occheung/artiq
1
0
Fork 0
forked from M-Labs/artiq
Code Pull Requests Activity

soc/target: share base PPro design with MiSoC

Browse Source
This commit is contained in:
Sebastien Bourdeauducq 2014-08-03 12:26:15 +08:00
parent d918422457
commit 1ed808e848
1 changed files with 6 additions and 91 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

97
soc/targets/artiq.py
View File

@ -1,65 +1,11 @@
from fractions import Fraction
from migen.fhdl.std import *
from mibuild.generic_platform import *
from misoclib import lasmicon, spiflash, gpio
from misoclib.sdramphy import gensdrphy
from misoclib.gensoc import SDRAMSoC
from misoclib import gpio
from targets.ppro import BaseSoC
from artiqlib import rtio, ad9858
class _CRG(Module):
def __init__(self, platform, clk_freq):
self.clock_domains.cd_sys = ClockDomain()
self.clock_domains.cd_sys_ps = ClockDomain()
f0 = 32*1000*1000
clk32 = platform.request("clk32")
clk32a = Signal()
self.specials += Instance("IBUFG", i_I=clk32, o_O=clk32a)
clk32b = Signal()
self.specials += Instance("BUFIO2", p_DIVIDE=1,
p_DIVIDE_BYPASS="TRUE", p_I_INVERT="FALSE",
i_I=clk32a, o_DIVCLK=clk32b)
f = Fraction(int(clk_freq), int(f0))
n, m, p = f.denominator, f.numerator, 8
assert f0/n*m == clk_freq
pll_lckd = Signal()
pll_fb = Signal()
pll = Signal(6)
self.specials.pll = Instance("PLL_ADV", p_SIM_DEVICE="SPARTAN6",
p_BANDWIDTH="OPTIMIZED", p_COMPENSATION="INTERNAL",
p_REF_JITTER=.01, p_CLK_FEEDBACK="CLKFBOUT",
i_DADDR=0, i_DCLK=0, i_DEN=0, i_DI=0, i_DWE=0, i_RST=0, i_REL=0,
p_DIVCLK_DIVIDE=1, p_CLKFBOUT_MULT=m*p//n, p_CLKFBOUT_PHASE=0.,
i_CLKIN1=clk32b, i_CLKIN2=0, i_CLKINSEL=1,
p_CLKIN1_PERIOD=1/f0, p_CLKIN2_PERIOD=0.,
i_CLKFBIN=pll_fb, o_CLKFBOUT=pll_fb, o_LOCKED=pll_lckd,
o_CLKOUT0=pll[0], p_CLKOUT0_DUTY_CYCLE=.5,
o_CLKOUT1=pll[1], p_CLKOUT1_DUTY_CYCLE=.5,
o_CLKOUT2=pll[2], p_CLKOUT2_DUTY_CYCLE=.5,
o_CLKOUT3=pll[3], p_CLKOUT3_DUTY_CYCLE=.5,
o_CLKOUT4=pll[4], p_CLKOUT4_DUTY_CYCLE=.5,
o_CLKOUT5=pll[5], p_CLKOUT5_DUTY_CYCLE=.5,
p_CLKOUT0_PHASE=0., p_CLKOUT0_DIVIDE=p//1,
p_CLKOUT1_PHASE=0., p_CLKOUT1_DIVIDE=p//1,
p_CLKOUT2_PHASE=0., p_CLKOUT2_DIVIDE=p//1,
p_CLKOUT3_PHASE=0., p_CLKOUT3_DIVIDE=p//1,
p_CLKOUT4_PHASE=0., p_CLKOUT4_DIVIDE=p//1, # sys
p_CLKOUT5_PHASE=270., p_CLKOUT5_DIVIDE=p//1, # sys_ps
)
self.specials += Instance("BUFG", i_I=pll[4], o_O=self.cd_sys.clk)
self.specials += Instance("BUFG", i_I=pll[5], o_O=self.cd_sys_ps.clk)
self.specials += Instance("FD", p_INIT=1, i_D=~pll_lckd,
i_C=self.cd_sys.clk, o_Q=self.cd_sys.rst)
self.specials += Instance("ODDR2", p_DDR_ALIGNMENT="NONE",
p_INIT=0, p_SRTYPE="SYNC",
i_D0=0, i_D1=1, i_S=0, i_R=0, i_CE=1,
i_C0=self.cd_sys.clk, i_C1=~self.cd_sys.clk,
o_Q=platform.request("sdram_clock"))
_tester_io = [
("user_led", 1, Pins("B:7"), IOStandard("LVTTL")),
("ttl", 0, Pins("C:13"), IOStandard("LVTTL")),
@ -79,47 +25,16 @@ _tester_io = [
IOStandard("LVTTL")),
]
class ARTIQSoC(SDRAMSoC):
default_platform = "papilio_pro"
class ARTIQMiniSoC(BaseSoC):
csr_map = {
"rtio": 10
}
csr_map.update(SDRAMSoC.csr_map)
csr_map.update(BaseSoC.csr_map)
def __init__(self, platform, cpu_type="or1k", **kwargs):
clk_freq = 80*1000*1000
SDRAMSoC.__init__(self, platform, clk_freq,
cpu_reset_address=0x160000, cpu_type=cpu_type, **kwargs)
BaseSoC.__init__(self, platform, cpu_type=cpu_type, **kwargs)
platform.add_extension(_tester_io)
self.submodules.crg = _CRG(platform, clk_freq)
sdram_geom = lasmicon.GeomSettings(
bank_a=2,
row_a=12,
col_a=8
)
sdram_timing = lasmicon.TimingSettings(
tRP=self.ns(15),
tRCD=self.ns(15),
tWR=self.ns(14),
tWTR=2,
tREFI=self.ns(64*1000*1000/4096, False),
tRFC=self.ns(66),
req_queue_size=8,
read_time=32,
write_time=16
)
self.submodules.sdrphy = gensdrphy.GENSDRPHY(platform.request("sdram"))
self.register_sdram_phy(self.sdrphy.dfi, self.sdrphy.phy_settings, sdram_geom, sdram_timing)
# BIOS is in SPI flash
self.submodules.spiflash = spiflash.SpiFlash(platform.request("spiflash2x"),
cmd=0xefef, cmd_width=16, addr_width=24, dummy=4, div=4)
self.flash_boot_address = 0x70000
self.register_rom(self.spiflash.bus)
self.submodules.leds = gpio.GPIOOut(Cat(platform.request("user_led", 0),
platform.request("user_led", 1)))
@ -132,4 +47,4 @@ class ARTIQSoC(SDRAMSoC):
self.submodules.dds = ad9858.AD9858(platform.request("dds"))
self.add_wb_slave(lambda a: a[26:29] == 3, self.dds.bus)
default_subtarget = ARTIQSoC
default_subtarget = ARTIQMiniSoC