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Ventoy/EDK2/efiffs/org/src/logging.c

81 lines
2.4 KiB
C

/* logging.c - EFI logging */
/*
* Copyright © 2014-2017 Pete Batard <pete@akeo.ie>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "driver.h"
/* Not defined in gnu-efi yet */
#define SHELL_VARIABLE_GUID { \
0x158def5a, 0xf656, 0x419c, { 0xb0, 0x27, 0x7a, 0x31, 0x92, 0xc0, 0x79, 0xd2 } \
}
extern EFI_GUID gShellVariableGuid;
EFI_GUID ShellVariable = SHELL_VARIABLE_GUID;
static UINTN PrintNone(IN CONST CHAR16 *fmt, ... ) { return 0; }
Print_t PrintError = PrintNone;
Print_t PrintWarning = PrintNone;
Print_t PrintInfo = PrintNone;
Print_t PrintDebug = PrintNone;
Print_t PrintExtra = PrintNone;
Print_t* PrintTable[] = { &PrintError, &PrintWarning, &PrintInfo,
&PrintDebug, &PrintExtra };
/* Global driver verbosity level */
#if !defined(DEFAULT_LOGLEVEL)
#define DEFAULT_LOGLEVEL FS_LOGLEVEL_NONE
#endif
UINTN LogLevel = DEFAULT_LOGLEVEL;
/**
* Print status
*
* @v Status EFI status code
*/
VOID
PrintStatus(EFI_STATUS Status)
{
#if defined(__MAKEWITH_GNUEFI)
CHAR16 StatusString[64];
StatusToString(StatusString, Status);
// Make sure the Status is unsigned 32 bits
Print(L": [%d] %s\n", (Status & 0x7FFFFFFF), StatusString);
#else
Print(L": [%d]\n", (Status & 0x7FFFFFFF));
#endif
}
/*
* You can control the verbosity of the driver output by setting the shell environment
* variable FS_LOGGING to one of the values defined in the FS_LOGLEVEL constants
*/
VOID
SetLogging(VOID)
{
EFI_STATUS Status;
CHAR16 LogVar[4];
UINTN i, LogVarSize = sizeof(LogVar);
Status = RT->GetVariable(L"FS_LOGGING", &ShellVariable, NULL, &LogVarSize, LogVar);
if (Status == EFI_SUCCESS)
LogLevel = Atoi(LogVar);
for (i=0; i<ARRAYSIZE(PrintTable); i++)
*PrintTable[i] = (i < LogLevel)?(Print_t)Print:(Print_t)PrintNone;
PrintExtra(L"LogLevel = %d\n", LogLevel);
}