Before this fix, the bug would only pop up for addresses that were
dividable by 4. Otherwise, the AMBA AHB 3 Lite widget would return an
error response because of an illegal HSIZE/HADDR combination.
The software now detects whether a field shall be implemented with
flops, with wires, or as a constant. Everything should now follow Table
12 and Section 9.5.1 of the SystemRDL 2.0 LRM.
Every time an addrmap is detected within another addrmap, a new context
will be opened and a separate RTL file will be created.
All addrmaps will have the same bus-wdiget, but it might be possible
that different addrmaps have different maximum regwidths. For that
reason, it was necessary to change the non-generic srd2sv_if_pkg to a
parametrizable interface.
Almost all changes to the templates in this commit are due to name
changes from 'b2r' and 'r2b' to 'widget_if'.
The SystemRDL that was added comes from Section 17.2 "Understanding
hierarchical interrupts in SystemRDL" of the SystemRDL 2.0 LRM. The
present code succesfully compiles.
This happened in AddrMap and RegFile because a the width of a new
variable 'new_child' is performed. However, SignalNodes will not create
such a child.
If this option is defined, there will be a direct interface to the b2r
and r2b interface. The structs will be flattened out to wires for legacy
reasons.
This closes#3.
The register was defined as a 64-bit register but the test was written
under the assumption it's a 32-bit register. Furthermore, the hardware
write-enable flag had to be set since all values would otherwise be
overwritten immediately.
For example, most methods relating to dimensions or genvars were moved
to the Components class.
Furthermore, some more care was taken of _ or __ prefixes for methods:
- No method-prefix: Public variable that is will be called by
non-related functions and methods.
- _ method-prefix: Method will be called by class or class that
inerhits class
- __ method-prefix: Method will be called by class itself only
The following tests are now included:
- Check access to registers over AHB bus
- Check access to register over HW interface
- Check access to register over HW interface if hw_wr-input
is disabled.
- Check if the slave responds with a correct error sequence if
an illegal address is accessed.
Dennis Potter