paging
This commit is contained in:
Tyler Murphy
parent
513b9b3199
commit
e6bec1afcd
11 changed files with 134 additions and 76 deletions
|
|
@ -1,31 +1,40 @@
|
|||
ENTRY(start)
|
||||
|
||||
SECTIONS {
|
||||
. = 1M;
|
||||
|
||||
. = 0x00100000;
|
||||
|
||||
kernel_start = .;
|
||||
|
||||
.multiboot.data : {
|
||||
*(.multiboot.data)
|
||||
}
|
||||
|
||||
.multiboot.text : {
|
||||
*(.multiboot.text)
|
||||
}
|
||||
|
||||
. += 0xC0000000;
|
||||
|
||||
.boot BLOCK(4K) : ALIGN(4K)
|
||||
{
|
||||
*(.multiboot)
|
||||
}
|
||||
|
||||
.text BLOCK(4K) : ALIGN(4K)
|
||||
.text ALIGN (4K) : AT (ADDR (.text) - 0xC0000000)
|
||||
{
|
||||
*(.text)
|
||||
}
|
||||
|
||||
.rodata BLOCK(4K) : ALIGN(4K)
|
||||
.rodata ALIGN (4K) : AT (ADDR (.rodata) - 0xC0000000)
|
||||
{
|
||||
*(.rodata)
|
||||
}
|
||||
|
||||
|
||||
.bss BLOCK(4K) : ALIGN(4K)
|
||||
.data ALIGN (4K) : AT (ADDR (.data) - 0xC0000000)
|
||||
{
|
||||
*(.bss)
|
||||
*(.data)
|
||||
}
|
||||
|
||||
.bss ALIGN (4K) : AT (ADDR (.bss) - 0xC0000000)
|
||||
{
|
||||
*(COMMON)
|
||||
*(.bss)
|
||||
*(.bootstrap_stack)
|
||||
}
|
||||
|
||||
kernel_end = .;
|
||||
|
||||
}
|
||||
|
|
|
|||
|
|
@ -9,7 +9,6 @@
|
|||
static struct BootInfo info;
|
||||
|
||||
static void read_cmdline(struct BootTag *tag, char *data, uint8_t len) {
|
||||
debugk("Found cmdline");
|
||||
if (len >= CMDLINE_MAX)
|
||||
panic("multiboot2 cmd line to long\nmax is %d but was provided %d\n",
|
||||
CMDLINE_MAX, len);
|
||||
|
|
@ -18,13 +17,11 @@ static void read_cmdline(struct BootTag *tag, char *data, uint8_t len) {
|
|||
}
|
||||
|
||||
static void read_memorymap(struct BootTag *tag, uint32_t *data) {
|
||||
debugk("Found memorymap");
|
||||
tag->data.memory_map = (struct MemoryMap *) data;
|
||||
info.tags[iD_MEMORYMAP] = *tag;
|
||||
}
|
||||
|
||||
static void read_rsdp(struct BootTag *tag, char *data) {
|
||||
debugk("Found RSDP");
|
||||
tag->data.rsdp = (struct RootSystemDescriptionPointer *) data;
|
||||
info.tags[ID_RSDP] = *tag;
|
||||
}
|
||||
|
|
@ -60,8 +57,6 @@ static uint32_t *read_tag(uint32_t *data) {
|
|||
|
||||
void load_boot_info(void* boot_info) {
|
||||
|
||||
debugk("Reading multiboot info");
|
||||
|
||||
memset(&info, 0, sizeof(boot_info));
|
||||
|
||||
uint32_t* data = (uint32_t*) boot_info;
|
||||
|
|
@ -72,7 +67,6 @@ void load_boot_info(void* boot_info) {
|
|||
data = read_tag(data);
|
||||
}
|
||||
|
||||
succek("Loaded multiboot info");
|
||||
}
|
||||
|
||||
bool get_boot_tag(enum BootTagID id, struct BootTag **tag) {
|
||||
|
|
|
|||
|
|
@ -2,19 +2,17 @@
|
|||
|
||||
#include "print.h"
|
||||
|
||||
extern int sse_init (void);
|
||||
extern int fpu_init (void);
|
||||
extern uint8_t sse_init (void);
|
||||
extern uint8_t fpu_init (void);
|
||||
|
||||
void init_registers (void) {
|
||||
if (!sse_init()) {
|
||||
debugk("Loaded SIMD");
|
||||
} else {
|
||||
errork("SIMD not supported");
|
||||
}
|
||||
uint8_t init_registers (uint8_t reg) {
|
||||
uint8_t res = 0;
|
||||
|
||||
if (!fpu_init()) {
|
||||
debugk("Loaded FPU");
|
||||
} else {
|
||||
errork("FPU not supported");
|
||||
}
|
||||
if (reg & SSE_REG)
|
||||
res |= ~sse_init() & SSE_REG;
|
||||
|
||||
if (reg & FPU_REG)
|
||||
res |= ~fpu_init() & FPU_REG;
|
||||
|
||||
return res;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -1,3 +1,8 @@
|
|||
#pragma once
|
||||
|
||||
void init_registers (void);
|
||||
#include <stdint.h>
|
||||
|
||||
#define SSE_REG 0x01
|
||||
#define FPU_REG 0x02
|
||||
|
||||
uint8_t init_registers (uint8_t reg);
|
||||
|
|
|
|||
|
|
@ -48,8 +48,6 @@ void ps2ctrl_set_port2(void) {
|
|||
|
||||
void ps2ctrl_init(void) {
|
||||
|
||||
debugk("Loading PS/2 Controller");
|
||||
|
||||
is_init = false;
|
||||
|
||||
pic_mask(1); // keyboard
|
||||
|
|
@ -61,8 +59,7 @@ void ps2ctrl_init(void) {
|
|||
ps2ctrl_out_cmd(0xAA);
|
||||
uint8_t response = ps2ctrl_in();
|
||||
if(response != 0x55) {
|
||||
errork("PS/2 controller failed to initialize");
|
||||
return;
|
||||
panic("PS/2 controller failed to initialize");
|
||||
}
|
||||
|
||||
// set config
|
||||
|
|
@ -80,8 +77,7 @@ void ps2ctrl_init(void) {
|
|||
ps2ctrl_out_cmd(0xA9);
|
||||
response = ps2ctrl_in();
|
||||
if (response == 0x01) {
|
||||
errork("PS/2 port 2 not supported");
|
||||
return;
|
||||
panic("PS/2 port 2 not supported");
|
||||
}
|
||||
|
||||
ps2ctrl_out_cmd(0xA8);
|
||||
|
|
@ -90,8 +86,6 @@ void ps2ctrl_init(void) {
|
|||
|
||||
pic_unmask(1);
|
||||
pic_unmask(12);
|
||||
|
||||
succek("Loaded PS/2 Controller");
|
||||
}
|
||||
|
||||
bool ps2ctrl_is_init(void) {
|
||||
|
|
|
|||
|
|
@ -59,8 +59,6 @@ static bool state_ext = false;
|
|||
|
||||
void ps2kb_init(void) {
|
||||
|
||||
debugk("Loading PS/2 Keyboard");
|
||||
|
||||
is_init = false;
|
||||
pic_mask(1);
|
||||
|
||||
|
|
@ -69,24 +67,22 @@ void ps2kb_init(void) {
|
|||
ps2ctrl_out_data(0xFF);
|
||||
result = ps2ctrl_in();
|
||||
if(result != 0xFA) {
|
||||
errork("Failed to reset PS/2 keyboard: expected 0xFA, got 0x%X\n", result);
|
||||
panic("Failed to reset PS/2 keyboard: expected 0xFA, got 0x%X\n", result);
|
||||
return;
|
||||
}
|
||||
result = ps2ctrl_in();
|
||||
if(result != 0xAA) {
|
||||
errork("Failed to reset PS/2 keyboard: expected 0xAA, got 0x%X\n", result);
|
||||
panic("Failed to reset PS/2 keyboard: expected 0xAA, got 0x%X\n", result);
|
||||
return;
|
||||
}
|
||||
|
||||
ps2ctrl_out_data(0xF4);
|
||||
result = ps2ctrl_in();
|
||||
if(result != 0xFA) {
|
||||
errork("Failed to enable PS/2 keyboard: expected 0xFA, got 0x%X\n", result);
|
||||
panic("Failed to enable PS/2 keyboard: expected 0xFA, got 0x%X\n", result);
|
||||
return;
|
||||
}
|
||||
|
||||
succek("PS/2 Keyboard has has been loaded");
|
||||
|
||||
pic_unmask(1);
|
||||
is_init = true;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -15,8 +15,6 @@ static uint8_t first_b, second_b, third_b;
|
|||
|
||||
void ps2mouse_init(void) {
|
||||
|
||||
debugk("Loading PS/2 Mouse");
|
||||
|
||||
is_init = false;
|
||||
pic_mask(12);
|
||||
|
||||
|
|
@ -26,12 +24,12 @@ void ps2mouse_init(void) {
|
|||
ps2ctrl_out_data(0xFF);
|
||||
result = ps2ctrl_in();
|
||||
if (result != 0xFA) {
|
||||
errork("Failed to reset PS/2 mouse: expected 0xFA, got 0x%X", result);
|
||||
panic("Failed to reset PS/2 mouse: expected 0xFA, got 0x%X", result);
|
||||
return;
|
||||
}
|
||||
result = ps2ctrl_in();
|
||||
if (result != 0xAA) {
|
||||
errork("Failed to reset PS/2 mouse: expected 0xAA, got 0x%X", result);
|
||||
panic("Failed to reset PS/2 mouse: expected 0xAA, got 0x%X", result);
|
||||
return;
|
||||
}
|
||||
|
||||
|
|
@ -40,8 +38,6 @@ void ps2mouse_init(void) {
|
|||
|
||||
pic_unmask(12);
|
||||
is_init = true;
|
||||
|
||||
succek("PS/2 Mouse has has been loaded");
|
||||
}
|
||||
|
||||
static uint8_t packet_num = 0;
|
||||
|
|
|
|||
|
|
@ -12,12 +12,18 @@
|
|||
|
||||
#include <print.h>
|
||||
#include <math.h>
|
||||
#include <stdint.h>
|
||||
#include <stdlib.h>
|
||||
#include <sys.h>
|
||||
|
||||
static double x = 0, y = 0;
|
||||
|
||||
void kernel_main(void* boot_info) {
|
||||
void kernel_boot(void *boot_info) {
|
||||
(void)boot_info;
|
||||
}
|
||||
|
||||
|
||||
void kernel_main(void) {
|
||||
|
||||
term_init();
|
||||
cursor_enable();
|
||||
|
|
@ -28,16 +34,16 @@ void kernel_main(void* boot_info) {
|
|||
idt_init();
|
||||
pic_remap(PIC_REMAP_OFFSET);
|
||||
|
||||
load_boot_info(boot_info);
|
||||
acpi_init();
|
||||
// load_boot_info(boot_info);
|
||||
// acpi_init();
|
||||
|
||||
memory_init();
|
||||
// memory_init();
|
||||
|
||||
ps2ctrl_init();
|
||||
ps2kb_init();
|
||||
ps2mouse_init();
|
||||
|
||||
init_registers();
|
||||
init_registers(FPU_REG | SSE_REG);
|
||||
|
||||
while(1) {
|
||||
int_wait();
|
||||
|
|
|
|||
|
|
@ -20,7 +20,7 @@ void _panic_impl(char* msg, int line, char* file, ...) {
|
|||
vprintk(msg, args);
|
||||
if (!term_newline()) putchar('\n');
|
||||
printk("\nin %s at line %d\n", file, line);
|
||||
|
||||
term_flush();
|
||||
while(1) {
|
||||
halt();
|
||||
}
|
||||
|
|
|
|||
|
|
@ -1,6 +1,8 @@
|
|||
global start
|
||||
global heap_start
|
||||
extern kernel_boot
|
||||
extern kernel_main
|
||||
extern kernel_start
|
||||
extern kernel_end
|
||||
bits 32
|
||||
|
||||
; base, limit, access, flags
|
||||
|
|
@ -16,14 +18,18 @@ bits 32
|
|||
%endmacro
|
||||
|
||||
MAGIC equ 0xe85250d6
|
||||
FLAGS equ 0
|
||||
LENGTH equ mb_end - mb_start
|
||||
CHECKSUM equ -(MAGIC + LENGTH)
|
||||
|
||||
section .multiboot
|
||||
|
||||
VGABUF equ 0x000B8000
|
||||
KRNMAP equ 0xC0000000
|
||||
|
||||
section .multiboot.data
|
||||
align 8
|
||||
mb_start:
|
||||
dd MAGIC
|
||||
dd 0
|
||||
dd FLAGS
|
||||
dd LENGTH
|
||||
dd CHECKSUM
|
||||
dw 0
|
||||
|
|
@ -31,12 +37,6 @@ dw 0
|
|||
dd 8
|
||||
mb_end:
|
||||
|
||||
section .bss
|
||||
align 16
|
||||
stack_end:
|
||||
resb 16384
|
||||
stack_top:
|
||||
|
||||
section .rodata
|
||||
align 16
|
||||
gdt_start:
|
||||
|
|
@ -48,16 +48,77 @@ gdt_descriptor:
|
|||
dw gdt_end - gdt_start - 1
|
||||
dd gdt_start
|
||||
|
||||
section .text
|
||||
section .bootstrap_stack
|
||||
align 16
|
||||
stack_start:
|
||||
resb 16384 ; 16 KiB
|
||||
stack_end:
|
||||
|
||||
section .bss
|
||||
align 4096
|
||||
page_directory:
|
||||
resb 4096
|
||||
page_table1:
|
||||
resb 4096
|
||||
|
||||
section .multiboot.text
|
||||
align 8
|
||||
start:
|
||||
|
||||
; push ebx
|
||||
; call kernel_boot
|
||||
; pop eax
|
||||
|
||||
mov edi, page_table1 - KRNMAP
|
||||
mov esi, 0
|
||||
mov ecx, 1023
|
||||
|
||||
paging_cmp:
|
||||
cmp esi, kernel_start
|
||||
jl paging_add
|
||||
cmp esi, kernel_end - KRNMAP
|
||||
jge paging_map
|
||||
|
||||
mov edx, esi
|
||||
or edx, 0x003
|
||||
mov [edi], edx
|
||||
|
||||
paging_add:
|
||||
add esi, 4096
|
||||
add edi, 4
|
||||
loop paging_cmp
|
||||
|
||||
paging_map:
|
||||
mov dword [page_table1 - KRNMAP + 1023 * 4], VGABUF | 0x003
|
||||
mov dword [page_directory - KRNMAP + 0], page_table1 - KRNMAP + 0x003
|
||||
mov dword [page_directory - KRNMAP + 768 * 4], page_table1 - KRNMAP + 0x003
|
||||
|
||||
mov ecx, page_directory - KRNMAP
|
||||
mov cr3, ecx
|
||||
|
||||
mov ecx, cr0
|
||||
or ecx, 0x80010000
|
||||
mov cr0, ecx
|
||||
|
||||
lea ecx, load_gdt
|
||||
jmp near ecx
|
||||
|
||||
section .text
|
||||
align 8
|
||||
load_gdt:
|
||||
cli
|
||||
lgdt [gdt_descriptor]
|
||||
mov eax, cr0
|
||||
or al, 1
|
||||
mov cr0, eax
|
||||
jmp 0x08:after_lgdt
|
||||
after_lgdt:
|
||||
jmp 0x08:load_kernel
|
||||
|
||||
load_kernel:
|
||||
|
||||
mov dword [page_directory], 0
|
||||
mov ecx, cr3
|
||||
mov cr3, ecx
|
||||
|
||||
mov ax, 0x10
|
||||
mov ds, ax
|
||||
mov ss, ax
|
||||
|
|
@ -67,7 +128,6 @@ after_lgdt:
|
|||
mov esp, stack_end
|
||||
mov ebp, stack_end
|
||||
sti
|
||||
push ebx
|
||||
call kernel_main
|
||||
cli
|
||||
halt:
|
||||
|
|
|
|||
|
|
@ -28,7 +28,7 @@ static void term_clear_line(int y) {
|
|||
void term_init (void) {
|
||||
x = 0;
|
||||
y = 0;
|
||||
front = (uint16_t*) 0xb8000;
|
||||
front = (uint16_t*) 0xC03FF000;
|
||||
term_setfg(VGA_WHITE);
|
||||
term_setbg(VGA_BLACK);
|
||||
term_clear();
|
||||
|
|
|
|||
Loading…
Reference in a new issue