94 lines
2.6 KiB
C
94 lines
2.6 KiB
C
/*-
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* Copyright (c) 2012 Andriy Gapon <avg@FreeBSD.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms are freely
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* permitted provided that the above copyright notice and this
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* paragraph and the following disclaimer are duplicated in all
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* such forms.
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*
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* This software is provided "AS IS" and without any express or
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* implied warranties, including, without limitation, the implied
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* warranties of merchantability and fitness for a particular
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* purpose.
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*
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* $FreeBSD$
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*/
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#ifndef _BOOT_I386_ARGS_H_
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#define _BOOT_I386_ARGS_H_
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#define KARGS_FLAGS_CD 0x1
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#define KARGS_FLAGS_PXE 0x2
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#define KARGS_FLAGS_ZFS 0x4
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#define KARGS_FLAGS_EXTARG 0x8 /* variably sized extended argument */
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#define BOOTARGS_SIZE 24 /* sizeof(struct bootargs) */
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#define BA_BOOTFLAGS 8 /* offsetof(struct bootargs, bootflags) */
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#define BA_BOOTINFO 20 /* offsetof(struct bootargs, bootinfo) */
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#define BI_SIZE 48 /* offsetof(struct bootinfo, bi_size) */
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/*
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* We reserve some space above BTX allocated stack for the arguments
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* and certain data that could hang off them. Currently only struct bootinfo
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* is supported in that category. The bootinfo is placed at the top
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* of the arguments area and the actual arguments are placed at ARGOFF offset
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* from the top and grow towards the top. Hopefully we have enough space
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* for bootinfo and the arguments to not run into each other.
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* Arguments area below ARGOFF is reserved for future use.
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*/
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#define ARGSPACE 0x1000 /* total size of the BTX args area */
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#define ARGOFF 0x800 /* actual args offset within the args area */
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#define ARGADJ (ARGSPACE - ARGOFF)
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#ifndef __ASSEMBLER__
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struct bootargs
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{
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uint32_t howto;
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uint32_t bootdev;
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uint32_t bootflags;
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union {
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struct {
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uint32_t pxeinfo;
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uint32_t reserved;
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};
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uint64_t zfspool;
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};
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uint32_t bootinfo;
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/*
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* If KARGS_FLAGS_EXTARG is set in bootflags, then the above fields
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* are followed by a uint32_t field that specifies a size of the
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* extended arguments (including the size field).
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*/
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};
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#ifdef LOADER_GELI_SUPPORT
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#include <crypto/intake.h>
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#endif
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struct geli_boot_args
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{
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uint32_t size;
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union {
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char gelipw[256];
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struct {
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char notapw; /*
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* single null byte to stop keybuf
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* being interpreted as a password
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*/
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uint32_t keybuf_sentinel;
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#ifdef LOADER_GELI_SUPPORT
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struct keybuf *keybuf;
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#else
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void *keybuf;
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#endif
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};
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};
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};
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#endif /*__ASSEMBLER__*/
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#endif /* !_BOOT_I386_ARGS_H_ */
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