/**
* Main entry point for the AMD_INIT_RESET function.
*
* This entry point is responsible for establishing the HT links to the program
* ROM and for performing basic processor initialization.
*
* @param[in,out] ResetParams Required input parameters for the AMD_INIT_RESET
* entry point.
*
* @return Aggregated status across all internal AMD reset calls invoked.
*
*/
AGESA_STATUS
AmdInitReset (
IN OUT AMD_RESET_PARAMS *ResetParams
)
{
AGESA_STATUS AgesaStatus;
AGESA_STATUS CalledAgesaStatus;
WARM_RESET_REQUEST Request;
UINT8 PrevRequestBit;
UINT8 PrevStateBits;
AgesaStatus = AGESA_SUCCESS;
// Setup ROM execution cache
CalledAgesaStatus = AllocateExecutionCache (&ResetParams->StdHeader, &ResetParams->CacheRegion[0]);
if (CalledAgesaStatus > AgesaStatus) {
AgesaStatus = CalledAgesaStatus;
}
// IDS_EXTENDED_HOOK (IDS_INIT_RESET_BEFORE, NULL, NULL, &ResetParams->StdHeader);
// Init Debug Print function
IDS_HDT_CONSOLE_INIT (&ResetParams->StdHeader);
IDS_HDT_CONSOLE (MAIN_FLOW, "\nAmdInitReset: Start\n\n");
IDS_HDT_CONSOLE (MAIN_FLOW, "\n*** %s ***\n\n", (CHAR8 *)&UserOptions.VersionString);
AGESA_TESTPOINT (TpIfAmdInitResetEntry, &ResetParams->StdHeader);
ASSERT (ResetParams != NULL);
PrevRequestBit = FALSE;
PrevStateBits = WR_STATE_COLD;
if (IsBsp (&ResetParams->StdHeader, &AgesaStatus)) {
CalledAgesaStatus = BldoptFchFunction.InitReset (ResetParams);
AgesaStatus = (CalledAgesaStatus > AgesaStatus) ? CalledAgesaStatus : AgesaStatus;
}
// If a previously requested warm reset cannot be triggered in the
// current stage, store the previous state of request and reset the
// request struct to the current post stage
GetWarmResetFlag (&ResetParams->StdHeader, &Request);
if (Request.RequestBit == TRUE) {
if (Request.StateBits >= Request.PostStage) {
PrevRequestBit = Request.RequestBit;
PrevStateBits = Request.StateBits;
Request.RequestBit = FALSE;
Request.StateBits = Request.PostStage - 1;
SetWarmResetFlag (&ResetParams->StdHeader, &Request);
}
}
// Initialize the PCI MMIO access mechanism
InitializePciMmio (&ResetParams->StdHeader);
// Initialize Hyper Transport Registers
if (HtOptionInitReset.HtInitReset != NULL) {
IDS_HDT_CONSOLE (MAIN_FLOW, "HtInitReset: Start\n");
CalledAgesaStatus = HtOptionInitReset.HtInitReset (&ResetParams->StdHeader, &ResetParams->HtConfig);
IDS_HDT_CONSOLE (MAIN_FLOW, "HtInitReset: End\n");
if (CalledAgesaStatus > AgesaStatus) {
AgesaStatus = CalledAgesaStatus;
}
}
// Warm Reset, should be at the end of AmdInitReset
GetWarmResetFlag (&ResetParams->StdHeader, &Request);
// If a warm reset is requested in the current post stage, trigger the
// warm reset and ignore the previous request
if (Request.RequestBit == TRUE) {
if (Request.StateBits < Request.PostStage) {
AgesaDoReset (WARM_RESET_WHENEVER, &ResetParams->StdHeader);
}
} else {
// Otherwise, if there's a previous request, restore it
// so that the subsequent post stage can trigger the warm reset
if (PrevRequestBit == TRUE) {
Request.RequestBit = PrevRequestBit;
Request.StateBits = PrevStateBits;
SetWarmResetFlag (&ResetParams->StdHeader, &Request);
}
}
// Check for Cache As Ram Corruption
IDS_CAR_CORRUPTION_CHECK (&ResetParams->StdHeader);
IDS_HDT_CONSOLE (MAIN_FLOW, "\nAmdInitReset: End\n\n");
AGESA_TESTPOINT (TpIfAmdInitResetExit, &ResetParams->StdHeader);
return AgesaStatus;
}
