[flashrom] Re: flashrom mx25l3255e

Thanks! It works now! Great! I connected WP and HOLD to 3.3V.

One more question: Is it possible to dump the OTP with flashrom also?

best regards

Daniel

Am 19.08.2020 um 19:26 schrieb Mike Banon:
> Based on your description, this seems to be a connection problem. What
> Bus Pirate you're using - v3 or v4 ? I have v4 and never had to modify
> any flashrom source files. If you clone the latest flashrom sources
> and build them, they should work for you without any modifications.
> How did you connect the cables? As you could see from this manual
> http://dangerousprototypes.com/docs/Flashing_a_BIOS_chip_with_Bus_Pirate#1P_...
> , it's advised to connect not just VCC but also WP and HOLD, - to a
> single 3.3v pin, because a Bus Pirate only has one.
>
> On Wed, Aug 19, 2020 at 8:15 PM [e-mail]  wrote:
> > Hi Mike,
> >
> > thanks for helping. I have taken a step forward. First problem was using
> > bus pirate in virtual box (with linux ubuntu). After that i installed
> > ubuntu on my computer as second operating system. Then flashrom reads
> > the mx25l3255e chip.
> >
> > But there is a second issue. I get only 00's. I sent you the dump file,
> > log file and the config files which i used. I implanted the chip there.
> >
> > Do you see a mistake in the config files or do you see a problem in the
> > log file?
> >
> > Best regards
> >
> > Daniel
> >
> > Am 18.08.2020 um 12:29 schrieb Mike Banon:
> > > How long have you waited? Depending on a firmware installed, Bus
> > > Pirate may be a little slow: check the Bus Pirate Community Firmware
> > > project for the firmware updates. Also, try running this with a higher
> > > verbosity, i.e. -VV or -VVV or even more V - that could give you some
> > > hints. Also please make sure that your connectivity is good enough
> > >
> > > On Sun, Aug 16, 2020 at 11:23 PM [e-mail]  wrote:
> > > > Hi flashrom team,
> > > >
> > > > i try to read the mx25l3255e (https://media.digikey.com/pdf/Data%20Sheets/Macronix/MX25L3255E.pdf) chip. But it don't work. I have tried to patch flashrom but output say:
> > > >
> > > > sudo ./flashrom -f -p buspirate_spi:dev=/dev/ttyUSB0,spispeed=115 -V -r test_mx25l3255e.bin -c MX25L3255E
> > > >
> > > > flashrom unknown on Linux 5.4.0-42-generic (x86_64)
> > > > flashrom is free software, get the source code at https://flashrom.org
> > > >
> > > > flashrom was built with libpci 3.6.4, GCC 9.3.0, little endian
> > > > Command line (8 args): ./flashrom -f -p buspirate_spi:dev=/dev/ttyUSB0,spispeed=115 -V -r test_mx25l3255e.bin -c MX25L3255E
> > > > Using clock_gettime for delay loops (clk_id: 1, resolution: 1ns).
> > > > Initializing buspirate_spi programmer
> > > > Invalid SPI speed, using default.
> > > > Detected Bus Pirate hardware 3.5
> > > > Detected Bus Pirate firmware 7.0
> > > > Using SPI command set v2.
> > > > SPI speed is 8MHz
> > > > Bus Pirate v3 or newer detected. Set serial speed to 2M baud.
> > > > Serial speed is 2000000 baud
> > > > Raw bitbang mode version 1
> > > > Raw SPI mode version 1
> > > > The following protocols are supported: SPI.
> > > > Probing for Macronix MX25L3255E, 4096 kB: probe_spi_rdid_generic: id1 0xc2, id2 0x9e16
> > > > Found Macronix flash chip "MX25L3255E" (4096 kB, SPI) on buspirate_spi.
> > > > Chip security register: 0x80
> > > >       WPSEL is ON
> > > > Chip status register is 0x7c.
> > > > Chip status register: Status Register Write Disable (SRWD, SRP, ...) is not set
> > > > Chip status register: Bit 6 is set
> > > > Chip status register: Block Protect 3 (BP3) is set
> > > > Chip status register: Block Protect 2 (BP2) is set
> > > > Chip status register: Block Protect 1 (BP1) is set
> > > > Chip status register: Block Protect 0 (BP0) is set
> > > > Chip status register: Write Enable Latch (WEL) is not set
> > > > Chip status register: Write In Progress (WIP/BUSY) is not set
> > > > This chip may contain one-time programmable memory. flashrom cannot read
> > > > and may never be able to write it, hence it may not be able to completely
> > > > clone the contents of this chip (see man page for details).
> > > > ===
> > > > This flash part has status UNTESTED for operations: PROBE READ ERASE WRITE
> > > > The test status of this chip may have been updated in the latest development
> > > > version of flashrom. If you are running the latest development version,
> > > > please email a report to [e-mail] if any of the above operations
> > > > work correctly for you with this flash chip. Please include the flashrom log
> > > > file for all operations you tested (see the man page for details), and mention
> > > > which mainboard or programmer you tested in the subject line.
> > > > Thanks for your help!
> > > > Some block protection in effect, disabling... Block protection could not be disabled!
> > > > Chip security register: 0x80
> > > >       WPSEL is ON
> > > > Chip status register is 0x7c.
> > > > Chip status register: Status Register Write Disable (SRWD, SRP, ...) is not set
> > > > Chip status register: Bit 6 is set
> > > > Chip status register: Block Protect 3 (BP3) is set
> > > > Chip status register: Block Protect 2 (BP2) is set
> > > > Chip status register: Block Protect 1 (BP1) is set
> > > > Chip status register: Block Protect 0 (BP0) is set
> > > > Chip status register: Write Enable Latch (WEL) is not set
> > > > Chip status register: Write In Progress (WIP/BUSY) is not set
> > > > Reading flash...
> > > >
> > > > But then nothing happens. Can you help? That would be great!
> > > >
> > > > Best regards
> > > >
> > > > Daniel
> > > >
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