Re: [Etherboot-developers] All pci drivers in 1 rom image.

[Eric W B. <ebi...@ln...>]

Michael Brown <mb...@fe...> writes:

> On 15 Aug 2002, Eric W Biederman wrote:
> > O.k. playing with drivers I have just built an etherboot romimage, with
> > all of the pci drivers compiled in.  As you can see below the text
> > comes to 81K for a total image size of 188K.  The compressed romimage
> > probably comes to 40K but lzhuf is haning on such a large file so I don't
> > have good numbers.  This does mean there are a few nics with ROMs that
> > could have an everything, test.
> 
> Excellent - I can provide clients with a "will boot anything" disk so they
> can check to see if Etherboot supports their NICs.  Now, if only the PCI
> spec could change so that the same ROM image can work when placed in any
> NIC...

Right that should be possible.  At least for pci nics.  We could probably
do this with pnpisa nics as well, (because the probe routines are
reliable enough).  But I don't have the cards, or the slots to test
the code.  My current test machine only has 64bit PCI-X 133Mhz slots,
It can do 32bit 33Mhz PCI in there.
 
> > With a few more tweaks it finally looks like I have a good base for adding
> > all kinds of drivers.  I have moved all of table entries from config.c
> > into the drivers themselves, and added CONFIG_ISA and CONFIG_PCI
> > options, to specify what kind of drivers can be supported.
> > Using the filename to specify which drivers to compile is beginning to
> > look like a problem.  In particular we are half way to ext2 filename
> > size limit already.  So I will probably add a target for all pci
> > drivers, to avoid this problem.
> > size
> bin32/3c595--3c90x--eepro100--e1000--lance--tulip--davicom--rtl8139--via-rhine--w89c840--sis900--natsemi--fa311--prism2_plx--prism2_pci--ns8390--epic100.tmp
> 
> >    text	   data	    bss	    dec	    hex	filename
> > 83156 2856 106076 192088 2ee58
> bin32/3c595--3c90x--eepro100--e1000--lance--tulip--davicom--rtl8139--via-rhine--w89c840--sis900--natsemi--fa311--prism2_plx--prism2_pci--ns8390--epic100.tmp
> 
> 
> I assume you'll be keeping the current scheme as well - the most usual
> number of drivers in a ROM will probably be 1, 2 or all of them.

Right.  I still haven't written the all of them case.  But I have
extended the current scheme to be fully recursive as above, so you
can include all of the drivers you want.

Eric