107 lines
4.7 KiB
C
107 lines
4.7 KiB
C
#include "multiboot.h"
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#include "vga.h"
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#include "serial.h"
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#include "xtoa.h"
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static inline void outb(unsigned short port, unsigned char val) {
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asm volatile ("outb %0, %1" : : "a"(val), "Nd"(port) : "memory");
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}
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static inline unsigned char inb(unsigned short port) {
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unsigned char ret;
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asm volatile("inb %1, %0" : "=a"(ret) : "Nd"(port) : "memory");
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return ret;
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}
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void kmain (unsigned int mbootmagick, multiboot_info_t* mbootinfo) {
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// Cursor disabling
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outb(0x3D4, 0x0A);
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outb(0x3D5, 0x20);
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//cls();
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vga_init(VGA_COLOR_BLACK, VGA_COLOR_GRAY);
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vga_write_line("=== KoalemOS ===");
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if (serial_init() > 0) {
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vga_write_line_color("Serial initialization failed", VGA_COLOR_BLACK,
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VGA_COLOR_ORANGE);
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} else {
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vga_write_line("\nInitialized serial.");
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serial_write_string("\n=== KoalemOS ===\n");
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}
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vga_write("Checking multiboot loader: ");
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// Check multiboot header
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if (mbootmagick != MULTIBOOT_BOOTLOADER_MAGIC) {
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vga_write_color("INVALID MAGIC", VGA_COLOR_BLACK, VGA_COLOR_RED);
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return;
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}
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if (mbootinfo->flags & MULTIBOOT_INFO_BOOT_LOADER_NAME)
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vga_write((char *)mbootinfo->boot_loader_name);
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else
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vga_write_color("Unknown", VGA_COLOR_BLACK, VGA_COLOR_ORANGE);
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vga_write("\nMultiboot flags: ");
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vga_write(itoa(mbootinfo->flags, 2));
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serial_write_string("\nMultiboot flags: ");
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serial_write_string(itoa(mbootinfo->flags, 2));
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// Check videomode
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if (mbootinfo->flags & MULTIBOOT_INFO_VBE_INFO) {
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vga_write("\nVBE Mode: 0x");
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vga_write(itoa(mbootinfo->vbe_mode, 16));
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serial_write_string("\nVBE Mode: 0x");
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serial_write_string(itoa(mbootinfo->vbe_mode, 16));
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}
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if (mbootinfo->flags & MULTIBOOT_INFO_FRAMEBUFFER_INFO) {
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vga_write("\nFramebuffer: ");
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serial_write_string("\nFramebuffer: ");
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vga_write("address: 0x");
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serial_write_string("\n Address: 0x");
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vga_write(ultoa(mbootinfo->framebuffer_addr, 16));
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serial_write_string(ultoa(mbootinfo->framebuffer_addr, 16));
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serial_write_string("\n Dimensions: ");
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serial_write_string(itoa(mbootinfo->framebuffer_width, 10));
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serial_write_string("X");
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serial_write_string(itoa(mbootinfo->framebuffer_height, 10));
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serial_write_string("x");
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serial_write_string(itoa(mbootinfo->framebuffer_bpp, 10));
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serial_write_string("\n Pitch: ");
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serial_write_string(itoa(mbootinfo->framebuffer_pitch, 10));
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serial_write_string("\n RPos:");
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serial_write_string(itoa(mbootinfo->framebuffer_red_field_position, 10));
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serial_write_string("\n GPos:");
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serial_write_string(itoa(mbootinfo->framebuffer_green_field_position, 10));
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serial_write_string("\n BPos:");
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serial_write_string(itoa(mbootinfo->framebuffer_blue_field_position, 10));
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unsigned long *vmem;
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int i;
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for (i = 0; i < mbootinfo->framebuffer_height; i++) {
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vmem = mbootinfo->framebuffer_addr + i*mbootinfo->framebuffer_pitch + i*(mbootinfo->framebuffer_bpp/8);
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*vmem = 0xff<<mbootinfo->framebuffer_red_field_position;((char *)vmem)+=mbootinfo->framebuffer_bpp/8;
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*vmem = 0xff<<mbootinfo->framebuffer_red_field_position;((char *)vmem)+=mbootinfo->framebuffer_bpp/8;
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*vmem = 0xff<<mbootinfo->framebuffer_red_field_position;((char *)vmem)+=mbootinfo->framebuffer_bpp/8;
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*vmem = 0xff<<mbootinfo->framebuffer_red_field_position;((char *)vmem)+=mbootinfo->framebuffer_bpp/8;
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*vmem = 0xff<<mbootinfo->framebuffer_green_field_position;((char *)vmem)+=mbootinfo->framebuffer_bpp/8;
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*vmem = 0xff<<mbootinfo->framebuffer_green_field_position;((char *)vmem)+=mbootinfo->framebuffer_bpp/8;
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*vmem = 0xff<<mbootinfo->framebuffer_green_field_position;((char *)vmem)+=mbootinfo->framebuffer_bpp/8;
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*vmem = 0xff<<mbootinfo->framebuffer_green_field_position;((char *)vmem)+=mbootinfo->framebuffer_bpp/8;
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*vmem = 0xff<<mbootinfo->framebuffer_blue_field_position;((char *)vmem)+=mbootinfo->framebuffer_bpp/8;
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*vmem = 0xff<<mbootinfo->framebuffer_blue_field_position;((char *)vmem)+=mbootinfo->framebuffer_bpp/8;
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*vmem = 0xff<<mbootinfo->framebuffer_blue_field_position;((char *)vmem)+=mbootinfo->framebuffer_bpp/8;
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*vmem = 0xff<<mbootinfo->framebuffer_blue_field_position;((char *)vmem)+=mbootinfo->framebuffer_bpp/8;
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}
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} else {
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vga_write_color("\nVideo info not available", VGA_COLOR_BLACK, VGA_COLOR_RED);
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serial_write_string("\nVideo info not available");
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return;
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}
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vga_write_line("\nExecution finished, halting...");
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serial_write_string("\nExecution finished, halting...");
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}
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