Greg Kroah-Hartman | b244131 | 2017-11-01 15:07:57 +0100 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 35 | * We use similar macros to call into the bootloader as for uClinux |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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) \ |
Greg Ungerer | 0aee77b | 2006-06-28 16:12:45 +1000 | [diff] [blame] | 56 | ); \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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) \ |
Greg Ungerer | 0aee77b | 2006-06-28 16:12:45 +1000 | [diff] [blame] | 68 | ); \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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) \ |
Greg Ungerer | 0aee77b | 2006-06-28 16:12:45 +1000 | [diff] [blame] | 81 | ); \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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) \ |
Greg Ungerer | 0aee77b | 2006-06-28 16:12:45 +1000 | [diff] [blame] | 96 | ); \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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) \ |
Greg Ungerer | 0aee77b | 2006-06-28 16:12:45 +1000 | [diff] [blame] | 112 | ); \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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) \ |
Greg Ungerer | 0aee77b | 2006-06-28 16:12:45 +1000 | [diff] [blame] | 129 | ); \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 130 | __bsc_return(type,__res); \ |
| 131 | } |
| 132 | |
| 133 | #endif /* __BOOTSTD_H__ */ |