Errata ERR010449

[rohanmahy]

Yuri‌ , it would be very useful to know the implications of the two workarounds.

#1 BT_MMU_DISABLE

If I turn this on, does it disable the MMU cache only for the boot loader (u-boot), or does it stay off for the OS (Linux) and my application as well?

#2 HAB_ENG_SW

What is the boot time implication if I turn this on? Assume we are verifying the boot loader image with a RSA 4096-bit public key and "fast authentication" (the SRK signs the image).

Thanks,

-r

[Yuri]

Hello,

  Please look at my comments below.

1.

    The fuse can disable the MMU / cache only for the boot ROM: boot ROM 

will not configure the MMU. OS bootloaders (U-boot) and OS itself can
configure the MMU as needed.

2.

  Software HAB implementation affects checking performance. We do not have

estimations for such case.

Have a great day,
Yuri

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