1 /*- 2 * SPDX-License-Identifier: BSD-4-Clause 3 * 4 * Copyright (c) 2013 Robert N. M. Watson 5 * Copyright (C) 1994 by Rodney W. Grimes, Milwaukie, Oregon 97222 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer as 13 * the first lines of this file unmodified. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed by Rodney W. Grimes. 20 * 4. The name of the author may not be used to endorse or promote products 21 * derived from this software without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY RODNEY W. GRIMES ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL RODNEY W. GRIMES BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * $FreeBSD$ 36 */ 37 38 #ifndef _MACHINE_BOOTINFO_H_ 39 #define _MACHINE_BOOTINFO_H_ 40 41 /* Only change the version number if you break compatibility. */ 42 #define BOOTINFO_VERSION 2 43 44 #define MIPS_BOOTINFO_MAGIC 0xCDEACDEA 45 46 #if defined(__mips_n32) || defined(__mips_n64) 47 typedef uint64_t bi_ptr_t; 48 #else 49 typedef uint32_t bi_ptr_t; 50 #endif 51 52 /* 53 * A zero bootinfo field often means that there is no info available. 54 * Flags are used to indicate the validity of fields where zero is a 55 * normal value. 56 */ 57 struct bootinfo { 58 /* bootinfo meta-data. */ 59 uint32_t bi_version; 60 uint32_t bi_size; 61 62 /* bootinfo contents. */ 63 uint64_t bi_boot2opts; /* boot2 flags to loader. */ 64 bi_ptr_t bi_kernelname; /* Pointer to name. */ 65 bi_ptr_t bi_nfs_diskless;/* Pointer to NFS data. */ 66 bi_ptr_t bi_dtb; /* Pointer to dtb. */ 67 bi_ptr_t bi_memsize; /* Physical memory size in bytes. */ 68 bi_ptr_t bi_modulep; /* Preloaded modules. */ 69 bi_ptr_t bi_boot_dev_type; /* Boot-device type. */ 70 bi_ptr_t bi_boot_dev_unitptr; /* Boot-device unit/pointer. */ 71 }; 72 73 /* 74 * Possible boot-device types passed from boot2 to loader, loader to kernel. 75 * In most cases, the object pointed to will hold a filesystem; one exception 76 * is BOOTINFO_DEV_TYPE_DRAM, which points to a pre-loaded object (e.g., 77 * loader, kernel). 78 */ 79 #define BOOTINFO_DEV_TYPE_DRAM 0 /* DRAM loader/kernel (ptr). */ 80 #define BOOTINFO_DEV_TYPE_CFI 1 /* CFI flash (unit). */ 81 #define BOOTINFO_DEV_TYPE_SDCARD 2 /* SD card (unit). */ 82 83 #ifdef _KERNEL 84 extern struct bootinfo bootinfo; 85 #endif 86 87 #endif /* !_MACHINE_BOOTINFO_H_ */ 88