Re: [flashrom] Tested AT25DF161

[Stefan Tauner]

On Sat, 1 Mar 2014 23:12:15 +0400
Alex K  wrote:
> Hello I tested for cleaning work, reading, writing, memory AT25DF161 using
> Bus Pirate v4.
> Used:
> flashrom v0.9.6.1-r1704 on Windows 6.1 (x86)
> flashrom was built with GCC 4.7.2, little endian
> Baud rate is 115200.
> Detected Bus Pirate hardware v4
> Detected Bus Pirate firmware 6.2 ("v6.2-beta1")
> Using SPI command set v2.
> SPI speed is 8MHz
> Raw bitbang mode version 1
> Raw SPI mode version 1
> The following protocols are supported: SPI.
> Probing for Atmel AT25DF161, 2048 kB: probe_spi_rdid_generic: id1 0x1f, id2
> 0x4602
> Found Atmel flash chip "AT25DF161" (2048 kB, SPI) on buspirate_spi.
> Ignoring security lockdown (if present)
> Ignoring status register byte 2
> Chip status register is 0x0c.
> Chip status register: Sector Protection Register Lock (SRPL) is not set
> Chip status register: Bit 6 is not set
> Chip status register: Erase/Program Error (EPE) is not set
> Chip status register: WP# pin (WPP) is asserted
> Chip status register: Software Protection Status (SWP): all sectors are
> protected
> Chip status register: Write Enable Latch (WEL) is not set
> Chip status register: Write In Progress (WIP/BUSY) is not set
> ===
>
> Initially, there was a problem with the use of long cables (> 20 cm).
> After verification of the firmware did not pass.
> Replaced wires from Bus Pirate at length (10cm), all turned out. Many
> thanks for the utility. I think that you can remove the status UNTESTED
> with this chip. Thank you again.
> I think it is reasonable to point out the page on the wiki that the length
> of wire for the Bus Pirate is very desirable <= 10 cm, to avoid many
> mistakes. This saves the trouble of starting recording, reading chips.
>
> Sorry for my bad english, I'm from Russia.

Hello Alex,

thanks for your report!
I am wondering a bit about the status register bits. According to your
log the software write protection is enabled (and the parsing of the
raw value 0x0c seems to be correct, so this is not only a cosmetic
problem). Did you change anything since you wrote to the chip?

Regarding the cable lengths:
The troubleshooting section of the bus pirate wiki page links to this:
http://flashrom.org/ISP and the first problem mentioned there are too long cables ;)

Tested AT25DF161

[Alex K]

Sorry, I do not quite understand your question, but I'll try to answer.
I forgot when recording chip, specify a log file entry. Because I have a
log file cleanup, and reading to compare the recorded information.
To clean the chip pin WP, I connect to the GND. For writing and reading
from the chip, pin WP connects to the VCC.

Here is the log when cleaning:
======================
flashrom v0.9.6.1-r1704 on Windows 6.1 (x86)
flashrom was built with GCC 4.7.2, little endian
Command line (7 args): flashrom.exe -p buspirate_spi:dev=COM12 -VE -c
AT25DF161 -o write_e.txt
Calibrating delay loop... OS timer resolution is 1000 usecs, 2185M loops
per second, 10 myus = 0 us, 100 myus = 0 us, 1000 myus = 1000 us, 10000
myus = 10001 us, 4000 myus = 4000 us, OK.
Initializing buspirate_spi programmer
Baud rate is 115200.
Detected Bus Pirate hardware v4
Detected Bus Pirate firmware 6.2 ("v6.2-beta1")
Using SPI command set v2.
SPI speed is 8MHz
Raw bitbang mode version 1
Raw SPI mode version 1
The following protocols are supported: SPI.
Probing for Atmel AT25DF161, 2048 kB: probe_spi_rdid_generic: id1 0x1f, id2
0x4602
Found Atmel flash chip "AT25DF161" (2048 kB, SPI) on buspirate_spi.
Ignoring security lockdown (if present)
Ignoring status register byte 2
Chip status register is 0x0c.
Chip status register: Sector Protection Register Lock (SRPL) is not set
Chip status register: Bit 6 is not set
Chip status register: Erase/Program Error (EPE) is not set
Chip status register: WP# pin (WPP) is asserted
Chip status register: Software Protection Status (SWP): all sectors are
protected
Chip status register: Write Enable Latch (WEL) is not set
Chip status register: Write In Progress (WIP/BUSY) is not set
===
This flash part has status UNTESTED for operations: 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 part. Please include the flashrom
output with the additional -V option for all operations you tested (-V, -Vr,
-VE, -Vw), and mention which mainboard or programmer you tested.
Please mention your board in the subject line. Thanks for your help!
Ignoring security lockdown (if present)
Some block protection in effect, disabling... disabled.
Erase/write done.
Raw bitbang mode version 1
Bus Pirate shutdown completed.

Here is the log when reading for comparison:
================================
flashrom v0.9.6.1-r1704 on Windows 6.1 (x86)
flashrom was built with GCC 4.7.2, little endian
Command line (8 args): flashrom.exe -p buspirate_spi:dev=COM12 -Vr
read_CAM-4020.bin -c AT25DF161 -o read_vr.txt
Calibrating delay loop... OS timer resolution is 1000 usecs, 2158M loops
per second, 10 myus = 0 us, 100 myus = 0 us, 1000 myus = 1000 us, 10000
myus = 11001 us, 4000 myus = 4000 us, OK.
Initializing buspirate_spi programmer
Baud rate is 115200.
Detected Bus Pirate hardware v4
Detected Bus Pirate firmware 6.2 ("v6.2-beta1")
Using SPI command set v2.
SPI speed is 8MHz
Raw bitbang mode version 1
Raw SPI mode version 1
The following protocols are supported: SPI.
Probing for Atmel AT25DF161, 2048 kB: probe_spi_rdid_generic: id1 0x1f, id2
0x4602
Found Atmel flash chip "AT25DF161" (2048 kB, SPI) on buspirate_spi.
Ignoring security lockdown (if present)
Ignoring status register byte 2
Chip status register is 0x1c.
Chip status register: Sector Protection Register Lock (SRPL) is not set
Chip status register: Bit 6 is not set
Chip status register: Erase/Program Error (EPE) is not set
Chip status register: WP# pin (WPP) is not asserted
Chip status register: Software Protection Status (SWP): all sectors are
protected
Chip status register: Write Enable Latch (WEL) is not set
Chip status register: Write In Progress (WIP/BUSY) is not set
===
This flash part has status UNTESTED for operations: 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 part. Please include the flashrom
output with the additional -V option for all operations you tested (-V, -Vr,
-VE, -Vw), and mention which mainboard or programmer you tested.
Please mention your board in the subject line. Thanks for your help!
Ignoring security lockdown (if present)
Some block protection in effect, disabling... disabled.
Reading flash... done.
Raw bitbang mode version 1
Bus Pirate shutdown completed.
========================

I hope this information will help you.

2014-03-01 23:48 GMT+04:00 Stefan Tauner <[e-mail]
> :
> On Sat, 1 Mar 2014 23:12:15 +0400
> Alex K  wrote:
> > Hello I tested for cleaning work, reading, writing, memory AT25DF161
>
> using
> > Bus Pirate v4.
> > Used:
> > flashrom v0.9.6.1-r1704 on Windows 6.1 (x86)
> > flashrom was built with GCC 4.7.2, little endian
> > Baud rate is 115200.
> > Detected Bus Pirate hardware v4
> > Detected Bus Pirate firmware 6.2 ("v6.2-beta1")
> > Using SPI command set v2.
> > SPI speed is 8MHz
> > Raw bitbang mode version 1
> > Raw SPI mode version 1
> > The following protocols are supported: SPI.
> > Probing for Atmel AT25DF161, 2048 kB: probe_spi_rdid_generic: id1 0x1f,
>
> id2
> > 0x4602
> > Found Atmel flash chip "AT25DF161" (2048 kB, SPI) on buspirate_spi.
> > Ignoring security lockdown (if present)
> > Ignoring status register byte 2
> > Chip status register is 0x0c.
> > Chip status register: Sector Protection Register Lock (SRPL) is not set
> > Chip status register: Bit 6 is not set
> > Chip status register: Erase/Program Error (EPE) is not set
> > Chip status register: WP# pin (WPP) is asserted
> > Chip status register: Software Protection Status (SWP): all sectors are
> > protected
> > Chip status register: Write Enable Latch (WEL) is not set
> > Chip status register: Write In Progress (WIP/BUSY) is not set
> > ===
> >
> > Initially, there was a problem with the use of long cables (> 20 cm).
> > After verification of the firmware did not pass.
> > Replaced wires from Bus Pirate at length (10cm), all turned out. Many
> > thanks for the utility. I think that you can remove the status UNTESTED
> > with this chip. Thank you again.
> > I think it is reasonable to point out the page on the wiki that the
>
> length
> > of wire for the Bus Pirate is very desirable <= 10 cm, to avoid many
> > mistakes. This saves the trouble of starting recording, reading chips.
> >
> > Sorry for my bad english, I'm from Russia.
>
> Hello Alex,
>
> thanks for your report!
> I am wondering a bit about the status register bits. According to your
> log the software write protection is enabled (and the parsing of the
> raw value 0x0c seems to be correct, so this is not only a cosmetic
> problem). Did you change anything since you wrote to the chip?
>
> Regarding the cable lengths:
> The troubleshooting section of the bus pirate wiki page links to this:
> http://flashrom.org/ISP and the first problem mentioned there are too
> long cables ;)