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<?xml-stylesheet type="text/xsl" href="https://community.arm.com/utility/feedstylesheets/rss.xsl" media="screen"?><rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/"><channel><title>chenyinhua's Groups Activities</title><link>https://community.arm.com/members/chenyinhua</link><description>Recent activity for people in chenyinhua's group</description><dc:language>en-US</dc:language><generator>Telligent Community 10</generator><item><title>Ask A Question I</title><link>https://community.arm.com/achievements/460ac7df-7ccc-4c42-a204-9e05eef3be09</link><pubDate>Tue, 10 Nov 2020 00:17:45 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:fa861772-0b7f-475a-a0c5-39d5d7893b06</guid><dc:creator /><description>Ask a question in a forum.</description></item><item><title>Can secure states know that they are in secure state?</title><link>https://community.arm.com/developer/ip-products/system/f/soc-design-forum/48023/can-secure-states-know-that-they-are-in-secure-state</link><pubDate>Tue, 10 Nov 2020 12:49:27 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:b3d1b440-914c-4724-9b24-5cdd300c5c21</guid><dc:creator>chenyinhua</dc:creator><description>&lt;p&gt;I am developing OP-TEE in secure EL1. My architecture is AArch64, ARMv8&lt;/p&gt;
&lt;p&gt;However, I want to prove to others that my code is running in secure EL1, rather than non-secure EL1. Am I able to do that?&lt;/p&gt;
&lt;p&gt;------------------------------The folloing is the effort I made-----------------------------&lt;/p&gt;
&lt;p&gt;I know that NS bit in SCR_EL3 indicates whether EL1 and EL0 are running in secure state or not. However, secure EL1 is not allowed to access SCR_EL3.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item></channel></rss>