>
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#include <Library/PcdLib.h>
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#include <Library/DebugPrintErrorLevelLib.h>
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//
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// Define the maximum debug and assert message length that this library supports
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//
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#define MAX_DEBUG_MESSAGE_LENGTH 0x100
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//
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// Define Maxmium available number of registers per FF-A call.
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//
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#define MAX_REG64_COUNT 16
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//
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// VA_LIST can not initialize to NULL for all compiler, so we use this to
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// indicate a null VA_LIST
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//
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STATIC VA_LIST mVaListNull;
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/**
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Convert FFA return code to RETURN_STATUS.
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@param [in] FfaStatus Ffa return Status
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@retval RETURN_STATUS return value correspond RETURN_STATUS to FfaStatus
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**/
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STATIC
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RETURN_STATUS
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EFIAPI
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FfaStatusToRetStatus (
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IN UINTN FfaStatus
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)
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{
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switch ((UINT32)FfaStatus) {
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case ARM_FFA_RET_SUCCESS:
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return RETURN_SUCCESS;
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case ARM_FFA_RET_INVALID_PARAMETERS:
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return RETURN_INVALID_PARAMETER;
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case ARM_FFA_RET_NO_MEMORY:
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return RETURN_OUT_OF_RESOURCES;
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case ARM_FFA_RET_BUSY:
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return RETURN_NO_RESPONSE;
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case ARM_FFA_RET_DENIED:
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return RETURN_ACCESS_DENIED;
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case ARM_FFA_RET_ABORTED:
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return RETURN_ABORTED;
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case ARM_FFA_RET_NODATA:
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return RETURN_NOT_FOUND;
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case ARM_FFA_RET_NOT_READY:
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return RETURN_NOT_READY;
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case ARM_FFA_RET_RETRY:
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return RETURN_TIMEOUT;
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default:
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return RETURN_UNSUPPORTED;
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}
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}
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/**
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Convert FfArgs to RETURN_STATUS.
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@param [in] FfaArgs Ffa arguments
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@retval RETURN_STATUS return value correspond RETURN_STATUS to FfaStatus
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**/
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STATIC
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RETURN_STATUS
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EFIAPI
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FfaArgsToRetStatus (
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IN ARM_FFA_ARGS *FfaArgs
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)
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{
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UINT32 FfaStatus;
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if (FfaArgs == NULL) {
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FfaStatus = ARM_FFA_RET_INVALID_PARAMETERS;
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} else if (IS_FID_FFA_ERROR (FfaArgs->Arg0)) {
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/*
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* In case of error, the Arg0 will be set to the fid FFA_ERROR.
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* and Error code is set in Arg2.
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*/
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FfaStatus = FfaArgs->Arg2;
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} else if (FfaArgs->Arg0 == ARM_FFA_RET_NOT_SUPPORTED) {
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/*
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* If Some FF-A ABI doesn't support, it sets ARM_FFA_RET_NOT_SUPPORTED
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* in Arg0 and other register has no meaning.
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* In this case, set Arg2 as ARM_FFA_RET_NOT_SUPPORTED so that
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* FfaStatusToEfiStatus (FfaARgs.Arg2) returns proper EFI_STATUS.
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*/
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FfaStatus = ARM_FFA_RET_NOT_SUPPORTED;
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} else {
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FfaStatus = ARM_FFA_RET_SUCCESS;
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}
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return FfaStatusToRetStatus (FfaStatus);
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}
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/**
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Trigger FF-A ABI call according to PcdFfaLibConduitSmc.
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@param [in, out] FfaArgs Ffa arguments
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**/
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STATIC
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VOID
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EFIAPI
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ArmFfaConsoleCall (
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IN OUT ARM_FFA_ARGS *FfaArgs
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)
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{
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if (PcdGetBool (PcdFfaLibConduitSmc)) {
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ArmCallSmc ((ARM_SMC_ARGS *)FfaArgs);
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} else {
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ArmCallSvc ((ARM_SVC_ARGS *)FfaArgs);
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}
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}
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/**
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Log through FFA_CONSOLE_LOG supervisor call.
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@param Buffer Point of data buffer which need to be written.
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@param NumberOfBytes Number of output bytes which are cached in Buffer.
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@retval 0 Write data failed.
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@retval !0 Actual number of bytes written.
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**/
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STATIC
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UINTN
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EFIAPI
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ArmFfaConsoleLog (
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IN CHAR8 *Buffer,
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IN UINTN NumberOfBytes
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)
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{
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RETURN_STATUS Status;
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UINTN MaxCharsPerArmFfaConsoleCall;
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UINTN RemainBytes;
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UINTN WriteBytes;
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ARM_FFA_ARGS FfaArgs;
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MaxCharsPerArmFfaConsoleCall = sizeof (UINT64) * MAX_REG64_COUNT;
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RemainBytes = NumberOfBytes;
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while (RemainBytes > 0) {
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ZeroMem (&FfaArgs, sizeof (ARM_FFA_ARGS));
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WriteBytes = (RemainBytes > MaxCharsPerArmFfaConsoleCall) ? MaxCharsPerArmFfaConsoleCall : RemainBytes;
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/*
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* StandaloneMm in Arm is supported 64-bit only so
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* SPMC must be in the 64-bit execution state and
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* according to FF-A specification Chapter 11, bullet 6
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* SPMC must implement both SMC32 and SMC64 conventions of the ABI
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* if it runs in the 64-bit execution state.
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*
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* Therefore, use FFA_CONSOLE_LOG_AARH64 only.
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*/
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FfaArgs.Arg0 = ARM_FID_FFA_CONSOLE_LOG_AARCH64;
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FfaArgs.Arg1 = WriteBytes;
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CopyMem (&FfaArgs.Arg2, Buffer, WriteBytes);
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ArmFfaConsoleCall (&FfaArgs);
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Status = FfaArgsToRetStatus (&FfaArgs);
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if (Status == RETURN_TIMEOUT) {
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WriteBytes = FfaArgs.Arg3;
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} else if (RETURN_ERROR (Status)) {
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break;
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}
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RemainBytes -= WriteBytes;
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Buffer += WriteBytes;
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}
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return NumberOfBytes - RemainBytes;
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}
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/**
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Prints a debug message to the debug output device if the specified error level is enabled.
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If any bit in ErrorLevel is also set in DebugPrintErrorLevelLib function
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GetDebugPrintErrorLevel (), then print the message specified by Format and the
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associated variable argument list to the debug output device.
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If Format is NULL, then ASSERT().
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@param ErrorLevel The error level of the debug message.
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@param Format Format string for the debug message to print.
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@param ... 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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DebugPrint (
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IN UINTN ErrorLevel,
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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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VA_START (Marker, Format);
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DebugVPrint (ErrorLevel, Format, Marker);
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VA_END (Marker);
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}
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/**
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Prints a debug message to the debug output device if the specified
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error level is enabled base on Null-terminated format string and a
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VA_LIST argument list or a BASE_LIST argument list.
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If any bit in ErrorLevel is also set in DebugPrintErrorLevelLib function
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GetDebugPrintErrorLevel (), then print the message specified by Format and
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the associated variable argument list to the debug output device.
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If Format is NULL, then ASSERT().
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@param ErrorLevel The error level of the debug message.
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@param Format Format string for the debug message to print.
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@param VaListMarker VA_LIST marker for the variable argument list.
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@param BaseListMarker BASE_LIST marker for the variable argument list.
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**/
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VOID
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DebugPrintMarker (
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IN UINTN ErrorLevel,
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IN CONST CHAR8 *Format,
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IN VA_LIST VaListMarker,
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IN BASE_LIST BaseListMarker
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)
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{
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CHAR8 Buffer[MAX_DEBUG_MESSAGE_LENGTH];
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//
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// If Format is NULL, then ASSERT().
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//
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ASSERT (Format != NULL);
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//
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// Check driver debug mask value and global mask
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//
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if ((ErrorLevel & GetDebugPrintErrorLevel ()) == 0) {
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return;
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}
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//
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// Convert the DEBUG() message to an ASCII String
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//
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if (BaseListMarker == NULL) {
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AsciiVSPrint (Buffer, sizeof (Buffer), Format, VaListMarker);
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} else {
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AsciiBSPrint (Buffer, sizeof (Buffer), Format, BaseListMarker);
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}
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//
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// Send the print string to the FF-A console for tracing.
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//
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ArmFfaConsoleLog (Buffer, AsciiStrLen (Buffer));
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}
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/**
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Prints a debug message to the debug output device if the specified
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error level is enabled.
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If any bit in ErrorLevel is also set in DebugPrintErrorLevelLib function
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GetDebugPrintErrorLevel (), then print the message specified by Format and
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the associated variable argument list to the debug output device.
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If Format is NULL, then ASSERT().
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@param ErrorLevel The error level of the debug message.
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@param Format Format string for the debug message to print.
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@param VaListMarker VA_LIST marker for the variable argument list.
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**/
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VOID
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EFIAPI
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DebugVPrint (
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IN UINTN ErrorLevel,
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IN CONST CHAR8 *Format,
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IN VA_LIST VaListMarker
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)
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{
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DebugPrintMarker (ErrorLevel, Format, VaListMarker, NULL);
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}
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/**
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Prints a debug message to the debug output device if the specified
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error level is enabled.
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This function use BASE_LIST which would provide a more compatible
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service than VA_LIST.
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If any bit in ErrorLevel is also set in DebugPrintErrorLevelLib function
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GetDebugPrintErrorLevel (), then print the message specified by Format and
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the associated variable argument list to the debug output device.
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If Format is NULL, then ASSERT().
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@param ErrorLevel The error level of the debug message.
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@param Format Format string for the debug message to print.
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@param BaseListMarker BASE_LIST marker for the variable argument list.
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**/
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VOID
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EFIAPI
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DebugBPrint (
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IN UINTN ErrorLevel,
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IN CONST CHAR8 *Format,
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IN BASE_LIST BaseListMarker
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)
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{
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DebugPrintMarker (ErrorLevel, Format, mVaListNull, BaseListMarker);
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}
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/**
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Prints an assert message containing a filename, line number, and description.
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This may be followed by a breakpoint or a dead loop.
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Print a message of the form "ASSERT <FileName>(<LineNumber>): <Description>\n"
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to the debug output device. If DEBUG_PROPERTY_ASSERT_BREAKPOINT_ENABLED bit of
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PcdDebugProperyMask is set then CpuBreakpoint() is called. Otherwise, if
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DEBUG_PROPERTY_ASSERT_DEADLOOP_ENABLED bit of PcdDebugProperyMask is set then
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CpuDeadLoop() is called. If neither of these bits are set, then this function
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returns immediately after the message is printed to the debug output device.
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DebugAssert() must actively prevent recursion. If DebugAssert() is called while
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processing another DebugAssert(), then DebugAssert() must return immediately.
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If FileName is NULL, then a <FileName> string of "(NULL) Filename" is printed.
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If Description is NULL, then a <Description> string of "(NULL) Description" is printed.
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@param FileName The pointer to the name of the source file that generated the assert condition.
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@param LineNumber The line number in the source file that generated the assert condition
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@param Description The pointer to the description of the assert condition.
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**/
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VOID
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EFIAPI
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DebugAssert (
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IN CONST CHAR8 *FileName,
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IN UINTN LineNumber,
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IN CONST CHAR8 *Description
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)
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{
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CHAR8 Buffer[MAX_DEBUG_MESSAGE_LENGTH];
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//
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// Generate the ASSERT() message in Ascii format
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//
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AsciiSPrint (Buffer, sizeof (Buffer), "ASSERT [%a] %a(%d): %a\n", gEfiCallerBaseName, FileName, LineNumber, Description);
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//
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// Send the print string to the FF-A Console.
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//
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ArmFfaConsoleLog (Buffer, AsciiStrLen (Buffer));
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//
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// Generate a Breakpoint, DeadLoop, or NOP based on PCD settings
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//
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if ((PcdGet8 (PcdDebugPropertyMask) & DEBUG_PROPERTY_ASSERT_BREAKPOINT_ENABLED) != 0) {
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CpuBreakpoint ();
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} else if ((PcdGet8 (PcdDebugPropertyMask) & DEBUG_PROPERTY_ASSERT_DEADLOOP_ENABLED) != 0) {
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CpuDeadLoop ();
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}
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}
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/**
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Fills a target buffer with PcdDebugClearMemoryValue, and returns the target buffer.
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This function fills Length bytes of Buffer with the value specified by
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PcdDebugClearMemoryValue, and returns Buffer.
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If Buffer is NULL, then ASSERT().
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If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().
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@param Buffer The pointer to the target buffer to be filled with PcdDebugClearMemoryValue.
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@param Length The number of bytes in Buffer to fill with zeros PcdDebugClearMemoryValue.
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@return Buffer The pointer to the target buffer filled with PcdDebugClearMemoryValue.
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**/
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VOID *
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EFIAPI
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DebugClearMemory (
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OUT VOID *Buffer,
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IN UINTN Length
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)
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{
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//
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// If Buffer is NULL, then ASSERT().
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//
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ASSERT (Buffer != NULL);
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//
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// SetMem() checks for the the ASSERT() condition on Length and returns Buffer
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//
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return SetMem (Buffer, Length, PcdGet8 (PcdDebugClearMemoryValue));
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}
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/**
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Returns TRUE if ASSERT() macros are enabled.
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This function returns TRUE if the DEBUG_PROPERTY_DEBUG_ASSERT_ENABLED bit of
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PcdDebugProperyMask is set. Otherwise FALSE is returned.
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@retval TRUE The DEBUG_PROPERTY_DEBUG_ASSERT_ENABLED bit of PcdDebugProperyMask is set.
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@retval FALSE The DEBUG_PROPERTY_DEBUG_ASSERT_ENABLED bit of PcdDebugProperyMask is clear.
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**/
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BOOLEAN
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EFIAPI
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DebugAssertEnabled (
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VOID
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)
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{
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return (BOOLEAN)((PcdGet8 (PcdDebugPropertyMask) & DEBUG_PROPERTY_DEBUG_ASSERT_ENABLED) != 0);
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}
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/**
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Returns TRUE if DEBUG() macros are enabled.
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This function returns TRUE if the DEBUG_PROPERTY_DEBUG_PRINT_ENABLED bit of
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PcdDebugProperyMask is set. Otherwise FALSE is returned.
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@retval TRUE The DEBUG_PROPERTY_DEBUG_PRINT_ENABLED bit of PcdDebugProperyMask is set.
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@retval FALSE The DEBUG_PROPERTY_DEBUG_PRINT_ENABLED bit of PcdDebugProperyMask is clear.
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**/
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BOOLEAN
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EFIAPI
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DebugPrintEnabled (
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VOID
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)
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{
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return (BOOLEAN)((PcdGet8 (PcdDebugPropertyMask) & DEBUG_PROPERTY_DEBUG_PRINT_ENABLED) != 0);
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}
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/**
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Returns TRUE if DEBUG_CODE() macros are enabled.
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This function returns TRUE if the DEBUG_PROPERTY_DEBUG_CODE_ENABLED bit of
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PcdDebugProperyMask is set. Otherwise FALSE is returned.
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@retval TRUE The DEBUG_PROPERTY_DEBUG_CODE_ENABLED bit of PcdDebugProperyMask is set.
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@retval FALSE The DEBUG_PROPERTY_DEBUG_CODE_ENABLED bit of PcdDebugProperyMask is clear.
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**/
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BOOLEAN
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EFIAPI
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DebugCodeEnabled (
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VOID
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)
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{
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return (BOOLEAN)((PcdGet8 (PcdDebugPropertyMask) & DEBUG_PROPERTY_DEBUG_CODE_ENABLED) != 0);
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}
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/**
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Returns TRUE if DEBUG_CLEAR_MEMORY() macro is enabled.
|
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This function returns TRUE if the DEBUG_PROPERTY_CLEAR_MEMORY_ENABLED bit of
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PcdDebugProperyMask is set. Otherwise FALSE is returned.
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@retval TRUE The DEBUG_PROPERTY_CLEAR_MEMORY_ENABLED bit of PcdDebugProperyMask is set.
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@retval FALSE The DEBUG_PROPERTY_CLEAR_MEMORY_ENABLED bit of PcdDebugProperyMask is clear.
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**/
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BOOLEAN
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EFIAPI
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DebugClearMemoryEnabled (
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VOID
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)
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{
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return (BOOLEAN)((PcdGet8 (PcdDebugPropertyMask) & DEBUG_PROPERTY_CLEAR_MEMORY_ENABLED) != 0);
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}
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||||
/**
|
||||
Returns TRUE if any one of the bit is set both in ErrorLevel and PcdFixedDebugPrintErrorLevel.
|
||||
|
||||
This function compares the bit mask of ErrorLevel and PcdFixedDebugPrintErrorLevel.
|
||||
|
||||
@retval TRUE Current ErrorLevel is supported.
|
||||
@retval FALSE Current ErrorLevel is not supported.
|
||||
|
||||
**/
|
||||
BOOLEAN
|
||||
EFIAPI
|
||||
DebugPrintLevelEnabled (
|
||||
IN CONST UINTN ErrorLevel
|
||||
)
|
||||
{
|
||||
return (BOOLEAN)((ErrorLevel & PcdGet32 (PcdFixedDebugPrintErrorLevel)) != 0);
|
||||
}
|
||||
|
|
@ -0,0 +1,46 @@
|
|||
## @file
|
||||
# Instance of Debug Library based on FF-A console logging interface.
|
||||
#
|
||||
# Copyright (c) 2025, Arm Limited. All rights reserved.<BR>
|
||||
# Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
|
||||
#
|
||||
# SPDX-License-Identifier: BSD-2-Clause-Patent
|
||||
#
|
||||
#
|
||||
##
|
||||
|
||||
[Defines]
|
||||
INF_VERSION = 0x00010005
|
||||
BASE_NAME = ArmFfaConsoleDebugStandaloneMmLib
|
||||
MODULE_UNI_FILE = ArmFfaConsoleDebugStandaloneMmLib.uni
|
||||
FILE_GUID = c02b2e92-3977-11f1-800e-1f227574e3fe
|
||||
MODULE_TYPE = BASE
|
||||
VERSION_STRING = 1.0
|
||||
LIBRARY_CLASS = DebugLib|MM_CORE_STANDALONE MM_STANDALONE
|
||||
|
||||
#
|
||||
# VALID_ARCHITECTURES = AARCH64
|
||||
#
|
||||
|
||||
[Sources]
|
||||
ArmFfaConsoleDebugStandaloneMmLib.c
|
||||
|
||||
[Packages]
|
||||
MdePkg/MdePkg.dec
|
||||
MdeModulePkg/MdeModulePkg.dec
|
||||
|
||||
[LibraryClasses]
|
||||
ArmSmcLib
|
||||
ArmSvcLib
|
||||
BaseLib
|
||||
BaseMemoryLib
|
||||
PcdLib
|
||||
PrintLib
|
||||
DebugPrintErrorLevelLib
|
||||
|
||||
[Pcd]
|
||||
gEfiMdePkgTokenSpaceGuid.PcdDebugClearMemoryValue ## SOMETIMES_CONSUMES
|
||||
gEfiMdePkgTokenSpaceGuid.PcdDebugPropertyMask ## CONSUMES
|
||||
gEfiMdePkgTokenSpaceGuid.PcdFixedDebugPrintErrorLevel ## CONSUMES
|
||||
gEfiMdeModulePkgTokenSpaceGuid.PcdFfaLibConduitSmc ## CONSUMES
|
||||
|
||||
|
|
@ -0,0 +1,16 @@
|
|||
// /** @file
|
||||
// Instance of FF-A Concole Debug log Library.
|
||||
//
|
||||
//
|
||||
// Copyright (c) 2025, Arm Limited. All rights reserved.<BR>
|
||||
// Copyright (c) 2006 - 2014, Intel Corporation. All rights reserved.<BR>
|
||||
//
|
||||
// SPDX-License-Identifier: BSD-2-Clause-Patent
|
||||
//
|
||||
// **/
|
||||
|
||||
|
||||
#string STR_MODULE_ABSTRACT #language en-US "Instance of FF-A Console Debug log library"
|
||||
|
||||
#string STR_MODULE_DESCRIPTION #language en-US "It uses Print Library to produce formatted output strings using the FF-A debug log interface."
|
||||
|
||||
|
|
@ -539,6 +539,7 @@
|
|||
MdeModulePkg/Library/ArmFfaLib/ArmFfaDxeLib.inf
|
||||
MdeModulePkg/Library/ArmFfaLib/ArmFfaStandaloneMmCoreLib.inf
|
||||
MdeModulePkg/Library/ArmFfaLib/ArmFfaStandaloneMmLib.inf
|
||||
MdeModulePkg/Library/ArmFfaConsoleDebugLib/ArmFfaConsoleDebugStandaloneMmLib.inf
|
||||
|
||||
[BuildOptions]
|
||||
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue