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<p class=MsoPlainText><font size=2 face="Courier New"><span lang=EN-IN
style='font-size:10.0pt'>Hi,<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face="Courier New"><span lang=EN-IN
style='font-size:10.0pt'> Thanks!<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face="Courier New"><span lang=EN-IN
style='font-size:10.0pt'><o:p> </o:p></span></font></p>
<p class=MsoPlainText><font size=2 face="Courier New"><span lang=EN-IN
style='font-size:10.0pt'>As you said memory commands work in any memory region,
is it only the internal flash memory or also external flash memory? By external
memory I mean to say that the NOR or NAND memory is not in the processor chip
(ARM). But NOR/NAND memories have separate chip and memory is mapped on to the ARM
memory map.<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face="Courier New"><span lang=EN-IN
style='font-size:10.0pt'><o:p> </o:p></span></font></p>
<p class=MsoPlainText><font size=2 face="Courier New"><span lang=EN-IN
style='font-size:10.0pt'>I suppose NAND memory has different command set like
nand info, etc. Then are these (mm, mw, md, etc) commands applicable for NAND
memory also?<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face="Courier New"><span lang=EN-IN
style='font-size:10.0pt'><o:p> </o:p></span></font></p>
<p class=MsoPlainText><font size=2 face="Courier New"><span lang=EN-IN
style='font-size:10.0pt'>With regards and thanks<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face="Courier New"><span lang=EN-IN
style='font-size:10.0pt'>Aniruddha Herekar<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face="Courier New"><span lang=EN-IN
style='font-size:10.0pt'> <o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face="Courier New"><span lang=EN-IN
style='font-size:10.0pt'><o:p> </o:p></span></font></p>
<p class=MsoPlainText align=left style='text-align:left'><font size=2
face="Courier New"><span style='font-size:10.0pt'>-----Original Message-----<br>
From: S. Egbert [mailto:s.egbert@sbcglobal.net] <br>
Sent: Thursday, February 09, 2006 11:19 AM<br>
To: Herekar, Aniruddha<br>
Cc: u-boot-users@lists.sourceforge.net<br>
Subject: Re: [U-Boot-Users] Regarding memory commands</span></font></p>
<p class=MsoPlainText><font size=2 face="Courier New"><span lang=EN-IN
style='font-size:10.0pt'><o:p> </o:p></span></font></p>
<p class=MsoPlainText><font size=2 face="Courier New"><span lang=EN-IN
style='font-size:10.0pt'>Herekar, Aniruddha wrote:<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face="Courier New"><span lang=EN-IN
style='font-size:10.0pt'>> Does memory commands mm, mw, mn and tftp work
only with RAM memory and<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face="Courier New"><span lang=EN-IN
style='font-size:10.0pt'>> not flash (nor or nand) memory?<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face="Courier New"><span lang=EN-IN
style='font-size:10.0pt'>> <o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face="Courier New"><span lang=EN-IN
style='font-size:10.0pt'>> If so are there any other commands other than <st1:PersonName
w:st="on">'</st1:PersonName>cp<st1:PersonName w:st="on">'</st1:PersonName> that
can be used to<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face="Courier New"><span lang=EN-IN
style='font-size:10.0pt'>> write into flash (nor or nand) memory?<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face="Courier New"><span lang=EN-IN
style='font-size:10.0pt'>> <o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face="Courier New"><span lang=EN-IN
style='font-size:10.0pt'><o:p> </o:p></span></font></p>
<p class=MsoPlainText><font size=2 face="Courier New"><span lang=EN-IN
style='font-size:10.0pt'>Basic memory commands (mm. mw) work in any memory
region that the<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face="Courier New"><span lang=EN-IN
style='font-size:10.0pt'>hardware supports.<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face="Courier New"><span lang=EN-IN
style='font-size:10.0pt'><o:p> </o:p></span></font></p>
<p class=MsoPlainText><font size=2 face="Courier New"><span lang=EN-IN
style='font-size:10.0pt'>You will have to be mindful of certain memory and
interface devices<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face="Courier New"><span lang=EN-IN
style='font-size:10.0pt'>using only 16-bit or 8-bit access in a 32-bit
architecture. Otherwise,<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face="Courier New"><span lang=EN-IN
style='font-size:10.0pt'>such attempts to use 32-bit read/write will result in
the most<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face="Courier New"><span lang=EN-IN
style='font-size:10.0pt'>significant short-word or byte NOT to carry valid data
value.<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face="Courier New"><span lang=EN-IN
style='font-size:10.0pt'><o:p> </o:p></span></font></p>
<p class=MsoPlainText><font size=2 face="Courier New"><span lang=EN-IN
style='font-size:10.0pt'>TFTP does work writing directly into unprotected FLASH
region if the<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face="Courier New"><span lang=EN-IN
style='font-size:10.0pt'>CFG_DIRECT_FLASH_TFTP is defined in your include/configs/<board>.h
file.<o:p></o:p></span></font></p>
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