113 lines
3.4 KiB
C
113 lines
3.4 KiB
C
/* $NetBSD: kloader.h,v 1.7 2008/09/08 23:36:54 gmcgarry Exp $ */
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/*-
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* Copyright (c) 2001, 2002, 2004 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _DEV_KLOADER_H_
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#define _DEV_KLOADER_H_
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#ifdef KLOADER_NO_BOOTINFO
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struct bootinfo {
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int dummy;
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};
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#else
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#include <machine/bootinfo.h>
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#endif
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struct kloader_ops;
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struct kloader_page_tag;
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struct kloader_bootinfo;
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/*
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* kloader_bootfunc_t load new kernel into existing kernel area from
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* lined list of new kernel pieces. and then, jump to kernel
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* entry. This function must be PIC.
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*/
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typedef void kloader_bootfunc_t(struct kloader_bootinfo *,
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struct kloader_page_tag *);
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/*
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* koader_jumpfunc_t jump to boot loader described abobe.
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*/
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typedef void kloader_jumpfunc_t(kloader_bootfunc_t *, vaddr_t,
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struct kloader_bootinfo *, struct kloader_page_tag *);
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/*
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* reset func is optional. may be called when kloader reboot is failed.
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*/
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struct kloader_ops {
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kloader_jumpfunc_t *jump;
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kloader_bootfunc_t *boot;
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void (*reset)(void);
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};
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/*
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* new kernel is primary loaded into discrete pages.
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*/
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struct kloader_page_tag {
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uint32_t next;
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uint32_t src;
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uint32_t dst;
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uint32_t sz;
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} __packed __aligned(4);
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#define KLOADER_KERNELARGS_MAX 256
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struct kloader_bootinfo {
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/* kernel entry point */
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vaddr_t entry;
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/* argc, argv type boot argument */
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int argc;
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char **argv;
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/* struct type boot argument */
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struct bootinfo bootinfo;
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/* argv buffer */
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char _argbuf[KLOADER_KERNELARGS_MAX];
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} __packed __aligned(4);
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/*
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* kloader_reboot_setup sets machine dependent kloader_ops to
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* kloader. (call __kloader_reboot_setup here.) and load new kernel.
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*/
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void kloader_reboot_setup(const char *);
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void __kloader_reboot_setup(struct kloader_ops *, const char *);
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/*
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* kloader_reboot jumps to 2nd boot loader.
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* call after all shutdown hooks done.
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*/
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void kloader_reboot(void) __dead;
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/*
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* kloader_bootinfo_set sets arguments of new kernel to boot. this is optional.
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* theses parameter is passed to kloader_bootfunc_t.
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*/
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void kloader_bootinfo_set(struct kloader_bootinfo *, int, char *[],
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struct bootinfo *, int);
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#endif /* _DEV_KLOADER_H_ */
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