Hi Heiko, Thanks for your email.
On Mon, Jul 7, 2025 at 1:30 AM Heiko Schocher <[email protected]> wrote: > Have you checked if CONFIG_SYS_BOOTCOUNT_ADDR address is stable over > reset? May someone overwrites it... When I inspect via md.l, it is always zero. > I had it working on imx6ull > > CONFIG_BOOTCOUNT_BOOTLIMIT=3 > CONFIG_SYS_BOOTCOUNT_ADDR=0x20d8024 > CONFIG_SYS_BOOTCOUNT_SINGLEWORD=y > CONFIG_BOOTCOUNT_LIMIT=y I tried these changes, but they did not help. Do you happen to remember which U-Boot version you used? > I did not needed > > > +CONFIG_SYS_BOOTCOUNT_MAGIC=0xB0C4000 > > +CONFIG_SYS_BOOTCOUNT_BE=y > > but may because I have an older base... > > Hmm.. your register seems fine ... I read in RM: > """ > For backward compatibility with earlier > versions of SNVS LPGPR0 is aliased at its original offset of 68h.The GPR will > be > automatically zeroized when a tamper event occurs, unless GPR zeroization is > disabled > via the GPR_Z_DIS bit in the LP Control Register. > """ > > May try 0x20b00090 ... just a try... Also, tried, but it also stays at 0. > May tamper event occurs? And the register is in "low power domain" ... may > there is a problem... so no real idea here from my side, just speculation... It seems that I am missing something to get the LPGPR register to increment. Regards, Fabio Estevam
