1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2025 Juniper Networks, Inc. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #ifndef _SYS_KEXEC_H_ 30 #define _SYS_KEXEC_H_ 31 32 #include <sys/types.h> 33 34 struct kexec_segment { 35 void *buf; 36 size_t bufsz; 37 vm_paddr_t mem; 38 vm_size_t memsz; 39 }; 40 41 /* Flags (aligned with Linux) */ 42 #define KEXEC_ON_CRASH 0x1 43 44 /* Aligned with Linux's limit */ 45 #define KEXEC_SEGMENT_MAX 16 46 47 #ifdef _KERNEL 48 struct kexec_segment_stage { 49 vm_page_t first_page; 50 void *map_buf; 51 vm_paddr_t target; 52 vm_size_t size; 53 vm_pindex_t pindex; 54 }; 55 56 struct kexec_image { 57 struct kexec_segment_stage segments[KEXEC_SEGMENT_MAX]; 58 vm_paddr_t entry; 59 struct vm_object *map_obj; /* Containing object */ 60 vm_offset_t map_addr; /* Mapped in kernel space */ 61 vm_size_t map_size; 62 vm_page_t first_md_page; 63 void *md_image; 64 }; 65 66 #endif 67 68 #ifndef _KERNEL 69 70 __BEGIN_DECLS 71 int kexec_load(uint64_t, unsigned long, struct kexec_segment *, unsigned long); 72 __END_DECLS 73 74 #else 75 76 void kexec_reboot_md(struct kexec_image *); 77 int kexec_load_md(struct kexec_image *); 78 79 #endif 80 81 #endif 82