+++ /dev/null
-/*
- * Misc. kernel definitions
- * Copyright (c) 2001,2004 David H. Hovemeyer <daveho@cs.umd.edu>
- * $Revision: 1.1 $
- *
- * This is free software. You are permitted to use,
- * redistribute, and modify it as specified in the file "COPYING".
- */
-
-#ifndef GEEKOS_DEFS_H
-#define GEEKOS_DEFS_H
-
-
-
-
-/*
- * Kernel code and data segment selectors.
- * Keep these up to date with defs.asm.
- */
-#define KERNEL_CS (1<<3)
-#define KERNEL_DS (2<<3)
-
-
-/*
- * Address where kernel is loaded INITIALLY
- * we move it up in memory soon
- */
-#define KERNEL_START_ADDR 0x10000
-
-/*
- * Kernel and user privilege levels
- */
-#define KERNEL_PRIVILEGE 0
-#define USER_PRIVILEGE 3
-
-
-/*
- * Software interrupt for syscalls
- */
-#define SYSCALL_INT 0x90
-
-/*
- * The windows versions of gcc use slightly different
- * names for the bss begin and end symbols than the Linux version.
- */
-#if defined(GNU_WIN32)
-# define BSS_START _bss_start__
-# define BSS_END _bss_end__
-#else
-# define BSS_START __bss_start
-# define BSS_END end
-#endif
-
-/*
- * x86 has 4096 byte pages
- */
-#define PAGE_POWER 12
-#define PAGE_SIZE (1<<PAGE_POWER)
-#define PAGE_MASK (~(0xffffffff << PAGE_POWER))
-
-
-
-/* Ultimate Memory Layout
-
-TOP_OF_MEM:
- GDT (one page)
- TSS (one page)
- IDT (one page)
- KernelImage
- VMBootPackage
- rombios (2nd copy)
- vmxassist
- vgabios
- rombios (1st copy)
- PageList (varies - must be an integral number of pages)
- KernelHeap (varies - KERNEL_HEAP_SIZE; must be integral number of pages)
- KernelStack (one page)
- KernelThreadObject (one page)
-0+VM_SIZE:
- VM (including ISA hole)
- (KernelImage, GDT, and IDT start down here and are moved up)
- (VMBoot Package is copied down to the first MB to start the VM boot)
- (VMXAssist is used to provide real mode emulation for initial VM boot steps)
-0:
-*/
-
-// This is for a 1 GB Machine
-// The last address (+1) at which physical memory ends
-#define TOP_OF_MEM (0x40000000)
-// How much space to reserve for the VM
-#define VM_SIZE (0x20000000)
-// Where the VM starts in physical memory
-#define START_OF_VM (0x0)
-
-
-
-#define GDT_SIZE PAGE_SIZE
-#define TSS_SIZE PAGE_SIZE
-#define IDT_SIZE PAGE_SIZE
-#define KERNEL_HEAP_SIZE (256*PAGE_SIZE)
-#define KERNEL_STACK_SIZE PAGE_SIZE
-#define KERNEL_THREAD_OBJECT_SIZE PAGE_SIZE
-
-
-
-
-/*
- * * Keep these up to date with defs.asm.
- */
-#define GDT_LOCATION (TOP_OF_MEM-GDT_SIZE)
-#define TSS_LOCATION (GDT_LOCATION-TSS_SIZE)
-#define IDT_LOCATION (TSS_LOCATION-IDT_SIZE)
-
-
-#define FINAL_KERNEL_START (IDT_LOCATION-MAX_VMM)
-#define FINAL_KERNEL_END (FINAL_KERNEL_START+KERNEL_CORE_LENGTH-1)
-#define FINAL_BIOS_START (FINAL_KERNEL_START+KERNEL_CORE_LENGTH)
-#define FINAL_BIOS_END (FINAL_BIOS_START+BIOS_LENGTH-1)
-#define FINAL_VGA_BIOS_START (FINAL_BIOS_START+BIOS_LENGTH)
-#define FINAL_VGA_BIOS_END (FINAL_VGA_BIOS_START+VGA_BIOS_LENGTH-1)
-#define FINAL_VMXASSIST_START (FINAL_VGA_BIOS_START+VGA_BIOS_LENGTH)
-#define FINAL_VMXASSIST_END (FINAL_VMXASSIST_START+VMXASSIST_LENGTH-1)
-#define FINAL_BIOS2_START (FINAL_VMXASSIST_START+VMXASSIST_LENGTH)
-#define FINAL_BIOS2_END (FINAL_BIOS2_START+BIOS_LENGTH-1)
-#define FINAL_VMBOOTSTART (FINAL_BIOS_START)
-#define FINAL_VMBOOTEND (FINAL_BIOS2_END)
-
-#if (FINAL_VMBOOTEND>IDT_LOCATION)
-#error VMM_MAX is too small!
-#endif
-
-
-#define KERNEL_THREAD_OBJECT (START_OF_VM+VM_SIZE)
-#define KERNEL_STACK (KERNEL_THREAD_OBJECT+KERNEL_THREAD_OBJECT_SIZE)
-#define KERNEL_HEAP (KERNEL_STACK+KERNEL_STACK_SIZE)
-#define KERNEL_PAGELIST (KERNEL_HEAP+KERNEL_HEAP_SIZE)
-
-
-/*
- * PC memory map
- */
-#define ISA_HOLE_START 0x0A0000
-#define ISA_HOLE_END 0x100000
-
-
-#endif /* GEEKOS_DEFS_H */
