bootinfo.h revision 1.3.72.1
1 1.3.72.1 yamt /* $NetBSD: bootinfo.h,v 1.3.72.1 2008/05/16 02:23:15 yamt 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 * 16 1.2 cdi * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 17 1.2 cdi * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 18 1.2 cdi * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19 1.2 cdi * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 20 1.2 cdi * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 1.2 cdi * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 1.2 cdi * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 1.2 cdi * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 1.2 cdi * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 1.2 cdi * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 1.2 cdi * POSSIBILITY OF SUCH DAMAGE. 27 1.2 cdi */ 28 1.2 cdi 29 1.2 cdi #ifndef _BOOTINFO_H_ 30 1.2 cdi #define _BOOTINFO_H_ 31 1.2 cdi 32 1.2 cdi #include <machine/param.h> 33 1.1 mrg #include <sparc/bootinfo.h> 34 1.2 cdi 35 1.2 cdi /* 36 1.2 cdi * The bootloader v1.9 and higher makes a call into a kernel with the following 37 1.2 cdi * arguments: 38 1.2 cdi * 39 1.2 cdi * %o0 OpenFirmware entry point, to keep Sun's updaters happy 40 1.2 cdi * %o1 Address of boot information vector (see below) 41 1.2 cdi * %o2 Length of the vector, in bytes 42 1.2 cdi * %o3 OpenFirmware entry point, to mimic Sun bootloader behavior 43 1.2 cdi * %o4 OpenFirmware entry point, to meet earlier NetBSD kernels 44 1.2 cdi * expectations 45 1.2 cdi * 46 1.2 cdi * All parameters are of void* type except for vector length which is of 47 1.2 cdi * integer type. 48 1.2 cdi * 49 1.2 cdi * The boot information vector format was dictated by earlier kernels and 50 1.2 cdi * starting from ofwboot v1.9 has four entries: 51 1.2 cdi * 52 1.2 cdi * +-------------------------------------+ 53 1.2 cdi * #0 | NetBSD boot magic number ('DDB2') | 54 1.2 cdi * +-------------------------------------+ 55 1.2 cdi * #1 | ksyms' table end address | 56 1.2 cdi * +-------------------------------------+ 57 1.2 cdi * #2 | ksyms' table start address | 58 1.2 cdi * +-------------------------------------+ 59 1.2 cdi * #3 | Pointer to a bootinfo binary object | 60 1.2 cdi * +-------------------------------------+ 61 1.2 cdi * 62 1.2 cdi * Kernels written for pre-v1.8 ofwboot require first three cells to present 63 1.2 cdi * in this particular order, those that rely on v1.9 and higher won't work if 64 1.2 cdi * the last pointer is not in the table; therefore, the vector cannot be 65 1.3 cdi * shorter than 4 * sizeof(uint32_t) or 4 * sizeof(uint64_t) for 32-bit and 66 1.2 cdi * 64-bit boot loader, respectively. 67 1.2 cdi * 68 1.2 cdi * As of ofwboot v1.9, bootinfo binary object is placed right after the kernel 69 1.2 cdi * data segment end, i.e. in the permanently locked 4MB page. There is no order 70 1.2 cdi * for the data located in bootinfo binary object. The kernel however expects 71 1.2 cdi * at least following parameters to exist in there: 72 1.2 cdi * 73 1.2 cdi * - Symbol information (size, start, end; see struct btinfo_symtab) 74 1.2 cdi * - Kernel end address, calculated as true kernel end address plus size of 75 1.2 cdi * space reserved for bootinfo binary object (struct btinfo_kernend) 76 1.2 cdi * - Number of text segment pages (struct btinfo_count) 77 1.2 cdi * - Number of data segment pages (struct btinfo_count) 78 1.2 cdi * - Array of text pages VA/PA (struct btinfo_tlb) 79 1.2 cdi * - Array of data pages VA/PA (struct btinfo_tlb) 80 1.2 cdi * 81 1.2 cdi * The last four data structures fully describe kernel mappings. ofwboot v1.9 82 1.2 cdi * and higher map the kernel with 4MB permanent pages and this is the only 83 1.2 cdi * way to let kernel know how exactly it was mapped. 84 1.2 cdi */ 85 1.2 cdi 86 1.2 cdi /* Boot magic number */ 87 1.2 cdi #define SPARC_MACHINE_OPENFIRMWARE 0x44444230 88 1.2 cdi 89 1.2 cdi #ifdef BOOTINFO_SIZE 90 1.2 cdi #undef BOOTINFO_SIZE 91 1.2 cdi #endif 92 1.2 cdi 93 1.2 cdi #define BOOTINFO_SIZE NBPG 94 1.2 cdi 95 1.2 cdi #define BTINFO_DTLB_SLOTS 100 96 1.2 cdi #define BTINFO_ITLB_SLOTS 101 97 1.2 cdi #define BTINFO_DTLB 102 98 1.2 cdi #define BTINFO_ITLB 103 99 1.2 cdi #define BTINFO_KERNEND 104 100 1.2 cdi 101 1.2 cdi #define LOOKUP_BOOTINFO(btp, info) \ 102 1.2 cdi do { \ 103 1.2 cdi if ( ((btp) = lookup_bootinfo(info)) == NULL) { \ 104 1.2 cdi panic("lookup_bootinfo: No " #info " found.\n"); \ 105 1.2 cdi } \ 106 1.2 cdi } while (0) 107 1.2 cdi 108 1.2 cdi struct tlb_entry { 109 1.2 cdi uint64_t te_pa; 110 1.2 cdi uint64_t te_va; 111 1.2 cdi }; 112 1.2 cdi 113 1.2 cdi struct btinfo_count { 114 1.2 cdi struct btinfo_common common; 115 1.2 cdi int count; 116 1.2 cdi }; 117 1.2 cdi 118 1.2 cdi struct btinfo_tlb { 119 1.2 cdi struct btinfo_common common; 120 1.2 cdi struct tlb_entry tlb[1]; 121 1.2 cdi }; 122 1.2 cdi 123 1.2 cdi struct btinfo_kernend { 124 1.2 cdi struct btinfo_common common; 125 1.2 cdi uint64_t addr; 126 1.2 cdi }; 127 1.2 cdi 128 1.2 cdi #endif /* _BOOTINFO_H_ */ 129
Indexes created Wed Oct 29 20:09:47 GMT 2025