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When booting in EFI, lib/efi_loader/efi_memory.c calls board_get_usable_ram_top(0) which returns by default gd->ram_base + gd->ram_size which is the top of DDR. In case of OPTEE boot, the top of DDR is currently reserved by OPTEE, board_get_usable_ram_top(0) must return an address outside OPTEE reserved memory. gd->ram_top matches this constraint as it has already been initialized by substracting all DT reserved-memory (included OPTEE memory area). Fixes: 92b611e8 ("stm32mp: correctly handle board_get_usable_ram_top(0)") Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com> Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
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