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Flashrom enables BIOS flashing via Linux

May 8, 2009 — by Eric Brown — from the LinuxDevices Archive — 6 views

Coreboot.org released an almost-final 0.90 version of open source BIOS flashing firmware it says was nine years in the making. Flashrom offers Linux and UNIX users a BIOS flashing mechanism they can call their own, with support for 150 flash-chip families and 75 chipsets, Coreboot.org says.

By its very nature, BIOS firmware is operating system-independent, since it loads before a computer's OS in order to identify, test, and initialize the device's processor, memory, graphics card, and peripherals. But, updating a BIOS to incorporate bug fixes and other improvements requires booting a computer into an operating system, then using the latter to run BIOS flashing software.

All too often, Linux users have been forced to update their BIOSes via MS-DOS boot disks loaded with DOS BIOS flashing utilities. But now, they no longer need suffer that indignity, thanks to a BIOS flasher that runs under Linux. According to Coreboot.org, Flashrom offers a command-line interface, can operate remotely through SSH, and can even re-flash multiple machines simultaneously.

Claimed by Coreboot to be faster than most vendor flash tools, Flashrom supports Linux, FreeBSD, DragonFly BSD, Solaris, Mac OS X, and other UNIX-like OSes. It's said that on some motherboards, the tool also enables hot-flashing, in which a BIOS chip is physically replaced while the system is running.

According to Coreboot, Flashrom features include:

  • Supports parallel, LPC, FWH, and SPI flash interfaces
  • Supports more than 150 flash chip families and half a dozen variants per family
  • Agnostic to flash chips, with support verified for DIP32, PLCC32, DIP8, SO8/SOIC8, TSOP32, TSOP40, and more
  • Supports more than 75 chipsets, some with multiple flash controllers
  • Mainboard enabling code offered for dozens of nonstandard mainboards
  • No physical access needed; root access is sufficient
  • No bootable floppy disk, bootable CD-ROM, or other media required
  • Reflash remotely via SSH
  • Reflashes ROM in a running system; no instant reboot needed
  • Cross-flashing and hot-flashing possible on compatible systems
  • Scriptable, enabling reflash of multiple identical machines simultaneously

Availability

Flashrom 0.90 is available now as a free download. More information may be found at Coreboot.org, here.


 
This article was originally published on LinuxDevices.com and has been donated to the open source community by QuinStreet Inc. Please visit LinuxToday.com for up-to-date news and articles about Linux and open source.



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