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8130f2d3ec
When flashrom JEDEC code sends the ID command to the chip, it expects to see IDs in the default flash location. However, sometimes the chip does not react to the ID command, either because it doesn't understand the command or because the command never reached it. One way to detect this is to compare ID output with flash chip contents for the same location. If they are identical, there is a high chance you're not actually seeing ID output. Warn the user in that case. This patch helps a lot when a chip is not recognized and we want to check if the probe responses are real IDs or just random flash chip contents. This should probably be added to all probe functions, but probe_jedec is called for all sizes and thus flashrom will check this condition at least once per size, making sure we can cross-match the warning. Corresponding to flashrom svn r494. Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net> Acked-by: FENG Yu Ning <fengyuning1984@gmail.com>
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flashrom README
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flashrom is a utility for reading, writing, verifying and erasing flash ROM
chips. It's often used to flash BIOS/coreboot/firmware images.
It supports a wide range of DIP32, PLCC32, DIP8, SO8/SOIC8, TSOP32, and
TSOP40 chips, which use various protocols such as LPC, FWH, parallel flash,
or SPI.
(see http://coreboot.org for details on coreboot)
Build Requirements
------------------
To build flashrom you need to install the following packages or ports:
Linux et al:
* pciutils
* pciutils-devel / pciutils-dev / libpci-dev
* zlib-devel / zlib1g-dev
On FreeBSD, you need the following ports:
* devel/gmake
* devel/libpci
To compile on Linux, use:
make
To compile on FreeBSD, use:
gmake
To compile on Solaris, use:
gmake LDFLAGS="-L$pathtolibpci -lpci -lz" CC="gcc -I$pathtopciheaders" \
CFLAGS=-O2
To compile on DragonFly BSD, use:
ln -s /usr/pkg/include/pciutils pci
gmake CFLAGS=-I. LDFLAGS="-L/usr/pkg/lib -lpci -lz"
To compile and run on Darwin/Mac OS X:
Install DirectIO from coresystems GmbH.
DirectIO is available at http://www.coresystems.de/en/directio.
Usage / Options
---------------
Please see the flashrom(8) manpage.
Exit status
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Please see the flashrom(8) manpage.
coreboot Table and Mainboard Identification
--------------------------------------------
Please see the flashrom(8) manpage.
ROM Layout Support
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Please see the flashrom(8) manpage.
Supported Flash Chips / Chipsets / Mainboards
---------------------------------------------
Please check the output of 'flashrom -L' for the list of supported
flash chips, chipsets/southbridges, and mainboards.
See also http://coreboot.org/Flashrom for more details.