mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-12-04 13:23:26 +01:00
84 lines
2.1 KiB
C
84 lines
2.1 KiB
C
/**
|
|
|
|
NVRAM debug stuff.
|
|
|
|
by dmazar
|
|
|
|
**/
|
|
|
|
#include <Library/UefiLib.h>
|
|
#include <Library/UefiRuntimeServicesTableLib.h>
|
|
#include <Library/DebugLib.h>
|
|
#include <Library/PrintLib.h>
|
|
|
|
#include "NVRAMDebug.h"
|
|
|
|
|
|
// DBG_TO: 0=no debug, 1=serial, 2=console
|
|
// serial requires
|
|
// [PcdsFixedAtBuild]
|
|
// gEfiMdePkgTokenSpaceGuid.PcdDebugPropertyMask|0x07
|
|
// gEfiMdePkgTokenSpaceGuid.PcdDebugPrintErrorLevel|0xFFFFFFFF
|
|
// in package DSC file
|
|
#define DBG_TO 0
|
|
|
|
#if DBG_TO == 2
|
|
#define DBG(...) AsciiPrint(__VA_ARGS__);
|
|
#elif DBG_TO == 1
|
|
#define DBG(...) DebugPrint(1, __VA_ARGS__);
|
|
#else
|
|
#define DBG(...)
|
|
#endif
|
|
|
|
|
|
// NVRAM var guid.
|
|
EFI_GUID gEfiNVRAMDebugVarGuid = DEBUG_LOG_NVRAM_VAR_GUID;
|
|
|
|
// Debug log buffer.
|
|
CHAR8 DebugLogBuffer[DEBUG_LOG_SIZE];
|
|
// Pointer to the current end (beginning of a free space) of the log in the buffer.
|
|
CHAR8 *DebugLogBufferPtr = NULL;
|
|
|
|
|
|
/** Appends given data to the log and writes it to NVRAM variable. */
|
|
EFI_STATUS EFIAPI
|
|
NVRAMDebugLog(CHAR8 *Format, ...)
|
|
{
|
|
EFI_STATUS Status;
|
|
VA_LIST Marker;
|
|
UINTN DataSize;
|
|
UINTN DataWritten;
|
|
|
|
if (DebugLogBufferPtr == NULL) {
|
|
// init pointer to the buffer start
|
|
DebugLogBufferPtr = DebugLogBuffer;
|
|
}
|
|
DataSize = DEBUG_LOG_SIZE - (DebugLogBufferPtr - DebugLogBuffer);
|
|
|
|
if (DataSize < 2) {
|
|
return EFI_BUFFER_TOO_SMALL;
|
|
}
|
|
|
|
// add text to buffer
|
|
VA_START (Marker, Format);
|
|
DataWritten = AsciiVSPrint(DebugLogBufferPtr, DataSize, Format, Marker);
|
|
VA_END (Marker);
|
|
|
|
DebugLogBufferPtr += DataWritten;
|
|
|
|
// delete prev value
|
|
//Status = gRT->SetVariable(L"DebugLog", &gEfiNVRAMDebugVarGuid,
|
|
// EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_NON_VOLATILE,
|
|
// 0, DebugLogBuffer);
|
|
// write new value
|
|
Status = gRT->SetVariable(
|
|
DEBUG_LOG_NVRAM_VAR_NAME,
|
|
&gEfiNVRAMDebugVarGuid,
|
|
EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_NON_VOLATILE,
|
|
DebugLogBufferPtr - DebugLogBuffer,
|
|
DebugLogBuffer
|
|
);
|
|
|
|
return Status;
|
|
}
|