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zynq-7000 software training - lab 2 experiment 2

moshek over 8 years ago

The student is asked to review the zynqHW hardware Platform Specification, then calculate the size of the QSPI Flash memory.

According to the address map, there are 0x1000000 addresses mapped to this memory, or 16 M addresses.

What I don't follow is why (according to the solution) each address represents 8 bits of data, making the mapped Flash space 128 Mbit.

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0 zedhed over 8 years ago

Hi moshek,

I assume that you are asking about ZedBoard QSPI memory here, please correct me if you are asking about another board:

Take a look at this other thread here where there is an explanation of how to access the entire 256Mbit of QSPI flash even through the upper 128Mbits are not directly accessible through the Zynq QSPI memory map:

http://zedboard.org/content/qspi-size-limit-type-zynq

Best Regards,

-Kevin
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0 zedhed over 8 years ago

Hi moshek,

I assume that you are asking about ZedBoard QSPI memory here, please correct me if you are asking about another board:

Take a look at this other thread here where there is an explanation of how to access the entire 256Mbit of QSPI flash even through the upper 128Mbits are not directly accessible through the Zynq QSPI memory map:

http://zedboard.org/content/qspi-size-limit-type-zynq

Best Regards,

-Kevin
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