[OpenBIOS] r704 - cpu/x86/pc/olpc

[svn at openbios.org]

Author: wmb
Date: 2007-10-29 23:52:22 +0100 (Mon, 29 Oct 2007)
New Revision: 704

Modified:
   cpu/x86/pc/olpc/security.fth
Log:
Added a time delay before reflashing the SPI FLASH, giving the EC time
to detect the battery.  Otherwise the check for battery presence fails.


Modified: cpu/x86/pc/olpc/security.fth
===================================================================
--- cpu/x86/pc/olpc/security.fth	2007-10-29 22:02:39 UTC (rev 703)
+++ cpu/x86/pc/olpc/security.fth	2007-10-29 22:52:22 UTC (rev 704)
@@ -624,6 +624,14 @@
    u<=
 ;
 
+\ Wait until the time-stamp counter indicates a certain time after startup.
+: wait-until  ( ms -- )
+   begin   ( ms )
+      dup  tsc@ ms-factor um/mod nip  ( ms ms time-ms )
+   u<= until  ( ms )
+   drop
+;
+
 : load-from-device  ( devname$ -- done? )
 
    d# 16 0  +icon-xy  show-dot
@@ -647,12 +655,6 @@
             true to file-loaded?
             " Updating firmware" ?lease-debug-cr
 
-            ['] ?enough-power  catch  ?dup  if
-               visible
-               .error
-               security-failure
-            then
-
             ec-indexed-io-off?  if
                visible
                ." Restarting to enable SPI FLASH writing."  cr
@@ -661,6 +663,14 @@
                security-failure
             then
 
+            d# 12,000 wait-until   \ Wait for EC to notice the battery
+
+            ['] ?enough-power  catch  ?dup  if
+               visible
+               .error
+               security-failure
+            then
+
             \ Latch alternate? flag for next startup
             alternate?  if  [char] A h# 82 cmos!  then