def ipgen_render(template_name: str, topname: str, params: Dict,
out_path: Path):
""" Render an IP template for a specific toplevel using ipgen.
The generated IP block is placed in the 'ip_autogen' directory of the
toplevel.
Aborts the program execution in case of an error.
"""
instance_name = f'top_{topname}_{template_name}'
ip_template = IpTemplate.from_template_path(
SRCTREE_TOP / 'hw/ip_templates' / template_name)
try:
ip_config = IpConfig(ip_template.params, instance_name, params)
except ValueError as e:
log.error(f"Unable to render IP template {template_name!r}: {str(e)}")
sys.exit(1)
try:
renderer = IpBlockRenderer(ip_template, ip_config)
renderer.render(out_path / 'ip_autogen' / template_name,
overwrite_output_dir=True)
except TemplateRenderError as e:
log.error(e.verbose_str())
sys.exit(1)
def test_render_simpleparam(rendertest_dirs) -> None:
""" Test the IpBlockRenderer when it gets passed simple parameters. """
(template_dir, out_dir) = rendertest_dirs
(template_dir / 'test.txt.tpl').write_text('param1=${param1}')
# Declare the template parameters.
params = TemplateParams()
params.add(BaseParam(name='param1', desc=None, param_type='string'))
ip_template = IpTemplate('rendertest', params, template_dir)
param_values = {
'param1': 'somevalue',
}
ip_config = IpConfig(ip_template.params, 'inst_rendertest', param_values)
# Render into the output directory.
renderer = IpBlockRenderer(ip_template, ip_config)
renderer.render(out_dir, overwrite_output_dir=False)
# Check that the template parameters are rendered correctly.
assert (out_dir / 'test.txt').is_file()
assert (out_dir / 'test.txt').read_text() == 'param1=somevalue'
def action_generate(ip_template: IpTemplate, args: argparse.Namespace) -> None:
""" Handle the 'generate' action/subcommand. """
overwrite_output_dir = args.force
output_path = args.outdir
# Read the IP configuration file.
config_fp = args.config_file
config_text = config_fp.read()
config_fp.close()
ip_config = IpConfig.from_text(config_text, "the file passed to --config")
# Render the IP template into an IP block.
renderer = IpBlockRenderer(ip_template, ip_config)
renderer.render(output_path, overwrite_output_dir)
print(f"Wrote IP block {ip_config.instance_name!r} "
f"from template {ip_template.name!r} to '{output_path}'.")
def test_render_objectparam(rendertest_dirs) -> None:
""" Test the IpBlockRenderer when it gets passed object parameters. """
(template_dir, out_dir) = rendertest_dirs
template = """${obj['super']}
${obj['mega']}
% for item in obj['list']:
${item}
% endfor
"""
(template_dir / 'test.txt.tpl').write_text(template)
# Declare the template parameters.
params = TemplateParams()
params.add(BaseParam(name='obj', desc=None, param_type='object'))
ip_template = IpTemplate('rendertest', params, template_dir)
param_values = {
'obj': {
'super': 'duper',
'mega': 1e6,
'list': ['of', 'things'],
},
}
ip_config = IpConfig(ip_template.params, 'inst_rendertest', param_values)
# Render into the output directory.
renderer = IpBlockRenderer(ip_template, ip_config)
renderer.render(out_dir, overwrite_output_dir=False)
# Check that the template parameters are rendered correctly.
assert (out_dir / 'test.txt').is_file()
assert (out_dir / 'test.txt').read_text() == 'duper\n1000000\nof\nthings\n'
def _process_top(topcfg, args, cfg_path, out_path, pass_idx):
# Create generated list
# These modules are generated through topgen
templated_list = lib.get_templated_modules(topcfg)
log.info("Templated list is {}".format(templated_list))
ipgen_list = lib.get_ipgen_modules(topcfg)
log.info("Ip gen list is {}".format(ipgen_list))
generated_list = templated_list + ipgen_list
# These modules are NOT generated but belong to a specific top
# and therefore not part of "hw/ip"
top_only_dict = {
module['type']: lib.is_reggen_only(module)
for module in topcfg['module'] if lib.is_top_reggen(module)
}
log.info("Filtered dict is {}".format(top_only_dict))
topname = topcfg["name"]
# Sweep the IP directory and gather the config files
ip_dir = Path(__file__).parents[1] / 'hw/ip'
ips = search_ips(ip_dir)
# exclude filtered IPs (to use top_${topname} one) and
exclude_list = generated_list + list(top_only_dict.keys())
ips = [x for x in ips if not x.parents[1].name in exclude_list]
# Hack alert
# Generate clkmgr.hjson here so that it can be included below
# Unlike other generated hjsons, clkmgr thankfully does not require
# ip.hjson information. All the information is embedded within
# the top hjson file
topcfg['clocks'] = Clocks(topcfg['clocks'])
extract_clocks(topcfg)
generate_clkmgr(topcfg, cfg_path, out_path)
# It may require two passes to check if the module is needed.
# TODO: first run of topgen will fail due to the absent of rv_plic.
# It needs to run up to amend_interrupt in merge_top function
# then creates rv_plic.hjson then run xbar generation.
hjson_dir = Path(args.topcfg).parent
for ip in generated_list:
# For modules that are generated prior to gathering, we need to take it from
# the output path. For modules not generated before, it may exist in a
# pre-defined area already.
log.info("Appending {}".format(ip))
if ip in ipgen_list:
ip_relpath = 'ip_autogen'
desc_file_relpath = 'data'
else:
ip_relpath = 'ip'
desc_file_relpath = 'data/autogen'
if ip == 'clkmgr' or (pass_idx > 0):
ip_hjson = (Path(out_path) / ip_relpath / ip / desc_file_relpath /
f"{ip}.hjson")
else:
ip_hjson = (hjson_dir.parent / ip_relpath / ip /
desc_file_relpath / f"{ip}.hjson")
ips.append(ip_hjson)
for ip, reggen_only in top_only_dict.items():
log.info("Appending {}".format(ip))
if reggen_only and args.hjson_path:
ip_hjson = Path(args.hjson_path) / f"{ip}.hjson"
else:
ip_hjson = hjson_dir.parent / f"ip/{ip}/data/{ip}.hjson"
ips.append(ip_hjson)
# load Hjson and pass validate from reggen
try:
ip_objs = []
for ip_desc_file in ips:
ip_name = ip_desc_file.stem
# Skip if it is not in the module list
if ip_name not in [ip["type"] for ip in topcfg["module"]]:
log.info("Skip module %s as it isn't in the top module list" %
ip_name)
continue
# The auto-generated hjson might not yet exist. It will be created
# later, see generate_{ip_name}() calls below. For the initial
# validation, use the Hjson file with default values.
# TODO: All of this is a rather ugly hack that we need to get rid
# of as soon as we don't arbitrarily template IP description Hjson
# files any more.
if ip_name in generated_list and not ip_desc_file.is_file():
if ip_name in ipgen_list:
log.info(
"To-be-auto-generated Hjson %s does not yet exist. "
"Falling back to the default configuration of template "
"%s for initial validation." % (ip_desc_file, ip_name))
tpl_path = SRCTREE_TOP / 'hw/ip_templates' / ip_name
ip_template = IpTemplate.from_template_path(tpl_path)
ip_config = IpConfig(ip_template.params,
f'top_{topname}_{ip_name}')
try:
ip_desc = IpDescriptionOnlyRenderer(
ip_template, ip_config).render()
except TemplateRenderError as e:
log.error(e.verbose_str())
sys.exit(1)
s = 'default description of IP template {}'.format(ip_name)
ip_objs.append(IpBlock.from_text(ip_desc, [], s))
else:
# TODO: Remove this block as soon as all IP templates use
# ipgen.
template_hjson_file = ip_dir / "{}/data/{}.hjson".format(
ip_name, ip_name)
log.info(
"To-be-auto-generated Hjson %s does not yet exist. "
"Falling back to Hjson description file %s shipped "
"with the IP template for initial validation." %
(ip_desc_file, template_hjson_file))
ip_objs.append(
IpBlock.from_path(str(template_hjson_file), []))
else:
ip_objs.append(IpBlock.from_path(str(ip_desc_file), []))
except ValueError:
raise SystemExit(sys.exc_info()[1])
name_to_block = {} # type: Dict[str, IpBlock]
for block in ip_objs:
lblock = block.name.lower()
assert lblock not in name_to_block
name_to_block[lblock] = block
connect_clocks(topcfg, name_to_block)
# Read the crossbars under the top directory
xbar_objs = get_hjsonobj_xbars(hjson_dir)
log.info("Detected crossbars: %s" %
(", ".join([x["name"] for x in xbar_objs])))
# If specified, override the seed for random netlist constant computation.
if args.rnd_cnst_seed:
log.warning('Commandline override of rnd_cnst_seed with {}.'.format(
args.rnd_cnst_seed))
topcfg['rnd_cnst_seed'] = args.rnd_cnst_seed
# Otherwise, we either take it from the top_{topname}.hjson if present, or
# randomly generate a new seed if not.
else:
random.seed()
new_seed = random.getrandbits(64)
if topcfg.setdefault('rnd_cnst_seed', new_seed) == new_seed:
log.warning(
'No rnd_cnst_seed specified, setting to {}.'.format(new_seed))
topcfg, error = validate_top(topcfg, ip_objs, xbar_objs)
if error != 0:
raise SystemExit("Error occured while validating top.hjson")
completecfg = merge_top(topcfg, name_to_block, xbar_objs)
# Generate flash controller and flash memory
generate_flash(topcfg, out_path)
# Generate PLIC
if not args.no_plic and \
not args.alert_handler_only and \
not args.xbar_only:
generate_plic(completecfg, out_path)
if args.plic_only:
sys.exit()
# Create Alert Handler LPGs before
# generating the Alert Handler
create_alert_lpgs(topcfg, name_to_block)
# Generate Alert Handler
if not args.xbar_only:
generate_alert_handler(completecfg, out_path)
if args.alert_handler_only:
sys.exit()
# Generate Pinmux
generate_pinmux(completecfg, out_path)
# Generate Pwrmgr
generate_pwrmgr(completecfg, out_path)
# Generate rstmgr
generate_rstmgr(completecfg, out_path)
# Generate top only modules
# These modules are not templated, but are not in hw/ip
generate_top_only(top_only_dict, out_path, topname, args.hjson_path)
return completecfg, name_to_block