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XC7A200 on TE0712: Boot from flash only after one time programming with Xilinx tools #464

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UweBonnes opened this issue Jun 21, 2024 · 2 comments

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@UweBonnes
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I got new TE0712 modules. On a working setup, I replaced an old programmed modules with the new module. I could load the bitfile to FPGA, and the board worked as expected until reboot/repower. Then I wrote the binfile to flash. It compared okay. But the module, more exactly both modules i bought, did not boot from flash, neither by reset or repower.

To get the module bootable, I needed to use the Xilinix programmer once to program the flash. After the one-time xilinx programming, I can erase and reprogram flash and the setup boots from flash as expected.

Any ideas what openFPGAloader is missing on a virgin setup of FPGA/Flash to get flash bootable?

@trabucayre
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Is your bitstream is configured in quad spi mode? If so, maybe the SPI flash has quad mode disabled?
I have observed this situation after a wrong status register write where the quad enable bit was unset.

@trabucayre
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Any news? Thanks

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