forked from cores/microwatt
orangecrab: add Orange Crab r0.2 target
top-orangecrab0.2 is a copy of top-arty with various changes. USRMCLK is added for the SPI clock ethernet is removed Signed-off-by: Matt Johnston <matt@codeconstruct.com.au>fpu-constant
Matt Johnston
4 years ago
parent
8901e84d8d
commit
a9b467f43b
@ -0,0 +1,225 @@
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LOCATE COMP "ext_clk" SITE "A9";
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IOBUF PORT "ext_clk" IO_TYPE=LVCMOS33;
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// LOCATE COMP "ext_rst_n" SITE "J2"; // io_13
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// IOBUF PORT "ext_rst_n" PULLMODE=UP IO_TYPE=LVCMOS33 DRIVE=4;
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// user_button as reset
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LOCATE COMP "ext_rst_n" SITE "J17";
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IOBUF PORT "ext_rst_n" IO_TYPE=SSTL135_I;
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LOCATE COMP "usb_d_p" SITE "N1";
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LOCATE COMP "usb_d_n" SITE "M2";
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LOCATE COMP "usb_pullup" SITE "N2";
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IOBUF PORT "usb_d_p" IO_TYPE=LVCMOS33;
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IOBUF PORT "usb_d_n" IO_TYPE=LVCMOS33;
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IOBUF PORT "usb_pullup" IO_TYPE=LVCMOS33;
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LOCATE COMP "led0_g" SITE "M3";
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LOCATE COMP "led0_r" SITE "K4";
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LOCATE COMP "led0_b" SITE "J3";
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IOBUF PORT "led0_g" IO_TYPE=LVCMOS33;
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IOBUF PORT "led0_g" IO_TYPE=LVCMOS33;
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IOBUF PORT "led0_b" IO_TYPE=LVCMOS33;
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// discontinuous gpio numbers, match orangecrab litex platform
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LOCATE COMP "pin_gpio_0" SITE "N17"; // tx
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LOCATE COMP "pin_gpio_1" SITE "M18"; // rx
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LOCATE COMP "pin_gpio_2" SITE "C10"; // sda
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LOCATE COMP "pin_gpio_3" SITE "C9"; // scl
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//
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LOCATE COMP "pin_gpio_5" SITE "B10"; // io_5
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LOCATE COMP "pin_gpio_6" SITE "B9"; // ...
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//
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LOCATE COMP "pin_gpio_9" SITE "C8"; //
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LOCATE COMP "pin_gpio_10" SITE "B8"; //
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LOCATE COMP "pin_gpio_11" SITE "A8"; //
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LOCATE COMP "pin_gpio_12" SITE "H2"; //
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LOCATE COMP "pin_gpio_13" SITE "J2"; // io_13
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LOCATE COMP "pin_gpio_14" SITE "N15"; // miso
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LOCATE COMP "pin_gpio_15" SITE "R17"; // sck
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LOCATE COMP "pin_gpio_16" SITE "N16"; // mosi
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LOCATE COMP "pin_io_a0" SITE "L4";
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LOCATE COMP "pin_io_a1" SITE "N3";
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LOCATE COMP "pin_io_a2" SITE "N4";
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LOCATE COMP "pin_io_a3" SITE "H4";
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LOCATE COMP "pin_io_a4" SITE "G4";
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LOCATE COMP "pin_io_a5" SITE "T17";
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IOBUF PORT "pin_gpio_0" IO_TYPE=LVCMOS33;
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IOBUF PORT "pin_gpio_1" IO_TYPE=LVCMOS33;
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IOBUF PORT "pin_gpio_2" IO_TYPE=LVCMOS33;
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IOBUF PORT "pin_gpio_3" IO_TYPE=LVCMOS33;
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IOBUF PORT "pin_gpio_5" IO_TYPE=LVCMOS33;
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IOBUF PORT "pin_gpio_6" IO_TYPE=LVCMOS33;
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IOBUF PORT "pin_gpio_9" IO_TYPE=LVCMOS33;
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IOBUF PORT "pin_gpio_10" IO_TYPE=LVCMOS33;
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IOBUF PORT "pin_gpio_11" IO_TYPE=LVCMOS33;
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IOBUF PORT "pin_gpio_12" IO_TYPE=LVCMOS33;
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IOBUF PORT "pin_gpio_13" IO_TYPE=LVCMOS33;
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IOBUF PORT "pin_gpio_14" IO_TYPE=LVCMOS33;
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IOBUF PORT "pin_gpio_15" IO_TYPE=LVCMOS33;
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IOBUF PORT "pin_gpio_16" IO_TYPE=LVCMOS33;
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IOBUF PORT "pin_io_a0" IO_TYPE=LVCMOS33;
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IOBUF PORT "pin_io_a1" IO_TYPE=LVCMOS33;
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IOBUF PORT "pin_io_a2" IO_TYPE=LVCMOS33;
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IOBUF PORT "pin_io_a3" IO_TYPE=LVCMOS33;
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IOBUF PORT "pin_io_a4" IO_TYPE=LVCMOS33;
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IOBUF PORT "pin_io_a5" IO_TYPE=LVCMOS33;
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LOCATE COMP "ddram_a[0]" SITE "C4";
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LOCATE COMP "ddram_a[1]" SITE "D2";
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LOCATE COMP "ddram_a[2]" SITE "D3";
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LOCATE COMP "ddram_a[3]" SITE "A3";
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LOCATE COMP "ddram_a[4]" SITE "A4";
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LOCATE COMP "ddram_a[5]" SITE "D4";
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LOCATE COMP "ddram_a[6]" SITE "C3";
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LOCATE COMP "ddram_a[7]" SITE "B2";
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LOCATE COMP "ddram_a[8]" SITE "B1";
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LOCATE COMP "ddram_a[9]" SITE "D1";
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LOCATE COMP "ddram_a[10]" SITE "A7";
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LOCATE COMP "ddram_a[11]" SITE "C2";
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LOCATE COMP "ddram_a[12]" SITE "B6";
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LOCATE COMP "ddram_a[13]" SITE "C1";
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LOCATE COMP "ddram_a[14]" SITE "A2";
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LOCATE COMP "ddram_a[15]" SITE "C7";
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IOBUF PORT "ddram_a[0]" IO_TYPE=SSTL135_I SLEWRATE=FAST;
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IOBUF PORT "ddram_a[1]" IO_TYPE=SSTL135_I SLEWRATE=FAST;
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IOBUF PORT "ddram_a[2]" IO_TYPE=SSTL135_I SLEWRATE=FAST;
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IOBUF PORT "ddram_a[3]" IO_TYPE=SSTL135_I SLEWRATE=FAST;
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IOBUF PORT "ddram_a[4]" IO_TYPE=SSTL135_I SLEWRATE=FAST;
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IOBUF PORT "ddram_a[5]" IO_TYPE=SSTL135_I SLEWRATE=FAST;
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IOBUF PORT "ddram_a[6]" IO_TYPE=SSTL135_I SLEWRATE=FAST;
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IOBUF PORT "ddram_a[7]" IO_TYPE=SSTL135_I SLEWRATE=FAST;
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IOBUF PORT "ddram_a[8]" IO_TYPE=SSTL135_I SLEWRATE=FAST;
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IOBUF PORT "ddram_a[9]" IO_TYPE=SSTL135_I SLEWRATE=FAST;
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IOBUF PORT "ddram_a[10]" IO_TYPE=SSTL135_I SLEWRATE=FAST;
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IOBUF PORT "ddram_a[11]" IO_TYPE=SSTL135_I SLEWRATE=FAST;
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IOBUF PORT "ddram_a[12]" IO_TYPE=SSTL135_I SLEWRATE=FAST;
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IOBUF PORT "ddram_a[13]" IO_TYPE=SSTL135_I SLEWRATE=FAST;
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IOBUF PORT "ddram_a[14]" IO_TYPE=SSTL135_I SLEWRATE=FAST;
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IOBUF PORT "ddram_a[15]" IO_TYPE=SSTL135_I SLEWRATE=FAST;
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LOCATE COMP "ddram_ba[0]" SITE "D6";
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LOCATE COMP "ddram_ba[1]" SITE "B7";
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LOCATE COMP "ddram_ba[2]" SITE "A6";
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LOCATE COMP "ddram_cas_n" SITE "D13";
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LOCATE COMP "ddram_cs_n" SITE "A12";
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LOCATE COMP "ddram_dm[0]" SITE "D16";
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LOCATE COMP "ddram_dm[1]" SITE "G16";
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LOCATE COMP "ddram_ras_n" SITE "C12";
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LOCATE COMP "ddram_we_n" SITE "B12";
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IOBUF PORT "ddram_ba[0]" IO_TYPE=SSTL135_I SLEWRATE=FAST;
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IOBUF PORT "ddram_ba[1]" IO_TYPE=SSTL135_I SLEWRATE=FAST;
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IOBUF PORT "ddram_ba[2]" IO_TYPE=SSTL135_I SLEWRATE=FAST;
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IOBUF PORT "ddram_cas_n" IO_TYPE=SSTL135_I SLEWRATE=FAST;
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IOBUF PORT "ddram_cs_n" IO_TYPE=SSTL135_I SLEWRATE=FAST;
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IOBUF PORT "ddram_dm[0]" IO_TYPE=SSTL135_I SLEWRATE=FAST;
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IOBUF PORT "ddram_dm[1]" IO_TYPE=SSTL135_I SLEWRATE=FAST;
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IOBUF PORT "ddram_ras_n" IO_TYPE=SSTL135_I SLEWRATE=FAST;
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IOBUF PORT "ddram_we_n" IO_TYPE=SSTL135_I SLEWRATE=FAST;
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// from litex platform, termination disabled to reduce heat
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LOCATE COMP "ddram_dq[0]" SITE "C17";
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LOCATE COMP "ddram_dq[1]" SITE "D15";
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LOCATE COMP "ddram_dq[2]" SITE "B17";
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LOCATE COMP "ddram_dq[3]" SITE "C16";
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LOCATE COMP "ddram_dq[4]" SITE "A15";
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LOCATE COMP "ddram_dq[5]" SITE "B13";
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LOCATE COMP "ddram_dq[6]" SITE "A17";
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LOCATE COMP "ddram_dq[7]" SITE "A13";
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LOCATE COMP "ddram_dq[8]" SITE "F17";
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LOCATE COMP "ddram_dq[9]" SITE "F16";
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LOCATE COMP "ddram_dq[10]" SITE "G15";
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LOCATE COMP "ddram_dq[11]" SITE "F15";
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LOCATE COMP "ddram_dq[12]" SITE "J16";
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LOCATE COMP "ddram_dq[13]" SITE "C18";
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LOCATE COMP "ddram_dq[14]" SITE "H16";
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LOCATE COMP "ddram_dq[15]" SITE "F18";
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IOBUF PORT "ddram_dq[0]" IO_TYPE=SSTL135_I SLEWRATE=FAST TERMINATION=OFF;
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IOBUF PORT "ddram_dq[1]" IO_TYPE=SSTL135_I SLEWRATE=FAST TERMINATION=OFF;
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IOBUF PORT "ddram_dq[2]" IO_TYPE=SSTL135_I SLEWRATE=FAST TERMINATION=OFF;
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IOBUF PORT "ddram_dq[3]" IO_TYPE=SSTL135_I SLEWRATE=FAST TERMINATION=OFF;
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IOBUF PORT "ddram_dq[4]" IO_TYPE=SSTL135_I SLEWRATE=FAST TERMINATION=OFF;
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IOBUF PORT "ddram_dq[5]" IO_TYPE=SSTL135_I SLEWRATE=FAST TERMINATION=OFF;
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IOBUF PORT "ddram_dq[6]" IO_TYPE=SSTL135_I SLEWRATE=FAST TERMINATION=OFF;
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IOBUF PORT "ddram_dq[7]" IO_TYPE=SSTL135_I SLEWRATE=FAST TERMINATION=OFF;
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IOBUF PORT "ddram_dq[8]" IO_TYPE=SSTL135_I SLEWRATE=FAST TERMINATION=OFF;
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IOBUF PORT "ddram_dq[9]" IO_TYPE=SSTL135_I SLEWRATE=FAST TERMINATION=OFF;
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IOBUF PORT "ddram_dq[10]" IO_TYPE=SSTL135_I SLEWRATE=FAST TERMINATION=OFF;
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IOBUF PORT "ddram_dq[11]" IO_TYPE=SSTL135_I SLEWRATE=FAST TERMINATION=OFF;
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IOBUF PORT "ddram_dq[12]" IO_TYPE=SSTL135_I SLEWRATE=FAST TERMINATION=OFF;
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IOBUF PORT "ddram_dq[13]" IO_TYPE=SSTL135_I SLEWRATE=FAST TERMINATION=OFF;
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IOBUF PORT "ddram_dq[14]" IO_TYPE=SSTL135_I SLEWRATE=FAST TERMINATION=OFF;
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IOBUF PORT "ddram_dq[15]" IO_TYPE=SSTL135_I SLEWRATE=FAST TERMINATION=OFF;
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LOCATE COMP "ddram_dqs_n[0]" SITE "A16";
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LOCATE COMP "ddram_dqs_n[1]" SITE "H17";
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LOCATE COMP "ddram_dqs_p[0]" SITE "B15";
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LOCATE COMP "ddram_dqs_p[1]" SITE "G18";
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IOBUF PORT "ddram_dqs_n[0]" IO_TYPE=SSTL135D_I SLEWRATE=FAST DIFFRESISTOR=100 TERMINATION=OFF;
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IOBUF PORT "ddram_dqs_n[1]" IO_TYPE=SSTL135D_I SLEWRATE=FAST DIFFRESISTOR=100 TERMINATION=OFF;
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IOBUF PORT "ddram_dqs_p[0]" IO_TYPE=SSTL135D_I SLEWRATE=FAST DIFFRESISTOR=100 TERMINATION=OFF;
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IOBUF PORT "ddram_dqs_p[1]" IO_TYPE=SSTL135D_I SLEWRATE=FAST DIFFRESISTOR=100 TERMINATION=OFF;
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LOCATE COMP "ddram_clk_p" SITE "J18";
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LOCATE COMP "ddram_clk_n" SITE "K18";
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IOBUF PORT "ddram_clk_p" IO_TYPE=SSTL135D_I SLEWRATE=FAST;
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IOBUF PORT "ddram_clk_n" IO_TYPE=SSTL135D_I SLEWRATE=FAST;
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LOCATE COMP "ddram_cke" SITE "D18";
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LOCATE COMP "ddram_odt" SITE "C13";
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LOCATE COMP "ddram_reset_n" SITE "L18";
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IOBUF PORT "ddram_cke" IO_TYPE=SSTL135_I SLEWRATE=FAST;
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IOBUF PORT "ddram_odt" IO_TYPE=SSTL135_I SLEWRATE=FAST;
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IOBUF PORT "ddram_reset_n" IO_TYPE=SSTL135_I SLEWRATE=FAST;
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LOCATE COMP "ddram_vccio[0]" SITE "K16";
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LOCATE COMP "ddram_vccio[1]" SITE "D17";
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LOCATE COMP "ddram_vccio[2]" SITE "K15";
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LOCATE COMP "ddram_vccio[3]" SITE "K17";
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LOCATE COMP "ddram_vccio[4]" SITE "B18";
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LOCATE COMP "ddram_vccio[5]" SITE "C6";
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LOCATE COMP "ddram_gnd[0]" SITE "L15";
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LOCATE COMP "ddram_gnd[1]" SITE "L16";
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IOBUF PORT "ddram_vccio[0]" IO_TYPE=SSTL135_II SLEWRATE=FAST;
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IOBUF PORT "ddram_vccio[1]" IO_TYPE=SSTL135_II SLEWRATE=FAST;
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IOBUF PORT "ddram_vccio[2]" IO_TYPE=SSTL135_II SLEWRATE=FAST;
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IOBUF PORT "ddram_vccio[3]" IO_TYPE=SSTL135_II SLEWRATE=FAST;
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IOBUF PORT "ddram_vccio[4]" IO_TYPE=SSTL135_II SLEWRATE=FAST;
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IOBUF PORT "ddram_vccio[5]" IO_TYPE=SSTL135_II SLEWRATE=FAST;
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IOBUF PORT "ddram_gnd[0]" IO_TYPE=SSTL135_II SLEWRATE=FAST;
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IOBUF PORT "ddram_gnd[1]" IO_TYPE=SSTL135_II SLEWRATE=FAST;
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// We use USRMCLK instead for clk
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// LOCATE COMP "spi_flash_clk" SITE "U16";
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// IOBUF PORT "spi_flash_clk" IO_TYPE=LVCMOS33;
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LOCATE COMP "spi_flash_cs_n" SITE "U17";
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IOBUF PORT "spi_flash_cs_n" IO_TYPE=LVCMOS33;
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LOCATE COMP "spi_flash_mosi" SITE "U18";
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IOBUF PORT "spi_flash_mosi" IO_TYPE=LVCMOS33;
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LOCATE COMP "spi_flash_miso" SITE "T18";
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IOBUF PORT "spi_flash_miso" IO_TYPE=LVCMOS33;
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LOCATE COMP "spi_flash_wp_n" SITE "R18";
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IOBUF PORT "spi_flash_wp_n" IO_TYPE=LVCMOS33;
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LOCATE COMP "spi_flash_hold_n" SITE "N18";
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IOBUF PORT "spi_flash_hold_n" IO_TYPE=LVCMOS33;
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LOCATE COMP "sdcard_data[0]" SITE "J1";
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LOCATE COMP "sdcard_data[1]" SITE "K3";
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LOCATE COMP "sdcard_data[2]" SITE "L3";
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LOCATE COMP "sdcard_data[3]" SITE "M1";
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LOCATE COMP "sdcard_cmd" SITE "K2";
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LOCATE COMP "sdcard_clk" SITE "K1";
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LOCATE COMP "sdcard_cd" SITE "L1";
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IOBUF PORT "sdcard_data[0]" IO_TYPE=LVCMOS33 SLEWRATE=FAST PULLMODE=UP;
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IOBUF PORT "sdcard_data[1]" IO_TYPE=LVCMOS33 SLEWRATE=FAST PULLMODE=UP;
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IOBUF PORT "sdcard_data[2]" IO_TYPE=LVCMOS33 SLEWRATE=FAST PULLMODE=UP;
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IOBUF PORT "sdcard_data[3]" IO_TYPE=LVCMOS33 SLEWRATE=FAST PULLMODE=UP;
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IOBUF PORT "sdcard_cmd" IO_TYPE=LVCMOS33 SLEWRATE=FAST PULLMODE=UP;
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IOBUF PORT "sdcard_clk" IO_TYPE=LVCMOS33 SLEWRATE=FAST;
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IOBUF PORT "sdcard_cd" IO_TYPE=LVCMOS33;
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@ -0,0 +1,509 @@
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library ieee;
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use ieee.std_logic_1164.all;
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use ieee.numeric_std.all;
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library work;
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use work.wishbone_types.all;
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entity toplevel is
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generic (
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MEMORY_SIZE : integer := 16384;
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RAM_INIT_FILE : string := "firmware.hex";
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RESET_LOW : boolean := true;
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CLK_INPUT : positive := 100000000;
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CLK_FREQUENCY : positive := 100000000;
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HAS_FPU : boolean := true;
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HAS_BTC : boolean := true;
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USE_LITEDRAM : boolean := false;
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NO_BRAM : boolean := false;
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SCLK_STARTUPE2 : boolean := false;
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SPI_FLASH_OFFSET : integer := 4194304;
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SPI_FLASH_DEF_CKDV : natural := 1;
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SPI_FLASH_DEF_QUAD : boolean := true;
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LOG_LENGTH : natural := 512;
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UART_IS_16550 : boolean := true;
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HAS_UART1 : boolean := true;
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USE_LITESDCARD : boolean := false;
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ICACHE_NUM_LINES : natural := 64;
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NGPIO : natural := 32
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);
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port(
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ext_clk : in std_ulogic;
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ext_rst_n : in std_ulogic;
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-- UART0 signals:
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pin_gpio_0 : out std_ulogic;
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pin_gpio_1 : in std_ulogic;
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-- LEDs
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led0_b : out std_ulogic;
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led0_g : out std_ulogic;
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led0_r : out std_ulogic;
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-- SPI
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spi_flash_cs_n : out std_ulogic;
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spi_flash_mosi : inout std_ulogic;
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spi_flash_miso : inout std_ulogic;
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spi_flash_wp_n : inout std_ulogic;
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spi_flash_hold_n : inout std_ulogic;
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-- SD card
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sdcard_data : inout std_ulogic_vector(3 downto 0);
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sdcard_cmd : inout std_ulogic;
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sdcard_clk : out std_ulogic;
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sdcard_cd : in std_ulogic;
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-- DRAM wires
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ddram_a : out std_ulogic_vector(13 downto 0);
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ddram_ba : out std_ulogic_vector(2 downto 0);
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ddram_ras_n : out std_ulogic;
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ddram_cas_n : out std_ulogic;
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ddram_we_n : out std_ulogic;
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ddram_cs_n : out std_ulogic;
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ddram_dm : out std_ulogic_vector(1 downto 0);
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ddram_dq : inout std_ulogic_vector(15 downto 0);
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ddram_dqs_p : inout std_ulogic_vector(1 downto 0);
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ddram_clk_p : out std_ulogic;
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-- only the positive differential pin is instantiated
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--ddram_dqs_n : inout std_ulogic_vector(1 downto 0);
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--ddram_clk_n : out std_ulogic;
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ddram_cke : out std_ulogic;
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ddram_odt : out std_ulogic;
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ddram_reset_n : out std_ulogic;
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ddram_gnd : out std_ulogic_vector(1 downto 0);
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ddram_vccio : out std_ulogic_vector(5 downto 0)
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);
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end entity toplevel;
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architecture behaviour of toplevel is
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-- Reset signals:
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signal soc_rst : std_ulogic;
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signal pll_rst : std_ulogic;
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-- Internal clock signals:
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signal system_clk : std_ulogic;
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||||
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_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;
|
||||
|
||||
-- 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;
|
||||
|
||||
-- Control/status
|
||||
signal core_alt_reset : std_ulogic;
|
||||
|
||||
-- Status LED
|
||||
signal led0_b_pwm : std_ulogic;
|
||||
signal led0_r_pwm : std_ulogic;
|
||||
signal led0_g_pwm : std_ulogic;
|
||||
|
||||
-- Dumb PWM for the LEDs, those RGB LEDs are too bright otherwise
|
||||
signal pwm_counter : std_ulogic_vector(8 downto 0);
|
||||
|
||||
-- SPI flash
|
||||
signal spi_sck : 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);
|
||||
|
||||
-- GPIO
|
||||
signal gpio_in : std_ulogic_vector(NGPIO - 1 downto 0);
|
||||
signal gpio_out : std_ulogic_vector(NGPIO - 1 downto 0);
|
||||
signal gpio_dir : std_ulogic_vector(NGPIO - 1 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 => 256 * 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_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 => pin_gpio_0,
|
||||
uart0_rxd => pin_gpio_1,
|
||||
|
||||
-- UART1 signals
|
||||
--uart1_txd => uart_pmod_tx,
|
||||
--uart1_rxd => uart_pmod_rx,
|
||||
|
||||
-- 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,
|
||||
|
||||
-- GPIO signals
|
||||
gpio_in => gpio_in,
|
||||
gpio_out => gpio_out,
|
||||
gpio_dir => gpio_dir,
|
||||
|
||||
-- External interrupts
|
||||
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_sdcard => wb_ext_is_sdcard,
|
||||
|
||||
-- DMA wishbone
|
||||
wishbone_dma_in => wb_sddma_in,
|
||||
wishbone_dma_out => wb_sddma_out,
|
||||
|
||||
alt_reset => core_alt_reset
|
||||
);
|
||||
|
||||
-- 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;
|
||||
|
||||
uclk: USRMCLK port map (
|
||||
USRMCLKI => spi_sck,
|
||||
USRMCLKTS => '0'
|
||||
);
|
||||
|
||||
nodram: if not USE_LITEDRAM generate
|
||||
signal ddram_clk_dummy : std_ulogic;
|
||||
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,
|
||||
pll_rst_out => pll_rst,
|
||||
rst_out => soc_rst
|
||||
);
|
||||
|
||||
clkgen: entity work.clock_generator
|
||||
generic map(
|
||||
CLK_INPUT_HZ => CLK_INPUT,
|
||||
CLK_OUTPUT_HZ => CLK_FREQUENCY
|
||||
)
|
||||
port map(
|
||||
ext_clk => ext_clk,
|
||||
pll_rst_in => pll_rst,
|
||||
pll_clk_out => system_clk,
|
||||
pll_locked_out => system_clk_locked
|
||||
);
|
||||
|
||||
led0_b_pwm <= '1';
|
||||
led0_r_pwm <= '1';
|
||||
led0_g_pwm <= '0';
|
||||
core_alt_reset <= '0';
|
||||
|
||||
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;
|
||||
signal rst_gen_rst : std_ulogic;
|
||||
begin
|
||||
|
||||
-- Eventually dig out the frequency from
|
||||
-- litesdram generate.py sys_clk_freq
|
||||
-- but for now, assert it's 48Mhz for orangecrab
|
||||
assert CLK_FREQUENCY = 48000000;
|
||||
|
||||
reset_controller: entity work.soc_reset
|
||||
generic map(
|
||||
RESET_LOW => RESET_LOW,
|
||||
PLL_RESET_BITS => 18,
|
||||
SOC_RESET_BITS => 1
|
||||
)
|
||||
port map(
|
||||
ext_clk => ext_clk,
|
||||
pll_clk => system_clk,
|
||||
pll_locked_in => system_clk_locked,
|
||||
ext_rst_in => ext_rst_n,
|
||||
pll_rst_out => pll_rst,
|
||||
rst_out => rst_gen_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 => 24,
|
||||
DRAM_ALINES => 14,
|
||||
DRAM_DLINES => 16,
|
||||
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,
|
||||
core_alt_reset => core_alt_reset,
|
||||
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_cs_n => ddram_cs_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,
|
||||
|
||||
ddram_reset_n => ddram_reset_n
|
||||
);
|
||||
|
||||
ddram_gnd <= "00";
|
||||
-- for power consumption.
|
||||
-- https://github.com/orangecrab-fpga/orangecrab-hardware/issues/19#issuecomment-683479378
|
||||
ddram_vccio <= "111111";
|
||||
|
||||
led0_b_pwm <= not dram_init_done;
|
||||
led0_r_pwm <= dram_init_error;
|
||||
led0_g_pwm <= dram_init_done and not dram_init_error;
|
||||
|
||||
end generate;
|
||||
|
||||
|
||||
-- SD card pmod
|
||||
has_sdcard : if USE_LITESDCARD generate
|
||||
component litesdcard_core port (
|
||||
clk : in std_ulogic;
|
||||
rst : in 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;
|
||||
irq : 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,
|
||||
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,
|
||||
irq => ext_irq_sdcard
|
||||
);
|
||||
|
||||
-- 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(15 downto 2);
|
||||
|
||||
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_sdcard_out when wb_ext_is_sdcard = '1' else
|
||||
wb_dram_ctrl_out;
|
||||
|
||||
leds_pwm : process(system_clk)
|
||||
begin
|
||||
if rising_edge(system_clk) then
|
||||
pwm_counter <= std_ulogic_vector(signed(pwm_counter) + 1);
|
||||
if pwm_counter(8 downto 4) = "00000" then
|
||||
led0_b <= led0_b_pwm;
|
||||
led0_r <= led0_r_pwm;
|
||||
led0_g <= led0_g_pwm;
|
||||
else
|
||||
led0_b <= '0';
|
||||
led0_r <= '0';
|
||||
led0_g <= '0';
|
||||
end if;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
end architecture behaviour;
|
||||
Loading…
Reference in New Issue