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Clock gating logic for LEON3 processor.

the location of UARTs, timers, interrupt controller and ethernet core
using the plug&amp;play information. Full sources of kernel, libraries and tools available.</span></small></li>
  <li><small><span style="font-family: helvetica,arial,sans-serif;"><b>Bare-C</b>: a <a href="http://www.gaisler.com/doc/bcc.html">LEON3 bare-C compiler</a>
is available for download from gaisler.com. Come with full source code for both the
low-level I/O routines as well as the mkprom prom builder.</span></small></li>
  <li><small><span style="font-family: helvetica,arial,sans-serif;"><a href="http://sourceware.org/ecos/"><b>eCos</b></a>: a Leon3 port supporting FPU, SMP and single-vector trapping is available for ecos-current. Use Bare-C compiler to build.<br>
    </span></small></li>
  <li><small><span style="font-family: helvetica,arial,sans-serif;"><b>Linux</b>: a Leon3 port of uClinux and linux-2.6.11 is available in the <a href="http://www.gaisler.com/products/linux.html">snapgear
linux distribution</a>.</span></small></li>
</ul>
<small><span style="font-family: helvetica,arial,sans-serif;"></span></small>
<h4><small><span style="font-family: helvetica,arial,sans-serif;">Debugging<br>
</span></small></h4>

<small><span style="font-family: helvetica,arial,sans-serif;">The
on-chip debug support unit (DSU) makes debugging of target hardware
relatively easy. Both JTAG, serial (RS232) and ethernet-based debug links are
available, and can be used </span></small><small><span style="font-family: helvetica,arial,sans-serif;">download and debug
code. Debugging is controlled through the <a href="http://www.gaisler.com/products/grmon/grmon.html">GRMON debug
monitor</a>.</span></small><small><span style="font-family: helvetica,arial,sans-serif;"> A sample GRMON
session looks like this:<br>
<br style="font-family: courier new,courier,monospace;">
<span style="font-family: courier new,courier,monospace;">$ grmon
-grlib -i -u</span><br style="font-family: courier new,courier,monospace;">
<br style="font-family: courier new,courier,monospace;">
<span style="font-family: courier new,courier,monospace;">&nbsp;GRMON -
The LEON multi purpose monitor v1.0.6</span><br style="font-family: courier new,courier,monospace;">
<br style="font-family: courier new,courier,monospace;">
<span style="font-family: courier new,courier,monospace;">&nbsp;Copyright
(C) 2004, Gaisler Research - all rights reserved.</span><br style="font-family: courier new,courier,monospace;">
<span style="font-family: courier new,courier,monospace;">&nbsp;For
latest updates, go to http://www.gaisler.com/</span><br style="font-family: courier new,courier,monospace;">
<span style="font-family: courier new,courier,monospace;">&nbsp;Comments
or bug-reports to [e-mail]</span><br style="font-family: courier new,courier,monospace;">
<br style="font-family: courier new,courier,monospace;">
<br style="font-family: courier new,courier,monospace;">
<span style="font-family: courier new,courier,monospace;">&nbsp;GRLIB
DSU Monitor backend 1.0.1&nbsp; (professional version)</span><br style="font-family: courier new,courier,monospace;">
<span style="font-family: courier new,courier,monospace;">&nbsp;using
port /dev/ttyS0 @ 115200 baud</span><br style="font-family: courier new,courier,monospace;">
<br style="font-family: courier new,courier,monospace;">
<span style="font-family: courier new,courier,monospace;">&nbsp;initialising
...........</span><br style="font-family: courier new,courier,monospace;">
<br style="font-family: courier new,courier,monospace;">
<span style="font-family: courier new,courier,monospace;">&nbsp;Component&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
Vendor</span><br style="font-family: courier new,courier,monospace;">
<span style="font-family: courier new,courier,monospace;">&nbsp;Leon3
SPARC V8
Processor&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
Gaisler Research</span><br style="font-family: courier new,courier,monospace;">
<span style="font-family: courier new,courier,monospace;">&nbsp;AHB
Debug
UART&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
Gaisler Research</span><br style="font-family: courier new,courier,monospace;">
<span style="font-family: courier new,courier,monospace;">&nbsp;Simple
32-bit PCI
Target&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
Gaisler Research</span><br style="font-family: courier new,courier,monospace;">
<span style="font-family: courier new,courier,monospace;">&nbsp;10/100
Mbit Ethernet
MAC&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
Opencores</span><br style="font-family: courier new,courier,monospace;">
<span style="font-family: courier new,courier,monospace;">&nbsp;LEON2
Memory
Controller&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
European Space Agency</span><br style="font-family: courier new,courier,monospace;">
<span style="font-family: courier new,courier,monospace;">&nbsp;AHB/APB
Bridge&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
Gaisler Research</span><br style="font-family: courier new,courier,monospace;">
<span style="font-family: courier new,courier,monospace;">&nbsp;Leon3
Debug Support
Unit&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
Gaisler Research</span><br style="font-family: courier new,courier,monospace;">
<span style="font-family: courier new,courier,monospace;">&nbsp;10/100
Mbit Ethernet
MAC&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
Opencores</span><br style="font-family: courier new,courier,monospace;">
<span style="font-family: courier new,courier,monospace;">&nbsp;Generic
APB
UART&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
Gaisler Research</span><br style="font-family: courier new,courier,monospace;">
<span style="font-family: courier new,courier,monospace;">&nbsp;Multi-processor
Interrupt Ctrl&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Gaisler Research</span><br style="font-family: courier new,courier,monospace;">
<span style="font-family: courier new,courier,monospace;">&nbsp;Modular
Timer
Unit&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
Gaisler Research</span><br style="font-family: courier new,courier,monospace;">
<br style="font-family: courier new,courier,monospace;">
<span style="font-family: courier new,courier,monospace;">&nbsp;Use
command 'info sys' to print a detailed report of attached cores</span><br style="font-family: courier new,courier,monospace;">
<br style="font-family: courier new,courier,monospace;">
<span style="font-family: courier new,courier,monospace;">grmon[grlib]&gt;
info sys</span><br style="font-family: courier new,courier,monospace;">
<span style="font-family: courier new,courier,monospace;">00.01:003&nbsp;&nbsp;
Gaisler Research&nbsp; Leon3 SPARC V8 Processor (ver 0)</span><br style="font-family: courier new,courier,monospace;">
<span style="font-family: courier new,courier,monospace;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
ahb master 0</span><br style="font-family: courier new,courier,monospace;">
<span style="font-family: courier new,courier,monospace;">01.01:007&nbsp;&nbsp;
Gaisler Research&nbsp; AHB Debug UART (ver 0)</span><br style="font-family: courier new,courier,monospace;">
<span style="font-family: courier new,courier,monospace;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
ahb master 1</span><br style="font-family: courier new,courier,monospace;">
<span style="font-family: courier new,courier,monospace;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
apb: 80000700 - 80000800</span><br style="font-family: courier new,courier,monospace;">
<span style="font-family: courier new,courier,monospace;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
baud rate 115200, ahb frequency 25.00</span><br style="font-family: courier new,courier,monospace;">
<span style="font-family: courier new,courier,monospace;">02.01:012&nbsp;&nbsp;
Gaisler Research&nbsp; Simple 32-bit PCI Target (ver 0)</span><br style="font-family: courier new,courier,monospace;">
<span style="font-family: courier new,courier,monospace;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
ahb master 2</span><br style="font-family: courier new,courier,monospace;">
<span style="font-family: courier new,courier,monospace;">03.08:005&nbsp;&nbsp;
Opencores&nbsp; 10/100 Mbit Ethernet MAC (ver 0)</span><br style="font-family: courier new,courier,monospace;">
<span style="font-family: courier new,courier,monospace;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
ahb master 3</span><br style="font-family: courier new,courier,monospace;">
<span style="font-family: courier new,courier,monospace;">00.04:00f&nbsp;&nbsp;
European Space Agency&nbsp; LEON2 Memory Controller (ver 0)</span><br style="font-family: courier new,courier,monospace;">
<span style="font-family: courier new,courier,monospace;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
ahb: 00000000 - 20000000</span><br style="font-family: courier new,courier,monospace;">
<span style="font-family: courier new,courier,monospace;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
ahb: 20000000 - 40000000</span><br style="font-family: courier new,courier,monospace;">
<span style="font-family: courier new,courier,monospace;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
ahb: 40000000 - 80000000</span><br style="font-family: courier new,courier,monospace;">
<span style="font-family: courier new,courier,monospace;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
apb: 80000000 - 80000100</span><br style="font-family: courier new,courier,monospace;">
<span style="font-family: courier new,courier,monospace;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
32-bit sdram: 1 * 32 Mbyte @ 0x40000000, col 9, cas 2, ref 15.5 us</span><br style="font-family: courier new,courier,monospace;">
<span style="font-family: courier new,courier,monospace;">01.01:006&nbsp;&nbsp;
Gaisler Research&nbsp; AHB/APB Bridge (ver 0)</span><br style="font-family: courier new,courier,monospace;">
<span style="font-family: courier new,courier,monospace;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
ahb: 80000000 - 80100000</span><br style="font-family: courier new,courier,monospace;">
<span style="font-family: courier new,courier,monospace;">02.01:004&nbsp;&nbsp;
Gaisler Research&nbsp; Leon3 Debug Support Unit (ver 0)</span><br style="font-family: courier new,courier,monospace;">
<span style="font-family: courier new,courier,monospace;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
ahb: 90000000 - a0000000</span><br style="font-family: courier new,courier,monospace;">
<span style="font-family: courier new,courier,monospace;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
AHB trace 64 lines</span><br style="font-family: courier new,courier,monospace;">
<span style="font-family: courier new,courier,monospace;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
CPU#0 win 8, hw breakpoints 2, itrace 64 lines</span><br style="font-family: courier new,courier,monospace;">
<span style="font-family: courier new,courier,monospace;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
icache 1 * 4 kbyte, 32 byte/line</span><br style="font-family: courier new,courier,monospace;">
<span style="font-family: courier new,courier,monospace;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
dcache 1 * 4 kbyte, 32 byte/line</span><br style="font-family: courier new,courier,monospace;">
<span style="font-family: courier new,courier,monospace;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
stack pointer 0x41fffff0</span><br style="font-family: courier new,courier,monospace;">
<span style="font-family: courier new,courier,monospace;">05.08:005&nbsp;&nbsp;
Opencores&nbsp; 10/100 Mbit Ethernet MAC (ver 0)</span><br style="font-family: courier new,courier,monospace;">
<span style="font-family: courier new,courier,monospace;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
irq 12</span><br style="font-family: courier new,courier,monospace;">
<span style="font-family: courier new,courier,monospace;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
ahb: fffb0000 - fffb1000</span><br style="font-family: courier new,courier,monospace;">
<span style="font-family: courier new,courier,monospace;">01.01:00c&nbsp;&nbsp;
Gaisler Research&nbsp; Generic APB UART (ver 1)</span><br style="font-family: courier new,courier,monospace;">
<span style="font-family: courier new,courier,monospace;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
irq 2</span><br style="font-family: courier new,courier,monospace;">
<span style="font-family: courier new,courier,monospace;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
apb: 80000100 - 80000200</span><br style="font-family: courier new,courier,monospace;">
<span style="font-family: courier new,courier,monospace;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
baud rate 38400, DSU mode</span><br style="font-family: courier new,courier,monospace;">
<span style="font-family: courier new,courier,monospace;">02.01:00d&nbsp;&nbsp;
Gaisler Research&nbsp; Multi-processor Interrupt Ctrl (ver 1)</span><br style="font-family: courier new,courier,monospace;">
<span style="font-family: courier new,courier,monospace;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
apb: 80000200 - 80000300</span><br style="font-family: courier new,courier,monospace;">
<span style="font-family: courier new,courier,monospace;">03.01:011&nbsp;&nbsp;
Gaisler Research&nbsp; Modular Timer Unit (ver 0)</span><br style="font-family: courier new,courier,monospace;">
<span style="font-family: courier new,courier,monospace;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
irq 8</span><br style="font-family: courier new,courier,monospace;">
<span style="font-family: courier new,courier,monospace;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
apb: 80000300 - 80000400</span><br style="font-family: courier new,courier,monospace;">
<span style="font-family: courier new,courier,monospace;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
16-bit scaler, 2 * 32-bit timers, divisor 25</span><br style="font-family: courier new,courier,monospace;">
<span style="font-family: courier new,courier,monospace;">grmon[grlib]&gt;
lo /home/jiri/samples/stanford</span><br style="font-family: courier new,courier,monospace;">
<span style="font-family: courier new,courier,monospace;">section:
.text at 0x40000000, size 60688 bytes</span><br style="font-family: courier new,courier,monospace;">
<span style="font-family: courier new,courier,monospace;">section:
.data at 0x4000ed10, size 2080 bytes</span><br style="font-family: courier new,courier,monospace;">
<span style="font-family: courier new,courier,monospace;">section: .jcr
at 0x40026728, size 4 bytes</span><br style="font-family: courier new,courier,monospace;">
<span style="font-family: courier new,courier,monospace;">total size:
62772 bytes (94.3 kbit/s)</span><br style="font-family: courier new,courier,monospace;">
<span style="font-family: courier new,courier,monospace;">read 192
symbols</span><br style="font-family: courier new,courier,monospace;">
<span style="font-family: courier new,courier,monospace;">entry point:
0x40000000</span><br style="font-family: courier new,courier,monospace;">
<span style="font-family: courier new,courier,monospace;">grmon[grlib]&gt;
run</span><br style="font-family: courier new,courier,monospace;">
<span style="font-family: courier new,courier,monospace;">Starting</span><br style="font-family: courier new,courier,monospace;">
<span style="font-family: courier new,courier,monospace;">&nbsp;&nbsp;&nbsp;
Perm&nbsp; Towers&nbsp; Queens&nbsp;&nbsp;
Intmm&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Mm&nbsp; Puzzle&nbsp;&nbsp;
Quick&nbsp; Bubble&nbsp;&nbsp;&nbsp; Tree&nbsp;&nbsp;&nbsp;&nbsp; FFT</span><br style="font-family: courier new,courier,monospace;">
<span style="font-family: courier new,courier,monospace;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
67&nbsp;&nbsp;&nbsp;&nbsp; 100&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
67&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 67&nbsp;&nbsp;&nbsp;
2233&nbsp;&nbsp;&nbsp;&nbsp; 550&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
67&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 83&nbsp;&nbsp;&nbsp;&nbsp;
417&nbsp;&nbsp;&nbsp; 2650</span><br style="font-family: courier new,courier,monospace;">
<br style="font-family: courier new,courier,monospace;">
<span style="font-family: courier new,courier,monospace;">Nonfloating
point composite is&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 216</span><br style="font-family: courier new,courier,monospace;">
<br style="font-family: courier new,courier,monospace;">
<span style="font-family: courier new,courier,monospace;">Floating
point composite is&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 2044</span><br style="font-family: courier new,courier,monospace;">
<br style="font-family: courier new,courier,monospace;">
<span style="font-family: courier new,courier,monospace;">Program
exited normally.</span><br style="font-family: courier new,courier,monospace;">
<span style="font-family: courier new,courier,monospace;">grmon[grlib]&gt;</span><br>
<br>
<br>
The LEON3MP test bench includes memory models of both boot-prom, sram
and sdram. To build memory images for these models, do 'make soft' .
Note: this will require that the bare-C compiler for LEON3 is
installed,
and /opt/sparc-elf/bin is added to the PATH.<br>
<br>
<br>
<br>
</span></small>
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