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The UNDI ROM header does contain a checksum byte. Apparently no-one
cares about this, since iPXE has left it as zero for years without
anyone noticing.
Since Option::ROM now understands the UNDI ROM header, we may as well
fix up the checksum byte for the sake of completeness.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
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PCI3.0 allows us to report a "runtime size" which can be smaller than
the actual ROM size. On systems that support PMM our runtime size
will be small (~2.5kB), which helps to conserve the limited option ROM
space. However, there is no guarantee that the PMM allocation will
succeed, and so we need to report the worst-case runtime size in the
PCI header.
Move the "shrunk ROM size" field from the PCI header to a new "iPXE
ROM header", allowing it to be accessed by ROM-manipulation utilities
such as disrom.pl.
Reported-by: Anton D. Kachalov <mouse@yandex-team.ru>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
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Suggested-by: Daniel P. Berrange <berrange@redhat.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
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Signed-off-by: Michael Brown <mcb30@ipxe.org>
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The only remaining useful function of makerom.pl is to correct the ROM
and PnP checksums; the PCI IDs are set at link time, and padding is
performed using padimg.pl.
Option::ROM already provides a facility for correcting the checksums,
so we may as well just use this instead.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
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