fix(plat/st): apply security at the end of BL2

Now that the DDR is mapped secured, the security settings (TZC400
firewall) have to be applied at the end of BL2 for the OP-TEE case.
This is required to avoid checskum computation error on U-Boot binary,
for which MMU and TZC400 would not be aligned.

Change-Id: I4a364f7117960e8fae1b579f341b9f140b766ea6
Signed-off-by: Yann Gautier <>
1 file changed