/*
- * PROJECT: ReactOS HAL
- * LICENSE: GPL - See COPYING in the top level directory
- * FILE: hal/halx86/generic/misc.c
- * PURPOSE: Miscellanous Routines
- * PROGRAMMERS: Alex Ionescu (alex.ionescu@reactos.org)
- * Eric Kohl (ekohl@abo.rhein-zeitung.de)
+ * PROJECT: ReactOS Hardware Abstraction Layer (HAL)
+ * LICENSE: BSD - See COPYING.ARM in the top level directory
+ * FILE: halx86/generic/misc.c
+ * PURPOSE: NMI, I/O Mapping and x86 Subs
+ * PROGRAMMERS: ReactOS Portable Systems Group
*/
-/* INCLUDES ******************************************************************/
+/* INCLUDES *******************************************************************/
#include <hal.h>
#define NDEBUG
#include <debug.h>
-/* PRIVATE FUNCTIONS *********************************************************/
+/* GLOBALS *******************************************************************/
+
+BOOLEAN HalpNMIInProgress;
+
+/* PRIVATE FUNCTIONS **********************************************************/
VOID
NTAPI
HalpCheckPowerButton(VOID)
{
- /* Nothing to do on non-ACPI */
+ //
+ // Nothing to do on non-ACPI
+ //
return;
}
HalpMapPhysicalMemory64(IN PHYSICAL_ADDRESS PhysicalAddress,
IN ULONG NumberPage)
{
- /* Use kernel memory manager I/O map facilities */
+ //
+ // Use kernel memory manager I/O map facilities
+ //
return MmMapIoSpace(PhysicalAddress,
NumberPage << PAGE_SHIFT,
MmNonCached);
HalpUnmapVirtualAddress(IN PVOID VirtualAddress,
IN ULONG NumberPages)
{
- /* Use kernel memory manager I/O map facilities */
+ //
+ // Use kernel memory manager I/O map facilities
+ //
MmUnmapIoSpace(VirtualAddress, NumberPages << PAGE_SHIFT);
}
+VOID
+NTAPI
+HalpFlushTLB(VOID)
+{
+ ULONG Flags, Cr4;
+ INT CpuInfo[4];
+ ULONG_PTR PageDirectory;
+
+ //
+ // Disable interrupts
+ //
+ Flags = __readeflags();
+ _disable();
+
+ //
+ // Get page table directory base
+ //
+ PageDirectory = __readcr3();
+
+ //
+ // Check for CPUID support
+ //
+ if (KeGetCurrentPrcb()->CpuID)
+ {
+ //
+ // Check for global bit in CPU features
+ //
+ __cpuid(CpuInfo, 1);
+ if (CpuInfo[3] & 0x2000)
+ {
+ //
+ // Get current CR4 value
+ //
+ Cr4 = __readcr4();
+
+ //
+ // Disable global pit
+ //
+ __writecr4(Cr4 & ~CR4_PGE);
+
+ //
+ // Flush TLB and re-enable global bit
+ //
+ __writecr3(PageDirectory);
+ __writecr4(Cr4);
+
+ //
+ // Restore interrupts
+ //
+ __writeeflags(Flags);
+ }
+ }
+
+ //
+ // Legacy: just flush TLB
+ //
+ __writecr3(PageDirectory);
+ __writeeflags(Flags);
+}
+
VOID
NTAPI
HalpSetInterruptGate(ULONG index, PVOID address)
NTAPI
HalHandleNMI(IN PVOID NmiInfo)
{
- UCHAR ucStatus;
+ UCHAR NmiStatus;
- /* Get the NMI Flag */
- ucStatus = READ_PORT_UCHAR((PUCHAR)0x61);
+ //
+ // Don't recurse
+ //
+ if (HalpNMIInProgress++) while (TRUE);
- /* Display NMI failure string */
- HalDisplayString ("\n*** Hardware Malfunction\n\n");
- HalDisplayString ("Call your hardware vendor for support\n\n");
+ //
+ // Get the NMI Flag
+ //
+ NmiStatus = READ_PORT_UCHAR((PUCHAR)0x61);
- /* Check for parity error */
- if (ucStatus & 0x80)
+ //
+ // Switch to boot vieo
+ //
+ if (InbvIsBootDriverInstalled())
{
- /* Display message */
- HalDisplayString ("NMI: Parity Check / Memory Parity Error\n");
+ //
+ // Acquire ownership
+ //
+ InbvAcquireDisplayOwnership();
+ InbvResetDisplay();
+
+ //
+ // Fill the screen
+ //
+ InbvSolidColorFill(0, 0, 639, 479, 1);
+ InbvSetScrollRegion(0, 0, 639, 479);
+
+ //
+ // Enable text
+ //
+ InbvSetTextColor(15);
+ InbvInstallDisplayStringFilter(NULL);
+ InbvEnableDisplayString(TRUE);
}
- /* Check for I/O failure */
- if (ucStatus & 0x40)
+ //
+ // Display NMI failure string
+ //
+ HalDisplayString("\n*** Hardware Malfunction\n\n");
+ HalDisplayString("Call your hardware vendor for support\n\n");
+
+ //
+ // Check for parity error
+ //
+ if (NmiStatus & 0x80)
{
- /* Display message */
- HalDisplayString ("NMI: Channel Check / IOCHK\n");
+ //
+ // Display message
+ //
+ HalDisplayString("NMI: Parity Check / Memory Parity Error\n");
}
- /* Halt the system */
+ //
+ // Check for I/O failure
+ //
+ if (NmiStatus & 0x40)
+ {
+ //
+ // Display message
+ //
+ HalDisplayString("NMI: Channel Check / IOCHK\n");
+ }
+
+ //
+ // Check for EISA systems
+ //
+ if (HalpBusType == MACHINE_TYPE_EISA)
+ {
+ //
+ // FIXME: Not supported
+ //
+ UNIMPLEMENTED;
+ }
+
+ //
+ // Halt the system
+ //
HalDisplayString("\n*** The system has halted ***\n");
- //KeEnterKernelDebugger();
+
+ //
+ // Enter the debugger if possible
+ //
+ //if (!KdDebuggerNotPresent && KdDebuggerEnabled) KeEnterKernelDebugger();
+
+ //
+ // Freeze the system
+ //
+ while (TRUE);
}
/*
OUT PKINTERRUPT_ROUTINE **FlatDispatch,
OUT PKINTERRUPT_ROUTINE *NoConnection)
{
- /* Not implemented on x86 */
+ //
+ // Not implemented on x86
+ //
return 0;
}
NTAPI
KeFlushWriteBuffer(VOID)
{
- /* Not implemented on x86 */
+ //
+ // Not implemented on x86
+ //
return;
}