VOID BoardInformation(void)
{
UINT8 tCPLD_LOGIC_VERSION;
UINT8 tPRODUCT_VERSION;
UINT8 tCPLD_LOGIC_COMPLIER_YEAR;
UINT8 tCPLD_LOGIC_COMPLIER_MONTH;
UINT8 tCPLD_LOGIC_COMPLIER_DAY;
UINT8 tCPLD_LOGIC_COMPLIER_HOUR;
UINT8 tCPLD_LOGIC_COMPLIER_MINUTE;
UINT8 tBOARD_ID;
UINT8 tBOM_VERSION;
DEBUG((EFI_D_ERROR, "------------------------------------------------------\n"));
tCPLD_LOGIC_VERSION = ReadCpldReg(CPLD_LOGIC_VERSION);
tPRODUCT_VERSION = ReadCpldReg(PRODUCT_VERSION);
tCPLD_LOGIC_COMPLIER_YEAR = ReadCpldReg(CPLD_LOGIC_COMPLIER_YEAR);
tCPLD_LOGIC_COMPLIER_MONTH = ReadCpldReg(CPLD_LOGIC_COMPLIER_MONTH);
tCPLD_LOGIC_COMPLIER_DAY = ReadCpldReg(CPLD_LOGIC_COMPLIER_DAY);
tCPLD_LOGIC_COMPLIER_HOUR = ReadCpldReg(CPLD_LOGIC_COMPLIER_HOUR);
tCPLD_LOGIC_COMPLIER_MINUTE = ReadCpldReg(CPLD_LOGIC_COMPLIER_MINUTE);
tBOARD_ID = ReadCpldReg(BOARD_ID);
tBOM_VERSION = ReadCpldReg(BOM_VERSION);
DEBUG((EFI_D_ERROR, "Logic Version: %02d\n",tCPLD_LOGIC_VERSION));
DEBUG((EFI_D_ERROR, "Product Version: %02d\n",tPRODUCT_VERSION));
DEBUG((EFI_D_ERROR, "CPLD Logic Build time: 20%02d-%02d-%02d %02d:%02d\n",tCPLD_LOGIC_COMPLIER_YEAR,tCPLD_LOGIC_COMPLIER_MONTH,
tCPLD_LOGIC_COMPLIER_DAY,tCPLD_LOGIC_COMPLIER_HOUR,tCPLD_LOGIC_COMPLIER_MINUTE));
DEBUG((EFI_D_ERROR, "Board ID: %02d\n",tBOARD_ID));
DEBUG((EFI_D_ERROR, "BOM Version: %02d\n",tBOM_VERSION));
return;
}
EFI_STATUS
SwitchRtcI2cChannelAndLock (
VOID
)
{
UINT8 Temp;
UINT8 Count;
for (Count = 0; Count < 20; Count++) {
Temp = ReadCpldReg (CPLD_I2C_SWITCH_FLAG);
if ((Temp & BMC_I2C_STATUS) != 0) {
//The I2C channel is shared with BMC,
//Check if BMC has taken ownership of I2C.
//If so, wait 30ms, then try again.
//If not, start using I2C.
//And the CPLD_I2C_SWITCH_FLAG will be set to CPU_GET_I2C_CONTROL
//BMC will check this flag to decide to use I2C or not.
MicroSecondDelay (30000);
continue;
}
Temp = ReadCpldReg (CPLD_I2C_SWITCH_FLAG);
Temp = Temp | CPU_GET_I2C_CONTROL;
WriteCpldReg (CPLD_I2C_SWITCH_FLAG, Temp);
//This is empirical value,give cpld some time to make sure the
//value is wrote in
MicroSecondDelay (2);
Temp = ReadCpldReg (CPLD_I2C_SWITCH_FLAG);
if ((Temp & CPU_GET_I2C_CONTROL) == CPU_GET_I2C_CONTROL) {
return EFI_SUCCESS;
}
//There need 30ms to keep consistent with the previous loops if the CPU failed
//to get control of I2C
MicroSecondDelay (30000);
}
Temp = ReadCpldReg (CPLD_I2C_SWITCH_FLAG);
Temp = Temp & ~CPU_GET_I2C_CONTROL;
WriteCpldReg (CPLD_I2C_SWITCH_FLAG, Temp);
return EFI_NOT_READY;
}
UINT32 OemGetCurrentBiosChannel(VOID)
{
UINTN RegAddr = CPLD_BIOS_CURRENT_CHANNEL_REG_D02;
UINT8 Value;
Value = ReadCpldReg(RegAddr);
if (1==(Value&0x01))
{
return 1;
}
else
{
return 0;
}
}
/**
Sets the current local time and date information.
@param Time A pointer to the current time.
@retval EFI_SUCCESS The operation completed successfully.
@retval EFI_INVALID_PARAMETER A time field is out of range.
@retval EFI_DEVICE_ERROR The time could not be set due due to hardware error.
**/
EFI_STATUS
EFIAPI
LibSetTime (
IN EFI_TIME *Time
)
{
EFI_STATUS Status = EFI_SUCCESS;
I2C_DEVICE Dev;
UINT8 Temp;
UINT16 BaseYear = 1900;
// Check the input parameters are within the range specified by UEFI
if(!IsTimeValid(Time)){
return EFI_INVALID_PARAMETER;
}
Status = SwitchRtcI2cChannelAndLock();
if(EFI_ERROR (Status)) {
return Status;
}
// Initialize the hardware if not already done
if (!mDS3231Initialized) {
Status = InitializeDS3231 ();
if (EFI_ERROR (Status)) {
goto EXIT;
}
}
(VOID) CopyMem(&Dev, &gDS3231RtcDevice, sizeof(Dev));
Temp = ((Time->Second/10)<<4) | (Time->Second%10);
MicroSecondDelay(1000);
Status = I2CWrite(&Dev,DS3231_REGADDR_SECONDS,1,&Temp);
if(EFI_ERROR (Status)){
goto EXIT;
}
Temp = ((Time->Minute/10)<<4) | (Time->Minute%10);
MicroSecondDelay(1000);
Status = I2CWrite(&Dev,DS3231_REGADDR_MIUTES,1,&Temp);
if(EFI_ERROR (Status)){
goto EXIT;
}
Temp = 0;
if(Time->Hour > 19){
Temp = 2;
} else if(Time->Hour > 9){
Temp = 1;
}
Temp = (Temp << 4) | (Time->Hour%10);
MicroSecondDelay(1000);
Status = I2CWrite(&Dev,DS3231_REGADDR_HOURS,1,&Temp);
if(EFI_ERROR (Status)){
goto EXIT;
}
Temp = ((Time->Day/10)<<4) | (Time->Day%10);
MicroSecondDelay(1000);
Status = I2CWrite(&Dev,DS3231_REGADDR_DATE,1,&Temp);
if(EFI_ERROR (Status)){
goto EXIT;
}
Temp = 0;
if(Time->Year >= 2000){
Temp = 0x8;
BaseYear = 2000;
}
if(Time->Month > 9){
Temp |= 0x1;
}
Temp = (Temp<<4) | (Time->Month%10);
MicroSecondDelay(1000);
Status = I2CWrite(&Dev,DS3231_REGADDR_MONTH,1,&Temp);
if(EFI_ERROR (Status)){
goto EXIT;
}
Temp = (((Time->Year-BaseYear)/10)<<4) | (Time->Year%10);
MicroSecondDelay(1000);
Status = I2CWrite(&Dev,DS3231_REGADDR_YEAR,1,&Temp);
if(EFI_ERROR (Status)){
goto EXIT;
}
EXIT:
Temp = ReadCpldReg (CPLD_I2C_SWITCH_FLAG);
Temp = Temp & ~CPU_GET_I2C_CONTROL;
WriteCpldReg (CPLD_I2C_SWITCH_FLAG, Temp);
return Status;
}
/**
Returns the current time and date information, and the time-keeping capabilities
of the hardware platform.
@param Time A pointer to storage to receive a snapshot of the current time.
@param Capabilities An optional pointer to a buffer to receive the real time clock
device's capabilities.
@retval EFI_SUCCESS The operation completed successfully.
@retval EFI_INVALID_PARAMETER Time is NULL.
@retval EFI_DEVICE_ERROR The time could not be retrieved due to hardware error.
@retval EFI_SECURITY_VIOLATION The time could not be retrieved due to an authentication failure.
**/
EFI_STATUS
EFIAPI
LibGetTime (
OUT EFI_TIME *Time,
OUT EFI_TIME_CAPABILITIES *Capabilities
)
{
EFI_STATUS Status = EFI_SUCCESS;
UINT8 Temp;
UINT8 BaseHour = 0;
UINT16 BaseYear = 1900;
I2C_DEVICE Dev;
// Ensure Time is a valid pointer
if (NULL == Time) {
return EFI_INVALID_PARAMETER;
}
Status = SwitchRtcI2cChannelAndLock();
if(EFI_ERROR (Status)) {
return Status;
}
// Initialize the hardware if not already done
if (!mDS3231Initialized) {
Status = InitializeDS3231 ();
if (EFI_ERROR (Status)) {
Status = EFI_NOT_READY;
goto GExit;
}
}
(VOID) CopyMem(&Dev, &gDS3231RtcDevice, sizeof(Dev));
Status |= I2CRead(&Dev,DS3231_REGADDR_MONTH,1,&Temp);
Time->Month = ((Temp>>4)&1)*10+(Temp&0x0F);
if(Temp&0x80){
BaseYear = 2000;
}
Status |= I2CRead(&Dev,DS3231_REGADDR_YEAR,1,&Temp);
Time->Year = BaseYear+(Temp>>4) *10 + (Temp&0x0F);
Status |= I2CRead(&Dev,DS3231_REGADDR_DATE,1,&Temp);
Time->Day = ((Temp>>4)&3) *10 + (Temp&0x0F);
Status |= I2CRead(&Dev,DS3231_REGADDR_HOURS,1,&Temp);
BaseHour = 0;
if((Temp&0x30) == 0x30){
Status = EFI_DEVICE_ERROR;
goto GExit;
}else if(Temp&0x20){
BaseHour = 20;
}else if(Temp&0x10){
BaseHour = 10;
}
Time->Hour = BaseHour + (Temp&0x0F);
Status |= I2CRead(&Dev,DS3231_REGADDR_MIUTES,1,&Temp);
Time->Minute = ((Temp>>4)&7) * 10 + (Temp&0x0F);
Status |= I2CRead(&Dev,DS3231_REGADDR_SECONDS,1,&Temp);
Time->Second = (Temp>>4) * 10 + (Temp&0x0F);
Time->Nanosecond = 0;
Time->Daylight = 0;
Time->TimeZone = EFI_UNSPECIFIED_TIMEZONE;
if((EFI_ERROR(Status)) || (!IsTimeValid(Time)) || ((Time->Year - BaseYear) > 99)) {
Status = EFI_UNSUPPORTED;
}
GExit:
Temp = ReadCpldReg (CPLD_I2C_SWITCH_FLAG);
Temp = Temp & ~CPU_GET_I2C_CONTROL;
WriteCpldReg (CPLD_I2C_SWITCH_FLAG, Temp);
return Status;
}
/**
Returns the current time and date information, and the time-keeping capabilities
of the hardware platform.
@param Time A pointer to storage to receive a snapshot of the current time.
@param Capabilities An optional pointer to a buffer to receive the real time clock
device's capabilities.
@retval EFI_SUCCESS The operation completed successfully.
@retval EFI_INVALID_PARAMETER Time is NULL.
@retval EFI_DEVICE_ERROR The time could not be retrieved due to hardware error.
@retval EFI_SECURITY_VIOLATION The time could not be retrieved due to an authentication failure.
**/
EFI_STATUS
EFIAPI
LibGetTime (
OUT EFI_TIME *Time,
OUT EFI_TIME_CAPABILITIES *Capabilities
)
{
EFI_STATUS Status = EFI_SUCCESS;
UINT8 Temp;
UINT8 BaseHour = 0;
UINT16 BaseYear = 1900;
I2C_DEVICE Dev;
// Ensure Time is a valid pointer
if (NULL == Time) {
return EFI_INVALID_PARAMETER;
}
Temp = ReadCpldReg(0x17);
while( (Temp & BIT3) != 0)
{
Temp = ReadCpldReg(0x17);
}
WriteCpldReg(0x17,0x4);
// Initialize the hardware if not already done
if (!mDS3231Initialized) {
Status = InitializeDS3231 ();
if (EFI_ERROR (Status)) {
return EFI_NOT_READY;
}
}
(VOID) CopyMem(&Dev, &gDS3231RtcDevice, sizeof(Dev));
//获取月份
Status |= I2CRead(&Dev,DS3231_REGADDR_MONTH,1,&Temp);
Time->Month = ((Temp>>4)&1)*10+(Temp&0x0F);
if(Temp&0x80){
BaseYear = 2000; //跨过了一个世纪
}
//获取年份
Status |= I2CRead(&Dev,DS3231_REGADDR_YEAR,1,&Temp);
Time->Year = BaseYear+(Temp>>4) *10 + (Temp&0x0F);
//获取日期
Status |= I2CRead(&Dev,DS3231_REGADDR_DATE,1,&Temp);
Time->Day = ((Temp>>4)&3) *10 + (Temp&0x0F);
//获取小时
Status |= I2CRead(&Dev,DS3231_REGADDR_HOURS,1,&Temp);
BaseHour = 0;
if((Temp&0x30) == 0x30){
return EFI_DEVICE_ERROR;
}else if(Temp&0x20){
BaseHour = 20;
}else if(Temp&0x10){
BaseHour = 10;
}
Time->Hour = BaseHour + (Temp&0x0F);
//获取分钟
Status |= I2CRead(&Dev,DS3231_REGADDR_MIUTES,1,&Temp);
Time->Minute = ((Temp>>4)&7) * 10 + (Temp&0x0F);
//获取秒数
Status |= I2CRead(&Dev,DS3231_REGADDR_SECONDS,1,&Temp);
Time->Second = (Temp>>4) * 10 + (Temp&0x0F);
Time->Nanosecond = 0;
Time->Daylight = 0;
Time->TimeZone = EFI_UNSPECIFIED_TIMEZONE;
if((EFI_ERROR(Status)) || (!TimeValid(Time)) || ((Time->Year - BaseYear) > 99)) {
return EFI_DEVICE_ERROR;
}
WriteCpldReg(0x17,0x0);
return EFI_SUCCESS;
}
