com.xilinx.rapidwright.util

Class ReplaceFrameData

Object

com.xilinx.rapidwright.util.ReplaceFrameData

public class ReplaceFrameData
extends Object

Replace or extract a section of a partial bitstream to be used in another bitstream. One use case is to extract a "NO OP" bitstream of a hard block column. The "NO OP" can be later used to replace the section in a relocated bitstream. A particular example is a design with 3 PR regions on ZCU7. The 3 PR are align vertically to the right of the device. Most of the resource are the same among the PRs except one column where oen PR cover HDIO, another CONFIG and the other PCIE. A partial bitstream is generated (by Vivado) for the first PR and will later relocated to the other two PRs. The config bits over HDIO is not applicable to either CONFIG or PCIE, although it cause no harm in a short duration. It was observed that the config bits over CONFIG and PCIE are the same and in addition they are independent of a design. Thus, a partial bitstream can be written for a PR covering either of them so that a "NO OP" config bits can be extracted. The extracted bits is later used to replace corresponding bits in the bitstream generated with HDIO before subsequent relocation. In particular, the section covering a hard block column, eg., PCIE, that are

Constructor Summary

Constructors

Constructor and Description
ReplaceFrameData()

Method Summary

Modifier and Type	Method and Description
void	extract(Bitstream b, List<Integer> rows, List<Integer> cols) Extract "NO OP" bits from the given config rows and columns of the given bitstream.
void	extractForExamplePlatform(Bitstream b) Extract "NO OP" bits from the given bitstream according to the example platform.
void	incTemplateDataRowIndex(int inc) Increase row address of the "NO OP" bits by the number of row specified.
void	load(String filename) Load the "NO OP" frame data from a file.
static void	main(String[] args)
void	replace(Bitstream b, List<Integer> rows, List<Integer> cols) Replace "NO OP" bits to the given config rows and columns of the given bitstream.
void	replaceForExamplePlatform(Bitstream b) Replace "NO OP" bits on the bitstream according to the given example platform.
void	save(String filename) Save the "NO OP" frame data to a file

Methods inherited from class Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ReplaceFrameData

public ReplaceFrameData()

Method Detail

extractForExamplePlatform

public void extractForExamplePlatform(Bitstream b)

Extract "NO OP" bits from the given bitstream according to the example platform. The bits must be save to be later used in different sessions.

Parameters:

b - The bitstream to be replaced

replaceForExamplePlatform

public void replaceForExamplePlatform(Bitstream b)

Replace "NO OP" bits on the bitstream according to the given example platform. The bits must be save to be later used in different sessions.

Parameters:

b - The bitstream to be replaced

extract

public void extract(Bitstream b,
                    List<Integer> rows,
                    List<Integer> cols)

Extract "NO OP" bits from the given config rows and columns of the given bitstream. The bits must be save to be later used in different sessions.

Parameters:

b - The bitstream to be replaced

rows - The list of config rows

cols - The list of config cols

replace

public void replace(Bitstream b,
                    List<Integer> rows,
                    List<Integer> cols)

Replace "NO OP" bits to the given config rows and columns of the given bitstream. Assume that the bits is either extracted or loaded.

Parameters:

b - The bitstream to be replaced

rows - The list of config rows

cols - The list of config cols

save

public void save(String filename)

Save the "NO OP" frame data to a file

load

public void load(String filename)

Load the "NO OP" frame data from a file.

incTemplateDataRowIndex

public void incTemplateDataRowIndex(int inc)

Increase row address of the "NO OP" bits by the number of row specified.

Parameters:

inc - The number of rows to increment

main

public static void main(String[] args)