Better way to implement firmware upgrade for embedded Linux?

From: yakumoj (hunglm_at_mail.ebtnet.net)
Date: 07/16/04

  • Next message: nick: "Re: Stupid question," 
    Date: 16 Jul 2004 10:13:20 -0700

    I'm trying to implement function for firmware upgrade in an embedded
    linux system. Unlike most other embedded systems, the size of memory
    required for an
    embedded linux system is often larger. Take our system for example,
    the size of a complete firmware ( including kernel and ramdisk image.
    ) is about 5MB.
    I've tried both way, either

    (1)Overwrite flash on the fly, without checksum.
    (2)Kill some processes,read it to allocated memory, do checksum,and
    upgrade.

    For the first one, it is dangerous because possible link error or
    network failure. For the second one, I get OOM killer even after I've
    allocated memory and calculated checksum. Both of them are a little
    risky for me.

    So here is the question: is there better design strategy for firmware
    upgrade for an embedded linux system?

  • Next message: nick: "Re: Stupid question,"

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