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-rw-r--r--fpga/usrp3/top/x400/Makefile30
-rw-r--r--fpga/usrp3/top/x400/x4xx_core.v16
2 files changed, 24 insertions, 22 deletions
diff --git a/fpga/usrp3/top/x400/Makefile b/fpga/usrp3/top/x400/Makefile
index ad519be73..5098e58b1 100644
--- a/fpga/usrp3/top/x400/Makefile
+++ b/fpga/usrp3/top/x400/Makefile
@@ -43,22 +43,24 @@ QSFP1_100GBE = QSFP1_0=$(MGT_100GbE) QSFP1_1=$(MGT_Disabled) QSFP1_2=$(MGT_Disa
# Target specific variables
X410_IP: DEFS += $(QSFP0_10GBE) RFBW_100M=1
-X410_X1_100: DEFS += $(QSFP0_10GBE) RFBW_100M=1
-X410_XG_100: DEFS += $(QSFP0_10GBE) $(QSFP1_10GBE) RFBW_100M=1
-X410_X4_100: DEFS += $(QSFP0_4X10GBE) RFBW_100M=1
-X410_X4C_100: DEFS += $(QSFP0_4X10GBE) $(QSFP1_100GBE) RFBW_100M=1
-X410_CG_100: DEFS += $(QSFP0_100GBE) RFBW_100M=1
-X410_CG_200: DEFS += $(QSFP0_100GBE) RFBW_200M=1
-X410_XG_200: DEFS += $(QSFP0_10GBE) $(QSFP1_10GBE) RFBW_200M=1
-X410_X4_200: DEFS += $(QSFP0_4X10GBE) RFBW_200M=1
-X410_X4C_200: DEFS += $(QSFP0_4X10GBE) $(QSFP1_100GBE) RFBW_200M=1
-X410_C1_400: DEFS += $(QSFP0_100GBE) RFBW_400M=1
-X410_CG_400: DEFS += $(QSFP0_100GBE) $(QSFP1_100GBE) RFBW_400M=1
-
-# DRAM IP inclusion. Set to 1 to include DRAM IP in design, 0 to exclude it.
+X410_X1_100: DEFS += $(QSFP0_10GBE) RFBW_100M=1 DRAM_CH=4*$(DRAM) DRAM_W=64
+X410_XG_100: DEFS += $(QSFP0_10GBE) $(QSFP1_10GBE) RFBW_100M=1 DRAM_CH=4*$(DRAM) DRAM_W=64
+X410_X4_100: DEFS += $(QSFP0_4X10GBE) RFBW_100M=1 DRAM_CH=4*$(DRAM) DRAM_W=64
+X410_X4C_100: DEFS += $(QSFP0_4X10GBE) $(QSFP1_100GBE) RFBW_100M=1 DRAM_CH=0
+X410_CG_100: DEFS += $(QSFP0_100GBE) RFBW_100M=1 DRAM_CH=4*$(DRAM) DRAM_W=64
+X410_CG_200: DEFS += $(QSFP0_100GBE) RFBW_200M=1 DRAM_CH=4*$(DRAM) DRAM_W=64
+X410_X1_200: DEFS += $(QSFP0_10GBE) RFBW_200M=1 DRAM_CH=4*$(DRAM) DRAM_W=64
+X410_XG_200: DEFS += $(QSFP0_10GBE) $(QSFP1_10GBE) RFBW_200M=1 DRAM_CH=4*$(DRAM) DRAM_W=64
+X410_X4_200: DEFS += $(QSFP0_4X10GBE) RFBW_200M=1 DRAM_CH=4*$(DRAM) DRAM_W=64
+X410_X4C_200: DEFS += $(QSFP0_4X10GBE) $(QSFP1_100GBE) RFBW_200M=1 DRAM_CH=0
+X410_C1_400: DEFS += $(QSFP0_100GBE) RFBW_400M=1 DRAM_CH=0
+X410_CG_400: DEFS += $(QSFP0_100GBE) $(QSFP1_100GBE) RFBW_400M=1 DRAM_CH=0
+
+# DRAM IP inclusion. Set to 1 to include DRAM memory controller in design, 0 to
+# exclude it. Note that some targets exclude it regardless of this setting.
DRAM ?= 1
-DEFS += $(OPTIONS) ENABLE_DRAM=$(DRAM)
+DEFS += $(OPTIONS)
# Defaults specific to the various targets:
X410_100_DEFAULTS:=DEFAULT_RFNOC_IMAGE_CORE_FILE=x410_100_rfnoc_image_core.v DEFAULT_EDGE_FILE=$(abspath x410_100_static_router.hex)
diff --git a/fpga/usrp3/top/x400/x4xx_core.v b/fpga/usrp3/top/x400/x4xx_core.v
index df60b8a90..eac0b8f0a 100644
--- a/fpga/usrp3/top/x400/x4xx_core.v
+++ b/fpga/usrp3/top/x400/x4xx_core.v
@@ -394,16 +394,16 @@ module x4xx_core #(
// DRAM
//---------------------------------------------------------------------------
- `ifndef ENABLE_DRAM
- `define ENABLE_DRAM 0
+ `ifndef DRAM_CH
+ `define DRAM_CH 0
+ `endif
+ `ifndef DRAM_W
+ `define DRAM_W 64
`endif
- // Only the 100 and 200 MHz images currently support DRAM due to FPGA
- // resource limitations. For 200 MHz and below, a 64-bit interface provides
- // sufficient bandwidth.
- localparam ENABLE_DRAM = (`ENABLE_DRAM) && (RF_BANDWIDTH <= 200);
- localparam DRAM_NUM_PORTS = 4;
- localparam DRAM_AXI_DWIDTH = (RF_BANDWIDTH <= 200) ? 64 : 128;
+ localparam DRAM_AXI_DWIDTH = `DRAM_W;
+ localparam ENABLE_DRAM = (`DRAM_CH > 0);
+ localparam DRAM_NUM_PORTS = `DRAM_CH;
wire dram0_ui_clk;
wire dram0_ui_clk_sync_rst;