stage2.h

来自「newos is new operation system」· C头文件 代码 · 共 49 行

/*
** Copyright 2001-2002, Travis Geiselbrecht. All rights reserved.
** Distributed under the terms of the NewOS License.
*/
#ifndef _NEWOS_KERNEL_BOOT_ARCH_I386_STAGE2_H
#define _NEWOS_KERNEL_BOOT_ARCH_I386_STAGE2_H

#include <boot/stage2_struct.h>
#include <newos/compiler.h>

#define MAX_BOOT_PTABLES 4

#define IDT_LIMIT 0x800
#define GDT_LIMIT 0x800

struct gdt_idt_descr {
	unsigned short a;
	unsigned int *b;
} _PACKED;


// kernel args
typedef struct {
	// architecture specific
	int supports_rdtsc;
	unsigned int system_time_cv_factor;
	unsigned int phys_pgdir;
	unsigned int vir_pgdir;
	unsigned int num_pgtables;
	unsigned int pgtables[MAX_BOOT_PTABLES];
	unsigned int phys_idt;
	unsigned int vir_idt;
	unsigned int phys_gdt;
	unsigned int vir_gdt;
	unsigned int page_hole;
	// smp stuff
	unsigned int apic_time_cv_factor; // apic ticks per second
	unsigned int apic_phys;
	unsigned int *apic;
	unsigned int ioapic_phys;
	unsigned int *ioapic;
	unsigned int cpu_apic_id[_MAX_CPUS];
	unsigned int cpu_os_id[_MAX_CPUS];
	unsigned int cpu_apic_version[_MAX_CPUS];
} arch_kernel_args;

#endif