<html xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns="http://www.w3.org/TR/REC-html40">
<head>
<meta http-equiv=Content-Type content="text/html; charset=us-ascii">
<meta name=Generator content="Microsoft Word 11 (filtered medium)">
<style>
<!--
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:Arial;}
h1
{margin-top:12.0pt;
margin-right:0in;
margin-bottom:3.0pt;
margin-left:.3in;
text-indent:-.3in;
page-break-after:avoid;
mso-list:l0 level1 lfo3;
font-size:16.0pt;
font-family:Arial;}
h2
{margin-top:0in;
margin-right:0in;
margin-bottom:12.0pt;
margin-left:.4in;
text-indent:-.4in;
page-break-after:avoid;
mso-list:l0 level2 lfo3;
font-size:14.0pt;
font-family:Arial;}
h3
{margin-top:12.0pt;
margin-right:0in;
margin-bottom:3.0pt;
margin-left:.5in;
text-indent:-.5in;
page-break-after:avoid;
mso-list:l1 level3 lfo6;
font-size:13.0pt;
font-family:Arial;}
a:link, span.MsoHyperlink
{color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{color:purple;
text-decoration:underline;}
span.EmailStyle17
{mso-style-type:personal-compose;
font-family:Arial;
color:windowtext;}
@page Section1
{size:8.5in 11.0in;
margin:.5in .5in .5in .5in;}
div.Section1
{page:Section1;}
/* List Definitions */
@list l0
{mso-list-id:1143350910;
mso-list-template-ids:1338282562;}
@list l0:level1
{mso-level-style-link:"Heading 1";
mso-level-text:%1;
mso-level-tab-stop:.3in;
mso-level-number-position:left;
margin-left:.3in;
text-indent:-.3in;}
@list l0:level2
{mso-level-style-link:"Heading 2";
mso-level-text:"%1\.%2";
mso-level-tab-stop:.4in;
mso-level-number-position:left;
margin-left:.4in;
text-indent:-.4in;}
@list l0:level3
{mso-level-text:"%1\.%2\.%3";
mso-level-tab-stop:.5in;
mso-level-number-position:left;
margin-left:.5in;
text-indent:-.5in;}
@list l0:level4
{mso-level-text:"%1\.%2\.%3\.%4";
mso-level-tab-stop:.6in;
mso-level-number-position:left;
margin-left:.6in;
text-indent:-.6in;}
@list l0:level5
{mso-level-text:"%1\.%2\.%3\.%4\.%5";
mso-level-tab-stop:.7in;
mso-level-number-position:left;
margin-left:.7in;
text-indent:-.7in;}
@list l0:level6
{mso-level-text:"%1\.%2\.%3\.%4\.%5\.%6";
mso-level-tab-stop:.8in;
mso-level-number-position:left;
margin-left:.8in;
text-indent:-.8in;}
@list l0:level7
{mso-level-text:"%1\.%2\.%3\.%4\.%5\.%6\.%7";
mso-level-tab-stop:.9in;
mso-level-number-position:left;
margin-left:.9in;
text-indent:-.9in;}
@list l0:level8
{mso-level-text:"%1\.%2\.%3\.%4\.%5\.%6\.%7\.%8";
mso-level-tab-stop:1.0in;
mso-level-number-position:left;
margin-left:1.0in;
text-indent:-1.0in;}
@list l0:level9
{mso-level-text:"%1\.%2\.%3\.%4\.%5\.%6\.%7\.%8\.%9";
mso-level-tab-stop:1.1in;
mso-level-number-position:left;
margin-left:1.1in;
text-indent:-1.1in;}
@list l1
{mso-list-id:1860200171;
mso-list-template-ids:1400561736;}
@list l1:level1
{mso-level-text:%1;
mso-level-tab-stop:.3in;
mso-level-number-position:left;
margin-left:.3in;
text-indent:-.3in;}
@list l1:level2
{mso-level-text:"%1\.%2";
mso-level-tab-stop:.4in;
mso-level-number-position:left;
margin-left:.4in;
text-indent:-.4in;}
@list l1:level3
{mso-level-reset-level:level2;
mso-level-style-link:"Heading 3";
mso-level-text:"%1\.%2\.%3";
mso-level-tab-stop:.5in;
mso-level-number-position:left;
margin-left:.5in;
text-indent:-.5in;}
@list l1:level4
{mso-level-text:"%1\.%2\.%3\.%4";
mso-level-tab-stop:.6in;
mso-level-number-position:left;
margin-left:.6in;
text-indent:-.6in;}
@list l1:level5
{mso-level-text:"%1\.%2\.%3\.%4\.%5";
mso-level-tab-stop:.7in;
mso-level-number-position:left;
margin-left:.7in;
text-indent:-.7in;}
@list l1:level6
{mso-level-text:"%1\.%2\.%3\.%4\.%5\.%6";
mso-level-tab-stop:.8in;
mso-level-number-position:left;
margin-left:.8in;
text-indent:-.8in;}
@list l1:level7
{mso-level-text:"%1\.%2\.%3\.%4\.%5\.%6\.%7";
mso-level-tab-stop:.9in;
mso-level-number-position:left;
margin-left:.9in;
text-indent:-.9in;}
@list l1:level8
{mso-level-text:"%1\.%2\.%3\.%4\.%5\.%6\.%7\.%8";
mso-level-tab-stop:1.0in;
mso-level-number-position:left;
margin-left:1.0in;
text-indent:-1.0in;}
@list l1:level9
{mso-level-text:"%1\.%2\.%3\.%4\.%5\.%6\.%7\.%8\.%9";
mso-level-tab-stop:1.1in;
mso-level-number-position:left;
margin-left:1.1in;
text-indent:-1.1in;}
@list l2
{mso-list-id:2077240681;
mso-list-template-ids:-762429638;}
@list l2:level1
{mso-level-text:%1;
mso-level-tab-stop:.3in;
mso-level-number-position:left;
margin-left:.3in;
text-indent:-.3in;}
@list l2:level2
{mso-level-text:"%1\.%2";
mso-level-tab-stop:.4in;
mso-level-number-position:left;
margin-left:.4in;
text-indent:-.4in;}
@list l2:level3
{mso-level-text:"%1\.%2\.%3";
mso-level-tab-stop:.5in;
mso-level-number-position:left;
margin-left:.5in;
text-indent:-.5in;}
@list l2:level4
{mso-level-text:"%1\.%2\.%3\.%4";
mso-level-tab-stop:.6in;
mso-level-number-position:left;
margin-left:.6in;
text-indent:-.6in;}
@list l2:level5
{mso-level-text:"%1\.%2\.%3\.%4\.%5";
mso-level-tab-stop:.7in;
mso-level-number-position:left;
margin-left:.7in;
text-indent:-.7in;}
@list l2:level6
{mso-level-text:"%1\.%2\.%3\.%4\.%5\.%6";
mso-level-tab-stop:.8in;
mso-level-number-position:left;
margin-left:.8in;
text-indent:-.8in;}
@list l2:level7
{mso-level-text:"%1\.%2\.%3\.%4\.%5\.%6\.%7";
mso-level-tab-stop:.9in;
mso-level-number-position:left;
margin-left:.9in;
text-indent:-.9in;}
@list l2:level8
{mso-level-text:"%1\.%2\.%3\.%4\.%5\.%6\.%7\.%8";
mso-level-tab-stop:1.0in;
mso-level-number-position:left;
margin-left:1.0in;
text-indent:-1.0in;}
@list l2:level9
{mso-level-text:"%1\.%2\.%3\.%4\.%5\.%6\.%7\.%8\.%9";
mso-level-tab-stop:1.1in;
mso-level-number-position:left;
margin-left:1.1in;
text-indent:-1.1in;}
ol
{margin-bottom:0in;}
ul
{margin-bottom:0in;}
-->
</style>
</head>
<body lang=EN-US link=blue vlink=purple>
<div class=Section1>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt'>I
realize I’m asking below about u-boot, but I’m really trying to
better understand how initrd should work with device trees. I have also
posted a question to the u-boot user group.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt'>When
I build the device tree blob into the kernel image and load the kernel image
with my probe, it finds the initrd fine just using root=/dev/ram and with the
kernel configured properly.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt'>With
the same kernel configuration, when I run with u-boot, the only way for the
kernel to find the initrd is to put linux,initrd-start and initrd-end in my
device tree. I found these items in an old patch from David Gibson and I’m
not sure if or when they should be used.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt'>I
also notice in booting-without-of.txt, off_mem_rsvmap, but it’s not clear
if and how I should be using it to help the problem.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt'>Thanks,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt'>John<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt'><o:p> </o:p></span></font></p>
</div>
<br clear=all> This email and any attachments are intended for the sole use of the named recipient(s) and contain(s) confidential information that may be proprietary, privileged or copyrighted under applicable law. If you are not the intended recipient, do not read, copy, or forward this email message or any attachments. Delete this email message and any attachments immediately.
</body>
</html>