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NuBusFPGA
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add ram in common

This commit is contained in:
Romain Dolbeau 2023-11-18 12:16:58 +01:00
parent 3f96879194
commit 4304ac33a5
1 changed files with 8 additions and 41 deletions
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49
nubus-to-ztex-gateware/nubus_to_fpga_soc.py
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@ -19,9 +19,6 @@ import nubus_to_fpga_export
import nubus_full_unified
import nubus_stat
from litedram.modules import MT41J128M16
from litedram.phy import s7ddrphy
from litedram.frontend.dma import *
from liteeth.phy.rmii import LiteEthPHYRMII
@ -229,45 +226,15 @@ class NuBusFPGA(MacPeriphSoC):
#print(fix_line)
platform.add_platform_command(fix_line)
MacPeriphSoC.add_rom(self, version = version, flash = flash, config_flash = config_flash)
#from wb_test import WA2D
#self.submodules.wa2d = WA2D(self.platform)
#self.bus.add_slave("WA2D", self.wa2d.bus, SoCRegion(origin=0x00C00000, size=0x00400000, cached=False))
MacPeriphSoC.mac_add_declrom(self, version = version, flash = flash, config_flash = config_flash)
MacPeriphSoC.mac_add_sdram(self, hwinit = False)
# notsimul to signify we're making a real bitstream
# notsimul == False only to produce a verilog implementation to simulate the bus side of things
notsimul = True
if (notsimul):
avail_sdram = 0
self.submodules.ddrphy = s7ddrphy.A7DDRPHY(platform.request("ddram"),
memtype = "DDR3",
nphases = 4,
sys_clk_freq = sys_clk_freq)
self.add_sdram("sdram",
phy = self.ddrphy,
module = MT41J128M16(sys_clk_freq, "1:4"),
l2_cache_size = 0,
)
avail_sdram = self.bus.regions["main_ram"].size
#from sdram_init import DDR3FBInit
#self.submodules.sdram_init = DDR3FBInit(sys_clk_freq=sys_clk_freq, bitslip=1, delay=25)
#self.bus.add_master(name="DDR3Init", master=self.sdram_init.bus)
else:
avail_sdram = 256 * 1024 * 1024
self.add_ram("ram", origin=0x8f800000, size=2**16, mode="rw")
if (not notsimul): # otherwise we have no CSRs and litex doesn't like that
self.submodules.leds = ClockDomainsRenamer("nubus")(LedChaser(
pads = platform.request_all("user_led"),
sys_clk_freq = 10e6))
self.add_csr("leds")
base_fb = self.wb_mem_map["main_ram"] + avail_sdram - 1048576 # placeholder
base_fb = self.wb_mem_map["main_ram"] + self.avail_sdram - 1048576 # placeholder
if (goblin):
if (avail_sdram >= self.goblin_fb_size):
avail_sdram = avail_sdram - self.goblin_fb_size
base_fb = self.wb_mem_map["main_ram"] + avail_sdram
if (self.avail_sdram >= self.goblin_fb_size):
self.avail_sdram = self.avail_sdram - self.goblin_fb_size
base_fb = self.wb_mem_map["main_ram"] + self.avail_sdram
self.wb_mem_map["video_framebuffer"] = base_fb
print(f"FrameBuffer base_fb @ {base_fb:x}")
else:
@ -385,7 +352,7 @@ class NuBusFPGA(MacPeriphSoC):
fromsbus_req_fifo=self.fromsbus_req_fifo,
dram_native_r=self.sdram.crossbar.get_port(mode="read", data_width=data_width_bits),
dram_native_w=self.sdram.crossbar.get_port(mode="write", data_width=data_width_bits),
mem_size=avail_sdram//1048576,
mem_size=self.avail_sdram//1048576,
burst_size=burst_size,
do_checksum = False,
clock_domain="nubus")