On Tue, Jul 27, 2021 at 05:06:59PM +0800, Zong Li wrote:
Add board_fdt_blob_setup to return the device tree location which is passed by prior stage in u-boot proper. The generic board_fdt_blob_setup always returns _end, it mignt be ok because u-boot SPL would currently put the dtb there, but it would be broken if we put the dtb to another place and assigned the location into a1 register for u-boot proper. Use the location passed by prior stage would make more sence, because we actually pass the location to u-boot proper and want to use that one, rather than the dtb which in _end.
We can't use CONFIG_OF_PRIOR_STAGE because it doens't distinguish the implementation of u-boot SPL and u-boot proper, so u-boot SPL need to reply on the prior stage to pass device tree location as well, but we don't pass the DT from boot rom now. In addition, when CONFIG_OF_PRIOR_STAGE is enabled, the u-boot-spl.bin and u-boot.itb won't include the device tree.
Signed-off-by: Zong Li zong.li@sifive.com
board/sifive/unleashed/unleashed.c | 11 +++++++++++ board/sifive/unmatched/unmatched.c | 11 +++++++++++ 2 files changed, 22 insertions(+)
Reviewed-by: Leo Yu-Chi Liang ycliang@andestech.com