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