boot from SDIO-1

Hello folks u2013

I posted this question on Xilinx website but have not heard anything so far - so I'm reaching out to the collective knowledge of Zedboard community for some guidance.

I developed a custom Zynq board (using Z-7020) that includes both QSPI Flash and SD memory. It is very similar to MicroZed - however due to the use of dual USBs - microSD card is attached to SDIO-1 port. I know from Zynq TRM that only SDIO-0 (not SDIO-1) could be used for first stage booting.

My question is have you guys managed to boot Linux image (image.ub for Petalinux) from SDIO-1 after loading the FSBL/bitstream/U-Boot from QSPI Flash?

In my case u2013 I managed to boot FSBL/Bitstream and U-Boot from QSPI Flash u2013 but when I do u201Crun sdbootu201D in U-Boot u2013 the system hangs up and never responds. I monitored the SDIO signals with a o-scope but there is nothing. Any feedback/guidance is appreciated.

Thanks.
Ted

0 bhfletcher over 9 years ago

Ted,

We have not attempted to run secondary boot from SDIO-1. However, that should definitely be possible. Have you made any progress since this original post? Do you see any activity on the SDIO-1 lines at all?

Bryan
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0 Former Member over 9 years ago

>> My question is have you guys managed to boot Linux image (image.ub for Petalinux) from SDIO-1 after loading the FSBL/bitstream/U-Boot from QSPI Flash?

Yes, I have. It's working fine.

Do you have correctly configured the U-Boot? There is a definition in u-boot env that configure SD.

u-boot-xlnx/include/configs/zynq_microzed.h

In this file defined to use SD0: #define CONFIG_ZYNQ_SDHCI0
You need tochange this define to: #define CONFIG_ZYNQ_SDHCI1

and then "make zynq_microzed"
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