acpi_wakecode.S revision 1.1.2.10
1 1.1.2.10 joerg /* $NetBSD: acpi_wakecode.S,v 1.1.2.10 2007/10/26 15:42:04 joerg Exp $ */ 2 1.1.2.1 jmcneill 3 1.1.2.1 jmcneill /*- 4 1.1.2.5 joerg * Copyright (c) 2002 The NetBSD Foundation, Inc. 5 1.1.2.1 jmcneill * All rights reserved. 6 1.1.2.1 jmcneill * 7 1.1.2.1 jmcneill * This code is derived from software contributed to The NetBSD Foundation 8 1.1.2.5 joerg * by Takuya SHIOZAKI. 9 1.1.2.1 jmcneill * 10 1.1.2.1 jmcneill * Redistribution and use in source and binary forms, with or without 11 1.1.2.1 jmcneill * modification, are permitted provided that the following conditions 12 1.1.2.1 jmcneill * are met: 13 1.1.2.1 jmcneill * 1. Redistributions of source code must retain the above copyright 14 1.1.2.1 jmcneill * notice, this list of conditions and the following disclaimer. 15 1.1.2.1 jmcneill * 2. Redistributions in binary form must reproduce the above copyright 16 1.1.2.1 jmcneill * notice, this list of conditions and the following disclaimer in the 17 1.1.2.1 jmcneill * documentation and/or other materials provided with the distribution. 18 1.1.2.1 jmcneill * 3. All advertising materials mentioning features or use of this software 19 1.1.2.1 jmcneill * must display the following acknowledgement: 20 1.1.2.1 jmcneill * This product includes software developed by the NetBSD 21 1.1.2.1 jmcneill * Foundation, Inc. and its contributors. 22 1.1.2.1 jmcneill * 4. Neither the name of The NetBSD Foundation nor the names of its 23 1.1.2.1 jmcneill * contributors may be used to endorse or promote products derived 24 1.1.2.1 jmcneill * from this software without specific prior written permission. 25 1.1.2.1 jmcneill * 26 1.1.2.1 jmcneill * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 1.1.2.1 jmcneill * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 1.1.2.1 jmcneill * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 1.1.2.1 jmcneill * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 1.1.2.1 jmcneill * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 1.1.2.1 jmcneill * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 1.1.2.1 jmcneill * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 1.1.2.1 jmcneill * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 1.1.2.1 jmcneill * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 1.1.2.1 jmcneill * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 1.1.2.1 jmcneill * POSSIBILITY OF SUCH DAMAGE. 37 1.1.2.1 jmcneill */ 38 1.1.2.1 jmcneill 39 1.1.2.1 jmcneill 40 1.1.2.1 jmcneill /* 41 1.1.2.1 jmcneill * This code is derived from FreeBSD. Original copyrights: 42 1.1.2.1 jmcneill * 43 1.1.2.1 jmcneill * Copyright (c) 2001 Takanori Watanabe <takawata (at) jp.freebsd.org> 44 1.1.2.1 jmcneill * Copyright (c) 2001 Mitsuru IWASAKI <iwasaki (at) jp.freebsd.org> 45 1.1.2.1 jmcneill * All rights reserved. 46 1.1.2.1 jmcneill * 47 1.1.2.1 jmcneill * Redistribution and use in source and binary forms, with or without 48 1.1.2.1 jmcneill * modification, are permitted provided that the following conditions 49 1.1.2.1 jmcneill * are met: 50 1.1.2.1 jmcneill * 1. Redistributions of source code must retain the above copyright 51 1.1.2.1 jmcneill * notice, this list of conditions and the following disclaimer. 52 1.1.2.1 jmcneill * 2. Redistributions in binary form must reproduce the above copyright 53 1.1.2.1 jmcneill * notice, this list of conditions and the following disclaimer in the 54 1.1.2.1 jmcneill * documentation and/or other materials provided with the distribution. 55 1.1.2.1 jmcneill * 56 1.1.2.1 jmcneill * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 57 1.1.2.1 jmcneill * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 58 1.1.2.1 jmcneill * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 59 1.1.2.1 jmcneill * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 60 1.1.2.1 jmcneill * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 61 1.1.2.1 jmcneill * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 62 1.1.2.1 jmcneill * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 63 1.1.2.1 jmcneill * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 64 1.1.2.1 jmcneill * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 65 1.1.2.1 jmcneill * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 66 1.1.2.1 jmcneill * SUCH DAMAGE. 67 1.1.2.1 jmcneill * 68 1.1.2.1 jmcneill * FreeBSD: src/sys/i386/acpica/acpi_wakecode.S,v 1.1 2001/07/20 06:07:31 takawata Exp 69 1.1.2.1 jmcneill */ 70 1.1.2.1 jmcneill 71 1.1.2.1 jmcneill #define _LOCORE 72 1.1.2.1 jmcneill 73 1.1.2.5 joerg #include <machine/psl.h> 74 1.1.2.1 jmcneill #include <machine/specialreg.h> 75 1.1.2.1 jmcneill #include <machine/segments.h> 76 1.1.2.1 jmcneill 77 1.1.2.6 joerg #define ACPI_WAKEUP_ADDR 0x3000 78 1.1.2.6 joerg 79 1.1.2.1 jmcneill .text 80 1.1.2.1 jmcneill .code16 81 1.1.2.5 joerg .org 0 /* ACPI spec says: cs==(phys>>8), ip==(phys&0x000F) */ 82 1.1.2.3 jmcneill .globl wakeup_16 83 1.1.2.1 jmcneill wakeup_16: 84 1.1.2.1 jmcneill nop 85 1.1.2.1 jmcneill cli 86 1.1.2.1 jmcneill cld 87 1.1.2.1 jmcneill 88 1.1.2.1 jmcneill /* Set up segment registers for real mode */ 89 1.1.2.5 joerg movw %cs,%ax 90 1.1.2.5 joerg movw %ax,%ds 91 1.1.2.5 joerg movw %ax,%ss 92 1.1.2.1 jmcneill 93 1.1.2.5 joerg /* Small call stack */ 94 1.1.2.5 joerg mov $0x1000,%sp 95 1.1.2.1 jmcneill 96 1.1.2.1 jmcneill /* Clear flags */ 97 1.1.2.1 jmcneill pushl $0 98 1.1.2.1 jmcneill popfl 99 1.1.2.1 jmcneill 100 1.1.2.1 jmcneill /* Only beep on reset if machdep.acpi_beep_on_reset=1 */ 101 1.1.2.5 joerg cmpb $1,WAKEUP_beep_on_reset 102 1.1.2.5 joerg jne 1f 103 1.1.2.5 joerg movb $0xc0,%al 104 1.1.2.5 joerg outb %al,$0x42 105 1.1.2.5 joerg movb $0x04,%al 106 1.1.2.5 joerg outb %al,$0x42 107 1.1.2.5 joerg inb $0x61,%al 108 1.1.2.5 joerg orb $0x3,%al 109 1.1.2.5 joerg outb %al,$0x61 110 1.1.2.5 joerg 1: 111 1.1.2.1 jmcneill 112 1.1.2.1 jmcneill /* Only reset the VBIOS if machdep.acpi_vbios_reset=1 */ 113 1.1.2.5 joerg cmpb $1,WAKEUP_vbios_reset 114 1.1.2.5 joerg jne 1f 115 1.1.2.1 jmcneill 116 1.1.2.1 jmcneill /* Kick the VBIOS. */ 117 1.1.2.5 joerg lcall $0xc000,$3 118 1.1.2.1 jmcneill 119 1.1.2.8 joerg /* Reset registers in case the VBIOS changed them. */ 120 1.1.2.5 joerg movw %cs,%ax 121 1.1.2.5 joerg movw %ax,%ds 122 1.1.2.5 joerg movw %ax,%ss 123 1.1.2.5 joerg 1: 124 1.1.2.1 jmcneill 125 1.1.2.5 joerg /* Disable beep again if machdep.acpi_beep_on_reset=1 */ 126 1.1.2.5 joerg cmpb $1,WAKEUP_beep_on_reset 127 1.1.2.5 joerg jne 1f 128 1.1.2.5 joerg inb $0x61,%al 129 1.1.2.5 joerg andb $0xfc,%al 130 1.1.2.5 joerg outb %al,$0x61 131 1.1.2.5 joerg 1: 132 1.1.2.1 jmcneill 133 1.1.2.8 joerg /* Load temporary 32bit GDT */ 134 1.1.2.5 joerg data32 addr32 lgdt tmp_gdt 135 1.1.2.3 jmcneill 136 1.1.2.8 joerg /* Enable protected mode w/o paging */ 137 1.1.2.5 joerg mov %cr0,%eax 138 1.1.2.5 joerg orl $(CR0_PE),%eax 139 1.1.2.5 joerg mov %eax,%cr0 140 1.1.2.1 jmcneill 141 1.1.2.5 joerg wakeup_sw32: 142 1.1.2.8 joerg /* 143 1.1.2.8 joerg * Switch to protected mode by intersegmental jump. 144 1.1.2.8 joerg * Target and everything else has to compensate for the new origin 145 1.1.2.8 joerg * as this is using the flat memory model now. 146 1.1.2.8 joerg */ 147 1.1.2.8 joerg 148 1.1.2.6 joerg ljmpl $0x8,$wakeup_32 + ACPI_WAKEUP_ADDR 149 1.1.2.1 jmcneill 150 1.1.2.1 jmcneill .code32 151 1.1.2.5 joerg .align 16 152 1.1.2.1 jmcneill wakeup_32: 153 1.1.2.5 joerg /* 154 1.1.2.5 joerg * Switched to protected mode w/o paging 155 1.1.2.5 joerg */ 156 1.1.2.1 jmcneill 157 1.1.2.3 jmcneill nop 158 1.1.2.8 joerg /* Set up segment registers and initial stack for protected mode */ 159 1.1.2.6 joerg movw $0x10, %ax 160 1.1.2.5 joerg movw %ax,%ds 161 1.1.2.7 joerg movw %ax,%ss 162 1.1.2.5 joerg 163 1.1.2.9 joerg movl $(ACPI_WAKEUP_ADDR + 4096),%esp 164 1.1.2.1 jmcneill 165 1.1.2.5 joerg /* First, reset the PSL. */ 166 1.1.2.1 jmcneill pushl $PSL_MBO 167 1.1.2.1 jmcneill popfl 168 1.1.2.1 jmcneill 169 1.1.2.10 joerg /* Enable PAE and potentially PSE */ 170 1.1.2.10 joerg movl WAKEUP_r_cr4 + ACPI_WAKEUP_ADDR,%eax 171 1.1.2.5 joerg movl %eax,%cr4 172 1.1.2.1 jmcneill 173 1.1.2.8 joerg /* Enable SYSCALL extension and Long Mode */ 174 1.1.2.5 joerg movl $MSR_EFER,%ecx 175 1.1.2.1 jmcneill rdmsr 176 1.1.2.5 joerg xorl %eax,%eax 177 1.1.2.5 joerg orl $(EFER_LME|EFER_SCE),%eax 178 1.1.2.1 jmcneill wrmsr 179 1.1.2.1 jmcneill 180 1.1.2.8 joerg /* Load temporary PML4, code will switch to full PML4 later */ 181 1.1.2.6 joerg movl WAKEUP_r_cr3 + ACPI_WAKEUP_ADDR,%eax 182 1.1.2.5 joerg movl %eax,%cr3 183 1.1.2.1 jmcneill 184 1.1.2.8 joerg /* Reload cr0 with normal values, activating paging effectively */ 185 1.1.2.6 joerg movl WAKEUP_r_cr0 + ACPI_WAKEUP_ADDR,%eax 186 1.1.2.5 joerg movl %eax,%cr0 187 1.1.2.8 joerg /* Flush prefetch queue */ 188 1.1.2.5 joerg jmp 1f 189 1.1.2.5 joerg 1: 190 1.1.2.8 joerg /* Switch to temporary 64bit GDT */ 191 1.1.2.6 joerg lgdt tmp_gdt64 + ACPI_WAKEUP_ADDR 192 1.1.2.5 joerg 193 1.1.2.8 joerg /* Switch to long mode using intersegmental jump. */ 194 1.1.2.6 joerg ljmp $0x8, $wakeup_64 + ACPI_WAKEUP_ADDR 195 1.1.2.1 jmcneill 196 1.1.2.1 jmcneill .code64 197 1.1.2.1 jmcneill wakeup_64: 198 1.1.2.1 jmcneill 199 1.1.2.8 joerg /* Reload normal segment registers with correct values */ 200 1.1.2.8 joerg movw $GSEL(GDATA_SEL, SEL_KPL),%ax 201 1.1.2.5 joerg movw %ax,%ds 202 1.1.2.6 joerg movw %ax,%es 203 1.1.2.6 joerg movw %ax,%ss 204 1.1.2.1 jmcneill 205 1.1.2.6 joerg movq WAKEUP_restorecpu + ACPI_WAKEUP_ADDR,%rbx 206 1.1.2.1 jmcneill 207 1.1.2.8 joerg /* Switch to the normal kernel GDT */ 208 1.1.2.6 joerg lgdt WAKEUP_r_gdt + ACPI_WAKEUP_ADDR 209 1.1.2.5 joerg 210 1.1.2.8 joerg /* Continue with wakeup in the high-level wakeup code */ 211 1.1.2.5 joerg jmp *%rbx 212 1.1.2.5 joerg 213 1.1.2.5 joerg .align 8 214 1.1.2.1 jmcneill tmp_gdt: 215 1.1.2.1 jmcneill .word 0xffff 216 1.1.2.6 joerg .long tmp_gdtable + ACPI_WAKEUP_ADDR 217 1.1.2.1 jmcneill 218 1.1.2.5 joerg .align 8, 0 219 1.1.2.1 jmcneill tmp_gdtable: 220 1.1.2.1 jmcneill /* null */ 221 1.1.2.1 jmcneill .word 0, 0 222 1.1.2.1 jmcneill .byte 0, 0, 0, 0 223 1.1.2.1 jmcneill /* code */ 224 1.1.2.1 jmcneill .word 0xffff, 0 225 1.1.2.1 jmcneill .byte 0, 0x9f, 0xcf, 0 226 1.1.2.1 jmcneill /* data */ 227 1.1.2.1 jmcneill .word 0xffff, 0 228 1.1.2.1 jmcneill .byte 0, 0x93, 0xcf, 0 229 1.1.2.1 jmcneill 230 1.1.2.1 jmcneill tmp_gdt64: 231 1.1.2.5 joerg .word 0xffff 232 1.1.2.6 joerg .long tmp_gdtable64 + ACPI_WAKEUP_ADDR 233 1.1.2.1 jmcneill 234 1.1.2.1 jmcneill tmp_gdtable64: 235 1.1.2.5 joerg .quad 0x0000000000000000 236 1.1.2.5 joerg .quad 0x00af9a000000ffff 237 1.1.2.5 joerg .quad 0x00cf92000000ffff 238 1.1.2.5 joerg 239 1.1.2.1 jmcneill .align 16, 0 240 1.1.2.5 joerg .global WAKEUP_r_cr0 241 1.1.2.5 joerg WAKEUP_r_cr0: .quad 0 242 1.1.2.5 joerg .global WAKEUP_r_cr3 243 1.1.2.5 joerg WAKEUP_r_cr3: .quad 0 244 1.1.2.10 joerg .global WAKEUP_r_cr4 245 1.1.2.10 joerg WAKEUP_r_cr4: .quad 0 246 1.1.2.5 joerg 247 1.1.2.5 joerg .global WAKEUP_r_gdt 248 1.1.2.5 joerg WAKEUP_r_gdt: .word 0 249 1.1.2.1 jmcneill .quad 0 250 1.1.2.5 joerg .global WAKEUP_restorecpu 251 1.1.2.5 joerg WAKEUP_restorecpu: .quad 0 252 1.1.2.5 joerg 253 1.1.2.3 jmcneill .global WAKEUP_vbios_reset 254 1.1.2.5 joerg WAKEUP_vbios_reset: .byte 0 255 1.1.2.5 joerg .global WAKEUP_beep_on_reset 256 1.1.2.5 joerg WAKEUP_beep_on_reset: .byte 0 257
Indexes created Thu Oct 02 14:10:14 GMT 2025