bootinfo.h revision 1.2
1 1.2 cdi /* $NetBSD: bootinfo.h,v 1.2 2006/01/27 18:37:49 cdi Exp $ */ 2 1.1 mrg 3 1.2 cdi /*- 4 1.2 cdi * Copyright (c) 2005 The NetBSD Foundation, Inc. 5 1.2 cdi * All rights reserved. 6 1.2 cdi * 7 1.2 cdi * Redistribution and use in source and binary forms, with or without 8 1.2 cdi * modification, are permitted provided that the following conditions 9 1.2 cdi * are met: 10 1.2 cdi * 1. Redistributions of source code must retain the above copyright 11 1.2 cdi * notice, this list of conditions and the following disclaimer. 12 1.2 cdi * 2. Redistributions in binary form must reproduce the above copyright 13 1.2 cdi * notice, this list of conditions and the following disclaimer in the 14 1.2 cdi * documentation and/or other materials provided with the distribution. 15 1.2 cdi * 3. All advertising materials mentioning features or use of this software 16 1.2 cdi * must display the following acknowledgement: 17 1.2 cdi * This product includes software developed by the NetBSD 18 1.2 cdi * Foundation, Inc. and its contributors. 19 1.2 cdi * 4. Neither the name of The NetBSD Foundation nor the names of its 20 1.2 cdi * contributors may be used to endorse or promote products derived 21 1.2 cdi * from this software without specific prior written permission. 22 1.2 cdi * 23 1.2 cdi * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 24 1.2 cdi * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 25 1.2 cdi * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 26 1.2 cdi * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 27 1.2 cdi * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 28 1.2 cdi * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 29 1.2 cdi * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 30 1.2 cdi * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 31 1.2 cdi * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 32 1.2 cdi * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 33 1.2 cdi * POSSIBILITY OF SUCH DAMAGE. 34 1.2 cdi */ 35 1.2 cdi 36 1.2 cdi #ifndef _BOOTINFO_H_ 37 1.2 cdi #define _BOOTINFO_H_ 38 1.2 cdi 39 1.2 cdi #include <machine/param.h> 40 1.1 mrg #include <sparc/bootinfo.h> 41 1.2 cdi 42 1.2 cdi /* 43 1.2 cdi * The bootloader v1.9 and higher makes a call into a kernel with the following 44 1.2 cdi * arguments: 45 1.2 cdi * 46 1.2 cdi * %o0 OpenFirmware entry point, to keep Sun's updaters happy 47 1.2 cdi * %o1 Address of boot information vector (see below) 48 1.2 cdi * %o2 Length of the vector, in bytes 49 1.2 cdi * %o3 OpenFirmware entry point, to mimic Sun bootloader behavior 50 1.2 cdi * %o4 OpenFirmware entry point, to meet earlier NetBSD kernels 51 1.2 cdi * expectations 52 1.2 cdi * 53 1.2 cdi * All parameters are of void* type except for vector length which is of 54 1.2 cdi * integer type. 55 1.2 cdi * 56 1.2 cdi * The boot information vector format was dictated by earlier kernels and 57 1.2 cdi * starting from ofwboot v1.9 has four entries: 58 1.2 cdi * 59 1.2 cdi * +-------------------------------------+ 60 1.2 cdi * #0 | NetBSD boot magic number ('DDB2') | 61 1.2 cdi * +-------------------------------------+ 62 1.2 cdi * #1 | ksyms' table end address | 63 1.2 cdi * +-------------------------------------+ 64 1.2 cdi * #2 | ksyms' table start address | 65 1.2 cdi * +-------------------------------------+ 66 1.2 cdi * #3 | Pointer to a bootinfo binary object | 67 1.2 cdi * +-------------------------------------+ 68 1.2 cdi * 69 1.2 cdi * Kernels written for pre-v1.8 ofwboot require first three cells to present 70 1.2 cdi * in this particular order, those that rely on v1.9 and higher won't work if 71 1.2 cdi * the last pointer is not in the table; therefore, the vector cannot be 72 1.2 cdi * shorter than 4 * sizeof(u_int32_t) or 4 * sizeof(u_int64_t) for 32-bit and 73 1.2 cdi * 64-bit boot loader, respectively. 74 1.2 cdi * 75 1.2 cdi * As of ofwboot v1.9, bootinfo binary object is placed right after the kernel 76 1.2 cdi * data segment end, i.e. in the permanently locked 4MB page. There is no order 77 1.2 cdi * for the data located in bootinfo binary object. The kernel however expects 78 1.2 cdi * at least following parameters to exist in there: 79 1.2 cdi * 80 1.2 cdi * - Symbol information (size, start, end; see struct btinfo_symtab) 81 1.2 cdi * - Kernel end address, calculated as true kernel end address plus size of 82 1.2 cdi * space reserved for bootinfo binary object (struct btinfo_kernend) 83 1.2 cdi * - Number of text segment pages (struct btinfo_count) 84 1.2 cdi * - Number of data segment pages (struct btinfo_count) 85 1.2 cdi * - Array of text pages VA/PA (struct btinfo_tlb) 86 1.2 cdi * - Array of data pages VA/PA (struct btinfo_tlb) 87 1.2 cdi * 88 1.2 cdi * The last four data structures fully describe kernel mappings. ofwboot v1.9 89 1.2 cdi * and higher map the kernel with 4MB permanent pages and this is the only 90 1.2 cdi * way to let kernel know how exactly it was mapped. 91 1.2 cdi */ 92 1.2 cdi 93 1.2 cdi /* Boot magic number */ 94 1.2 cdi #define SPARC_MACHINE_OPENFIRMWARE 0x44444230 95 1.2 cdi 96 1.2 cdi #ifdef BOOTINFO_SIZE 97 1.2 cdi #undef BOOTINFO_SIZE 98 1.2 cdi #endif 99 1.2 cdi 100 1.2 cdi #define BOOTINFO_SIZE NBPG 101 1.2 cdi 102 1.2 cdi #define BTINFO_DTLB_SLOTS 100 103 1.2 cdi #define BTINFO_ITLB_SLOTS 101 104 1.2 cdi #define BTINFO_DTLB 102 105 1.2 cdi #define BTINFO_ITLB 103 106 1.2 cdi #define BTINFO_KERNEND 104 107 1.2 cdi 108 1.2 cdi #define LOOKUP_BOOTINFO(btp, info) \ 109 1.2 cdi do { \ 110 1.2 cdi if ( ((btp) = lookup_bootinfo(info)) == NULL) { \ 111 1.2 cdi panic("lookup_bootinfo: No " #info " found.\n"); \ 112 1.2 cdi } \ 113 1.2 cdi } while (0) 114 1.2 cdi 115 1.2 cdi struct tlb_entry { 116 1.2 cdi uint64_t te_pa; 117 1.2 cdi uint64_t te_va; 118 1.2 cdi }; 119 1.2 cdi 120 1.2 cdi struct btinfo_count { 121 1.2 cdi struct btinfo_common common; 122 1.2 cdi int count; 123 1.2 cdi }; 124 1.2 cdi 125 1.2 cdi struct btinfo_tlb { 126 1.2 cdi struct btinfo_common common; 127 1.2 cdi struct tlb_entry tlb[1]; 128 1.2 cdi }; 129 1.2 cdi 130 1.2 cdi struct btinfo_kernend { 131 1.2 cdi struct btinfo_common common; 132 1.2 cdi uint64_t addr; 133 1.2 cdi }; 134 1.2 cdi 135 1.2 cdi #endif /* _BOOTINFO_H_ */ 136
Indexes created Fri Sep 26 20:09:58 GMT 2025