projects/linux·blob master · refs

133 lines · 4.6 KiB

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__ */