/**
* ImcSleep - IMC Sleep.
*
*
* @param[in] FchDataPtr Fch configuration structure pointer.
*
*/
VOID
ImcSleep (
IN VOID *FchDataPtr
)
{
UINT8 Msgdata;
FCH_DATA_BLOCK *LocalCfgPtr;
AMD_CONFIG_PARAMS *StdHeader;
LocalCfgPtr = (FCH_DATA_BLOCK *) FchDataPtr;
StdHeader = LocalCfgPtr->StdHeader;
if (!(IsImcEnabled (StdHeader)) ) {
return; ///IMC is not enabled
}
Msgdata = 0x00;
WriteECmsg (MSG_REG0, AccessWidth8, &Msgdata, StdHeader);
Msgdata = 0xB4;
WriteECmsg (MSG_REG1, AccessWidth8, &Msgdata, StdHeader);
Msgdata = 0x00;
WriteECmsg (MSG_REG2, AccessWidth8, &Msgdata, StdHeader);
Msgdata = 0x96;
WriteECmsg (MSG_SYS_TO_IMC, AccessWidth8, &Msgdata, StdHeader);
WaitForEcLDN9MailboxCmdAck (StdHeader);
}
/**
* ImcDisableSurebootTimer - IMC Disable Sureboot Timer.
*
*
* @param[in] FchDataPtr Fch configuration structure pointer.
*
*/
VOID
ImcDisableSurebootTimer (
IN VOID *FchDataPtr
)
{
UINT8 Msgdata;
AMD_CONFIG_PARAMS *StdHeader;
StdHeader = ((FCH_DATA_BLOCK *) FchDataPtr)->StdHeader;
if (!(IsImcEnabled (StdHeader)) ) {
return; ///IMC is not enabled
}
ImcWakeup (FchDataPtr);
Msgdata = 0x00;
WriteECmsg (MSG_REG0, AccessWidth8, &Msgdata, StdHeader);
Msgdata = 0x01;
WriteECmsg (MSG_REG1, AccessWidth8, &Msgdata, StdHeader);
Msgdata = 0x00;
WriteECmsg (MSG_REG2, AccessWidth8, &Msgdata, StdHeader);
Msgdata = 0x94;
WriteECmsg (MSG_SYS_TO_IMC, AccessWidth8, &Msgdata, StdHeader);
WaitForEcLDN9MailboxCmdAck (StdHeader);
ImcSleep (FchDataPtr);
}
/**
* ImcCrashReset - IMC Crash Reset
*
*
* @param[in] FchDataPtr Fch configuration structure pointer.
*
*/
VOID
ImcCrashReset (
IN VOID *FchDataPtr
)
{
UINT8 Msgdata;
FCH_DATA_BLOCK *LocalCfgPtr;
AMD_CONFIG_PARAMS *StdHeader;
LocalCfgPtr = (FCH_DATA_BLOCK *) FchDataPtr;
StdHeader = LocalCfgPtr->StdHeader;
if (!(IsImcEnabled (StdHeader)) ) {
return; ///IMC is not enabled
}
ReadECmsg (MSG_REG0, AccessWidth8, &Msgdata, StdHeader);
if ( Msgdata != 0xfa) {
ReadECmsg (MSG_REGA, AccessWidth8, &Msgdata, StdHeader);
if ( Msgdata != 0x5A ) {
ReadECmsg (MSG_REGB, AccessWidth8, &Msgdata, StdHeader);
if ( Msgdata != 0xA5 ) {
// Set up MSG_REGA = 0x5A and MSG_REGB = 0xA5 as a flag to indicate IMC has been
// reset once already, this is to prevent repeating the reset forever.
Msgdata = 0x5A;
WriteECmsg (MSG_REGA, AccessWidth8, &Msgdata, StdHeader);
Msgdata = 0xA5;
WriteECmsg (MSG_REGB, AccessWidth8, &Msgdata, StdHeader);
SoftwareDisableImc (LocalCfgPtr);
}
}
}
}