mirror of
https://github.com/originalmk/mkos32.git
synced 2025-01-18 16:29:19 +00:00
Reorganised files into directories
This commit is contained in:
parent
ccd3538d1f
commit
226ad82b29
1
.gitignore
vendored
Normal file → Executable file
1
.gitignore
vendored
Normal file → Executable file
@ -5,3 +5,4 @@ mkos.bin
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mkos.iso
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bx_enh_dbg.ini
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dysk.img
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.idea/
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@ -1,4 +0,0 @@
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#!/bin/bash
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../Kompilator/cross/bin/i686-elf-as boot.s -o boot.o
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../Kompilator/cross/bin/i686-elf-gcc -c kernel.c -o kernel.o -std=gnu99 -ffreestanding -O2 -Wall -Wextra
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../Kompilator/cross/bin/i686-elf-gcc -T linker.ld -o mkos.bin -ffreestanding -O2 -nostdlib boot.o kernel.o -lgcc
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4
bochsrc → config/bochsrc
Normal file → Executable file
4
bochsrc → config/bochsrc
Normal file → Executable file
@ -1,9 +1,9 @@
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megs: 32
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cpu: count=1, ips=9000000
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ata0: enabled=1, ioaddr1=0x1f0, ioaddr2=0x3f0, irq=14
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ata0-master: type=cdrom, path="mkos.iso", status=inserted
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ata0-master: type=cdrom, path="../build/mkos.iso", status=inserted
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ata1: enabled=true, ioaddr1=0x170, ioaddr2=0x370, irq=15
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ata1-master: type=disk, path="dysk.img", mode=flat
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ata1-master: type=disk, path="../filesystem/dysk.img", mode=flat
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boot: cdrom
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display_library: x, options="gui_debug"
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magic_break: enabled=1
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0
grub.cfg → config/grub.cfg
Normal file → Executable file
0
grub.cfg → config/grub.cfg
Normal file → Executable file
122
idt.h
122
idt.h
@ -1,122 +0,0 @@
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#include <stddef.h>
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#include <stdint.h>
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#include <stdbool.h>
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#include "print.h"
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// Interrupt Gate Entry
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struct idt_int_gate
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{
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uint32_t offset;
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uint16_t segment_selector;
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bool is_present;
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int permission_level;
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bool is_32_bit;
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};
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struct idt_int_gate idt_int_gate_create(
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uint16_t segment_selector,
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uint32_t offset)
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{
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struct idt_int_gate new_gate;
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new_gate.segment_selector = segment_selector;
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new_gate.offset = offset;
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new_gate.is_present = true;
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new_gate.permission_level = 0;
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new_gate.is_32_bit = true;
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return new_gate;
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}
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uint64_t idt_int_gate_encode(struct idt_int_gate gate)
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{
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uint64_t gate_encoded = 0;
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// Insert offset
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gate_encoded |= ((((uint64_t) gate.offset) & 0xFFFF0000) << 32);
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gate_encoded |= ((((uint64_t) gate.offset) & 0x0000FFFF));
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// Insert segment selector
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gate_encoded |= ((((uint64_t) gate.segment_selector)) << 16);
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// Insert P(resent) bit
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gate_encoded |= ((((uint64_t) gate.is_present)) << 47);
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// Inesrt DPL
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gate_encoded |= ((((uint64_t) gate.permission_level)) << 45);
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// Insert D (size of gate)
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gate_encoded |= ((((uint64_t) gate.is_32_bit)) << 43);
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// Insert some magic bits
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uint8_t magic_bits = 0x30;
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gate_encoded |= ((((uint64_t) magic_bits)) << 37);
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return gate_encoded;
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}
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struct __attribute__((__packed__)) idt_table
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{
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// Size in bytes minus one!
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uint16_t size_in_bytes_m1;
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uint64_t *dest_pointer;
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struct idt_int_gate gates[256];
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};
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void apply_idt_table(struct idt_table table)
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{
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int entries_count = (table.size_in_bytes_m1 + 1) / 8;
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for (int i = 0; i < entries_count; i++)
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{
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uint64_t entry_encoded = idt_int_gate_encode(table.gates[i]);
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uint64_t *dest_address = table.dest_pointer + i;
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*dest_address = entry_encoded;
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}
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__asm__("lidt (%0)": :"r"(&table));
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}
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void default_int_handler()
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{
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__asm__("iret");
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}
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void idt_setup()
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{
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uintptr_t default_isr_ptr;
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__asm__("mov $default_isr, %%eax": : :"eax");
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__asm__("mov %%eax, %0;": "=r"(default_isr_ptr):);
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uintptr_t clock_isr_ptr;
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__asm__ volatile("mov $clock_isr, %%eax;"
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"mov %%eax, %0;"
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:
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"=r" (clock_isr_ptr)
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:
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:
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"eax"
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);
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struct idt_table table;
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table.size_in_bytes_m1 = 256 * 8 - 1;
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table.dest_pointer = (uint64_t*)0x500000;
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for (int i = 0; i < 256; i++)
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{
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struct idt_int_gate new_gate
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= idt_int_gate_create(0x8, default_isr_ptr);
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table.gates[i] = new_gate;
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}
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table.gates[0x70] = idt_int_gate_create(0x8, clock_isr_ptr);
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apply_idt_table(table);
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terminal_newline();
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terminal_writenumpad(default_isr_ptr, 16, 16);
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__asm__ volatile("sti");
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}
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@ -1,4 +0,0 @@
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#!/bin/bash
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cp mkos.bin isodir/boot/mkos.bin
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cp grub.cfg isodir/boot/grub/grub.cfg
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grub-mkrescue -o mkos.iso isodir
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4
scripts/compile.sh
Executable file
4
scripts/compile.sh
Executable file
@ -0,0 +1,4 @@
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#!/bin/bash
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../../Kompilator/cross/bin/i686-elf-as ../source/boot.s -o ../build/boot.o
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../../Kompilator/cross/bin/i686-elf-gcc -c ../source/kernel.c -o ../build/kernel.o -std=gnu99 -ffreestanding -O2 -Wall -Wextra
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../../Kompilator/cross/bin/i686-elf-gcc -T ../source/linker.ld -o ../build/mkos.bin -ffreestanding -O2 -nostdlib ../build/boot.o ../build/kernel.o -lgcc
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@ -1 +1 @@
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indent -nbad -bap -nbc -bbo -hnl -bl -bli0 -brs -c33 -cd33 -ncdb -ncdw -ci4 -cli0 -d0 -di1 -nfc1 -i8 -ip0 -l80 -lp -npcs -nprs -npsl -sai -saf -saw -ncs -nsc -sob -nfca -cp33 -ss -ts8 -il1 kernel.c
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indent -nbad -bap -nbc -bbo -hnl -bl -bli0 -brs -c33 -cd33 -ncdb -ncdw -ci4 -cli0 -d0 -di1 -nfc1 -i8 -ip0 -l80 -lp -npcs -nprs -npsl -sai -saf -saw -ncs -nsc -sob -nfca -cp33 -ss -ts8 -il1 source/kernel.c
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4
scripts/makeiso.sh
Executable file
4
scripts/makeiso.sh
Executable file
@ -0,0 +1,4 @@
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#!/bin/bash
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cp ../build/mkos.bin ../isodir/boot/mkos.bin
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cp ../config/grub.cfg ../isodir/boot/grub/grub.cfg
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grub-mkrescue -o ../build/mkos.iso ../isodir
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@ -2,5 +2,5 @@
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./compile.sh
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./makeiso.sh
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# Remove lock in case of bad shutdown, it makes debugging easier
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rm dysk.img.lock
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bochs
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rm ../filesystem/dysk.img.lock
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bochs -f ../config/bochsrc
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114
boot.s → source/boot.s
Normal file → Executable file
114
boot.s → source/boot.s
Normal file → Executable file
@ -32,7 +32,7 @@
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.global stack_top
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.global stack_bottom
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stack_bottom:
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/* Stos o wielkości 16 KB */
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/* Stos o wielkości 64 KB */
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.skip 65536
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stack_top:
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@ -45,83 +45,55 @@ clock_pos: .int 0x0
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Oznaczenie startu, tu zaczyna się kod kernela!
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*/
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.section .text
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.global default_isr
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.type default_isr, @function
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default_isr:
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cli
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push %eax
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mov $0x0F41, %eax
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add int_count, %eax
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mov %ax, 0xb8000
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incl int_count
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.macro isr number
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.global isr_\number
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.type isr_\number, @function
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isr_\number :
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pusha
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push $\number
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cmpl $0x5, int_count
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jne end
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call isr_common_handler
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movl $0x0, int_count
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add $4, %esp
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end:
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xchg %bx, %bx
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mov $0x20, %al
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outb %al, $0x20
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mov $0x20, %al
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outb %al, $0xA0
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pop %eax
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popa
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sti
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iretl
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.endm
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.global clock_isr
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.type clock_isr, @function
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clock_isr:
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cli
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push %eax
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//xchg %bx, %bx
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mov $0x0F41, %ax
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add clock_count, %ax
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mov clock_pos, %edx
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shl $1, %edx
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add $0xb8002, %edx
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movw %ax, (%edx)
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incl clock_count
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cmpl $0x1F, clock_count
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jne end2
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movl $0x0, clock_count
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end2:
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incl clock_pos
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cmpl $0x7CF, clock_pos
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jne end3
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movl $0x0, clock_pos
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end3:
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//xchg %bx, %bx
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mov $0x0c, %al
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outb %al, $0x70
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inb $0x71
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mov $0x20, %al
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outb %al, $0x20
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mov $0x20, %al
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outb %al, $0xA0
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// EOI
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pop %eax
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sti
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iretl
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isr 0
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isr 1
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isr 2
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isr 3
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isr 4
|
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isr 5
|
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isr 6
|
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isr 7
|
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isr 8
|
||||
isr 9
|
||||
isr 10
|
||||
isr 11
|
||||
isr 12
|
||||
isr 13
|
||||
isr 14
|
||||
isr 15
|
||||
isr 16
|
||||
isr 17
|
||||
isr 18
|
||||
isr 19
|
||||
isr 20
|
||||
isr 21
|
||||
isr 22
|
||||
isr 23
|
||||
isr 24
|
||||
isr 25
|
||||
isr 26
|
||||
isr 27
|
||||
isr 28
|
||||
isr 29
|
||||
isr 30
|
||||
isr 31
|
||||
|
||||
.global _start
|
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.type _start, @function
|
||||
0
gdt.h → source/gdt.h
Normal file → Executable file
0
gdt.h → source/gdt.h
Normal file → Executable file
210
source/idt.h
Executable file
210
source/idt.h
Executable file
@ -0,0 +1,210 @@
|
||||
#include <stddef.h>
|
||||
#include <stdint.h>
|
||||
#include <stdbool.h>
|
||||
|
||||
#include "print.h"
|
||||
#include "utils.h"
|
||||
|
||||
extern void isr_0();
|
||||
extern void isr_1();
|
||||
extern void isr_2();
|
||||
extern void isr_3();
|
||||
extern void isr_4();
|
||||
extern void isr_5();
|
||||
extern void isr_6();
|
||||
extern void isr_7();
|
||||
extern void isr_8();
|
||||
extern void isr_9();
|
||||
extern void isr_10();
|
||||
extern void isr_11();
|
||||
extern void isr_12();
|
||||
extern void isr_13();
|
||||
extern void isr_14();
|
||||
extern void isr_15();
|
||||
extern void isr_16();
|
||||
extern void isr_17();
|
||||
extern void isr_18();
|
||||
extern void isr_19();
|
||||
extern void isr_20();
|
||||
extern void isr_21();
|
||||
extern void isr_22();
|
||||
extern void isr_23();
|
||||
extern void isr_24();
|
||||
extern void isr_25();
|
||||
extern void isr_26();
|
||||
extern void isr_27();
|
||||
extern void isr_28();
|
||||
extern void isr_29();
|
||||
extern void isr_30();
|
||||
extern void isr_31();
|
||||
|
||||
// Interrupt Gate Entry
|
||||
struct idt_int_gate
|
||||
{
|
||||
uint32_t offset;
|
||||
uint16_t segment_selector;
|
||||
bool is_present;
|
||||
int permission_level;
|
||||
bool is_32_bit;
|
||||
};
|
||||
|
||||
struct idt_int_gate idt_int_gate_create(
|
||||
uint16_t segment_selector,
|
||||
uint32_t offset)
|
||||
{
|
||||
struct idt_int_gate new_gate;
|
||||
|
||||
new_gate.segment_selector = segment_selector;
|
||||
new_gate.offset = offset;
|
||||
|
||||
new_gate.is_present = true;
|
||||
new_gate.permission_level = 0;
|
||||
new_gate.is_32_bit = true;
|
||||
|
||||
return new_gate;
|
||||
}
|
||||
|
||||
uint64_t idt_int_gate_encode(struct idt_int_gate gate)
|
||||
{
|
||||
uint64_t gate_encoded = 0;
|
||||
|
||||
// Insert offset
|
||||
gate_encoded |= ((((uint64_t) gate.offset) & 0xFFFF0000) << 32);
|
||||
gate_encoded |= ((((uint64_t) gate.offset) & 0x0000FFFF));
|
||||
|
||||
// Insert segment selector
|
||||
gate_encoded |= ((((uint64_t) gate.segment_selector)) << 16);
|
||||
|
||||
// Insert P(resent) bit
|
||||
gate_encoded |= ((((uint64_t) gate.is_present)) << 47);
|
||||
|
||||
// Inesrt DPL
|
||||
gate_encoded |= ((((uint64_t) gate.permission_level)) << 45);
|
||||
|
||||
// Insert D (size of gate)
|
||||
gate_encoded |= ((((uint64_t) gate.is_32_bit)) << 43);
|
||||
|
||||
// Insert some magic bits
|
||||
uint8_t magic_bits = 0x30;
|
||||
gate_encoded |= ((((uint64_t) magic_bits)) << 37);
|
||||
|
||||
return gate_encoded;
|
||||
}
|
||||
|
||||
struct __attribute__((__packed__)) idt_table
|
||||
{
|
||||
// Size in bytes minus one!
|
||||
uint16_t size_in_bytes_m1;
|
||||
uint64_t *dest_pointer;
|
||||
struct idt_int_gate gates[256];
|
||||
};
|
||||
|
||||
void apply_idt_table(struct idt_table table)
|
||||
{
|
||||
int entries_count = (table.size_in_bytes_m1 + 1) / 8;
|
||||
for (int i = 0; i < entries_count; i++)
|
||||
{
|
||||
uint64_t entry_encoded = idt_int_gate_encode(table.gates[i]);
|
||||
uint64_t *dest_address = table.dest_pointer + i;
|
||||
*dest_address = entry_encoded;
|
||||
}
|
||||
|
||||
__asm__("lidt (%0)": :"r"(&table));
|
||||
}
|
||||
|
||||
void default_int_handler()
|
||||
{
|
||||
__asm__("iretl");
|
||||
}
|
||||
|
||||
void clock_int_handler()
|
||||
{
|
||||
printf("\n");
|
||||
set_interrupts(false);
|
||||
|
||||
int old_row = terminal_row;
|
||||
int old_col = terminal_column;
|
||||
terminal_row = 0;
|
||||
terminal_column = 0;
|
||||
display_date();
|
||||
terminal_row = old_row;
|
||||
terminal_column = old_col;
|
||||
|
||||
// Zero CMOS C register
|
||||
// Select C register
|
||||
outb(0x70, 0x0c);
|
||||
// Read C register contents (which resets it, so RTC can send next requests)
|
||||
inb(0x71);
|
||||
|
||||
// Send EOI to slave PIC (because IRQ 8 from RTC belongs to this PIC)
|
||||
outb(0xA0, 0x20);
|
||||
// Send EOI to master PIC (because master also needs to acknowledge
|
||||
// handling of interrupt even if it came from slave)
|
||||
outb(0x20, 0x20);
|
||||
|
||||
set_interrupts(true);
|
||||
|
||||
printf("Updated!");
|
||||
}
|
||||
|
||||
void idt_setup()
|
||||
{
|
||||
struct idt_table table;
|
||||
|
||||
table.size_in_bytes_m1 = 256 * 8 - 1;
|
||||
table.dest_pointer = (uint64_t*)0x500000;
|
||||
|
||||
// Empty ISR-s, for the sake of completeness
|
||||
for (int i = 0; i < 256; i++)
|
||||
{
|
||||
struct idt_int_gate new_gate
|
||||
= idt_int_gate_create(0x8, (intptr_t)default_int_handler);
|
||||
table.gates[i] = new_gate;
|
||||
}
|
||||
|
||||
// Clock ISR
|
||||
table.gates[0x28] = idt_int_gate_create(0x8, (intptr_t)clock_int_handler);
|
||||
|
||||
// 0-31 ISR-s
|
||||
table.gates[0] = idt_int_gate_create(0x8, (intptr_t)isr_0);
|
||||
table.gates[1] = idt_int_gate_create(0x8, (intptr_t)isr_1);
|
||||
table.gates[2] = idt_int_gate_create(0x8, (intptr_t)isr_2);
|
||||
table.gates[3] = idt_int_gate_create(0x8, (intptr_t)isr_3);
|
||||
table.gates[4] = idt_int_gate_create(0x8, (intptr_t)isr_4);
|
||||
table.gates[5] = idt_int_gate_create(0x8, (intptr_t)isr_5);
|
||||
table.gates[6] = idt_int_gate_create(0x8, (intptr_t)isr_6);
|
||||
table.gates[7] = idt_int_gate_create(0x8, (intptr_t)isr_7);
|
||||
table.gates[8] = idt_int_gate_create(0x8, (intptr_t)isr_8);
|
||||
table.gates[9] = idt_int_gate_create(0x8, (intptr_t)isr_9);
|
||||
table.gates[10] = idt_int_gate_create(0x8, (intptr_t)isr_10);
|
||||
table.gates[11] = idt_int_gate_create(0x8, (intptr_t)isr_11);
|
||||
table.gates[12] = idt_int_gate_create(0x8, (intptr_t)isr_12);
|
||||
table.gates[13] = idt_int_gate_create(0x8, (intptr_t)isr_13);
|
||||
table.gates[14] = idt_int_gate_create(0x8, (intptr_t)isr_14);
|
||||
table.gates[15] = idt_int_gate_create(0x8, (intptr_t)isr_15);
|
||||
table.gates[16] = idt_int_gate_create(0x8, (intptr_t)isr_16);
|
||||
table.gates[17] = idt_int_gate_create(0x8, (intptr_t)isr_17);
|
||||
table.gates[18] = idt_int_gate_create(0x8, (intptr_t)isr_18);
|
||||
table.gates[19] = idt_int_gate_create(0x8, (intptr_t)isr_19);
|
||||
table.gates[20] = idt_int_gate_create(0x8, (intptr_t)isr_20);
|
||||
table.gates[21] = idt_int_gate_create(0x8, (intptr_t)isr_21);
|
||||
table.gates[22] = idt_int_gate_create(0x8, (intptr_t)isr_22);
|
||||
table.gates[23] = idt_int_gate_create(0x8, (intptr_t)isr_23);
|
||||
table.gates[24] = idt_int_gate_create(0x8, (intptr_t)isr_24);
|
||||
table.gates[25] = idt_int_gate_create(0x8, (intptr_t)isr_25);
|
||||
table.gates[26] = idt_int_gate_create(0x8, (intptr_t)isr_26);
|
||||
table.gates[27] = idt_int_gate_create(0x8, (intptr_t)isr_27);
|
||||
table.gates[28] = idt_int_gate_create(0x8, (intptr_t)isr_28);
|
||||
table.gates[29] = idt_int_gate_create(0x8, (intptr_t)isr_29);
|
||||
table.gates[30] = idt_int_gate_create(0x8, (intptr_t)isr_30);
|
||||
table.gates[31] = idt_int_gate_create(0x8, (intptr_t)isr_31);
|
||||
|
||||
apply_idt_table(table);
|
||||
|
||||
__asm__ volatile("sti");
|
||||
}
|
||||
|
||||
void isr_common_handler(int number)
|
||||
{
|
||||
printf("Interrupt %d\n", number);
|
||||
}
|
||||
53
source/kernel.c
Executable file
53
source/kernel.c
Executable file
@ -0,0 +1,53 @@
|
||||
#include <stddef.h>
|
||||
#include <stdint.h>
|
||||
|
||||
#include "gdt.h"
|
||||
#include "print.h"
|
||||
#include "idt.h"
|
||||
#include "utils.h"
|
||||
|
||||
void kernel_main(void)
|
||||
{
|
||||
terminal_initialize();
|
||||
print_texts();
|
||||
gdt_setup();
|
||||
idt_setup();
|
||||
|
||||
// 8 of master PIC interrupt numbers
|
||||
// and 8 of slave PIC interrupt numbers
|
||||
// right after 0-31 interrupt numbers reserved for processor
|
||||
PIC_remap(0x20, 0x28);
|
||||
|
||||
// Set RTC freq
|
||||
uint8_t rate = 15;
|
||||
rate &= 0x0F;
|
||||
set_interrupts(false);
|
||||
outb(0x70, 0x8A);
|
||||
char prev = inb(0x71);
|
||||
outb(0x70, 0x8A);
|
||||
outb(0x71, (prev & 0xF0) | rate);
|
||||
set_interrupts(true);
|
||||
|
||||
// Set up RTC periodic interrupts
|
||||
set_interrupts(false);
|
||||
outb(0x70, 0x8B);
|
||||
prev = inb(0x71);
|
||||
outb(0x70, 0x8B);
|
||||
outb(0x71, prev | 0x44);
|
||||
set_interrupts(true);
|
||||
// Change to binary date format ^^
|
||||
|
||||
// Clear IRQ 8 mask
|
||||
//outb(0xA1, inb(0xA1) & ~(1 << 0));
|
||||
outb(0xA1, ~(1 << 0));
|
||||
outb(0x21, ~(1 << 2));
|
||||
|
||||
outb(0x70, 0x0C);
|
||||
unsigned short v = inb(0x71);
|
||||
terminal_newline();
|
||||
display_date();
|
||||
|
||||
__asm__("int $21");
|
||||
__asm__("int $10");
|
||||
__asm__("int $9");
|
||||
}
|
||||
0
linker.ld → source/linker.ld
Normal file → Executable file
0
linker.ld → source/linker.ld
Normal file → Executable file
83
print.h → source/print.h
Normal file → Executable file
83
print.h → source/print.h
Normal file → Executable file
@ -2,6 +2,10 @@
|
||||
|
||||
#include <stdint.h>
|
||||
#include <stddef.h>
|
||||
#include <stdarg.h>
|
||||
|
||||
#define NORMAL_MODE 0
|
||||
#define FORMAT_MODE 1
|
||||
|
||||
/*
|
||||
* Hardware text mode color constants.
|
||||
@ -78,8 +82,23 @@ void terminal_putentryat(char c, uint8_t color, size_t x, size_t y)
|
||||
terminal_buffer[index] = vga_entry(c, color);
|
||||
}
|
||||
|
||||
void terminal_putchar(char);
|
||||
void terminal_newline()
|
||||
{
|
||||
for (size_t x = terminal_column; x < VGA_WIDTH; x++)
|
||||
{
|
||||
terminal_putchar(' ');
|
||||
}
|
||||
}
|
||||
|
||||
void terminal_putchar(char c)
|
||||
{
|
||||
if (c == '\n')
|
||||
{
|
||||
terminal_newline();
|
||||
return;
|
||||
}
|
||||
|
||||
terminal_putentryat(c, terminal_color, terminal_column, terminal_row);
|
||||
if (++terminal_column == VGA_WIDTH)
|
||||
{
|
||||
@ -127,28 +146,13 @@ void terminal_putchar(char c)
|
||||
terminal_color = prevColor;
|
||||
}
|
||||
|
||||
void terminal_newline()
|
||||
{
|
||||
for (size_t x = terminal_column; x < VGA_WIDTH; x++)
|
||||
{
|
||||
terminal_putchar(' ');
|
||||
}
|
||||
}
|
||||
|
||||
void terminal_write(const char *data, size_t size)
|
||||
{
|
||||
for (size_t i = 0; i < size; i++)
|
||||
{
|
||||
if (data[i] == '\n')
|
||||
{
|
||||
terminal_newline();
|
||||
}
|
||||
else
|
||||
{
|
||||
terminal_putchar(data[i]);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Pad length is what number length should be, including padding
|
||||
void terminal_writenumpad(const uint64_t number, int base, int pad_length)
|
||||
@ -257,3 +261,52 @@ void print_texts()
|
||||
terminal_writestring(" MiB\n");
|
||||
}
|
||||
|
||||
void printf(const char *format, ...)
|
||||
{
|
||||
int current_mode = NORMAL_MODE;
|
||||
va_list vl;
|
||||
va_start(vl, format);
|
||||
|
||||
for (int i = 0; format[i] != '\0'; i++)
|
||||
{
|
||||
char current = format[i];
|
||||
switch (current)
|
||||
{
|
||||
case '%':
|
||||
if (current_mode == FORMAT_MODE)
|
||||
{
|
||||
current_mode = NORMAL_MODE;
|
||||
terminal_putchar(current);
|
||||
}
|
||||
else if (current_mode == NORMAL_MODE)
|
||||
{
|
||||
current_mode = FORMAT_MODE;
|
||||
}
|
||||
break;
|
||||
default:
|
||||
if (current_mode == NORMAL_MODE)
|
||||
{
|
||||
terminal_putchar(current);
|
||||
}
|
||||
else if (current_mode == FORMAT_MODE)
|
||||
{
|
||||
// Print argument
|
||||
switch (current)
|
||||
{
|
||||
case 's':
|
||||
terminal_writestring(va_arg(vl, char*));
|
||||
break;
|
||||
case 'd':
|
||||
terminal_writenum(va_arg(vl, int), 10);
|
||||
break;
|
||||
case 'x':
|
||||
terminal_writenum(va_arg(vl, int), 16);
|
||||
}
|
||||
current_mode = NORMAL_MODE;
|
||||
}
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
va_end(vl);
|
||||
}
|
||||
78
kernel.c → source/utils.h
Normal file → Executable file
78
kernel.c → source/utils.h
Normal file → Executable file
@ -1,9 +1,4 @@
|
||||
#include <stddef.h>
|
||||
#include <stdint.h>
|
||||
|
||||
#include "gdt.h"
|
||||
#include "print.h"
|
||||
#include "idt.h"
|
||||
#pragma once
|
||||
|
||||
/* Taken from OSDEV WIKI */
|
||||
#define PIC1 0x20 /* IO base address for master PIC */
|
||||
@ -74,6 +69,13 @@ static inline void io_wait(void)
|
||||
outb(0x80, 0);
|
||||
}
|
||||
|
||||
uint8_t cmos_register_value(uint16_t register_number)
|
||||
{
|
||||
outb(0x70, register_number);
|
||||
return inb(0x71);
|
||||
}
|
||||
|
||||
|
||||
void PIC_remap(int offset1, int offset2)
|
||||
{
|
||||
unsigned char a1, a2;
|
||||
@ -103,12 +105,6 @@ void PIC_remap(int offset1, int offset2)
|
||||
outb(PIC2_DATA, a2);
|
||||
}
|
||||
|
||||
uint8_t cmos_register_value(uint16_t register_number)
|
||||
{
|
||||
outb(0x70, register_number);
|
||||
return inb(0x71);
|
||||
}
|
||||
|
||||
void display_date()
|
||||
{
|
||||
uint8_t year = cmos_register_value(0x09);
|
||||
@ -129,61 +125,5 @@ void display_date()
|
||||
terminal_writenumpad(minutes, 10, 2);
|
||||
terminal_writestring(":");
|
||||
terminal_writenumpad(seconds, 10, 2);
|
||||
}
|
||||
|
||||
void kernel_main(void)
|
||||
{
|
||||
terminal_initialize();
|
||||
print_texts();
|
||||
gdt_setup();
|
||||
idt_setup();
|
||||
|
||||
PIC_remap(0x08, 0x70);
|
||||
|
||||
// Set RTC freq
|
||||
uint8_t rate = 15;
|
||||
rate &= 0x0F;
|
||||
set_interrupts(false);
|
||||
outb(0x70, 0x8A);
|
||||
char prev = inb(0x71);
|
||||
outb(0x70, 0x8A);
|
||||
outb(0x71, (prev & 0xF0) | rate);
|
||||
set_interrupts(true);
|
||||
|
||||
// Set up RTC periodic interrupts
|
||||
set_interrupts(false);
|
||||
outb(0x70, 0x8B);
|
||||
prev = inb(0x71);
|
||||
outb(0x70, 0x8B);
|
||||
outb(0x71, prev | 0x44);
|
||||
set_interrupts(true);
|
||||
// Change to binary date format ^^
|
||||
|
||||
// Clear IRQ 8 mask
|
||||
//outb(0xA1, inb(0xA1) & ~(1 << 0));
|
||||
outb(0xA1, ~(1 << 0));
|
||||
outb(0x21, ~(1 << 2));
|
||||
|
||||
uint8_t slave_mask = inb(0xA1);
|
||||
terminal_newline();
|
||||
terminal_writestring("Slave mask: \n");
|
||||
terminal_writenumpad(slave_mask, 2, 8);
|
||||
|
||||
uint8_t master_mask = inb(0x21);
|
||||
terminal_newline();
|
||||
terminal_writestring("Master mask:\n");
|
||||
terminal_writenumpad(master_mask, 2, 8);
|
||||
|
||||
outb(0x70, 0x0C);
|
||||
unsigned short v = inb(0x71);
|
||||
terminal_newline();
|
||||
terminal_writenumpad(v, 16, 2);
|
||||
|
||||
terminal_newline();
|
||||
terminal_writestring("PTR");
|
||||
terminal_writenumpad((uintptr_t)&kernel_main, 16, 16);
|
||||
|
||||
terminal_newline();
|
||||
display_date();
|
||||
breakpoint();
|
||||
terminal_newline();
|
||||
}
|
||||
Loading…
x
Reference in New Issue
Block a user