mirror of https://github.com/acidanthera/audk.git
161 lines
4.5 KiB
C
161 lines
4.5 KiB
C
/** @file
|
|
Adjust Default System Time.
|
|
|
|
Copyright (c) 2015, Intel Corporation. All rights reserved.<BR>
|
|
|
|
This program and the accompanying materials are licensed and made available under
|
|
the terms and conditions of the BSD License that 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.
|
|
|
|
--*/
|
|
|
|
#include <PlatformDxe.h>
|
|
|
|
//
|
|
// Date and time initial values.
|
|
// They are used if the RTC values are invalid during driver initialization
|
|
//
|
|
#define RTC_INIT_SECOND 0
|
|
#define RTC_INIT_MINUTE 0
|
|
#define RTC_INIT_HOUR 0
|
|
|
|
CHAR16 mBiosReleaseDate[20];
|
|
|
|
/**
|
|
Convert a single character to number.
|
|
It assumes the input Char is in the scope of L'0' ~ L'9' and L'A' ~ L'F'
|
|
|
|
@param Char The input char which need to change to a hex number.
|
|
|
|
**/
|
|
UINTN
|
|
CharToUint (
|
|
IN CHAR16 Char
|
|
)
|
|
{
|
|
if ((Char >= L'0') && (Char <= L'9')) {
|
|
return (UINTN) (Char - L'0');
|
|
}
|
|
|
|
if ((Char >= L'A') && (Char <= L'F')) {
|
|
return (UINTN) (Char - L'A' + 0xA);
|
|
}
|
|
|
|
ASSERT (FALSE);
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
See if YEAR field of a variable of EFI_TIME type is correct.
|
|
|
|
@param Time The time to be checked.
|
|
|
|
@retval EFI_INVALID_PARAMETER Some fields of Time are not correct.
|
|
@retval EFI_SUCCESS Time is a valid EFI_TIME variable.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
CheckRtcTimeFields (
|
|
IN EFI_TIME *Time
|
|
)
|
|
{
|
|
UINT16 YearBuilt;
|
|
|
|
YearBuilt = (UINT16)(CharToUint(mBiosReleaseDate[8])*10 + CharToUint(mBiosReleaseDate[9]) + 2000);
|
|
|
|
if ((Time->Year) < YearBuilt) {
|
|
return EFI_INVALID_PARAMETER;
|
|
}
|
|
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
/**
|
|
ExitPmAuth Protocol notification event handler, which set initial system time to be
|
|
the time when BIOS was built.
|
|
|
|
@param[in] Event Event whose notification function is being invoked.
|
|
@param[in] Context Pointer to the notification function's context.
|
|
|
|
**/
|
|
VOID
|
|
EFIAPI
|
|
AdjustDefaultRtcTimeCallback (
|
|
IN EFI_EVENT Event,
|
|
IN VOID *Context
|
|
)
|
|
{
|
|
EFI_STATUS Status;
|
|
EFI_TIME EfiTime;
|
|
CHAR16 BiosVersion[60];
|
|
CHAR16 BiosReleaseTime[20];
|
|
//
|
|
// Get BIOS built time from Bios-ID.
|
|
//
|
|
|
|
SetMem(BiosVersion, sizeof(BiosVersion), 0);
|
|
SetMem(mBiosReleaseDate, sizeof(mBiosReleaseDate), 0);
|
|
SetMem(BiosReleaseTime, sizeof(BiosReleaseTime), 0);
|
|
|
|
Status = GetBiosVersionDateTime (BiosVersion, mBiosReleaseDate, BiosReleaseTime);
|
|
ASSERT_EFI_ERROR(Status);
|
|
if (EFI_ERROR (Status)) {
|
|
return;
|
|
}
|
|
|
|
//
|
|
// Get current RTC time.
|
|
//
|
|
Status = gRT->GetTime (&EfiTime, NULL);
|
|
|
|
//
|
|
// Validate RTC time fields
|
|
//
|
|
Status = CheckRtcTimeFields (&EfiTime);
|
|
|
|
if (EFI_ERROR (Status)) {
|
|
//
|
|
// Date such as Dec 28th of 2015
|
|
//
|
|
// Month
|
|
// BiosReleaseDate[0] = '1';
|
|
// BiosReleaseDate[1] = '2';
|
|
//
|
|
// Day
|
|
// BiosReleaseDate[3] = '2';
|
|
// BiosReleaseDate[4] = '8';
|
|
//
|
|
//
|
|
// Year
|
|
//
|
|
// BiosReleaseDate[6] = '2';
|
|
// BiosReleaseDate[7] = '0';
|
|
// BiosReleaseDate[8] = '1'
|
|
// BiosReleaseDate[9] = '5';
|
|
|
|
EfiTime.Second = RTC_INIT_SECOND;
|
|
EfiTime.Minute = RTC_INIT_MINUTE;
|
|
EfiTime.Hour = RTC_INIT_HOUR;
|
|
EfiTime.Day = (UINT8)(CharToUint(mBiosReleaseDate[3])*10 + CharToUint(mBiosReleaseDate[4]));
|
|
EfiTime.Month = (UINT8)(CharToUint(mBiosReleaseDate[0])*10 + CharToUint(mBiosReleaseDate[1]));
|
|
EfiTime.Year = (UINT16)(CharToUint(mBiosReleaseDate[8])*10 + CharToUint(mBiosReleaseDate[9]) + 2000);
|
|
EfiTime.Nanosecond = 0;
|
|
EfiTime.TimeZone = EFI_UNSPECIFIED_TIMEZONE;
|
|
EfiTime.Daylight = 1;
|
|
|
|
DEBUG ((EFI_D_INFO, "Day:%d Month:%d Year:%d \n", (UINT32)EfiTime.Day, (UINT32)EfiTime.Month, (UINT32)EfiTime.Year));
|
|
|
|
//
|
|
// Reset time value according to new RTC configuration
|
|
//
|
|
Status = gRT->SetTime (&EfiTime);
|
|
ASSERT_EFI_ERROR(Status);
|
|
}
|
|
|
|
return;
|
|
}
|