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This leon3 design is tailored to the Xilinx SP605 Spartan6 board
Simulation and synthesis
------------------------
The design uses the Xilinx MIG memory interface with an AHB-2.0
interface. The MIG source code cannot be distributed due to the
prohibitive Xilinx license, so the MIG must be re-generated with
coregen before simulation and synthesis can be done.
To generate the MIG and install tne Xilinx unisim simulation
library, do as follows:
make mig
make install-secureip
This will ONLY work with ISE-13.2 installed, and the XILINX variable
properly set in the shell. To synthesize the design, do
make ise
and then
make ise-prog-fpga
to program the FPGA.
Design specifics
----------------
* System reset is mapped to the CPU RESET button
* The AHB and processor is clocked by a 60 MHz clock, generated
from the 33 MHz SYSACE clock using a DCM. You can change the frequency
generation in the clocks menu of xconfig. The DDR3 (MIG) controller
runs at 667 MHz.
* The GRETH core is enabled and runs without problems at 100 Mbit.
Ethernet debug link is enabled and has IP 192.168.0.51.
1 Gbit operation is also possible (requires grlib com release),
uncomment related timing constraints in the leon3mp.ucf first.
* 16-bit flash prom can be read at address 0. It can be programmed
with GRMON version 1.1.16 or later.
* DDR3 is working with the provided Xilinx MIG DDR3 controller.
If you want to simulate this design, first install the secure
IP models with:
make install-secureip
Then rebuild the scripts and simulation model:
make distclean vsim
Modelsim v6.6e or newer is required to build the secure IP models.
Note that the regular leon3 test bench cannot be run in simulation
as the DDR3 model lacks data pre-load.
* The application UART1 is connected to the USB/UART connector
* The SVGA frame buffer uses a separate port on the DDR3 controller,
and therefore does not noticeably affect the performance of the processor.
Default output is analog VGA, to switch to DVI mode execute this
command in grmon:
i2c dvi init_l4itx_vga
* The JTAG DSU interface is enabled and accesible via the USB/JTAG port.
Start grmon with -xilusb to connect.
* Output from GRMON is:
$ grmon -xilusb -u
GRMON LEON debug monitor v1.1.51 professional version (debug)
Copyright (C) 2004-2011 Aeroflex Gaisler - all rights reserved.
For latest updates, go to http://www.gaisler.com/
Comments or bug-reports to support@gaisler.com
Xilinx cable: Cable type/rev : 0x3
JTAG chain: xc6slx45t xccace
GRLIB build version: 4111
initialising ...............
detected frequency: 50 MHz
SRAM waitstates: 1
Component Vendor
LEON3 SPARC V8 Processor Gaisler Research
AHB Debug JTAG TAP Gaisler Research
GR Ethernet MAC Gaisler Research
LEON2 Memory Controller European Space Agency
AHB/APB Bridge Gaisler Research
LEON3 Debug Support Unit Gaisler Research
Xilinx MIG DDR2 controller Gaisler Research
AHB/APB Bridge Gaisler Research
Generic APB UART Gaisler Research
Multi-processor Interrupt Ctrl Gaisler Research
Modular Timer Unit Gaisler Research
SVGA Controller Gaisler Research
AMBA Wrapper for OC I2C-master Gaisler Research
General purpose I/O port Gaisler Research
AHB status register Gaisler Research
Use command 'info sys' to print a detailed report of attached cores
grlib> inf sys
00.01:003 Gaisler Research LEON3 SPARC V8 Processor (ver 0x0)
ahb master 0
01.01:01c Gaisler Research AHB Debug JTAG TAP (ver 0x1)
ahb master 1
02.01:01d Gaisler Research GR Ethernet MAC (ver 0x0)
ahb master 2, irq 12
apb: 80000e00 - 80000f00
Device index: dev0
edcl ip 192.168.1.51, buffer 2 kbyte
00.04:00f European Space Agency LEON2 Memory Controller (ver 0x1)
ahb: 00000000 - 20000000
apb: 80000000 - 80000100
16-bit prom @ 0x00000000
01.01:006 Gaisler Research AHB/APB Bridge (ver 0x0)
ahb: 80000000 - 80100000
02.01:004 Gaisler Research LEON3 Debug Support Unit (ver 0x1)
ahb: 90000000 - a0000000
AHB trace 256 lines, 32-bit bus, stack pointer 0x47fffff0
CPU#0 win 8, hwbp 2, itrace 256, V8 mul/div, srmmu, lddel 1
icache 2 * 8 kbyte, 32 byte/line rnd
dcache 2 * 4 kbyte, 16 byte/line rnd
04.01:06b Gaisler Research Xilinx MIG DDR2 controller (ver 0x0)
ahb: 40000000 - 48000000
apb: 80100000 - 80100100
DDR2: 128 Mbyte
0d.01:006 Gaisler Research AHB/APB Bridge (ver 0x0)
ahb: 80100000 - 80200000
01.01:00c Gaisler Research Generic APB UART (ver 0x1)
irq 2
apb: 80000100 - 80000200
baud rate 38343, DSU mode (FIFO debug)
02.01:00d Gaisler Research Multi-processor Interrupt Ctrl (ver 0x3)
apb: 80000200 - 80000300
03.01:011 Gaisler Research Modular Timer Unit (ver 0x0)
irq 8
apb: 80000300 - 80000400
8-bit scaler, 2 * 32-bit timers, divisor 50
06.01:063 Gaisler Research SVGA Controller (ver 0x0)
apb: 80000600 - 80000700
clk0: 50.00 MHz
09.01:028 Gaisler Research AMBA Wrapper for OC I2C-master (ver 0x3)
irq 14
apb: 80000900 - 80000a00
0a.01:01a Gaisler Research General purpose I/O port (ver 0x1)
apb: 80000a00 - 80000b00
0f.01:052 Gaisler Research AHB status register (ver 0x0)
irq 7
apb: 80000f00 - 80001000
grlib> fla
Intel-style 16-bit flash on D[31:16]
Manuf. Intel
Device Strataflash P30
Device ID 02e44603e127ffff
User ID ffffffffffffffff
1 x 32 Mbyte = 32 Mbyte total @ 0x00000000
CFI info
flash family : 1
flash size : 256 Mbit
erase regions : 2
erase blocks : 259
write buffer : 1024 bytes
lock-down : yes
region 0 : 255 blocks of 128 Kbytes
region 1 : 4 blocks of 32 Kbytes
grlib> lo ~/ibm/src/bench/leonbench/coremark.exe
section: .text at 0x40000000, size 102544 bytes
section: .data at 0x40019090, size 2788 bytes
total size: 105332 bytes (1.2 Mbit/s)
read 272 symbols
entry point: 0x40000000
grlib> run
2K performance run parameters for coremark.
CoreMark Size : 666
Total ticks : 19945918
Total time (secs): 19.945918
Iterations/Sec : 100.271143
Iterations : 2000
Compiler version : GCC4.4.2
Compiler flags : -O3 -mv8 -funroll-loops -fgcse-sm -combine -DPERFORMANCE_RUN=1 -mcpu=v8 -msoft-float
Memory location : STACK
seedcrc : 0xe9f5
[0]crclist : 0xe714
[0]crcmatrix : 0x1fd7
[0]crcstate : 0x8e3a
[0]crcfinal : 0x4983
Correct operation validated. See readme.txt for run and reporting rules.
CoreMark 1.0 : 100.271143 / GCC4.4.2 -O3 -mv8 -funroll-loops -fgcse-sm -combine -DPERFORMANCE_RUN=1 -mcpu=v8 -msoft-float / Stack
Program exited normally.
grlib>