On 27.09.2018 22:34, Nico Huber wrote:
On 9/27/18 10:11 PM, ron minnich wrote:
yeah, also is there a programmer you recommend for 32MiB parts?
Any programmer that can handle arbitrary SPI commands, e.g. single- board computers with native SPI interface (RPi, BeagleBone Black etc.), CH341A is popular but slow, FTDI based programmers are faster (FT232H/ FT2232H/FT4232H), serprog programmers (some may not be too slow), Bus- Pirate rather slow too.
If you want programming to be fast (almost on par with Dediprog): Either Raspberry Pi or Beaglebone Black.
The Beaglebone Black has an abysmal internal power supply and for any in-circuit flashing you'll need an additional 3.3V supply for the flash chip. For standalone chips it usually is sufficient, though.
The Raspberry Pi has SPI disabled by default, you need to add dtparam=spi=on to the file /boot/config.txt .
On Thu, Sep 27, 2018 at 1:10 PM Nico Huber email@example.com wrote:
Ah, dediprog... you happen to have the one programmer that is hard to support.
On 9/27/18 9:49 PM, ron minnich wrote:
hmm, is this useful?
Found Spansion flash chip "S25FL256S......0" (32768 kB, SPI) on dediprog. Erasing and writing flash chip... 4-byte address requested but master
handle 4-byte addresses.
That is expected, native 4-byte instructions are tried first but they are not implemented yet for dediprog. It should fall back to another instruction though. Unless the dediprog resets the chip between in- structions, it should actually work. Though, David seemed to have trouble with that too, I didn't test it myself yet.
Looking for another erase function.
Can you please just post the whole log (best taken with -o logfile).
Got the fix. I used dpcmd to update the firmware on the FS100 to 5.5.3
Then flashrom can program it with ease.
And, ironically, while dpcmd can update the firmware, it still can't flash the part :-)