1/* $NetBSD: efi.c,v 1.1 2006/04/07 14:21:18 cherry Exp $ */ 2 3/*- 4 * Copyright (c) 2004 Marcel Moolenaar 5 * Copyright (c) 2001 Doug Rabson 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. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30#include <sys/cdefs.h> 31#include <sys/param.h> 32#include <sys/systm.h> 33#include <sys/lock.h> 34 35#include <machine/bootinfo.h> 36#include <machine/efi.h> 37#include <machine/sal.h> 38#include <machine/vmparam.h> 39 40extern uint64_t ia64_call_efi_physical(uint64_t, uint64_t, uint64_t, uint64_t, 41 uint64_t, uint64_t); 42 43static struct efi_systbl *efi_systbl; 44static struct efi_cfgtbl *efi_cfgtbl; 45static struct efi_rt *efi_runtime; 46 47void 48efi_boot_finish(void) 49{ 50} 51 52/* 53 * Collect the entry points for PAL and SAL. Be extra careful about NULL 54 * pointer values. We're running pre-console, so it's better to return 55 * error values than to cause panics, machine checks and other traps and 56 * faults. Keep this minimal... 57 */ 58int 59efi_boot_minimal(uint64_t systbl) 60{ 61 struct efi_md *md; 62 efi_status status; 63 64 if (systbl == 0) 65 return (EINVAL); 66 efi_systbl = (struct efi_systbl *)IA64_PHYS_TO_RR7(systbl); 67 if (efi_systbl->st_hdr.th_sig != EFI_SYSTBL_SIG) { 68 efi_systbl = NULL; 69 return (EFAULT); 70 } 71 efi_cfgtbl = (efi_systbl->st_cfgtbl == 0) ? NULL : 72 (struct efi_cfgtbl *)IA64_PHYS_TO_RR7(efi_systbl->st_cfgtbl); 73 if (efi_cfgtbl == NULL) 74 return (ENOENT); 75 efi_runtime = (efi_systbl->st_rt == 0) ? NULL : 76 (struct efi_rt *)IA64_PHYS_TO_RR7(efi_systbl->st_rt); 77 if (efi_runtime == NULL) 78 return (ENOENT); 79 80 /* 81 * Relocate runtime memory segments for firmware. 82 */ 83 md = efi_md_first(); 84 while (md != NULL) { 85 if (md->md_attr & EFI_MD_ATTR_RT) { 86 if (md->md_attr & EFI_MD_ATTR_WB) 87 md->md_virt = 88 (void *)IA64_PHYS_TO_RR7(md->md_phys); 89 else if (md->md_attr & EFI_MD_ATTR_UC) 90 md->md_virt = 91 (void *)IA64_PHYS_TO_RR6(md->md_phys); 92 } 93 md = efi_md_next(md); 94 } 95 status = ia64_call_efi_physical((uint64_t)efi_runtime->rt_setvirtual, 96 bootinfo.bi_memmap_size, bootinfo.bi_memdesc_size, 97 bootinfo.bi_memdesc_version, bootinfo.bi_memmap, 0); 98 return ((status < 0) ? EFAULT : 0); 99} 100 101void * 102efi_get_table(struct uuid *uuid) 103{ 104 struct efi_cfgtbl *ct; 105 u_long count; 106 107 if (efi_cfgtbl == NULL) 108 return (NULL); 109 count = efi_systbl->st_entries; 110 ct = efi_cfgtbl; 111 while (count--) { 112 if (!memcmp(&ct->ct_uuid, uuid, sizeof(*uuid))) 113 return ((void *)IA64_PHYS_TO_RR7(ct->ct_data)); 114 ct++; 115 } 116 return (NULL); 117} 118 119void 120efi_get_time(struct efi_tm *tm) 121{ 122 123 efi_runtime->rt_gettime(tm, NULL); 124} 125 126struct efi_md * 127efi_md_first(void) 128{ 129 130 if (bootinfo.bi_memmap == 0) 131 return (NULL); 132 return ((struct efi_md *)IA64_PHYS_TO_RR7(bootinfo.bi_memmap)); 133} 134 135struct efi_md * 136efi_md_next(struct efi_md *md) 137{ 138 uint64_t plim; 139 140 plim = IA64_PHYS_TO_RR7(bootinfo.bi_memmap + bootinfo.bi_memmap_size); 141 md = (struct efi_md *)((uintptr_t)md + bootinfo.bi_memdesc_size); 142 return ((md >= (struct efi_md *)plim) ? NULL : md); 143} 144 145void 146efi_reset_system(void) 147{ 148 149 if (efi_runtime != NULL) 150 efi_runtime->rt_reset(EFI_RESET_WARM, 0, 0, NULL); 151 panic("%s: unable to reset the machine", __func__); 152} 153 154efi_status 155efi_set_time(struct efi_tm *tm) 156{ 157 158 return (efi_runtime->rt_settime(tm)); 159} 160