reactos/hal/halx86/generic/nmi.c

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/*
* PROJECT: ReactOS Hardware Abstraction Layer
* LICENSE: BSD - See COPYING.ARM in the top level directory
* PURPOSE: NMI handling
* PROGRAMMERS: ReactOS Portable Systems Group
*/
/* INCLUDES *******************************************************************/
#include <hal.h>
#include <drivers/bootvid/display.h>
#define NDEBUG
#include <debug.h>
/* GLOBALS *******************************************************************/
BOOLEAN HalpNMIInProgress;
/* FUNCTIONS *****************************************************************/
/*
* @implemented
*/
VOID
NTAPI
HalHandleNMI(
IN PVOID NmiInfo)
{
UNREFERENCED_PARAMETER(NmiInfo);
#ifndef _MINIHAL_
SYSTEM_CONTROL_PORT_B_REGISTER SystemControl;
/* Don't recurse */
if (HalpNMIInProgress++)
ERROR_DBGBREAK();
/* Get NMI reason from hardware */
#if defined(SARCH_PC98)
SystemControl.Bits = __inbyte(PPI_IO_i_PORT_B);
#else
SystemControl.Bits = __inbyte(SYSTEM_CONTROL_PORT_B);
#endif
/* Switch to boot video */
if (InbvIsBootDriverInstalled())
{
/* Acquire ownership */
InbvAcquireDisplayOwnership();
InbvResetDisplay();
/* Fill the screen */
InbvSolidColorFill(0, 0, SCREEN_WIDTH - 1, SCREEN_HEIGHT - 1, BV_COLOR_RED);
InbvSetScrollRegion(0, 0, SCREEN_WIDTH - 1, SCREEN_HEIGHT - 1);
/* Enable text */
InbvSetTextColor(BV_COLOR_WHITE);
InbvInstallDisplayStringFilter(NULL);
InbvEnableDisplayString(TRUE);
}
/* Display NMI failure string */
InbvDisplayString("\r\n*** Hardware Malfunction\r\n\r\n");
InbvDisplayString("Call your hardware vendor for support\r\n\r\n");
#if defined(SARCH_PC98)
/* Check for parity error */
if (SystemControl.MemoryParityCheck)
{
InbvDisplayString("NMI: Parity Check / Memory Parity Error\r\n");
}
if (SystemControl.ExtendedMemoryParityCheck)
{
InbvDisplayString("NMI: Parity Check / Extended Memory Parity Error\r\n");
}
#else
/* Check for parity error */
if (SystemControl.ParityCheck)
{
InbvDisplayString("NMI: Parity Check / Memory Parity Error\r\n");
}
/* Check for I/O failure */
if (SystemControl.ChannelCheck)
{
InbvDisplayString("NMI: Channel Check / IOCHK\r\n");
}
#endif
/* Check for EISA systems */
if (HalpBusType == MACHINE_TYPE_EISA)
{
/* FIXME: Not supported */
UNIMPLEMENTED;
}
/* Halt the system */
InbvDisplayString("\r\n*** The system has halted ***\r\n");
/* Enter the debugger if possible */
KiBugCheckData[0] = (ULONG_PTR)KeServiceDescriptorTable; /* NMI Corruption? */
if (!KdDebuggerNotPresent && KdDebuggerEnabled)
KeEnterKernelDebugger();
#endif /* !_MINIHAL_ */
/* Freeze the system */
while (TRUE)
NOTHING;
}