• Yann Gautier's avatar
    stm32mp1: dynamically map DDR later and non-cacheable during its test · 84686ba3
    Yann Gautier authored
    
    
    A speculative accesses to DDR could be done whereas it was not reachable
    and could lead to bus stall.
    To correct this the dynamic mapping in MMU is used.
    A first mapping is done for DDR tests with MT_NON_CACHEABLE attribute,
    once DDR access is setup. It is then unmapped and a new mapping DDR is done
    with cacheable attribute (through MT_MEMORY) to speed-up BL33 (or OP-TEE)
    load.
    
    The disabling of cache during DDR tests is also removed, as now useless.
    A call to new functions stm32mp_{,un}map_ddr_non_cacheable() is done
    instead.
    
    PLAT_XLAT_TABLES_DYNAMIC is activated globally as used in BL2 and BL32.
    
    BL33 max size is also updated to take into account the secure and shared
    memory areas. Those are used in OP-TEE case.
    
    Change-Id: I22c48b4a48255ee264991c34ecbb15bfe87e67c3
    Signed-off-by: default avatarYann Gautier <yann.gautier@st.com>
    84686ba3
bl2_plat_setup.c 9.35 KB