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< span id = "python-interface-to-coriolis" > < / span > < h1 > Python Interface for < span class = "sc" > Hurricane< / span > / < span class = "sc" > Coriolis< / span > < a class = "headerlink" href = "#python-interface-for-hurricane-coriolis" title = "Permalink to this headline" > ¶< / a > < / h1 >
< p > The (almost) complete interface of < span class = "sc" > Hurricane< / span > is exported as a < span class = "sc" > Python< / span > module
and some part of the other components of < span class = "sc" > Coriolis< / span > (each one in a separate
module). The interface has been made to mirror as closely as possible the
C++ one, so the C++ doxygen documentation could be used to write code with
either languages.< / p >
< p > < a class = "reference external" href = "file:../../../index.html" > Summary of the C++ Documentation< / a > < / p >
< p > A script could be run directly in text mode from the command line or through
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the graphical interface (see < a class = "reference internal" href = "ViewerTools.html#python-scripts-in-cgt" > < span class = "std std-ref" > Executing Python Scripts in Cgt< / span > < / a > ).< / p >
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< p > Asides for this requirement, the python script can contain anything valid
in < span class = "sc" > Python< / span > , so don’ t hesitate to use any package or extention.< / p >
< p > Small example of Python/Stratus script:< / p >
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< div class = "highlight-default" > < div class = "highlight" > < pre > < span > < / span > < span class = "kn" > from< / span > < span class = "nn" > Hurricane< / span > < span class = "k" > import< / span > < span class = "o" > *< / span >
< span class = "kn" > from< / span > < span class = "nn" > Stratus< / span > < span class = "k" > import< / span > < span class = "o" > *< / span >
< span class = "k" > def< / span > < span class = "nf" > doSomething< / span > < span class = "p" > ():< / span >
< span class = "c1" > # ...< / span >
< span class = "k" > return< / span >
< span class = "k" > def< / span > < span class = "nf" > ScriptMain< / span > < span class = "p" > (< / span > < span class = "o" > **< / span > < span class = "n" > kw< / span > < span class = "p" > ):< / span >
< span class = "n" > editor< / span > < span class = "o" > =< / span > < span class = "kc" > None< / span >
< span class = "k" > if< / span > < span class = "n" > kw< / span > < span class = "o" > .< / span > < span class = "n" > has_key< / span > < span class = "p" > (< / span > < span class = "s1" > ' editor' < / span > < span class = "p" > )< / span > < span class = "ow" > and< / span > < span class = "n" > kw< / span > < span class = "p" > [< / span > < span class = "s1" > ' editor' < / span > < span class = "p" > ]:< / span >
< span class = "n" > editor< / span > < span class = "o" > =< / span > < span class = "n" > kw< / span > < span class = "p" > [< / span > < span class = "s1" > ' editor' < / span > < span class = "p" > ]< / span >
< span class = "n" > stratus< / span > < span class = "o" > .< / span > < span class = "n" > setEditor< / span > < span class = "p" > (< / span > < span class = "n" > editor< / span > < span class = "p" > )< / span >
< span class = "n" > doSomething< / span > < span class = "p" > ()< / span >
< span class = "k" > return< / span >
< span class = "k" > if< / span > < span class = "n" > __name__< / span > < span class = "o" > ==< / span > < span class = "s2" > " __main__" < / span > < span class = "p" > :< / span >
< span class = "n" > kw< / span > < span class = "o" > =< / span > < span class = "p" > {}< / span >
< span class = "n" > success< / span > < span class = "o" > =< / span > < span class = "n" > ScriptMain< / span > < span class = "p" > (< / span > < span class = "o" > **< / span > < span class = "n" > kw< / span > < span class = "p" > )< / span >
< span class = "n" > shellSuccess< / span > < span class = "o" > =< / span > < span class = "mi" > 0< / span >
< span class = "k" > if< / span > < span class = "ow" > not< / span > < span class = "n" > success< / span > < span class = "p" > :< / span > < span class = "n" > shellSuccess< / span > < span class = "o" > =< / span > < span class = "mi" > 1< / span >
< span class = "n" > sys< / span > < span class = "o" > .< / span > < span class = "n" > exit< / span > < span class = "p" > (< / span > < span class = "n" > shellSuccess< / span > < span class = "p" > )< / span >
< span class = "n" > ScriptMain< / span > < span class = "p" > ()< / span >
< / pre > < / div >
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< / div >
< p > This typical script can be executed in two ways:< / p >
< ol class = "arabic" >
< li > < p class = "first" > Run directly as a < span class = "sc" > Python< / span > script, thanks to the< / p >
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< div class = "highlight-default" > < div class = "highlight" > < pre > < span > < / span > < span class = "k" > if< / span > < span class = "n" > __name__< / span > < span class = "o" > ==< / span > < span class = "s2" > " __main__" < / span > < span class = "p" > :< / span >
< / pre > < / div >
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< / div >
< p > part (this is standart < span class = "sc" > Python< / span > ). It is a simple adapter that will
calls < span class = "cb" > ScriptMain()< / span > .< / p >
< / li >
< li > < p class = "first" > Through < span class = "cb" > cgt< / span > , either in text or graphical mode. In that case, the
< span class = "cb" > ScriptMain()< / span > is directly called trough a sub-interpreter.
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The arguments of the script are passed through the < code class = "docutils literal" > < span class = "pre" > **kw< / span > < / code > dictionnary.< / p >
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< table border = "1" class = "docutils" >
< colgroup >
< col width = "32%" / >
< col width = "68%" / >
< / colgroup >
< thead valign = "bottom" >
< tr class = "row-odd" > < th class = "head" colspan = "2" > **kw Dictionnary< / th >
< / tr >
< tr class = "row-even" > < th class = "head" > Parameter Key/Name< / th >
< th class = "head" > Contents type< / th >
< / tr >
< / thead >
< tbody valign = "top" >
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< tr class = "row-odd" > < td > < code class = "docutils literal" > < span class = "pre" > 'cell'< / span > < / code > < / td >
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< td > A Hurricane cell on which to work. Depending
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on the context, it may be < code class = "docutils literal" > < span class = "pre" > None< / span > < / code > .
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For example, when run from < span class = "cb" > cgt< / span > , it the cell
currently loaded in the viewer, if any.< / td >
< / tr >
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< tr class = "row-even" > < td > < code class = "docutils literal" > < span class = "pre" > 'editor'< / span > < / code > < / td >
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< td > The viewer from which the script is run, when
lauched through < span class = "cb" > cgt< / span > .< / td >
< / tr >
< / tbody >
< / table >
< / li >
< / ol >
< div class = "section" id = "plugins" >
< h2 > Plugins< a class = "headerlink" href = "#plugins" title = "Permalink to this headline" > ¶< / a > < / h2 >
< p > Plugins are < span class = "sc" > Python< / span > scripts specially crafted to integrate with < span class = "cb" > cgt< / span > .
Their entry point is a < span class = "cb" > ScriptMain()< / span > method as described in
< a class = "reference internal" href = "#python-interface-to-coriolis" > Python Interface to Coriolis< / a > . They can be called by user scripts
through this method.< / p >
< div class = "section" id = "chip-placement" >
< h3 > Chip Placement< a class = "headerlink" href = "#chip-placement" title = "Permalink to this headline" > ¶< / a > < / h3 >
< p > Automatically perform the placement of a complete chip. This plugin, as well
as the other P& R tools expect a specific top-level hierarchy for the design.
The top-level hierarchy must contains the instances of all the I/O pads and
< strong > exactly one< / strong > instance of the chip’ s core model.< / p >
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< p > < a class = "reference internal" href = "../_images/chip-structure-1.png" > < img alt = "Chip Top Structure" class = "align-middle" src = "../_images/chip-structure-1.png" style = "width: 90%;" / > < / a > < / p >
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< p > The designer must provide a configuration file that define the rules for the
placement of the top-level hierarchy (that is, the pads and the core).
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This file must be named after the chip’ s name, by appending < code class = "docutils literal" > < span class = "pre" > _chip.py< / span > < / code >
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(obviously, it is a < span class = "sc" > Python< / span > file). For instance if the chip netlist file
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is called < code class = "docutils literal" > < span class = "pre" > amd2901_crl.vst< / span > < / code > , then the configuration file must be named
< code class = "docutils literal" > < span class = "pre" > amd2901_crl_chip.vst< / span > < / code > .< / p >
< p > Example of chip placement configuration file (for < code class = "docutils literal" > < span class = "pre" > AM2901< / span > < / code > ):< / p >
< div class = "highlight-default" > < div class = "highlight" > < pre > < span > < / span > < span class = "n" > chip< / span > < span class = "o" > =< / span > \
< span class = "p" > {< / span > < span class = "s1" > ' pads.south' < / span > < span class = "p" > :< / span > < span class = "p" > [< / span > < span class = "s1" > ' p_a3' < / span > < span class = "p" > ,< / span > < span class = "s1" > ' p_a2' < / span > < span class = "p" > ,< / span > < span class = "s1" > ' p_a1' < / span > < span class = "p" > ,< / span > < span class = "s1" > ' p_r0' < / span >
< span class = "p" > ,< / span > < span class = "s1" > ' p_vddick0' < / span > < span class = "p" > ,< / span > < span class = "s1" > ' p_vssick0' < / span > < span class = "p" > ,< / span > < span class = "s1" > ' p_a0' < / span > < span class = "p" > ,< / span > < span class = "s1" > ' p_i6' < / span >
< span class = "p" > ,< / span > < span class = "s1" > ' p_i8' < / span > < span class = "p" > ,< / span > < span class = "s1" > ' p_i7' < / span > < span class = "p" > ,< / span > < span class = "s1" > ' p_r3' < / span > < span class = "p" > ]< / span >
< span class = "p" > ,< / span > < span class = "s1" > ' pads.east' < / span > < span class = "p" > :< / span > < span class = "p" > [< / span > < span class = "s1" > ' p_zero' < / span > < span class = "p" > ,< / span > < span class = "s1" > ' p_i0' < / span > < span class = "p" > ,< / span > < span class = "s1" > ' p_i1' < / span > < span class = "p" > ,< / span > < span class = "s1" > ' p_i2' < / span >
< span class = "p" > ,< / span > < span class = "s1" > ' p_vddeck0' < / span > < span class = "p" > ,< / span > < span class = "s1" > ' p_vsseck0' < / span > < span class = "p" > ,< / span > < span class = "s1" > ' p_q3' < / span > < span class = "p" > ,< / span > < span class = "s1" > ' p_b0' < / span >
< span class = "p" > ,< / span > < span class = "s1" > ' p_b1' < / span > < span class = "p" > ,< / span > < span class = "s1" > ' p_b2' < / span > < span class = "p" > ,< / span > < span class = "s1" > ' p_b3' < / span > < span class = "p" > ]< / span >
< span class = "p" > ,< / span > < span class = "s1" > ' pads.north' < / span > < span class = "p" > :< / span > < span class = "p" > [< / span > < span class = "s1" > ' p_noe' < / span > < span class = "p" > ,< / span > < span class = "s1" > ' p_y3' < / span > < span class = "p" > ,< / span > < span class = "s1" > ' p_y2' < / span > < span class = "p" > ,< / span > < span class = "s1" > ' p_y1' < / span >
< span class = "p" > ,< / span > < span class = "s1" > ' p_y0' < / span > < span class = "p" > ,< / span > < span class = "s1" > ' p_vddeck1' < / span > < span class = "p" > ,< / span > < span class = "s1" > ' p_vsseck1' < / span > < span class = "p" > ,< / span > < span class = "s1" > ' p_np' < / span >
< span class = "p" > ,< / span > < span class = "s1" > ' p_ovr' < / span > < span class = "p" > ,< / span > < span class = "s1" > ' p_cout' < / span > < span class = "p" > ,< / span > < span class = "s1" > ' p_ng' < / span > < span class = "p" > ]< / span >
< span class = "p" > ,< / span > < span class = "s1" > ' pads.west' < / span > < span class = "p" > :< / span > < span class = "p" > [< / span > < span class = "s1" > ' p_cin' < / span > < span class = "p" > ,< / span > < span class = "s1" > ' p_i4' < / span > < span class = "p" > ,< / span > < span class = "s1" > ' p_i5' < / span > < span class = "p" > ,< / span > < span class = "s1" > ' p_i3' < / span >
< span class = "p" > ,< / span > < span class = "s1" > ' p_ck' < / span > < span class = "p" > ,< / span > < span class = "s1" > ' p_d0' < / span > < span class = "p" > ,< / span > < span class = "s1" > ' p_d1' < / span > < span class = "p" > ,< / span > < span class = "s1" > ' p_d2' < / span >
< span class = "p" > ,< / span > < span class = "s1" > ' p_d3' < / span > < span class = "p" > ,< / span > < span class = "s1" > ' p_q0' < / span > < span class = "p" > ,< / span > < span class = "s1" > ' p_f3' < / span > < span class = "p" > ]< / span >
< span class = "p" > ,< / span > < span class = "s1" > ' core.size' < / span > < span class = "p" > :< / span > < span class = "p" > (< / span > < span class = "mi" > 1500< / span > < span class = "p" > ,< / span > < span class = "mi" > 1500< / span > < span class = "p" > )< / span >
< span class = "p" > ,< / span > < span class = "s1" > ' chip.size' < / span > < span class = "p" > :< / span > < span class = "p" > (< / span > < span class = "mi" > 3000< / span > < span class = "p" > ,< / span > < span class = "mi" > 3000< / span > < span class = "p" > )< / span >
< span class = "p" > ,< / span > < span class = "s1" > ' chip.clockTree' < / span > < span class = "p" > :< / span > < span class = "kc" > True< / span >
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< span class = "p" > }< / span >
< / pre > < / div >
< / div >
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< p > The file must contain < em > one dictionnary< / em > named < code class = "docutils literal" > < span class = "pre" > chip< / span > < / code > .< / p >
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< table border = "1" class = "docutils" >
< colgroup >
< col width = "29%" / >
< col width = "71%" / >
< / colgroup >
< thead valign = "bottom" >
< tr class = "row-odd" > < th class = "head" colspan = "2" > Chip Dictionnary< / th >
< / tr >
< tr class = "row-even" > < th class = "head" > Parameter Key/Name< / th >
< th class = "head" > Value/Contents type< / th >
< / tr >
< / thead >
< tbody valign = "top" >
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< tr class = "row-odd" > < td > < code class = "docutils literal" > < span class = "pre" > 'pad.south'< / span > < / code > < / td >
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< td > Ordered list (left to right) of pad instances names
to put on the south side of the chip< / td >
< / tr >
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< tr class = "row-even" > < td > < code class = "docutils literal" > < span class = "pre" > 'pad.east'< / span > < / code > < / td >
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< td > Ordered list (down to up) of pad instances names
to put on the east side of the chip< / td >
< / tr >
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< tr class = "row-odd" > < td > < code class = "docutils literal" > < span class = "pre" > 'pad.north'< / span > < / code > < / td >
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< td > Ordered list (left to right) of pad instances names
to put on the north side of the chip< / td >
< / tr >
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< tr class = "row-even" > < td > < code class = "docutils literal" > < span class = "pre" > 'pad.west'< / span > < / code > < / td >
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< td > Ordered list (down to up) of pad instances names
to put on the west side of the chip< / td >
< / tr >
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< tr class = "row-odd" > < td > < code class = "docutils literal" > < span class = "pre" > 'core.size'< / span > < / code > < / td >
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< td > The size of the core (to be used by the placer)< / td >
< / tr >
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< tr class = "row-even" > < td > < code class = "docutils literal" > < span class = "pre" > 'chip.size'< / span > < / code > < / td >
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< td > The size of the whole chip. The sides must be great
enough to accomodate all the pads< / td >
< / tr >
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< tr class = "row-odd" > < td > < code class = "docutils literal" > < span class = "pre" > 'chip.clockTree'< / span > < / code > < / td >
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< td > Whether to generate a clock tree or not. This calls
the ClockTree plugin< / td >
< / tr >
< / tbody >
< / table >
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< p > Configuration parameters, defaults are defined in < code class = "docutils literal" > < span class = "pre" > etc/coriolis2/< STECHNO> /plugins.conf< / span > < / code > .< / p >
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< table border = "1" class = "docutils" >
< colgroup >
< col width = "43%" / >
< col width = "22%" / >
< col width = "35%" / >
< / colgroup >
< thead valign = "bottom" >
< tr class = "row-odd" > < th class = "head" > Parameter Identifier< / th >
< th class = "head" > Type< / th >
< th class = "head" > Default< / th >
< / tr >
< / thead >
< tbody valign = "top" >
< tr class = "row-even" > < td colspan = "3" > < strong > Chip Plugin Parameters< / strong > < / td >
< / tr >
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< tr class = "row-odd" > < td rowspan = "2" > < code class = "docutils literal" > < span class = "pre" > chip.block.rails.count< / span > < / code > < / td >
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< td > TypeInt< / td >
< td > < span class = "cb" > 5< / span > < / td >
< / tr >
< tr class = "row-even" > < td colspan = "2" > The minimum number of rails around the core
block. Must be odd and suppérior to 5.
One rail for the clock and at least two pairs
of power/grounds< / td >
< / tr >
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< tr class = "row-odd" > < td rowspan = "2" > < code class = "docutils literal" > < span class = "pre" > chip.block.rails.hWidth< / span > < / code > < / td >
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< td > TypeInt< / td >
< td > < span class = "cb" > 12< / span > < / td >
< / tr >
< tr class = "row-even" > < td colspan = "2" > The horizontal with of the rails< / td >
< / tr >
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< tr class = "row-odd" > < td rowspan = "2" > < code class = "docutils literal" > < span class = "pre" > chip.block.rails.vWidth< / span > < / code > < / td >
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< td > TypeInt< / td >
< td > < span class = "cb" > 12< / span > < / td >
< / tr >
< tr class = "row-even" > < td colspan = "2" > The vertical with of the rails< / td >
< / tr >
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< tr class = "row-odd" > < td rowspan = "2" > < code class = "docutils literal" > < span class = "pre" > chip.block.rails.hSpacing< / span > < / code > < / td >
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< td > TypeInt< / td >
< td > < span class = "cb" > 6< / span > < / td >
< / tr >
< tr class = "row-even" > < td colspan = "2" > The spacing, < em > edge to edge< / em > of two adjacent
horizontal rails< / td >
< / tr >
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< tr class = "row-odd" > < td rowspan = "2" > < code class = "docutils literal" > < span class = "pre" > chip.block.rails.vSpacing< / span > < / code > < / td >
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< td > TypeInt< / td >
< td > < span class = "cb" > 6< / span > < / td >
< / tr >
< tr class = "row-even" > < td colspan = "2" > The spacing, < em > edge to edge< / em > of two adjacent
vertical rails< / td >
< / tr >
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< tr class = "row-odd" > < td rowspan = "2" > < code class = "docutils literal" > < span class = "pre" > chip.pad.pck< / span > < / code > < / td >
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< td > TypeString< / td >
< td > < span class = "cb" > pck_px< / span > < / td >
< / tr >
< tr class = "row-even" > < td colspan = "2" > The model name of the pad connected to the
chip external clock< / td >
< / tr >
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< tr class = "row-odd" > < td rowspan = "2" > < code class = "docutils literal" > < span class = "pre" > chip.pad.pvddeck< / span > < / code > < / td >
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< td > TypeString< / td >
< td > < span class = "cb" > pvddeck_px< / span > < / td >
< / tr >
< tr class = "row-even" > < td colspan = "2" > The model name of the pad connected to the
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< code class = "docutils literal" > < span class = "pre" > vdde< / span > < / code > (external power) and suppling it to
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the core< / td >
< / tr >
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< tr class = "row-odd" > < td rowspan = "2" > < code class = "docutils literal" > < span class = "pre" > chip.pad.pvsseck< / span > < / code > < / td >
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< td > TypeString< / td >
< td > < span class = "cb" > pvsseck_px< / span > < / td >
< / tr >
< tr class = "row-even" > < td colspan = "2" > The model name of the pad connected to the
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< code class = "docutils literal" > < span class = "pre" > vsse< / span > < / code > (external ground) and suppling it to
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the core< / td >
< / tr >
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< tr class = "row-odd" > < td rowspan = "2" > < code class = "docutils literal" > < span class = "pre" > chip.pad.pvddick< / span > < / code > < / td >
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< td > TypeString< / td >
< td > < span class = "cb" > pvddick_px< / span > < / td >
< / tr >
< tr class = "row-even" > < td colspan = "2" > The model name of the pad connected to the
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< code class = "docutils literal" > < span class = "pre" > vddi< / span > < / code > (internal power) and suppling it to
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the core< / td >
< / tr >
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< tr class = "row-odd" > < td rowspan = "2" > < code class = "docutils literal" > < span class = "pre" > chip.pad.pvssick< / span > < / code > < / td >
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< td > TypeString< / td >
< td > < span class = "cb" > pvssick_px< / span > < / td >
< / tr >
< tr class = "row-even" > < td colspan = "2" > The model name of the pad connected to the
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< code class = "docutils literal" > < span class = "pre" > vssi< / span > < / code > (internal ground) and suppling it to
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the core< / td >
< / tr >
< / tbody >
< / table >
< div class = "admonition note" >
< p class = "first admonition-title" > Note< / p >
< p class = "last" > If no clock tree is generated, then the clock rail is < em > not< / em > created.
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So even if the requested number of rails < code class = "docutils literal" > < span class = "pre" > chip.block.rails.count< / span > < / code > is, say 5,
only four rails (2* < code class = "docutils literal" > < span class = "pre" > power< / span > < / code > , 2* < code class = "docutils literal" > < span class = "pre" > ground< / span > < / code > ) will be generateds.< / p >
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< / div >
< / div >
< div class = "section" id = "clock-tree" >
< h3 > Clock Tree< a class = "headerlink" href = "#clock-tree" title = "Permalink to this headline" > ¶< / a > < / h3 >
< p > Insert a clock tree into a block. The clock tree uses the H strategy.
The clock net is splitted into sub-nets, one for each branch of the
tree.< / p >
< ul >
< li > < p class = "first" > On < strong > chips< / strong > design, the sub-nets are createds in the model of the
core block (then trans-hierarchically flattened to be shown at
chip level).< / p >
< / li >
< li > < p class = "first" > On < strong > blocks< / strong > , the sub nets are created directly in the top block.< / p >
< / li >
< li > < p class = "first" > The sub-nets are named according to a simple geometrical scheme.
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A common prefix < code class = "docutils literal" > < span class = "pre" > ck_htree< / span > < / code > , then one postfix by level telling
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on which quarter of plane the sub-clock is located:< / p >
< ol class = "arabic simple" >
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< li > < code class = "docutils literal" > < span class = "pre" > _bl< / span > < / code > : bottom left plane quarter.< / li >
< li > < code class = "docutils literal" > < span class = "pre" > _br< / span > < / code > : bottom right plane quarter.< / li >
< li > < code class = "docutils literal" > < span class = "pre" > _tl< / span > < / code > : top left plane quarter.< / li >
< li > < code class = "docutils literal" > < span class = "pre" > _tr< / span > < / code > : top right plane quarter.< / li >
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< / ol >
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< p > We can have < code class = "docutils literal" > < span class = "pre" > ck_htree_bl< / span > < / code > , < code class = "docutils literal" > < span class = "pre" > ck_htree_bl_bl< / span > < / code > , < code class = "docutils literal" > < span class = "pre" > ch_htree_bl_tl< / span > < / code > and so on.< / p >
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< / li >
< / ul >
< p > The clock tree plugin works in four steps:< / p >
< ol class = "arabic simple" >
< li > Build the clock tree: creates the top-block abutment box, compute the
levels of H tree neededs and place the clock buffers.< / li >
< li > Once the clock buffers are placed, calls the placer (< span class = "sc" > Etesian< / span > ) to place
the ordinary standart cells, whithout disturbing clock H-tree buffers.< / li >
< li > At this point we know the exact positions of all the DFFs, so we can
connect them to the nearest H-tree leaf clock signal.< / li >
< li > Leaf clock signals that are not connecteds to any DFFs are removed.< / li >
< / ol >
< p > Netlist reorganisation:< / p >
< ul class = "simple" >
< li > Obviously the top block or chip core model netlist is modificated to
contains all the clock sub-nets. The interface is < em > not< / em > changed.< / li >
< li > If the top block contains instances of other models < em > and< / em > those models
contains DFFs that get re-connecteds to the clock sub-nets (from the
top level). Change both the model netlist and interface to propagate
the relevant clock sub-nets to the instanciated model. The new model
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with the added clock signal is renamed with a < code class = "docutils literal" > < span class = "pre" > _clocked< / span > < / code > suffix.
For example, the sub-block model < code class = "docutils literal" > < span class = "pre" > ram.vst< / span > < / code > will become < code class = "docutils literal" > < span class = "pre" > ram_clocked.vst< / span > < / code > .< / li >
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< / ul >
< div class = "admonition note" >
< p class = "first admonition-title" > Note< / p >
< p class = "last" > If you are to re-run the clock tree plugin on a netlist, be careful
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to erase any previously generated < code class = "docutils literal" > < span class = "pre" > _clocked< / span > < / code > file (both netlist and
layout: < code class = "docutils literal" > < span class = "pre" > rm< / span > < span class = "pre" > *.clocked.{ap,vst}< / span > < / code > ). And restart < span class = "cb" > cgt< / span > to clear it’ s
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memory cache.< / p >
< / div >
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< p > Configuration parameters, defaults are defined in < code class = "docutils literal" > < span class = "pre" > etc/coriolis2/< STECHNO> /plugins.conf< / span > < / code > .< / p >
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< table border = "1" class = "docutils" >
< colgroup >
< col width = "43%" / >
< col width = "22%" / >
< col width = "35%" / >
< / colgroup >
< thead valign = "bottom" >
< tr class = "row-odd" > < th class = "head" > Parameter Identifier< / th >
< th class = "head" > Type< / th >
< th class = "head" > Default< / th >
< / tr >
< / thead >
< tbody valign = "top" >
< tr class = "row-even" > < td colspan = "3" > < strong > ClockTree Plugin Parameters< / strong > < / td >
< / tr >
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< tr class = "row-odd" > < td rowspan = "2" > < code class = "docutils literal" > < span class = "pre" > clockTree.minimumSide< / span > < / code > < / td >
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< td > TypeInt< / td >
< td > < span class = "cb" > 300< / span > < / td >
< / tr >
< tr class = "row-even" > < td colspan = "2" > The minimum size below which the clock tree
will stop to perform quadri-partitions< / td >
< / tr >
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< tr class = "row-odd" > < td rowspan = "2" > < code class = "docutils literal" > < span class = "pre" > clockTree.buffer< / span > < / code > < / td >
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< td > TypeString< / td >
< td > < span class = "cb" > buf_x2< / span > < / td >
< / tr >
< tr class = "row-even" > < td colspan = "2" > The buffer model to use to drive sub-nets< / td >
< / tr >
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< tr class = "row-odd" > < td rowspan = "2" > < code class = "docutils literal" > < span class = "pre" > clockTree.placerEngine< / span > < / code > < / td >
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< td > TypeString< / td >
< td > < span class = "cb" > Etesian< / span > < / td >
< / tr >
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< tr class = "row-even" > < td colspan = "2" > The placer to use. Other value is < code class = "docutils literal" > < span class = "pre" > Mauka< / span > < / code >
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the simulated annealing placer which will go
into retirement very soon< / td >
< / tr >
< / tbody >
< / table >
< / div >
< div class = "section" id = "recursive-save-rsave" >
< h3 > Recursive-Save (RSave)< a class = "headerlink" href = "#recursive-save-rsave" title = "Permalink to this headline" > ¶< / a > < / h3 >
< p > Perform a recursive top down save of all the models from the top cell
loaded in < span class = "cb" > cgt< / span > . Force a write of any non-terminal model. This plugin is used
by the clock tree plugin after the netlist clock sub-nets creation.< / p >
< / div >
< / div >
< div class = "section" id = "a-simple-example-am2901" >
< h2 > A Simple Example: AM2901< a class = "headerlink" href = "#a-simple-example-am2901" title = "Permalink to this headline" > ¶< / a > < / h2 >
< p > To illustrate the capabilities of < span class = "sc" > Coriolis< / span > tools and < span class = "sc" > Python< / span > scripting, a small
example, derived from the < span class = "sc" > Alliance< / span > < span class = "cb" > AM2901< / span > is supplied.< / p >
< p > This example contains only the synthetized netlists and the < span class = "cb" > doChip.py< / span > script
which perform the whole P& R of the design.< / p >
< p > You can generate the chip using one of the following method:< / p >
< ol class = "arabic" >
< li > < p class = "first" > < strong > Command line mode:< / strong > directly run the script:< / p >
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< div class = "highlight-default" > < div class = "highlight" > < pre > < span > < / span > < span class = "n" > dummy< / span > < span class = "nd" > @lepka< / span > < span class = "p" > :< / span > < span class = "n" > AM2901< / span > < span class = "o" > > < / span > < span class = "o" > ./< / span > < span class = "n" > doChip< / span > < span class = "o" > -< / span > < span class = "n" > V< / span > < span class = "o" > --< / span > < span class = "n" > cell< / span > < span class = "o" > =< / span > < span class = "n" > amd2901< / span >
< / pre > < / div >
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< / div >
< / li >
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< li > < p class = "first" > < strong > Graphic mode:< / strong > launch < span class = "cb" > cgt< / span > , load chip netlist < code class = "docutils literal" > < span class = "pre" > amd2901< / span > < / code > (the top cell)
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then run the < span class = "sc" > Python< / span > script < span class = "cb" > doChip.py< / span > .< / p >
< / li >
< / ol >
< div class = "admonition note" >
< p class = "first admonition-title" > Note< / p >
< p > Between two consecutive run, be sure to erase the netlist/layout generateds:< / p >
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< div class = "last highlight-default" > < div class = "highlight" > < pre > < span > < / span > < span class = "n" > dummy< / span > < span class = "nd" > @lepka< / span > < span class = "p" > :< / span > < span class = "n" > AM2901< / span > < span class = "o" > > < / span > < span class = "n" > rm< / span > < span class = "o" > *< / span > < span class = "n" > clocked< / span > < span class = "o" > *.< / span > < span class = "n" > vst< / span > < span class = "o" > *.< / span > < span class = "n" > ap< / span >
< / pre > < / div >
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