7i90 flashing

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01 Mar 2017 06:02 #88796 by phillc54
phillc54 created the topic: 7i90 flashing
Am I correct in thinking I could boot up then move W3 to Secondary, add a jumper to W4 then flash a parallel bitfile.
Remove W4, move W3 to Primary then powercycle board.
Flash a epp bitfile then powercyle board.
This would then give me the option of using parallel or epp depending on the position of W3 at boot.

Cheers, Phill.
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01 Mar 2017 09:52 #88800 by PCW
PCW replied the topic: 7i90 flashing
A couple things:

There is only one parallel interface (EPP)

current 7I90HD firmware options are
EPP_hm2
serial_hm2
spi_hm2
sserial remote

W4 does nothing currently as there is no Mesaflash support for setting WP areas in the flash chip

You can have 2 different configs loaded and select from them by moving W3, just make sure you leave
at least one config as EPP or SPI as these are the only ones supported by mesaflash
(and make sure you have a working mesaflash SPI host before setting both configs to SPI)
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01 Mar 2017 21:12 #88845 by phillc54
phillc54 replied the topic: 7i90 flashing
Oops, I should have read my post again before submitting.

Where I said parallel I should have said epp and wher I said epp I should have said spi.

I think I meant:

Am I correct in thinking I could boot up then move W3 to Secondary, add a jumper to W4 then flash a EPP bitfile.
Remove W4, move W3 to Primary then powercycle board.
Flash a spi bitfile then powercyle board.
This would then give me the option of using epp or spi depending on the position of W3 at boot.
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01 Mar 2017 21:35 - 01 Mar 2017 21:35 #88848 by PCW
PCW replied the topic: 7i90 flashing
Yes you can,
but as I mentioned before, W4 does nothing currently
W3 basically just selects between two EEPROM chips
so yes if you have a EPP primary and want to write a new SPI secondary over EPP, you would

1. Power up 7I90 with W3 in primary position (loading EPP config)
2. Move W3 to secondary position (with power on)
3. Run EPP mesaflash to write SPI config to secondary EEPROM
Last Edit: 01 Mar 2017 21:35 by PCW.
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