acpi_wakecode.S revision 1.3.4.2
1 1.3.4.2 yamt /* $NetBSD: acpi_wakecode.S,v 1.3.4.2 2008/01/21 09:35:12 yamt Exp $ */ 2 1.3.4.2 yamt 3 1.3.4.2 yamt /*- 4 1.3.4.2 yamt * Copyright (c) 2007 Joerg Sonnenberger <joerg (at) netbsd.org> 5 1.3.4.2 yamt * 6 1.3.4.2 yamt * Copyright (c) 2002 The NetBSD Foundation, Inc. 7 1.3.4.2 yamt * All rights reserved. 8 1.3.4.2 yamt * 9 1.3.4.2 yamt * This code is derived from software contributed to The NetBSD Foundation 10 1.3.4.2 yamt * by Takuya SHIOZAKI. 11 1.3.4.2 yamt * 12 1.3.4.2 yamt * Redistribution and use in source and binary forms, with or without 13 1.3.4.2 yamt * modification, are permitted provided that the following conditions 14 1.3.4.2 yamt * are met: 15 1.3.4.2 yamt * 1. Redistributions of source code must retain the above copyright 16 1.3.4.2 yamt * notice, this list of conditions and the following disclaimer. 17 1.3.4.2 yamt * 2. Redistributions in binary form must reproduce the above copyright 18 1.3.4.2 yamt * notice, this list of conditions and the following disclaimer in the 19 1.3.4.2 yamt * documentation and/or other materials provided with the distribution. 20 1.3.4.2 yamt * 3. All advertising materials mentioning features or use of this software 21 1.3.4.2 yamt * must display the following acknowledgement: 22 1.3.4.2 yamt * This product includes software developed by the NetBSD 23 1.3.4.2 yamt * Foundation, Inc. and its contributors. 24 1.3.4.2 yamt * 4. Neither the name of The NetBSD Foundation nor the names of its 25 1.3.4.2 yamt * contributors may be used to endorse or promote products derived 26 1.3.4.2 yamt * from this software without specific prior written permission. 27 1.3.4.2 yamt * 28 1.3.4.2 yamt * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 29 1.3.4.2 yamt * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 30 1.3.4.2 yamt * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 31 1.3.4.2 yamt * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 32 1.3.4.2 yamt * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 33 1.3.4.2 yamt * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 34 1.3.4.2 yamt * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 35 1.3.4.2 yamt * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 36 1.3.4.2 yamt * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 37 1.3.4.2 yamt * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 38 1.3.4.2 yamt * POSSIBILITY OF SUCH DAMAGE. 39 1.3.4.2 yamt */ 40 1.3.4.2 yamt 41 1.3.4.2 yamt 42 1.3.4.2 yamt /* 43 1.3.4.2 yamt * This code is derived from FreeBSD. Original copyrights: 44 1.3.4.2 yamt * 45 1.3.4.2 yamt * Copyright (c) 2001 Takanori Watanabe <takawata (at) jp.freebsd.org> 46 1.3.4.2 yamt * Copyright (c) 2001 Mitsuru IWASAKI <iwasaki (at) jp.freebsd.org> 47 1.3.4.2 yamt * All rights reserved. 48 1.3.4.2 yamt * 49 1.3.4.2 yamt * Redistribution and use in source and binary forms, with or without 50 1.3.4.2 yamt * modification, are permitted provided that the following conditions 51 1.3.4.2 yamt * are met: 52 1.3.4.2 yamt * 1. Redistributions of source code must retain the above copyright 53 1.3.4.2 yamt * notice, this list of conditions and the following disclaimer. 54 1.3.4.2 yamt * 2. Redistributions in binary form must reproduce the above copyright 55 1.3.4.2 yamt * notice, this list of conditions and the following disclaimer in the 56 1.3.4.2 yamt * documentation and/or other materials provided with the distribution. 57 1.3.4.2 yamt * 58 1.3.4.2 yamt * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 59 1.3.4.2 yamt * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 60 1.3.4.2 yamt * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 61 1.3.4.2 yamt * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 62 1.3.4.2 yamt * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 63 1.3.4.2 yamt * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 64 1.3.4.2 yamt * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 65 1.3.4.2 yamt * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 66 1.3.4.2 yamt * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 67 1.3.4.2 yamt * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 68 1.3.4.2 yamt * SUCH DAMAGE. 69 1.3.4.2 yamt * 70 1.3.4.2 yamt * FreeBSD: src/sys/i386/acpica/acpi_wakecode.S,v 1.1 2001/07/20 06:07:31 takawata Exp 71 1.3.4.2 yamt */ 72 1.3.4.2 yamt 73 1.3.4.2 yamt #define _LOCORE 74 1.3.4.2 yamt 75 1.3.4.2 yamt #include <machine/psl.h> 76 1.3.4.2 yamt #include <machine/segments.h> 77 1.3.4.2 yamt #include <machine/specialreg.h> 78 1.3.4.2 yamt 79 1.3.4.2 yamt #define ACPI_WAKEUP_ADDR 0x3000 80 1.3.4.2 yamt 81 1.3.4.2 yamt .text 82 1.3.4.2 yamt .code16 83 1.3.4.2 yamt .org 0 /* ACPI spec says: cs==(phys>>8), ip==(phys&0x000F) */ 84 1.3.4.2 yamt .globl wakeup_16 85 1.3.4.2 yamt wakeup_16: 86 1.3.4.2 yamt nop 87 1.3.4.2 yamt cli 88 1.3.4.2 yamt cld 89 1.3.4.2 yamt 90 1.3.4.2 yamt /* Set up segment registers for real mode */ 91 1.3.4.2 yamt movw %cs,%ax 92 1.3.4.2 yamt movw %ax,%ds 93 1.3.4.2 yamt movw %ax,%ss 94 1.3.4.2 yamt 95 1.3.4.2 yamt /* Small call stack */ 96 1.3.4.2 yamt mov $0x1000,%sp 97 1.3.4.2 yamt 98 1.3.4.2 yamt /* Clear flags */ 99 1.3.4.2 yamt pushl $0 100 1.3.4.2 yamt popfl 101 1.3.4.2 yamt 102 1.3.4.2 yamt /* Only beep on reset if machdep.acpi_beep_on_reset=1 */ 103 1.3.4.2 yamt cmpb $1,WAKEUP_beep_on_reset 104 1.3.4.2 yamt jne 1f 105 1.3.4.2 yamt movb $0xc0,%al 106 1.3.4.2 yamt outb %al,$0x42 107 1.3.4.2 yamt movb $0x04,%al 108 1.3.4.2 yamt outb %al,$0x42 109 1.3.4.2 yamt inb $0x61,%al 110 1.3.4.2 yamt orb $0x3,%al 111 1.3.4.2 yamt outb %al,$0x61 112 1.3.4.2 yamt 1: 113 1.3.4.2 yamt 114 1.3.4.2 yamt /* Only reset the VBIOS if machdep.acpi_vbios_reset=1 */ 115 1.3.4.2 yamt cmpb $1,WAKEUP_vbios_reset 116 1.3.4.2 yamt jne 1f 117 1.3.4.2 yamt 118 1.3.4.2 yamt /* Kick the VBIOS. */ 119 1.3.4.2 yamt lcall $0xc000,$3 120 1.3.4.2 yamt 121 1.3.4.2 yamt /* Reset registers in case the VBIOS changed them. */ 122 1.3.4.2 yamt movw %cs,%ax 123 1.3.4.2 yamt movw %ax,%ds 124 1.3.4.2 yamt movw %ax,%ss 125 1.3.4.2 yamt 1: 126 1.3.4.2 yamt 127 1.3.4.2 yamt /* Disable beep again if machdep.acpi_beep_on_reset=1 */ 128 1.3.4.2 yamt cmpb $1,WAKEUP_beep_on_reset 129 1.3.4.2 yamt jne 1f 130 1.3.4.2 yamt inb $0x61,%al 131 1.3.4.2 yamt andb $0xfc,%al 132 1.3.4.2 yamt outb %al,$0x61 133 1.3.4.2 yamt 1: 134 1.3.4.2 yamt 135 1.3.4.2 yamt /* Load temporary 32bit GDT */ 136 1.3.4.2 yamt data32 addr32 lgdt tmp_gdt 137 1.3.4.2 yamt 138 1.3.4.2 yamt /* Enable protected mode w/o paging */ 139 1.3.4.2 yamt mov %cr0,%eax 140 1.3.4.2 yamt orl $(CR0_PE),%eax 141 1.3.4.2 yamt mov %eax,%cr0 142 1.3.4.2 yamt 143 1.3.4.2 yamt wakeup_sw32: 144 1.3.4.2 yamt /* 145 1.3.4.2 yamt * Switch to protected mode by intersegmental jump. 146 1.3.4.2 yamt * Target and everything else has to compensate for the new origin 147 1.3.4.2 yamt * as this is using the flat memory model now. 148 1.3.4.2 yamt */ 149 1.3.4.2 yamt 150 1.3.4.2 yamt ljmpl $0x8,$wakeup_32 + ACPI_WAKEUP_ADDR 151 1.3.4.2 yamt 152 1.3.4.2 yamt .code32 153 1.3.4.2 yamt .align 16 154 1.3.4.2 yamt wakeup_32: 155 1.3.4.2 yamt /* 156 1.3.4.2 yamt * Switched to protected mode w/o paging 157 1.3.4.2 yamt */ 158 1.3.4.2 yamt 159 1.3.4.2 yamt nop 160 1.3.4.2 yamt /* Set up segment registers and initial stack for protected mode */ 161 1.3.4.2 yamt movw $0x10, %ax 162 1.3.4.2 yamt movw %ax,%ds 163 1.3.4.2 yamt movw %ax,%ss 164 1.3.4.2 yamt 165 1.3.4.2 yamt movl $(ACPI_WAKEUP_ADDR + 4096),%esp 166 1.3.4.2 yamt 167 1.3.4.2 yamt /* First, reset the PSL. */ 168 1.3.4.2 yamt pushl $PSL_MBO 169 1.3.4.2 yamt popfl 170 1.3.4.2 yamt 171 1.3.4.2 yamt /* Enable PAE and potentially PSE */ 172 1.3.4.2 yamt movl $(CR4_PAE|CR4_OSFXSR|CR4_OSXMMEXCPT|CR4_PSE),%eax 173 1.3.4.2 yamt movl %eax,%cr4 174 1.3.4.2 yamt 175 1.3.4.2 yamt /* Enable SYSCALL extension and Long Mode */ 176 1.3.4.2 yamt movl $MSR_EFER,%ecx 177 1.3.4.2 yamt rdmsr 178 1.3.4.2 yamt movl WAKEUP_msr_efer + ACPI_WAKEUP_ADDR,%eax 179 1.3.4.2 yamt wrmsr 180 1.3.4.2 yamt 181 1.3.4.2 yamt /* Load temporary PML4, code will switch to full PML4 later */ 182 1.3.4.2 yamt movl WAKEUP_r_cr3 + ACPI_WAKEUP_ADDR,%eax 183 1.3.4.2 yamt movl %eax,%cr3 184 1.3.4.2 yamt 185 1.3.4.2 yamt /* Enable paging */ 186 1.3.4.2 yamt movl %cr0,%eax 187 1.3.4.2 yamt orl $(CR0_PE|CR0_PG|CR0_NE|CR0_TS|CR0_MP|CR0_WP),%eax 188 1.3.4.2 yamt movl %eax,%cr0 189 1.3.4.2 yamt /* Flush prefetch queue */ 190 1.3.4.2 yamt jmp 1f 191 1.3.4.2 yamt 1: 192 1.3.4.2 yamt /* Switch to temporary 64bit GDT */ 193 1.3.4.2 yamt lgdt tmp_gdt64 + ACPI_WAKEUP_ADDR 194 1.3.4.2 yamt 195 1.3.4.2 yamt /* Switch to long mode using intersegmental jump. */ 196 1.3.4.2 yamt ljmp $0x8, $wakeup_64 + ACPI_WAKEUP_ADDR 197 1.3.4.2 yamt 198 1.3.4.2 yamt .code64 199 1.3.4.2 yamt wakeup_64: 200 1.3.4.2 yamt 201 1.3.4.2 yamt /* Reload data segment with default value */ 202 1.3.4.2 yamt movw $GSEL(GDATA_SEL, SEL_KPL),%ax 203 1.3.4.2 yamt movw %ax,%ds 204 1.3.4.2 yamt 205 1.3.4.2 yamt movq WAKEUP_curcpu + ACPI_WAKEUP_ADDR,%r8 206 1.3.4.2 yamt movq WAKEUP_restorecpu + ACPI_WAKEUP_ADDR,%rbx 207 1.3.4.2 yamt 208 1.3.4.2 yamt /* Continue with wakeup in the high-level wakeup code */ 209 1.3.4.2 yamt jmp *%rbx 210 1.3.4.2 yamt 211 1.3.4.2 yamt .align 8 212 1.3.4.2 yamt tmp_gdt: 213 1.3.4.2 yamt .word 0xffff 214 1.3.4.2 yamt .long tmp_gdtable + ACPI_WAKEUP_ADDR 215 1.3.4.2 yamt 216 1.3.4.2 yamt .align 8, 0 217 1.3.4.2 yamt tmp_gdtable: 218 1.3.4.2 yamt /* null */ 219 1.3.4.2 yamt .word 0, 0 220 1.3.4.2 yamt .byte 0, 0, 0, 0 221 1.3.4.2 yamt /* code */ 222 1.3.4.2 yamt .word 0xffff, 0 223 1.3.4.2 yamt .byte 0, 0x9f, 0xcf, 0 224 1.3.4.2 yamt /* data */ 225 1.3.4.2 yamt .word 0xffff, 0 226 1.3.4.2 yamt .byte 0, 0x93, 0xcf, 0 227 1.3.4.2 yamt 228 1.3.4.2 yamt tmp_gdt64: 229 1.3.4.2 yamt .word 0xffff 230 1.3.4.2 yamt .long tmp_gdtable64 + ACPI_WAKEUP_ADDR 231 1.3.4.2 yamt 232 1.3.4.2 yamt tmp_gdtable64: 233 1.3.4.2 yamt .quad 0x0000000000000000 234 1.3.4.2 yamt .quad 0x00af9a000000ffff 235 1.3.4.2 yamt .quad 0x00cf92000000ffff 236 1.3.4.2 yamt 237 1.3.4.2 yamt .align 16, 0 238 1.3.4.2 yamt .global WAKEUP_r_cr3 239 1.3.4.2 yamt WAKEUP_r_cr3: .quad 0 240 1.3.4.2 yamt 241 1.3.4.2 yamt .global WAKEUP_restorecpu 242 1.3.4.2 yamt WAKEUP_restorecpu: .quad 0 243 1.3.4.2 yamt 244 1.3.4.2 yamt .global WAKEUP_vbios_reset 245 1.3.4.2 yamt WAKEUP_vbios_reset: .byte 0 246 1.3.4.2 yamt .global WAKEUP_beep_on_reset 247 1.3.4.2 yamt WAKEUP_beep_on_reset: .byte 0 248 1.3.4.2 yamt 249 1.3.4.2 yamt .global WAKEUP_curcpu 250 1.3.4.2 yamt WAKEUP_curcpu: .quad 0 251 1.3.4.2 yamt .global WAKEUP_msr_efer 252 1.3.4.2 yamt WAKEUP_msr_efer: .long 0 253
Indexes created Thu Oct 02 14:10:14 GMT 2025