[pinmux] Topgen updates for updated pinmux
Signed-off-by: Michael Schaffner <msf@opentitan.org>
diff --git a/util/topgen.py b/util/topgen.py
index 3b67a14..b86ee90 100755
--- a/util/topgen.py
+++ b/util/topgen.py
@@ -294,23 +294,80 @@
def generate_pinmux(top, out_path):
topname = top["name"]
# MIO Pads
- num_mio = top["pinmux"]["num_mio"]
- if num_mio <= 0:
- log.warning(
- "No PINMUX is generated. The top %s has no multiplexed IO ports." %
- top["name"])
+ n_mio_pads = top["pinmux"]["num_mio"]
+ if n_mio_pads <= 0:
+ # TODO: add support for no MIO case
+ log.error(
+ "Topgen does currently not support generation of a top " +
+ "without a pinmux.")
+ return
+
+ # Get number of wakeup detectors
+ if "num_wkup_detect" in top["pinmux"]:
+ num_wkup_detect = top["pinmux"]["num_wkup_detect"]
+ else:
+ num_wkup_detect = 1
+
+ if num_wkup_detect <= 0:
+ # TODO: add support for no wakeup counter case
+ log.error(
+ "Topgen does currently not support generation of a top " +
+ "without DIOs.")
+ return
+
+ if "wkup_cnt_width" in top["pinmux"]:
+ wkup_cnt_width = top["pinmux"]["wkup_cnt_width"]
+ else:
+ wkup_cnt_width = 8
+
+ if wkup_cnt_width <= 1:
+ log.error("Wakeup counter width must be greater equal 2.")
return
# Total inputs/outputs
- num_inputs = sum(
- [x["width"] if "width" in x else 1 for x in top["pinmux"]["inputs"]])
- num_outputs = sum(
- [x["width"] if "width" in x else 1 for x in top["pinmux"]["outputs"]])
- num_inouts = sum(
- [x["width"] if "width" in x else 1 for x in top["pinmux"]["inouts"]])
+ # Validation ensures that the width field is present.
+ num_mio_inputs = sum(
+ [x["width"] for x in top["pinmux"]["inputs"]])
+ num_mio_outputs = sum(
+ [x["width"] for x in top["pinmux"]["outputs"]])
+ num_mio_inouts = sum(
+ [x["width"] for x in top["pinmux"]["inouts"]])
- n_periph_in = num_inouts + num_inputs
- n_periph_out = num_inouts + num_outputs
+ num_dio_inputs = sum(
+ [x["width"] if x["type"] == "input" else 0 for x in top["pinmux"]["dio"]])
+ num_dio_outputs = sum(
+ [x["width"] if x["type"] == "output" else 0 for x in top["pinmux"]["dio"]])
+ num_dio_inouts = sum(
+ [x["width"] if x["type"] == "inout" else 0 for x in top["pinmux"]["dio"]])
+
+ n_mio_periph_in = num_mio_inouts + num_mio_inputs
+ n_mio_periph_out = num_mio_inouts + num_mio_outputs
+ n_dio_periph_in = num_dio_inouts + num_dio_inputs
+ n_dio_periph_out = num_dio_inouts + num_dio_outputs
+ n_dio_pads = num_dio_inouts + num_dio_inputs + num_dio_outputs
+
+ if n_dio_pads <= 0:
+ # TODO: add support for no DIO case
+ log.error(
+ "Topgen does currently not support generation of a top " +
+ "without DIOs.")
+ return
+
+ log.info("Generating pinmux with following info from hjson:")
+ log.info("num_mio_inputs: %d" % num_mio_inputs)
+ log.info("num_mio_outputs: %d" % num_mio_outputs)
+ log.info("num_mio_inouts: %d" % num_mio_inouts)
+ log.info("num_dio_inputs: %d" % num_dio_inputs)
+ log.info("num_dio_outputs: %d" % num_dio_outputs)
+ log.info("num_dio_inouts: %d" % num_dio_inouts)
+ log.info("num_wkup_detect: %d" % num_wkup_detect)
+ log.info("wkup_cnt_width: %d" % wkup_cnt_width)
+ log.info("This translates to:")
+ log.info("n_mio_periph_in: %d" % n_mio_periph_in)
+ log.info("n_mio_periph_out: %d" % n_mio_periph_out)
+ log.info("n_dio_periph_in: %d" % n_dio_periph_in)
+ log.info("n_dio_periph_out: %d" % n_dio_periph_out)
+ log.info("n_dio_pads: %d" % n_dio_pads)
# Target path
# rtl: pinmux_reg_pkg.sv & pinmux_reg_top.sv
@@ -333,9 +390,22 @@
with tpl_path.open(mode='r', encoding='UTF-8') as fin:
hjson_tpl = Template(fin.read())
try:
- out = hjson_tpl.render(n_periph_in=n_periph_in,
- n_periph_out=n_periph_out,
- n_mio_pads=num_mio)
+ # TODO: pass in information about always-on peripherals
+ # TODO: pass in information on which DIOs can be selected
+ # as wakeup signals
+ # TODO: pass in signal names such that we can introduce
+ # named enums for select signals
+ out = hjson_tpl.render(n_mio_periph_in=n_mio_periph_in,
+ n_mio_periph_out=n_mio_periph_out,
+ n_mio_pads=n_mio_pads,
+ # each DIO has in, out and oe wires
+ # some of these have to be tied off in the
+ # top, depending on the type.
+ n_dio_periph_in=n_dio_pads,
+ n_dio_periph_out=n_dio_pads,
+ n_dio_pads=n_dio_pads,
+ n_wkup_detect=num_wkup_detect,
+ wkup_cnt_width=wkup_cnt_width)
except: # noqa: E722
log.error(exceptions.text_error_template().render())
log.info("PINMUX HJSON: %s" % out)
