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Get CSR base addresses from include file
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Sebastien Bourdeauducq committed May 16, 2012
1 parent bb79817 commit 141269b3842c729a90c3ff8df60396486b1f1d67
Showing with 20 additions and 2 deletions.
  1. +10 −0 cmacros.py
  2. +10 −2 top.py
@@ -0,0 +1,10 @@
import re

def get_macros(filename):
f = open(filename, "r")
r = {}
for line in f:
match = re.match("\w*#define\s+(\w+)\s+(.*)", line, re.IGNORECASE)
if match:
r[match.group(1)] = match.group(2)
return r
12 top.py
@@ -6,6 +6,7 @@
from migen.bus import wishbone, wishbone2asmi, csr, wishbone2csr, dfi

from milkymist import m1crg, lm32, norflash, uart, sram, s6ddrphy, dfii, asmicon
from cmacros import get_macros
from constraints import Constraints

MHz = 1000000
@@ -56,6 +57,12 @@ def ddrphy_clocking(crg, phy):
comb = [getattr(phy, name).eq(getattr(crg, name)) for name in names]
return Fragment(comb)

csr_macros = get_macros("common/csrbase.h")
def csr_offset(name):
base = int(csr_macros[name + "_BASE"], 0)
assert((base >= 0xe0000000) and (base <= 0xe0010000))
return (base - 0xe0000000)//0x800

def get():
#
# ASMI
@@ -68,7 +75,8 @@ def get():
# DFI
#
ddrphy0 = s6ddrphy.S6DDRPHY(sdram_geom.mux_a, sdram_geom.bank_a, sdram_phy.dfi_d)
dfii0 = dfii.DFIInjector(1, sdram_geom.mux_a, sdram_geom.bank_a, sdram_phy.dfi_d, sdram_phy.nphases)
dfii0 = dfii.DFIInjector(csr_offset("DFII"),
sdram_geom.mux_a, sdram_geom.bank_a, sdram_phy.dfi_d, sdram_phy.nphases)
dficon0 = dfi.Interconnect(dfii0.master, ddrphy0.dfi)
dficon1 = dfi.Interconnect(asmicon0.dfi, dfii0.slave)

@@ -103,7 +111,7 @@ def get():
#
# CSR
#
uart0 = uart.UART(0, clk_freq, baud=115200)
uart0 = uart.UART(csr_offset("UART"), clk_freq, baud=115200)
csrcon0 = csr.Interconnect(wishbone2csr0.csr, [
uart0.bank.interface,
dfii0.bank.interface

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