Date: Sat, 6 Mar 1999 12:33:55 +0100 From: Nicolas Souchu <nsouch@teaser.fr> To: Matthew Dillon <dillon@apollo.backplane.com> Cc: freebsd-hackers@FreeBSD.ORG, des@flood.ping.uio.no Subject: Re: new ppbus driver problem Message-ID: <19990306123355.04328@breizh.teaser.fr> In-Reply-To: <199903052001.MAA51599@apollo.backplane.com>; from Matthew Dillon on Fri, Mar 05, 1999 at 12:01:37PM -0800 References: <199903052001.MAA51599@apollo.backplane.com>
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On Fri, Mar 05, 1999 at 12:01:37PM -0800, Matthew Dillon wrote:
>
> This is with -current.
>
> I've been getting crashes during boot with the new ppbus stuff and lpt0
> enabled.
Hmm, your the first reporting such problem.
>
> It detects the parallel port just fine, but further on in the boot
> sequence the system gets an RTC error and then it just locks up
> completely... it doesn't even get past the kernel config ( never gets
> to execing init ).
What's your hardware? Motherboard, and parallel port chipset?
Parallel port is generaly handled by a superIO chip, but your
system may rely on the PCI/ISA chip..
>
> I was able to solve the problem by commenting out most of the probe code
> in i386/isa/ppc.c, as shown below. I don't know which port in the probe
> code is causing the problem, but something in there is blowing up my
> systems.
>
> Maybe the probe code should be a little more conservative, with a
> kernel config option to be less conservative ????
A boot option is available for this. Undocumented :( flag 0x40
for ppc at boot does it.
>
> -Matt
> Matthew Dillon
> <dillon@backplane.com>
>
>static int
>ppc_detect(struct ppc_data *ppc, int chipset_mode) {
>
> int i, mode;
>
> /* list of supported chipsets */
> int (*chipset_detect[])(struct ppc_data *, int) = {
>#if 0
> ppc_pc873xx_detect,
> ppc_smc37c66xgt_detect,
> ppc_w83877f_detect,
>#endif
> ppc_generic_detect,
> NULL
> };
>
>
>
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--
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