| acpi_wakecode.S (121743) | acpi_wakecode.S (121830) |
|---|---|
| 1/*- 2 * Copyright (c) 2001 Takanori Watanabe <takawata@jp.freebsd.org> 3 * Copyright (c) 2001 Mitsuru IWASAKI <iwasaki@jp.freebsd.org> 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: --- 12 unchanged lines hidden (view full) --- 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28#include <machine/asm.h> | 1/*- 2 * Copyright (c) 2001 Takanori Watanabe <takawata@jp.freebsd.org> 3 * Copyright (c) 2001 Mitsuru IWASAKI <iwasaki@jp.freebsd.org> 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: --- 12 unchanged lines hidden (view full) --- 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28#include <machine/asm.h> |
| 29__FBSDID("$FreeBSD: head/sys/i386/acpica/acpi_wakecode.S 121743 2003-10-30 16:14:55Z iwasaki $"); | 29__FBSDID("$FreeBSD: head/sys/i386/acpica/acpi_wakecode.S 121830 2003-11-01 00:18:29Z njl $"); |
| 30 31#define LOCORE 32 | 30 31#define LOCORE 32 |
| 33#include <machine/param.h> |
|
| 33#include <machine/specialreg.h> 34 35 .align 4 36 .code16 37wakeup_16: 38 nop 39 cli 40 | 34#include <machine/specialreg.h> 35 36 .align 4 37 .code16 38wakeup_16: 39 nop 40 cli 41 |
| 41 /* Set up segment registers for real mode */ | 42 /* 43 * Set up segment registers for real mode and a small stack for 44 * any calls we make. 45 */ |
| 42 movw %cs,%ax 43 movw %ax,%ds 44 movw %ax,%ss | 46 movw %cs,%ax 47 movw %ax,%ds 48 movw %ax,%ss |
| 45 46#ifndef ACPI_NO_RESET_VIDEO | 49 movw $PAGE_SIZE,%sp 50 51 /* Re-initialize video BIOS if the reset_video tunable is set. */ 52 cmp $1,reset_video 53 je wakeup_16_gdt 54 lcall $0xc000,$3 55 |
| 47 /* | 56 /* |
| 48 * Re-initialize video BIOS. Restore DS and SS from CS in 49 * case the BIOS modified them. | 57 * Set up segment registers for real mode again in case the 58 * previous BIOS call clobbers them. |
| 50 */ | 59 */ |
| 51 cmp $1, no_reset_video 52 je wakeup_16_gdt 53 lcall $0xc000, $3 54 movw %cs, %ax 55 movw %ax, %ds 56 movw %ax, %ss 57#endif | 60 movw %cs,%ax 61 movw %ax,%ds 62 movw %ax,%ss |
| 58 59wakeup_16_gdt: 60 /* Load GDT for real mode */ 61 lgdt physical_gdt 62 63 /* Restore CR2, CR3 and CR4 */ 64 mov previous_cr2,%eax 65 mov %eax,%cr2 --- 143 unchanged lines hidden (view full) --- 209 210/* used in real mode */ 211physical_gdt: .word 0 212 .long 0 213physical_esp: .long 0 214previous_cr2: .long 0 215previous_cr3: .long 0 216previous_cr4: .long 0 | 63 64wakeup_16_gdt: 65 /* Load GDT for real mode */ 66 lgdt physical_gdt 67 68 /* Restore CR2, CR3 and CR4 */ 69 mov previous_cr2,%eax 70 mov %eax,%cr2 --- 143 unchanged lines hidden (view full) --- 214 215/* used in real mode */ 216physical_gdt: .word 0 217 .long 0 218physical_esp: .long 0 219previous_cr2: .long 0 220previous_cr3: .long 0 221previous_cr4: .long 0 |
| 217no_reset_video: .long 0 | 222reset_video: .long 0 |
| 218 219/* transfer from real mode to protected mode */ 220previous_cr0: .long 0 221previous_tr: .word 0 222previous_gdt: .word 0 223 .long 0 224previous_ldt: .word 0 225previous_idt: .word 0 226 .long 0 227where_to_recover: .long 0 228previous_ds: .word 0 229previous_es: .word 0 230previous_fs: .word 0 231previous_gs: .word 0 232previous_ss: .word 0 233dummy: .word 0 | 223 224/* transfer from real mode to protected mode */ 225previous_cr0: .long 0 226previous_tr: .word 0 227previous_gdt: .word 0 228 .long 0 229previous_ldt: .word 0 230previous_idt: .word 0 231 .long 0 232where_to_recover: .long 0 233previous_ds: .word 0 234previous_es: .word 0 235previous_fs: .word 0 236previous_gs: .word 0 237previous_ss: .word 0 238dummy: .word 0 |