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https://github.com/CloverHackyColor/CloverBootloader.git
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124 lines
2.6 KiB
C
124 lines
2.6 KiB
C
/** @file
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Central logging module.
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Dispatches logs to defined loggers.
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Loggers can be enabled/disabled by PRINT_TO_* definitions in Common.h.
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By dmazar, 26/09/2012
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**/
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#include <Library/UefiLib.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/PrintLib.h>
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#include <Library/DebugLib.h>
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#include "Common.h"
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#include "MemLog.h"
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/** The size of buffer for one log line. */
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#define LOG_LINE_BUFFER_SIZE 1024
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/** Buffer for one log line. */
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CHAR8 *gLogLineBuffer = NULL;
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#if LOG_TO_FILE >= 1
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/** Pool for log into memory. */
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static MEM_LOG gMemLog;
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#endif
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/** Prints log messages to outputs defined by PRINT_TO_* defs in Common.h. */
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VOID
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EFIAPI
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LogPrint(CHAR8 *Format, ...)
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{
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VA_LIST Marker;
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UINTN DataWritten;
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if (gLogLineBuffer == NULL) {
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gLogLineBuffer = AllocateRuntimePool(LOG_LINE_BUFFER_SIZE);
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if (gLogLineBuffer == NULL) {
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return;
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}
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*gLogLineBuffer='\0';
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}
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// Safety check to avoid some cases where LogPrint may be run recursively
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if (*gLogLineBuffer != '\0') {
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return;
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}
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*gLogLineBuffer = '!'; // Make buffer "dirty" to indicate we are using it
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//
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// Print log to buffer
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//
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VA_START (Marker, Format);
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DataWritten = AsciiVSPrint(
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gLogLineBuffer,
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LOG_LINE_BUFFER_SIZE,
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Format,
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Marker);
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VA_END (Marker);
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if (DataWritten > 0) {
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//
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// Dispatch to various loggers
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//
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#if LOG_TO_SCREEN == 1
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#if CAPTURE_CONSOLE_OUTPUT >= 1
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// Print to screen only if not invoked from our OutputString() override
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if (InBootServices && !InConsolePrint) {
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InConsolePrint = TRUE;
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AsciiPrint(gLogLineBuffer);
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InConsolePrint = FALSE;
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}
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#else
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if (InBootServices) {
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AsciiPrint(gLogLineBuffer);
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}
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#endif
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#endif
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#if LOG_TO_SERIAL >= 1
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#if (CAPTURE_CONSOLE_OUTPUT >= 1) && (LOG_TO_SERIAL == 1)
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// Print to serial only if not invoked from our OutputString() override
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if (!InBootServices || !InConsolePrint) {
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DebugPrint(1, gLogLineBuffer);
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}
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#else
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DebugPrint(1, gLogLineBuffer);
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#endif
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#endif
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#if LOG_TO_FILE >= 1
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if (InBootServices) {
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MemLogPrint(&gMemLog, gLogLineBuffer);
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}
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#endif
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}
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*gLogLineBuffer = '\0';
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}
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/** Called when ExitBootServices() is executed to give loggers a chance
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* to use boot services (to save log to file for example).
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*/
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VOID
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LogOnExitBootServices(VOID)
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{
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#if LOG_TO_FILE >= 1
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EFI_STATUS Status;
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Status = MemLogSave(&gMemLog);
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if (EFI_ERROR(Status)) {
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Print(L"ERROR saving log to a file: %r\n", Status);
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gBS->Stall(3000000);
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}
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#endif
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}
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