imx8mplus boot flow

[srinivas_123]

I am using i.MX8M  Plus lpddr4 evk board and have built the "IMXLXYOCTOUG v.LF6.6.3_1.0.0" BSP using Yocto

I successfully flashed the image onto the SD card and tested it. But I want to know the boot flow of the image from the SD card. Is there any document available for boot flow? Please help me.

Thanks, Regards

Srinivas

[Manuel_Salas]

Hello @srinivas_123 

I hope you are doing well.

After power on or reset, i.MX 8M executes the Boot ROM (the primary program loader), stored in its read-only memory (ROM).

Boot ROM configures the system-on-chip (SoC) by performing basic peripheral initializations such as Phase Locked Loops (PLLs), clock configurations, memory initialization (SRAM). Then it finds a boot device from where it loads a bootloader image, which can include the following components: U-Boot SPL, ATF, U-Boot, and so on.

Information from AN14093.

Best regards,

Salas.