git: DragonFly_RELEASE_2_8 boot - Multiple changes to try to make cdboot work with more bioses
dillon at crater.dragonflybsd.org
Thu Oct 28 23:26:51 PDT 2010
Author: Matthew Dillon <dillon at apollo.backplane.com>
Date: Thu Oct 28 21:33:15 2010 -0700
boot - Multiple changes to try to make cdboot work with more bioses
* Go back to single sector read. This seems to help gigabyte bioses
(phenom x 6). Multi-sector reads tend to cause reads to fail with
a timeout for reasons unknown.
* Enable interrupts on start.
* (non operator) replace jcxz. It's a bit unclear whether this is an
issue or not but some assemblers do not generate the correct prefix
* Report read timeouts and delay 1 second before retrying. At the
very least this allows timeouts to be reported distinctly.
Summary of changes:
sys/boot/pc32/cdboot/cdboot.S | 54 +++++++++++++++++++++++++++++++----------
1 files changed, 41 insertions(+), 13 deletions(-)
DragonFly BSD source repository
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