Scroll some pixels on the fuckin screenHEADmain

1 files changed, 24 insertions, 19 deletions

diff --git a/src/kernel.c b/src/kernel.c
index 2c2afcc..dacc47e 100644
--- a/src/kernel.c
+++ b/src/kernel.c
@@ -1,28 +1,33 @@
-#include "utils.h"
-#include "multiboot.h"
 #include <stddef.h>
 #include <stdint.h>
 #include <stdbool.h>
+#include "utils.h"
+#include "multiboot.h"
+#include "io.h"
+#include "video.h"
 
-void validate_multiboot
+void validate_multiboot(multiboot_info_t* p_multiboot_info, uint32_t magic_response) {
+    macaroni_assert(magic_response == 0x2BADB002, "im not a bad boo twooo");
+    macaroni_assert(p_multiboot_info->flags != 0, "version flag being zero is not a good sign");
+}
 
-void cmain(void) {
-    uint32_t magic_response;
-    multiboot_info_t* p_multiboot_info;
-    asm("\t movl %%eax,%0" : "=r"(magic_response));
-    asm("\t movl %%ebx,%0" : "=r"(p_multiboot_info));
+// Stack: [...Bottom] (%ebx, %eax) [...Top]
+void cmain(uint32_t magic_response, multiboot_info_t* p_multiboot_info) {
+    validate_multiboot(p_multiboot_info, magic_response);
 
-    macaroni_assert(magic_response == 0x2BADB002, "im not a bad boo twooo");
-    macaroni_assert(p_multiboot_info->framebuffer_width == 640, "not gods width");
-    macaroni_assert(p_multiboot_info->framebuffer_height == 480, "not gods height");
-    macaroni_assert(p_multiboot_info->framebuffer_bpp == 16, "not gods bpp");
-    macaroni_assert(p_multiboot_info->framebuffer_type == MULTIBOOT_FRAMEBUFFER_TYPE_RGB, "not gods fbtype");
-    macaroni_assert(p_multiboot_info->framebuffer_red_field_position == 1, "bpp not formatted correctly");
+    init_serial();
+    init_video(p_multiboot_info);
 
-    void *fb = (void *) (unsigned long) p_multiboot_info->framebuffer_addr;
-    uint8_t* pixel = fb;
-    for (int i = 0; i < 10000; i++) {
-        *(pixel + i) = i * 2;
+    macaroni_color colors[] = { RED, GREEN, BLUE };
+    uint32_t i = 0;
+    while(true) {
+        for (uint32_t y = 0; y < MULTIBOOT_GODS_HEIGHT; y++) {
+            for (uint32_t x = 0; x < MULTIBOOT_GODS_WIDTH; x++) {
+                put_pixel(colors[(i + y / 10) % 3], x, y);
+            }
+        }
+        // "sleep"
+        for (int _k = 0; _k < 10000000; _k++) {}
+        i++;
     }
-
 }