reboot.c File Reference

#include <hal.h>

Include dependency graph for reboot.c:

Go to the source code of this file.

Functions
static DECLSPEC_NORETURN VOID	HalpFreezeSystem (VOID)
DECLSPEC_NORETURN VOID	HalpReboot (VOID)
VOID NTAPI	HalReturnToFirmware (_In_ FIRMWARE_REENTRY Action)

Function Documentation

HalpFreezeSystem()

static DECLSPEC_NORETURN VOID HalpFreezeSystem ( VOID  )

static

Definition at line 17 of file reboot.c.

{
    /* Disable interrupts and halt the CPU */
    _disable();
    __halt();
    UNREACHABLE;
}

Referenced by HalReturnToFirmware().

HalpReboot()

DECLSPEC_NORETURN VOID HalpReboot

(

VOID

)

Definition at line 28 of file reboot.c.

{
    /* Disable interrupts */
    _disable();
 
    /* Flush write buffers */
    KeFlushWriteBuffer();
 
    /* Send the reset command */
    WRITE_PORT_UCHAR((PUCHAR)PPI_IO_o_CONTROL, PPI_SHUTDOWN_0_ENABLE);
    WRITE_PORT_UCHAR((PUCHAR)PPI_IO_o_CONTROL, PPI_SHUTDOWN_1_ENABLE);
    WRITE_PORT_UCHAR((PUCHAR)CPU_IO_o_RESET, 0);
 
    /* Halt the CPU */
    __halt();
    UNREACHABLE;
}

HalReturnToFirmware()

VOID NTAPI HalReturnToFirmware

(

_In_ FIRMWARE_REENTRY

Action

)

Definition at line 51 of file reboot.c.

{
    switch (Action)
    {
        /* All recognized actions */
        case HalHaltRoutine:
        case HalPowerDownRoutine:
            HalpFreezeSystem();
 
        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();
        }
    }
}