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: releng/11.0/sys/mips/include/bootinfo.h 262217 2014-02-19 09:19:09Z rwatson $
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_ */
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