organised files; switched to recursive make

1 files changed, 0 insertions, 181 deletions

diff --git a/kernel/boot.S b/kernel/boot.S
deleted file mode 100644
index ee35eeb..0000000
--- a/kernel/boot.S
+++ /dev/null
@@ -1,181 +0,0 @@
-.global _start
-.extern begin_long_mode
-
-.section .text
-.code32
-
-_start:
-	cli
-	mov $stack_top, %esp
-	pushl $0
-	pushl %eax
-	pushl $0
-	pushl %ebx
-
-	call check_multiboot
-	call check_cpuid
-	call check_long_mode
-
-	call setup_page_tables
-	call enable_paging
-
-	lgdt gdt_pointer
-	ljmp $0x08, $begin_long_mode
-
-
-check_multiboot:
-	cmp $0x36d76289, %eax
-	jne no_multiboot
-
-	ret
-
-check_cpuid:
-	pushfl
-	pop %eax
-	mov %eax, %ecx
-	xor $1<<21, %eax
-	push %eax
-	popfl
-	pushfl
-	pop %eax
-	push %ecx
-	popfl
-	cmp %eax, %ecx
-	je no_cpuid
-
-	ret
-
-check_long_mode:
-	mov $0x80000000, %eax
-	cpuid
-	cmp $0x80000001, %eax
-	jb no_long_mode
-
-	mov $0x80000001, %eax
-	cpuid
-	test $1<<29, %edx
-	jz no_long_mode
-
-	ret
-
-setup_page_tables:
-	mov $page_table_lvl3, %eax
-	or $0x3, %eax
-	mov %eax, page_table_lvl4
-
-	mov $page_table_lvl2, %eax
-	or $0x3, %eax
-	mov %eax, page_table_lvl3
-
-	mov $page_table_lvl2 + 4096, %eax
-	or $0x3, %eax
-	mov %eax, page_table_lvl3+8
-
-	mov $page_table_lvl2 + 8192, %eax
-	or $0x3, %eax
-	mov %eax, page_table_lvl3+16
-
-	mov $page_table_lvl2 + 12288, %eax
-	or $0x3, %eax
-	mov %eax, page_table_lvl3+24
-
-
-	movl $0, %ecx
-1:
-	movl $0x200000, %eax
-	mul %ecx
-	or $0b10000011, %eax
-	movl $page_table_lvl2, %edx
-	leal (%edx, %ecx, 8), %edx
-	movl %eax, (%edx)
-	inc %ecx
-	cmp $512*4, %ecx
-	jne 1b
-
-	ret
-
-enable_paging:
-	// enable PAE
-	mov %cr4, %edx
-	or $1<<5 ,%edx
-	mov %edx, %cr4
-
-	// set LME (long mode enable)
-	mov $0xC0000080, %ecx
-	rdmsr
-	or $1<<8, %eax
-	wrmsr
-
-	// page_table_lvl4
-	mov $page_table_lvl4, %eax
-	mov %eax, %cr3
-
-	// enable paging (+ protected mode if not already enabled)
-	mov %cr0, %eax
-	or $1<<31 + 1<<0, %eax
-	mov %eax, %cr0
-
-	ret
-
-no_multiboot:
-	hlt
-
-no_cpuid:
-	hlt
-
-no_long_mode:
-	hlt
-
-
-.section .bss
-.align 4096
-
-// stack
-stack_bottom:
-	.skip 4096*4
-stack_top:
-
-// page tables
-page_table_lvl4:
-	.skip 4096
-page_table_lvl3:
-	.skip 4096
-// map first 4GB
-page_table_lvl2:
-	.skip 4096*4
-
-// Access bits
-.section .rodata
-.set PRESENT,		1 << 7
-.set NOT_SYS,		1 << 4
-.set EXEC,		1 << 3
-.set DC,		1 << 2
-.set RW,		1 << 1
-.set ACCESSED,		1 << 0
-
-// Flags bits
-.set GRAN_4K,		1 << 7
-.set SZ_32,		1 << 6
-.set LONG_MODE,		1 << 5
-
-gdt:
-gdt_null = . - gdt
-	.quad 0
-gdt_code = . - gdt
-	.long 0xFFFF				// Limit & Base (low, bits 0-15)
-	.byte 0					// Base (mid, bits 16-23)
-	.byte PRESENT | NOT_SYS | EXEC | RW	// Access
-	.byte GRAN_4K | LONG_MODE | 0xF		// Flags & Limit (high, bits 16-19)
-	.byte 0					// Base (high, bits 24-31)
-gdt_data = . - gdt
-	.long 0xFFFF
-	.byte 0
-	.byte PRESENT | NOT_SYS | RW
-	.byte GRAN_4K | SZ_32 | 0xF
-	.byte 0
-gdt_tss = . - gdt
-	.long 0x00000068
-	.long 0x00CF8900
-gdt_pointer:
-	.word . - gdt - 1
-	.quad gdt