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5 Flashrom is a universal flash programming utility for DIP, PLCC, or SPI
6 flash ROM chips. It can be used to flash BIOS/coreboot/firmware images.
8 (see http://coreboot.org for details on coreboot)
14 To build the flashrom utility you need to install the following packages:
17 * pciutils-devel / pciutils-dev / libpci-dev
18 * zlib-devel / zlib1g-dev
24 $ flashrom [-rwvEVfLhR] [-c chipname] [-s exclude_start] [-e exclude_end]
25 [-m [vendor:]part] [-l file.layout] [-i imagename] [file]
26 -r | --read: read flash and save into file
27 -w | --write: write file into flash (default when
29 -v | --verify: verify flash against file
30 -E | --erase: erase flash device
31 -V | --verbose: more verbose output
32 -c | --chip <chipname>: probe only for specified flash chip
33 -s | --estart <addr>: exclude start position
34 -e | --eend <addr>: exclude end postion
35 -m | --mainboard <[vendor:]part>: override mainboard settings
36 -f | --force: force write without checking image
37 -l | --layout <file.layout>: read rom layout from file
38 -i | --image <name>: only flash image name from flash layout
39 -L | --list-supported: print supported devices
40 -h | --help: print this help text
41 -R | --version: print the version (release)
43 If no file is specified, then all that happens
44 is that flash info is dumped and the flash chip is set to writable.
49 flashrom exits with 0 on success, 1 on most failures but with 2 if /dev/mem
50 (/dev/xsvc on Solaris) can not be opened and with 3 if a call to mmap() fails.
53 coreboot Table and Mainboard Identification
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56 Flashrom reads the coreboot table to determine the current mainboard
57 (parse DMI as well in future?). If no coreboot table could be read
58 or if you want to override these values, you can specify -m, e.g.:
60 $ flashrom -w --mainboard AGAMI:ARUMA agami_aruma.rom
62 See the 'Supported mainboards' section in the output of 'flashrom -L' for
63 a list of boards which require the specification of the board name, if no
64 coreboot table is found.
70 Flashrom supports ROM layouts. This allows you to flash certain parts of
71 the flash chip only. A ROM layout file looks like follows:
73 00000000:00008fff gfxrom
74 00009000:0003ffff normal
75 00040000:0007ffff fallback
78 startaddr:endaddr name
80 All addresses are offsets within the file, not absolute addresses!
82 If you only want to update the normal image in a ROM you can say:
84 flashrom -w --layout rom.layout --image normal agami_aruma.rom
86 To update normal and fallback but leave the VGA BIOS alone, say:
88 flashrom -w -l rom.layout -i normal -i fallback agami_aruma.rom
90 Currently overlapping sections are not supported.
92 ROM layouts should replace the -s and -e option since they are more
93 flexible and they should lead to a ROM update file format with the
94 ROM layout and the ROM image in one file (cpio, zip or something?).
100 Disk on Chip support was removed from flashrom in r3382. It had already
101 been disabled by default in flashrom for several years because the code
102 was considered unstable and incomplete. The products intended to work
103 have been End-Of-Lifed by the manufacturer for a long time.
106 Supported Flash Chips / Chipsets / Mainboards
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109 Please check the output of 'flashrom -L' for the list of supported
110 flash chips, chipsets/southbridges, and mainboards.
112 See also http://coreboot.org/Flashrom for more details.