From 0649ded5fdefaa299d9c3e9ee0333a474bd70dbc Mon Sep 17 00:00:00 2001 From: Florent Kermarrec Date: Sat, 28 Mar 2015 23:10:33 +0100 Subject: [PATCH] soc: simplify main_ram_size computation and share it between LASMIcon and Minicon --- misoclib/soc/sdram.py | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/misoclib/soc/sdram.py b/misoclib/soc/sdram.py index d18a6799..4a8dd901 100644 --- a/misoclib/soc/sdram.py +++ b/misoclib/soc/sdram.py @@ -36,6 +36,12 @@ class SDRAMSoC(SoC): # Core self.submodules.sdram = SDRAMCore(phy, phy.module.geom_settings, phy.module.timing_settings, self.sdram_controller_settings) + dfi_databits_divisor = 1 if phy.settings.memtype == "SDR" else 2 + sdram_width = phy.settings.dfi_databits//dfi_databits_divisor + main_ram_size = 2**(phy.module.geom_settings.bankbits+ + phy.module.geom_settings.rowbits+ + phy.module.geom_settings.colbits)*sdram_width//8 + # LASMICON frontend if isinstance(self.sdram_controller_settings, LASMIconSettings): if self.sdram_controller_settings.with_bandwidth: @@ -57,16 +63,10 @@ class SDRAMSoC(SoC): else: self.submodules.wishbone2lasmi = wishbone2lasmi.WB2LASMI(l2_size//4, self.sdram.crossbar.get_master()) lasmic = self.sdram.controller.lasmic - main_ram_size = 2**lasmic.aw*lasmic.dw*lasmic.nbanks//8 self.register_mem("main_ram", self.mem_map["main_ram"], self.wishbone2lasmi.wishbone, main_ram_size) # MINICON frontend elif isinstance(self.sdram_controller_settings, MiniconSettings): - sdram_width = flen(self.sdram.controller.bus.dat_r) - main_ram_size = 2**(phy.module.geom_settings.bankbits+ - phy.module.geom_settings.rowbits+ - phy.module.geom_settings.colbits)*sdram_width//8 - if sdram_width == 32: self.register_mem("main_ram", self.mem_map["main_ram"], self.sdram.controller.bus, main_ram_size) elif sdram_width < 32: -- 2.30.2