/*++
Copyright (c) 1993 Digital Equipment Corporation
Module Name:
fwhalt.c
Abstract:
This module implements routines to process halts from the operating
system.
Author:
Joe Notarangelo 24-Feb-1993
Environment:
Firmware in Kernel mode only.
Revision History:
--*/
#include "fwp.h"
#include "fwpexcpt.h"
#include "axp21064.h"
#include "fwstring.h"
//
// Maximum size of Machine Check output string.
//
#define MAX_ERROR_STRING 100
//
// Function prototypes
//
VOID
FwDisplayMchk(
IN PLOGOUT_FRAME_21064 LogoutFrame,
IN ULONG HaltReason
);
VOID
FwHaltToMonitor(
IN PALPHA_RESTART_SAVE_AREA AlphaSaveArea,
IN ULONG Reason
);
VOID
FwHalt(
VOID
)
/*++
Routine Description:
This function receives control on a halt from the operating
system.
Arguments:
None.
Return Value:
None.
--*/
{
PRESTART_BLOCK RestartBlock;
PALPHA_RESTART_SAVE_AREA AlphaSaveArea;
ALPHA_VIDEO_TYPE VideoType;
UCHAR Character;
ULONG Count;
//
// N.B. we will continue running on the stack re-established by
// the operating system for us.
//
//
// Reset the video state. If video init fails, continue as we may
// be directing output to the serial port.
//
DisplayBootInitialize(&VideoType);
//
// Verify the restart block.
//
if (FwVerifyRestartBlock() == FALSE) {
FwPrint (FW_INVALID_RESTART_BLOCK_MSG); // temp message
FwStallExecution(2 * 1000 * 1000);
//FwRestart(); // this will be real one day
}
//
// Dispatch on the halt reason code in the restart block.
//
// AlphaSaveArea = (PALPHA_RESTART_SAVE_AREA)
// &SYSTEM_BLOCK->RestartBlock->SaveArea;
AlphaSaveArea = (PALPHA_RESTART_SAVE_AREA)
&SYSTEM_BLOCK->RestartBlock->u.SaveArea;
switch (AlphaSaveArea->HaltReason) {
case AXP_HALT_REASON_HALT:
//
// Dispatch to monitor so that Joe can find his bug.
//
FwHaltToMonitor(AlphaSaveArea, FW_EXC_HALT);
//
// If we return then it is time to restart to get a real stack.
//
FwRestart();
case AXP_HALT_REASON_DBLMCHK:
case AXP_HALT_REASON_PALMCHK:
//
// Machine Check.
//
FwDisplayMchk(AlphaSaveArea->LogoutFrame, AlphaSaveArea->HaltReason);
//
// Find out what the user wants to do next. We will give her
// 2 choices: 1. enter monitor 2. restart
//
FwPrint(FW_SYSRQ_MONITOR_MSG);
FwRead(ARC_CONSOLE_INPUT, &Character, 1, &Count);
if (Character == ASCII_SYSRQ) {
FwHaltToMonitor(AlphaSaveArea, FW_EXC_MCHK);
}
//
// Restart the firmware when we return.
//
FwRestart();
case AXP_HALT_REASON_REBOOT:
FwReboot();
case AXP_HALT_REASON_RESTART:
default:
FwRestart();
}
}
VOID
FwDisplayMchk(
IN PLOGOUT_FRAME_21064 LogoutFrame,
IN ULONG HaltReason
)
/*++
Routine Description:
This function displays the logout frame for a 21064.
Arguments:
LogoutFrame - Supplies a pointer to the logout frame.
HaltReason - Supplies the reason for the halt.
Return Value:
None.
--*/
{
UCHAR OutBuffer[ MAX_ERROR_STRING ];
//
// PRINT_LOGOUT_VERBOSE controls the amount of text displayed
// of the logout frame. The macro can be undefined to save code and
// initialized data space in the rom. If the space exists it would be
// preferable to give the entire print out.
//
#define PRINT_LOGOUT_VERBOSE 1
switch (HaltReason) {
case AXP_HALT_REASON_DBLMCHK:
FwPrint(FW_FATAL_DMC_MSG);
break;
case AXP_HALT_REASON_PALMCHK:
FwPrint(FW_FATAL_MCINPALMODE_MSG);
break;
default:
FwPrint(FW_FATAL_UNKNOWN_MSG);
}
#ifdef PRINT_LOGOUT_VERBOSE
FwPrint("BIU_STAT : %16Lx BIU_ADDR: %16Lx\r\n",
BIUSTAT_ALL_21064(LogoutFrame->BiuStat),
LogoutFrame->BiuAddr.QuadPart);
FwPrint("FILL_ADDR: %16Lx FILL_SYN: %16Lx\r\n",
LogoutFrame->FillAddr.QuadPart,
FILLSYNDROME_ALL_21064(LogoutFrame->FillSyndrome) );
FwPrint("DC_STAT : %16Lx BC_TAG : %16Lx\r\n",
DCSTAT_ALL_21064(LogoutFrame->DcStat),
BCTAG_ALL_21064(LogoutFrame->BcTag) );
FwPrint("ICCSR : %16Lx ABOX_CTL: %16Lx EXC_SUM: %16Lx\r\n",
ICCSR_ALL_21064(LogoutFrame->Iccsr),
ABOXCTL_ALL_21064(LogoutFrame->AboxCtl),
EXCSUM_ALL_21064(LogoutFrame->ExcSum) );
FwPrint("EXC_ADDR : %16Lx VA : %16Lx MM_CSR : %16Lx\r\n",
LogoutFrame->ExcAddr.QuadPart,
LogoutFrame->Va.QuadPart,
MMCSR_ALL_21064(LogoutFrame->MmCsr) );
FwPrint("HIRR : %16Lx HIER : %16Lx PS : %16Lx\r\n",
IRR_ALL_21064(LogoutFrame->Hirr),
IER_ALL_21064(LogoutFrame->Hier),
PS_ALL_21064(LogoutFrame->Ps) );
FwPrint("PAL_BASE: %16Lx\r\n",
LogoutFrame->PalBase.QuadPart);
#endif //PRINT_LOGOUT_VERBOSE
//
// Print out interpretation of the error.
//
//
// Check for tag control parity error.
//
if (BIUSTAT_TCPERR_21064(LogoutFrame->BiuStat) == 1) {
FwPrint(FW_FATAL_TAGCNTRL_PE_MSG,
BCTAG_TAGCTLP_21064(LogoutFrame->BcTag),
BCTAG_TAGCTLD_21064(LogoutFrame->BcTag),
BCTAG_TAGCTLS_21064(LogoutFrame->BcTag),
BCTAG_TAGCTLV_21064(LogoutFrame->BcTag) );
}
//
// Check for tag parity error.
//
if (BIUSTAT_TPERR_21064(LogoutFrame->BiuStat) == 1) {
FwPrint(FW_FATAL_TAG_PE_MSG,
BCTAG_TAG_21064(LogoutFrame->BcTag),
BCTAG_TAG_21064(LogoutFrame->BcTag) );
}
//
// Check for hard error.
//
if (BIUSTAT_HERR_21064(LogoutFrame->BiuStat) == 1) {
FwPrint(FW_FATAL_HEACK_MSG,
BIUSTAT_CMD_21064(LogoutFrame->BiuStat),
LogoutFrame->BiuAddr.QuadPart);
}
//
// Check for soft error.
//
if( BIUSTAT_SERR_21064(LogoutFrame->BiuStat) == 1 ){
FwPrint(FW_FATAL_SEACK_MSG,
BIUSTAT_CMD_21064(LogoutFrame->BiuStat),
LogoutFrame->BiuAddr.QuadPart);
}
//
// Check for fill ECC errors.
//
if( BIUSTAT_FILLECC_21064(LogoutFrame->BiuStat) == 1 ){
FwPrint(FW_FATAL_ECC_ERROR_MSG,
(BIUSTAT_FILLIRD_21064(LogoutFrame->BiuStat) ?
"Icache Fill" : "Dcache Fill") );
FwPrint(FW_FATAL_QWLWLW_MSG,
LogoutFrame->FillAddr.QuadPart,
BIUSTAT_FILLQW_21064(LogoutFrame->BiuStat),
FILLSYNDROME_LO_21064(LogoutFrame->FillSyndrome),
FILLSYNDROME_HI_21064(LogoutFrame->FillSyndrome) );
}
//
// Check for fill Parity errors.
//
if( BIUSTAT_FILLDPERR_21064(LogoutFrame->BiuStat) == 1 ){
FwPrint(FW_FATAL_PE_MSG,
(BIUSTAT_FILLIRD_21064(LogoutFrame->BiuStat) ?
"Icache Fill" : "Dcache Fill") );
FwPrint(FW_FATAL_QWLWLW_MSG,
LogoutFrame->FillAddr.QuadPart,
BIUSTAT_FILLQW_21064(LogoutFrame->BiuStat),
FILLSYNDROME_LO_21064(LogoutFrame->FillSyndrome),
FILLSYNDROME_HI_21064(LogoutFrame->FillSyndrome) );
}
//
// Check for multiple hard errors.
//
if (BIUSTAT_FATAL1_21064(LogoutFrame->BiuStat) == 1) {
FwPrint(FW_FATAL_MULTIPLE_EXT_TAG_ERRORS_MSG);
}
//
// Check for multiple fill errors.
//
if (BIUSTAT_FATAL2_21064(LogoutFrame->BiuStat) == 1) {
FwPrint(FW_FATAL_MULTIPLE_FILL_ERRORS_MSG);
}
//
// return to caller
//
return;
}
VOID
FwHaltToMonitor(
IN PALPHA_RESTART_SAVE_AREA AlphaSaveArea,
IN ULONG Reason
)
/*++
Routine Description:
This function transfers control to the firmware Monitor.
Arguments:
AlphaSaveArea - Supplies a pointer to the Alpha save area portion
of the restart block.
Reason - The reason for going to the monitor.
Return Value:
None.
--*/
{
PFW_EXCEPTION_FRAME ExceptionFrame;
//
// Allocate the exception frame.
//
ExceptionFrame = FwAllocatePool(sizeof(FW_EXCEPTION_FRAME));
//
// Copy the integer registers to the exception frame.
//
RtlMoveMemory(&ExceptionFrame->ExceptionV0, &AlphaSaveArea->IntV0,
32 * 8);
//
// Copy the floating point registers to the exception frame.
//
RtlMoveMemory(&ExceptionFrame->ExceptionF0, &AlphaSaveArea->FltF0,
32 * 8);
//
// Copy miscellaneous registers.
//
ExceptionFrame->ExceptionFaultingInstructionAddress =
(LONG)(AlphaSaveArea->ReiRestartAddress - 4);
ExceptionFrame->ExceptionProcessorStatus = AlphaSaveArea->Psr;
ExceptionFrame->ExceptionType = Reason;
ExceptionFrame->ExceptionParameter1 = (LONG)AlphaSaveArea;
//
// Dispatch to the monitor.
//
Monitor( 0, ExceptionFrame );
return;
}
