arch/.unmaintained/ppc-native/boot/bootstrap.h

   1 /*
   2 ** linux/arch/m68k/boot/amiga/bootstrap.h -- This file is part of the Amiga
   3 **                                           bootloader.
   4 **
   5 ** Copyright 1993, 1994 by Hamish Macdonald
   6 **
   7 ** Some minor additions by Michael Rausch 1-11-94
   8 ** Modified 11-May-94 by Geert Uytterhoeven
   9 **                      (Geert.Uytterhoeven@cs.kuleuven.ac.be)
  10 **     - inline Supervisor() call
  11 ** Modified 10-Jan-96 by Geert Uytterhoeven
  12 **     - The real Linux/m68k boot code moved to linuxboot.[ch]
  13 ** Modified 9-Sep-96 by Geert Uytterhoeven
  14 **     - const library bases
  15 **     - fixed register naming for m68k-cbm-amigados-gcc
  16 **
  17 ** This file is subject to the terms and conditions of the GNU General Public
  18 ** License.  See the file COPYING in the main directory of this archive
  19 ** for more details.
  20 **
  21 */
  22
  23
  24 struct MsgPort {
  25     u_char fill1[15];
  26     u_char mp_SigBit;
  27     u_char fill2[18];
  28 };
  29
  30 struct IOStdReq {
  31     u_char fill1[20];
  32     struct Device *io_Device;
  33     u_char fill2[4];
  34     u_short io_Command;
  35     u_char io_Flags;
  36     char io_Error;
  37     u_long io_Actual;
  38     u_long io_Length;
  39     void *io_Data;
  40     u_char fill4[4];
  41 };
  42
  43 #define IOF_QUICK       (1<<0)
  44
  45 struct timerequest {
  46     u_char fill1[28];
  47     u_short io_Command;
  48     u_char io_Flags;
  49     u_char fill2[1];
  50     u_long tv_secs;
  51     u_long tv_micro;
  52 };
  53
  54 #define UNIT_VBLANK     1
  55 #define TR_ADDREQUEST   9
  56
  57
  58 struct Library;
  59 struct IORequest;
  60
  61
  62 static __inline char OpenDevice(u_char *devName, u_long unit,
  63                                 struct IORequest *ioRequest, u_long flags)
  64 {
  65     register char _res __asm("d0");
  66     register const struct ExecBase *a6 __asm("a6") = SysBase;
  67     register u_char *a0 __asm("a0") = devName;
  68     register u_long d0 __asm("d0") = unit;
  69     register struct IORequest *a1 __asm("a1") = ioRequest;
  70     register u_long d1 __asm("d1") = flags;
  71
  72     __asm __volatile ("jsr a6@(-0x1bc)"
  73                       : "=r" (_res)
  74                       : "r" (a6), "r" (a0), "r" (a1), "r" (d0), "r" (d1)
  75                       : "a0","a1","d0","d1", "memory");
  76     return(_res);
  77 }
  78
  79 static __inline void CloseDevice(struct IORequest *ioRequest)
  80 {
  81     register const struct ExecBase *a6 __asm("a6") = SysBase;
  82     register struct IORequest *a1 __asm("a1") = ioRequest;
  83
  84     __asm __volatile ("jsr a6@(-0x1c2)"
  85                       : /* no output */
  86                       : "r" (a6), "r" (a1)
  87                       : "a0","a1","d0","d1", "memory");
  88 }
  89
  90 static __inline char DoIO(struct IORequest *ioRequest)
  91 {
  92     register char _res __asm("d0");
  93     register const struct ExecBase *a6 __asm("a6") = SysBase;
  94     register struct IORequest *a1 __asm("a1") = ioRequest;
  95
  96     __asm __volatile ("jsr a6@(-0x1c8)"
  97                       : "=r" (_res)
  98                       : "r" (a6), "r" (a1)
  99                       : "a0","a1","d0","d1", "memory");
 100     return(_res);
 101 }
 102
 103 static __inline void *CreateIORequest(struct MsgPort *port, u_long size)
 104 {
 105     register struct Library *_res __asm("d0");
 106     register const struct ExecBase *a6 __asm("a6") = SysBase;
 107     register struct MsgPort *a0 __asm("a0") = port;
 108     register u_long d0 __asm("d0") = size;
 109
 110     __asm __volatile ("jsr a6@(-0x28e)"
 111                       : "=r" (_res)
 112                       : "r" (a6), "r" (a0), "r" (d0)
 113                       : "a0","a1","d0","d1", "memory");
 114     return(_res);
 115 }
 116
 117 static __inline void DeleteIORequest(void *ioRequest)
 118 {
 119     register const struct ExecBase *a6 __asm("a6") = SysBase;
 120     register void *a0 __asm("a0") = ioRequest;
 121
 122     __asm __volatile ("jsr a6@(-0x294)"
 123                       : /* no output */
 124                       : "r" (a6), "r" (a0)
 125                       : "a0","a1","d0","d1", "memory");
 126 }
 127
 128 static __inline struct MsgPort *CreateMsgPort(void)
 129 {
 130     register struct MsgPort *_res __asm("d0");
 131     register const struct ExecBase *a6 __asm("a6") = SysBase;
 132
 133     __asm __volatile ("jsr a6@(-0x29a)"
 134                       : "=r" (_res)
 135                       : "r" (a6)
 136                       : "a0","a1","d0","d1", "memory");
 137     return(_res);
 138 }
 139
 140 static __inline void DeleteMsgPort(struct MsgPort *port)
 141 {
 142     register const struct ExecBase *a6 __asm("a6") = SysBase;
 143     register struct MsgPort *a0 __asm("a0") = port;
 144
 145     __asm __volatile ("jsr a6@(-0x2a0)"
 146                       : /* no output */
 147                       : "r" (a6), "r" (a0)
 148                       : "a0","a1","d0","d1", "memory");
 149 }
 150