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80 lines
2.0 KiB
80 lines
2.0 KiB
#include "kernel.h"
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void print_kernel_motd() {
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set_cursor_pos(0, 0);
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printalign(" ___ ____ ", BANNER_COLOR, MIDDLE);
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printalign(" ___ / _ \\/ ___| ", BANNER_COLOR, MIDDLE);
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printalign(" / _ \\ | | \\___ \\ ", BANNER_COLOR, MIDDLE);
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printalign("| __/ |_| |___) | A x86 operating system,", BANNER_COLOR, MIDDLE);
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printalign(" \\___|\\___/|____/ licenced under GPL-2.0", BANNER_COLOR, MIDDLE);
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println("");
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printalign("Fun fact: e = lim[h->0] (1+h)^(1/h)", DEFAULT_COLOR, MIDDLE);
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printalign("Created by E. Almqvist", DEFAULT_COLOR, MIDDLE);
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println("");
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}
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void print_kernel_stats() {
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char* buf;
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set_cursor_pos(0, 12);
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// Memory stats
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print("MEMORY BITMAP: ", 0x0f);
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buf = itoa(get_bitmap(), buf, 2);
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println(buf, DEFAULT_COLOR);
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println("");
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println("BIOS E820", 0x0f);
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print("Loaded Entries: ", DEFAULT_COLOR);
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uint entries = get_phys_mem_size();
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buf = itoa(entries, buf, 10);
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println(buf, DEFAULT_COLOR);
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print("Physical Memory Size: ");
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println("?", DEFAULT_COLOR);
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println("");
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// VGA stats
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println("Display (VGA)", 0x0f);
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print("Memory Range: ", DEFAULT_COLOR);
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buf = itoa(VGA_ADDRESS, buf, 16);
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print(buf, DEFAULT_COLOR);
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print(" - ");
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buf = itoa(VGA_ADDRESS_MAX, buf, 16);
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println(buf, DEFAULT_COLOR);
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print("Screen Dimensions: ", DEFAULT_COLOR);
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buf = itoa(MAX_COLS, buf, 10);
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print(buf, DEFAULT_COLOR);
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print("x");
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buf = itoa(MAX_ROWS, buf, 10);
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println(buf, DEFAULT_COLOR);
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}
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void kernel_init() {
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idt_init(); // Enable interupts
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vga_init(); // Initialize the screen
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// Allocate VGA memory range
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pm_malloc_range(VGA_ADDRESS, VGA_ADDRESS_MAX, true); // force alloc the VGA range
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// ENABLE PAGING
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// TODO: make this work
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// enable_paging();
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clear_screen();
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print_kernel_motd();
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print_kernel_stats();
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char* buf;
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uint i = 0;
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set_cursor_pos(0, 9);
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printalign("[Ticks since boot]", 0xf0, MIDDLE);
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while(true) {
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set_cursor_pos(0, 10);
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buf = itoa(i, buf, 10);
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printalign(buf, 0x0f, MIDDLE);
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++i;
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}
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}
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