Messages in this thread | | | Date | Thu, 05 Oct 2006 08:44:19 -0700 | From | "H. Peter Anvin" <> | Subject | Re: [PATCH 12/12] i386 boot: Add an ELF header to bzImage |
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Eric W. Biederman wrote: > In the lazy programmer school of fixes. > > I haven't really tested this in any configuration. > But reading video.S it does use variable in the bootsector. > It does seem to initialize the variables before use. > But obviously something is missed. > > By zeroing the uninteresting parts of the bootsector just after we > have determined we are loaded ok. We should ensure we are > always in a known state the entire time. > > Andrew if I am right about the cause of your video not working > when you set an enhanced video mode this should fix your boot > problem. >
I just noticed we're using string instructions in setup.S, without forcing DF = 0 anywhere. There should be a "cld" near the top.
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