P-SeriesのトピックRe: booting time for p2041/p4080 QorIQ based RDBs https://community.nxp.com/t5/P-Series/booting-time-for-p2041-p4080-QorIQ-based-RDBs/m-p/491680#M2979 <HTML><HEAD></HEAD><BODY><P><SPAN lang="EN-US" style="font-size: 10.0pt;">Yes, you are right. </SPAN></P><P><SPAN lang="EN-US" style="font-size: 10.0pt;">U-boot first operations are the following: initialize DRAM and relocate u-boot to DRAM.</SPAN></P><P><SPAN lang="EN-US" style="font-size: 10.0pt;">We did not measure this time. You can estimate this time look at u-boot DRAM initialization code.</SPAN></P><P><SPAN lang="EN-US" style="font-size: 10.0pt;">See the following documents:</SPAN></P><P><SPAN lang="EN-US" style="font-size: 10.0pt;"><A class="jive-link-external-small" href="https://community.freescale.com/external-link.jspa?url=http%3A%2F%2Fwww.denx.de%2Fen%2Fpub%2FDocuments%2FPresentations%2FEWC2012_Roeder_Zundel_Fastboot.pdf" rel="nofollow" target="_blank">http://www.denx.de/en/pub/Documents/Presentations/EWC2012_Roeder_Zundel_Fastboot.pdf</A></SPAN></P><P></P><P><SPAN lang="EN-US" style="font-size: 10.0pt;">Look at recommendations for u-boot in the following document:</SPAN></P><P><SPAN lang="EN-US" style="font-size: 10.0pt;"><A class="jive-link-external-small" href="https://community.freescale.com/external-link.jspa?url=http%3A%2F%2Ffree-electrons.com%2Fpub%2Fconferences%2F2014%2Felc%2Fopdenacker-boot-time%2Fopdenacker-boot-time.pdf" rel="nofollow" target="_blank">http://free-electrons.com/pub/conferences/2014/elc/opdenacker-boot-time/opdenacker-boot-time.pdf</A></SPAN></P><P></P><P><SPAN lang="EN-US" style="font-size: 10.0pt;">See also the following:</SPAN></P><P><SPAN lang="EN-US" style="font-size: 10.0pt;"><A class="jive-link-external-small" href="https://community.freescale.com/external-link.jspa?url=http%3A%2F%2Fxillybus.com%2Ftutorials%2Fuboot-hacking-howto-3" rel="nofollow" target="_blank">http://xillybus.com/tutorials/uboot-hacking-howto-3</A></SPAN></P><P><SPAN lang="EN-US" style="font-size: 10.0pt;"><A class="jive-link-external-small" href="https://community.freescale.com/external-link.jspa?url=http%3A%2F%2Fprocessors.wiki.ti.com%2Findex.php%2FOptimize_Linux_Boot_Time" rel="nofollow" target="_blank">http://processors.wiki.ti.com/index.php/Optimize_Linux_Boot_Time</A></SPAN></P><P></P><P><BR />Have a great day,<BR />Pavel Chubakov</P><P></P><P>-----------------------------------------------------------------------------------------------------------------------<BR />Note: If this post answers your question, please click the Correct Answer button. Thank you!<BR />-----------------------------------------------------------------------------------------------------------------------</P></BODY></HTML> Mon, 11 Apr 2016 03:41:21 GMT Pavel 2016-04-11T03:41:21Z booting time for p2041/p4080 QorIQ based RDBs https://community.nxp.com/t5/P-Series/booting-time-for-p2041-p4080-QorIQ-based-RDBs/m-p/491679#M2978 <HTML><HEAD></HEAD><BODY><P>Hi everybody,</P><P>What average booting time for p2041/p4080 QorIQ based RDBs before copying the image from flash to RAM ? I mean only board initialization without all u-boot goodies. </P></BODY></HTML> Sun, 10 Apr 2016 05:50:07 GMT https://community.nxp.com/t5/P-Series/booting-time-for-p2041-p4080-QorIQ-based-RDBs/m-p/491679#M2978 emintz 2016-04-10T05:50:07Z Re: booting time for p2041/p4080 QorIQ based RDBs https://community.nxp.com/t5/P-Series/booting-time-for-p2041-p4080-QorIQ-based-RDBs/m-p/491680#M2979 <HTML><HEAD></HEAD><BODY><P><SPAN lang="EN-US" style="font-size: 10.0pt;">Yes, you are right. </SPAN></P><P><SPAN lang="EN-US" style="font-size: 10.0pt;">U-boot first operations are the following: initialize DRAM and relocate u-boot to DRAM.</SPAN></P><P><SPAN lang="EN-US" style="font-size: 10.0pt;">We did not measure this time. You can estimate this time look at u-boot DRAM initialization code.</SPAN></P><P><SPAN lang="EN-US" style="font-size: 10.0pt;">See the following documents:</SPAN></P><P><SPAN lang="EN-US" style="font-size: 10.0pt;"><A class="jive-link-external-small" href="https://community.freescale.com/external-link.jspa?url=http%3A%2F%2Fwww.denx.de%2Fen%2Fpub%2FDocuments%2FPresentations%2FEWC2012_Roeder_Zundel_Fastboot.pdf" rel="nofollow" target="_blank">http://www.denx.de/en/pub/Documents/Presentations/EWC2012_Roeder_Zundel_Fastboot.pdf</A></SPAN></P><P></P><P><SPAN lang="EN-US" style="font-size: 10.0pt;">Look at recommendations for u-boot in the following document:</SPAN></P><P><SPAN lang="EN-US" style="font-size: 10.0pt;"><A class="jive-link-external-small" href="https://community.freescale.com/external-link.jspa?url=http%3A%2F%2Ffree-electrons.com%2Fpub%2Fconferences%2F2014%2Felc%2Fopdenacker-boot-time%2Fopdenacker-boot-time.pdf" rel="nofollow" target="_blank">http://free-electrons.com/pub/conferences/2014/elc/opdenacker-boot-time/opdenacker-boot-time.pdf</A></SPAN></P><P></P><P><SPAN lang="EN-US" style="font-size: 10.0pt;">See also the following:</SPAN></P><P><SPAN lang="EN-US" style="font-size: 10.0pt;"><A class="jive-link-external-small" href="https://community.freescale.com/external-link.jspa?url=http%3A%2F%2Fxillybus.com%2Ftutorials%2Fuboot-hacking-howto-3" rel="nofollow" target="_blank">http://xillybus.com/tutorials/uboot-hacking-howto-3</A></SPAN></P><P><SPAN lang="EN-US" style="font-size: 10.0pt;"><A class="jive-link-external-small" href="https://community.freescale.com/external-link.jspa?url=http%3A%2F%2Fprocessors.wiki.ti.com%2Findex.php%2FOptimize_Linux_Boot_Time" rel="nofollow" target="_blank">http://processors.wiki.ti.com/index.php/Optimize_Linux_Boot_Time</A></SPAN></P><P></P><P><BR />Have a great day,<BR />Pavel Chubakov</P><P></P><P>-----------------------------------------------------------------------------------------------------------------------<BR />Note: If this post answers your question, please click the Correct Answer button. Thank you!<BR />-----------------------------------------------------------------------------------------------------------------------</P></BODY></HTML> Mon, 11 Apr 2016 03:41:21 GMT https://community.nxp.com/t5/P-Series/booting-time-for-p2041-p4080-QorIQ-based-RDBs/m-p/491680#M2979 Pavel 2016-04-11T03:41:21Z