mirror of https://github.com/acidanthera/audk.git
301 lines
8.4 KiB
C
301 lines
8.4 KiB
C
/** @file
|
|
UEFI Debug Library that uses PrintLib to send messages to CONOUT.
|
|
|
|
Copyright (c) 2006, Intel Corporation<BR>
|
|
All rights reserved. This program and the accompanying materials
|
|
are licensed and made available under the terms and conditions of the BSD License
|
|
which accompanies this distribution. The full text of the license may be found at
|
|
http://opensource.org/licenses/bsd-license.php
|
|
|
|
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
|
|
|
|
**/
|
|
|
|
//
|
|
// Define the maximum debug and assert message length that this library supports.
|
|
//
|
|
#define MAX_DEBUG_MESSAGE_LENGTH 0x100
|
|
|
|
STATIC BOOLEAN mDebugLevelInstalled = FALSE;
|
|
STATIC EFI_DEBUG_LEVEL_PROTOCOL mDebugLevel = { 0 };
|
|
|
|
/**
|
|
Installs Debug Level Protocol.
|
|
|
|
The constructor function installs Debug Level Protocol on the ImageHandle.
|
|
It will ASSERT() if the installation fails and will always return EFI_SUCCESS.
|
|
|
|
@param ImageHandle The firmware allocated handle for the EFI image.
|
|
@param SystemTable A pointer to the EFI System Table.
|
|
|
|
@retval EFI_SUCCESS The constructor always returns EFI_SUCCESS.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
DebugLibConstructor (
|
|
IN EFI_HANDLE ImageHandle,
|
|
IN EFI_SYSTEM_TABLE *SystemTable
|
|
)
|
|
{
|
|
EFI_STATUS Status;
|
|
|
|
//
|
|
// Initialize Debug Level Protocol.
|
|
//
|
|
mDebugLevel.DebugLevel = PcdGet32(PcdDebugPrintErrorLevel);
|
|
|
|
//
|
|
// Install Debug Level Protocol.
|
|
//
|
|
Status = gBS->InstallMultipleProtocolInterfaces (
|
|
&ImageHandle,
|
|
&gEfiDebugLevelProtocolGuid,
|
|
&mDebugLevel,
|
|
NULL
|
|
);
|
|
ASSERT_EFI_ERROR (Status);
|
|
|
|
//
|
|
// Set flag to show that the Debug Level Protocol has been installed.
|
|
//
|
|
mDebugLevelInstalled = TRUE;
|
|
|
|
return Status;
|
|
}
|
|
|
|
/**
|
|
|
|
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 PcdDebugPrintErrorLevel, 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.
|
|
|
|
**/
|
|
VOID
|
|
EFIAPI
|
|
DebugPrint (
|
|
IN UINTN ErrorLevel,
|
|
IN CONST CHAR8 *Format,
|
|
...
|
|
)
|
|
{
|
|
CHAR16 Buffer[MAX_DEBUG_MESSAGE_LENGTH];
|
|
VA_LIST Marker;
|
|
|
|
//
|
|
// If Format is NULL, then ASSERT().
|
|
//
|
|
ASSERT (Format != NULL);
|
|
|
|
//
|
|
// Check driver Debug Level value and global debug level
|
|
//
|
|
if (mDebugLevelInstalled) {
|
|
if ((ErrorLevel & mDebugLevel.DebugLevel) == 0) {
|
|
return;
|
|
}
|
|
} else {
|
|
if ((ErrorLevel & PcdGet32(PcdDebugPrintErrorLevel)) == 0) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
//
|
|
// Convert the DEBUG() message to a Unicode String
|
|
//
|
|
VA_START (Marker, Format);
|
|
UnicodeVSPrintAsciiFormat (Buffer, sizeof (Buffer), Format, Marker);
|
|
VA_END (Marker);
|
|
|
|
//
|
|
// Send the print string to the Console Output device if CONOUT is available.
|
|
//
|
|
if (gST->ConOut != NULL) {
|
|
gST->ConOut->OutputString (gST->ConOut, Buffer);
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
|
|
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 recusrsion. 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 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 Pointer to the description of the assert condition.
|
|
|
|
**/
|
|
VOID
|
|
EFIAPI
|
|
DebugAssert (
|
|
IN CONST CHAR8 *FileName,
|
|
IN UINTN LineNumber,
|
|
IN CONST CHAR8 *Description
|
|
)
|
|
{
|
|
CHAR16 Buffer[MAX_DEBUG_MESSAGE_LENGTH];
|
|
|
|
//
|
|
// Generate the ASSERT() message in Unicode format
|
|
//
|
|
UnicodeSPrintAsciiFormat (Buffer, sizeof (Buffer), "ASSERT %s(%d): %s\n", FileName, LineNumber, Description);
|
|
|
|
//
|
|
// Send the print string to the Console Output device if CONOUT is available.
|
|
//
|
|
if (gST->ConOut != NULL) {
|
|
gST->ConOut->OutputString (gST->ConOut, 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 Pointer to the target buffer to fill with PcdDebugClearMemoryValue.
|
|
@param Length Number of bytes in Buffer to fill with zeros PcdDebugClearMemoryValue.
|
|
|
|
@return Buffer
|
|
|
|
**/
|
|
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 ((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 ((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 ((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_DEBUG_CLEAR_MEMORY_ENABLED bit of
|
|
PcdDebugProperyMask is set. Otherwise FALSE is returned.
|
|
|
|
@retval TRUE The DEBUG_PROPERTY_DEBUG_CLEAR_MEMORY_ENABLED bit of PcdDebugProperyMask is set.
|
|
@retval FALSE The DEBUG_PROPERTY_DEBUG_CLEAR_MEMORY_ENABLED bit of PcdDebugProperyMask is clear.
|
|
|
|
**/
|
|
BOOLEAN
|
|
EFIAPI
|
|
DebugClearMemoryEnabled (
|
|
VOID
|
|
)
|
|
{
|
|
return ((PcdGet8(PcdDebugPropertyMask) & DEBUG_PROPERTY_CLEAR_MEMORY_ENABLED) != 0);
|
|
}
|