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Remove uses of pads, new constraints system

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This commit is contained in:
Sebastien Bourdeauducq 2012-04-02 19:22:17 +02:00
parent d2c4afe66c
commit 19b1cc2529
6 changed files with 81 additions and 83 deletions

129
constraints.py
View file

@ -1,64 +1,69 @@
def get(ns, crg0, norflash0, uart0, ddrphy0):
constraints = []
def add(signal, pin, vec=-1, iostandard="LVCMOS33", extra=""):
constraints.append((ns.get_name(signal), vec, pin, iostandard, extra))
def add_vec(signal, pins, iostandard="LVCMOS33", extra=""):
assert(signal.bv.width == len(pins))
i = 0
for p in pins:
add(signal, p, i, iostandard, extra)
i += 1
add(crg0.clkin, "AB11", extra="TNM_NET = \"GRPclk50\"")
add(crg0.ac97_rst_n, "D6")
add(crg0.videoin_rst_n, "W17")
add(crg0.flash_rst_n, "P22", extra="SLEW = FAST | DRIVE = 8")
add(crg0.trigger_reset, "AA4")
add_vec(norflash0.adr, ["L22", "L20", "K22", "K21", "J19", "H20", "F22",
"F21", "K17", "J17", "E22", "E20", "H18", "H19", "F20",
"G19", "C22", "C20", "D22", "D21", "F19", "F18", "D20", "D19"],
extra="SLEW = FAST | DRIVE = 8")
add_vec(norflash0.d, ["AA20", "U14", "U13", "AA6", "AB6", "W4", "Y4", "Y7",
"AA2", "AB2", "V15", "AA18", "AB18", "Y13", "AA12", "AB12"],
extra="SLEW = FAST | DRIVE = 8 | PULLDOWN")
add(norflash0.oe_n, "M22", extra="SLEW = FAST | DRIVE = 8")
add(norflash0.we_n, "N20", extra="SLEW = FAST | DRIVE = 8")
add(norflash0.ce_n, "M21", extra="SLEW = FAST | DRIVE = 8")
add(uart0.tx, "L17", extra="SLEW = SLOW")
add(uart0.rx, "K18", extra="PULLUP")
ddrsettings = "IOSTANDARD = SSTL2_I"
add(ddrphy0.sd_clk_out_p, "M3", extra=ddrsettings)
add(ddrphy0.sd_clk_out_n, "L4", extra=ddrsettings)
add_vec(ddrphy0.sd_a, ["B1", "B2", "H8", "J7", "E4", "D5", "K7", "F5",
"G6", "C1", "C3", "D1", "D2"], extra=ddrsettings)
add_vec(ddrphy0.sd_ba, ["A2", "E6"], extra=ddrsettings)
add(ddrphy0.sd_cs_n, "F7", extra=ddrsettings)
add(ddrphy0.sd_cke, "G7", extra=ddrsettings)
add(ddrphy0.sd_ras_n, "E5", extra=ddrsettings)
add(ddrphy0.sd_cas_n, "C4", extra=ddrsettings)
add(ddrphy0.sd_we_n, "D3", extra=ddrsettings)
add_vec(ddrphy0.sd_dq, ["Y2", "W3", "W1", "P8", "P7", "P6", "P5", "T4", "T3",
"U4", "V3", "N6", "N7", "M7", "M8", "R4", "P4", "M6", "L6", "P3", "N4",
"M5", "V2", "V1", "U3", "U1", "T2", "T1", "R3", "R1", "P2", "P1"],
extra=ddrsettings)
add_vec(ddrphy0.sd_dm, ["E1", "E3", "F3", "G4"], extra=ddrsettings)
add_vec(ddrphy0.sd_dqs, ["F1", "F2", "H5", "H6"], extra=ddrsettings)
r = ""
for c in constraints:
r += "NET \"" + c[0]
if c[1] >= 0:
r += "(" + str(c[1]) + ")"
r += "\" LOC = " + c[2]
r += " | IOSTANDARD = " + c[3]
if c[4]:
r += " | " + c[4]
r += ";\n"
r += """
class Constraints:
def __init__(self, crg0, norflash0, uart0, ddrphy0):
self.constraints = []
def add(signal, pin, vec=-1, iostandard="LVCMOS33", extra=""):
self.constraints.append((signal, vec, pin, iostandard, extra))
def add_vec(signal, pins, iostandard="LVCMOS33", extra=""):
assert(signal.bv.width == len(pins))
i = 0
for p in pins:
add(signal, p, i, iostandard, extra)
i += 1
add(crg0.clkin, "AB11", extra="TNM_NET = \"GRPclk50\"")
add(crg0.ac97_rst_n, "D6")
add(crg0.videoin_rst_n, "W17")
add(crg0.flash_rst_n, "P22", extra="SLEW = FAST | DRIVE = 8")
add(crg0.trigger_reset, "AA4")
add_vec(norflash0.adr, ["L22", "L20", "K22", "K21", "J19", "H20", "F22",
"F21", "K17", "J17", "E22", "E20", "H18", "H19", "F20",
"G19", "C22", "C20", "D22", "D21", "F19", "F18", "D20", "D19"],
extra="SLEW = FAST | DRIVE = 8")
add_vec(norflash0.d, ["AA20", "U14", "U13", "AA6", "AB6", "W4", "Y4", "Y7",
"AA2", "AB2", "V15", "AA18", "AB18", "Y13", "AA12", "AB12"],
extra="SLEW = FAST | DRIVE = 8 | PULLDOWN")
add(norflash0.oe_n, "M22", extra="SLEW = FAST | DRIVE = 8")
add(norflash0.we_n, "N20", extra="SLEW = FAST | DRIVE = 8")
add(norflash0.ce_n, "M21", extra="SLEW = FAST | DRIVE = 8")
add(uart0.tx, "L17", extra="SLEW = SLOW")
add(uart0.rx, "K18", extra="PULLUP")
ddrsettings = "IOSTANDARD = SSTL2_I"
add(ddrphy0.sd_clk_out_p, "M3", extra=ddrsettings)
add(ddrphy0.sd_clk_out_n, "L4", extra=ddrsettings)
add_vec(ddrphy0.sd_a, ["B1", "B2", "H8", "J7", "E4", "D5", "K7", "F5",
"G6", "C1", "C3", "D1", "D2"], extra=ddrsettings)
add_vec(ddrphy0.sd_ba, ["A2", "E6"], extra=ddrsettings)
add(ddrphy0.sd_cs_n, "F7", extra=ddrsettings)
add(ddrphy0.sd_cke, "G7", extra=ddrsettings)
add(ddrphy0.sd_ras_n, "E5", extra=ddrsettings)
add(ddrphy0.sd_cas_n, "C4", extra=ddrsettings)
add(ddrphy0.sd_we_n, "D3", extra=ddrsettings)
add_vec(ddrphy0.sd_dq, ["Y2", "W3", "W1", "P8", "P7", "P6", "P5", "T4", "T3",
"U4", "V3", "N6", "N7", "M7", "M8", "R4", "P4", "M6", "L6", "P3", "N4",
"M5", "V2", "V1", "U3", "U1", "T2", "T1", "R3", "R1", "P2", "P1"],
extra=ddrsettings)
add_vec(ddrphy0.sd_dm, ["E1", "E3", "F3", "G4"], extra=ddrsettings)
add_vec(ddrphy0.sd_dqs, ["F1", "F2", "H5", "H6"], extra=ddrsettings)
def get_ios(self):
return set([c[0] for c in self.constraints])
def get_ucf(self, ns):
r = ""
for c in self.constraints:
r += "NET \"" + ns.get_name(c[0])
if c[1] >= 0:
r += "(" + str(c[1]) + ")"
r += "\" LOC = " + c[2]
r += " | IOSTANDARD = " + c[3]
if c[4]:
r += " | " + c[4]
r += ";\n"
r += """
TIMESPEC "TSclk50" = PERIOD "GRPclk50" 20 ns HIGH 50%;
INST "m1crg/wr_bufpll" LOC = "BUFPLL_X0Y2";
INST "m1crg/rd_bufpll" LOC = "BUFPLL_X0Y3";
@ -66,4 +71,4 @@ INST "m1crg/rd_bufpll" LOC = "BUFPLL_X0Y3";
PIN "m1crg/bufg_x1.O" CLOCK_DEDICATED_ROUTE = FALSE;
"""
return r
return r

3
milkymist/m1crg/__init__.py
View file

@ -41,5 +41,4 @@ class M1CRG:
)
def get_fragment(self):
return Fragment(instances=[self._inst],
pads={self.clkin, self.ac97_rst_n, self.videoin_rst_n, self.flash_rst_n})
return Fragment(instances=[self._inst])

2
milkymist/norflash/__init__.py
View file

@ -28,4 +28,4 @@ class NorFlash:
(2*self.rd_timing + 1, [
self.bus.ack.eq(0)])
])
return Fragment(comb, sync, pads={self.adr, self.d, self.oe_n, self.we_n, self.ce_n})
return Fragment(comb, sync)

21
milkymist/s6ddrphy/__init__.py
View file

@ -7,19 +7,13 @@ class S6DDRPHY:
outs = []
inouts = []
for name in [
"clk2x_270",
"clk4x_wr",
"clk4x_wr_strb",
"clk4x_rd",
"clk4x_rd_strb"
]:
s = Signal(name=name)
setattr(self, name, s)
ins.append((name, s))
self._sd_pins = []
for name, width, l in [
("clk2x_270", 1, ins),
("clk4x_wr", 1, ins),
("clk4x_wr_strb", 1, ins),
("clk4x_rd", 1, ins),
("clk4x_rd_strb", 1, ins),
("sd_clk_out_p", 1, outs),
("sd_clk_out_n", 1, outs),
("sd_a", a, outs),
@ -37,7 +31,6 @@ class S6DDRPHY:
s = Signal(BV(width), name=name)
setattr(self, name, s)
l.append((name, s))
self._sd_pins.append(s)
self.dfi = dfi.Interface(a, ba, d, 2)
ins += self.dfi.get_standard_names(True, False)
@ -55,4 +48,4 @@ class S6DDRPHY:
clkport="sys_clk")
def get_fragment(self):
return Fragment(instances=[self._inst], pads=set(self._sd_pins))
return Fragment(instances=[self._inst])

2
milkymist/uart/__init__.py
View file

@ -107,4 +107,4 @@ class UART:
return self.bank.get_fragment() \
+ self.events.get_fragment() \
+ Fragment(comb, sync, pads={self.tx, self.rx})
+ Fragment(comb, sync)

7
top.py
View file

@ -6,7 +6,7 @@ from migen.fhdl import verilog, autofragment
from migen.bus import wishbone, wishbone2asmi, csr, wishbone2csr, dfi
from milkymist import m1crg, lm32, norflash, uart, sram, s6ddrphy, dfii, asmicon
import constraints
from constraints import Constraints
MHz = 1000000
clk_freq = (83 + Fraction(1, 3))*MHz
@ -122,11 +122,12 @@ def get():
crg0 = m1crg.M1CRG(50*MHz, clk_freq)
frag = autofragment.from_local() + interrupts + ddrphy_clocking(crg0, ddrphy0)
cst = Constraints(crg0, norflash0, uart0, ddrphy0)
src_verilog, vns = verilog.convert(frag,
{crg0.trigger_reset},
cst.get_ios(),
name="soc",
clk_signal=crg0.sys_clk,
rst_signal=crg0.sys_rst,
return_ns=True)
src_ucf = constraints.get(vns, crg0, norflash0, uart0, ddrphy0)
src_ucf = cst.get_ucf(vns)
return (src_verilog, src_ucf)