[ZYNQ] Invalidating a specific area of data cache without flushing its content

• embeddedsw

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  Xilinx Embedded Software (embeddedsw) Development

  

I'm currently working on a project using the Zynq-7000 SoC. We have a custom DMA IP in PL to provide faster transactions between peripherals and main memory. The peripherals are generally serial devices such as UART. The data received by the serial device is transferred immediately to the main memory by DMA. What I try to do is to reach the data stored at a pre-determined location of the memory. Before reading the data, I invalidate the related cache lines using a function provided by xil_cache.h library as below.

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