[openfirmware] [commit] r3324 - cpu/arm/olpc

[repository service]

Author: quozl
Date: Sat Sep 22 08:33:19 2012
New Revision: 3324
URL: http://tracker.coreboot.org/trac/openfirmware/changeset/3324

Log:
OLPC XO-1.75 XO-4 - ensure RTC SQWE is enabled before using it as SoC slow clock, related to CForth 2cf4585dace915da58fe47282a1b92db815a23b3

Modified:
   cpu/arm/olpc/build-fw.fth
   cpu/arm/olpc/rtc.fth

Modified: cpu/arm/olpc/build-fw.fth
==============================================================================
--- cpu/arm/olpc/build-fw.fth	Sat Sep 22 04:38:47 2012	(r3323)
+++ cpu/arm/olpc/build-fw.fth	Sat Sep 22 08:33:19 2012	(r3324)
@@ -316,6 +316,8 @@
 fload ${BP}/cpu/arm/olpc/rtc.fth
 stand-init: RTC
    " /i2c at d4031000/rtc" open-dev  clock-node !
+   \ use RTC 32kHz clock as SoC external slow clock
+   h# 38 mpmu@ 1 or h# 38 mpmu!
 ;
 
 warning @ warning off

Modified: cpu/arm/olpc/rtc.fth
==============================================================================
--- cpu/arm/olpc/rtc.fth	Sat Sep 22 04:38:47 2012	(r3323)
+++ cpu/arm/olpc/rtc.fth	Sat Sep 22 08:33:19 2012	(r3324)
@@ -40,7 +40,12 @@
    else                        ( value )
       drop true                ( true )
    then                        ( okay? )
+
+   \ manage legacy RTC CMOS usage
    ?clear
+
+   \ enable 32kHz clock output
+   h# b3 7 rtc!
 ;
 : close  ( -- )
 ;