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PicoZed 7020 QSPI boot problem

Former Member

Hi,

I have PicoZed 7020 and connected it to the carrier bord. I wrote a simple bare-metal application which sends data from UART port and toggle PS user led pin according to the state of the PS user push button.

When I run the code from JTAG no problem, works correctly. Then I create boot image and download the .mcs file to the flash. I changed boot switchs to qspi flash boot. However when I give the power to the board, blue led turns on as expected, but the program did not run. Dont send data to UART port or toggle user led when I push the user button.

I created MicroZed version of the project and it boots and run correctly from qspi flash. But I was not able to do the same with PicoZed board.

I tried different PicoZed boards and programs. None of them run correctly.

Is there sth. different in PicoZed QSPI flash boot procedure than the MicroZed?

Thanks in advance,

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  • 0 in reply to qyl_qiyalu

    I think SDN was a typo. Should have been CDN, which is Card Detect. SDIO1 is connected to eMMC, so that should have no bearing on whether the QSPI will boot, unless you have specifically set up the QSPI to pull a boot image from eMMC.

     

    Connecting the SDIO1 controller's CDN pin to GND to simulate a physical Card Detect was a workaround required prior to 2015.2. Since that time, it is no longer required for booting Linux.

     

    Bryan

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