Discussion:
Floppy detection probems with 6.2
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Daniel O'Connor
2007-04-17 07:05:04 UTC
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I am installing FreeBSD 6.2/amd64 on a Supermicro P8SCT however the install
kernel refuses to attach the floppy (it returns ENOMEM). If I boot the same
kernel without the mfsroot image it sees it fine so.

I am trying to find out more information about what memory is being used,
etc.. Does anyone have a suggestion how I can do this?

Thanks.
--
Daniel O'Connor software and network engineer
for Genesis Software - http://www.gsoft.com.au
"The nice thing about standards is that there
are so many of them to choose from."
-- Andrew Tanenbaum
GPG Fingerprint - 5596 B766 97C0 0E94 4347 295E E593 DC20 7B3F CE8C
M. Warner Losh
2007-04-17 15:13:01 UTC
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In message: <***@gsoft.com.au>
"Daniel O'Connor" <***@gsoft.com.au> writes:
: I am installing FreeBSD 6.2/amd64 on a Supermicro P8SCT however the install
: kernel refuses to attach the floppy (it returns ENOMEM). If I boot the same
: kernel without the mfsroot image it sees it fine so.
:
: I am trying to find out more information about what memory is being used,
: etc.. Does anyone have a suggestion how I can do this?

Maybe we've come to the point in time that we need to do PIO for
floppies when we can't allocate enough memory for their DMA at boot.

Warner
Daniel O'Connor
2007-04-19 02:18:45 UTC
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Post by M. Warner Losh
: I am trying to find out more information about what memory is being used,
: etc.. Does anyone have a suggestion how I can do this?
Maybe we've come to the point in time that we need to do PIO for
floppies when we can't allocate enough memory for their DMA at boot.
That'd be a nice fall back but it surely it can't be too hard to reserve some
memory for stuff like this?
--
Daniel O'Connor software and network engineer
for Genesis Software - http://www.gsoft.com.au
"The nice thing about standards is that there
are so many of them to choose from."
-- Andrew Tanenbaum
GPG Fingerprint - 5596 B766 97C0 0E94 4347 295E E593 DC20 7B3F CE8C
M. Warner Losh
2007-04-19 02:27:36 UTC
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In message: <***@gsoft.com.au>
"Daniel O'Connor" <***@gsoft.com.au> writes:
: On Wednesday 18 April 2007 00:43, M. Warner Losh wrote:
: > : I am trying to find out more information about what memory is being used,
: > : etc.. Does anyone have a suggestion how I can do this?
: >
: > Maybe we've come to the point in time that we need to do PIO for
: > floppies when we can't allocate enough memory for their DMA at boot.
:
: That'd be a nice fall back but it surely it can't be too hard to reserve some
: memory for stuff like this?

I think that there is a way... We only need ~20k for this...

Warner
Daniel O'Connor
2007-04-19 12:53:42 UTC
Permalink
Post by M. Warner Losh
: That'd be a nice fall back but it surely it can't be too hard to reserve
: some memory for stuff like this?
I think that there is a way... We only need ~20k for this...
Is it perhaps that the loader puts the kernel low down in memory or something?

(Wild guess..)
--
Daniel O'Connor software and network engineer
for Genesis Software - http://www.gsoft.com.au
"The nice thing about standards is that there
are so many of them to choose from."
-- Andrew Tanenbaum
GPG Fingerprint - 5596 B766 97C0 0E94 4347 295E E593 DC20 7B3F CE8C
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