| .TH FLASHROM 8 "April 11, 2009" |
| .SH NAME |
| flashrom \- read, write, verify and erase BIOS/ROM/flash chips |
| .SH SYNOPSIS |
| .B flashrom \fR[\fB\-rwvEVfLhR\fR] [\fB\-c\fR chipname] [\fB\-s\fR exclude_start] [\fB\-e\fR exclude_end] |
| [\fB-m\fR [vendor:]part] [\fB-l\fR file.layout] [\fB-i\fR image_name] [file] |
| .SH DESCRIPTION |
| .B flashrom |
| is a utility for reading, writing, verifying and erasing flash ROM chips. |
| It's often used to flash BIOS/coreboot/firmware images. |
| .PP |
| 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. |
| .PP |
| (see |
| .B http://coreboot.org |
| for details on coreboot) |
| .SH OPTIONS |
| Please note that the command line interface for flashrom will change before |
| flashrom 1.0. Do not use flashrom in scripts or other automated tools without |
| checking that your flashrom version won't interpret them in a totally different |
| way. |
| .PP |
| If no file is specified, then all that happens |
| is that flash info is dumped and the flash chip is set to writable. |
| .TP |
| .B "\-r, \-\-read <file>" |
| Read flash ROM contents and save them into the given |
| .BR <file> . |
| .TP |
| .B "\-w, \-\-write <file>" |
| Write file into flash ROM (default when |
| .B <file> |
| is specified). |
| .TP |
| .B "\-v, \-\-verify <file>" |
| Verify the flash ROM contents against the given |
| .BR <file> . |
| .TP |
| .B "\-E, \-\-erase" |
| Erase the flash ROM chip. |
| .TP |
| .B "\-V, \-\-verbose" |
| More verbose output. |
| .TP |
| .B "\-c, \-\-chip" <chipname> |
| Probe only for specified flash ROM chip. |
| .TP |
| .B "\-s, \-\-estart" <addr> |
| Exclude start position (obsolete). |
| .sp |
| flashrom supports ROM layouts. This allows you to flash certain parts of |
| the flash chip only. A ROM layout file looks like follows: |
| .sp |
| 00000000:00008fff gfxrom |
| 00009000:0003ffff normal |
| 00040000:0007ffff fallback |
| .sp |
| i.e.: |
| startaddr:endaddr name |
| .sp |
| All addresses are offsets within the file, not absolute addresses! |
| If you only want to update the normal image in a ROM you can say: |
| .sp |
| .B " flashrom -w --layout rom.layout --image normal agami_aruma.rom" |
| .sp |
| To update normal and fallback but leave the VGA BIOS alone, say: |
| .sp |
| .B " flashrom -w -l rom.layout -i normal \" |
| .br |
| .B " -i fallback agami_aruma.rom" |
| .sp |
| Currently overlapping sections are not supported. |
| .sp |
| ROM layouts should replace the -s and -e option since they are more |
| flexible and they should lead to a ROM update file format with the |
| ROM layout and the ROM image in one file (cpio, zip or something?). |
| .TP |
| .B "\-e, \-\-eend" <addr> |
| Exclude end postion (obsolete). |
| .TP |
| .B "\-m, \-\-mainboard" <[vendor:]part> |
| Override mainboard settings. |
| .sp |
| flashrom reads the coreboot table to determine the current mainboard. If no |
| coreboot table could be read or if you want to override these values, you can |
| specify -m, e.g.: |
| .sp |
| .B " flashrom -w --mainboard AGAMI:ARUMA agami_aruma.rom" |
| .sp |
| See the 'Supported mainboards' section in the output of 'flashrom -L' for |
| a list of boards which require the specification of the board name, if no |
| coreboot table is found. |
| .TP |
| .B "\-f, \-\-force" |
| Force write without checking whether the ROM image file is really meant |
| to be used on this board. |
| .sp |
| Note: This check only works while coreboot is running, and only for those |
| boards where the coreboot code supports it. |
| .TP |
| .B "\-l, \-\-layout <file>" |
| Read ROM layout from |
| .BR <file> . |
| .TP |
| .B "\-i, \-\-image <name>" |
| Only flash image |
| .B <name> |
| from flash layout. |
| .TP |
| .B "\-L, \-\-list\-supported" |
| List the ROM chips, chipsets, and mainboards supported by flashrom. |
| The list of mainboards consists of those boards which need a special |
| ROM write-enable function for flashrom to work. |
| .sp |
| There are many other boards which will work out of the box, without such |
| special support in flashrom. Some of the known-good/known-bad and tested ones |
| are listed at |
| .BR http://coreboot.org/Flashrom#Supported_mainboards , |
| but the list is not exhaustive, of course. |
| .sp |
| Please let us know if you can verify other boards to work or not work out |
| of the box. |
| .TP |
| .B "\-h, \-\-help" |
| Show a help text and exit. |
| .TP |
| .B "\-R, \-\-version" |
| Show version information and exit. |
| .SH EXIT STATUS |
| flashrom exits with 0 on success, 1 on most failures but with 2 if /dev/mem |
| (/dev/xsvc on Solaris) can not be opened and with 3 if a call to mmap() fails. |
| .SH BUGS |
| Please report any bugs at |
| .BR http://tracker.coreboot.org/trac/coreboot/newticket "," |
| or on the coreboot mailing list |
| .RB "(" http://coreboot.org/Mailinglist ")." |
| .SH LICENCE |
| .B flashrom |
| is covered by the GNU General Public License (GPL), version 2. Some files are |
| additionally available under the GPL (version 2, or any later version). |
| .SH COPYRIGHT |
| .br |
| Please see the individual files. |
| .SH AUTHORS |
| Carl-Daniel Hailfinger |
| .br |
| Claus Gindhart <claus.gindhart@kontron.com> |
| .br |
| Dominik Geyer <dominik.geyer@kontron.com> |
| .br |
| Eric Biederman <ebiederman@lnxi.com> |
| .br |
| Giampiero Giancipoli <gianci@email.it> |
| .br |
| Joe Bao <Zheng.Bao@amd.com> |
| .br |
| Luc Verhaegen <libv@skynet.be> |
| .br |
| Li-Ta Lo |
| .br |
| Markus Boas <ryven@ryven.de> |
| .br |
| Nikolay Petukhov <nikolay.petukhov@gmail.com> |
| .br |
| Peter Stuge <peter@stuge.se> |
| .br |
| Reinder E.N. de Haan <lb_reha@mveas.com> |
| .br |
| Ronald G. Minnich <rminnich@gmail.com> |
| .br |
| Ronald Hoogenboom <ronald@zonnet.nl> |
| .br |
| Stefan Reinauer <stepan@coresystems.de> |
| .br |
| Stefan Wildemann <stefan.wildemann@kontron.com> |
| .br |
| Steven James <pyro@linuxlabs.com> |
| .br |
| Uwe Hermann <uwe@hermann-uwe.de> |
| .br |
| Wang Qingpei <Qingpei.Wang@amd.com> |
| .br |
| Yinghai Lu <yinghai.lu@amd.com> |
| .br |
| some others |
| .PP |
| This manual page was written by Uwe Hermann <uwe@hermann-uwe.de>. |
| It is licensed under the terms of the GNU GPL (version 2 or later). |