arch/m68k/include/asm/bootstd.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /* bootstd.h:  Bootloader system call interface
   3  *
   4  * (c) 1999, Rt-Control, Inc.
   5  */
   6
   7 #ifndef __BOOTSTD_H__
   8 #define __BOOTSTD_H__
   9
  10 #define NR_BSC 21            /* last used bootloader system call */
  11
  12 #define __BN_reset        0  /* reset and start the bootloader */
  13 #define __BN_test         1  /* tests the system call interface */
  14 #define __BN_exec         2  /* executes a bootloader image */
  15 #define __BN_exit         3  /* terminates a bootloader image */
  16 #define __BN_program      4  /* program FLASH from a chain */
  17 #define __BN_erase        5  /* erase sector(s) of FLASH */
  18 #define __BN_open         6
  19 #define __BN_write        7
  20 #define __BN_read         8
  21 #define __BN_close        9
  22 #define __BN_mmap         10 /* map a file descriptor into memory */
  23 #define __BN_munmap       11 /* remove a file to memory mapping */
  24 #define __BN_gethwaddr    12 /* get the hardware address of my interfaces */
  25 #define __BN_getserialnum 13 /* get the serial number of this board */
  26 #define __BN_getbenv      14 /* get a bootloader envvar */
  27 #define __BN_setbenv      15 /* get a bootloader envvar */
  28 #define __BN_setpmask     16 /* set the protection mask */
  29 #define __BN_readenv      17 /* read environment variables */
  30 #define __BN_flash_chattr_range         18
  31 #define __BN_flash_erase_range          19
  32 #define __BN_flash_write_range          20
  33
  34 /* Calling conventions compatible to (uC)linux/68k
  35  * We use similar macros to call into the bootloader as for uClinux
  36  */
  37
  38 #define __bsc_return(type, res) \
  39 do { \
  40    if ((unsigned long)(res) >= (unsigned long)(-64)) { \
  41       /* let errno be a function, preserve res in %d0 */ \
  42       int __err = -(res); \
  43       errno = __err; \
  44       res = -1; \
  45    } \
  46    return (type)(res); \
  47 } while (0)
  48
  49 #define _bsc0(type,name) \
  50 type name(void) \
  51 { \
  52    register long __res __asm__ ("%d0") = __BN_##name; \
  53    __asm__ __volatile__ ("trap #2" \
  54                          : "=g" (__res) \
  55                          : "0" (__res) \
  56                          ); \
  57    __bsc_return(type,__res); \
  58 }
  59
  60 #define _bsc1(type,name,atype,a) \
  61 type name(atype a) \
  62 { \
  63    register long __res __asm__ ("%d0") = __BN_##name; \
  64    register long __a __asm__ ("%d1") = (long)a; \
  65    __asm__ __volatile__ ("trap #2" \
  66                          : "=g" (__res) \
  67                          : "0" (__res), "d" (__a) \
  68                          ); \
  69    __bsc_return(type,__res); \
  70 }
  71
  72 #define _bsc2(type,name,atype,a,btype,b) \
  73 type name(atype a, btype b) \
  74 { \
  75    register long __res __asm__ ("%d0") = __BN_##name; \
  76    register long __a __asm__ ("%d1") = (long)a; \
  77    register long __b __asm__ ("%d2") = (long)b; \
  78    __asm__ __volatile__ ("trap #2" \
  79                          : "=g" (__res) \
  80                          : "0" (__res), "d" (__a), "d" (__b) \
  81                          ); \
  82    __bsc_return(type,__res); \
  83 }
  84
  85 #define _bsc3(type,name,atype,a,btype,b,ctype,c) \
  86 type name(atype a, btype b, ctype c) \
  87 { \
  88    register long __res __asm__ ("%d0") = __BN_##name; \
  89    register long __a __asm__ ("%d1") = (long)a; \
  90    register long __b __asm__ ("%d2") = (long)b; \
  91    register long __c __asm__ ("%d3") = (long)c; \
  92    __asm__ __volatile__ ("trap #2" \
  93                          : "=g" (__res) \
  94                          : "0" (__res), "d" (__a), "d" (__b), \
  95                            "d" (__c) \
  96                          ); \
  97    __bsc_return(type,__res); \
  98 }
  99
 100 #define _bsc4(type,name,atype,a,btype,b,ctype,c,dtype,d) \
 101 type name(atype a, btype b, ctype c, dtype d) \
 102 { \
 103    register long __res __asm__ ("%d0") = __BN_##name; \
 104    register long __a __asm__ ("%d1") = (long)a; \
 105    register long __b __asm__ ("%d2") = (long)b; \
 106    register long __c __asm__ ("%d3") = (long)c; \
 107    register long __d __asm__ ("%d4") = (long)d; \
 108    __asm__ __volatile__ ("trap #2" \
 109                          : "=g" (__res) \
 110                          : "0" (__res), "d" (__a), "d" (__b), \
 111                            "d" (__c), "d" (__d) \
 112                          ); \
 113    __bsc_return(type,__res); \
 114 }
 115
 116 #define _bsc5(type,name,atype,a,btype,b,ctype,c,dtype,d,etype,e) \
 117 type name(atype a, btype b, ctype c, dtype d, etype e) \
 118 { \
 119    register long __res __asm__ ("%d0") = __BN_##name; \
 120    register long __a __asm__ ("%d1") = (long)a; \
 121    register long __b __asm__ ("%d2") = (long)b; \
 122    register long __c __asm__ ("%d3") = (long)c; \
 123    register long __d __asm__ ("%d4") = (long)d; \
 124    register long __e __asm__ ("%d5") = (long)e; \
 125    __asm__ __volatile__ ("trap #2" \
 126                          : "=g" (__res) \
 127                          : "0" (__res), "d" (__a), "d" (__b), \
 128                            "d" (__c), "d" (__d), "d" (__e) \
 129                          ); \
 130    __bsc_return(type,__res); \
 131 }
 132
 133 #endif /* __BOOTSTD_H__ */