If the system in question does not have a superIO, then a read of
0x64 will return 0xFF and we will loop forever.
Signed-off-by: Jordan Crouse <jordan.crouse@amd.com>
Acked-by: Patrick Georgi <patrick.georgi@coresystems.de>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3675
2b7e53f0-3cfb-0310-b3e9-
8179ed1497e1
while (inb(0x64) & 2);
}
-
int keyboard_havechar(void)
{
unsigned char c = inb(0x64);
- return c & 1;
+ return (c == 0xFF) ? 0 : c & 1;
}
unsigned char keyboard_get_scancode(void)
u8 mode;
map = &keyboard_layouts[0];
+ /* If 0x64 returns 0xff, then we have no keyboard
+ * controller */
+
+ if (inb(0x64) == 0xFF)
+ return;
+
/* Empty keyboard buffer */
while (keyboard_havechar()) keyboard_getchar();