From: Marco Stornelli <marco.stornelli@coritel.it>
To: u-boot@lists.denx.de
Subject: [U-Boot-Users] Fallback kernel
Date: Thu, 29 Nov 2007 17:20:54 +0100 [thread overview]
Message-ID: <474EE6E6.9020804@coritel.it> (raw)
Wolfgang Denk wrote:
>>
>> I'm using two Linux kernel a fallback (safe) kernel and a kernel
>> downloaded in flash via ethernet. I'd like that u-boot starts the
>> downloaded kernel, if this kernel fails for more than N times uboot
>> starts the fallback. Is there already something like in uboot or how
>> can I do that?
>U-Boot supports the "bootcount" variable to implement the Boot Count
>Limit feature (see CGL Requirements Definition). However, this
>requires a little processor specific support which so far is
>available only on few CPUs (but trivial to add where missing).
>Best regards,
>Wolfgang Denk
Why does it require a little processor specific support? In the
bootcount_load and bootcount_store, we could use an uboot environment
variable to store and load the value (if the env is in flash for
example), isn't it?
next reply other threads:[~2007-11-29 16:20 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-11-29 16:20 Marco Stornelli [this message]
2007-12-03 15:54 ` [U-Boot-Users] Fallback kernel Detlev Zundel
-- strict thread matches above, loose matches on Subject: below --
2007-11-26 7:51 Marco Stornelli
2007-11-26 8:47 ` Wolfgang Denk
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