BRAM Standalone driver
Introduction
This page gives an overview of bram (block ram comtroller) driver which is available as part of the Xilinx Vivado and SDK distribution.Table of Contents
https://github.com/Xilinx/embeddedsw/tree/master/XilinxProcessorIPLib/drivers/bram
Driver source code is organized into different folders. Below diagram shows the bram driver source organization
bram
|
-- Doc - Provides the API and data structure details
|
- Examples - Reference application to show how to use the driver APIs and calling sequence
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- Source - Driver source files
Features Supported
Controller/Driver features supported
The Xilinx BRAM controller is a soft IP core designed for Xilinx FPGAs and contains the following general features,
- LMB v2.0 bus interfaces with byte enable support
- Separate read and write channel interfaces to utilize dual port FPGA BRAM technology
- Supports memory sizes up to a maximum of 2 MBytes
- Compatible with Xilinx AXI Interconnect
- Used in conjunction with bram_block peripheral to provide fast BRAM memory solution for MicroBlaze ILMB and DLMB ports
- Supports byte, half-word, and word transfers
- Supports optional BRAM error correction and detection
Known issues and Limitations
NoneTest cases
BRAM selftest example
https://github.com/Xilinx/embeddedsw/blob/master/XilinxProcessorIPLib/drivers/bram/examples/xbram_example.cThis example initializes ECC for BRAM and executes the selftest.
Output
| Code Block | ||
|---|---|---|
| ||
Successfully ran Bram Example |
BRAM interrupt example
https://github.com/Xilinx/embeddedsw/blob/master/XilinxProcessorIPLib/drivers/bram/examples/xbram_intr_example.cThis example configures interrupt for BRAM controller and evaluates triggering of interrupt through fault injection
Output
| Code Block | ||
|---|---|---|
| ||
Successfully ran Bram Interrupt Example |
Changelog
2020.2
- bram: Modify Makefile to support parallel make execution
- Makefile: Remove realpath command
2020.1
- Fixed the warnings reported by ARMCC compiler
2019.2
- No changes
2017.4
- No Changes
2017.3
- Updated bram.tcl to add U suffix for all the macros exported into xparameters.h
- Fixed compilation warnings in the driver