Add fdt_kaslrseed function to add kaslr-seed to chosen node

If RANDOMIZE_BASE is enabled in the Linux kernel instructing it to
randomize the virtual address at which the kernel image is loaded, it
expects entropy to be provided by the bootloader by populating
/chosen/kaslr-seed with a 64-bit value from source of entropy at boot.

Add a fdt_kaslrseed function to accommodate this allowing an existing
node to be overwritten if present. For now use the first rng device
but it would be good to enhance this in the future to allow some sort
of selection or policy in choosing the rng device used.

Signed-off-by: Tim Harvey <[email protected]>
Reviewed-by: Simon Glass <[email protected]>
Cc: Michal Simek <[email protected]>
Cc: Andy Yan <[email protected]>
Cc: Akash Gajjar <[email protected]>
Cc: Ilias Apalodimas <[email protected]>
Cc: Simon Glass <[email protected]>
Cc: Patrick Delaunay <[email protected]>
Cc: Patrice Chotard <[email protected]>
Cc: Devarsh Thakkar <[email protected]>
Cc: Heinrich Schuchardt <[email protected]>
Cc: Hugo Villeneuve <[email protected]>
Cc: Marek Vasut <[email protected]>
Cc: Tom Rini <[email protected]>
Cc: Chris Morgan <[email protected]>
Reviewed-by: Caleb Connolly <[email protected]>

0 files changed, 0 insertions, 0 deletions