[coreboot] [PATCH] timeout during PS/2 keyboard init
Scott Duplichan
scott at notabs.org
Wed Sep 8 21:11:51 CEST 2010
Thanks Marc. This patch avoids a timeout during PS/2 keyboard
initialization. It can reduce KBC init time by up to 400 ms on
real hardware, and by a minute or so on AMD simnow.
Signed-off-by: Scott Duplichan <scott at notabs.org>
Index: src/pc80/keyboard.c
===================================================================
--- src/pc80/keyboard.c (revision 5788)
+++ src/pc80/keyboard.c (working copy)
@@ -242,7 +242,7 @@
outb(0x60, KBD_COMMAND);
if (!kbc_input_buffer_empty()) return;
outb(0x61, KBD_DATA); /* send cmd: enable keyboard and IRQ 1 */
- if (kbc_output_buffer_full()) {
+ if (kbc_input_buffer_empty()) {
printk(BIOS_ERR, "Timeout during final keyboard enable\n");
return;
}
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