mirror of
https://github.com/encounter/osdev.git
synced 2026-07-10 12:18:43 -07:00
Luke Street
91 lines
1.9 KiB
C
91 lines
1.9 KiB
C
#include "console.h"
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#include "descriptor_tables.h"
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#include "drivers/timer.h"
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#include "shell.h"
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#include "drivers/keyboard.h"
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#include "multiboot.h"
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#include "drivers/serial.h"
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#include "drivers/pci.h"
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#include "drivers/ata.h"
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#include "fatfs/ff.h"
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#include "bmp.h"
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#include "drivers/vga.h"
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#include "arch/x86/mmu.h"
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#ifdef ENABLE_DWARF
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#include "dwarf.h"
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#endif
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#include <common.h>
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#include <stdio.h>
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// #define KDEBUG
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_noreturn _unused
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void kernel_main(uint32_t multiboot_magic, void *multiboot_info) {
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serial_init();
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console_set_serial_enabled(true);
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multiboot_init(multiboot_magic, multiboot_info);
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bool vga_enabled = console_vga_enabled();
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console_set_vga_enabled(false);
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pci_init();
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ata_init();
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// uint32_t i = UINT32_MAX / 16;
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// while(i--); // stall
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bool fs_mounted = false;
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printf("Mounting drive 0... ");
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FATFS fs;
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FRESULT ret = f_mount(&fs, "", 1);
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if (ret == FR_OK) {
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printf("OK\n");
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fs_mounted = true;
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} else {
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printf("fail %d\n", ret);
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}
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#ifdef ENABLE_DWARF
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// dwarf_find_debug_info();
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#endif
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if (vga_enabled && !vga_load_font("assets/default8x16.psfu")) {
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console_set_vga_enabled(vga_enabled);
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}
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clear_screen();
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// FIXME add to malloc
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page_table_set(0x400000, 0xC0400000, 0x83);
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page_table_set(0x800000, 0xC0800000, 0x83);
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#ifdef KDEBUG
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kprint("Initializing timer...\n");
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init_timer(1);
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#endif
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#ifdef KDEBUG
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kprint("Setting up IRQ handlers...\n");
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#endif
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shell_init(fs_mounted);
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#ifdef KDEBUG
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kprint("Enabling maskable interrupts...\n");
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#endif
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__asm__ volatile("sti");
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#ifdef KDEBUG
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kprint("Waiting for tick 0x100...");
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while (get_tick() < 0x100) {}
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clear_screen();
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#endif
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while (1) {
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__asm__ volatile("hlt");
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__asm__ volatile("cli");
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shell_read();
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key_buffer_print();
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__asm__ volatile("sti");
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}
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}
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