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Merge pull request #428 from paulusmack/ecpix-5

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ECPIX-5 support
pull/430/head
Paul Mackerras 7 months ago committed by GitHub
parent 8be7c53ea0 84ae593a09
commit 41da88e6d1
No known key found for this signature in database
GPG Key ID: B5690EEEBB952194
42 changed files with 123542 additions and 84474 deletions
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21
Makefile
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@ -164,7 +164,7 @@ RAM_INIT_FILE ?=hello_world/hello_world.hex
#MEMORY_SIZE=393216 #MEMORY_SIZE=393216
#RAM_INIT_FILE=micropython/firmware.hex #RAM_INIT_FILE=micropython/firmware.hex


FPGA_TARGET ?= ORANGE-CRAB-0.21 FPGA_TARGET ?= ECPIX-5


clkgen=fpga/clk_gen_ecp5.vhd clkgen=fpga/clk_gen_ecp5.vhd
toplevel=fpga/top-generic.vhdl toplevel=fpga/top-generic.vhdl
@ -199,7 +199,7 @@ DFU_PRODUCT=5af0
ECP_FLASH_OFFSET=0x80000 ECP_FLASH_OFFSET=0x80000
toplevel=fpga/top-orangecrab0.2.vhdl toplevel=fpga/top-orangecrab0.2.vhdl
litedram_target=orangecrab-85-0.2 litedram_target=orangecrab-85-0.2
soc_extra_v += litesdcard/generated/lattice/litesdcard_core.v soc_extra_v += litesdcard/generated/lattice.48e6/litesdcard_core.v
dmi_dtm=dmi_dtm_ecp5.vhdl dmi_dtm=dmi_dtm_ecp5.vhdl
endif endif


@ -215,6 +215,23 @@ OPENOCD_JTAG_CONFIG=openocd/ecp5-evn.cfg
OPENOCD_DEVICE_CONFIG=openocd/LFE5UM5G-85F.cfg OPENOCD_DEVICE_CONFIG=openocd/LFE5UM5G-85F.cfg
endif endif


# ECPIX-5
ifeq ($(FPGA_TARGET), ECPIX-5)
RESET_LOW=true
CLK_INPUT=100000000
CLK_FREQUENCY=50000000
LPF=constraints/ecpix-5.lpf
PACKAGE=CABGA554
NEXTPNR_FLAGS=--um5g-85k --speed 8 --freq 50 --timing-allow-fail --ignore-loops
OPENOCD_JTAG_CONFIG=openocd/ecpix-5.cfg
OPENOCD_DEVICE_CONFIG=openocd/LFE5UM5G-85F.cfg
toplevel=fpga/top-ecpix5.vhdl
litedram_target=ecpix-5
soc_extra_v += litesdcard/generated/lattice.50e6/litesdcard_core.v
soc_extra_v += liteeth/generated/ecpix-5/liteeth_core.v
dmi_dtm=dmi_dtm_ecp5.vhdl
endif

ifneq ($(litedram_target),) ifneq ($(litedram_target),)
soc_extra_synth += litedram/extras/litedram-wrapper-l2.vhdl \ soc_extra_synth += litedram/extras/litedram-wrapper-l2.vhdl \
litedram/generated/$(litedram_target)/litedram-initmem.vhdl litedram/generated/$(litedram_target)/litedram-initmem.vhdl

359
constraints/ecpix-5.lpf
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@ -0,0 +1,359 @@
LOCATE COMP "ext_clk" SITE "K23";
IOBUF PORT "ext_clk" IO_TYPE=LVCMOS33;

LOCATE COMP "ext_rst_n" SITE "N5";
LOCATE COMP "gsrn" SITE "AB1";
IOBUF PORT "ext_rst_n" IO_TYPE=LVCMOS33;
IOBUF PORT "gsrn" IO_TYPE=LVCMOS33;

LOCATE COMP "uart0_txd" SITE "R24";
LOCATE COMP "uart0_rxd" SITE "R26";

IOBUF PORT "uart0_txd" IO_TYPE=LVCMOS33;
IOBUF PORT "uart0_rxd" IO_TYPE=LVCMOS33;

LOCATE COMP "led5_r_n" SITE "T23";
LOCATE COMP "led5_g_n" SITE "R21";
LOCATE COMP "led5_b_n" SITE "T22";

IOBUF PORT "led5_r_n" IO_TYPE=LVCMOS33;
IOBUF PORT "led5_g_n" IO_TYPE=LVCMOS33;
IOBUF PORT "led5_b_n" IO_TYPE=LVCMOS33;

LOCATE COMP "led6_r_n" SITE "U21";
LOCATE COMP "led6_g_n" SITE "W21";
LOCATE COMP "led6_b_n" SITE "T24";

IOBUF PORT "led6_r_n" IO_TYPE=LVCMOS33;
IOBUF PORT "led6_g_n" IO_TYPE=LVCMOS33;
IOBUF PORT "led6_b_n" IO_TYPE=LVCMOS33;

LOCATE COMP "led7_r_n" SITE "K21";
LOCATE COMP "led7_g_n" SITE "K24";
LOCATE COMP "led7_b_n" SITE "M21";

IOBUF PORT "led7_r_n" IO_TYPE=LVCMOS33;
IOBUF PORT "led7_g_n" IO_TYPE=LVCMOS33;
IOBUF PORT "led7_b_n" IO_TYPE=LVCMOS33;

LOCATE COMP "led8_r_n" SITE "P21";
LOCATE COMP "led8_g_n" SITE "R23";
LOCATE COMP "led8_b_n" SITE "P22";

IOBUF PORT "led8_r_n" IO_TYPE=LVCMOS33;
IOBUF PORT "led8_g_n" IO_TYPE=LVCMOS33;
IOBUF PORT "led8_b_n" IO_TYPE=LVCMOS33;

// We use USRMCLK instead for clk
// LOCATE COMP "spi_flash_clk" SITE "U16";
// IOBUF PORT "spi_flash_clk" IO_TYPE=LVCMOS33;
LOCATE COMP "spi_flash_cs_n" SITE "AA2";
IOBUF PORT "spi_flash_cs_n" IO_TYPE=LVCMOS33;
LOCATE COMP "spi_flash_mosi" SITE "AE2";
IOBUF PORT "spi_flash_mosi" IO_TYPE=LVCMOS33;
LOCATE COMP "spi_flash_miso" SITE "AD2";
IOBUF PORT "spi_flash_miso" IO_TYPE=LVCMOS33;
LOCATE COMP "spi_flash_wp_n" SITE "AF2";
IOBUF PORT "spi_flash_wp_n" IO_TYPE=LVCMOS33;
LOCATE COMP "spi_flash_hold_n" SITE "AE1";
IOBUF PORT "spi_flash_hold_n" IO_TYPE=LVCMOS33;

// Ethernet
LOCATE COMP "rgmii_clocks_rx" SITE "E11";
LOCATE COMP "rgmii_clocks_tx" SITE "A12";
LOCATE COMP "rgmii_rst_n" SITE "C13";
LOCATE COMP "rgmii_int_n" SITE "B13";
LOCATE COMP "rgmii_mdc" SITE "C11";
LOCATE COMP "rgmii_mdio" SITE "A13";
LOCATE COMP "rgmii_rx_ctl" SITE "A11";
LOCATE COMP "rgmii_rx_data[0]" SITE "B11";
LOCATE COMP "rgmii_rx_data[1]" SITE "A10";
LOCATE COMP "rgmii_rx_data[2]" SITE "B10";
LOCATE COMP "rgmii_rx_data[3]" SITE "A9";
LOCATE COMP "rgmii_tx_ctl" SITE "C9";
LOCATE COMP "rgmii_tx_data[0]" SITE "D8";
LOCATE COMP "rgmii_tx_data[1]" SITE "C8";
LOCATE COMP "rgmii_tx_data[2]" SITE "B8";
LOCATE COMP "rgmii_tx_data[3]" SITE "A8";
IOBUF PORT "rgmii_clocks_rx" IO_TYPE=LVCMOS33;
IOBUF PORT "rgmii_clocks_tx" IO_TYPE=LVCMOS33;
IOBUF PORT "rgmii_rst_n" IO_TYPE=LVCMOS33;
IOBUF PORT "rgmii_int_n" IO_TYPE=LVCMOS33;
IOBUF PORT "rgmii_mdc" IO_TYPE=LVCMOS33;
IOBUF PORT "rgmii_mdio" IO_TYPE=LVCMOS33;
IOBUF PORT "rgmii_rx_ctl" IO_TYPE=LVCMOS33;
IOBUF PORT "rgmii_rx_data[0]" IO_TYPE=LVCMOS33 PULLMODE=UP;
IOBUF PORT "rgmii_rx_data[1]" IO_TYPE=LVCMOS33 PULLMODE=UP;
IOBUF PORT "rgmii_rx_data[2]" IO_TYPE=LVCMOS33 PULLMODE=UP;
IOBUF PORT "rgmii_rx_data[3]" IO_TYPE=LVCMOS33 PULLMODE=UP;
IOBUF PORT "rgmii_tx_ctl" IO_TYPE=LVCMOS33;
IOBUF PORT "rgmii_tx_data[0]" IO_TYPE=LVCMOS33;
IOBUF PORT "rgmii_tx_data[1]" IO_TYPE=LVCMOS33;
IOBUF PORT "rgmii_tx_data[2]" IO_TYPE=LVCMOS33;
IOBUF PORT "rgmii_tx_data[3]" IO_TYPE=LVCMOS33;
FREQUENCY PORT "eth_rx_clk" 125.0 MHz;
FREQUENCY PORT "eth_tx_clk" 125.0 MHz;
FREQUENCY PORT "rgmii_clocks_rx" 125.0 MHz;

// SD card slot and level translator
LOCATE COMP "sdcard_data[0]" SITE "N26";
LOCATE COMP "sdcard_data[1]" SITE "N25";
LOCATE COMP "sdcard_data[2]" SITE "N23";
LOCATE COMP "sdcard_data[3]" SITE "N21";
LOCATE COMP "sdcard_cmd" SITE "M24";
LOCATE COMP "sdcard_clk" SITE "P24";
LOCATE COMP "sdcard_cd" SITE "L22";
LOCATE COMP "sdcard_cmd_dir" SITE "M23";
LOCATE COMP "sdcard_dat0_dir" SITE "N24";
LOCATE COMP "sdcard_dat13_dir" SITE "P26";
LOCATE COMP "sdcard_vsel" SITE "L24";

IOBUF PORT "sdcard_data[0]" IO_TYPE=LVCMOS33 SLEWRATE=FAST PULLMODE=UP;
IOBUF PORT "sdcard_data[1]" IO_TYPE=LVCMOS33 SLEWRATE=FAST PULLMODE=UP;
IOBUF PORT "sdcard_data[2]" IO_TYPE=LVCMOS33 SLEWRATE=FAST PULLMODE=UP;
IOBUF PORT "sdcard_data[3]" IO_TYPE=LVCMOS33 SLEWRATE=FAST PULLMODE=UP;
IOBUF PORT "sdcard_cmd" IO_TYPE=LVCMOS33 SLEWRATE=FAST PULLMODE=UP;
IOBUF PORT "sdcard_clk" IO_TYPE=LVCMOS33 SLEWRATE=FAST;
IOBUF PORT "sdcard_cd" IO_TYPE=LVCMOS33;
IOBUF PORT "sdcard_cmd_dir" IO_TYPE=LVCMOS33 SLEWRATE=FAST PULLMODE=UP;
IOBUF PORT "sdcard_dat0_dir" IO_TYPE=LVCMOS33 SLEWRATE=FAST;
IOBUF PORT "sdcard_dat13_dir" IO_TYPE=LVCMOS33 SLEWRATE=FAST;
IOBUF PORT "sdcard_vsel" IO_TYPE=LVCMOS33 PULLMODE=DOWN;

// DDR3 SDRAM
LOCATE COMP "ddram_a[0]" SITE "T5";
LOCATE COMP "ddram_a[1]" SITE "M3";
LOCATE COMP "ddram_a[2]" SITE "L3";
LOCATE COMP "ddram_a[3]" SITE "V6";
LOCATE COMP "ddram_a[4]" SITE "K2";
LOCATE COMP "ddram_a[5]" SITE "W6";
LOCATE COMP "ddram_a[6]" SITE "K3";
LOCATE COMP "ddram_a[7]" SITE "L1";
LOCATE COMP "ddram_a[8]" SITE "H2";
LOCATE COMP "ddram_a[9]" SITE "L2";
LOCATE COMP "ddram_a[10]" SITE "N1";
LOCATE COMP "ddram_a[11]" SITE "J1";
LOCATE COMP "ddram_a[12]" SITE "M1";
LOCATE COMP "ddram_a[13]" SITE "K1";
LOCATE COMP "ddram_a[14]" SITE "H1";
IOBUF PORT "ddram_a[0]" IO_TYPE=SSTL15_I SLEWRATE=FAST;
IOBUF PORT "ddram_a[1]" IO_TYPE=SSTL15_I SLEWRATE=FAST;
IOBUF PORT "ddram_a[2]" IO_TYPE=SSTL15_I SLEWRATE=FAST;
IOBUF PORT "ddram_a[3]" IO_TYPE=SSTL15_I SLEWRATE=FAST;
IOBUF PORT "ddram_a[4]" IO_TYPE=SSTL15_I SLEWRATE=FAST;
IOBUF PORT "ddram_a[5]" IO_TYPE=SSTL15_I SLEWRATE=FAST;
IOBUF PORT "ddram_a[6]" IO_TYPE=SSTL15_I SLEWRATE=FAST;
IOBUF PORT "ddram_a[7]" IO_TYPE=SSTL15_I SLEWRATE=FAST;
IOBUF PORT "ddram_a[8]" IO_TYPE=SSTL15_I SLEWRATE=FAST;
IOBUF PORT "ddram_a[9]" IO_TYPE=SSTL15_I SLEWRATE=FAST;
IOBUF PORT "ddram_a[10]" IO_TYPE=SSTL15_I SLEWRATE=FAST;
IOBUF PORT "ddram_a[11]" IO_TYPE=SSTL15_I SLEWRATE=FAST;
IOBUF PORT "ddram_a[12]" IO_TYPE=SSTL15_I SLEWRATE=FAST;
IOBUF PORT "ddram_a[13]" IO_TYPE=SSTL15_I SLEWRATE=FAST;
IOBUF PORT "ddram_a[14]" IO_TYPE=SSTL15_I SLEWRATE=FAST;

LOCATE COMP "ddram_ba[0]" SITE "U6";
LOCATE COMP "ddram_ba[1]" SITE "N3";
LOCATE COMP "ddram_ba[2]" SITE "N4";
LOCATE COMP "ddram_ras_n" SITE "T3";
LOCATE COMP "ddram_cas_n" SITE "P2";
LOCATE COMP "ddram_we_n" SITE "R3";
LOCATE COMP "ddram_dm[0]" SITE "U4";
LOCATE COMP "ddram_dm[1]" SITE "U1";
IOBUF PORT "ddram_ba[0]" IO_TYPE=SSTL15_I SLEWRATE=FAST;
IOBUF PORT "ddram_ba[1]" IO_TYPE=SSTL15_I SLEWRATE=FAST;
IOBUF PORT "ddram_ba[2]" IO_TYPE=SSTL15_I SLEWRATE=FAST;
IOBUF PORT "ddram_ras_n" IO_TYPE=SSTL15_I SLEWRATE=FAST;
IOBUF PORT "ddram_cas_n" IO_TYPE=SSTL15_I SLEWRATE=FAST;
IOBUF PORT "ddram_we_n" IO_TYPE=SSTL15_I SLEWRATE=FAST;
IOBUF PORT "ddram_dm[0]" IO_TYPE=SSTL15_I SLEWRATE=FAST;
IOBUF PORT "ddram_dm[1]" IO_TYPE=SSTL15_I SLEWRATE=FAST;

LOCATE COMP "ddram_dq[0]" SITE "T4";
LOCATE COMP "ddram_dq[1]" SITE "W4";
LOCATE COMP "ddram_dq[2]" SITE "R4";
LOCATE COMP "ddram_dq[3]" SITE "W5";
LOCATE COMP "ddram_dq[4]" SITE "R6";
LOCATE COMP "ddram_dq[5]" SITE "P6";
LOCATE COMP "ddram_dq[6]" SITE "P5";
LOCATE COMP "ddram_dq[7]" SITE "P4";
LOCATE COMP "ddram_dq[8]" SITE "R1";
LOCATE COMP "ddram_dq[9]" SITE "W3";
LOCATE COMP "ddram_dq[10]" SITE "T2";
LOCATE COMP "ddram_dq[11]" SITE "V3";
LOCATE COMP "ddram_dq[12]" SITE "U3";
LOCATE COMP "ddram_dq[13]" SITE "W1";
LOCATE COMP "ddram_dq[14]" SITE "T1";
LOCATE COMP "ddram_dq[15]" SITE "W2";
IOBUF PORT "ddram_dq[0]" IO_TYPE=SSTL15_I SLEWRATE=FAST TERMINATION=75;
IOBUF PORT "ddram_dq[1]" IO_TYPE=SSTL15_I SLEWRATE=FAST TERMINATION=75;
IOBUF PORT "ddram_dq[2]" IO_TYPE=SSTL15_I SLEWRATE=FAST TERMINATION=75;
IOBUF PORT "ddram_dq[3]" IO_TYPE=SSTL15_I SLEWRATE=FAST TERMINATION=75;
IOBUF PORT "ddram_dq[4]" IO_TYPE=SSTL15_I SLEWRATE=FAST TERMINATION=75;
IOBUF PORT "ddram_dq[5]" IO_TYPE=SSTL15_I SLEWRATE=FAST TERMINATION=75;
IOBUF PORT "ddram_dq[6]" IO_TYPE=SSTL15_I SLEWRATE=FAST TERMINATION=75;
IOBUF PORT "ddram_dq[7]" IO_TYPE=SSTL15_I SLEWRATE=FAST TERMINATION=75;
IOBUF PORT "ddram_dq[8]" IO_TYPE=SSTL15_I SLEWRATE=FAST TERMINATION=75;
IOBUF PORT "ddram_dq[9]" IO_TYPE=SSTL15_I SLEWRATE=FAST TERMINATION=75;
IOBUF PORT "ddram_dq[10]" IO_TYPE=SSTL15_I SLEWRATE=FAST TERMINATION=75;
IOBUF PORT "ddram_dq[11]" IO_TYPE=SSTL15_I SLEWRATE=FAST TERMINATION=75;
IOBUF PORT "ddram_dq[12]" IO_TYPE=SSTL15_I SLEWRATE=FAST TERMINATION=75;
IOBUF PORT "ddram_dq[13]" IO_TYPE=SSTL15_I SLEWRATE=FAST TERMINATION=75;
IOBUF PORT "ddram_dq[14]" IO_TYPE=SSTL15_I SLEWRATE=FAST TERMINATION=75;
IOBUF PORT "ddram_dq[15]" IO_TYPE=SSTL15_I SLEWRATE=FAST TERMINATION=75;

LOCATE COMP "ddram_dqs_n[0]" SITE "U5";
LOCATE COMP "ddram_dqs_n[1]" SITE "U2";
LOCATE COMP "ddram_dqs_p[0]" SITE "V4";
LOCATE COMP "ddram_dqs_p[1]" SITE "V1";
IOBUF PORT "ddram_dqs_n[0]" IO_TYPE=SSTL15D_I SLEWRATE=FAST DIFFRESISTOR=100 TERMINATION=OFF;
IOBUF PORT "ddram_dqs_n[1]" IO_TYPE=SSTL15D_I SLEWRATE=FAST DIFFRESISTOR=100 TERMINATION=OFF;
IOBUF PORT "ddram_dqs_p[0]" IO_TYPE=SSTL15D_I SLEWRATE=FAST DIFFRESISTOR=100 TERMINATION=OFF;
IOBUF PORT "ddram_dqs_p[1]" IO_TYPE=SSTL15D_I SLEWRATE=FAST DIFFRESISTOR=100 TERMINATION=OFF;

LOCATE COMP "ddram_clk_p" SITE "H3";
LOCATE COMP "ddram_clk_n" SITE "J3";
IOBUF PORT "ddram_clk_p" IO_TYPE=SSTL15D_I SLEWRATE=FAST;
IOBUF PORT "ddram_clk_n" IO_TYPE=SSTL15D_I SLEWRATE=FAST;

LOCATE COMP "ddram_cke" SITE "P1";
LOCATE COMP "ddram_odt" SITE "P3";
IOBUF PORT "ddram_cke" IO_TYPE=SSTL15_I SLEWRATE=FAST;
IOBUF PORT "ddram_odt" IO_TYPE=SSTL15_I SLEWRATE=FAST;

// PMOD signals
LOCATE COMP "pmod0_0" SITE "T25";
IOBUF PORT "pmod0_0" IO_TYPE=LVCMOS33;
LOCATE COMP "pmod0_1" SITE "U25";
IOBUF PORT "pmod0_1" IO_TYPE=LVCMOS33;
LOCATE COMP "pmod0_2" SITE "U24";
IOBUF PORT "pmod0_2" IO_TYPE=LVCMOS33;
LOCATE COMP "pmod0_3" SITE "V24";
IOBUF PORT "pmod0_3" IO_TYPE=LVCMOS33;
LOCATE COMP "pmod0_4" SITE "T26";
IOBUF PORT "pmod0_4" IO_TYPE=LVCMOS33;
LOCATE COMP "pmod0_5" SITE "U26";
IOBUF PORT "pmod0_5" IO_TYPE=LVCMOS33;
LOCATE COMP "pmod0_6" SITE "V26";
IOBUF PORT "pmod0_6" IO_TYPE=LVCMOS33;
LOCATE COMP "pmod0_7" SITE "W26";
IOBUF PORT "pmod0_7" IO_TYPE=LVCMOS33;

LOCATE COMP "pmod1_0" SITE "U23";
IOBUF PORT "pmod1_0" IO_TYPE=LVCMOS33;
LOCATE COMP "pmod1_1" SITE "V23";
IOBUF PORT "pmod1_1" IO_TYPE=LVCMOS33;
LOCATE COMP "pmod1_2" SITE "U22";
IOBUF PORT "pmod1_2" IO_TYPE=LVCMOS33;
LOCATE COMP "pmod1_3" SITE "V21";
IOBUF PORT "pmod1_3" IO_TYPE=LVCMOS33;
LOCATE COMP "pmod1_4" SITE "W25";
IOBUF PORT "pmod1_4" IO_TYPE=LVCMOS33;
LOCATE COMP "pmod1_5" SITE "W24";
IOBUF PORT "pmod1_5" IO_TYPE=LVCMOS33;
LOCATE COMP "pmod1_6" SITE "W23";
IOBUF PORT "pmod1_6" IO_TYPE=LVCMOS33;
LOCATE COMP "pmod1_7" SITE "W22";
IOBUF PORT "pmod1_7" IO_TYPE=LVCMOS33;

LOCATE COMP "pmod2_0" SITE "J24";
IOBUF PORT "pmod2_0" IO_TYPE=LVCMOS33;
LOCATE COMP "pmod2_1" SITE "H22";
IOBUF PORT "pmod2_1" IO_TYPE=LVCMOS33;
LOCATE COMP "pmod2_2" SITE "E21";
IOBUF PORT "pmod2_2" IO_TYPE=LVCMOS33;
LOCATE COMP "pmod2_3" SITE "D18";
IOBUF PORT "pmod2_3" IO_TYPE=LVCMOS33;
LOCATE COMP "pmod2_4" SITE "K22";
IOBUF PORT "pmod2_4" IO_TYPE=LVCMOS33;
LOCATE COMP "pmod2_5" SITE "J21";
IOBUF PORT "pmod2_5" IO_TYPE=LVCMOS33;
LOCATE COMP "pmod2_6" SITE "H21";
IOBUF PORT "pmod2_6" IO_TYPE=LVCMOS33;
LOCATE COMP "pmod2_7" SITE "D22";
IOBUF PORT "pmod2_7" IO_TYPE=LVCMOS33;

LOCATE COMP "pmod3_0" SITE "E4";
IOBUF PORT "pmod3_0" IO_TYPE=LVCMOS33;
LOCATE COMP "pmod3_1" SITE "F4";
IOBUF PORT "pmod3_1" IO_TYPE=LVCMOS33;
LOCATE COMP "pmod3_2" SITE "E6";
IOBUF PORT "pmod3_2" IO_TYPE=LVCMOS33;
LOCATE COMP "pmod3_3" SITE "H4";
IOBUF PORT "pmod3_3" IO_TYPE=LVCMOS33;
LOCATE COMP "pmod3_4" SITE "F3";
IOBUF PORT "pmod3_4" IO_TYPE=LVCMOS33;
LOCATE COMP "pmod3_5" SITE "D4";
IOBUF PORT "pmod3_5" IO_TYPE=LVCMOS33;
LOCATE COMP "pmod3_6" SITE "D5";
IOBUF PORT "pmod3_6" IO_TYPE=LVCMOS33;
LOCATE COMP "pmod3_7" SITE "F5";
IOBUF PORT "pmod3_7" IO_TYPE=LVCMOS33;

LOCATE COMP "pmod4_0" SITE "E26";
IOBUF PORT "pmod4_0" IO_TYPE=LVCMOS33;
LOCATE COMP "pmod4_1" SITE "D25";
IOBUF PORT "pmod4_1" IO_TYPE=LVCMOS33;
LOCATE COMP "pmod4_2" SITE "F26";
IOBUF PORT "pmod4_2" IO_TYPE=LVCMOS33;
LOCATE COMP "pmod4_3" SITE "F25";
IOBUF PORT "pmod4_3" IO_TYPE=LVCMOS33;
LOCATE COMP "pmod4_4" SITE "C26";
IOBUF PORT "pmod4_4" IO_TYPE=LVCMOS33;
LOCATE COMP "pmod4_5" SITE "C25";
IOBUF PORT "pmod4_5" IO_TYPE=LVCMOS33;
LOCATE COMP "pmod4_6" SITE "A25";
IOBUF PORT "pmod4_6" IO_TYPE=LVCMOS33;
LOCATE COMP "pmod4_7" SITE "A24";
IOBUF PORT "pmod4_7" IO_TYPE=LVCMOS33;

LOCATE COMP "pmod5_0" SITE "D19";
IOBUF PORT "pmod5_0" IO_TYPE=LVCMOS33;
LOCATE COMP "pmod5_1" SITE "C21";
IOBUF PORT "pmod5_1" IO_TYPE=LVCMOS33;
LOCATE COMP "pmod5_2" SITE "B21";
IOBUF PORT "pmod5_2" IO_TYPE=LVCMOS33;
LOCATE COMP "pmod5_3" SITE "C22";
IOBUF PORT "pmod5_3" IO_TYPE=LVCMOS33;
LOCATE COMP "pmod5_4" SITE "D21";
IOBUF PORT "pmod5_4" IO_TYPE=LVCMOS33;
LOCATE COMP "pmod5_5" SITE "A21";
IOBUF PORT "pmod5_5" IO_TYPE=LVCMOS33;
LOCATE COMP "pmod5_6" SITE "A22";
IOBUF PORT "pmod5_6" IO_TYPE=LVCMOS33;
LOCATE COMP "pmod5_7" SITE "A23";
IOBUF PORT "pmod5_7" IO_TYPE=LVCMOS33;

LOCATE COMP "pmod6_0" SITE "C16";
IOBUF PORT "pmod6_0" IO_TYPE=LVCMOS33;
LOCATE COMP "pmod6_1" SITE "B17";
IOBUF PORT "pmod6_1" IO_TYPE=LVCMOS33;
LOCATE COMP "pmod6_2" SITE "C18";
IOBUF PORT "pmod6_2" IO_TYPE=LVCMOS33;
LOCATE COMP "pmod6_3" SITE "B19";
IOBUF PORT "pmod6_3" IO_TYPE=LVCMOS33;
LOCATE COMP "pmod6_4" SITE "A17";
IOBUF PORT "pmod6_4" IO_TYPE=LVCMOS33;
LOCATE COMP "pmod6_5" SITE "A18";
IOBUF PORT "pmod6_5" IO_TYPE=LVCMOS33;
LOCATE COMP "pmod6_6" SITE "A19";
IOBUF PORT "pmod6_6" IO_TYPE=LVCMOS33;
LOCATE COMP "pmod6_7" SITE "C19";
IOBUF PORT "pmod6_7" IO_TYPE=LVCMOS33;

LOCATE COMP "pmod7_0" SITE "D14";
IOBUF PORT "pmod7_0" IO_TYPE=LVCMOS33;
LOCATE COMP "pmod7_1" SITE "B14";
IOBUF PORT "pmod7_1" IO_TYPE=LVCMOS33;
LOCATE COMP "pmod7_2" SITE "E14";
IOBUF PORT "pmod7_2" IO_TYPE=LVCMOS33;
LOCATE COMP "pmod7_3" SITE "B16";
IOBUF PORT "pmod7_3" IO_TYPE=LVCMOS33;
LOCATE COMP "pmod7_4" SITE "C14";
IOBUF PORT "pmod7_4" IO_TYPE=LVCMOS33;
LOCATE COMP "pmod7_5" SITE "A14";
IOBUF PORT "pmod7_5" IO_TYPE=LVCMOS33;
LOCATE COMP "pmod7_6" SITE "A15";
IOBUF PORT "pmod7_6" IO_TYPE=LVCMOS33;
LOCATE COMP "pmod7_7" SITE "A16";
IOBUF PORT "pmod7_7" IO_TYPE=LVCMOS33;

48
fpga/top-arty.vhdl
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@ -488,18 +488,18 @@ begin
component liteeth_core port ( component liteeth_core port (
sys_clock : in std_ulogic; sys_clock : in std_ulogic;
sys_reset : in std_ulogic; sys_reset : in std_ulogic;
mii_eth_clocks_tx : in std_ulogic; mii_clocks_tx : in std_ulogic;
mii_eth_clocks_rx : in std_ulogic; mii_clocks_rx : in std_ulogic;
mii_eth_rst_n : out std_ulogic; mii_rst_n : out std_ulogic;
mii_eth_mdio : in std_ulogic; mii_mdio : in std_ulogic;
mii_eth_mdc : out std_ulogic; mii_mdc : out std_ulogic;
mii_eth_rx_dv : in std_ulogic; mii_rx_dv : in std_ulogic;
mii_eth_rx_er : in std_ulogic; mii_rx_er : in std_ulogic;
mii_eth_rx_data : in std_ulogic_vector(3 downto 0); mii_rx_data : in std_ulogic_vector(3 downto 0);
mii_eth_tx_en : out std_ulogic; mii_tx_en : out std_ulogic;
mii_eth_tx_data : out std_ulogic_vector(3 downto 0); mii_tx_data : out std_ulogic_vector(3 downto 0);
mii_eth_col : in std_ulogic; mii_col : in std_ulogic;
mii_eth_crs : in std_ulogic; mii_crs : in std_ulogic;
wishbone_adr : in std_ulogic_vector(29 downto 0); wishbone_adr : in std_ulogic_vector(29 downto 0);
wishbone_dat_w : in std_ulogic_vector(31 downto 0); wishbone_dat_w : in std_ulogic_vector(31 downto 0);
wishbone_dat_r : out std_ulogic_vector(31 downto 0); wishbone_dat_r : out std_ulogic_vector(31 downto 0);
@ -573,18 +573,18 @@ begin
port map( port map(
sys_clock => system_clk, sys_clock => system_clk,
sys_reset => periph_rst, sys_reset => periph_rst,
mii_eth_clocks_tx => eth_clocks_tx, mii_clocks_tx => eth_clocks_tx,
mii_eth_clocks_rx => eth_clocks_rx, mii_clocks_rx => eth_clocks_rx,
mii_eth_rst_n => eth_rst_n, mii_rst_n => eth_rst_n,
mii_eth_mdio => eth_mdio, mii_mdio => eth_mdio,
mii_eth_mdc => eth_mdc, mii_mdc => eth_mdc,
mii_eth_rx_dv => eth_rx_dv, mii_rx_dv => eth_rx_dv,
mii_eth_rx_er => eth_rx_er, mii_rx_er => eth_rx_er,
mii_eth_rx_data => eth_rx_data, mii_rx_data => eth_rx_data,
mii_eth_tx_en => eth_tx_en, mii_tx_en => eth_tx_en,
mii_eth_tx_data => eth_tx_data, mii_tx_data => eth_tx_data,
mii_eth_col => eth_col, mii_col => eth_col,
mii_eth_crs => eth_crs, mii_crs => eth_crs,
wishbone_adr => wb_eth_adr, wishbone_adr => wb_eth_adr,
wishbone_dat_w => wb_ext_io_in.dat, wishbone_dat_w => wb_ext_io_in.dat,
wishbone_dat_r => wb_eth_out.dat, wishbone_dat_r => wb_eth_out.dat,

652
fpga/top-ecpix5.vhdl
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@ -0,0 +1,652 @@
library ieee;
use ieee.std_logic_1164.all;
use ieee.numeric_std.all;

library work;
use work.wishbone_types.all;

entity toplevel is
generic (
MEMORY_SIZE : integer := 16384;
RAM_INIT_FILE : string := "firmware.hex";
RESET_LOW : boolean := true;
CLK_INPUT : positive := 100000000;
CLK_FREQUENCY : positive := 50000000;
HAS_FPU : boolean := true;
HAS_BTC : boolean := true;
USE_LITEDRAM : boolean := true;
NO_BRAM : boolean := true;
SCLK_STARTUPE2 : boolean := false;
SPI_FLASH_OFFSET : integer := 4194304;
SPI_FLASH_DEF_CKDV : natural := 0;
SPI_FLASH_DEF_QUAD : boolean := true;
LOG_LENGTH : natural := 0;
UART_IS_16550 : boolean := true;
HAS_UART1 : boolean := false;
USE_LITEETH : boolean := true;
USE_LITESDCARD : boolean := true;
ICACHE_NUM_LINES : natural := 64;
NGPIO : natural := 0
);
port(
ext_clk : in std_ulogic;
ext_rst_n : in std_ulogic;
gsrn : in std_ulogic;

-- UART0 signals:
uart0_txd : out std_ulogic;
uart0_rxd : in std_ulogic;

-- LEDs
led5_r_n : out std_ulogic;
led5_g_n : out std_ulogic;
led5_b_n : out std_ulogic;
led6_r_n : out std_ulogic;
led6_g_n : out std_ulogic;
led6_b_n : out std_ulogic;
led7_r_n : out std_ulogic;
led7_g_n : out std_ulogic;
led7_b_n : out std_ulogic;
led8_r_n : out std_ulogic;
led8_g_n : out std_ulogic;
led8_b_n : out std_ulogic;

-- SPI
spi_flash_cs_n : out std_ulogic;
spi_flash_mosi : inout std_ulogic;
spi_flash_miso : inout std_ulogic;
spi_flash_wp_n : inout std_ulogic;
spi_flash_hold_n : inout std_ulogic;

-- Ethernet
rgmii_clocks_rx : in std_ulogic;
rgmii_clocks_tx : out std_ulogic;
rgmii_rst_n : out std_ulogic;
rgmii_int_n : in std_ulogic;
rgmii_mdc : out std_ulogic;
rgmii_mdio : inout std_ulogic;
rgmii_rx_ctl : in std_ulogic;
rgmii_rx_data : in std_ulogic_vector(3 downto 0);
rgmii_tx_ctl : out std_ulogic;
rgmii_tx_data : out std_ulogic_vector(3 downto 0);

-- SD card wires
sdcard_data : inout std_ulogic_vector(3 downto 0);
sdcard_cmd : inout std_ulogic;
sdcard_clk : out std_ulogic;
sdcard_cd : in std_ulogic;
sdcard_cmd_dir : out std_ulogic;
sdcard_dat0_dir : out std_ulogic;
sdcard_dat13_dir : out std_ulogic;
sdcard_vsel : out std_ulogic;

-- PMOD ports 0 - 7
pmod0_0 : inout std_ulogic;
pmod0_1 : inout std_ulogic;
pmod0_2 : inout std_ulogic;
pmod0_3 : inout std_ulogic;
pmod0_4 : inout std_ulogic;
pmod0_5 : inout std_ulogic;
pmod0_6 : inout std_ulogic;
pmod0_7 : inout std_ulogic;
pmod1_0 : inout std_ulogic;
pmod1_1 : inout std_ulogic;
pmod1_2 : inout std_ulogic;
pmod1_3 : inout std_ulogic;
pmod1_4 : inout std_ulogic;
pmod1_5 : inout std_ulogic;
pmod1_6 : inout std_ulogic;
pmod1_7 : inout std_ulogic;
pmod2_0 : inout std_ulogic;
pmod2_1 : inout std_ulogic;
pmod2_2 : inout std_ulogic;
pmod2_3 : inout std_ulogic;
pmod2_4 : inout std_ulogic;
pmod2_5 : inout std_ulogic;
pmod2_6 : inout std_ulogic;
pmod2_7 : inout std_ulogic;
pmod3_0 : inout std_ulogic;
pmod3_1 : inout std_ulogic;
pmod3_2 : inout std_ulogic;
pmod3_3 : inout std_ulogic;
pmod3_4 : inout std_ulogic;
pmod3_5 : inout std_ulogic;
pmod3_6 : inout std_ulogic;
pmod3_7 : inout std_ulogic;
pmod4_0 : inout std_ulogic; -- 0n
pmod4_1 : inout std_ulogic; -- 0p
pmod4_2 : inout std_ulogic; -- 1n
pmod4_3 : inout std_ulogic; -- 1p
pmod4_4 : inout std_ulogic; -- 2n
pmod4_5 : inout std_ulogic; -- 2p
pmod4_6 : inout std_ulogic; -- 3n
pmod4_7 : inout std_ulogic; -- 3p
pmod5_0 : inout std_ulogic;
pmod5_1 : inout std_ulogic;
pmod5_2 : inout std_ulogic;
pmod5_3 : inout std_ulogic;
pmod5_4 : inout std_ulogic;
pmod5_5 : inout std_ulogic;
pmod5_6 : inout std_ulogic;
pmod5_7 : inout std_ulogic;
pmod6_0 : inout std_ulogic;
pmod6_1 : inout std_ulogic;
pmod6_2 : inout std_ulogic;
pmod6_3 : inout std_ulogic;
pmod6_4 : inout std_ulogic;
pmod6_5 : inout std_ulogic;
pmod6_6 : inout std_ulogic;
pmod6_7 : inout std_ulogic;
pmod7_0 : inout std_ulogic;
pmod7_1 : inout std_ulogic;
pmod7_2 : inout std_ulogic;
pmod7_3 : inout std_ulogic;
pmod7_4 : inout std_ulogic;
pmod7_5 : inout std_ulogic;
pmod7_6 : inout std_ulogic;
pmod7_7 : inout std_ulogic;

-- DRAM wires
ddram_a : out std_ulogic_vector(14 downto 0);
ddram_ba : out std_ulogic_vector(2 downto 0);
ddram_ras_n : out std_ulogic;
ddram_cas_n : out std_ulogic;
ddram_we_n : out std_ulogic;
ddram_dm : out std_ulogic_vector(1 downto 0);
ddram_dq : inout std_ulogic_vector(15 downto 0);
ddram_dqs_p : inout std_ulogic_vector(1 downto 0);
ddram_clk_p : out std_ulogic_vector(0 downto 0);
-- only the positive differential pin is instantiated
--ddram_dqs_n : inout std_ulogic_vector(1 downto 0);
--ddram_clk_n : out std_ulogic_vector(0 downto 0);
ddram_cke : out std_ulogic;
ddram_odt : out std_ulogic
);
end entity toplevel;

architecture behaviour of toplevel is

-- Reset signals:
signal soc_rst : std_ulogic;
signal pll_rst : std_ulogic;

-- Internal clock signals:
signal system_clk : std_ulogic;
signal system_clk_locked : std_ulogic;

-- External IOs from the SoC
signal wb_ext_io_in : wb_io_master_out;
signal wb_ext_io_out : wb_io_slave_out;
signal wb_ext_is_dram_csr : std_ulogic;
signal wb_ext_is_dram_init : std_ulogic;
signal wb_ext_is_eth : std_ulogic;
signal wb_ext_is_sdcard : std_ulogic;

-- DRAM main data wishbone connection
signal wb_dram_in : wishbone_master_out;
signal wb_dram_out : wishbone_slave_out;

-- DRAM control wishbone connection
signal wb_dram_ctrl_out : wb_io_slave_out := wb_io_slave_out_init;

-- LiteEth connection
signal ext_irq_eth : std_ulogic;
signal wb_eth_out : wb_io_slave_out := wb_io_slave_out_init;

-- LiteSDCard connection
signal ext_irq_sdcard : std_ulogic := '0';
signal wb_sdcard_out : wb_io_slave_out := wb_io_slave_out_init;
signal wb_sddma_out : wb_io_master_out := wb_io_master_out_init;
signal wb_sddma_in : wb_io_slave_out;
signal wb_sddma_nr : wb_io_master_out;
signal wb_sddma_ir : wb_io_slave_out;
-- for conversion from non-pipelined wishbone to pipelined
signal wb_sddma_stb_sent : std_ulogic;

-- SPI flash
signal spi_sck : std_ulogic;
signal spi_sck_ts : std_ulogic;
signal spi_cs_n : std_ulogic;
signal spi_sdat_o : std_ulogic_vector(3 downto 0);
signal spi_sdat_oe : std_ulogic_vector(3 downto 0);
signal spi_sdat_i : std_ulogic_vector(3 downto 0);

-- Fixup various memory sizes based on generics
function get_bram_size return natural is
begin
if USE_LITEDRAM and NO_BRAM then
return 0;
else
return MEMORY_SIZE;
end if;
end function;

function get_payload_size return natural is
begin
if USE_LITEDRAM and NO_BRAM then
return MEMORY_SIZE;
else
return 0;
end if;
end function;

constant BRAM_SIZE : natural := get_bram_size;
constant PAYLOAD_SIZE : natural := get_payload_size;

COMPONENT USRMCLK
PORT(
USRMCLKI : IN STD_ULOGIC;
USRMCLKTS : IN STD_ULOGIC
);
END COMPONENT;
attribute syn_noprune: boolean ;
attribute syn_noprune of USRMCLK: component is true;

begin

-- Main SoC
soc0: entity work.soc
generic map(
MEMORY_SIZE => BRAM_SIZE,
RAM_INIT_FILE => RAM_INIT_FILE,
SIM => false,
CLK_FREQ => CLK_FREQUENCY,
HAS_FPU => HAS_FPU,
HAS_BTC => HAS_BTC,
HAS_DRAM => USE_LITEDRAM,
DRAM_SIZE => 512 * 1024 * 1024,
DRAM_INIT_SIZE => PAYLOAD_SIZE,
HAS_SPI_FLASH => true,
SPI_FLASH_DLINES => 4,
SPI_FLASH_OFFSET => SPI_FLASH_OFFSET,
SPI_FLASH_DEF_CKDV => SPI_FLASH_DEF_CKDV,
SPI_FLASH_DEF_QUAD => SPI_FLASH_DEF_QUAD,
LOG_LENGTH => LOG_LENGTH,
UART0_IS_16550 => UART_IS_16550,
HAS_UART1 => HAS_UART1,
HAS_LITEETH => USE_LITEETH,
HAS_SD_CARD => USE_LITESDCARD,
ICACHE_NUM_LINES => ICACHE_NUM_LINES,
NGPIO => NGPIO
)
port map (
-- System signals
system_clk => system_clk,
rst => soc_rst,

-- UART signals
uart0_txd => uart0_txd,
uart0_rxd => uart0_rxd,

-- SPI signals
spi_flash_sck => spi_sck,
spi_flash_cs_n => spi_cs_n,
spi_flash_sdat_o => spi_sdat_o,
spi_flash_sdat_oe => spi_sdat_oe,
spi_flash_sdat_i => spi_sdat_i,

-- External interrupts
ext_irq_eth => ext_irq_eth,
ext_irq_sdcard => ext_irq_sdcard,

-- DRAM wishbone
wb_dram_in => wb_dram_in,
wb_dram_out => wb_dram_out,

-- IO wishbone
wb_ext_io_in => wb_ext_io_in,
wb_ext_io_out => wb_ext_io_out,
wb_ext_is_dram_csr => wb_ext_is_dram_csr,
wb_ext_is_dram_init => wb_ext_is_dram_init,
wb_ext_is_eth => wb_ext_is_eth,
wb_ext_is_sdcard => wb_ext_is_sdcard,

-- DMA wishbone
wishbone_dma_in => wb_sddma_in,
wishbone_dma_out => wb_sddma_out
);

-- SPI Flash
--
spi_flash_cs_n <= spi_cs_n;
spi_flash_mosi <= spi_sdat_o(0) when spi_sdat_oe(0) = '1' else 'Z';
spi_flash_miso <= spi_sdat_o(1) when spi_sdat_oe(1) = '1' else 'Z';
spi_flash_wp_n <= spi_sdat_o(2) when spi_sdat_oe(2) = '1' else 'Z';
spi_flash_hold_n <= spi_sdat_o(3) when spi_sdat_oe(3) = '1' else 'Z';
spi_sdat_i(0) <= spi_flash_mosi;
spi_sdat_i(1) <= spi_flash_miso;
spi_sdat_i(2) <= spi_flash_wp_n;
spi_sdat_i(3) <= spi_flash_hold_n;
spi_sck_ts <= '0';

uclk: USRMCLK port map (
USRMCLKI => spi_sck,
USRMCLKTS => spi_sck_ts
);

nodram: if not USE_LITEDRAM generate
signal div2 : std_ulogic := '0';
begin
reset_controller: entity work.soc_reset
generic map(
RESET_LOW => RESET_LOW
)
port map(
ext_clk => ext_clk,
pll_clk => system_clk,
pll_locked_in => system_clk_locked,
ext_rst_in => ext_rst_n and gsrn,
pll_rst_out => pll_rst,
rst_out => soc_rst
);

process(ext_clk)
begin
if rising_edge(ext_clk) then
div2 <= not div2;
end if;
end process;
system_clk <= div2;
system_clk_locked <= '1';

led8_r_n <= '1';
led8_g_n <= '1';
led8_b_n <= '1';

end generate;

has_dram: if USE_LITEDRAM generate
signal dram_init_done : std_ulogic;
signal dram_init_error : std_ulogic;
signal dram_sys_rst : std_ulogic;
begin

-- Eventually dig out the frequency from
-- litesdram generate.py sys_clk_freq
-- but for now, assert it's 50Mhz for ECPIX-5
assert CLK_FREQUENCY = 50000000;

reset_controller: entity work.soc_reset
generic map(
RESET_LOW => RESET_LOW,
PLL_RESET_BITS => 18,
SOC_RESET_BITS => 20
)
port map(
ext_clk => ext_clk,
pll_clk => system_clk,
pll_locked_in => system_clk_locked and not dram_sys_rst,
ext_rst_in => ext_rst_n and gsrn,
pll_rst_out => pll_rst,
rst_out => soc_rst
);

-- Generate SoC reset
soc_rst_gen: process(system_clk)
begin
if ext_rst_n = '0' then
soc_rst <= '1';
elsif rising_edge(system_clk) then
soc_rst <= dram_sys_rst or not system_clk_locked;
end if;
end process;

dram: entity work.litedram_wrapper
generic map(
DRAM_ABITS => 25,
DRAM_ALINES => 15,
DRAM_DLINES => 16,
DRAM_CKLINES => 1,
DRAM_PORT_WIDTH => 128,
PAYLOAD_FILE => RAM_INIT_FILE,
PAYLOAD_SIZE => PAYLOAD_SIZE
)
port map(
clk_in => ext_clk,
rst => pll_rst,
system_clk => system_clk,
system_reset => dram_sys_rst,
pll_locked => system_clk_locked,

wb_in => wb_dram_in,
wb_out => wb_dram_out,
wb_ctrl_in => wb_ext_io_in,
wb_ctrl_out => wb_dram_ctrl_out,
wb_ctrl_is_csr => wb_ext_is_dram_csr,
wb_ctrl_is_init => wb_ext_is_dram_init,

init_done => dram_init_done,
init_error => dram_init_error,

ddram_a => ddram_a,
ddram_ba => ddram_ba,
ddram_ras_n => ddram_ras_n,
ddram_cas_n => ddram_cas_n,
ddram_we_n => ddram_we_n,
ddram_dm => ddram_dm,
ddram_dq => ddram_dq,
ddram_dqs_p => ddram_dqs_p,
ddram_clk_p => ddram_clk_p,
-- only the positive differential pin is instantiated
--ddram_dqs_n => ddram_dqs_n,
--ddram_clk_n => ddram_clk_n,
ddram_cke => ddram_cke,
ddram_odt => ddram_odt
);

-- active-low outputs to the LED
led8_b_n <= dram_init_done;
led8_r_n <= not dram_init_error;
led8_g_n <= not (dram_init_done and not dram_init_error);
end generate;

has_liteeth : if USE_LITEETH generate

component liteeth_core port (
sys_clock : in std_ulogic;
sys_reset : in std_ulogic;
rgmii_clocks_tx : out std_ulogic;
rgmii_clocks_rx : in std_ulogic;
rgmii_rst_n : out std_ulogic;
rgmii_int_n : in std_ulogic;
rgmii_mdio : inout std_ulogic;
rgmii_mdc : out std_ulogic;
rgmii_rx_ctl : in std_ulogic;
rgmii_rx_data : in std_ulogic_vector(3 downto 0);
rgmii_tx_ctl : out std_ulogic;
rgmii_tx_data : out std_ulogic_vector(3 downto 0);
wishbone_adr : in std_ulogic_vector(29 downto 0);
wishbone_dat_w : in std_ulogic_vector(31 downto 0);
wishbone_dat_r : out std_ulogic_vector(31 downto 0);
wishbone_sel : in std_ulogic_vector(3 downto 0);
wishbone_cyc : in std_ulogic;
wishbone_stb : in std_ulogic;
wishbone_ack : out std_ulogic;
wishbone_we : in std_ulogic;
wishbone_cti : in std_ulogic_vector(2 downto 0);
wishbone_bte : in std_ulogic_vector(1 downto 0);
wishbone_err : out std_ulogic;
interrupt : out std_ulogic
);
end component;

signal wb_eth_cyc : std_ulogic;
signal wb_eth_adr : std_ulogic_vector(29 downto 0);

begin
liteeth : liteeth_core
port map(
sys_clock => system_clk,
sys_reset => soc_rst,
rgmii_clocks_tx => rgmii_clocks_tx,
rgmii_clocks_rx => rgmii_clocks_rx,
rgmii_rst_n => rgmii_rst_n,
rgmii_int_n => rgmii_int_n,
rgmii_mdio => rgmii_mdio,
rgmii_mdc => rgmii_mdc,
rgmii_rx_ctl => rgmii_rx_ctl,
rgmii_rx_data => rgmii_rx_data,
rgmii_tx_ctl => rgmii_tx_ctl,
rgmii_tx_data => rgmii_tx_data,
wishbone_adr => wb_eth_adr,
wishbone_dat_w => wb_ext_io_in.dat,
wishbone_dat_r => wb_eth_out.dat,
wishbone_sel => wb_ext_io_in.sel,
wishbone_cyc => wb_eth_cyc,
wishbone_stb => wb_ext_io_in.stb,
wishbone_ack => wb_eth_out.ack,
wishbone_we => wb_ext_io_in.we,
wishbone_cti => "000",
wishbone_bte => "00",
wishbone_err => open,
interrupt => ext_irq_eth
);

-- Gate cyc with "chip select" from soc
wb_eth_cyc <= wb_ext_io_in.cyc and wb_ext_is_eth;

-- Remove top address bits as liteeth decoder doesn't know about them
wb_eth_adr <= x"000" & "000" & wb_ext_io_in.adr(14 downto 0);

-- LiteETH isn't pipelined
wb_eth_out.stall <= not wb_eth_out.ack;

end generate;

no_liteeth : if not USE_LITEETH generate
ext_irq_eth <= '0';
end generate;

-- SD card
-- The ECPIX-5 has a buffer/level translator chip in order to be able to
-- support 1.8V signalling to the SD card as well as 3V signalling.
-- Litesdcard doesn't currently support voltage selection, or the higher
-- data transfer rates that require the lower voltage.
has_sdcard : if USE_LITESDCARD generate
component litesdcard_core port (
clk : in std_ulogic;
rst : in std_ulogic;
irq : out std_ulogic;
-- wishbone for accessing control registers
wb_ctrl_adr : in std_ulogic_vector(29 downto 0);
wb_ctrl_dat_w : in std_ulogic_vector(31 downto 0);
wb_ctrl_dat_r : out std_ulogic_vector(31 downto 0);
wb_ctrl_sel : in std_ulogic_vector(3 downto 0);
wb_ctrl_cyc : in std_ulogic;
wb_ctrl_stb : in std_ulogic;
wb_ctrl_ack : out std_ulogic;
wb_ctrl_we : in std_ulogic;
wb_ctrl_cti : in std_ulogic_vector(2 downto 0);
wb_ctrl_bte : in std_ulogic_vector(1 downto 0);
wb_ctrl_err : out std_ulogic;
-- wishbone for SD card core to use for DMA
wb_dma_adr : out std_ulogic_vector(29 downto 0);
wb_dma_dat_w : out std_ulogic_vector(31 downto 0);
wb_dma_dat_r : in std_ulogic_vector(31 downto 0);
wb_dma_sel : out std_ulogic_vector(3 downto 0);
wb_dma_cyc : out std_ulogic;
wb_dma_stb : out std_ulogic;
wb_dma_ack : in std_ulogic;
wb_dma_we : out std_ulogic;
wb_dma_cti : out std_ulogic_vector(2 downto 0);
wb_dma_bte : out std_ulogic_vector(1 downto 0);
wb_dma_err : in std_ulogic;
-- connections to SD card
sdcard_data : inout std_ulogic_vector(3 downto 0);
sdcard_cmd : inout std_ulogic;
sdcard_clk : out std_ulogic;
sdcard_cd : in std_ulogic;
sdcard_cmd_dir : out std_ulogic;
sdcard_dat0_dir : out std_ulogic;
sdcard_dat13_dir : out std_ulogic
);
end component;

signal wb_sdcard_cyc : std_ulogic;
signal wb_sdcard_adr : std_ulogic_vector(29 downto 0);

begin
litesdcard : litesdcard_core
port map (
clk => system_clk,
rst => soc_rst,
irq => ext_irq_sdcard,
wb_ctrl_adr => wb_sdcard_adr,
wb_ctrl_dat_w => wb_ext_io_in.dat,
wb_ctrl_dat_r => wb_sdcard_out.dat,
wb_ctrl_sel => wb_ext_io_in.sel,
wb_ctrl_cyc => wb_sdcard_cyc,
wb_ctrl_stb => wb_ext_io_in.stb,
wb_ctrl_ack => wb_sdcard_out.ack,
wb_ctrl_we => wb_ext_io_in.we,
wb_ctrl_cti => "000",
wb_ctrl_bte => "00",
wb_ctrl_err => open,
wb_dma_adr => wb_sddma_nr.adr,
wb_dma_dat_w => wb_sddma_nr.dat,
wb_dma_dat_r => wb_sddma_ir.dat,
wb_dma_sel => wb_sddma_nr.sel,
wb_dma_cyc => wb_sddma_nr.cyc,
wb_dma_stb => wb_sddma_nr.stb,
wb_dma_ack => wb_sddma_ir.ack,
wb_dma_we => wb_sddma_nr.we,
wb_dma_cti => open,
wb_dma_bte => open,
wb_dma_err => '0',
sdcard_data => sdcard_data,
sdcard_cmd => sdcard_cmd,
sdcard_clk => sdcard_clk,
sdcard_cd => sdcard_cd,
sdcard_cmd_dir => sdcard_cmd_dir,
sdcard_dat0_dir => sdcard_dat0_dir,
sdcard_dat13_dir => sdcard_dat13_dir
);

-- Select 3V signalling
sdcard_vsel <= '0';

-- Gate cyc with chip select from SoC
wb_sdcard_cyc <= wb_ext_io_in.cyc and wb_ext_is_sdcard;

wb_sdcard_adr <= x"0000" & wb_ext_io_in.adr(13 downto 0);

wb_sdcard_out.stall <= not wb_sdcard_out.ack;

-- Convert non-pipelined DMA wishbone to pipelined by suppressing
-- non-acknowledged strobes
process(system_clk)
begin
if rising_edge(system_clk) then
wb_sddma_out <= wb_sddma_nr;
if wb_sddma_stb_sent = '1' or
(wb_sddma_out.stb = '1' and wb_sddma_in.stall = '0') then
wb_sddma_out.stb <= '0';
end if;
if wb_sddma_nr.cyc = '0' or wb_sddma_ir.ack = '1' then
wb_sddma_stb_sent <= '0';
elsif wb_sddma_in.stall = '0' then
wb_sddma_stb_sent <= wb_sddma_nr.stb;
end if;
wb_sddma_ir <= wb_sddma_in;
end if;
end process;

end generate;

-- Mux WB response on the IO bus
wb_ext_io_out <= wb_eth_out when wb_ext_is_eth = '1' else
wb_sdcard_out when wb_ext_is_sdcard = '1' else
wb_dram_ctrl_out;

led5_r_n <= '1';
led5_g_n <= '1';
led5_b_n <= '1';
led6_r_n <= '1';
led6_g_n <= '1';
led6_b_n <= '1';
led7_r_n <= not soc_rst;
led7_g_n <= not system_clk_locked;
led7_b_n <= '1';

end architecture behaviour;

40
fpga/top-nexys-video.vhdl
Unescape Escape View File

@ -384,16 +384,16 @@ begin
component liteeth_core port ( component liteeth_core port (
sys_clock : in std_ulogic; sys_clock : in std_ulogic;
sys_reset : in std_ulogic; sys_reset : in std_ulogic;
rgmii_eth_clocks_tx : out std_ulogic; rgmii_clocks_tx : out std_ulogic;
rgmii_eth_clocks_rx : in std_ulogic; rgmii_clocks_rx : in std_ulogic;
rgmii_eth_rst_n : out std_ulogic; rgmii_rst_n : out std_ulogic;
rgmii_eth_int_n : in std_ulogic; rgmii_int_n : in std_ulogic;
rgmii_eth_mdio : inout std_ulogic; rgmii_mdio : inout std_ulogic;
rgmii_eth_mdc : out std_ulogic; rgmii_mdc : out std_ulogic;
rgmii_eth_rx_ctl : in std_ulogic; rgmii_rx_ctl : in std_ulogic;
rgmii_eth_rx_data : in std_ulogic_vector(3 downto 0); rgmii_rx_data : in std_ulogic_vector(3 downto 0);
rgmii_eth_tx_ctl : out std_ulogic; rgmii_tx_ctl : out std_ulogic;
rgmii_eth_tx_data : out std_ulogic_vector(3 downto 0); rgmii_tx_data : out std_ulogic_vector(3 downto 0);
wishbone_adr : in std_ulogic_vector(29 downto 0); wishbone_adr : in std_ulogic_vector(29 downto 0);
wishbone_dat_w : in std_ulogic_vector(31 downto 0); wishbone_dat_w : in std_ulogic_vector(31 downto 0);
wishbone_dat_r : out std_ulogic_vector(31 downto 0); wishbone_dat_r : out std_ulogic_vector(31 downto 0);
@ -417,16 +417,16 @@ begin
port map( port map(
sys_clock => system_clk, sys_clock => system_clk,
sys_reset => soc_rst, sys_reset => soc_rst,
rgmii_eth_clocks_tx => eth_clocks_tx, rgmii_clocks_tx => eth_clocks_tx,
rgmii_eth_clocks_rx => eth_clocks_rx, rgmii_clocks_rx => eth_clocks_rx,
rgmii_eth_rst_n => eth_rst_n, rgmii_rst_n => eth_rst_n,
rgmii_eth_int_n => eth_int_n, rgmii_int_n => eth_int_n,
rgmii_eth_mdio => eth_mdio, rgmii_mdio => eth_mdio,
rgmii_eth_mdc => eth_mdc, rgmii_mdc => eth_mdc,
rgmii_eth_rx_ctl => eth_rx_ctl, rgmii_rx_ctl => eth_rx_ctl,
rgmii_eth_rx_data => eth_rx_data, rgmii_rx_data => eth_rx_data,
rgmii_eth_tx_ctl => eth_tx_ctl, rgmii_tx_ctl => eth_tx_ctl,
rgmii_eth_tx_data => eth_tx_data, rgmii_tx_data => eth_tx_data,
wishbone_adr => wb_eth_adr, wishbone_adr => wb_eth_adr,
wishbone_dat_w => wb_ext_io_in.dat, wishbone_dat_w => wb_ext_io_in.dat,
wishbone_dat_r => wb_eth_out.dat, wishbone_dat_r => wb_eth_out.dat,

56
fpga/top-wukong-v2.vhdl
Unescape Escape View File

@ -380,20 +380,20 @@ begin
component liteeth_core port ( component liteeth_core port (
sys_clock : in std_ulogic; sys_clock : in std_ulogic;
sys_reset : in std_ulogic; sys_reset : in std_ulogic;
gmii_eth_clocks_tx : in std_ulogic; gmii_clocks_tx : in std_ulogic;
gmii_eth_clocks_gtx : out std_ulogic; gmii_clocks_gtx : out std_ulogic;
gmii_eth_clocks_rx : in std_ulogic; gmii_clocks_rx : in std_ulogic;
gmii_eth_rst_n : out std_ulogic; gmii_rst_n : out std_ulogic;
gmii_eth_mdio : inout std_ulogic; gmii_mdio : inout std_ulogic;
gmii_eth_mdc : out std_ulogic; gmii_mdc : out std_ulogic;
gmii_eth_rx_dv : in std_ulogic; gmii_rx_dv : in std_ulogic;
gmii_eth_rx_er : in std_ulogic; gmii_rx_er : in std_ulogic;
gmii_eth_rx_data : in std_ulogic_vector(7 downto 0); gmii_rx_data : in std_ulogic_vector(7 downto 0);
gmii_eth_tx_en : out std_ulogic; gmii_tx_en : out std_ulogic;
gmii_eth_tx_er : out std_ulogic; gmii_tx_er : out std_ulogic;
gmii_eth_tx_data : out std_ulogic_vector(7 downto 0); gmii_tx_data : out std_ulogic_vector(7 downto 0);
gmii_eth_col : in std_ulogic; gmii_col : in std_ulogic;
gmii_eth_crs : in std_ulogic; gmii_crs : in std_ulogic;
wishbone_adr : in std_ulogic_vector(29 downto 0); wishbone_adr : in std_ulogic_vector(29 downto 0);
wishbone_dat_w : in std_ulogic_vector(31 downto 0); wishbone_dat_w : in std_ulogic_vector(31 downto 0);
wishbone_dat_r : out std_ulogic_vector(31 downto 0); wishbone_dat_r : out std_ulogic_vector(31 downto 0);
@ -420,20 +420,20 @@ begin
port map( port map(
sys_clock => system_clk, sys_clock => system_clk,
sys_reset => soc_rst, sys_reset => soc_rst,
gmii_eth_clocks_tx => eth_clocks_tx, gmii_clocks_tx => eth_clocks_tx,
gmii_eth_clocks_gtx => eth_clocks_gtx, gmii_clocks_gtx => eth_clocks_gtx,
gmii_eth_clocks_rx => eth_clocks_rx, gmii_clocks_rx => eth_clocks_rx,
gmii_eth_rst_n => eth_rst_n, gmii_rst_n => eth_rst_n,
gmii_eth_mdio => eth_mdio, gmii_mdio => eth_mdio,
gmii_eth_mdc => eth_mdc, gmii_mdc => eth_mdc,
gmii_eth_rx_dv => eth_rx_dv, gmii_rx_dv => eth_rx_dv,
gmii_eth_rx_er => eth_rx_er, gmii_rx_er => eth_rx_er,
gmii_eth_rx_data => eth_rx_data, gmii_rx_data => eth_rx_data,
gmii_eth_tx_en => eth_tx_en, gmii_tx_en => eth_tx_en,
gmii_eth_tx_er => eth_tx_er, gmii_tx_er => eth_tx_er,
gmii_eth_tx_data => eth_tx_data, gmii_tx_data => eth_tx_data,
gmii_eth_col => eth_col, gmii_col => eth_col,
gmii_eth_crs => eth_crs, gmii_crs => eth_crs,
wishbone_adr => wb_eth_adr, wishbone_adr => wb_eth_adr,
wishbone_dat_w => wb_ext_io_in.dat, wishbone_dat_w => wb_ext_io_in.dat,
wishbone_dat_r => wb_eth_out.dat, wishbone_dat_r => wb_eth_out.dat,

34
litedram/gen-src/ecpix-5.yml
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@ -0,0 +1,34 @@
# Based on orangecrab-85-0.2.yml and arty.yml

{
"cpu": "None", # CPU type (ex vexriscv, serv, None)
"device": "LFE5UM5G-85F-8BG554I",
"memtype": "DDR3", # DRAM type

"cmd_latency": 0,
"sdram_module": "MT41K256M16", # SDRAM modules of the board or SO-DIMM
"sdram_module_nb": 2, # Number of byte groups
"sdram_rank_nb": 1, # Number of ranks
"sdram_phy": "ECP5DDRPHY", # Type of FPGA PHY

# Electrical ---------------------------------------------------------------
"rtt_nom": "60ohm", # Nominal termination. (Default)
"rtt_wr": "60ohm", # Write termination. (Default)
"ron": "34ohm", # Output driver impedance. (Default)

# Frequency ----------------------------------------------------------------
"input_clk_freq": 100e6, # Input clock frequency
"sys_clk_freq": 50e6, # System clock frequency (DDR_clk = 4 x sys_clk)
"init_clk_freq": 50e6, # ?

# Core ---------------------------------------------------------------------
"cmd_buffer_depth": 16, # Depth of the command buffer

# User Ports ---------------------------------------------------------------
"user_ports": {
"native_0": {
"type": "native",
"block_until_ready": False,
},
},
}

3
litedram/gen-src/generate.py
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@ -100,7 +100,8 @@ def generate_one(t):


def main(): def main():


targets = ['arty','nexys-video', 'genesys2', 'acorn-cle-215', 'wukong-v2', 'orangecrab-85-0.2', 'sim'] targets = ['arty','nexys-video', 'genesys2', 'acorn-cle-215', 'wukong-v2', 'orangecrab-85-0.2',
'ecpix-5', 'sim']
for t in targets: for t in targets:
generate_one(t) generate_one(t)

5
litedram/gen-src/sdram_init/Makefile
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@ -5,7 +5,8 @@ OBJ = $(BUILD_DIR)/obj
LXINC_DIR=$(LXSRC_DIR)/include LXINC_DIR=$(LXSRC_DIR)/include


PROGRAM = sdram_init PROGRAM = sdram_init
OBJECTS = $(OBJ)/head.o $(OBJ)/main.o $(OBJ)/sdram.o $(OBJ)/memtest.o $(OBJ)/console.o OBJECTS = $(OBJ)/head.o $(OBJ)/main.o $(OBJ)/sdram.o $(OBJ)/accessors.o \
$(OBJ)/memtest.o $(OBJ)/console.o


#### Compiler #### Compiler


@ -58,6 +59,8 @@ all: objdir $(OBJ)/$(PROGRAM).hex


$(OBJ)/sdram.o: $(LXSRC_DIR)/liblitedram/sdram.c $(OBJ)/sdram.o: $(LXSRC_DIR)/liblitedram/sdram.c
$(call Q,CC, $(CC) $(CPPFLAGS) $(CFLAGS) -c $< -o $@, $@) $(call Q,CC, $(CC) $(CPPFLAGS) $(CFLAGS) -c $< -o $@, $@)
$(OBJ)/accessors.o: $(LXSRC_DIR)/liblitedram/accessors.c
$(call Q,CC, $(CC) $(CPPFLAGS) $(CFLAGS) -c $< -o $@, $@)
$(OBJ)/memtest.o: $(LXSRC_DIR)/libbase/memtest.c $(OBJ)/memtest.o: $(LXSRC_DIR)/libbase/memtest.c
$(call Q,CC, $(CC) $(CPPFLAGS) $(CFLAGS) -c $< -o $@, $@) $(call Q,CC, $(CC) $(CPPFLAGS) $(CFLAGS) -c $< -o $@, $@)
$(OBJ)/console.o: $(SRC_DIR)/../../../lib/console.c $(OBJ)/console.o: $(SRC_DIR)/../../../lib/console.c

48
litedram/gen-src/sdram_init/main.c
Unescape Escape View File

@ -41,6 +41,7 @@ void flush_cpu_icache(void)
#define SPI_CMD_READ 0x03 #define SPI_CMD_READ 0x03
#define SPI_CMD_DUAL_FREAD 0x3b #define SPI_CMD_DUAL_FREAD 0x3b
#define SPI_CMD_QUAD_FREAD 0x6b #define SPI_CMD_QUAD_FREAD 0x6b
#define SPI_CMD_QUAD_FREAD_4BA 0x6c
#define SPI_CMD_RDCR 0x35 #define SPI_CMD_RDCR 0x35
#define SPI_CMD_WREN 0x06 #define SPI_CMD_WREN 0x06
#define SPI_CMD_PP 0x02 #define SPI_CMD_PP 0x02
@ -106,10 +107,44 @@ static void check_spansion_quad_mode(void)
wait_wip(); wait_wip();
} }


static uint32_t check_enable_issi_quad(void)
{
uint8_t sr;

/* Read status register to see if quad mode is already enabled */
fl_cs_on();
writeb(SPI_CMD_RDSR, SPI_FCTRL_BASE + SPI_REG_DATA);
sr = readb(SPI_FCTRL_BASE + SPI_REG_DATA);
fl_cs_off();
if ((sr & 0x40) == 0) {
printf(" [enabling quad]");
send_wren();
fl_cs_on();
writeb(SPI_CMD_WWR, SPI_FCTRL_BASE + SPI_REG_DATA);
writeb(sr | 0x40, SPI_FCTRL_BASE + SPI_REG_DATA);
fl_cs_off();
wait_wip();
}

/* Enable quad mode and 4B addresses, 8 dummy cycles */
return SPI_CMD_QUAD_FREAD_4BA |
(0x07 << SPI_REG_AUTO_CFG_DUMMIES_SHIFT) |
SPI_REG_AUT_CFG_MODE_QUAD | SPI_REG_AUTO_CFG_ADDR4 |
(0x20 << SPI_REG_AUTO_CFG_CSTOUT_SHIFT);
}

static bool check_flash(void) static bool check_flash(void)
{ {
bool quad = false; bool quad = false;
uint8_t id[3]; uint8_t id[3];
uint32_t autocfg;

/* default auto mode configuration for quad reads: */
/* Enable quad mode, 8 dummy clocks, 32 cycles CS timeout */
autocfg = SPI_CMD_QUAD_FREAD |
(0x07 << SPI_REG_AUTO_CFG_DUMMIES_SHIFT) |
SPI_REG_AUT_CFG_MODE_QUAD |
(0x20 << SPI_REG_AUTO_CFG_CSTOUT_SHIFT);


fl_cs_on(); fl_cs_on();
writeb(SPI_CMD_RDID, SPI_FCTRL_BASE + SPI_REG_DATA); writeb(SPI_CMD_RDID, SPI_FCTRL_BASE + SPI_REG_DATA);
@ -134,6 +169,13 @@ static bool check_flash(void)
printf(" Micron"); printf(" Micron");
quad = true; quad = true;
} }
if (id[0] == 0x9d && (id[1] & ~0x10) == 0x60 &&
id[2] == 0x19) {
/* ISSI IS25LP256D or IS25WP256D */
printf(" ISSI");
autocfg = check_enable_issi_quad();
quad = true;
}
if (quad) { if (quad) {
uint32_t cfg; uint32_t cfg;
printf(" [quad IO mode]"); printf(" [quad IO mode]");
@ -141,12 +183,8 @@ static bool check_flash(void)
/* Preserve the default clock div for the board */ /* Preserve the default clock div for the board */
cfg = readl(SPI_FCTRL_BASE + SPI_REG_AUTO_CFG); cfg = readl(SPI_FCTRL_BASE + SPI_REG_AUTO_CFG);
cfg &= SPI_REG_AUTO_CFG_CKDIV_MASK; cfg &= SPI_REG_AUTO_CFG_CKDIV_MASK;
cfg |= autocfg;


/* Enable quad mode, 8 dummy clocks, 32 cycles CS timeout */
cfg |= SPI_CMD_QUAD_FREAD |
(0x07 << SPI_REG_AUTO_CFG_DUMMIES_SHIFT) |
SPI_REG_AUT_CFG_MODE_QUAD |
(0x20 << SPI_REG_AUTO_CFG_CSTOUT_SHIFT);
writel(cfg, SPI_FCTRL_BASE + SPI_REG_AUTO_CFG); writel(cfg, SPI_FCTRL_BASE + SPI_REG_AUTO_CFG);
} }
printf("\n"); printf("\n");

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litedram/generated/ecpix-5/litedram-initmem.vhdl
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@ -0,0 +1,123 @@
library ieee;
use ieee.std_logic_1164.all;
use ieee.numeric_std.all;
use std.textio.all;

library work;
use work.wishbone_types.all;
use work.utils.all;

entity dram_init_mem is
generic (
EXTRA_PAYLOAD_FILE : string := "";
EXTRA_PAYLOAD_SIZE : integer := 0
);
port (
clk : in std_ulogic;
wb_in : in wb_io_master_out;
wb_out : out wb_io_slave_out
);
end entity dram_init_mem;

architecture rtl of dram_init_mem is

constant INIT_RAM_SIZE : integer := 24576;
constant RND_PAYLOAD_SIZE : integer := round_up(EXTRA_PAYLOAD_SIZE, 8);
constant TOTAL_RAM_SIZE : integer := INIT_RAM_SIZE + RND_PAYLOAD_SIZE;
constant INIT_RAM_ABITS : integer := log2ceil(TOTAL_RAM_SIZE-1);
constant INIT_RAM_FILE : string := "litedram_core.init";

type ram_t is array(0 to (TOTAL_RAM_SIZE / 4) - 1) of std_logic_vector(31 downto 0);

-- XXX FIXME: Have a single init function called twice with
-- an offset as argument
procedure init_load_payload(ram: inout ram_t; filename: string) is
file payload_file : text open read_mode is filename;
variable ram_line : line;
variable temp_word : std_logic_vector(63 downto 0);
begin
for i in 0 to RND_PAYLOAD_SIZE-1 loop
exit when endfile(payload_file);
readline(payload_file, ram_line);
hread(ram_line, temp_word);
ram((INIT_RAM_SIZE/4) + i*2) := temp_word(31 downto 0);
ram((INIT_RAM_SIZE/4) + i*2+1) := temp_word(63 downto 32);
end loop;
assert endfile(payload_file) report "Payload too big !" severity failure;
end procedure;

impure function init_load_ram(name : string) return ram_t is
file ram_file : text open read_mode is name;
variable temp_word : std_logic_vector(63 downto 0);
variable temp_ram : ram_t := (others => (others => '0'));
variable ram_line : line;
begin
report "Payload size:" & integer'image(EXTRA_PAYLOAD_SIZE) &
" rounded to:" & integer'image(RND_PAYLOAD_SIZE);
report "Total RAM size:" & integer'image(TOTAL_RAM_SIZE) &
" bytes using " & integer'image(INIT_RAM_ABITS) &
" address bits";
for i in 0 to (INIT_RAM_SIZE/8)-1 loop
exit when endfile(ram_file);
readline(ram_file, ram_line);
hread(ram_line, temp_word);
temp_ram(i*2) := temp_word(31 downto 0);
temp_ram(i*2+1) := temp_word(63 downto 32);
end loop;
if RND_PAYLOAD_SIZE /= 0 then
init_load_payload(temp_ram, EXTRA_PAYLOAD_FILE);
end if;
return temp_ram;
end function;

impure function init_zero return ram_t is
variable temp_ram : ram_t := (others => (others => '0'));
begin
return temp_ram;
end function;

impure function initialize_ram(filename: string) return ram_t is
begin
report "Opening file " & filename;
if filename'length = 0 then
return init_zero;
else
return init_load_ram(filename);
end if;
end function;
signal init_ram : ram_t := initialize_ram(INIT_RAM_FILE);

attribute ram_style : string;
attribute ram_style of init_ram: signal is "block";

signal obuf : std_ulogic_vector(31 downto 0);
signal oack : std_ulogic;
begin

init_ram_0: process(clk)
variable adr : integer;
begin
if rising_edge(clk) then
oack <= '0';
if (wb_in.cyc and wb_in.stb) = '1' then
adr := to_integer((unsigned(wb_in.adr(INIT_RAM_ABITS - 3 downto 0))));
if wb_in.we = '0' then
obuf <= init_ram(adr);
else
for i in 0 to 3 loop
if wb_in.sel(i) = '1' then
init_ram(adr)(((i + 1) * 8) - 1 downto i * 8) <=
wb_in.dat(((i + 1) * 8) - 1 downto i * 8);
end if;
end loop;
end if;
oack <= '1';
end if;
wb_out.ack <= oack;
wb_out.dat <= obuf;
end if;
end process;

wb_out.stall <= '0';

end architecture rtl;

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litedram/generated/wukong-v2/litedram_core.init
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liteeth/gen-src/ecpix-5.yml
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@ -0,0 +1,18 @@
# This file is derived from nexys_video.yml, which is:
# Copyright (c) 2020 Florent Kermarrec <florent@enjoy-digital.fr>
# License: BSD

# PHY ----------------------------------------------------------------------
phy: LiteEthECP5PHYRGMII
vendor: lattice
# Core ---------------------------------------------------------------------
clk_freq: 125e6
core: wishbone
endianness: little
ntxslots: 2
nrxslots: 2
phy_rx_delay: 0

soc:
mem_map:
ethmac: 0x00010000

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liteeth/gen-src/generate.sh
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@ -1,6 +1,6 @@
#!/bin/bash #!/bin/bash


TARGETS="arty nexys-video wukong-v2" TARGETS="arty nexys-video wukong-v2 ecpix-5"


ME=$(realpath $0) ME=$(realpath $0)
echo ME=$ME echo ME=$ME

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litesdcard/fusesoc-add-files.py
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@ -7,10 +7,12 @@ import pathlib
class LiteSDCardGenerator(Generator): class LiteSDCardGenerator(Generator):
def run(self): def run(self):
vendor = self.config.get('vendor') vendor = self.config.get('vendor')
clk = self.config.get('frequency')
vf = vendor + "." + clk


# Collect a bunch of directory path # Collect a bunch of directory path
script_dir = os.path.dirname(sys.argv[0]) script_dir = os.path.dirname(sys.argv[0])
gen_dir = os.path.join(script_dir, "generated", vendor) gen_dir = os.path.join(script_dir, "generated", vf)


print("Adding LiteSDCard for vendor... ", vendor) print("Adding LiteSDCard for vendor... ", vendor)



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litesdcard/gen-src/generate.sh
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@ -1,7 +1,7 @@
#!/bin/bash #!/bin/bash


# vendor:sysclk # vendor:sysclk
VENDORS="xilinx:100e6 lattice:48e6" VENDORS="xilinx:100e6 lattice:48e6 lattice:50e6"


ME=$(realpath $0) ME=$(realpath $0)
echo ME=$ME echo ME=$ME
@ -18,8 +18,8 @@ for i_clk in $VENDORS
do do
i=$(echo $i_clk | cut -d : -f 1) i=$(echo $i_clk | cut -d : -f 1)
clk=$(echo $i_clk | cut -d : -f 2) clk=$(echo $i_clk | cut -d : -f 2)
TARGET_BUILD_PATH=$BUILD_PATH/$i TARGET_BUILD_PATH=$BUILD_PATH/$i.$clk
TARGET_GEN_PATH=$GEN_PATH/$i TARGET_GEN_PATH=$GEN_PATH/$i.$clk
rm -rf $TARGET_BUILD_PATH rm -rf $TARGET_BUILD_PATH
rm -rf $TARGET_GEN_PATH rm -rf $TARGET_GEN_PATH
mkdir -p $TARGET_BUILD_PATH mkdir -p $TARGET_BUILD_PATH

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microwatt.core
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@ -460,11 +460,11 @@ generate:


litesdcard_arty: litesdcard_arty:
generator: litesdcard_gen generator: litesdcard_gen
parameters: {vendor : xilinx} parameters: {vendor : xilinx, frequency : 100e6}


litesdcard_nexys_video: litesdcard_nexys_video:
generator: litesdcard_gen generator: litesdcard_gen
parameters: {vendor : xilinx} parameters: {vendor : xilinx, frequency : 100e6}


litedram_nexys_video: litedram_nexys_video:
generator: litedram_gen generator: litedram_gen
@ -492,7 +492,7 @@ generate:


litesdcard_wukong-v2: litesdcard_wukong-v2:
generator: litesdcard_gen generator: litesdcard_gen
parameters: {vendor : xilinx} parameters: {vendor : xilinx, frequency : 100e6}


parameters: parameters:
memory_size: memory_size:

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openocd/ecpix-5.cfg
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adapter driver ftdi
ftdi vid_pid 0x0403 0x6011
ftdi channel 0
ftdi layout_init 0xfff8 0xfffb
reset_config none
adapter speed 25000
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