topic imx6sl, tweaking boot scenario in Processor Expert Software https://community.nxp.com/t5/Processor-Expert-Software/imx6sl-tweaking-boot-scenario/m-p/715258#M4095 <HTML><HEAD></HEAD><BODY><P>Hello Community,</P><P></P><P>I'm developing product based on imx6sl SoC. I've got question how to correctly manage initial boot scenarios. I'm using u-boot image stored in SPI NOR flash. It performs normal boot. But sometimes I will want to&nbsp;return into SDP (Serial Downloader) mode for purpose upload manufacturing images and perform necessary software updates.</P><P></P><P>Final device will not contain mechanical switches for&nbsp;BOOT_MODE and will have fuses programmed for boot from SPI NOR flash. There will no possibility tweak board to switch it into SDP mode.</P><P></P><P>My question is there any possibility to fallback into SDP mode from the loaded&nbsp;u-boot image? Eg. by checking in u-boot some `magic` key combination emulate fail-state in u-boot and tell cpu return to SDP mode.</P><P></P><P>Probably you may advice some alternate solution to perform safe updates of working system?</P><P></P><P>Thank you very much!</P><P>Best regards,</P><P>Vasyl.</P></BODY></HTML> Sat, 28 Apr 2018 13:42:02 GMT vasylzakharko 2018-04-28T13:42:02Z imx6sl, tweaking boot scenario https://community.nxp.com/t5/Processor-Expert-Software/imx6sl-tweaking-boot-scenario/m-p/715258#M4095 <HTML><HEAD></HEAD><BODY><P>Hello Community,</P><P></P><P>I'm developing product based on imx6sl SoC. I've got question how to correctly manage initial boot scenarios. I'm using u-boot image stored in SPI NOR flash. It performs normal boot. But sometimes I will want to&nbsp;return into SDP (Serial Downloader) mode for purpose upload manufacturing images and perform necessary software updates.</P><P></P><P>Final device will not contain mechanical switches for&nbsp;BOOT_MODE and will have fuses programmed for boot from SPI NOR flash. There will no possibility tweak board to switch it into SDP mode.</P><P></P><P>My question is there any possibility to fallback into SDP mode from the loaded&nbsp;u-boot image? Eg. by checking in u-boot some `magic` key combination emulate fail-state in u-boot and tell cpu return to SDP mode.</P><P></P><P>Probably you may advice some alternate solution to perform safe updates of working system?</P><P></P><P>Thank you very much!</P><P>Best regards,</P><P>Vasyl.</P></BODY></HTML> Sat, 28 Apr 2018 13:42:02 GMT https://community.nxp.com/t5/Processor-Expert-Software/imx6sl-tweaking-boot-scenario/m-p/715258#M4095 vasylzakharko 2018-04-28T13:42:02Z