[flashrom] Some test with arduino/serprog and different chips

Stefan Tauner stefan.tauner at alumni.tuwien.ac.at
Fri May 2 00:05:02 CEST 2014


On Tue, 22 Oct 2013 13:41:42 +0200
Raven <originalraven at hotmail.com> wrote:

> Hello,
> i made some test with the arduino/serprog and some different flash-chips:
> 
> *M25P16* -> all ok (erase and write has status "untested" but works ok!)

added

> *M25P40* -> all ok
> *W25X40* -> all ok

were already marked ok

> *25F512* -> erase not working, always same error:
> /flashrom v0.9.7-r1757 on Linux 3.10-2-amd64 (x86_64)//
> //flashrom is free software, get the source code at
> http://www.flashrom.org//
> //
> //flashrom was built with libpci 3.2.0, GCC 4.7.3, little endian//
> //Command line (5 args): ./flashrom -p serprog:dev=/dev/ttyACM0:2000000
> -c AT25F512 -VE//
> //Calibrating delay loop... OS timer resolution is 1 usecs, 1290M loops
> per second, 10 myus = 9 us, 100 myus = 111 us, 1000 myus = 1120 us,
> 10000 myus = 9990 us, 4 myus = 5 us, OK.//
> //Initializing serprog programmer//
> //Baud rate is 2000000 now.//
> //serprog: connected - attempting to synchronize//
> //...//
> //serprog: Synchronized//
> //serprog: Interface version ok.//
> //serprog: Bus support: parallel=off, LPC=off, FWH=off, SPI=on//
> //Warning: Automatic command availability check failed for cmd 0x08 -
> won't execute cmd//
> //Warning: Automatic command availability check failed for cmd 0x11 -
> won't execute cmd//
> //serprog: Programmer name is "serprog-duino"//
> //serprog: Serial buffer size is 65535//
> //serprog: Warning: Programmer does not support toggling its output
> drivers//
> //The following protocols are supported: SPI.//
> //Probing for Atmel AT25F512, 64 kB: probe_spi_at25f: id1 0x1f, id2 0x60//
> //Found Atmel flash chip "AT25F512" (64 kB, SPI) on serprog.//
> //Chip status register is 0x00.//
> //Chip status register: Write Protect Enable (WPEN) is not set//
> //Chip status register: Bit 6 is not set//
> //Chip status register: Bit 5 is not set//
> //Chip status register: Bit 4 is not set//
> //Chip status register: Block Protect 1 (BP1) is not set//
> //Chip status register: Block Protect 0 (BP0) is not set//
> //Chip status register: Write Enable Latch (WEL) is not set//
> //Chip status register: Write In Progress (WIP/BUSY) is not set//
> //Erasing and writing flash chip... Trying erase function 0...
> 0x000000-0x007fff:E, 0x008000-0x00ffff:EError: invalid response 0xFF
> from device//
> //spi_block_erase_52 failed during command execution at address 0x8000//
> //Reading current flash chip contents... Error: invalid response 0xFF
> from device//
> //Can't read anymore! Aborting.//
> //FAILED!//
> //Your flash chip is in an unknown state.//
> //Please report this on IRC at chat.freenode.net (channel #flashrom) or//
> //mail flashrom at flashrom.org, thanks!/

need to investigate further... any new findings regarding it?

> *LE25FW406A* -> not supported! Can i do something to help you support
> this chip?

Sure, send a patch ;)

> *AT45DB161D* -> all ok, perfect work!

was already marked ok

> *
> **AT45DB011B* -> not supported!
> You said that this chip (B and earlier) has no identification support.
> But i am not sure if this is relay true. Let me explain:
> Years ago i build another programmer for the parallel port. Very cheap,
> but not relay stable, or let's say very unstable! :-\
> But the tool from this programmer is able to detect the chip:
> 
> And now i have a clean read from this flash and can test it with
> flashrom ;-)
> Maybe you can contact Adam Dybkowski and ask how it works.
> This is/was the "Project-Page": http://dybkowski.net/content/en/node/15
> And i also have his email if you need it.

AFAICT it was not able to distinguish it from an input stuck at 1
http://sourceforge.net/p/ispprogrammer/code/HEAD/tree/trunk/Devices_AT45.pas#l3
-- 
Kind regards/Mit freundlichen Grüßen, Stefan Tauner




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