Updated the mprj_stimulus testbench so that it works with the
update to caravel (caravel_openframe).
diff --git a/verilog/dv/mprj_stimulus/Makefile b/verilog/dv/mprj_stimulus/Makefile
index 3a73b99..b0e4051 100644
--- a/verilog/dv/mprj_stimulus/Makefile
+++ b/verilog/dv/mprj_stimulus/Makefile
@@ -25,6 +25,11 @@
CARAVEL_RTL_PATH = $(CARAVEL_VERILOG_PATH)/rtl
CARAVEL_BEHAVIOURAL_MODELS = $(CARAVEL_VERILOG_PATH)/dv/caravel
+## Management SoC Pointers
+MGMT_SOC_PATH ?= ../../../../caravel_pico
+MGMT_SOC_VERILOG_PATH = $(MGMT_SOC_PATH)/verilog
+MGMT_SOC_RTL_PATH = $(MGMT_SOC_PATH)/verilog/rtl
+
## User Project Pointers
UPRJ_VERILOG_PATH ?= ../../../verilog
UPRJ_RTL_PATH = $(UPRJ_VERILOG_PATH)/rtl
@@ -50,12 +55,12 @@
ifeq ($(SIM),RTL)
iverilog $(SIM_DEFINES) -I $(PDK_PATH) \
-I $(CARAVEL_BEHAVIOURAL_MODELS) -I $(CARAVEL_RTL_PATH) \
- -I $(UPRJ_BEHAVIOURAL_MODELS) -I $(UPRJ_RTL_PATH) \
+ -I $(UPRJ_BEHAVIOURAL_MODELS) -I $(UPRJ_RTL_PATH) -I $(MGMT_SOC_RTL_PATH) \
$< -o $@
else
iverilog $(SIM_DEFINES) -DGL -I $(PDK_PATH) \
-I $(CARAVEL_BEHAVIOURAL_MODELS) -I $(CARAVEL_RTL_PATH) -I $(CARAVEL_VERILOG_PATH) \
- -I $(UPRJ_BEHAVIOURAL_MODELS) -I$(UPRJ_RTL_PATH) -I $(UPRJ_VERILOG_PATH) \
+ -I $(UPRJ_BEHAVIOURAL_MODELS) -I$(UPRJ_RTL_PATH) -I $(UPRJ_VERILOG_PATH) -I $(MGMT_SOC_VERILOG_PATH) \
$< -o $@
endif
diff --git a/verilog/dv/mprj_stimulus/mprj_stimulus.c b/verilog/dv/mprj_stimulus/mprj_stimulus.c
index e4d0a2d..7d2c29a 100644
--- a/verilog/dv/mprj_stimulus/mprj_stimulus.c
+++ b/verilog/dv/mprj_stimulus/mprj_stimulus.c
@@ -31,19 +31,21 @@
// designed to read the project count through the
// logic analyzer probes.
// I/O 6 is configured for the UART Tx line
+
uint32_t testval;
- reg_spimaster_config = 0xa002; // Enable, prescaler = 2
+ reg_hkspi_disable = 1; // Shut off the housekeeping SPI,
+ // so we can use the pins.
reg_mprj_datal = 0x00000000;
reg_mprj_datah = 0x00000000;
- reg_mprj_io_37 = GPIO_MODE_MGMT_STD_OUTPUT;;
- reg_mprj_io_36 = GPIO_MODE_MGMT_STD_OUTPUT;;
- reg_mprj_io_35 = GPIO_MODE_MGMT_STD_BIDIRECTIONAL;
- reg_mprj_io_34 = GPIO_MODE_MGMT_STD_BIDIRECTIONAL;
- reg_mprj_io_33 = GPIO_MODE_MGMT_STD_BIDIRECTIONAL;
- reg_mprj_io_32 = GPIO_MODE_MGMT_STD_BIDIRECTIONAL;
+ reg_mprj_io_37 = GPIO_MODE_MGMT_STD_OUTPUT;
+ reg_mprj_io_36 = GPIO_MODE_MGMT_STD_OUTPUT;
+ reg_mprj_io_35 = GPIO_MODE_MGMT_STD_OUTPUT;
+ reg_mprj_io_34 = GPIO_MODE_MGMT_STD_OUTPUT;
+ reg_mprj_io_33 = GPIO_MODE_MGMT_STD_OUTPUT;
+ reg_mprj_io_32 = GPIO_MODE_MGMT_STD_OUTPUT;
reg_mprj_io_31 = GPIO_MODE_MGMT_STD_OUTPUT;
reg_mprj_io_30 = GPIO_MODE_MGMT_STD_OUTPUT;
@@ -71,18 +73,13 @@
reg_mprj_io_9 = GPIO_MODE_USER_STD_OUT_MONITORED;
reg_mprj_io_8 = GPIO_MODE_USER_STD_OUT_MONITORED;
reg_mprj_io_7 = GPIO_MODE_USER_STD_OUT_MONITORED;
- reg_mprj_io_5 = GPIO_MODE_USER_STD_OUTPUT;
- reg_mprj_io_4 = GPIO_MODE_USER_STD_OUTPUT;
- reg_mprj_io_3 = GPIO_MODE_USER_STD_OUTPUT;
- reg_mprj_io_2 = GPIO_MODE_USER_STD_OUTPUT;
- reg_mprj_io_1 = GPIO_MODE_USER_STD_OUTPUT;
- reg_mprj_io_0 = GPIO_MODE_USER_STD_OUTPUT;
-
- reg_mprj_io_6 = GPIO_MODE_MGMT_STD_OUTPUT;
-
- // Set UART clock to 64 kbaud (enable before I/O configuration)
- reg_uart_clkdiv = 625;
- reg_uart_enable = 1;
+ reg_mprj_io_6 = GPIO_MODE_USER_STD_OUT_MONITORED;
+ reg_mprj_io_5 = GPIO_MODE_USER_STD_OUT_MONITORED;
+ reg_mprj_io_4 = GPIO_MODE_USER_STD_OUT_MONITORED;
+ reg_mprj_io_3 = GPIO_MODE_USER_STD_OUT_MONITORED;
+ reg_mprj_io_2 = GPIO_MODE_USER_STD_OUT_MONITORED;
+ reg_mprj_io_1 = GPIO_MODE_USER_STD_OUT_MONITORED;
+ reg_mprj_io_0 = GPIO_MODE_USER_STD_OUT_MONITORED;
/* Apply configuration */
reg_mprj_xfer = 1;
@@ -116,17 +113,24 @@
// Test ability to force data on channel 37
// NOTE: Only the low 6 bits of reg_mprj_datah are meaningful
- reg_mprj_datah = 0xffffffca;
+
+ reg_mprj_datah = 0x0f0f0fc0;
+ reg_mprj_datah = 0x00000000;
+ reg_mprj_datah = 0x0f0f0fca;
+ reg_mprj_datah = 0x0000000a;
+ reg_mprj_datah = 0x0f0f0fc0;
reg_mprj_datah = 0x00000000;
reg_mprj_datah = 0x0f0f0fc5;
- reg_mprj_datah = 0x00000000;
+ reg_mprj_datah = 0x00000005;
// Test ability to read back data generated by the user project
// on the "monitored" outputs. Read from the lower 16 bits and
// copy the value to the upper 16 bits.
testval = reg_mprj_datal;
- reg_mprj_datal = ((testval & 0xff8) << 9) & 0xffff0000;
+ reg_mprj_datal = (testval << 16);
+ testval = reg_mprj_datal;
+ reg_mprj_datal = (testval << 16);
// Flag end of the test
reg_mprj_datal = 0xAB510000;
diff --git a/verilog/dv/mprj_stimulus/mprj_stimulus_tb.v b/verilog/dv/mprj_stimulus/mprj_stimulus_tb.v
index 1409015..0ac0b42 100644
--- a/verilog/dv/mprj_stimulus/mprj_stimulus_tb.v
+++ b/verilog/dv/mprj_stimulus/mprj_stimulus_tb.v
@@ -28,17 +28,8 @@
reg RSTB;
reg CSB;
reg power1, power2;
- reg power3, power4;
-
- wire HIGH;
- wire LOW;
- wire TRI;
- assign HIGH = 1'b1;
- assign LOW = 1'b0;
- assign TRI = 1'bz;
wire gpio;
- wire uart_tx;
wire [37:0] mprj_io;
wire [15:0] checkbits;
wire [3:0] status;
@@ -46,8 +37,10 @@
// Signals Assignment
assign checkbits = mprj_io[31:16];
assign status = mprj_io[35:32];
- assign uart_tx = mprj_io[6];
- assign mprj_io[3] = (CSB == 1'b1) ? 1'b1 : 1'bz;
+
+ // Force CSB high until simulation is underway
+ // Note: The CSB GPIO pin default needs to be set to a pull-up. . .
+ assign mprj_io[3] = CSB;
always #12.5 clock <= (clock === 1'b0);
@@ -74,23 +67,29 @@
$display("Monitor: mprj_stimulus test started");
wait(status == 4'ha);
wait(status == 4'h5);
- // Value 0009 reflects copying user-controlled outputs to memory and back
- // to management-controlled outputs.
- wait(checkbits == 16'h0009);
+
+ // Values reflect copying user-controlled outputs to memory and back
+ // to management-controlled outputs. Note that there is a slight
+ // discrepancy in timing when using gate level simulation; either
+ // of the specified values is okay.
+
+ wait(checkbits == 16'h0840 || checkbits == 16'h0841);
+ wait(checkbits == 16'h0a00 || checkbits == 16'h0a01);
+
wait(checkbits == 16'hAB51);
$display("Monitor: mprj_stimulus test Passed");
#10000;
$finish;
end
- // Reset Operation
+ // Reset Operation
initial begin
RSTB <= 1'b0;
- CSB <= 1'b1; // Force CSB high
+ CSB <= 1'b1;
#2000;
- RSTB <= 1'b1; // Release reset
- #170000;
- CSB = 1'b0; // CSB can be released
+ RSTB <= 1'b1; // Release reset
+ #200000;
+ CSB <= 1'bz; // Stop driving CSB
end
initial begin // Power-up sequence
@@ -148,10 +147,5 @@
.io3() // not used
);
- // Testbench UART
- tbuart tbuart (
- .ser_rx(uart_tx)
- );
-
endmodule
`default_nettype wire
