kloader.h revision 1.1.2.5
1 1.1.2.5 skrll /* $NetBSD: kloader.h,v 1.1.2.5 2005/03/04 16:40:53 skrll Exp $ */ 2 1.1.2.2 skrll 3 1.1.2.2 skrll /*- 4 1.1.2.2 skrll * Copyright (c) 2001, 2002, 2004 The NetBSD Foundation, Inc. 5 1.1.2.2 skrll * All rights reserved. 6 1.1.2.2 skrll * 7 1.1.2.2 skrll * Redistribution and use in source and binary forms, with or without 8 1.1.2.2 skrll * modification, are permitted provided that the following conditions 9 1.1.2.2 skrll * are met: 10 1.1.2.2 skrll * 1. Redistributions of source code must retain the above copyright 11 1.1.2.2 skrll * notice, this list of conditions and the following disclaimer. 12 1.1.2.2 skrll * 2. Redistributions in binary form must reproduce the above copyright 13 1.1.2.2 skrll * notice, this list of conditions and the following disclaimer in the 14 1.1.2.2 skrll * documentation and/or other materials provided with the distribution. 15 1.1.2.2 skrll * 3. All advertising materials mentioning features or use of this software 16 1.1.2.2 skrll * must display the following acknowledgement: 17 1.1.2.2 skrll * This product includes software developed by the NetBSD 18 1.1.2.2 skrll * Foundation, Inc. and its contributors. 19 1.1.2.2 skrll * 4. Neither the name of The NetBSD Foundation nor the names of its 20 1.1.2.2 skrll * contributors may be used to endorse or promote products derived 21 1.1.2.2 skrll * from this software without specific prior written permission. 22 1.1.2.2 skrll * 23 1.1.2.2 skrll * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 24 1.1.2.2 skrll * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 25 1.1.2.2 skrll * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 26 1.1.2.2 skrll * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 27 1.1.2.2 skrll * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 28 1.1.2.2 skrll * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 29 1.1.2.2 skrll * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 30 1.1.2.2 skrll * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 31 1.1.2.2 skrll * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 32 1.1.2.2 skrll * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 33 1.1.2.2 skrll * POSSIBILITY OF SUCH DAMAGE. 34 1.1.2.2 skrll */ 35 1.1.2.2 skrll 36 1.1.2.2 skrll #ifndef _DEV_KLOADER_H_ 37 1.1.2.2 skrll #define _DEV_KLOADER_H_ 38 1.1.2.2 skrll 39 1.1.2.2 skrll #ifdef KLOADER_NO_BOOTINFO 40 1.1.2.2 skrll struct bootinfo { 41 1.1.2.2 skrll int dummy; 42 1.1.2.2 skrll }; 43 1.1.2.2 skrll #else 44 1.1.2.2 skrll #include <machine/bootinfo.h> 45 1.1.2.2 skrll #endif 46 1.1.2.2 skrll 47 1.1.2.2 skrll struct kloader_ops; 48 1.1.2.2 skrll struct kloader_page_tag; 49 1.1.2.2 skrll struct kloader_bootinfo; 50 1.1.2.2 skrll 51 1.1.2.2 skrll /* 52 1.1.2.2 skrll * kloader_bootfunc_t load new kernel into existing kernel area from 53 1.1.2.2 skrll * lined list of new kernel pieces. and then, jump to kernel 54 1.1.2.2 skrll * entry. This function must be PIC. 55 1.1.2.2 skrll */ 56 1.1.2.2 skrll typedef void kloader_bootfunc_t(struct kloader_bootinfo *, 57 1.1.2.2 skrll struct kloader_page_tag *); 58 1.1.2.2 skrll /* 59 1.1.2.2 skrll * koader_jumpfunc_t jump to boot loader described abobe. 60 1.1.2.2 skrll */ 61 1.1.2.2 skrll typedef void kloader_jumpfunc_t(kloader_bootfunc_t *, vaddr_t, 62 1.1.2.2 skrll struct kloader_bootinfo *, struct kloader_page_tag *); 63 1.1.2.2 skrll /* 64 1.1.2.2 skrll * reset func is optional. may be called when kloader reboot is failed. 65 1.1.2.2 skrll */ 66 1.1.2.2 skrll struct kloader_ops { 67 1.1.2.2 skrll kloader_jumpfunc_t *jump; 68 1.1.2.2 skrll kloader_bootfunc_t *boot; 69 1.1.2.2 skrll void (*reset)(void); 70 1.1.2.2 skrll }; 71 1.1.2.2 skrll 72 1.1.2.2 skrll /* 73 1.1.2.2 skrll * new kernel is primary loaded into discrete pages. 74 1.1.2.2 skrll */ 75 1.1.2.2 skrll struct kloader_page_tag { 76 1.1.2.2 skrll u_int32_t next; 77 1.1.2.2 skrll u_int32_t src; 78 1.1.2.2 skrll u_int32_t dst; 79 1.1.2.2 skrll u_int32_t sz; 80 1.1.2.2 skrll } __attribute__((__packed__, __aligned__(4))); 81 1.1.2.2 skrll 82 1.1.2.2 skrll #define KLOADER_KERNELARGS_MAX 256 83 1.1.2.2 skrll 84 1.1.2.2 skrll struct kloader_bootinfo { 85 1.1.2.2 skrll /* kernel entry point */ 86 1.1.2.2 skrll vaddr_t entry; 87 1.1.2.2 skrll 88 1.1.2.2 skrll /* argc, argv type boot argument */ 89 1.1.2.2 skrll int argc; 90 1.1.2.2 skrll char **argv; 91 1.1.2.2 skrll 92 1.1.2.2 skrll /* struct type boot argument */ 93 1.1.2.5 skrll struct bootinfo bootinfo; 94 1.1.2.2 skrll 95 1.1.2.2 skrll /* argv buffer */ 96 1.1.2.2 skrll char _argbuf[KLOADER_KERNELARGS_MAX]; 97 1.1.2.2 skrll } __attribute__((__packed__, __aligned__(4))); 98 1.1.2.2 skrll 99 1.1.2.2 skrll /* 100 1.1.2.2 skrll * kloader_reboot_setup sets machine dependent kloader_ops to 101 1.1.2.2 skrll * kloader. (call __kloader_reboot_setup here.) and load new kernel. 102 1.1.2.2 skrll */ 103 1.1.2.2 skrll void kloader_reboot_setup(const char *); 104 1.1.2.2 skrll void __kloader_reboot_setup(struct kloader_ops *, const char *); 105 1.1.2.2 skrll 106 1.1.2.2 skrll /* 107 1.1.2.2 skrll * kloader_reboot jumps to 2nd boot loader. 108 1.1.2.2 skrll * call after all shutdown hooks done. 109 1.1.2.2 skrll */ 110 1.1.2.2 skrll void kloader_reboot(void) __attribute__((__noreturn__)); 111 1.1.2.2 skrll 112 1.1.2.2 skrll /* 113 1.1.2.2 skrll * kloader_bootinfo_set sets arguments of new kernel to boot. this is optional. 114 1.1.2.2 skrll * theses parameter is passed to kloader_bootfunc_t. 115 1.1.2.2 skrll */ 116 1.1.2.2 skrll void kloader_bootinfo_set(struct kloader_bootinfo *, int, char *[], 117 1.1.2.2 skrll struct bootinfo *, int); 118 1.1.2.2 skrll 119 1.1.2.2 skrll #endif /* _DEV_KLOADER_H_ */ 120
Indexes created Wed Oct 29 01:09:52 GMT 2025