From 1ed808e848f7d64e3e5c0720cf409152073db0e4 Mon Sep 17 00:00:00 2001
From: Sebastien Bourdeauducq <sb@m-labs.hk>
Date: Sun, 3 Aug 2014 12:26:15 +0800
Subject: [PATCH] soc/target: share base PPro design with MiSoC

---
 soc/targets/artiq.py | 97 +++-----------------------------------------
 1 file changed, 6 insertions(+), 91 deletions(-)

diff --git a/soc/targets/artiq.py b/soc/targets/artiq.py
index e15d3cb7f..46cf2c6c0 100644
--- a/soc/targets/artiq.py
+++ b/soc/targets/artiq.py
@@ -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