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Gather log during boot

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This commit is contained in:
Lauri Kenttä
2023-11-17 18:29:51 +02:00
parent e93ed54cb2
commit db934099df
9 changed files with 141 additions and 67 deletions
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27
src/util.c
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@@ -14,8 +14,31 @@ const CHAR16* TmpStr(CHAR8 *src, int length) {
return dest;
}
UINTN NullPrint(IN CONST CHAR16 *fmt, ...) {
return 0;
#define log_buffer_size (65536)
CHAR16 log_buffer[log_buffer_size] = {0};
CHAR16 LogVarName[] = L"HackBGRTLog";
EFI_GUID LogVarGuid = {0x03c64761, 0x075f, 0x4dba, {0xab, 0xfb, 0x2e, 0xd8, 0x9e, 0x18, 0xb2, 0x36}}; // self-made: 03c64761-075f-4dba-abfb-2ed89e18b236
void Log(int print, IN CONST CHAR16 *fmt, ...) {
va_list args;
CHAR16 buf[256];
va_start(args, fmt);
VSPrint(buf, sizeof(buf), fmt, args); // size is in bytes, not CHAR16s
va_end(args);
if (print) {
Print(L"%s", buf);
}
StrnCat(log_buffer, buf, log_buffer_size - StrLen(log_buffer) - 1);
LibSetVariable(LogVarName, &LogVarGuid, StrLen(log_buffer) * 2, log_buffer);
}
void DumpLog(void) {
Print(L"%s", log_buffer);
}
void ClearLogVariable(void) {
LibDeleteVariable(LogVarName, &LogVarGuid);
}
const CHAR16* TrimLeft(const CHAR16* s) {