Minor RTL fixes, switching to wrapped GPIOV2
- use USER2_ABUTMENT_PINS for the second of the vssio and vddio pads
- do core-facing power-to-signal connections using the auto-router
- fix corner pad power connections and keep them for LVS purposes
- add a bunch of missing USE_POWER_PINS guards
diff --git a/verilog/rtl/caravel.v b/verilog/rtl/caravel.v
index 130a35c..d895d2c 100644
--- a/verilog/rtl/caravel.v
+++ b/verilog/rtl/caravel.v
@@ -23,6 +23,7 @@
`include "libs.ref/sky130_fd_io/verilog/sky130_fd_io.v"
`include "libs.ref/sky130_fd_io/verilog/sky130_ef_io.v"
+`include "libs.tech/openlane/custom_cells/verilog/sky130_ef_io__gpiov2_pad_wrapped.v"
`include "libs.ref/sky130_fd_sc_hd/verilog/primitives.v"
`include "libs.ref/sky130_fd_sc_hd/verilog/sky130_fd_sc_hd.v"
@@ -181,8 +182,8 @@
// irq = mprj_io[7] (input)
wire [`MPRJ_IO_PADS-1:0] mgmt_io_in;
- wire jtag_out, sdo_out;
- wire jtag_outenb, sdo_outenb;
+ wire jtag_out, sdo_out;
+ wire jtag_outenb, sdo_outenb;
wire [`MPRJ_IO_PADS-3:0] mgmt_io_nc1; /* no-connects */
wire [`MPRJ_IO_PADS-3:0] mgmt_io_nc3; /* no-connects */
@@ -340,15 +341,15 @@
wire mprj2_vdd_pwrgood;
// Storage area
- // Management R/W interface
- wire [`RAM_BLOCKS-1:0] mgmt_ena;
+ // Management R/W interface
+ wire [`RAM_BLOCKS-1:0] mgmt_ena;
wire [`RAM_BLOCKS-1:0] mgmt_wen;
wire [(`RAM_BLOCKS*4)-1:0] mgmt_wen_mask;
wire [7:0] mgmt_addr;
wire [31:0] mgmt_wdata;
wire [(`RAM_BLOCKS*32)-1:0] mgmt_rdata;
// Management RO interface
- wire mgmt_ena_ro;
+ wire mgmt_ena_ro;
wire [7:0] mgmt_addr_ro;
wire [31:0] mgmt_rdata_ro;
@@ -387,7 +388,7 @@
.core_clk(caravel_clk),
.user_clk(caravel_clk2),
.core_rstn(caravel_rstn),
- // Logic Analyzer
+ // Logic Analyzer
.la_input(la_data_in_mprj),
.la_output(la_data_out_mprj),
.la_oen(la_oen_mprj),
@@ -417,8 +418,8 @@
.mprj_dat_i(mprj_dat_i_core),
// mask data
.mask_rev(mask_rev),
- // MGMT area R/W interface
- .mgmt_ena(mgmt_ena),
+ // MGMT area R/W interface
+ .mgmt_ena(mgmt_ena),
.mgmt_wen_mask(mgmt_wen_mask),
.mgmt_wen(mgmt_wen),
.mgmt_addr(mgmt_addr),
@@ -477,12 +478,13 @@
.user2_vdd_powergood(mprj2_vdd_pwrgood)
);
-
+
/*----------------------------------------------*/
/* Wrapper module around the user project */
/*----------------------------------------------*/
- user_project_wrapper mprj (
+ user_project_wrapper mprj (
+ `ifdef USE_POWER_PINS
.vdda1(vdda1), // User area 1 3.3V power
.vdda2(vdda2), // User area 2 3.3V power
.vssa1(vssa1), // User area 1 analog ground
@@ -491,10 +493,11 @@
.vccd2(vccd2), // User area 2 1.8V power
.vssd1(vssd1), // User area 1 digital ground
.vssd2(vssd2), // User area 2 digital ground
+ `endif
.wb_clk_i(mprj_clock),
.wb_rst_i(mprj_reset),
- // MGMT SoC Wishbone Slave
+ // MGMT SoC Wishbone Slave
.wbs_cyc_i(mprj_cyc_o_user),
.wbs_stb_i(mprj_stb_o_user),
.wbs_we_i(mprj_we_o_user),
@@ -659,7 +662,7 @@
.mgmt_addr(mgmt_addr),
.mgmt_wdata(mgmt_wdata),
.mgmt_rdata(mgmt_rdata),
- // Management RO interface
+ // Management RO interface
.mgmt_ena_ro(mgmt_ena_ro),
.mgmt_addr_ro(mgmt_addr_ro),
.mgmt_rdata_ro(mgmt_rdata_ro)
diff --git a/verilog/rtl/chip_io.v b/verilog/rtl/chip_io.v
index b8ba7f1..44fa93f 100644
--- a/verilog/rtl/chip_io.v
+++ b/verilog/rtl/chip_io.v
@@ -81,33 +81,68 @@
// rails and grounds, and one back-to-back diode which connects
// between the first LV clamp ground and any other ground.
- sky130_ef_io__vddio_hvc_pad mgmt_vddio_hvclamp_pad [1:0] (
+ sky130_ef_io__vddio_hvc_pad mgmt_vddio_hvclamp_pad[0] (
`MGMT_ABUTMENT_PINS
+`ifdef TOP_ROUTING
+ .VDDIO(vddio),
+`endif
+ `HVCLAMP_PINS(vddio, vssio)
+ );
+
+ // lies in user area 2
+ sky130_ef_io__vddio_hvc_pad mgmt_vddio_hvclamp_pad[1] (
+ `USER2_ABUTMENT_PINS
+`ifdef TOP_ROUTING
+ .VDDIO(vddio),
+`endif
`HVCLAMP_PINS(vddio, vssio)
);
sky130_ef_io__vdda_hvc_pad mgmt_vdda_hvclamp_pad (
`MGMT_ABUTMENT_PINS
+`ifdef TOP_ROUTING
+ .VDDA(vdda),
+`endif
`HVCLAMP_PINS(vdda, vssa)
);
sky130_ef_io__vccd_lvc_pad mgmt_vccd_lvclamp_pad (
`MGMT_ABUTMENT_PINS
+`ifdef TOP_ROUTING
+ .VCCD(vccd),
+`endif
`LVCLAMP_PINS(vccd, vssio, vccd, vssd, vssa)
);
- sky130_ef_io__vssio_hvc_pad mgmt_vssio_hvclamp_pad [1:0] (
+ sky130_ef_io__vssio_hvc_pad mgmt_vssio_hvclamp_pad[0] (
`MGMT_ABUTMENT_PINS
+`ifdef TOP_ROUTING
+ .VSSIO(vssio),
+`endif
+ `HVCLAMP_PINS(vddio, vssio)
+ );
+
+ sky130_ef_io__vssio_hvc_pad mgmt_vssio_hvclamp_pad[1] (
+ `USER2_ABUTMENT_PINS
+`ifdef TOP_ROUTING
+ .VSSIO(vssio),
+`endif
`HVCLAMP_PINS(vddio, vssio)
);
sky130_ef_io__vssa_hvc_pad mgmt_vssa_hvclamp_pad (
`MGMT_ABUTMENT_PINS
+`ifdef TOP_ROUTING
+ .VSSA(vssa),
+`endif
`HVCLAMP_PINS(vdda, vssa)
);
sky130_ef_io__vssd_lvc_pad mgmt_vssd_lvclmap_pad (
`MGMT_ABUTMENT_PINS
+`ifdef TOP_ROUTING
+ .VSSD(vssd),
+`endif
`LVCLAMP_PINS(vccd, vssio, vccd, vssd, vssa)
);
@@ -116,21 +151,33 @@
sky130_ef_io__vdda_hvc_pad user1_vdda_hvclamp_pad [1:0] (
`USER1_ABUTMENT_PINS
+`ifdef TOP_ROUTING
+ .VDDA(vdda1),
+`endif
`HVCLAMP_PINS(vdda1, vssa1)
);
sky130_ef_io__vccd_lvc_pad user1_vccd_lvclamp_pad (
`USER1_ABUTMENT_PINS
+`ifdef TOP_ROUTING
+ .VCCD(vccd1),
+`endif
`LVCLAMP_PINS(vccd1, vssd1, vccd1, vssd, vssio)
);
sky130_ef_io__vssa_hvc_pad user1_vssa_hvclamp_pad [1:0] (
`USER1_ABUTMENT_PINS
+`ifdef TOP_ROUTING
+ .VSSA(vssa1),
+`endif
`HVCLAMP_PINS(vdda1, vssa1)
);
sky130_ef_io__vssd_lvc_pad user1_vssd_lvclmap_pad (
`USER1_ABUTMENT_PINS
+`ifdef TOP_ROUTING
+ .VSSD(vssd1),
+`endif
`LVCLAMP_PINS(vccd1, vssd1, vccd1, vssd, vssio)
);
@@ -139,39 +186,51 @@
sky130_ef_io__vdda_hvc_pad user2_vdda_hvclamp_pad (
`USER2_ABUTMENT_PINS
+`ifdef TOP_ROUTING
+ .VDDA(vdda2),
+`endif
`HVCLAMP_PINS(vdda2, vssa2)
);
sky130_ef_io__vccd_lvc_pad user2_vccd_lvclamp_pad (
`USER2_ABUTMENT_PINS
+`ifdef TOP_ROUTING
+ .VCCD(vccd2),
+`endif
`LVCLAMP_PINS(vccd2, vssd2, vccd2, vssd, vssio)
);
sky130_ef_io__vssa_hvc_pad user2_vssa_hvclamp_pad (
`USER2_ABUTMENT_PINS
+`ifdef TOP_ROUTING
+ .VSSA(vssa2),
+`endif
`HVCLAMP_PINS(vdda2, vssa2)
);
sky130_ef_io__vssd_lvc_pad user2_vssd_lvclmap_pad (
`USER2_ABUTMENT_PINS
+`ifdef TOP_ROUTING
+ .VSSD(vssd2),
+`endif
`LVCLAMP_PINS(vccd2, vssd2, vccd2, vssd, vssio)
);
wire [2:0] dm_all =
{gpio_mode1_core, gpio_mode1_core, gpio_mode0_core};
- wire[2:0] flash_io0_mode =
+ wire[2:0] flash_io0_mode =
{flash_io0_ieb_core, flash_io0_ieb_core, flash_io0_oeb_core};
- wire[2:0] flash_io1_mode =
+ wire[2:0] flash_io1_mode =
{flash_io1_ieb_core, flash_io1_ieb_core, flash_io1_oeb_core};
// Management clock input pad
- `INPUT_PAD(clock, clock_core);
+ `INPUT_PAD(clock, clock_core);
// Management GPIO pad
`INOUT_PAD(
gpio, gpio_in_core, gpio_out_core,
gpio_inenb_core, gpio_outenb_core, dm_all);
-
+
// Management Flash SPI pads
`INOUT_PAD(
flash_io0, flash_io0_di_core, flash_io0_do_core,
@@ -180,7 +239,7 @@
flash_io1, flash_io1_di_core, flash_io1_do_core,
flash_io1_ieb_core, flash_io1_oeb_core, flash_io1_mode);
- `OUTPUT_PAD(flash_csb, flash_csb_core, flash_csb_ieb_core, flash_csb_oeb_core);
+ `OUTPUT_PAD(flash_csb, flash_csb_core, flash_csb_ieb_core, flash_csb_oeb_core);
`OUTPUT_PAD(flash_clk, flash_clk_core, flash_clk_ieb_core, flash_clk_oeb_core);
// NOTE: The analog_out pad from the raven chip has been replaced by
@@ -188,6 +247,7 @@
// power-on-reset circuit. The XRES pad is used for providing a glitch-
// free reset.
+ wire xresloop;
sky130_fd_io__top_xres4v2 resetb_pad (
`MGMT_ABUTMENT_PINS
`ifndef TOP_ROUTING
@@ -208,24 +268,29 @@
);
// Corner cells (These are overlay cells; it is not clear what is normally
- // supposed to go under them.)
+ // supposed to go under them.)
- `ifndef TOP_ROUTING
sky130_ef_io__corner_pad mgmt_corner [1:0] (
+`ifndef TOP_ROUTING
.VSSIO(vssio),
.VDDIO(vddio),
.VDDIO_Q(vddio_q),
.VSSIO_Q(vssio_q),
.AMUXBUS_A(analog_a),
.AMUXBUS_B(analog_b),
- .VSSD(vssio),
- .VSSA(vssio),
+ .VSSD(vssd),
+ .VSSA(vssa),
.VSWITCH(vddio),
.VDDA(vdda),
.VCCD(vccd),
.VCCHIB(vccd)
+`else
+ .VCCHIB()
+`endif
+
);
sky130_ef_io__corner_pad user1_corner (
+`ifndef TOP_ROUTING
.VSSIO(vssio),
.VDDIO(vddio),
.VDDIO_Q(vddio_q),
@@ -238,8 +303,12 @@
.VDDA(vdda1),
.VCCD(vccd1),
.VCCHIB(vccd)
+`else
+ .VCCHIB()
+`endif
);
sky130_ef_io__corner_pad user2_corner (
+`ifndef TOP_ROUTING
.VSSIO(vssio),
.VDDIO(vddio),
.VDDIO_Q(vddio_q),
@@ -252,8 +321,10 @@
.VDDA(vdda2),
.VCCD(vccd2),
.VCCHIB(vccd)
+`else
+ .VCCHIB()
+`endif
);
- `endif
mprj_io mprj_pads(
.vddio(vddio),
diff --git a/verilog/rtl/mprj_io.v b/verilog/rtl/mprj_io.v
index d8cb449..ad59c18 100644
--- a/verilog/rtl/mprj_io.v
+++ b/verilog/rtl/mprj_io.v
@@ -44,7 +44,7 @@
wire [`MPRJ_IO_PADS-1:0] loop1_io;
wire [6:0] no_connect;
- sky130_ef_io__gpiov2_pad area1_io_pad [AREA1PADS - 1:0] (
+ sky130_ef_io__gpiov2_pad_wrapped area1_io_pad [AREA1PADS - 1:0] (
`USER1_ABUTMENT_PINS
`ifndef TOP_ROUTING
.PAD(io[AREA1PADS - 1:0]),
@@ -75,7 +75,7 @@
.TIE_LO_ESD(loop1_io[AREA1PADS - 1:0])
);
- sky130_ef_io__gpiov2_pad area2_io_pad [`MPRJ_IO_PADS - AREA1PADS - 1:0] (
+ sky130_ef_io__gpiov2_pad_wrapped area2_io_pad [`MPRJ_IO_PADS - AREA1PADS - 1:0] (
`USER2_ABUTMENT_PINS
`ifndef TOP_ROUTING
.PAD(io[`MPRJ_IO_PADS - 1:AREA1PADS]),
diff --git a/verilog/rtl/pads.v b/verilog/rtl/pads.v
index d56999a..0e914b6 100644
--- a/verilog/rtl/pads.v
+++ b/verilog/rtl/pads.v
@@ -60,7 +60,7 @@
`define INPUT_PAD(X,Y) \
wire loop_``X; \
- sky130_ef_io__gpiov2_pad X``_pad ( \
+ sky130_ef_io__gpiov2_pad_wrapped X``_pad ( \
`MGMT_ABUTMENT_PINS \
`ifndef TOP_ROUTING \
.PAD(X), \
@@ -92,7 +92,7 @@
`define OUTPUT_PAD(X,Y,INPUT_DIS,OUT_EN_N) \
wire loop_``X; \
- sky130_ef_io__gpiov2_pad X``_pad ( \
+ sky130_ef_io__gpiov2_pad_wrapped X``_pad ( \
`MGMT_ABUTMENT_PINS \
`ifndef TOP_ROUTING \
.PAD(X), \
@@ -123,7 +123,8 @@
.TIE_LO_ESD(loop_``X))
`define INOUT_PAD(X,Y,Y_OUT,INPUT_DIS,OUT_EN_N,MODE) \
- sky130_ef_io__gpiov2_pad X``_pad ( \
+ wire loop_``X; \
+ sky130_ef_io__gpiov2_pad_wrapped X``_pad ( \
`MGMT_ABUTMENT_PINS \
`ifndef TOP_ROUTING \
.PAD(X),\
diff --git a/verilog/rtl/user_proj_example.v b/verilog/rtl/user_proj_example.v
index 5546130..3445aa0 100644
--- a/verilog/rtl/user_proj_example.v
+++ b/verilog/rtl/user_proj_example.v
@@ -23,6 +23,7 @@
module user_proj_example #(
parameter BITS = 32
)(
+`ifdef USE_POWER_PINS
inout vdda1, // User area 1 3.3V supply
inout vdda2, // User area 2 3.3V supply
inout vssa1, // User area 1 analog ground
@@ -31,6 +32,7 @@
inout vccd2, // User area 2 1.8v supply
inout vssd1, // User area 1 digital ground
inout vssd2, // User area 2 digital ground
+`endif
// Wishbone Slave ports (WB MI A)
input wb_clk_i,
diff --git a/verilog/rtl/user_project_wrapper.v b/verilog/rtl/user_project_wrapper.v
index b5460f5..0b23a50 100644
--- a/verilog/rtl/user_project_wrapper.v
+++ b/verilog/rtl/user_project_wrapper.v
@@ -17,6 +17,7 @@
module user_project_wrapper #(
parameter BITS = 32
)(
+`ifdef USE_POWER_PINS
inout vdda1, // User area 1 3.3V supply
inout vdda2, // User area 2 3.3V supply
inout vssa1, // User area 1 analog ground
@@ -25,6 +26,7 @@
inout vccd2, // User area 2 1.8v supply
inout vssd1, // User area 1 digital ground
inout vssd2, // User area 2 digital ground
+`endif
// Wishbone Slave ports (WB MI A)
input wb_clk_i,
@@ -63,6 +65,7 @@
/*--------------------------------------*/
user_proj_example mprj (
+ `ifdef USE_POWER_PINS
.vdda1(vdda1), // User area 1 3.3V power
.vdda2(vdda2), // User area 2 3.3V power
.vssa1(vssa1), // User area 1 analog ground
@@ -71,6 +74,7 @@
.vccd2(vccd2), // User area 2 1.8V power
.vssd1(vssd1), // User area 1 digital ground
.vssd2(vssd2), // User area 2 digital ground
+ `endif
// MGMT core clock and reset
