On 10/15/24 12:15 AM, Alex Shumsky wrote:
Increase rng-seed size to make Linux happy and initialize rng pool instantly. Linux 5.19+ requires 32 bytes of entropy to initialize random pool, but u-boot currently provides only 8 bytes. Linux 5.18 and probably some versions before it used to require 64 bytes. Bump min value to 64 bytes to be on a safe side.Boot with 8 byte rng-seed (Linux 6.11): # dmesg | grep crng [ 12.089286] random: crng init done Boot with 32 byte rng-seed (Linux 6.11): # dmesg | grep crng [ 0.000000] random: crng init done Linux source references: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/char/random.c?h=v5.19#n551 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/char/random.c?h=v5.18#n236 Signed-off-by: Alex Shumsky <[email protected]> Fixes: d2048bafae40 ("rockchip: board: Add board_rng_seed() for all Rockchip devices") Reviewed-by: Dragan Simic <[email protected]>
Reviewed-by: Marek Vasut <[email protected]> Thanks
