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) \
39do { \
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) \
50type 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) \
61type 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) \
73type 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) \
86type 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) \
101type 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) \
117type 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__ */
134