topic Re: IMX7 M4 cache in i.MX Processors https://community.nxp.com/t5/i-MX-Processors/IMX7-M4-cache/m-p/789913#M122427 <HTML><HEAD></HEAD><BODY><P class=""><SPAN class="">Hello,</SPAN></P><P class=""><SPAN class="">&nbsp;</SPAN></P><P class=""><SPAN class="">&nbsp; yes, the CM7 cache is working.</SPAN></P><P style="margin: 0px; padding: 0px; border: 0px; font-weight: 400; font-style: normal; font-size: 15px; font-family: arial, helvetica, 'helvetica neue', verdana, sans-serif; vertical-align: baseline; color: #51626f; font-variant-ligatures: normal; font-variant-caps: normal; letter-spacing: normal; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration-style: initial; text-decoration-color: initial;">From the team:</P><P style="margin: 0px; padding: 0px; border: 0px; font-weight: 400; font-style: normal; font-size: 15px; font-family: arial, helvetica, 'helvetica neue', verdana, sans-serif; vertical-align: baseline; color: #51626f; font-variant-ligatures: normal; font-variant-caps: normal; letter-spacing: normal; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration-style: initial; text-decoration-color: initial;">The cache is working in later revisions. Also, there are no CM4 cache specific issues in the errata.</P><P style="margin: 0px; padding: 0px; border: 0px; font-weight: 400; font-style: normal; font-size: 15px; font-family: arial, helvetica, 'helvetica neue', verdana, sans-serif; vertical-align: baseline; color: #51626f; font-variant-ligatures: normal; font-variant-caps: normal; letter-spacing: normal; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration-style: initial; text-decoration-color: initial; min-height: 8pt;">&nbsp;</P><P style="margin: 0px; padding: 0px; border: 0px; font-weight: 400; font-style: normal; font-size: 15px; font-family: arial, helvetica, 'helvetica neue', verdana, sans-serif; vertical-align: baseline; color: #51626f; font-variant-ligatures: normal; font-variant-caps: normal; letter-spacing: normal; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration-style: initial; text-decoration-color: initial;">Some issues that are on the community that are related to the CM4 cache:</P><P style="margin: 0px; padding: 0px; border: 0px; font-weight: 400; font-style: normal; font-size: 15px; font-family: arial, helvetica, 'helvetica neue', verdana, sans-serif; vertical-align: baseline; color: #51626f; font-variant-ligatures: normal; font-variant-caps: normal; letter-spacing: normal; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration-style: initial; text-decoration-color: initial; min-height: 8pt;">&nbsp;</P><P style="margin: 0px; padding: 0px; border: 0px; font-weight: 400; font-style: normal; font-size: 15px; font-family: arial, helvetica, 'helvetica neue', verdana, sans-serif; vertical-align: baseline; color: #51626f; font-variant-ligatures: normal; font-variant-caps: normal; letter-spacing: normal; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration-style: initial; text-decoration-color: initial;"><A href="https://community.nxp.com/thread/474015">Unable to use breakpoints on iMX7D when firmware placed in OCRAM...</A>&nbsp;<SPAN>&nbsp;</SPAN>, but this one has a workaround.</P><P style="margin: 0px; padding: 0px; border: 0px; font-weight: 400; font-style: normal; font-size: 15px; font-family: arial, helvetica, 'helvetica neue', verdana, sans-serif; vertical-align: baseline; color: #51626f; font-variant-ligatures: normal; font-variant-caps: normal; letter-spacing: normal; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration-style: initial; text-decoration-color: initial;">&nbsp;</P><P style="margin: 0px; padding: 0px; border: 0px; font-weight: 400; font-style: normal; font-size: 15px; font-family: arial, helvetica, 'helvetica neue', verdana, sans-serif; vertical-align: baseline; color: #51626f; font-variant-ligatures: normal; font-variant-caps: normal; letter-spacing: normal; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration-style: initial; text-decoration-color: initial;"><A href="https://community.nxp.com/thread/460621">Re: i.MX7D: atomic compare and swap instructions don't work with cache</A>&nbsp;, but this issue is not be treated</P><P style="margin: 0px; padding: 0px; border: 0px; font-weight: 400; font-style: normal; font-size: 15px; font-family: arial, helvetica, 'helvetica neue', verdana, sans-serif; vertical-align: baseline; color: #51626f; font-variant-ligatures: normal; font-variant-caps: normal; letter-spacing: normal; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration-style: initial; text-decoration-color: initial;">as a silicon bug and the document<SPAN>&nbsp;<A href="https://community.nxp.com/docs/DOC-340245">https://community.nxp.com/docs/DOC-340245</A>&nbsp; </SPAN></P><P style="margin: 0px; padding: 0px; border: 0px; font-weight: 400; font-style: normal; font-size: 15px; font-family: arial, helvetica, 'helvetica neue', verdana, sans-serif; vertical-align: baseline; color: #51626f; font-variant-ligatures: normal; font-variant-caps: normal; letter-spacing: normal; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration-style: initial; text-decoration-color: initial;">describes how to work around it.</P><P class=""><SPAN class="">&nbsp;</SPAN></P><P class=""><SPAN class="">Have a great day,</SPAN></P><P class=""><SPAN class="">Yuri</SPAN></P><P class=""><SPAN class="">&nbsp;</SPAN></P><P class=""><SPAN class="">------------------------------------------------------------------------------</SPAN></P><P class=""><SPAN class="">Note: If this post answers your question, please click the Correct Answer </SPAN></P><P class=""><SPAN class="">button. Thank you!</SPAN></P></BODY></HTML> Wed, 26 Sep 2018 10:16:57 GMT Yuri 2018-09-26T10:16:57Z IMX7 M4 cache https://community.nxp.com/t5/i-MX-Processors/IMX7-M4-cache/m-p/789912#M122426 <HTML><HEAD></HEAD><BODY><P>Hey <A class="jx-jive-macro-user" href="https://community.nxp.com/people/YuriMuhin_ng">YuriMuhin_ng</A>‌</P><P></P><BLOCKQUOTE class="jive_macro_quote jive-quote jive_text_macro"><P>Yuri Muhin wrote:</P><P class="" style="min-height: 8pt; padding: 0px;"><SPAN class=""></SPAN>&nbsp;</P><P class=""><SPAN class="">&nbsp; The CACHE for the CM4 is not functioning on the rev 1.0 silicon.</SPAN></P><P class=""><SPAN class="">&nbsp;Also, please refer to RTOS sources how to work with LMEM.</SPAN></P></BLOCKQUOTE><P class=""></P><P class="">Was this fixed for rev&nbsp; &gt;= 1.2 ?&nbsp;</P><P class=""></P><P class="">Thanks in advance&nbsp;</P></BODY></HTML> Sat, 22 Sep 2018 08:09:49 GMT https://community.nxp.com/t5/i-MX-Processors/IMX7-M4-cache/m-p/789912#M122426 dry 2018-09-22T08:09:49Z Re: IMX7 M4 cache https://community.nxp.com/t5/i-MX-Processors/IMX7-M4-cache/m-p/789913#M122427 <HTML><HEAD></HEAD><BODY><P class=""><SPAN class="">Hello,</SPAN></P><P class=""><SPAN class="">&nbsp;</SPAN></P><P class=""><SPAN class="">&nbsp; yes, the CM7 cache is working.</SPAN></P><P style="margin: 0px; padding: 0px; border: 0px; font-weight: 400; font-style: normal; font-size: 15px; font-family: arial, helvetica, 'helvetica neue', verdana, sans-serif; vertical-align: baseline; color: #51626f; font-variant-ligatures: normal; font-variant-caps: normal; letter-spacing: normal; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration-style: initial; text-decoration-color: initial;">From the team:</P><P style="margin: 0px; padding: 0px; border: 0px; font-weight: 400; font-style: normal; font-size: 15px; font-family: arial, helvetica, 'helvetica neue', verdana, sans-serif; vertical-align: baseline; color: #51626f; font-variant-ligatures: normal; font-variant-caps: normal; letter-spacing: normal; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration-style: initial; text-decoration-color: initial;">The cache is working in later revisions. Also, there are no CM4 cache specific issues in the errata.</P><P style="margin: 0px; padding: 0px; border: 0px; font-weight: 400; font-style: normal; font-size: 15px; font-family: arial, helvetica, 'helvetica neue', verdana, sans-serif; vertical-align: baseline; color: #51626f; font-variant-ligatures: normal; font-variant-caps: normal; letter-spacing: normal; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration-style: initial; text-decoration-color: initial; min-height: 8pt;">&nbsp;</P><P style="margin: 0px; padding: 0px; border: 0px; font-weight: 400; font-style: normal; font-size: 15px; font-family: arial, helvetica, 'helvetica neue', verdana, sans-serif; vertical-align: baseline; color: #51626f; font-variant-ligatures: normal; font-variant-caps: normal; letter-spacing: normal; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration-style: initial; text-decoration-color: initial;">Some issues that are on the community that are related to the CM4 cache:</P><P style="margin: 0px; padding: 0px; border: 0px; font-weight: 400; font-style: normal; font-size: 15px; font-family: arial, helvetica, 'helvetica neue', verdana, sans-serif; vertical-align: baseline; color: #51626f; font-variant-ligatures: normal; font-variant-caps: normal; letter-spacing: normal; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration-style: initial; text-decoration-color: initial; min-height: 8pt;">&nbsp;</P><P style="margin: 0px; padding: 0px; border: 0px; font-weight: 400; font-style: normal; font-size: 15px; font-family: arial, helvetica, 'helvetica neue', verdana, sans-serif; vertical-align: baseline; color: #51626f; font-variant-ligatures: normal; font-variant-caps: normal; letter-spacing: normal; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration-style: initial; text-decoration-color: initial;"><A href="https://community.nxp.com/thread/474015">Unable to use breakpoints on iMX7D when firmware placed in OCRAM...</A>&nbsp;<SPAN>&nbsp;</SPAN>, but this one has a workaround.</P><P style="margin: 0px; padding: 0px; border: 0px; font-weight: 400; font-style: normal; font-size: 15px; font-family: arial, helvetica, 'helvetica neue', verdana, sans-serif; vertical-align: baseline; color: #51626f; font-variant-ligatures: normal; font-variant-caps: normal; letter-spacing: normal; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration-style: initial; text-decoration-color: initial;">&nbsp;</P><P style="margin: 0px; padding: 0px; border: 0px; font-weight: 400; font-style: normal; font-size: 15px; font-family: arial, helvetica, 'helvetica neue', verdana, sans-serif; vertical-align: baseline; color: #51626f; font-variant-ligatures: normal; font-variant-caps: normal; letter-spacing: normal; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration-style: initial; text-decoration-color: initial;"><A href="https://community.nxp.com/thread/460621">Re: i.MX7D: atomic compare and swap instructions don't work with cache</A>&nbsp;, but this issue is not be treated</P><P style="margin: 0px; padding: 0px; border: 0px; font-weight: 400; font-style: normal; font-size: 15px; font-family: arial, helvetica, 'helvetica neue', verdana, sans-serif; vertical-align: baseline; color: #51626f; font-variant-ligatures: normal; font-variant-caps: normal; letter-spacing: normal; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration-style: initial; text-decoration-color: initial;">as a silicon bug and the document<SPAN>&nbsp;<A href="https://community.nxp.com/docs/DOC-340245">https://community.nxp.com/docs/DOC-340245</A>&nbsp; </SPAN></P><P style="margin: 0px; padding: 0px; border: 0px; font-weight: 400; font-style: normal; font-size: 15px; font-family: arial, helvetica, 'helvetica neue', verdana, sans-serif; vertical-align: baseline; color: #51626f; font-variant-ligatures: normal; font-variant-caps: normal; letter-spacing: normal; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration-style: initial; text-decoration-color: initial;">describes how to work around it.</P><P class=""><SPAN class="">&nbsp;</SPAN></P><P class=""><SPAN class="">Have a great day,</SPAN></P><P class=""><SPAN class="">Yuri</SPAN></P><P class=""><SPAN class="">&nbsp;</SPAN></P><P class=""><SPAN class="">------------------------------------------------------------------------------</SPAN></P><P class=""><SPAN class="">Note: If this post answers your question, please click the Correct Answer </SPAN></P><P class=""><SPAN class="">button. Thank you!</SPAN></P></BODY></HTML> Wed, 26 Sep 2018 10:16:57 GMT https://community.nxp.com/t5/i-MX-Processors/IMX7-M4-cache/m-p/789913#M122427 Yuri 2018-09-26T10:16:57Z Re: IMX7 M4 cache https://community.nxp.com/t5/i-MX-Processors/IMX7-M4-cache/m-p/789914#M122428 <HTML><HEAD></HEAD><BODY><P>Yuri,</P><P></P><P>The&nbsp;<SPAN style="color: #51626f; background-color: #ffffff;">document</SPAN><SPAN style="color: #51626f; border: 0px;">&nbsp;<A _jive_internal="true" class="" data-containerid="1007" data-containertype="700" data-objectid="340245" data-objecttype="102" href="https://community.nxp.com/docs/DOC-340245" style="color: #3d9ce7; background-color: transparent; border: 0px; font-weight: inherit; padding: 1px 0px 1px calc(12px + 0.35ex);">Arm Cortex-M4™ Exclusive Access Support for i.MX Processors</A>&nbsp;doesn't seem to exist or is inaccessible. Could you fix the link?</SPAN></P></BODY></HTML> Sat, 10 Nov 2018 20:55:24 GMT https://community.nxp.com/t5/i-MX-Processors/IMX7-M4-cache/m-p/789914#M122428 dogisfat 2018-11-10T20:55:24Z