Adding start of x86_64 port

diff --git a/Kernel/arch/x86_64/Makefile b/Kernel/arch/x86_64/Makefile
new file mode 100644 (file)
index 0000000..3820a69
--- /dev/null
+++ b/Kernel/arch/x86_64/Makefile
@@ -0,0 +1,28 @@
+#
+# Acess2 Kernel
+# i386 Architecture Makefile
+# arch/i386/Makefile
+
+# Assuming build machine is 32-bit ELF
+#CC = gcc
+#AS = nasm
+#LD = ld
+#OBJDUMP = objdump
+
+CPPFLAGS       =
+CFLAGS         =
+ASFLAGS                = -f elf
+
+ifeq ($(ARCH),amd64)
+       ASFLAGS += -D AMD64=1
+       CPPFLAGS += -DAMD64=1
+else
+       ifeq ($(ARCH),ia64)
+               ASFLAGS += -D AMD64=0 -D IA64=1
+               CPPFLAGS += -DAMD64=0 -DIA64=1
+       endif
+endif
+       
+
+A_OBJ  = start32.ao start64.ao
+A_OBJ += main.o lib.o

diff --git a/Kernel/arch/x86_64/include/arch.h b/Kernel/arch/x86_64/include/arch.h
new file mode 100644 (file)
index 0000000..d812a51
--- /dev/null
+++ b/Kernel/arch/x86_64/include/arch.h
@@ -0,0 +1,33 @@
+/*
+ * Acess2 x86-64 Architecure Module
+ * - By John Hodge (thePowersGang)
+ */
+#ifndef _ARCH_H_
+#define _ARCH_H_
+
+#define KERNEL_BASE    0xFFFF8000##00000000
+
+// === Core Types ===
+typedef signed char    Sint8;
+typedef unsigned char  Uint8;
+typedef signed short   Sint16;
+typedef unsigned short Uint16;
+typedef signed long    Sint32;
+typedef unsigned long  Uint32;
+typedef signed long long       Sint64;
+typedef unsigned long long     Uint64;
+
+typedef Uint64 Uint;
+typedef Uint64 tPAddr;
+typedef Uint64 tVAddr;
+
+//typedef unsigned int size_t;
+typedef Uint64 size_t;
+
+typedef int    tSpinlock;
+
+#define LOCK(_ptr)
+#define RELEASE(_ptr)
+
+#endif
+

diff --git a/Kernel/arch/x86_64/include/mm_virt.h b/Kernel/arch/x86_64/include/mm_virt.h
new file mode 100644 (file)
index 0000000..2dd28dd
--- /dev/null
+++ b/Kernel/arch/x86_64/include/mm_virt.h
@@ -0,0 +1,27 @@
+/*
+ * Acess2 x86_64 Architecture Code
+ *
+ * This file is published under the terms of the Acess Licence.
+ * See the file COPYING for more details
+ *
+ * vmem.h - Virtual Memory Functions & Definitions
+ */
+#ifndef _VMEM_H_
+#define _VMEM_H_
+
+// === Memory Location Definitions ===
+/*
+ * Userland - Lower Half
+ * Kernel land - Upper Half
+ * 
+ * 0xFFFF8000 00000000 - 0xFFFFFFFF FFFFFFFF   2**47   Kernel Range
+ *       8000 00000000 -       8000 7FFFFFFF   2 GiB   Identity Map
+ *       8000 80000000 -       8001 00000000   2 GiB   Kernel Heap
+ *       9000 00000000 0       9800 00000000   cbf     Module Space
+ */
+
+#define        KERNEL_BASE     0xFFF8000##00000000
+#define MM_KHEAP_BASE  (KERNEL_BASE|0x80000000)
+#define MM_KHEAP_MAX   (KERNEL_BASE|0x1##00000000)
+
+#endif

diff --git a/Kernel/arch/x86_64/lib.c b/Kernel/arch/x86_64/lib.c
new file mode 100644 (file)
index 0000000..e69de29

diff --git a/Kernel/arch/x86_64/main.c b/Kernel/arch/x86_64/main.c
new file mode 100644 (file)
index 0000000..e69de29

diff --git a/Kernel/arch/x86_64/start32.asm b/Kernel/arch/x86_64/start32.asm
new file mode 100644 (file)
index 0000000..eada7b9
--- /dev/null
+++ b/Kernel/arch/x86_64/start32.asm
@@ -0,0 +1,83 @@
+
+[BITS 32]
+
+[section .multiboot]
+mboot:
+       MULTIBOOT_MAGIC equ     0x1BADB002
+       dd      MULTIBOOT_MAGIC
+
+[extern start64]
+
+[section .text]
+[global start]
+start:
+       ; Enable PAE
+       mov eax, cr4
+       or eax, 0x80|0x20
+       mov cr4, eax
+
+       ; Load PDP4
+       mov eax, gInitialPML4
+       mov cr3, eax
+
+       ; Enable long/compatability mode
+       mov ecx, 0xC0000080
+       rdmsr
+       or ax, 0x100
+       wrmsr
+
+       ; Enable paging
+       mov eax, cr0
+       or eax, 0x80000000
+       mov cr0, eax
+
+       ; Load GDT
+       lgdt [gGDTPtr]
+       mov ax, 0x10
+       mov ss, ax
+       mov ds, ax
+       mov es, ax
+       mov fs, ax
+       mov gs, ax
+
+       jmp 0x08:start64
+
+[section .data]
+gGDT:
+       dd      0,0
+       dd      0x00000000, 0x00209800  ; 64-bit Code
+       dd      0x00000000, 0x00009000  ; 64-bit Data
+gGDTPtr:
+       dw      $-gGDT-1
+       dd      gGDT
+       dd      0
+
+[section .padata]
+gInitialPML4:  ; 256 TiB
+       dd      gInitialPDP + 3, 0      ; Identity Map Low 4Mb
+       times 256-1 dq  0
+       dd      gInitialPDP + 3, 0      ; Identity Map Low 4Mb to kernel base
+       times 256-1 dq 0
+
+gInitialPDP:   ; 512 GiB
+       dd      gInitialPD + 3, 0
+       times 511 dq    0
+
+gInitialPD:    ; 1 GiB
+       dd      gInitialPT1 + 3, 0
+       dd      gInitialPT2 + 3, 0
+
+gInitialPT1:   ; 2 MiB
+       %assign i 1
+       %rep 512
+       dq      i*4096+3
+       %assign i i+1
+       %endrep
+gInitialPT2:   ; 2 MiB
+       %assign i 512
+       %rep 512
+       dq      i*4096+3
+       %assign i i+1
+       %endrep
+
+

diff --git a/Kernel/arch/x86_64/start64.asm b/Kernel/arch/x86_64/start64.asm
new file mode 100644 (file)
index 0000000..e69de29