84 lines
2.7 KiB
C
84 lines
2.7 KiB
C
#include "multiboot.h"
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#include "framebuffer.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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int serial_initialized = serial_init();
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serial_write_string("\n=== KoalemOS ===\n");
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// Check multiboot header
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if (mbootmagick != MULTIBOOT_BOOTLOADER_MAGIC) {
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return;
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}
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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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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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serial_write_string("\nVideo info not available");
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return;
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}
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serial_write_string("\nFramebuffer: ");
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serial_write_string("\n Address: 0x");
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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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serial_write_string("\nMemory: ");
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serial_write_string("\n lower: ");
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serial_write_string(uitoa(mbootinfo->mem_lower, 10));
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serial_write_string(" k");
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serial_write_string("\n upper: ");
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serial_write_string(uitoa(mbootinfo->mem_upper/1024, 10));
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serial_write_string(" M");
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initfb(mbootinfo->framebuffer_addr, mbootinfo->framebuffer_width, mbootinfo->framebuffer_height, mbootinfo->framebuffer_bpp, mbootinfo->framebuffer_pitch, mbootinfo->framebuffer_red_field_position, mbootinfo->framebuffer_green_field_position, mbootinfo->framebuffer_blue_field_position);
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int x, y, i;
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unsigned char c = 0;
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for(;;) {
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for(y=0; y < mbootinfo->framebuffer_height; y++) {
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for(x=0; x < mbootinfo->framebuffer_width; x++) {
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putpixel(x, y, c, c, c, 0xff);
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}
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}
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c+=4;
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}
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serial_write_string("\nExecution finished, halting...");
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}
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