Fis unlock, Name, Synopsis – Comtrol eCos User Manual

Page 165: Arguments, Description, Examples

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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: .