105 lines
1.8 KiB
C
105 lines
1.8 KiB
C
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/*++
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Copyright (c) 1991 Microsoft Corporation
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Module Name:
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ixreboot.c
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Abstract:
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Provides the interface to the firmware for x86. Since there is no
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firmware to speak of on x86, this is just reboot support.
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Author:
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John Vert (jvert) 12-Aug-1991
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Revision History:
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--*/
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#include "halp.h"
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//
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// Defines to let us diddle the CMOS clock and the keyboard
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//
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#define CMOS_CTRL (PUCHAR )0x70
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#define CMOS_DATA (PUCHAR )0x71
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#define RESET 0xfe
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#define KEYBPORT (PUCHAR )0x64
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//
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// Private function prototypes
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//
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VOID
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HalpReboot (
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VOID
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);
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VOID
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HalpReboot (
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VOID
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)
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/*++
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Routine Description:
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This procedure resets the CMOS clock to the standard timer settings
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so the bios will work, and then issues a reset command to the keyboard
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to cause a warm boot.
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It is very machine dependent, this implementation is intended for
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PC-AT like machines.
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This code copied from the "old debugger" sources.
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N.B.
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Will NOT return.
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--*/
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{
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UCHAR Scratch;
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PUSHORT Magic;
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EFI_STATUS status;
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//
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// Disable IA64 Errror Handling
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//
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HalpMCADisable();
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//
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// Instead of the previous code we will use Efi's reset proc (RESET_TYPE = cold boot).
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//
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status = HalpCallEfi (
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EFI_RESET_SYSTEM_INDEX,
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(ULONGLONG)EfiResetCold,
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EFI_SUCCESS,
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0,
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0,
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0,
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0,
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0,
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0
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);
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HalDebugPrint(( HAL_INFO, "HAL: HalpReboot - returned from HalpCallEfi: %I64X\n", status ));
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//
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// If we return, send the reset command to the keyboard controller
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//
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WRITE_PORT_UCHAR(KEYBPORT, RESET);
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}
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