todo MB2MemoryMapper.cpp

Architecture/amd64/Bootstrap/Multiboot2/Detection.asm

@@ -16,7 +16,7 @@ DetectCPUID:
     jz .NoCPUID
     ret
 .NoCPUID:
-    mov word [0xb8F00], 0xF00F ; .
+    ; mov word [0xb8F00], 0xF00F ; .
 .Loop:
     cli
     hlt
@@ -34,7 +34,7 @@ Detect64Bit:
     jz .NoLongMode
     ret
 .NoLongMode:
-    mov word [0xb8F00], 0xF00A ; .
+    ; mov word [0xb8F00], 0xF00A ; .
 .Loop:
     cli
     hlt

Architecture/amd64/Bootstrap/Multiboot2/Entry.asm

@@ -29,7 +29,7 @@ MB2_HeaderInfo:
 section .bootstrap.text
 MB2_start:
 	cli
-	mov word [0xb8F00], 0x072E ; .
+	; mov word [0xb8F00], 0x072E ; .
     mov [MB2_HeaderMagic], eax
     mov [MB2_HeaderInfo], ebx
 
@@ -37,7 +37,7 @@ MB2_start:
 	call DetectCPUID
 	call Detect64Bit
 
-	mov word [0xb8F02], 0x072E ; .
+	; mov word [0xb8F02], 0x072E ; .
 
 	mov ecx, cr0
 	and ecx, 0x7fffffff ; Clear PG
@@ -56,7 +56,7 @@ MB2_start:
 	mov edi, BootPageTable
 	mov cr3, edi
 
-	mov word [0xb8F04], 0x072E ; .
+	; mov word [0xb8F04], 0x072E ; .
 
 	; Enable long mode
 	mov ecx, 0xC0000080 ; EFER
@@ -84,7 +84,7 @@ MB2_start:
 [bits 64]
 HigherHalfStart:
 	cli
-	mov word [0xb8F06], 0x072E ; .
+	; mov word [0xb8F06], 0x072E ; .
 	call UpdatePageTable64
 
 	; Load the new page table
@@ -98,7 +98,7 @@ HigherHalfStart:
 	mov gs, ax
 	mov ss, ax
 
-	mov word [0xb8F08], 0x072E ; .
+	; mov word [0xb8F08], 0x072E ; .
 	mov rsp, (KernelStack + KERNEL_STACK_SIZE)
 	mov rbp, (KernelStack + KERNEL_STACK_SIZE)
 

Architecture/amd64/Bootstrap/Multiboot2/Header.asm

@@ -1,3 +1,5 @@
+extern MB2_start
+
 [bits 32]
 section .multiboot2
 align 4096
@@ -34,6 +36,22 @@ MB2_INFO_REQUEST_TAG_START:
     dd 21 ; Load Base Address
 MB2_INFO_REQUEST_TAG_END:
 align 8
+MB2_ENTRY_TAG:        
+    dw 3
+    dw 0
+    dd MB2_ENTRY_TAG_END - MB2_ENTRY_TAG
+    dd MB2_start
+MB2_ENTRY_TAG_END:
+align 8
+MB2_FRAMEBUFFER_TAG_START:
+    dw 5
+    dw 1
+    dd MB2_FRAMEBUFFER_TAG_END - MB2_FRAMEBUFFER_TAG_START
+    dd 1280 ; Width
+    dd 720 ; Height
+    dd 32 ; Depth
+MB2_FRAMEBUFFER_TAG_END:
+align 8
 MB2_TAG_START:
     dw 0
     dw 0

Architecture/amd64/Bootstrap/Multiboot2/MB2MemoryMapper.cpp

@@ -259,6 +259,10 @@ __always_inline inline SafeFunction NIF void Map(void *VirtualAddress, void *Phy
 
 EXTERNC __attribute__((section(".bootstrap.text"))) SafeFunction NIF __attribute__((section(".bootstrap.text"))) void UpdatePageTable64()
 {
+    /*
+    TODO: this code corrupts the page table
+    */
+
     BPTable = (PageTable4 *)BootPageTable;
 
     // for (size_t i = 0; i < 0x10000000; i += 0x1000)

Architecture/amd64/Bootstrap/Multiboot2/PageTable.asm

@@ -1,7 +1,7 @@
-PAGE_TABLE_SIZE equ 0x4 ; 1GB
+PAGE_TABLE_SIZE equ 0x8 ; 2GB
 [bits 32]
 
-section .bootstrap.data
+section .bootstrap.bss
 align 0x1000
 global BootPageTable
 BootPageTable:

Architecture/amd64/linker.ld

@@ -4,7 +4,7 @@ OUTPUT_ARCH(i386:x86-64)
 KERNEL_LMA = 16M;
 KERNEL_VMA = 0xFFFFFFFF80000000;
 
-ENTRY(MB2_start)
+ENTRY(_start)
 
 SECTIONS
 {