Comtrol eCos - Manual (Page 165)

fis unlock
Name
fis unlock — Unlock flash area
Synopsis
fis unlock {-f flash_address } {-l length }
Arguments
Name Type Description Default
flash_address Number Address of area to be
unlocked.
length Number Length of area to be
unlocked.
Description
This command is used to unlock a portion of flash memory forcibly, allowing it to be updated. It must be issued
for regions which have been locked before the FIS can reuse those portions of flash.
Note: Some flash devices power up in locked state and always need to be manually unlocked before they can
be written to.
Examples
Unlock an area of the flash
RedBoot> fis unlock -f 0xa0040000 -l 0x20000
... Unlock from 0xa0040000-0xa0060000: .
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