soc: limit main_ram_size to 256MB (we should modify mem_map to allow larger memories...

diff --git a/misoclib/soc/sdram.py b/misoclib/soc/sdram.py
index 4a8dd901be79767be415da53c74b114efb428991..72f82f78e5b8c2be956afdf24f1a0cbb44e7d97a 100644 (file)
--- a/misoclib/soc/sdram.py
+++ b/misoclib/soc/sdram.py
@@ -41,6 +41,8 @@ class SDRAMSoC(SoC):
                main_ram_size = 2**(phy.module.geom_settings.bankbits+
                                                        phy.module.geom_settings.rowbits+
                                                        phy.module.geom_settings.colbits)*sdram_width//8
+               # XXX: Limit main_ram_size to 256MB, we should modify mem_map to allow larger memories.
+               main_ram_size = min(main_ram_size, 256*1024*1024)
 
                # LASMICON frontend
                if isinstance(self.sdram_controller_settings, LASMIconSettings):