mirror of
https://github.com/reactos/reactos.git
synced 2024-11-18 21:13:52 +00:00
118 lines
2.9 KiB
C
118 lines
2.9 KiB
C
/*
|
|
* PROJECT: ReactOS HAL
|
|
* LICENSE: GPL - See COPYING in the top level directory
|
|
* FILE: hal/halx86/generic/reboot.c
|
|
* PURPOSE: Reboot functions
|
|
* PROGRAMMERS: Alex Ionescu (alex.ionescu@reactos.org)
|
|
* Eric Kohl
|
|
*/
|
|
|
|
/* INCLUDES ******************************************************************/
|
|
|
|
#include <hal.h>
|
|
#define NDEBUG
|
|
#include <debug.h>
|
|
|
|
#define GetPteAddress(x) (PHARDWARE_PTE)(((((ULONG_PTR)(x)) >> 12) << 2) + 0xC0000000)
|
|
|
|
/* PRIVATE FUNCTIONS *********************************************************/
|
|
|
|
VOID
|
|
NTAPI
|
|
HalpWriteResetCommand(VOID)
|
|
{
|
|
/* Generate RESET signal via keyboard controller */
|
|
WRITE_PORT_UCHAR((PUCHAR)0x64, 0xFE);
|
|
};
|
|
|
|
VOID
|
|
NTAPI
|
|
HalpReboot(VOID)
|
|
{
|
|
UCHAR Data;
|
|
PVOID ZeroPageMapping;
|
|
PHARDWARE_PTE Pte;
|
|
|
|
/* Get a PTE in the HAL reserved region */
|
|
ZeroPageMapping = (PVOID)(0xFFC00000 + PAGE_SIZE);
|
|
Pte = GetPteAddress(ZeroPageMapping);
|
|
|
|
/* Make it valid and map it to the first physical page */
|
|
Pte->Valid = 1;
|
|
Pte->Write = 1;
|
|
Pte->Owner = 1;
|
|
Pte->PageFrameNumber = 0;
|
|
|
|
/* Flush the TLB by resetting CR3 */
|
|
__writecr3(__readcr3());
|
|
|
|
/* Enable warm reboot */
|
|
((PUSHORT)ZeroPageMapping)[0x239] = 0x1234;
|
|
|
|
/* Lock CMOS Access (and disable interrupts) */
|
|
HalpAcquireCmosSpinLock();
|
|
|
|
/* Setup control register B */
|
|
WRITE_PORT_UCHAR((PUCHAR)0x70, 0x0B);
|
|
KeStallExecutionProcessor(1);
|
|
|
|
/* Read periodic register and clear the interrupt enable */
|
|
Data = READ_PORT_UCHAR((PUCHAR)0x71);
|
|
WRITE_PORT_UCHAR((PUCHAR)0x71, Data & ~0x40);
|
|
KeStallExecutionProcessor(1);
|
|
|
|
/* Setup control register A */
|
|
WRITE_PORT_UCHAR((PUCHAR)0x70, 0x0A);
|
|
KeStallExecutionProcessor(1);
|
|
|
|
/* Read divider rate and reset it */
|
|
Data = READ_PORT_UCHAR((PUCHAR)0x71);
|
|
WRITE_PORT_UCHAR((PUCHAR)0x71, (Data & ~0x9) | 0x06);
|
|
KeStallExecutionProcessor(1);
|
|
|
|
/* Reset neutral CMOS address */
|
|
WRITE_PORT_UCHAR((PUCHAR)0x70, 0x15);
|
|
KeStallExecutionProcessor(1);
|
|
|
|
/* Flush write buffers and send the reset command */
|
|
KeFlushWriteBuffer();
|
|
HalpWriteResetCommand();
|
|
|
|
/* Halt the CPU */
|
|
__halt();
|
|
}
|
|
|
|
/* PUBLIC FUNCTIONS **********************************************************/
|
|
|
|
/*
|
|
* @implemented
|
|
*/
|
|
VOID
|
|
NTAPI
|
|
HalReturnToFirmware(IN FIRMWARE_REENTRY Action)
|
|
{
|
|
/* Check what kind of action this is */
|
|
switch (Action)
|
|
{
|
|
/* All recognized actions */
|
|
case HalHaltRoutine:
|
|
case HalRebootRoutine:
|
|
|
|
#ifndef _MINIHAL_
|
|
/* Acquire the display */
|
|
InbvAcquireDisplayOwnership();
|
|
#endif
|
|
|
|
/* Call the internal reboot function */
|
|
HalpReboot();
|
|
|
|
/* Anything else */
|
|
default:
|
|
|
|
/* Print message and break */
|
|
DbgPrint("HalReturnToFirmware called!\n");
|
|
DbgBreakPoint();
|
|
}
|
|
}
|
|
|
|
/* EOF */
|