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trabucayre / openFPGALoader

Universal utility for programming FPGA
https://trabucayre.github.io/openFPGALoader/
Apache License 2.0
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XC7A200 on TE0712: Boot from flash only after one time programming with Xilinx tools #464

Open UweBonnes opened 4 months ago

UweBonnes commented 4 months ago

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 commented 4 months ago

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 commented 4 months ago

Any news? Thanks

UweBonnes commented 4 months ago

Sorry, I am missing knowledge to answer you question. Are these settings related? 1:set_property BITSTREAM.GENERAL.COMPRESS TRUE [current_design] 2:set_property BITSTREAM.CONFIG.CONFIGRATE 66 [current_design] 6:set_property BITSTREAM.CONFIG.SPI_32BIT_ADDR YES [current_design] 7:set_property BITSTREAM.CONFIG.SPI_BUSWIDTH 4 [current_design] 8:set_property BITSTREAM.CONFIG.UNUSEDPIN PULLDOWN [current_design]

trabucayre commented 3 months ago

Sorry for the delay. According to the configuration the bitstream is read in quad mode. So if the flash chip is not configured to support this mode, loading the file will fails. Could you check your flash configuration (openFPGALoader may do that with -f --detect.

UweBonnes commented 3 months ago

This is the flash after one time Xilinx programming and then multiple times openFPGALoader programming:> ~/devel/openFPGALoader/build/openFPGALoader -b te0712_8 -f --detect empty write to flash No cable or board specified: using direct ft2232 interface Jtag frequency : requested 15.00MHz -> real 15.00MHz protect_flash: use: /usr/local/share/openFPGALoader/spiOverJtag_xc7a200tfbg484.bit.gz load program Load SRAM: [==================================================] 100.00% Done Shift IR 35 ir: 1 isc_done 1 isc_ena 0 init 1 done 1 JEDEC ID: 0x010219 Detected: spansion S25FL256S 512 sectors size: 256Mb RDSR : 0x00 WIP : 0 WEL : 0 BP : 0 TB : 0 SRWD : 0

Configuration Register RDCR : 02 FREEZE : 0 QUAD : 1 TBPARM : 0 BPNV : 0 TBPROT : 0 Done

"QUAD :1" seems to be loaded. Can openFPGALoader set it? A grep through the code did not ring a bell for me.

trabucayre commented 3 months ago

Currently the only modification applied by openFPGALoader is about protection. Enabling/disabling quad mode isn't supported (but it's possible to integrate this option).

UweBonnes commented 8 hours ago

Should this be fixed by faa1fc76fcf "core,xilinx,device: added option/methods to enable/disable quad mode on SPI Flash"?