From: Stefano Manni <stefano.manni@xxxxxxxxx> Date: Tue, 23 Jul 2024 15:08:22 +0000 Subject: [PATCH] habv4: ignore engine failure due to RNG self-test in boot ROM Few i.MX chips which have HAB 4.2.3 or beyond, have oberserved following warning message generated by HAB due to incorrect implementation of RNG self-test in boot ROM: HABv4: Status: Operation completed with warning (0x69) HABv4: Config: Non-secure IC (0xf0) HABv4: State: Non-secure state (0x66) ERROR: HABv4: -------- HAB Event 0 -------- ERROR: HABv4: event data: ERROR: HABv4: db 00 24 42 69 30 e1 1d ERROR: HABv4: 00 08 00 02 40 00 36 06 ERROR: HABv4: 55 55 00 03 00 00 00 00 ERROR: HABv4: 00 00 00 00 00 00 00 00 ERROR: HABv4: 00 00 00 01 ERROR: HABv4: Status: Operation completed with warning (0x69) ERROR: HABv4: Reason: Engine failure (0x30) ERROR: HABv4: Context: Event logged in hab_rvt.entry() (0xe1) ERROR: HABv4: Engine: CAAM (0x1d) On these chips it is recommended to run the software self-test in order to discover any other failure in addition to the false positivie above. This patch filters out the event and not show it as suggested in [1]. [1] https://lore.barebox.org/barebox/ba1febb9b457f5876959f093f866b680e266f987.camel@xxxxxxxxxxxxxx/ Suggested-by: Rouven Czerwinski <r.czerwinski@xxxxxxxxxxxxxx> Signed-off-by: Stefano Manni <stefano.manni@xxxxxxxxx> --- drivers/hab/habv4.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/hab/habv4.c b/drivers/hab/habv4.c index c60a658b89..d3462eaeb7 100644 --- a/drivers/hab/habv4.c +++ b/drivers/hab/habv4.c @@ -553,6 +553,11 @@ static uint8_t habv4_known_rng_fail_events[][RNG_FAIL_EVENT_SIZE] = { 0x55, 0x55, 0x00, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }, + { 0xdb, 0x00, 0x24, 0x42, 0x69, 0x30, 0xe1, 0x1d, + 0x00, 0x08, 0x00, 0x02, 0x40, 0x00, 0x36, 0x06, + 0x55, 0x55, 0x00, 0x03, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x01 }, }; static bool is_known_rng_fail_event(const uint8_t *data, size_t len) -- 2.25.1
