RE: Access denied
"Dobbin Allan" <[email protected]> Fri, 14 Nov 2008 08:00:55 -0700
| Newsgroups | gmane.comp.hardware.motorola.microcontrollers |
|---|---|
| Message-ID | <4147ED8B92A864498825C07E53594E4A03DA0F03@az33exm20.fsl.freescale.net> |
--mEg2gmUOAs3MEreJ3EIy1vSGhELqfEvOsJrm0Pp Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Reset configuration comes from block 0 shadow flash - if certain bits in th= e shadow reset config word is programmed to 0, BDM can be locked out. To g= et the part back, drive RSTCONF LOW to override the shadow config. The res= et config is now sampled from the data bus and chances are that is all you = will have to do. If you have certain DATA pins held low, you may have to p= ull those up. Its been a while since I worked on that part and I can't rem= ember exactly what the relevant bits are, but this is likely enough to get = you by. =20 Assuming BDM now works, erase the shadow and you should be able to use the = part again as normal. =20 - Allan ________________________________ From: [email protected] [mailto:[email protected]] On Behalf Of J= ean-Christophe MATHAE Sent: Friday, November 14, 2008 4:38 AM To: [email protected] Subject: [MPC500] Access denied Hello, While trying to use the General Market CMF Driver for MPC555, I think that = I have turned a MPC555 chip into a useless bit of silicon... Is this possible? Could a wrong shadow information in Flash make the chip u= nresponsive to the BDM? Best regards. Jean-Christophe MATHAE CIRTEM http://www.cirtem.com <http://www.cirtem.com>=20 b=E2timent Pointe Bleue 20, voie l'Occitane BP661 31319 LABEGE cedex France =20 [Non-text portions of this message have been removed] --mEg2gmUOAs3MEreJ3EIy1vSGhELqfEvOsJrm0Pp Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/htm= l4/strict.dtd"> <html> <head> </head> <body style=3D"background-color: #ffffff;"> <!--~-|**|PrettyHtmlStartT|**|-~--> <div id=3D"ygrp-mlmsg" style=3D"width:655px; position:relative;"> <div id=3D"ygrp-msg" style=3D"width: 470px; margin:0; padding:0 25px 0 0; f= loat:left; z-index:1;"> <!--~-|**|PrettyHtmlEndT|**|-~--> <div id=3D"ygrp-text"> <p>Reset configuration comes from block 0 shadow flash - if cer= tain bits in the shadow reset config word is programmed to 0, BDM can be lo= cked out. To get the part back, drive RSTCONF LOW to override the shadow c= onfig. The reset config is now sampled from the data bus and chances are t= hat is all you will have to do. If you have certain DATA pins held low, yo= u may have to pull those up. Its been a while since I worked on that part = and I can't remember exactly what the relevant bits are, but this is likely= enough to get you by.<br> <br> Assuming BDM now works, erase the shadow and you should be able to use the = part again as normal.<br> <br> - Allan<br> <br> ____________<wbr>_________<wbr>_________<wbr>__<br> <br> From: <a href=3D"mailto:MPC500%40yahoogroups.com">MPC500@yahoogroups.<wbr>c= om</a> [mailto:<a href=3D"mailto:MPC500%40yahoogroups.com">MPC500@yahoogrou= ps.<wbr>com</a>] On Behalf Of Jean-Christophe MATHAE<br> Sent: Friday, November 14, 2008 4:38 AM<br> To: <a href=3D"mailto:MPC500%40yahoogroups.com">MPC500@yahoogroups.<wbr>com= </a><br> Subject: [MPC500] Access denied<br> <br> Hello,<br> <br> While trying to use the General Market CMF Driver for MPC555, I think that = I have turned a MPC555 chip into a useless bit of silicon...<br> <br> Is this possible? Could a wrong shadow information in Flash make the chip u= nresponsive to the BDM?<br> <br> Best regards.<br> <br> Jean-Christophe MATHAE<br> <br> CIRTEM<br> <a href=3D"http://www.cirtem.com">http://www.cirtem.<wbr>com</a> <<a hre= f=3D"http://www.cirtem.com">http://www.cirtem.<wbr>com</a>> <br> <br> b=E2timent Pointe Bleue<br> 20, voie l'Occitane<br> BP661<br> 31319 LABEGE cedex<br> France<br> <br> [Non-text portions of this message have been removed]<br> <br> </p> </div>=20=20 <!--~-|**|PrettyHtmlStart|**|-~--> <span width=3D"1" style=3D"color: white;">__._,_.___</span> <!-- Start the section with Message In topic --> <div id=3D"ygrp-actbar"> <span class=3D"left"> <a href=3D"http://groups.yahoo.com/group/MPC500/message/3956;_ylc= =3DX3oDMTM0aHNpajdhBF9TAzk3MzU5NzE0BGdycElkAzYyNzYzODcEZ3Jwc3BJZAMxNzA2NTU0= MjA1BG1zZ0lkAzM5NTcEc2VjA2Z0cgRzbGsDdnRwYwRzdGltZQMxMjI2Njc0ODY3BHRwY0lkAzM= 5NTY-"> Messages in this topic </a> (<span class=3D"bld">2</sp= an>) </span> <a href=3D"http://groups.yahoo.com/group/MPC500/post;_ylc=3DX3oDMTJ= wbmhlMWNxBF9TAzk3MzU5NzE0BGdycElkAzYyNzYzODcEZ3Jwc3BJZAMxNzA2NTU0MjA1BG1zZ0= lkAzM5NTcEc2VjA2Z0cgRzbGsDcnBseQRzdGltZQMxMjI2Njc0ODY3?act=3Dreply&messageN= um=3D3957"> <span class=3D"bld"> Reply </span> (via web post) </a> |=20 <a href=3D"http://groups.yahoo.com/group/MPC500/post;_ylc=3DX3oDMTJ= lMDFhYmVuBF9TAzk3MzU5NzE0BGdycElkAzYyNzYzODcEZ3Jwc3BJZAMxNzA2NTU0MjA1BHNlYw= NmdHIEc2xrA250cGMEc3RpbWUDMTIyNjY3NDg2Nw--" class=3D"bld"> Start a new topic </a> </div>=20 <!------- Start Nav Bar ------> <!-- |**|begin egp html banner|**| --> <div id=3D"ygrp-vitnav"> <a href=3D"http://groups.yahoo.com/group/MPC500/messages;_y= lc=3DX3oDMTJlYTdtajNyBF9TAzk3MzU5NzE0BGdycElkAzYyNzYzODcEZ3Jwc3BJZAMxNzA2NT= U0MjA1BHNlYwNmdHIEc2xrA21zZ3MEc3RpbWUDMTIyNjY3NDg2Nw--">Messages</a>=20=20 =20=20=20=20=20=20=20=20 =20=20=20=20=20=20=20=20 | <a href=3D"http://groups.yahoo.com/group/MPC500/links;_ylc= =3DX3oDMTJma3VrNHJ1BF9TAzk3MzU5NzE0BGdycElkAzYyNzYzODcEZ3Jwc3BJZAMxNzA2NTU0= MjA1BHNlYwNmdHIEc2xrA2xpbmtzBHN0aW1lAzEyMjY2NzQ4Njc-">Links</a>=20=20 =20=20=20=20=20=20=20=20 =20=20=20=20=20=20=20=20 =20=20=20=20=20=20=20=20 =20=20=20=20=20=20=20=20 </div>=20=20 <!-- |**|end egp html banner|**| --> <div id=3D"ygrp-grft"> =20=20=20=20=20=20=20=20=20=20 </div> =20=20=20=20=20=20 <div id=3D"ygrp-mkp"> <div id=3D"hd">MARKETPLACE</div> <div id=3D"ads"> <div class=3D"ad"> <hr noshade=3D"noshade" size=3D"1"><a href=3D"http://us.ard.yah= oo.com/SIG=3D13rlf1f5t/M=3D493064.12016295.13271503.10835568/D=3Dgroups/S= =3D1706554205:MKP1/Y=3DYAHOO/EXP=3D1226682067/L=3D/B=3D1JQMCkLaX.I-/J=3D122= 6674867933906/A=3D5530388/R=3D0/SIG=3D11nuutlas/*http://explore.yahoo.com/g= roups/kraftmealsmadesimple/">From kitchen basics to easy recipes - join the= Group from Kraft Foods </a> </div> </div> </div> =20=20=20=20=20=20 <!-- yahoo logo --> <!-- |**|begin egp html banner|**| --> <div id=3D"ygrp-ft"> <a href=3D"http://groups.yahoo.com/;_ylc=3DX3oDMTJkdTR1ZmpoBF9TAzk3Mz= U5NzE0BGdycElkAzYyNzYzODcEZ3Jwc3BJZAMxNzA2NTU0MjA1BHNlYwNmdHIEc2xrA2dmcARzd= GltZQMxMjI2Njc0ODY3"> <img src=3D"http://us.i1.yimg.com/us.yimg.com/i/yg/img/logo/ma_grp_16= 0.gif" height=3D"15" width=3D"106" border=3D"0" alt=3D"Yahoo! 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