Please look at my comments below.
1.
According to section 52.18 (Release a Slot back to the Keystore) of
“i.MX_6_Linux_Reference_Manual.pdf” ” in documentation of L3.14.28 :
“Configuration of the Secure Memory Driver / Keystore API is dependent on the
following kernel configuration parameters:
CRYPTO_DEV_FSL_CAAM_SM
Turns on the secure memory driver in the kernel build.
CRYPTO_DEV_FSL_CAAM_SM_SLOTSIZE
Configures the size of a secure memory "slot".
…
CRYPTO_DEV_FSL_CAAM_SM_TEST
Enables operation of a captive test / example module”
You may try to disable CAAM SM TEST.
“i.MX 6 Series Software and Development Tool Resources”
< http://www.freescale.com/webapp/sps/site/prod_summary.jsp?code=IMX6_SW >
2.
From Table 20 (Known issues and workarounds for i.MX 6SoloX) of
“i.MX_Linux_Release_Notes.pdf :
“The system reboots after the CAAM RNG test is suspended and resumed.
There is hardware function conflict between the Mega/Fast mix off feature and CAAM.
To use CAAM after kernel bootup, the user should enable the CAAM wakeup function
to avoid Mega mix off in DSM.
Workaround:
echo enabled > /sys/bus/platform/devices/2100000.aips-bus/2100000.caam/2101000.jr0/
power/wakeup ”
Have a great day,
Yuri
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