mirror of
https://github.com/reactos/reactos.git
synced 2024-07-01 10:20:03 +00:00
111 lines
2.7 KiB
C
111 lines
2.7 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>
|
|
|
|
/* PRIVATE FUNCTIONS *********************************************************/
|
|
|
|
static VOID
|
|
HalpWriteResetCommand(VOID)
|
|
{
|
|
/* Generate RESET signal via keyboard controller */
|
|
WRITE_PORT_UCHAR((PUCHAR)0x64, 0xFE);
|
|
};
|
|
|
|
DECLSPEC_NORETURN
|
|
VOID
|
|
HalpReboot(VOID)
|
|
{
|
|
PHYSICAL_ADDRESS PhysicalAddress;
|
|
UCHAR Data;
|
|
PVOID ZeroPageMapping;
|
|
|
|
/* Map the first physical page */
|
|
PhysicalAddress.QuadPart = 0;
|
|
ZeroPageMapping = HalpMapPhysicalMemory64(PhysicalAddress, 1);
|
|
|
|
/* 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();
|
|
UNREACHABLE;
|
|
}
|
|
|
|
/* PUBLIC FUNCTIONS **********************************************************/
|
|
|
|
#ifndef _MINIHAL_
|
|
/*
|
|
* @implemented
|
|
*/
|
|
VOID
|
|
NTAPI
|
|
HalReturnToFirmware(
|
|
_In_ FIRMWARE_REENTRY Action)
|
|
{
|
|
/* Check what kind of action this is */
|
|
switch (Action)
|
|
{
|
|
/* All recognized actions */
|
|
case HalHaltRoutine:
|
|
case HalPowerDownRoutine:
|
|
case HalRestartRoutine:
|
|
case HalRebootRoutine:
|
|
{
|
|
/* Acquire the display */
|
|
InbvAcquireDisplayOwnership();
|
|
|
|
/* Call the internal reboot function */
|
|
HalpReboot();
|
|
}
|
|
|
|
/* Anything else */
|
|
default:
|
|
{
|
|
/* Print message and break */
|
|
DbgPrint("HalReturnToFirmware called!\n");
|
|
DbgBreakPoint();
|
|
}
|
|
}
|
|
}
|
|
#endif // _MINIHAL_
|
|
|
|
/* EOF */
|