Changeset 71aeab4d in rtems

Timestamp:

Jan 31, 2000, 2:45:27 PM (20 years ago)

Author:

Joel Sherrill <joel.sherrill@…>

Branches:

4.10, 4.11, 4.8, 4.9, master

Children:

2fabda6

Parents:

49440a6e

Message:

Suggested modification from Rosimildo da Silva <rdasilva@…>
to make the BSP boot on netboot.

File:

• c/src/lib/libbsp/i386/pc386/start/start16.S (modified) (3 diffs)

c/src/lib/libbsp/i386/pc386/start/start16.S

@@ -76 +76 @@
         | Bare PC machines boot in real mode! We have to turn protected mode on.
         +---------------------------------------------------------------------*/
-#ifdef NEW_GAS
-        data32
-        addr32
-#endif  
+
         lgdt    gdtptr - start16        # load Global Descriptor Table
         movl    %cr0, %eax
@@ -131 +128 @@
 | longer on slower machines, however, it does not matter because we
 | are going to call this function only a few times
-
+!
+| NOTE: Saving the content of the EAX register just in case. - Rosimildo.
 +----------------------------------------------------------------------------*/
         .p2align 4
@@ -138 +136 @@
 delay:
 _delay:
-/*
+        pushl   %eax
+#if defined(USE_OUTB_FOR_DELAY)
         outb    %al, $0x80      # about 1uS delay on most machines
-*/
-/* 
+
+#else
+
         movl    $0x200, %eax
 delay1:
         dec     %eax
         jnz     delay1
-*/
+#endif
+        popl    %eax
         ret