I am using iMX8M mini.
I am following the CST code signing tool and the document https://www.nxp.com/docs/en/application-note/AN4581.pdf
These documents talks about signing u-boot.imx , but what about the SPL ? Does it need to be signed and with IVT and other info table ( imx format ) as well as u-boot does ?
Do instead the docs mean an all inclusive u-boot meaning u-boot+spl ?