Where is TZDRAM?

Autonomous Machines Jetson & Embedded Systems Jetson TX2
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hello fanyangyf688,

  • TZRAM is on-chip RAM which act like a normal RAM by default; ATF doesn’t use TZRAM.

  • TZ-DRAM is majority for ARM trusted application (TA) code to access security data/code under DRAM.
    the start address of TZ-DRAM is configured in the makefile; there is an assumption that maximum allowed size for TZ-DRAM is 32MB.
    the size and alignment are configured by BCT, (i.e. tegra186-mb1-bct-misc-si.cfg), you may also check sw_carveout.tzdram_carveout_size for reference.
    thanks