97 lines
3.0 KiB
C
97 lines
3.0 KiB
C
/**
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* Entry point of rockOS
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* Copyright (C) 2022 Furkan Mudanyali
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, _either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include <stdio.h>
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#include <rockos/tty.h>
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#include <rockos/keyboard.h>
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#include <rockos/pic.h>
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#include <rockos/hal.h>
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#include <rockos/timer.h>
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#include <rockos/paging.h>
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#include <rockos/kheap.h>
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#include <rockos/multiboot.h>
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#include <rockos/vfs.h>
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#include <rockos/rockos.h>
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#include <string.h>
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extern char _rockos_start, _rockos_end;
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multiboot_info_t* multiboot_info;
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Tar* files;
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void bootloader_init(multiboot_info_t* mbd, unsigned int magic) {
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/* Make sure the magic number matches for memory mapping*/
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if(magic != MULTIBOOT_BOOTLOADER_MAGIC) {
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panic("invalid magic number!");
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}
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/* Check bit 6 to see if we have a valid memory map */
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if(!(mbd->flags >> 6 & 0x1)) {
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panic("invalid memory map given by GRUB bootloader");
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}
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multiboot_info = mbd;
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}
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void kernel_main() {
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initialize_keyset();
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outb(0x70, 0x0); // Seconds
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uint8_t sec = inb(0x71);
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outb(0x70, 0x02); // Minutes
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uint8_t min = inb(0x71);
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outb(0x70, 0x04); // Hours
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uint8_t hour = inb(0x71);
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// BCD to binary conversion
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sec = (sec & 0x0F) + ((sec / 16) * 10);
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min = (min & 0x0F) + ((min / 16) * 10);
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hour = ((hour & 0x0F) + (((hour & 0x70) / 16) * 10)) | (hour & 0x80);
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printf("Time: %02d:%02d:%02d UTC+3\n", (hour + 3) % 24, min, sec);
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for(multiboot_uint32_t i = 0; i < multiboot_info->mmap_length; i += sizeof(multiboot_memory_map_t)) {
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multiboot_memory_map_t* mmmt =
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(multiboot_memory_map_t*) (multiboot_info->mmap_addr + i);
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printf("Start Addr: %#08X | Length: %#08X | Size: %#08X | Type: %X\n",
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mmmt->addr_low, mmmt->len_low, mmmt->size, mmmt->type);
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if(mmmt->type == MULTIBOOT_MEMORY_AVAILABLE) {
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//
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}
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}
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files = kmalloc(256 * sizeof(Tar));
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uint32_t initrd_location = *((uint32_t*)multiboot_info->mods_addr);
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printf("Initrd location: %#08X\n", initrd_location);
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uint32_t fileCount = TarParse(initrd_location);
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printf("Found files: %d\n", fileCount);
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for(uint32_t i = 0; i < fileCount; ++i) {
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printf("Filename: %s\n", files[i].header->filename);
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printf("%s\n", files[i].data);
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}
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unsigned char key;
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for(;;) {
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key = readkey();
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if(key)
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putchar(key);
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}
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asm("cli; hlt");
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}
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