diff options
Diffstat (limited to 'src/VBox/Devices/EFI/Firmware/MdePkg/Library/UefiDebugLibDebugPortProtocol/DebugLib.c')
-rw-r--r-- | src/VBox/Devices/EFI/Firmware/MdePkg/Library/UefiDebugLibDebugPortProtocol/DebugLib.c | 429 |
1 files changed, 429 insertions, 0 deletions
diff --git a/src/VBox/Devices/EFI/Firmware/MdePkg/Library/UefiDebugLibDebugPortProtocol/DebugLib.c b/src/VBox/Devices/EFI/Firmware/MdePkg/Library/UefiDebugLibDebugPortProtocol/DebugLib.c new file mode 100644 index 00000000..54bc182d --- /dev/null +++ b/src/VBox/Devices/EFI/Firmware/MdePkg/Library/UefiDebugLibDebugPortProtocol/DebugLib.c @@ -0,0 +1,429 @@ +/** @file + UEFI Debug Library that sends messages to EFI_DEBUGPORT_PROTOCOL.Write. + + Copyright (c) 2015 - 2019, Intel Corporation. All rights reserved.<BR> + SPDX-License-Identifier: BSD-2-Clause-Patent + +**/ + +#include <Uefi.h> + +#include <Library/DebugLib.h> +#include <Library/PrintLib.h> +#include <Library/PcdLib.h> +#include <Library/BaseLib.h> +#include <Library/BaseMemoryLib.h> +#include <Library/DebugPrintErrorLevelLib.h> + +#include <Protocol/DebugPort.h> + +// +// Define the maximum debug and assert message length that this library supports +// +#define MAX_DEBUG_MESSAGE_LENGTH 0x100 + +// +// Define the timeout for EFI_DEBUGPORT_PROTOCOL.Write +// +#define WRITE_TIMEOUT 1000 + + +EFI_DEBUGPORT_PROTOCOL *mDebugPort = NULL; + +// +// VA_LIST can not initialize to NULL for all compiler, so we use this to +// indicate a null VA_LIST +// +VA_LIST mVaListNull; + +extern BOOLEAN mPostEBS; +extern EFI_BOOT_SERVICES *mDebugBS; + +/** + Send message to DebugPort Protocol. + + If mDebugPort is NULL, i.e. EFI_DEBUGPORT_PROTOCOL is not located, + EFI_DEBUGPORT_PROTOCOL is located first. + Then, Buffer is sent via EFI_DEBUGPORT_PROTOCOL.Write. + + @param Buffer The message to be sent. + @param BufferLength The byte length of Buffer. +**/ +VOID +UefiDebugLibDebugPortProtocolWrite ( + IN CONST CHAR8 *Buffer, + IN UINTN BufferLength + ) +{ + UINTN Length; + EFI_STATUS Status; + + if (!mPostEBS) { + // + // If mDebugPort is NULL, initialize first. + // + if (mDebugPort == NULL) { + Status = mDebugBS->LocateProtocol (&gEfiDebugPortProtocolGuid, NULL, (VOID **)&mDebugPort); + if (EFI_ERROR (Status)) { + return; + } + + mDebugPort->Reset (mDebugPort); + } + + // + // EFI_DEBUGPORT_PROTOCOL.Write is called until all message is sent. + // + while (BufferLength > 0) { + Length = BufferLength; + + Status = mDebugPort->Write (mDebugPort, WRITE_TIMEOUT, &Length, (VOID *) Buffer); + if (EFI_ERROR (Status) || BufferLength < Length) { + break; + } + + Buffer += Length; + BufferLength -= Length; + } + } +} + +/** + Prints a debug message to the debug output device if the specified error level is enabled. + + If any bit in ErrorLevel is also set in DebugPrintErrorLevelLib function + GetDebugPrintErrorLevel (), then print the message specified by Format and the + associated variable argument list to the debug output device. + + If Format is NULL, then ASSERT(). + + @param ErrorLevel The error level of the debug message. + @param Format Format string for the debug message to print. + @param ... A variable argument list whose contents are accessed + based on the format string specified by Format. + +**/ +VOID +EFIAPI +DebugPrint ( + IN UINTN ErrorLevel, + IN CONST CHAR8 *Format, + ... + ) +{ + VA_LIST Marker; + + VA_START (Marker, Format); + DebugVPrint (ErrorLevel, Format, Marker); + VA_END (Marker); +} + + +/** + Prints a debug message to the debug output device if the specified + error level is enabled base on Null-terminated format string and a + VA_LIST argument list or a BASE_LIST argument list. + + If any bit in ErrorLevel is also set in DebugPrintErrorLevelLib function + GetDebugPrintErrorLevel (), then print the message specified by Format and + the associated variable argument list to the debug output device. + + If Format is NULL, then ASSERT(). + + @param ErrorLevel The error level of the debug message. + @param Format Format string for the debug message to print. + @param VaListMarker VA_LIST marker for the variable argument list. + @param BaseListMarker BASE_LIST marker for the variable argument list. + +**/ +VOID +DebugPrintMarker ( + IN UINTN ErrorLevel, + IN CONST CHAR8 *Format, + IN VA_LIST VaListMarker, + IN BASE_LIST BaseListMarker + ) +{ + CHAR8 Buffer[MAX_DEBUG_MESSAGE_LENGTH]; + + if (!mPostEBS) { + // + // If Format is NULL, then ASSERT(). + // + ASSERT (Format != NULL); + + // + // Check driver debug mask value and global mask + // + if ((ErrorLevel & GetDebugPrintErrorLevel ()) == 0) { + return; + } + + // + // Convert the DEBUG() message to an ASCII String + // + if (BaseListMarker == NULL) { + AsciiVSPrint (Buffer, sizeof (Buffer), Format, VaListMarker); + } else { + AsciiBSPrint (Buffer, sizeof (Buffer), Format, BaseListMarker); + } + + // + // Send the print string to EFI_DEBUGPORT_PROTOCOL.Write. + // + UefiDebugLibDebugPortProtocolWrite (Buffer, AsciiStrLen (Buffer)); + } +} + + +/** + Prints a debug message to the debug output device if the specified + error level is enabled. + + If any bit in ErrorLevel is also set in DebugPrintErrorLevelLib function + GetDebugPrintErrorLevel (), then print the message specified by Format and + the associated variable argument list to the debug output device. + + If Format is NULL, then ASSERT(). + + @param ErrorLevel The error level of the debug message. + @param Format Format string for the debug message to print. + @param VaListMarker VA_LIST marker for the variable argument list. + +**/ +VOID +EFIAPI +DebugVPrint ( + IN UINTN ErrorLevel, + IN CONST CHAR8 *Format, + IN VA_LIST VaListMarker + ) +{ + DebugPrintMarker (ErrorLevel, Format, VaListMarker, NULL); +} + + +/** + Prints a debug message to the debug output device if the specified + error level is enabled. + This function use BASE_LIST which would provide a more compatible + service than VA_LIST. + + If any bit in ErrorLevel is also set in DebugPrintErrorLevelLib function + GetDebugPrintErrorLevel (), then print the message specified by Format and + the associated variable argument list to the debug output device. + + If Format is NULL, then ASSERT(). + + @param ErrorLevel The error level of the debug message. + @param Format Format string for the debug message to print. + @param BaseListMarker BASE_LIST marker for the variable argument list. + +**/ +VOID +EFIAPI +DebugBPrint ( + IN UINTN ErrorLevel, + IN CONST CHAR8 *Format, + IN BASE_LIST BaseListMarker + ) +{ + DebugPrintMarker (ErrorLevel, Format, mVaListNull, BaseListMarker); +} + + +/** + Prints an assert message containing a filename, line number, and description. + This may be followed by a breakpoint or a dead loop. + + Print a message of the form "ASSERT <FileName>(<LineNumber>): <Description>\n" + to the debug output device. If DEBUG_PROPERTY_ASSERT_BREAKPOINT_ENABLED bit of + PcdDebugProperyMask is set then CpuBreakpoint() is called. Otherwise, if + DEBUG_PROPERTY_ASSERT_DEADLOOP_ENABLED bit of PcdDebugProperyMask is set then + CpuDeadLoop() is called. If neither of these bits are set, then this function + returns immediately after the message is printed to the debug output device. + DebugAssert() must actively prevent recursion. If DebugAssert() is called while + processing another DebugAssert(), then DebugAssert() must return immediately. + + If FileName is NULL, then a <FileName> string of "(NULL) Filename" is printed. + If Description is NULL, then a <Description> string of "(NULL) Description" is printed. + + @param FileName The pointer to the name of the source file that generated + the assert condition. + @param LineNumber The line number in the source file that generated the + assert condition + @param Description The pointer to the description of the assert condition. + +**/ +VOID +EFIAPI +DebugAssert ( + IN CONST CHAR8 *FileName, + IN UINTN LineNumber, + IN CONST CHAR8 *Description + ) +{ + CHAR8 Buffer[MAX_DEBUG_MESSAGE_LENGTH]; + + if (!mPostEBS) { + // + // Generate the ASSERT() message in ASCII format + // + AsciiSPrint ( + Buffer, + sizeof (Buffer), + "ASSERT [%a] %a(%d): %a\n", + gEfiCallerBaseName, + FileName, + LineNumber, + Description + ); + + // + // Send the print string to EFI_DEBUGPORT_PROTOCOL.Write. + // + UefiDebugLibDebugPortProtocolWrite (Buffer, AsciiStrLen (Buffer)); + + // + // Generate a Breakpoint, DeadLoop, or NOP based on PCD settings + // + if ((PcdGet8(PcdDebugPropertyMask) & DEBUG_PROPERTY_ASSERT_BREAKPOINT_ENABLED) != 0) { + CpuBreakpoint (); + } else if ((PcdGet8(PcdDebugPropertyMask) & DEBUG_PROPERTY_ASSERT_DEADLOOP_ENABLED) != 0) { + CpuDeadLoop (); + } + } +} + + +/** + Fills a target buffer with PcdDebugClearMemoryValue, and returns the target buffer. + + This function fills Length bytes of Buffer with the value specified by + PcdDebugClearMemoryValue, and returns Buffer. + + If Buffer is NULL, then ASSERT(). + If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT(). + + @param Buffer The pointer to the target buffer to be filled with PcdDebugClearMemoryValue. + @param Length The number of bytes in Buffer to fill with zeros PcdDebugClearMemoryValue. + + @return Buffer The pointer to the target buffer filled with PcdDebugClearMemoryValue. + +**/ +VOID * +EFIAPI +DebugClearMemory ( + OUT VOID *Buffer, + IN UINTN Length + ) +{ + // + // If Buffer is NULL, then ASSERT(). + // + ASSERT (Buffer != NULL); + + // + // SetMem() checks for the the ASSERT() condition on Length and returns Buffer + // + return SetMem (Buffer, Length, PcdGet8(PcdDebugClearMemoryValue)); +} + + +/** + Returns TRUE if ASSERT() macros are enabled. + + This function returns TRUE if the DEBUG_PROPERTY_DEBUG_ASSERT_ENABLED bit of + PcdDebugProperyMask is set. Otherwise FALSE is returned. + + @retval TRUE The DEBUG_PROPERTY_DEBUG_ASSERT_ENABLED bit of PcdDebugProperyMask is set. + @retval FALSE The DEBUG_PROPERTY_DEBUG_ASSERT_ENABLED bit of PcdDebugProperyMask is clear. + +**/ +BOOLEAN +EFIAPI +DebugAssertEnabled ( + VOID + ) +{ + return (BOOLEAN) ((PcdGet8(PcdDebugPropertyMask) & DEBUG_PROPERTY_DEBUG_ASSERT_ENABLED) != 0); +} + + +/** + Returns TRUE if DEBUG() macros are enabled. + + This function returns TRUE if the DEBUG_PROPERTY_DEBUG_PRINT_ENABLED bit of + PcdDebugProperyMask is set. Otherwise FALSE is returned. + + @retval TRUE The DEBUG_PROPERTY_DEBUG_PRINT_ENABLED bit of PcdDebugProperyMask is set. + @retval FALSE The DEBUG_PROPERTY_DEBUG_PRINT_ENABLED bit of PcdDebugProperyMask is clear. + +**/ +BOOLEAN +EFIAPI +DebugPrintEnabled ( + VOID + ) +{ + return (BOOLEAN) ((PcdGet8(PcdDebugPropertyMask) & DEBUG_PROPERTY_DEBUG_PRINT_ENABLED) != 0); +} + + +/** + Returns TRUE if DEBUG_CODE() macros are enabled. + + This function returns TRUE if the DEBUG_PROPERTY_DEBUG_CODE_ENABLED bit of + PcdDebugProperyMask is set. Otherwise FALSE is returned. + + @retval TRUE The DEBUG_PROPERTY_DEBUG_CODE_ENABLED bit of PcdDebugProperyMask is set. + @retval FALSE The DEBUG_PROPERTY_DEBUG_CODE_ENABLED bit of PcdDebugProperyMask is clear. + +**/ +BOOLEAN +EFIAPI +DebugCodeEnabled ( + VOID + ) +{ + return (BOOLEAN) ((PcdGet8(PcdDebugPropertyMask) & DEBUG_PROPERTY_DEBUG_CODE_ENABLED) != 0); +} + + +/** + Returns TRUE if DEBUG_CLEAR_MEMORY() macro is enabled. + + This function returns TRUE if the DEBUG_PROPERTY_CLEAR_MEMORY_ENABLED bit of + PcdDebugProperyMask is set. Otherwise FALSE is returned. + + @retval TRUE The DEBUG_PROPERTY_CLEAR_MEMORY_ENABLED bit of PcdDebugProperyMask is set. + @retval FALSE The DEBUG_PROPERTY_CLEAR_MEMORY_ENABLED bit of PcdDebugProperyMask is clear. + +**/ +BOOLEAN +EFIAPI +DebugClearMemoryEnabled ( + VOID + ) +{ + return (BOOLEAN) ((PcdGet8(PcdDebugPropertyMask) & DEBUG_PROPERTY_CLEAR_MEMORY_ENABLED) != 0); +} + +/** + 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); +} + |