luke
/
icestorm
mirror of https://github.com/YosysHQ/icestorm.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Fix make_ram40 for UltraPlus 

Sometimes make_ram40 was assigning too many IO pins, causing a placment
failure, and also sometimes connecting a global clock net to WCLKE or
RCLKE which was also causing a placment failure.
This commit is contained in:
David Shah 2017-10-20 16:27:06 +01:00
parent 42047c6114
commit 172d561b01
1 changed files with 7 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
icefuzz/make_ram40.py
View File

@ -14,6 +14,10 @@ os.mkdir(working_dir)
for idx in range(num): for idx in range(num):
with open(working_dir + "/ram40_%02d.v" % idx, "w") as f: with open(working_dir + "/ram40_%02d.v" % idx, "w") as f:
glbs = ["glb[%d]" % i for i in range(np.random.randint(8)+1)] glbs = ["glb[%d]" % i for i in range(np.random.randint(8)+1)]
# Connecting GLB to CE pins seemingly disallowed
if device_class == "5k":
glbs_choice = ["wa", "ra", "msk", "wd", "we", "wc", "re", "rc"]
else:
glbs_choice = ["wa", "ra", "msk", "wd", "we", "wce", "wc", "re", "rce", "rc"] glbs_choice = ["wa", "ra", "msk", "wd", "we", "wce", "wc", "re", "rce", "rc"]
print(""" print("""
module top ( module top (
@ -26,7 +30,7 @@ for idx in range(num):
.USER_SIGNAL_TO_GLOBAL_BUFFER(glb_pins), .USER_SIGNAL_TO_GLOBAL_BUFFER(glb_pins),
.GLOBAL_BUFFER_OUTPUT(glb) .GLOBAL_BUFFER_OUTPUT(glb)
); );
""" % (len(glbs)-1, len(pins) - 16 - 1, len(glbs)-1, len(glbs)-1), file=f) """ % (len(glbs)-1, len(pins) - len(glbs) - 16 - 1, len(glbs)-1, len(glbs)-1), file=f)
bits = ["in_pins[%d]" % i for i in range(60)] bits = ["in_pins[%d]" % i for i in range(60)]
bits = list(np.random.permutation(bits)) bits = list(np.random.permutation(bits))
for i in range(num_ramb40): for i in range(num_ramb40):
@ -102,7 +106,7 @@ for idx in range(num):
print("endmodule", file=f) print("endmodule", file=f)
with open(working_dir + "/ram40_%02d.pcf" % idx, "w") as f: with open(working_dir + "/ram40_%02d.pcf" % idx, "w") as f:
p = list(np.random.permutation(pins)) p = list(np.random.permutation(pins))
for i in range(len(pins) - 16): for i in range(len(pins) - len(glbs) - 16):
print("set_io in_pins[%d] %s" % (i, p.pop()), file=f) print("set_io in_pins[%d] %s" % (i, p.pop()), file=f)
for i in range(16): for i in range(16):
print("set_io out_pins[%d] %s" % (i, p.pop()), file=f) print("set_io out_pins[%d] %s" % (i, p.pop()), file=f)