Possible to write to BIOS from linux kernel mode?

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Is it possible to flash/write to a BIOS from kernel mode in Linux? I've been doing some research on this and can't find a definitive answer to this. I'm not so great with kernel level stuff and hardware. From what I've been able to find, I know certain kernel facilities can interrogate the BIOS (see dmidecode) given the BIOS supports certain interfaces. I know the difference between real and protected mode. But switching to real mode from Linux seems impossible to do correctly (?). I also know x86 has emulation for 8088 programs but unsure whether the emulation would allow flashing the BIOS. Wouldn't it be possible to just write to certain addresses in kernel mode to "flash" the BIOS??

asked 29 secs ago

user3279360

17

Possible to write to BIOS from linux kernel mode?