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I traced the problem to a missing feature in the Embedded Controller
firmware for XO-1 .<tt> </tt><a
href="http://dev.laptop.org/ticket/11347">http://dev.laptop.org/ticket/11347</a>
. Richard and I will work on it soon, during down time in our
impending trip to Shanghai.<br>
<br>
<br>
On 10/17/2011 2:11 AM, Esteban Bordón wrote:
<blockquote
cite="mid:CAN+vnnohoCvOrkvaLW5n8oz9q0-K3e7CKWWCLUaeJk1HqEGA-A@mail.gmail.com"
type="cite">I've tried in 2 XO 1.0 and I have the same behaviour
in both laptops. <br>
For each boot, the laptop repeats steps b and c, then, laptop
powers off. If XO have "rt" tag will never boot.<br>
<br>
<div class="gmail_quote">
2011/10/14 Mitch Bradley <span dir="ltr"><<a
moz-do-not-send="true" href="mailto:wmb@laptop.org"
target="_blank">wmb@laptop.org</a>></span><br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000"> The most likely
explanation is that OFW had to power off in order to
re-enable writing to the SPI FLASH. That can happen if the
last reboot was from Linux. See <a moz-do-not-send="true"
href="http://dev.laptop.org/ticket/4397" target="_blank">http://dev.laptop.org/ticket/4397</a><br>
<br>
Unless that bug is fixed, the process will be:<br>
<br>
a) Linux reboots<br>
b) OFW runs rtc-rollback? and tries to write the new
timestamp SPI FLASH<br>
c) OFW is unable to perform the write because SPI FLASH is
locked<br>
d) OFW reboots, using the EC command that unlocks SPI FLASH<br>
e) OFW runs rtc-rollback? and sucessfully writes the new
timestamp'<br>
<br>
The net result is that reboots will take slightly longer
when anti-rollback is enabled.
<div>
<div><br>
<br>
On 10/14/2011 2:53 AM, Esteban Bordón wrote:
<blockquote type="cite">
<div class="gmail_quote">2011/10/11 Esteban Bordón <span
dir="ltr"><<a moz-do-not-send="true"
href="mailto:ebordon@plan.ceibal.edu.uy"
target="_blank">ebordon@plan.ceibal.edu.uy</a>></span><br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
Hi all,<br>
<br>
I'm trying to test the RTCAR including on OFW
Q2E46 by following the steps indicated in <a
moz-do-not-send="true"
href="http://wiki.laptop.org/go/RTC_Anti-rollback#Testing_Rollback_Detection"
target="_blank">http://wiki.laptop.org/go/RTC_Anti-rollback#Testing_Rollback_Detection</a>.<br>
<br>
I added the "rt" tag, but when I run command<br>
<pre>ok rtc-rollback? .
<font style="font-family:arial,helvetica,sans-serif" size="2">
</font><font style="font-family:arial,helvetica,sans-serif" size="2">the laptop powers off.
Is it a normal behaviour?</font>
cheers,
<font color="#888888">Esteban
</font></pre>
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