[openfirmware] [commit] r2983 - cpu/arm/olpc/1.75
repository service
svn at openfirmware.info
Mon May 21 10:59:19 CEST 2012
Author: quozl
Date: Mon May 21 10:59:18 2012
New Revision: 2983
URL: http://tracker.coreboot.org/trac/openfirmware/changeset/2983
Log:
OLPC XO-1.75 - avoid Data Abort during preparation for Linux kernel load when a PL2303 USB serial adapter is present, by removing the device from the console multiplexor and closing it. #11871.
Modified:
cpu/arm/olpc/1.75/usb.fth
Modified: cpu/arm/olpc/1.75/usb.fth
==============================================================================
--- cpu/arm/olpc/1.75/usb.fth Fri May 18 08:06:49 2012 (r2982)
+++ cpu/arm/olpc/1.75/usb.fth Mon May 21 10:59:18 2012 (r2983)
@@ -96,6 +96,7 @@
alias p2 probe-usb
0 value usb-keyboard-ih
+0 value usb-serial-ih
: attach-usb-keyboard ( -- )
" usb-keyboard" expand-alias if ( devspec$ )
@@ -117,19 +118,34 @@
then
;
-: ?usb-keyboard ( -- )
- attach-usb-keyboard
+: attach-usb-serial ( -- )
" /usb/serial" open-dev ?dup if
- add-input
+ to usb-serial-ih
+ usb-serial-ih add-input
+ then
+;
+
+: detach-usb-serial ( -- )
+ usb-serial-ih if
+ usb-serial-ih remove-input
+ usb-serial-ih close-dev
+ 0 to usb-serial-ih
then
;
+: ?usb-keyboard ( -- )
+ attach-usb-keyboard
+ attach-usb-serial
+;
+
: usb-quiet ( -- )
detach-usb-keyboard
+ detach-usb-serial
" /usb" " reset-usb" execute-device-method drop
;
: suspend-usb ( -- )
+ detach-usb-serial
detach-usb-keyboard
" /usb" " sleep" execute-device-method drop
;
@@ -145,6 +161,7 @@
then
silent-probe-usb
attach-usb-keyboard
+ attach-usb-serial
;
\ Unlink every node whose phys.hi component matches port
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