saji/groovylight
1
0
Fork 0
generated from saji/ecp5-template
Code Actions Packages Releases Wiki Activity

checkin
Some checks failed
Verilator Unit Tests / Test (push) Failing after 3m57s
Details

Browse source
This commit is contained in:
saji 2024-09-03 11:15:59 -05:00
parent d42e227c4d
commit 7a4de2e02d
4 changed files with 134 additions and 126 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

1
sim/CMakeLists.txt
View file

@ -88,6 +88,7 @@ target_link_libraries(sim PUBLIC imgui)
# SIM TEST
add_executable(sim_test)
target_sources(sim_test PRIVATE

35
src/groovylight/sdram.py
View file

@ -13,20 +13,25 @@ from amaranth.lib.wiring import In, Out
# word size = 32
# 8 megabytes data.
sdram_control_layout = data.StructLayout(
{
"nCS": 1,
"nRAS": 1,
"nCAS": 1,
"nWE": 1,
}
)
class SDRAMSignature(wiring.Signature):
""" Signature of a variable-size sdram. Data is split between in/out and has out_en"""
def __init__(self, addr_width, data_width=32, bank_width=2):
super().__init__({
"nCS": Out(1),
"cke": Out(1),
"nRAS": Out(1),
"nCAS": Out(1),
"nWE": Out(1),
"addr": Out(addr_width),
"data_out": Out(data_width),
"data_in": In(data_width),
# todo: use dqm
"data_wren": Out(1),
"bank_cs": Out(bank_width),
})
class _WriteBurstLength(enum.Enum, shape=1):
"""MRS field"""
"""MRS Write burst mode"""
BURST = 0
SINGLE_BIT = 1
@ -52,7 +57,7 @@ class _BurstLength(enum.IntEnum, shape=3):
DUAL = 1
QUAD = 2
OCT = 3
FULL_PAGE = 7
FULL_PAGE = 7 # this is 256 words?
class _Command(enum.Enum):
@ -68,3 +73,7 @@ class _Command(enum.Enum):
NOP = 8
class BankController(wiring.Component):
"""Manages a single Bank. Has a bank locking/state tracker,
can issue commands"""

214
verilog/lineram.v
View file

@ -8,116 +8,114 @@ module lineram (
input write_clk
);
`ifdef YOSYS
// use the ECP5 primitive.
PDPW16KD #(.REGMODE("OUTREG")) ram (
.DI0 (din[0]),
.DI1 (din[1]),
.DI2 (din[2]),
.DI3 (din[3]),
.DI4 (din[4]),
.DI5 (din[5]),
.DI6 (din[6]),
.DI7 (din[7]),
.DI8 (din[8]),
.DI9 (din[9]),
.DI10(din[10]),
.DI11(din[11]),
.DI12(din[12]),
.DI13(din[13]),
.DI14(din[14]),
.DI15(din[15]),
.DI16(din[16]),
.DI17(din[17]),
.DI18(din[18]),
.DI19(din[19]),
.DI20(din[20]),
.DI21(din[21]),
.DI22(din[22]),
.DI23(din[23]),
.DI24(din[24]),
.DI25(din[25]),
.DI26(din[26]),
.DI27(din[27]),
.DI28(din[28]),
.DI29(din[29]),
.DI30(din[30]),
.DI31(din[31]),
.DI32(din[32]),
.DI33(din[33]),
.DI34(din[34]),
.DI35(din[35]),
.ADW0(addr_w[0]),
.ADW1(addr_w[1]),
.ADW2(addr_w[2]),
.ADW3(addr_w[3]),
.ADW4(addr_w[4]),
.ADW5(addr_w[5]),
.ADW6(addr_w[6]),
.ADW7(addr_w[7]),
.ADW8(addr_w[8]),
.DO0 (dout[0]),
.DO1 (dout[1]),
.DO2 (dout[2]),
.DO3 (dout[3]),
.DO4 (dout[4]),
.DO5 (dout[5]),
.DO6 (dout[6]),
.DO7 (dout[7]),
.DO8 (dout[8]),
.DO9 (dout[9]),
.DO10(dout[10]),
.DO11(dout[11]),
.DO12(dout[12]),
.DO13(dout[13]),
.DO14(dout[14]),
.DO15(dout[15]),
.DO16(dout[16]),
.DO17(dout[17]),
.DO18(dout[18]),
.DO19(dout[19]),
.DO20(dout[20]),
.DO21(dout[21]),
.DO22(dout[22]),
.DO23(dout[23]),
.DO24(dout[24]),
.DO25(dout[25]),
.DO26(dout[26]),
.DO27(dout[27]),
.DO28(dout[28]),
.DO29(dout[29]),
.DO30(dout[30]),
.DO31(dout[31]),
.DO32(dout[32]),
.DO33(dout[33]),
.DO34(dout[34]),
.DO35(dout[35]),
.ADR0(addr_r[0]),
.ADR1(addr_r[1]),
.ADR2(addr_r[2]),
.ADR3(addr_r[3]),
.ADR4(addr_r[4]),
.ADR5(addr_r[5]),
.ADR6(addr_r[6]),
.ADR7(addr_r[7]),
.ADR8(addr_r[8]),
.CER(1),
.CEW(1),
.CLKR(read_clk),
.CLKW(write_clk),
.CSW1(0),
.CSW2(0),
.CSW3(0),
.CSR1(0),
.CSR2(0),
.CSR3(0),
);
`else
reg [35:0] ram [2**9]/*verilator public*/;
// `ifdef YOSYS
// // use the ECP5 primitive.
// PDPW16KD #(.REGMODE("OUTREG")) ram (
// .DI0 (din[0]),
// .DI1 (din[1]),
// .DI2 (din[2]),
// .DI3 (din[3]),
// .DI4 (din[4]),
// .DI5 (din[5]),
// .DI6 (din[6]),
// .DI7 (din[7]),
// .DI8 (din[8]),
// .DI9 (din[9]),
// .DI10(din[10]),
// .DI11(din[11]),
// .DI12(din[12]),
// .DI13(din[13]),
// .DI14(din[14]),
// .DI15(din[15]),
// .DI16(din[16]),
// .DI17(din[17]),
// .DI18(din[18]),
// .DI19(din[19]),
// .DI20(din[20]),
// .DI21(din[21]),
// .DI22(din[22]),
// .DI23(din[23]),
// .DI24(din[24]),
// .DI25(din[25]),
// .DI26(din[26]),
// .DI27(din[27]),
// .DI28(din[28]),
// .DI29(din[29]),
// .DI30(din[30]),
// .DI31(din[31]),
// .DI32(din[32]),
// .DI33(din[33]),
// .DI34(din[34]),
// .DI35(din[35]),
// .ADW0(addr_w[0]),
// .ADW1(addr_w[1]),
// .ADW2(addr_w[2]),
// .ADW3(addr_w[3]),
// .ADW4(addr_w[4]),
// .ADW5(addr_w[5]),
// .ADW6(addr_w[6]),
// .ADW7(addr_w[7]),
// .ADW8(addr_w[8]),
// .DO0 (dout[0]),
// .DO1 (dout[1]),
// .DO2 (dout[2]),
// .DO3 (dout[3]),
// .DO4 (dout[4]),
// .DO5 (dout[5]),
// .DO6 (dout[6]),
// .DO7 (dout[7]),
// .DO8 (dout[8]),
// .DO9 (dout[9]),
// .DO10(dout[10]),
// .DO11(dout[11]),
// .DO12(dout[12]),
// .DO13(dout[13]),
// .DO14(dout[14]),
// .DO15(dout[15]),
// .DO16(dout[16]),
// .DO17(dout[17]),
// .DO18(dout[18]),
// .DO19(dout[19]),
// .DO20(dout[20]),
// .DO21(dout[21]),
// .DO22(dout[22]),
// .DO23(dout[23]),
// .DO24(dout[24]),
// .DO25(dout[25]),
// .DO26(dout[26]),
// .DO27(dout[27]),
// .DO28(dout[28]),
// .DO29(dout[29]),
// .DO30(dout[30]),
// .DO31(dout[31]),
// .DO32(dout[32]),
// .DO33(dout[33]),
// .DO34(dout[34]),
// .DO35(dout[35]),
// .ADR0(addr_r[0]),
// .ADR1(addr_r[1]),
// .ADR2(addr_r[2]),
// .ADR3(addr_r[3]),
// .ADR4(addr_r[4]),
// .ADR5(addr_r[5]),
// .ADR6(addr_r[6]),
// .ADR7(addr_r[7]),
// .ADR8(addr_r[8]),
// .CER(1),
// .CEW(1),
// .CLKR(read_clk),
// .CLKW(write_clk),
// .CSW1(0),
// .CSW2(0),
// .CSR1(0),
// .CSR2(0),
// );
// `else
reg [35:0] ram [512]/*verilator public*/;
`ifndef YOSYS
initial begin
for (integer i = 0; i < 2 ** 9; i = i + 1) begin
for (integer i = 0; i < 512; i = i + 1) begin
ram[i] = 0;
end
end
@ -129,5 +127,5 @@ module lineram (
always @(posedge read_clk) begin
dout <= ram[addr_r];
end
`endif
// `endif
endmodule