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Beginnings of APM support: we now connect to the APM BIOS in 32 bit protected mode.

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We don't do anything with it yet, though, so the BIOS will probably ignore us since
we are supposed to poll for events.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@15900 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Axel Dörfler
2006-01-10 22:54:36 +00:00
parent 5143d99bb0
commit ba61df6d0b
7 changed files with 151 additions and 6 deletions
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headers/private/kernel/arch/x86/apm.h
+21
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@@ -0,0 +1,21 @@
#ifndef KERNEL_APM_H
#define KERNEL_APM_H
#include <SupportDefs.h>
typedef struct apm_info {
uint16 version;
uint16 flags;
uint16 code32_segment_base;
uint32 code32_segment_offset;
uint16 code32_segment_length;
uint16 code16_segment_base;
uint16 code16_segment_length;
uint16 data_segment_base;
uint16 data_segment_length;
} apm_info;
#endif /* KERNEL_APM_H */
headers/private/kernel/arch/x86/descriptors.h
+11 -4
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@@ -1,7 +1,10 @@
/*
** Copyright 2001-2002, Travis Geiselbrecht. All rights reserved.
** Distributed under the terms of the NewOS License.
*/
* Copyright 2002-2006, Axel Dörfler, [email protected]. All rights reserved.
* Distributed under the terms of the MIT License.
*
* Copyright 2001-2002, Travis Geiselbrecht. All rights reserved.
* Distributed under the terms of the NewOS License.
*/
#ifndef _KERNEL_ARCH_x86_DESCRIPTORS_H
#define _KERNEL_ARCH_x86_DESCRIPTORS_H
@@ -12,14 +15,18 @@
#define USER_CODE_SEG 0x1b
#define USER_DATA_SEG 0x23
#define APM_CODE32_SEGMENT 0x28
#define APM_CODE16_SEGMENT 0x30
#define APM_DATA_SEGMENT 0x38
#ifndef _ASSEMBLER
// this file can also be included from assembler as well
// (and is in arch_interrupts.S)
#define DOUBLE_FAULT_TSS_BASE_SEGMENT 5
#define DOUBLE_FAULT_TSS_BASE_SEGMENT 8
#define TSS_BASE_SEGMENT (DOUBLE_FAULT_TSS_BASE_SEGMENT + smp_get_num_cpus())
#define TLS_BASE_SEGMENT (TSS_BASE_SEGMENT + smp_get_num_cpus())
#define APM_BASE_SEGMENT (TLS_BASE_SEGMENT + smp_get_num_cpus())
// defines entries in the GDT/LDT
headers/private/kernel/boot/platform/bios_ia32/platform_kernel_args.h
+5 -1
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@@ -1,5 +1,5 @@
/*
* Copyright 2003-2004, Axel Dörfler, [email protected].
* Copyright 2003-2006, Axel Dörfler, [email protected].
* Distributed under the terms of the MIT License.
*/
#ifndef KERNEL_BOOT_PLATFORM_BIOS_IA32_KERNEL_ARGS_H
@@ -9,6 +9,8 @@
# error This file is included from <boot/kernel_args.h> only
#endif
#include <apm.h>
#include <bios_drive.h>
@@ -25,6 +27,8 @@ typedef struct {
uint16 boot_drive_number;
bios_drive *drives; // this does not contain the boot drive
apm_info apm;
} platform_kernel_args;
#endif /* KERNEL_BOOT_PLATFORM_BIOS_IA32_KERNEL_ARGS_H */