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Enable a bunch of PicoRV32 features in PicoSoC

This commit is contained in:
Clifford Wolf 2017-09-22 04:52:44 +02:00
parent 1c889ee3b5
commit 694b9390fd
6 changed files with 139 additions and 23 deletions
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2
picosoc/Makefile
View File

@ -36,7 +36,7 @@ hx8kprog_fw: firmware.bin
# ---- Example Firmware ----
firmware.elf: sections.lds start.s firmware.c
riscv32-unknown-elf-gcc -Wl,-Bstatic,-T,sections.lds,--strip-debug -ffreestanding -nostdlib -o firmware.elf start.s firmware.c
riscv32-unknown-elf-gcc -march=rv32imc -Wl,-Bstatic,-T,sections.lds,--strip-debug -ffreestanding -nostdlib -o firmware.elf start.s firmware.c
firmware.hex: firmware.elf
riscv32-unknown-elf-objcopy -O verilog firmware.elf /dev/stdout | sed -e '1 s/@00000000/@00100000/; 2,65537 d;' > firmware.hex

27
picosoc/firmware.c
View File

@ -179,7 +179,7 @@ void cmd_read_flash_regs()
// --------------------------------------------------------
uint32_t cmd_benchmark(bool verbose)
uint32_t cmd_benchmark(bool verbose, uint32_t *instns_p)
{
uint8_t data[256];
uint32_t *words = (void*)data;
@ -231,6 +231,9 @@ uint32_t cmd_benchmark(bool verbose)
putchar('\n');
}
if (instns_p)
*instns_p = instns_end - instns_begin;
return cycles_end - cycles_begin;
}
@ -238,10 +241,12 @@ uint32_t cmd_benchmark(bool verbose)
void cmd_benchmark_all()
{
uint32_t instns = 0;
print("default ");
reg_spictrl = (reg_spictrl & ~0x00700000) | 0x00000000;
print(": ");
print_hex(cmd_benchmark(false), 8);
print_hex(cmd_benchmark(false, &instns), 8);
putchar('\n');
for (int i = 8; i > 0; i--)
@ -254,7 +259,7 @@ void cmd_benchmark_all()
reg_spictrl = (reg_spictrl & ~0x00700000) | 0x00400000;
print(": ");
print_hex(cmd_benchmark(false), 8);
print_hex(cmd_benchmark(false, &instns), 8);
putchar('\n');
}
@ -268,7 +273,7 @@ void cmd_benchmark_all()
reg_spictrl = (reg_spictrl & ~0x00700000) | 0x00500000;
print(": ");
print_hex(cmd_benchmark(false), 8);
print_hex(cmd_benchmark(false, &instns), 8);
putchar('\n');
}
@ -282,7 +287,7 @@ void cmd_benchmark_all()
reg_spictrl = (reg_spictrl & ~0x00700000) | 0x00200000;
print(": ");
print_hex(cmd_benchmark(false), 8);
print_hex(cmd_benchmark(false, &instns), 8);
putchar('\n');
}
@ -296,7 +301,7 @@ void cmd_benchmark_all()
reg_spictrl = (reg_spictrl & ~0x00700000) | 0x00300000;
print(": ");
print_hex(cmd_benchmark(false), 8);
print_hex(cmd_benchmark(false, &instns), 8);
putchar('\n');
}
@ -310,7 +315,7 @@ void cmd_benchmark_all()
reg_spictrl = (reg_spictrl & ~0x00700000) | 0x00600000;
print(": ");
print_hex(cmd_benchmark(false), 8);
print_hex(cmd_benchmark(false, &instns), 8);
putchar('\n');
}
@ -324,9 +329,13 @@ void cmd_benchmark_all()
reg_spictrl = (reg_spictrl & ~0x00700000) | 0x00700000;
print(": ");
print_hex(cmd_benchmark(false), 8);
print_hex(cmd_benchmark(false, &instns), 8);
putchar('\n');
}
print("instns : ");
print_hex(instns, 8);
putchar('\n');
}
// --------------------------------------------------------
@ -419,7 +428,7 @@ void main()
reg_spictrl = reg_spictrl ^ 0x00100000;
break;
case '9':
cmd_benchmark(true);
cmd_benchmark(true, 0);
break;
case '0':
cmd_benchmark_all();

4
picosoc/hx8kdemo.v
View File

@ -115,6 +115,10 @@ module hx8kdemo (
.flash_io2_di (flash_io2_di),
.flash_io3_di (flash_io3_di),
.irq_5 (1'b0 ),
.irq_6 (1'b0 ),
.irq_7 (1'b0 ),
.iomem_valid (iomem_valid ),
.iomem_ready (iomem_ready ),
.iomem_wstrb (iomem_wstrb ),

BIN
picosoc/performance.png
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98
picosoc/performance.py
View File

@ -3,7 +3,7 @@
import matplotlib.pyplot as plt
import numpy as np
text = """
uncompr_text = """
default : 010f52ef
dspi-8 : 008dc82f
dspi-7 : 008d6d63
@ -53,32 +53,110 @@ qspi-ddr-crm-4 : 00244a65
qspi-ddr-crm-3 : 0023ef99
qspi-ddr-crm-2 : 002394cd
qspi-ddr-crm-1 : 00233a01
instns : 0003df2d
"""
compr_text = """
default : 00f3d36d
dspi-8 : 008008ad
dspi-7 : 007fade1
dspi-6 : 007f5315
dspi-5 : 007ef849
dspi-4 : 007e9d7d
dspi-3 : 007e42b1
dspi-2 : 007de7e5
dspi-1 : 007d8d19
dspi-crm-8 : 007d324d
dspi-crm-7 : 007cd781
dspi-crm-6 : 007c7cb5
dspi-crm-5 : 007c21e9
dspi-crm-4 : 007bc71d
dspi-crm-3 : 007b6c51
dspi-crm-2 : 007b1185
dspi-crm-1 : 007ab6b9
qspi-8 : 00434ced
qspi-7 : 0042f221
qspi-6 : 00429755
qspi-5 : 00423c89
qspi-4 : 0041e1bd
qspi-3 : 004186f1
qspi-2 : 00412c25
qspi-1 : 0040d159
qspi-crm-8 : 0040768d
qspi-crm-7 : 00401bc1
qspi-crm-6 : 003fc0f5
qspi-crm-5 : 003f6629
qspi-crm-4 : 003f0b5d
qspi-crm-3 : 003eb091
qspi-crm-2 : 003e55c5
qspi-crm-1 : 003dfaf9
qspi-ddr-8 : 00255d87
qspi-ddr-7 : 002502bb
qspi-ddr-6 : 0024a7ef
qspi-ddr-5 : 00244d23
qspi-ddr-4 : 0023f257
qspi-ddr-3 : 0023978b
qspi-ddr-2 : 00233cbf
qspi-ddr-1 : 0022e1f3
qspi-ddr-crm-8 : 00228727
qspi-ddr-crm-7 : 00222c5b
qspi-ddr-crm-6 : 0021d18f
qspi-ddr-crm-5 : 002176c3
qspi-ddr-crm-4 : 00211bf7
qspi-ddr-crm-3 : 0020c12b
qspi-ddr-crm-2 : 0020665f
qspi-ddr-crm-1 : 00200b93
instns : 0003df2d
"""
labels = list()
values = list()
uncompr_values = list()
compr_values = list()
for line in text.split("\n"):
for line in uncompr_text.split("\n"):
if line != "":
line = line.split()
if line[0] == "instns":
for i in range(len(uncompr_values)):
uncompr_values[i] = int(line[2], 16) / uncompr_values[i]
else:
labels.append(line[0])
values.append(int(line[2], 16))
uncompr_values.append(int(line[2], 16))
for line in compr_text.split("\n"):
if line != "":
line = line.split()
if line[0] == "instns":
for i in range(len(compr_values)):
compr_values[i] = int(line[2], 16) / compr_values[i]
else:
compr_values.append(int(line[2], 16))
print(np.array(compr_values) / np.array(uncompr_values))
values = list()
for i in range(len(compr_values)):
values.append(uncompr_values[i] / uncompr_values[0])
# values.append(compr_values[i] / compr_values[0])
values = np.array(values)
print(values)
plt.figure(figsize=(10, 5))
plt.title("Performance comparison for different PicoSoC SPI flash configurations")
plt.plot(range(len(labels)), values[0] / np.array(values))
plt.plot(range(len(labels)), values)
plt.xticks(range(len(labels)), labels, rotation=80)
for color, x1, x2 in [["black", 0, 0], ["red", 1, 8], ["green", 9, 16],
["red", 17, 24], ["green", 25, 32], ["red", 33, 40], ["green", 41, 48]]:
for t in plt.axes().xaxis.get_ticklabels()[x1:x2+1]:
t.set_color(color)
plt.plot([x1, x1], [0, values[0] / values[x1] - 0.2], color=color)
plt.plot([x2, x2], [0, values[0] / values[x2] - 0.2], color=color)
plt.plot([x1], [values[0] / values[x1]], "k.")
plt.plot([x2], [values[0] / values[x2]], "k.")
plt.plot([x1, x1], [0, values[x1] - 0.2], color=color)
plt.plot([x2, x2], [0, values[x2] - 0.2], color=color)
plt.plot([x1], [values[x1]], "k.")
plt.plot([x2], [values[x2]], "k.")
plt.xlim(-1, len(values))
plt.xlim(-1, len(labels))
plt.ylim(0, 9)
plt.grid()

29
picosoc/picosoc.v
View File

@ -28,6 +28,10 @@ module picosoc (
output [31:0] iomem_wdata,
input [31:0] iomem_rdata,
input irq_5,
input irq_6,
input irq_7,
output ser_tx,
input ser_rx,
@ -53,6 +57,19 @@ module picosoc (
parameter [31:0] STACKADDR = (4*MEM_WORDS); // end of memory
parameter [31:0] PROGADDR_RESET = 32'h 0010_0000; // 1 MB into flash
reg [31:0] irq;
wire irq_stall = 0;
wire irq_uart = 0;
always @* begin
irq = 0;
irq[3] = irq_stall;
irq[4] = irq_uart;
irq[5] = irq_5;
irq[6] = irq_6;
irq[7] = irq_7;
end
wire mem_valid;
wire mem_instr;
wire mem_ready;
@ -91,7 +108,14 @@ module picosoc (
picorv32 #(
.STACKADDR(STACKADDR),
.PROGADDR_RESET(PROGADDR_RESET)
.PROGADDR_RESET(PROGADDR_RESET),
.PROGADDR_IRQ(32'h 0000_0000),
.BARREL_SHIFTER(1),
.COMPRESSED_ISA(1),
.ENABLE_MUL(1),
.ENABLE_DIV(1),
.ENABLE_IRQ(1),
.ENABLE_IRQ_QREGS(0)
) cpu (
.clk (clk ),
.resetn (resetn ),
@ -101,7 +125,8 @@ module picosoc (
.mem_addr (mem_addr ),
.mem_wdata (mem_wdata ),
.mem_wstrb (mem_wstrb ),
.mem_rdata (mem_rdata )
.mem_rdata (mem_rdata ),
.irq (irq )
);
spimemio spimemio (