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__ */ 134