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Author	SHA1	Message	Date
Dennis	8ea1ad97da	Fix AMBA AHB 3 Lite widget so that first register transactions succeed	2021-09-25 13:01:23 -07:00
Dennis	28edf17a1c	Pull assignment of multiplexer wires into generate for-loop	2021-09-19 23:24:59 -07:00
Dennis	887164dd52	Flip r_vld and w_vld in <REG>_sw_wr/<REG>_sw_rd assignment	2021-09-15 23:47:36 -07:00
Dennis	fea0019aa8	Replace old 'reg_clk' name by more generic 'clk' ... The reason is that the template will always assume that the bus signals and the registers are synchronous. Designers should implement possible synchronization logic outside of this block.	2021-09-15 23:42:52 -07:00
Dennis	61cd1fbfe3	Add directory that will contain SystemRDL files for tests	2021-09-13 22:09:04 -07:00
Dennis	85aa2f903c	Flops must not update when HREADYOUT == 0, not when r2b.rdy == 0	2021-09-13 21:52:35 -07:00
Dennis	a27b57009b	Fix two issues to get AMBA widget compile clean under Verilator ... The former issue was a Lint warning. HADDR % HSIZE is a modulo operation of a 32-bit and 3-bit variable. It is cleaner to only use the LSB of HADDR. Furthermore, Verilator does not support unpacked arrays in packages.	2021-09-12 19:44:42 -07:00
Dennis	240fba8e12	Resolve bug for addrmaps without any genvars ... In this case, there would be a line with `genvars ;`. This is not compilable by SystemVerilog compilers.	2021-09-12 19:44:42 -07:00
Dennis	17f1877390	Add very basic, incomplete statemachine for AHB protocol	2021-09-12 17:13:44 -07:00
Dennis	6142a13653	Add genvar-key to write-signals of external registers	2021-09-12 17:09:33 -07:00
Dennis	b89bf3663f	Fix issue with read-mux assignment for multidimensional registers	2021-09-12 16:44:37 -07:00
Dennis	5475bbf62d	Fix issue that causes 'input None' if no reset is present for a field	2021-09-06 22:42:32 -07:00
Dennis	24d5534037	Add support for external registers ... Every single field and every single alias (!) has its own interface to the surrounding hardware. This is required to give users the maximum amount of freedom when defining certain properties in RDL.	2021-09-06 18:48:37 -07:00
Dennis	a3b6e1caf8	Add file-exist check for input file	2021-09-06 11:58:01 -07:00
Dennis	4f2ac8868a	Rename regs.yaml to register.yaml for consistency reasons	2021-09-06 00:29:29 -07:00
Dennis	c689190080	Add proper support for rdy & error indication in read multiplexer ... The error indication is generated if: - A non-existent register gets read - An existent register gets read but not a single bit can be succesfully read or written. As soon as 1 bit succeeds don't return an error.	2021-09-06 00:26:08 -07:00
Dennis	2f38d30d76	Fix assignment to _rd_mux_in for arrays	2021-08-22 21:50:58 -07:00
Dennis	08b7de9544	Fix read-multiplexer bug in case a reg is _not_ an array	2021-08-22 21:43:53 -07:00
Dennis	d298e79ec1	Fix bug where an empty search path caused srdl2sv to crash	2021-08-22 21:27:44 -07:00
Dennis	8881821252	Give more consistent names to modules and packages	2021-08-22 20:46:35 -07:00
Dennis	5e4a954a0c	Add _very incomplete_ AMBA 3 AHB Lite widget ... This is just a start on the first widget. It is still very limited and not yet functional in any way.	2021-08-22 20:38:56 -07:00
Dennis	145ac70123	Add email address to MIT license	2021-08-15 14:12:21 -07:00
Dennis	78742daba7	Add support for 'next' property to fields	2021-08-15 14:10:22 -07:00
Dennis	a74377bae7	Add underflow property and checker if referenced properties exist	2021-08-15 12:56:41 -07:00
Dennis	1d5bc8b75e	Fix assignment of overflow to increment input of counter	2021-08-15 12:28:07 -07:00
Dennis	fd75e4c84c	Update systemrdl-compiler to v1.19.0 ... The main difference in this release (https://github.com/SystemRDL/systemrdl-compiler/releases/tag/v1.19.0) is that FieldNode.get_property('resetsignal') will now default to finding the nearest in-scope field reset signal if not explicitly set. The same is true for the cpuif-signal. Before this commit, the addmap-class searched for resetsignal and cpuif signals and saved it for the fields to be picked up later. This code is now not required anymore	2021-08-15 11:46:40 -07:00
Dennis	1d50b2b457	Add incrthreshold/decrthreshold support ... It is still not possible to assign overflow/threshold signals to any input of a different register!	2021-06-29 00:14:51 +02:00
Dennis	18204d9a3e	Improve counter property ... The counter now covers more corner cases regarding saturation. Furthermore, a bug that caused incr & decr-counters to always inadvertently increment and decrement, even if only one of the two signals was set. Furthermore, the overflow signal is now generated in RTL. Still missing: - incrthreshold/decrthreshold is not yet supported - It is not yet supported to assign an underflow/overflow to the input of another counter.	2021-06-28 23:58:45 +02:00
Dennis	4144329f3f	Add comment to delineate between counters and multiplexer assignment	2021-06-28 23:57:32 +02:00
Dennis	a0dd59d19a	Add hwenable and hwmask property	2021-06-28 12:48:17 +02:00
Dennis	c00550a166	Add hwset & hwclr properties	2021-06-28 00:37:54 +02:00
Dennis	9385f59ac7	Add counters (w/o threshold property and w/o an overflow property) ... Saturating and non-saturating counters are supported. Furthermore, dynamic and static incrvalues and the incrwidth property is supported.	2021-06-27 17:04:48 +02:00
Dennis	f50d65d2d2	Fix path in logger object ... For addrmaps, the addrmaps appeared twice. It was better anyway to use a variable name that gets build in create_underscored_path(). This method was not yet present when the logger was first instantiated.	2021-06-27 11:09:10 +02:00
Dennis	5ed7cccd7f	Cleanup __add_swmod_swacc and extend verbosity of warnings/debug	2021-06-27 00:21:41 +02:00
Dennis	2e22d82146	Add swmod and swacc properties and fix field-range bug	2021-06-27 00:09:28 +02:00
Dennis	95fef548cf	Add header with license and generation information to addrmap	2021-06-26 11:37:56 +02:00
Dennis	6deb772196	Add LICENSEs to srdl2sv ... The software itself is licensed under the copy-left GPL-3.0 license. All RTL (i.e., templates and widgets) are licensed under the MIT license. Therefore, the generated RTL will not be subject to the GPL-3.0 but to the MIT license.	2021-06-26 11:08:13 +02:00
Dennis	baf08d2343	Add bus_clk/bus_rst_n ports to widget (rather than (only) reg_clk)	2021-06-25 11:50:06 +02:00
Dennis	6565c33445	Resolve Python Lint warnings (e.g., unnecessary list comprehensions)	2021-06-25 11:46:18 +02:00
Dennis	c7f571b909	Fix missing multiplexer entries for single-dimension registers	2021-06-25 11:45:47 +02:00
Dennis	695de2d330	Add <<INDENT>> and <<UNINDENT>> helpers to template ... This allows a designer to add markers to the template to indicate where a new level of indentation should start or end. This is apart fromt he auto-indents caused by "case", "begin", or "{".	2021-06-25 11:33:57 +02:00
Dennis	01a696c2b3	Add default value to mux to prevent an inferred latch	2021-06-25 01:35:55 +02:00
Dennis	ce4782c11d	Pull declaration of variables outside of generate scope ... This ensures that code is compilation clean again. Prior to this change, the multiplexer was reading from variables that were declared inside of generate-scopes. Furthermore, a small bug regarding the dimension detection of registers was fixed. If a register wasn't multidimensional itself, but its parent is, the multidimensionalness wasn't detected.	2021-06-25 01:20:32 +02:00
Dennis	3089edc20d	Add indentation to case-block	2021-06-24 01:05:55 +02:00
Dennis	31179eeecc	Add get_package_rtl()-method to regfiles	2021-06-24 01:00:36 +02:00
Dennis	0db14e8815	Add missing sw_rd_bus-input port to widget	2021-06-24 00:58:42 +02:00
Dennis	32c6fc3c4a	Add read-multiplexer logic ... Evaluating every single wire is maybe not the best way to do this, but it is probably better than writing a very exotic SV construct with (for-)loops, breaks, and a lot of conditions. Most synthesis tools are pretty good at recognizing this case-construct and generating a good mutliplexer.	2021-06-23 01:03:11 +02:00
Dennis	b2c756af41	Add support for alias registers ... This required some fundamental changes. One of them is that YAML fields are now processed in a more systematic way in which all fields are passed via a dictionary. That way, some of the fields are not bound to the original object anymore.	2021-06-12 01:28:29 +02:00
Dennis	9deb28ce4e	Add initial version of widget-code and fix remaining SV compiler errors ... This adds initial support for a dynamic bus-protocol to internal register logic SHIM. The chosen default protocol at this point is AMBA 3 AHB Lite and the logic is still empty. -> TODO: Adding the widget instantiation showed that it is required to have a better interface to parametrize ports & signals in the YAML. At this point, only a limited set of variables are supported. Furthermore, all remaining Verilator compilation issues in the field are resolved. Those were mostly related to non-declared wires and wrongly named wires.	2021-06-05 15:37:09 +02:00
Dennis	21abdefac0	Add genvar declaration to addrmap	2021-06-03 18:07:17 +02:00