[commit] r2549 - cpu/arm/mmp2

[repository service]

Author: quozl
Date: Fri Sep 30 01:59:27 2011
New Revision: 2549
URL: http://tracker.coreboot.org/trac/openfirmware/changeset/2549

Log:
OLPC XO-1.75 - add thermal watchdog disable used in testing

Modified:
   cpu/arm/mmp2/thermal.fth

Modified: cpu/arm/mmp2/thermal.fth
==============================================================================
--- cpu/arm/mmp2/thermal.fth	Fri Sep 30 00:51:18 2011	(r2548)
+++ cpu/arm/mmp2/thermal.fth	Fri Sep 30 01:59:27 2011	(r2549)
@@ -8,6 +8,8 @@
    h# 10000 thermal-base io!  \ Enable sensing
 ;

+\ thermal watchdog is enabled by CForth
+
 : cpu-temperature  ( -- celcius )
    0                   ( acc )
    d# 100 0  do        ( acc )  \ Accumulate 100 samples
@@ -22,6 +24,28 @@
    d# 52940 -  d# 196 /  ( celcius )
 ;

+: ?thermal  ( -- )
+   cpu-temperature d# 70 > abort " CPU too hot"
+;
+
+[ifndef] wdtpcr
+main-pmu-pa h# 200 + constant wdtpcr
+[then]
+
+\ disable thermal watchdog, please use only in controlled conditions
+: thermal-off
+   wdtpcr io@
+   b# 0101.1111 and
+   wdtpcr io!
+;
+
+: thermal-on
+   wdtpcr io@
+   b# 1101.1111 and
+   b# 1000.0000 or
+   wdtpcr io!
+;
+
 thermal-base h# 4 +  value wd-thresh
 : wd-thresh@  ( -- n )  wd-thresh io@  ;
 : wd-thresh!  ( n -- )  wd-thresh io!  ;