2 commits

Author	SHA1	Message	Date
Heinrich Schuchardt	1351cd3b4b	rng: detect RISC-V Zkr RNG device in bind method ... The existence of devices should be checked in the bind method and not in the probe method. Adjust the RISC-V Zkr RNG driver accordingly. Use ENOENT (and not ENODEV) to signal that the device is not available. Fixes: ceec977ba1 ("rng: Provide a RNG based on the RISC-V Zkr ISA extension") Reported-by: Andre Przywara <andre.przywara@arm.com> Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>	2024-01-09 07:37:05 +01:00
Heinrich Schuchardt	ceec977ba1	rng: Provide a RNG based on the RISC-V Zkr ISA extension ... The Zkr ISA extension (ratified Nov 2021) introduced the seed CSR. It provides an interface to a physical entropy source. A RNG driver based on the seed CSR is provided. It depends on mseccfg.sseed being set in the SBI firmware. Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com> Reviewed-by: Leo Yu-Chi Liang <ycliang@andestech.com>	2023-11-02 16:22:06 +08:00