Added new startup logger, tab support and new iso image

README.md

@@ -34,7 +34,7 @@ After that, you can build iceOS just by running the command listed below.
 2. Type `make run` to start it in QEMU or `make bochs` to start it with bochs(only for debug purposes).
 
 You can also find a ISO file 
-[here](https://github.com/ice-bit/iceOS/raw/master/imgs/iceOS.iso)(md5sum: `342691301699a73102fa6a57abea6989`)
+[here](https://github.com/ice-bit/iceOS/raw/master/imgs/iceOS.iso)(md5sum: `5a969460e63eb5c4dcfa943dc2a3f39f`)
 
 ## Features
 iceOS has the following features:  
@@ -48,7 +48,7 @@ iceOS has the following features:
 - [ ] Usermode
 
 ## Tutorial
-I'm also writing a tutorial about this project. If you are interested about OS development and you're looking for a detailed _step-by-step_ tutorial, have a look at my [website](https://osdev.marcocetica.com).
+I'm also writing a tutorial about this project. If you are interested about OS development and you're looking for a detailed _step-by-step_ tutorial, have a look at my [website](https://marcocetica.com/bl).
 
 
 ## License

kernel/drivers/tty.c

@@ -22,7 +22,7 @@ void move_cursor(uint16_t pos) {
     outb(VGA_DATA_PORT, pos & 0x00FF);
 }
 
-void cursor_adv() {
+void cursor_adv() { // TODO: specify number of adv. with a parameter
     if(fb_col < VGA_WIDTH - 1)
         fb_col++;
     else
@@ -57,6 +57,8 @@ void kprint_c(uint8_t *buf, uint32_t len, uint8_t fg, uint8_t bg) {
         uint8_t c = buf[i];
         if(c == '\n' || c == '\r')
             newline();
+        else if(c == '\t')
+            tab();
          else {
             pos = fb_col + (fb_row * VGA_WIDTH);
             write_cell(pos, (uint8_t)c, fg, bg);
@@ -125,4 +127,9 @@ void newline() {
 
     fb_col = 1;
     move_cursor(fb_col + (fb_row * VGA_WIDTH));
-}
+}
+
+void tab() {
+    for(uint8_t i = 0; i < 4; i++)
+        cursor_adv(); // Increment cursor 4 times
+}

kernel/drivers/tty.h

@@ -46,7 +46,8 @@ enum TTY_COLORS {
 #define VGA_HIGH_BYTE 14
 #define VGA_LOW_BYTE 15
 
-/* Kernel's VGA API */
+/* Kernel's VGA API */ 
+// FIXME: Set these functions to static
 void write_cell(int16_t i, uint8_t c, uint8_t fg, uint8_t bg);
 void move_cursor(uint16_t pos);
 void cursor_adv();
@@ -59,5 +60,6 @@ void clear_prompt();
 void clear_row(uint8_t row);
 void scroll(); // Scroll one row
 void newline();
+void tab();
 
-#endif
+#endif

kernel/kernel_main.c

@@ -18,43 +18,45 @@
 
 #include <stdint.h>
 
+#define PRTOK printf("\n["); printf_color(" OK ", LIGHT_GREEN, BLACK); printf("]"); // Ugly hack to print "[ OK ]"
+#define PRTAT printf("\n["); printf_color(" ** ", LIGHT_BROWN, BLACK); printf("]"); // Ugly hack to print "[ * ]"
+
 void kernel_main() {
-    printf_color("\n[STATUS]", LIGHT_GREEN, BLACK);
-    printf_color(" - Loading kernel, wait please...", WHITE, BLACK);
+    printf("Loading kernel, wait please...");
 
     gdt_setup(); // Setup Global Descriptor Table
-    printf_color("\n[INFO]", LIGHT_CYAN, BLACK);
-    printf_color("   - Loaded GDT", WHITE, BLACK);
+    PRTOK
+    printf("   - Loaded GDT");
 
     idt_setup(); // Setup Interrupt Descriptor Table
-    printf_color("\n[INFO]", LIGHT_CYAN, BLACK);
-    printf_color("   - Loaded IDT", WHITE, BLACK);
+    PRTOK
+    printf("   - Loaded IDT");
 
     init_timer(1); // Initialize PIT driver
-    printf_color("\n[INFO]", LIGHT_CYAN, BLACK);
-    printf_color("   - Loaded PIT", WHITE, BLACK);
+    PRTOK
+    printf("   - Loaded PIT");
 
     init_keyboard(); // Initialize keyboard driver
-    printf_color("\n[INFO]", LIGHT_CYAN, BLACK);
-    printf_color("   - Loaded PS/2 driver", WHITE, BLACK);
+    PRTOK
+    printf("   - Loaded PS/2 driver");
 
     init_paging(); // Initialize paging
-    printf_color("\n[INFO]", LIGHT_CYAN, BLACK);
-    printf_color("   - Loaded Paging", WHITE, BLACK);
+    PRTOK
+    printf("   - Loaded Paging");
     
-    printf_color("\n[TEST]", LIGHT_BROWN, BLACK); // Testing heap
-    printf_color("   - Testing heap..\n", LIGHT_BROWN, BLACK);
+    PRTAT
+    printf("   - Testing heap...\t");
 
     uint32_t x = kmalloc(32), y = kmalloc(32);
     printf("x: %x, y: %x", x, y);
     kfree((void*)y);
     uint32_t z = kmalloc(8);
-    printf(", z: %x\n", z); // If z is equal to y, heap's anti-fragmentation algorithm works
+    printf(", z: %x", z); // If z is equal to y, heap's anti-fragmentation algorithm works
     ASSERT(z == y);
     kfree((void*)z), kfree((void*)x);
 
-    printf_color("[STATUS]", LIGHT_GREEN, BLACK);
-    printf_color(" - Heap works!", WHITE, BLACK);
+    PRTOK
+    printf(" - Heap works!");
     
     iceos_ascii_logo();
     init_prompt(); // Initialize frame buffer

kernel/shell/shell.c

@@ -120,10 +120,10 @@ void processCommand(uint8_t *cmd) {
 
 void iceos_ascii_logo() {
     printf_color("\n\n"
-    "##############################################\n#",
+    "###################################################\n#",
     LIGHT_BLUE, BLACK);
-    printf_color(" iceOS - developed by Marco Cetica (c) 2019 ",
+    printf_color(" iceOS - developed by Marco Cetica (c) 2019-2020 ",
     LIGHT_MAGENTA, BLACK);
-    printf_color("#\n##############################################\n",
+    printf_color("#\n###################################################\n",
     LIGHT_BLUE, BLACK);
-}
+}