arm: init: export prev_bl_fdt_addr

When booting U-Boot on board with a locked down first-stage bootloader,
we emulate the Linux boot header. By passing the U-Boot FDT through this
first-stage bootloader and retrieving it afterwards we can pre-populate
the memory nodes and other info like the KASLR address.

Add a function to export the FDT addr so that boards can use it over the
built-in FDT.

Don't check is_addr_accessible() here because we might not yet have a
valid mem_map if it's going to be populated from the FDT, let the board
do their own validation instead.

Reviewed-by: Tom Rini <[email protected]>
Reviewed-by: Sumit Garg <[email protected]>
Tested-by: Sumit Garg <[email protected]> #qcs404
Signed-off-by: Caleb Connolly <[email protected]>

0 files changed, 0 insertions, 0 deletions