1 /*- 2 * Copyright (c) 2012 Andriy Gapon <avg@FreeBSD.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms are freely 6 * permitted provided that the above copyright notice and this 7 * paragraph and the following disclaimer are duplicated in all 8 * such forms. 9 * 10 * This software is provided "AS IS" and without any express or 11 * implied warranties, including, without limitation, the implied 12 * warranties of merchantability and fitness for a particular 13 * purpose. 14 * 15 * $FreeBSD$ 16 */ 17 18 #ifndef _BOOT_I386_ARGS_H_ 19 #define _BOOT_I386_ARGS_H_ 20 21 #define KARGS_FLAGS_CD 0x1 22 #define KARGS_FLAGS_PXE 0x2 23 #define KARGS_FLAGS_ZFS 0x4 24 #define KARGS_FLAGS_EXTARG 0x8 /* variably sized extended argument */ 25 26 #define BOOTARGS_SIZE 24 /* sizeof(struct bootargs) */ 27 #define BA_BOOTFLAGS 8 /* offsetof(struct bootargs, bootflags) */ 28 #define BA_BOOTINFO 20 /* offsetof(struct bootargs, bootinfo) */ 29 #define BI_SIZE 48 /* offsetof(struct bootinfo, bi_size) */ 30 31 /* 32 * We reserve some space above BTX allocated stack for the arguments 33 * and certain data that could hang off them. Currently only struct bootinfo 34 * is supported in that category. The bootinfo is placed at the top 35 * of the arguments area and the actual arguments are placed at ARGOFF offset 36 * from the top and grow towards the top. Hopefully we have enough space 37 * for bootinfo and the arguments to not run into each other. 38 * Arguments area below ARGOFF is reserved for future use. 39 */ 40 #define ARGSPACE 0x1000 /* total size of the BTX args area */ 41 #define ARGOFF 0x800 /* actual args offset within the args area */ 42 #define ARGADJ (ARGSPACE - ARGOFF) 43 44 #ifndef __ASSEMBLER__ 45 46 struct bootargs 47 { 48 uint32_t howto; 49 uint32_t bootdev; 50 uint32_t bootflags; 51 union { 52 struct { 53 uint32_t pxeinfo; 54 uint32_t reserved; 55 }; 56 uint64_t zfspool; 57 }; 58 uint32_t bootinfo; 59 60 /* 61 * If KARGS_FLAGS_EXTARG is set in bootflags, then the above fields 62 * are followed by a uint32_t field that specifies a size of the 63 * extended arguments (including the size field). 64 */ 65 }; 66 67 #ifdef LOADER_GELI_SUPPORT 68 #include <crypto/intake.h> 69 #endif 70 71 struct geli_boot_args 72 { 73 uint32_t size; 74 union { 75 char gelipw[256]; 76 struct { 77 char notapw; /* 78 * single null byte to stop keybuf 79 * being interpreted as a password 80 */ 81 uint32_t keybuf_sentinel; 82 #ifdef LOADER_GELI_SUPPORT 83 struct keybuf *keybuf; 84 #else 85 void *keybuf; 86 #endif 87 }; 88 }; 89 }; 90 91 #endif /*__ASSEMBLER__*/ 92 93 #endif /* !_BOOT_I386_ARGS_H_ */ 94