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9c0146869c
...
7616ad40ee
Author | SHA1 | Date |
---|---|---|
Nigel Barink | 7616ad40ee | |
Nigel Barink | 8ea45d3818 | |
Nigel Barink | fa67df4bc0 | |
Nigel Barink | b41f6a380e | |
Nigel Barink | 4008fc25e8 | |
Nigel Barink | 9f2b2a0798 | |
Nigel Barink | 19274825fe | |
Nigel Barink | 660f662079 | |
Nigel Barink | 0f1b61deb9 | |
Nigel Barink | d48ee0d86c |
|
@ -0,0 +1,3 @@
|
|||
*.pdf filter=lfs diff=lfs merge=lfs -text
|
||||
*.png filter=lfs diff=lfs merge=lfs -text
|
||||
*.svg filter=lfs diff=lfs merge=lfs -text
|
17
Makefile
17
Makefile
|
@ -2,9 +2,10 @@
|
|||
EMULATOR = qemu-system-i386
|
||||
AS = ${HOME}/opt/cross/bin/i686-elf-as
|
||||
CC = ${HOME}/opt/cross/bin/i686-elf-gcc
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||||
CFLAGS = -std=gnu99 -ffreestanding -O2 -Wall -Wextra
|
||||
CPP = ${HOME}/opt/cross/bin/i686-elf-g++
|
||||
CFLAGS = -ffreestanding -O2 -Wall -Wextra
|
||||
|
||||
OFILES = $(BUILD_DIR)/boot.o $(BUILD_DIR)/kterm.o $(BUILD_DIR)/kernel.o
|
||||
OFILES = $(BUILD_DIR)/boot.o $(BUILD_DIR)/kterm.o $(BUILD_DIR)/kernel.o $(BUILD_DIR)/io.o $(BUILD_DIR)/MMU.o
|
||||
|
||||
SRC_DIR = src
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||||
BUILD_DIR = build
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||||
|
@ -23,7 +24,8 @@ all: clean build
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build: build_kernel run
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||||
|
||||
run:
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||||
$(EMULATOR) -kernel $(BUILD_DIR)/myos.bin
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$(EMULATOR) -kernel $(BUILD_DIR)/myos.bin -serial stdio
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||||
|
||||
build_kernel: $(OBJ_LINK_LIST)
|
||||
|
||||
$(CC) -T $(SRC_DIR)/kernel/arch/i386/linker.ld -o $(BUILD_DIR)/myos.bin \
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||||
|
@ -37,10 +39,10 @@ clean:
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|||
rm -f $(BUILD_DIR)/myos.bin $(INTERNAL_OBJS)
|
||||
|
||||
$(BUILD_DIR)/kernel.o:
|
||||
$(CC) -c $(SRC_DIR)/kernel/kernel.c -o $(BUILD_DIR)/kernel.o $(CFLAGS)
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||||
$(CPP) -c $(SRC_DIR)/kernel/kernel.cpp -o $(BUILD_DIR)/kernel.o $(CFLAGS) -fno-exceptions -fno-rtti
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||||
|
||||
$(BUILD_DIR)/kterm.o:
|
||||
$(CC) -c $(SRC_DIR)/kernel/arch/i386/tty/kterm.c -o $(BUILD_DIR)/kterm.o $(CFLAGS)
|
||||
$(CC) -c $(SRC_DIR)/kernel/arch/i386/tty/kterm.c -o $(BUILD_DIR)/kterm.o $(CFLAGS) -std=gnu99
|
||||
|
||||
$(BUILD_DIR)/boot.o:
|
||||
$(AS) $(SRC_DIR)/kernel/arch/i386/boot.s -o $(BUILD_DIR)/boot.o
|
||||
|
@ -50,3 +52,8 @@ $(BUILD_DIR)/crti.o:
|
|||
|
||||
$(BUILD_DIR)/crtn.o:
|
||||
$(AS) $(SRC_DIR)/kernel/arch/i386/crtn.s -o $(BUILD_DIR)/crtn.o
|
||||
|
||||
$(BUILD_DIR)/io.o:
|
||||
$(CPP) -c $(SRC_DIR)/kernel/io.cpp -o $(BUILD_DIR)/io.o $(CFLAGS) -fno-exceptions -fno-rtti
|
||||
$(BUILD_DIR)/MMU.o:
|
||||
$(CPP) -c $(SRC_DIR)/kernel/MMU.cpp -o $(BUILD_DIR)/MMU.o $(CFLAGS) -fno-exceptions -fno-rtti
|
63
README.md
63
README.md
|
@ -1,52 +1,49 @@
|
|||
# Writing an Operating system
|
||||
## As a learning experience... Inspired by people like.. Linus Torvalds and Andreas Kling
|
||||
## As a learning experience!
|
||||
Inspired by people like Linus Torvalds and Andreas Kling
|
||||
|
||||
![Logo](images/BarinkOS.png)
|
||||
|
||||
________________________
|
||||
### Screenshot(s)
|
||||
![Scrolling the terminal](screenshots/Screenshot1.png) \
|
||||
The first scrolling boot screen. 😲
|
||||
|
||||
|
||||
________________________
|
||||
|
||||
### The goal
|
||||
Writing a hobby operating system to better understand the basic building blocks of any operating system.
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
________________________
|
||||
### Operating System Technical specs/details
|
||||
Currently the operating system is in the planning fase.
|
||||
I hope to soon have the basic output and booting sequence with multiboot done.
|
||||
|
||||
The operating system can print strings to the
|
||||
screen. The terminal/screen has scrolling so the latest messages are visible on the screen.
|
||||
|
||||
________________________
|
||||
### Planning
|
||||
[See TODO](TODO.md)
|
||||
|
||||
[x] Muliboot to kernel \
|
||||
[ ] Printing strings and integer numbers (both decimal and hex) on the screen is certainly a must. This is one of most basic ways of debugging, and virtually all of us have gone through a kprint() or kout in version 0.01. \
|
||||
[ ] Outputting to a serial port will save you a lot of debugging time. You don't have to fear losing information due to scrolling. You will be able to test your OS from a console, filter interesting debug messages, and automatize some tests. \
|
||||
[ ] Having a working and reliable interrupt/exception handling system that can dump the contents of the registers (and perhaps the address of the fault) will be very useful. \
|
||||
[ ] Plan your memory map (virtual, and physical) : decide where you want the data to be. \
|
||||
[ ] The heap: allocating memory at runtime (malloc and free) is almost impossible to go without. It should be implemented as soon as possible.
|
||||
|
||||
|
||||
### Other features I am thinking of:
|
||||
[ ] USTAR Filesystem ( For its simplicity this is very likely the first filesystem the OS is going to support) \
|
||||
[ ] Memory Management \
|
||||
[ ] Scheduling (Unknown what the scheduling algorithm will be, as with everything suspect simplicity) \
|
||||
[ ] RPC - for interprocess communication \
|
||||
[ ] Sync primitives - Semaphores, Mutexes, spinlocks et al. \
|
||||
[ ] ACPI support ( Or some other basic way to support shutdown, reboot and possibly hibernation ) \
|
||||
[ ] ATA support \
|
||||
[ ] Keyboard support ( must have ) \
|
||||
[ ] Basic hardware recognition ( CPU codename, memory, ATA harddisk, RAW diskSpace, CPU speed et al. ) \
|
||||
[ ] Basic Terminal \
|
||||
[ ] Simplistic draw ( maybe ?!?) \
|
||||
### Far in the future: \
|
||||
[ ] Basic Window server/client
|
||||
#### Support for more filesystems if I like the challenge in writing these ...
|
||||
[ ] FAT Filesystem
|
||||
[ ] EXT2 Filesystem
|
||||
|
||||
|
||||
|
||||
________________________
|
||||
### Docs
|
||||
[Intro](docs/Intro.md) \
|
||||
[Manuals](docs/Manuals.md) \
|
||||
[Project structure](docs/ProjectStructure.md)
|
||||
________________________
|
||||
### Resources:
|
||||
|
||||
#### General kernel stuff
|
||||
[wiki.osdev.org/Main_Page](wiki.osdev.org/Main_Page)
|
||||
|
||||
[Modern Operating Systems [book]](https://www.amazon.com/Modern-Operating-Systems-Tanenbaum-Andrew/dp/1292061421/ref=sr_1_1?__mk_nl_NL=%C3%85M%C3%85%C5%BD%C3%95%C3%91&dchild=1&keywords=Modern+Operating+systems&qid=1619967779&sr=8-1)
|
||||
|
||||
[whiteheadsoftware.dev](https://whiteheadsoftware.dev/operating-systems-development-for-dummies/)
|
||||
|
||||
#### More specific stuff
|
||||
[VFS explained: science.unitn.it](https://www.science.unitn.it/~fiorella/guidelinux/tlk/node102.html)
|
||||
|
||||
|
||||
[whiteheadsoftware.dev](https://whiteheadsoftware.dev/operating-systems-development-for-dummies/)
|
|
@ -0,0 +1,40 @@
|
|||
# TODO list
|
||||
## Start planning
|
||||
<input type="checkbox" checked/> Setup Cross-Compiler \
|
||||
<input type="checkbox" checked/> Multiboot to kernel \
|
||||
<input type="checkbox" checked/> Printing string to the screen \
|
||||
<input type="checkbox" /> Printing values/numbers to the screen (a.k.k itoa) \
|
||||
<input type="checkbox" /> Extend Multiboot implementation \
|
||||
<input type="checkbox" checked/> Output to serial port \
|
||||
<input type="checkbox" /> Move to protected mode \
|
||||
<input type="checkbox" /> Enabel CMOS clock \
|
||||
<input type="checkbox" /> Time measurement (PIC &| PIT) \
|
||||
<input type="checkbox" /> Detect CPU speed \
|
||||
<input type="checkbox" /> Interrupt / exception system (API) \
|
||||
|
||||
<input type="checkbox" /> Plan your memory map (virtual, and physical) : decide where you want the data to be. \
|
||||
<input type="checkbox" /> The heap: allocating memory at runtime (malloc and free) is almost impossible to go without. \
|
||||
<input type="checkbox" /> Enable SIMD Extensions (SSE)
|
||||
|
||||
## Other features I am thinking of:
|
||||
<input type="checkbox" /> PCI support \
|
||||
<input type="checkbox" /> ATA PIO Mode support \
|
||||
<input type="checkbox" /> USTAR Filesystem ( For its simplicity this is very likely the first filesystem the OS is going to support) \
|
||||
<input type="checkbox" /> ACPI support ( Or some other basic way to support shutdown, reboot and possibly hibernation ) \
|
||||
<input type="checkbox" /> ATAPI support \
|
||||
<input type="checkbox" /> Keyboard support ( P/S2 Keyboard) \
|
||||
<input type="checkbox" /> Memory Management (MMU)\
|
||||
<input type="checkbox" /> Preemptive multi tasking
|
||||
<input type="checkbox" /> Processes
|
||||
<input type="checkbox" /> Threads
|
||||
<input type="checkbox" /> Scheduling (SRV2 Unix OR Priority Based Round Robin) \
|
||||
<input type="checkbox" /> System V ABI compliance (partially)
|
||||
<input type="checkbox" /> POSIX compliance (partially)
|
||||
<input type="checkbox" /> RPC - for interprocess communication \
|
||||
<input type="checkbox" /> Sync primitives - Semaphores, Mutexes, spinlocks et al. \
|
||||
<input type="checkbox" /> Basic Terminal \
|
||||
<input type="checkbox" /> Extend hardware recognition ( CPU codename, memory, ATA harddisk, RAW diskSpace, CPU speed through SMBIOS et al. ) \
|
||||
<input type="checkbox" /> Basic Window server/client \
|
||||
## Support for more filesystems if I like the challenge in writing these ...
|
||||
<input type="checkbox" /> FAT Filesystem \
|
||||
<input type="checkbox" /> EXT2 Filesystem \
|
BIN
docs/Reference Manuals/64-ia-32-architectures-software-developer-instruction-set-reference-manual-325383.pdf (Stored with Git LFS)
Normal file
BIN
docs/Reference Manuals/64-ia-32-architectures-software-developer-instruction-set-reference-manual-325383.pdf (Stored with Git LFS)
Normal file
Binary file not shown.
BIN
docs/Reference Manuals/64-ia-32-architectures-software-developer-vol-1-manual.pdf (Stored with Git LFS)
Normal file
BIN
docs/Reference Manuals/64-ia-32-architectures-software-developer-vol-1-manual.pdf (Stored with Git LFS)
Normal file
Binary file not shown.
Binary file not shown.
Binary file not shown.
Binary file not shown.
Binary file not shown.
Binary file not shown.
Binary file not shown.
|
@ -0,0 +1,35 @@
|
|||
#include "MMU.h"
|
||||
|
||||
|
||||
|
||||
void MMU::enable(){
|
||||
|
||||
//set each entry to not present
|
||||
int i;
|
||||
for(i = 0; i < 1024; i++)
|
||||
{
|
||||
// This sets the following flags to the pages:
|
||||
// Supervisor: Only kernel-mode can access them
|
||||
// Write Enabled: It can be both read from and written to
|
||||
// Not Present: The page table is not present
|
||||
this->page_directory[i] = 0x00000002;
|
||||
}
|
||||
|
||||
// holds the physical address where we want to start mapping these pages to.
|
||||
// in this case, we want to map these pages to the very beginning of memory.
|
||||
|
||||
//we will fill all 1024 entries in the table, mapping 4 megabytes
|
||||
for(unsigned int i = 0; i < 1024; i++)
|
||||
{
|
||||
// As the address is page aligned, it will always leave 12 bits zeroed.
|
||||
// Those bits are used by the attributes ;)
|
||||
first_page_table[i] = (i * 0x1000) | 3; // attributes: supervisor level, read/write, present.
|
||||
}
|
||||
|
||||
// attributes: supervisor level, read/write, present
|
||||
this->page_directory[0] = ((unsigned int)first_page_table) | 3;
|
||||
|
||||
|
||||
loadPageDirectory(this->page_directory);
|
||||
enablePaging();
|
||||
}
|
|
@ -0,0 +1,14 @@
|
|||
#pragma once
|
||||
#include <stdint.h>
|
||||
|
||||
extern "C" void loadPageDirectory (long unsigned int* addr );
|
||||
extern "C" void enablePaging();
|
||||
|
||||
class MMU {
|
||||
public:
|
||||
void enable ();
|
||||
|
||||
private:
|
||||
uint32_t page_directory[1024] __attribute__((aligned(4096)));
|
||||
uint32_t first_page_table[1024] __attribute__((aligned(4096)));
|
||||
};
|
|
@ -21,6 +21,32 @@ stack_bottom:
|
|||
stack_top:
|
||||
|
||||
|
||||
|
||||
|
||||
.text
|
||||
.globl enablePaging
|
||||
enablePaging:
|
||||
push %ebp
|
||||
mov %esp, %ebp
|
||||
mov %cr0, %eax
|
||||
or $0x80000000, %eax
|
||||
mov %eax, %cr0
|
||||
mov %ebp, %esp
|
||||
pop %ebp
|
||||
ret
|
||||
|
||||
.text
|
||||
.globl loadPageDirectory
|
||||
loadPageDirectory:
|
||||
push %ebp
|
||||
mov %esp, %ebp
|
||||
mov 8(%esp), %eax
|
||||
mov %eax, %cr3
|
||||
mov %ebp, %esp
|
||||
pop %ebp
|
||||
ret
|
||||
|
||||
|
||||
.section .text
|
||||
.global _start
|
||||
.type _start, @function
|
||||
|
|
|
@ -0,0 +1,19 @@
|
|||
#include "serial.h"
|
||||
|
||||
Serial Serial::init() {
|
||||
// No clue what to setup yet!
|
||||
|
||||
return Serial();
|
||||
}
|
||||
|
||||
void Serial::print(){
|
||||
// Do nothing!
|
||||
}
|
||||
|
||||
Serial::Serial(){
|
||||
// Do nothing!
|
||||
}
|
||||
|
||||
Serial::~Serial(){
|
||||
// Do nothing!
|
||||
}
|
|
@ -0,0 +1,19 @@
|
|||
#pragma once
|
||||
|
||||
class Serial {
|
||||
|
||||
public:
|
||||
static Serial init();
|
||||
|
||||
void print();
|
||||
|
||||
private:
|
||||
const int COM1 = 0x3F8;
|
||||
const int COM2 = 0x2F8;
|
||||
const int COM3 = 0x3E8;
|
||||
const int COM4 = 0x2E8;
|
||||
|
||||
|
||||
Serial();
|
||||
~Serial();
|
||||
};
|
|
@ -88,4 +88,5 @@ void kterm_write(const char* data, size_t size) {
|
|||
void kterm_writestring(const char* data ){
|
||||
AS_KERNEL();
|
||||
kterm_write(data, strlen(data));
|
||||
}
|
||||
}
|
||||
|
||||
|
|
|
@ -3,6 +3,7 @@
|
|||
#include <stddef.h>
|
||||
#include <stdint.h>
|
||||
#include <stdbool.h>
|
||||
|
||||
#include "../vga/colors.h"
|
||||
|
||||
void kterm_init();
|
||||
|
|
|
@ -0,0 +1,59 @@
|
|||
#include "io.h"
|
||||
|
||||
unsigned char inb_p(unsigned short ){
|
||||
|
||||
}
|
||||
unsigned short inw(unsigned short ){
|
||||
|
||||
}
|
||||
unsigned short inw_p(unsigned short ){
|
||||
|
||||
}
|
||||
unsigned int inl(unsigned short ){
|
||||
|
||||
}
|
||||
unsigned int inl_p(unsigned short ){
|
||||
|
||||
}
|
||||
|
||||
|
||||
void outb_p(unsigned char , unsigned short ){
|
||||
|
||||
}
|
||||
void outw(unsigned short , unsigned short ){
|
||||
|
||||
}
|
||||
void outw_p(unsigned short , unsigned short ){
|
||||
|
||||
}
|
||||
void outl(unsigned int , unsigned short ){
|
||||
|
||||
}
|
||||
void outl_p(unsigned int , unsigned short ){
|
||||
|
||||
}
|
||||
|
||||
void insb(unsigned short , void *,
|
||||
unsigned long ){
|
||||
|
||||
}
|
||||
void insw(unsigned short , void *,
|
||||
unsigned long ){
|
||||
|
||||
}
|
||||
void insl(unsigned short , void *,
|
||||
unsigned long ){
|
||||
|
||||
}
|
||||
void outsb(unsigned short , const void *,
|
||||
unsigned long ){
|
||||
|
||||
}
|
||||
void outsw(unsigned short , const void *,
|
||||
unsigned long ){
|
||||
|
||||
}
|
||||
void outsl(unsigned short , const void *,
|
||||
unsigned long ){
|
||||
|
||||
}
|
|
@ -0,0 +1,43 @@
|
|||
#pragma once
|
||||
#include <stdint.h>
|
||||
|
||||
static inline uint8_t inb(uint16_t port)
|
||||
{
|
||||
uint8_t ret;
|
||||
asm volatile ( "inb %1, %0"
|
||||
: "=a"(ret)
|
||||
: "Nd"(port) );
|
||||
return ret;
|
||||
}
|
||||
unsigned char inb_p(unsigned short port);
|
||||
unsigned short inw(unsigned short port);
|
||||
unsigned short inw_p(unsigned short port);
|
||||
unsigned int inl(unsigned short port);
|
||||
unsigned int inl_p(unsigned short port);
|
||||
|
||||
static inline void outb(uint16_t port, uint8_t val)
|
||||
{
|
||||
asm volatile ( "outb %0, %1" : : "a"(val), "Nd"(port) );
|
||||
/* There's an outb %al, $imm8 encoding, for compile-time constant port numbers that fit in 8b. (N constraint).
|
||||
* Wider immediate constants would be truncated at assemble-time (e.g. "i" constraint).
|
||||
* The outb %al, %dx encoding is the only option for all other cases.
|
||||
* %1 expands to %dx because port is a uint16_t. %w1 could be used if we had the port number a wider C type */
|
||||
}
|
||||
void outb_p(unsigned char value, unsigned short port);
|
||||
void outw(unsigned short value, unsigned short port);
|
||||
void outw_p(unsigned short value, unsigned short port);
|
||||
void outl(unsigned int value, unsigned short port);
|
||||
void outl_p(unsigned int value, unsigned short port);
|
||||
|
||||
void insb(unsigned short port, void *addr,
|
||||
unsigned long count);
|
||||
void insw(unsigned short port, void *addr,
|
||||
unsigned long count);
|
||||
void insl(unsigned short port, void *addr,
|
||||
unsigned long count);
|
||||
void outsb(unsigned short port, const void *addr,
|
||||
unsigned long count);
|
||||
void outsw(unsigned short port, const void *addr,
|
||||
unsigned long count);
|
||||
void outsl(unsigned short port, const void *addr,
|
||||
unsigned long count);
|
|
@ -1,27 +0,0 @@
|
|||
#include "kernel.h"
|
||||
/**
|
||||
* simple delay function
|
||||
**/
|
||||
void delay(int t){
|
||||
volatile int i,j;
|
||||
for(i=0;i<t;i++)
|
||||
for(j=0;j<25000;j++)
|
||||
asm("NOP");
|
||||
}
|
||||
|
||||
void kernel_main (void) {
|
||||
/** initialize terminal interface */
|
||||
kterm_init();
|
||||
|
||||
/** Wrtite stuff to the screen to test the terminal**/
|
||||
kterm_writestring("Hello world!\n");
|
||||
kterm_writestring("We got newline support!\n");
|
||||
|
||||
for(;;){
|
||||
delay(500);
|
||||
kterm_writestring("We have implemented terminal scrolling!\n");
|
||||
}
|
||||
|
||||
|
||||
}
|
||||
|
|
@ -0,0 +1,136 @@
|
|||
#include "kernel.h"
|
||||
/**
|
||||
* simple delay function
|
||||
**/
|
||||
void delay(int t){
|
||||
volatile int i,j;
|
||||
for(i=0;i<t;i++)
|
||||
for(j=0;j<25000;j++)
|
||||
asm("NOP");
|
||||
}
|
||||
|
||||
class Test {
|
||||
public:
|
||||
Test();
|
||||
void printMe();
|
||||
~Test();
|
||||
};
|
||||
|
||||
|
||||
Test::Test(){
|
||||
kterm_writestring("Create a test object\n");
|
||||
};
|
||||
|
||||
void Test::printMe(){
|
||||
kterm_writestring("testObject.printMe()\n");
|
||||
}
|
||||
|
||||
Test::~Test(){
|
||||
kterm_writestring("Destroy testObject! Bye bye\n");
|
||||
}
|
||||
|
||||
#define PORT 0x3f8
|
||||
static int init_serial() {
|
||||
outb(PORT + 1, 0x00); // Disable all interrupts
|
||||
outb(PORT + 3, 0x80); // Enable DLAB (set baud rate divisor)
|
||||
outb(PORT + 0, 0x03); // Set divisor to 3 (lo byte) 38400 baud
|
||||
outb(PORT + 1, 0x00); // (hi byte)
|
||||
outb(PORT + 3, 0x03); // 8 bits, no parity, one stop bit
|
||||
outb(PORT + 2, 0xC7); // Enable FIFO, clear them, with 14-byte threshold
|
||||
outb(PORT + 4, 0x0B); // IRQs enabled, RTS/DSR set
|
||||
outb(PORT + 4, 0x1E); // Set in loopback mode, test the serial chip
|
||||
outb(PORT + 0, 0xAE); // Test serial chip (send byte 0xAE and check if serial returns same byte)
|
||||
|
||||
// Check if serial is faulty (i.e: not same byte as sent)
|
||||
if(inb(PORT + 0) != 0xAE) {
|
||||
return 1;
|
||||
}
|
||||
|
||||
// If serial is not faulty set it in normal operation mode
|
||||
// (not-loopback with IRQs enabled and OUT#1 and OUT#2 bits enabled)
|
||||
outb(PORT + 4, 0x0F);
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
int is_transmit_empty() {
|
||||
return inb(PORT + 5) & 0x20;
|
||||
}
|
||||
|
||||
void write_serial(char a) {
|
||||
while (is_transmit_empty() == 0);
|
||||
|
||||
outb(PORT,a);
|
||||
}
|
||||
|
||||
int serial_received() {
|
||||
return inb(PORT + 5) & 1;
|
||||
}
|
||||
|
||||
char read_serial() {
|
||||
while (serial_received() == 0);
|
||||
|
||||
return inb(PORT);
|
||||
}
|
||||
|
||||
|
||||
void test_serial(){
|
||||
/** Serial test **/
|
||||
kterm_writestring("Writing to COM1 serial port:");
|
||||
init_serial();
|
||||
write_serial('A');
|
||||
write_serial('B');
|
||||
write_serial('C');
|
||||
write_serial('D');
|
||||
write_serial('E');
|
||||
|
||||
char Character_received = read_serial();
|
||||
kterm_writestring("\n");
|
||||
kterm_writestring("received from COM 1: \n");
|
||||
kterm_put(Character_received);
|
||||
|
||||
kterm_writestring("\n");
|
||||
}
|
||||
|
||||
|
||||
extern "C" {
|
||||
void kernel_main (void) {
|
||||
/** initialize terminal interface */
|
||||
kterm_init();
|
||||
|
||||
/** Wrtite stuff to the screen to test the terminal**/
|
||||
kterm_writestring("Hello world!\n");
|
||||
kterm_writestring("We got newline support!\n");
|
||||
|
||||
/** Test scrolling **/
|
||||
for(int i=0; i < 5; i++){
|
||||
delay(500);
|
||||
kterm_writestring("We have implemented terminal scrolling!\n");
|
||||
}
|
||||
|
||||
|
||||
/** Test objective cpp **/
|
||||
kterm_writestring("Testing C++ object support\n");
|
||||
auto testObject = Test();
|
||||
testObject.printMe();
|
||||
|
||||
/** Setup the MMU **/
|
||||
kterm_writestring("Starting MMU...\n");
|
||||
auto mmu = MMU();
|
||||
mmu.enable();
|
||||
kterm_writestring("MMU enabled!\n");
|
||||
|
||||
|
||||
|
||||
|
||||
/** Lets start using the serial port for debugging .. **/
|
||||
// Hopefully once we go into realmode or do something that
|
||||
// cause the screen to go black.. this serial comms part will give
|
||||
// some situational awareness
|
||||
//Serial serialbus = Serial::init();
|
||||
|
||||
test_serial();
|
||||
|
||||
|
||||
}
|
||||
}
|
|
@ -1,3 +1,7 @@
|
|||
#pragma once
|
||||
extern "C" {
|
||||
#include "../libc/include/string.h"
|
||||
#include "arch/i386/tty/kterm.h"
|
||||
}
|
||||
#include "MMU.h"
|
||||
#include "io.h"
|
||||
|
|
Loading…
Reference in New Issue