On Tue, Mar 05, 2013 at 12:14:56PM -0800, Yinghai Lu wrote: > On Tue, Mar 5, 2013 at 11:52 AM, Robin Holt <h...@sgi.com> wrote: > > That fixed it for me. > > > > Can you help me understand why sentinel is non-zero? It looks to me > > like 3.14 allocates 16kB plus strlen of the command line, zeros it, > > and then proceeds to fill in fields, some differing from what is in the > > boot_params structure. That said, it looks like the sentinel field > > should remain 0. I am still trying to understand, but if this patch > > makes it in, I am happy. > > sentinel is out of setup_header. > it is 0x1ef. setup_header is from 0x1f1. > > it will be 0xff from arch/x86/boot/header.S for bzImage. > > .section ".header", "a" > .globl sentinel > sentinel: .byte 0xff, 0xff /* Used to detect broken loaders */ > > elilo first copy first page, and get 0x1f1 for setup code sector number. > then it copies all setup code ( include setup header). > > after that sysdeps_create_boot_params will copy first two pages to bp... > CopyMem(bp, param_start, 0x2000);
Had not gotten that far in my understanding of elilo. Now I understand. Robin -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
