From: Stephane Eranian <eranian@cello.hpl.hp.com>
To: linux-ia64@vger.kernel.org
Subject: Re: [Linux-ia64] RTC config option doesn't work for IA64 ?
Date: Thu, 27 Jul 2000 02:46:55 +0000 [thread overview]
Message-ID: <marc-linux-ia64-105590678205234@msgid-missing> (raw)
In-Reply-To: <marc-linux-ia64-105590678205233@msgid-missing>
Hi,
> Is it just me, or does the RTC config option not generate a
> working kernel for the IA64 test4 kernel + david's 0714 patches?
>
> It appears that at least a header file is missing, I don't know
> what goes in it as yet: asm-ia64/mc146818rtc.h
>
> Basically compilation fails if the config option is turned on.
>
Normally you don't need to enable the CONFIG_RTC. You should enable
the CONFIG_EFI_RTC. Also in /dev you must have something like this:
crw-r--r-- 1 root root 10, 136 Apr 5 15:38 efirtc
lrwxrwxrwx 1 root root 6 May 5 15:29 rtc -> efirtc
You can keep the legacy RTC under another name. With this in place,
the hwclock program should work seamlessly.
On the machines that we have, if I recall correctly, the legacy RTC is still
present but the code has never been tested. Anyway, DiG does not
guarantee the existence of such a timer. The only portable way is via EFI
runtime services.
-Stephane
prev parent reply other threads:[~2000-07-27 2:46 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-07-26 19:13 [Linux-ia64] RTC config option doesn't work for IA64 ? Gerrit Huizenga
2000-07-27 2:46 ` Stephane Eranian [this message]
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