Since we move the ATF bl31 entry for 64bit CPUs to 0x40000, we need to limit the SPL size in 0x40000(start from 0) so that we don't need to do the relocate for ATF loading. Note that there will be separate BSS, STACK and MALLOC heap, so the size 0x40000(256KB) should be enough for SPL text.
Signed-off-by: Kever Yang kever.yang@rock-chips.com I tested this
series on top of v2019.10 with rockpro64-rk3399_defconfig. While it builds fine, it does not work properly: U-Boot TPL 2019.10-00005-g7a0826a4f7-dirty (Oct 21 2019 - 10:12:53) Trying to boot from BOOTROM Returning to boot ROM... U-Boot SPL 2019.10-00005-g7a0826a4f7-dirty (Oct 21 2019 - 10:12:53 +0200) Trying to boot from MMC1 U-Boot TPL 2019.10-00005-g7a0826a4f7-dirty (Oct 21 2019 - 10:12:53) [boot loop] Size of u-boot-spl-nodtb.bin is 387k, so it does not fit in 256K. (Overlap in data section?) Earlier I tried the same u-boot version without this series but with bl31 entry point patched to 0x80000. This loads fine. One question, just for me to understand: Why do we load u-boot SPL into limited space below bl31? Since we do not return to SPL from bl31, we should not need to place SPL in secure DRAM. What do I miss here? Thanks, Soeren