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677 atlys: add 2-clock synchronizer chain for ddr2_calib_done

The signal ddr2_calib_done signal comes from the ddr2 clock domain,
while wb_req is treating it as if it came from wb_clk domain. As a
result the timing analysis tool assumed a worst case scenario of 5ns
between the two domains and the results were miserable.

While we can argue that this is a multi-cycle path, the fact is that
ddr2_calib_done feeds into multiple logic sinks and can potentially
cause meta-stability issue in the design. The solution is to add a
2-clock meta-stability filter to address both the timing problems and
the meta-stability concern.

Signed-off-by: Jason Zheng <jxzheng@gmail.com>
Signed-off-by: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi>
Acked-by: Olof Kindgren <olof.kindgren@orsoc.se>
stekern 4461d 20h /openrisc/trunk/orpsocv2/boards/
655 ORPSoC: add CFI flash controller to ml501, sw driver, tests, app, documentation julius 4583d 16h /openrisc/trunk/orpsocv2/boards/
652 Fix make compile.tcl for actel backend yannv 4591d 23h /openrisc/trunk/orpsocv2/boards/
638 orpsoc: xilinx: use XILINX env variable

instead of rely on custom environment variables,
use the XILINX variable and instruct the user how to
source the scripts that set it.

Signed-off-by: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi>
stekern 4638d 09h /openrisc/trunk/orpsocv2/boards/
634 orpsoc: atlys: autoregenerate coregen cores

Instead of keeping binary .ngc files of the coregen
generated cores, use coregen to generate them from the .xco
and .cgp file
stekern 4643d 09h /openrisc/trunk/orpsocv2/boards/
633 orpsoc: add Digilent Atlys spartan6 board README

Signed-off-by: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi>
stekern 4643d 09h /openrisc/trunk/orpsocv2/boards/
632 orpsoc: add Digilent Atlys spartan6 board sw include file

Signed-off-by: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi>
stekern 4643d 09h /openrisc/trunk/orpsocv2/boards/
631 orpsoc: add Digilent Atlys spartan6 board testbench

Signed-off-by: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi>
stekern 4643d 09h /openrisc/trunk/orpsocv2/boards/
630 orpsoc: add Digilent Atlys spartan6 board backend

Signed-off-by: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi>
stekern 4643d 09h /openrisc/trunk/orpsocv2/boards/
629 orpsoc: add Digilent Atlys spartan6 board or1ksim configuration

Signed-off-by: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi>
stekern 4643d 09h /openrisc/trunk/orpsocv2/boards/
628 orpsoc: add Digilent Atlys spartan6 board Makefiles

Signed-off-by: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi>
stekern 4643d 09h /openrisc/trunk/orpsocv2/boards/
627 orpsoc: add Digilent Atlys spartan6 board rtl

Signed-off-by: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi>
stekern 4643d 09h /openrisc/trunk/orpsocv2/boards/
568 OPRSoC - adding Xilinx Xtreme DSP Spartan-3A 1800A board port and documentation julius 4696d 02h /openrisc/trunk/orpsocv2/boards/
563 Search for external cores in <board>/modules path olof 4708d 15h /openrisc/trunk/orpsocv2/boards/
560 ORPSoC update - update make scripts, XILINX_PATH setup changes.

Note - may require a change to XILINX_PATH on user systems.
julius 4716d 14h /openrisc/trunk/orpsocv2/boards/
544 ORPSoC ordb1a3pe1500 update - adding SD card controller. julius 4734d 03h /openrisc/trunk/orpsocv2/boards/
542 ORPSoC scripts cleanup. Now centralised.

Documentation updated for ml501's SPI programming, noting issues with ISE12.
julius 4739d 17h /openrisc/trunk/orpsocv2/boards/
530 ORPSoC update

Ethernet MAC Wishbone interface fixes

Beginnings of software update.

ML501 backend script fixes for new ISE
julius 4763d 03h /openrisc/trunk/orpsocv2/boards/
503 ORPSoC's or1200 defines fix to indicate we don't actually have I/DMMU invalidate registers. julius 4806d 14h /openrisc/trunk/orpsocv2/boards/
502 ORPSoC update - or1200, ethmac Xilinx fifos
or1200 in ORPSoC has carry bit, overflow bit, and range exception added and tested. New software tests in ORPSoC library. Ml501 build had ethmac fifos added, and or1200_defines updated to use these new or1200 features by default
julius 4808d 18h /openrisc/trunk/orpsocv2/boards/

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