[boot] Refine boot stages.

bootloader/stage1/main.c

@@ -32,8 +32,9 @@ void read(unsigned char count, unsigned char sector, short segment, short offset
  */
 void main()
 {
-	PRINT("Loading...\r\n");
+	PRINT("Loading... ");
 	read(2,2,0,0x7e00);
+	PRINT("Ready.\r\n");
 
 	/* Let's do this... */
 	__asm__ __volatile__ ("jmp $0x00, $0x7e00");

bootloader/stage1/start.s

@@ -1,17 +1,5 @@
-# Mr. Boots - Stage 1
-# Find Stage 2 and immediately load it.
-#
-# NOTICE: This stage should be loaded from a partition on
-#         an EXT2-only disk without a partition table.
-#         If you want to use it with a different set up
-#         you need to patch it to include an MBR header
-#         and all the other necessary bits.
-#
-# Part of the ToAruOS Distribution of the ToAru Kernel
-#
-# NCSA license is available from the root directory of the
-# source tree in which this file is shipped.
 #
+# Mr. Boots - Stage 1 (ASM entry point)
 #
 .code16
 

bootloader/stage2/main.c

@@ -7,22 +7,16 @@
  */
 __asm__(".code16gcc\n");
 
-void kprint(short s)
-{
-	__asm__ __volatile__ ("movw %0, %%si\n"
-						  "call _print" : : "l" ((short)s));
-}
+#define PRINT(s) __asm__ ("movw %0, %%si\ncall _print" : : "l"((short)(int)s))
 
 /*
  * Main entry point
  */
-int main() {
-	kprint((short)(int)"Welcome to C!\r\n");
+void main()
+{
+	PRINT("== Mr. Boots Stage 2 Bootloader ==\r\n");
 
 	/* And that's it for now... */
 	__asm__ __volatile__ ("hlt");
 	while (1) {};
-
-	/* Uh oh */
-	return -1;
 }

bootloader/stage2/start.s

@@ -15,15 +15,8 @@ _start:
 
         movw $0x7bf0,%sp # stack pointer
 
-        movw $bmsga, %si # Print "Starting..."
-        calll _print     # ...
-
         .extern main     # Jump the C main entry point...
-        calll main
-
-        movw $bmsgb, %si # We should not be here...
-        calll _print     # ...
-        hlt
+        jmp main
 
 _print: 
         movb $0x0E,%ah # set registers for
@@ -37,10 +30,3 @@ _print.next:
         jmp _print.next # continue
 _print.return: 
         retl
-
-.data
-
-bmsga:
-        .string "Starting Stage 2...\r\n"
-bmsgb:
-        .string "Critical failure!\r\n"