DirectReset.c

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#include <Base.h>
 
#include <Library/BaseLib.h>
#include <Library/DebugLib.h>
#include <Library/IoLib.h>
#include <Library/OcDirectResetLib.h>
 
VOID
DirectResetCold (
  VOID
  )
{
  volatile UINTN  Index;
 
  IoWrite8 (0xCF9, BIT2 | BIT1); // 1st choice: PIIX3 RCR, RCPU|SRST
 
  for (Index = 0; Index < 100; ++Index) {
  }
 
  IoWrite8 (0x64, 0xfe);         // 2nd choice: keyboard controller
  CpuDeadLoop ();
}