> To fit the DBD_EN fused part, we re-design the TRDC and XRDC assignment. > M33 will be the TRDC owner and needs to configure TRDC. A35 is the > XRDC owner, ATF will configure XRDC. > The handshake between U-boot and M33 image is used to sync TRDC and > XRDC configuration completion. Once the handshake is done, A35 and M33 > can access the allowed resources in others domain. > The handshake is needed when M33 is booted or DBD_EN fused, because both > cases will enable the TRDC. If handshake is timeout, the boot will hang. > We use SIM GPR0 to pass the info from SPL to u-boot, because before the > handshake, u-boot can't access SEC SIM and FSB. > Signed-off-by: Ye Li <[email protected]> > Reviewed-by: Jacky Bai <[email protected]> Applied to u-boot-imx, -next, thanks !
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