Common.c

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#include "Common.h"
 
BOOLEAN
SbiImplementsDbcn (
  VOID
  )
{
  SBI_RET  Ret;
 
  Ret = SbiCall (SBI_EXT_BASE, SBI_EXT_BASE_PROBE_EXT, 1, SBI_EXT_DBCN);
  if ((TranslateError (Ret.Error) == EFI_SUCCESS) &&
      (Ret.Value != 0))
  {
    return TRUE;
  }
 
  return FALSE;
}
 
BOOLEAN
SbiImplementsLegacyPutchar (
  VOID
  )
{
  SBI_RET  Ret;
 
  Ret = SbiCall (SBI_EXT_BASE, SBI_EXT_BASE_PROBE_EXT, 1, SBI_EXT_0_1_CONSOLE_PUTCHAR);
  if ((TranslateError (Ret.Error) == EFI_SUCCESS) &&
      (Ret.Value != 0))
  {
    return TRUE;
  }
 
  return FALSE;
}
 
UINTN
SbiLegacyPutchar (
  IN  UINT8  *Buffer,
  IN  UINTN  NumberOfBytes
  )
{
  SBI_RET  Ret;
  UINTN    Index;
 
  for (Index = 0; Index < NumberOfBytes; Index++) {
    Ret =  SbiCall (SBI_EXT_0_1_CONSOLE_PUTCHAR, 0, 1, Buffer[Index]);
    if ((INT64)Ret.Error < 0) {
      break;
    }
  }
 
  return Index;
}
 
UINTN
SbiDbcnWrite (
  IN  UINT8  *Buffer,
  IN  UINTN  NumberOfBytes
  )
{
  SBI_RET  Ret;
 
  Ret = SbiCall (
          SBI_EXT_DBCN,
          SBI_EXT_DBCN_WRITE,
          3,
          NumberOfBytes,
          ((UINTN)Buffer),
          0
          );
 
  /*
   * May do partial writes. Don't bother decoding
   * Ret.Error as we're only interested in number of
   * bytes written to console.
   */
  return Ret.Value;
}