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f6fa5ae2f9
Add logic that checks if the CPU is reading an instruction
to execute from ROM or not. If instructions are read
from ROM, access to the SPI from the API is granted, and
signals between the SPI master and a slave are allowed.
If instructions are not read from ROM, any API access
is blocked. and between the SPI master and a
slave are disabled.
Signed-off-by: Joachim Strömbergson <joachim@assured.se>