46 lines
1.3 KiB
C
46 lines
1.3 KiB
C
#include "multiboot.h"
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#include "vga.h"
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// static inline void outb(unsigned int 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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void kmain (unsigned int mbootmagick, multiboot_info_t* mbootinfo) {
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// Cursor disabling
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// TODO: outb function
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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_GREY, VGA_COLOR_BLACK);
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vga_write_line("=== KoalemOS ===");
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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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vga_write(mbootinfo->boot_loader_name);
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// Check videomode
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vga_write("\nVideomode: ");
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switch (mbootinfo->vbe_mode) {
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case MULTIBOOT_FRAMEBUFFER_TYPE_INDEXED:
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vga_write("Indexed");
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break;
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case MULTIBOOT_FRAMEBUFFER_TYPE_RGB:
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vga_write("RGB");
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break;
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case MULTIBOOT_FRAMEBUFFER_TYPE_EGA_TEXT:
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vga_write("EGA TEXT");
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break;
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default:
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vga_write_color("UNKNOWN", VGA_COLOR_BLACK, VGA_COLOR_RED);
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return;
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}
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vga_write_line("\nExecution finished, halting...");
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}
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