> Yep, I'm definitely trying to boot xen.gz (unless the grub menu
> extract I showed earlier was wrong)...
>
> Have tried adding printk's and for (;;) {} in kernel.c - that didn't help.
>
> The infinite loops in x86_32.S did make a difference at the following
> line though:
> 128 start_paging:
> 129 mov $idle_pg_table-__PAGE_OFFSET,%eax
> 130 mov %eax,%cr3
> 131 mov $0x80050033,%eax /* hi-to-lo: PG,AM,WP,NE,ET,MP,PE */
> 132 mov %eax,%cr0
> 133 jmp 1f
> 134 1: /* Install relocated selectors (FS/GS unused). */
> 135 lgdt gdt_descr
>
> Adding the 1: jump 1b before line 132 would make it hang; adding the
> line after 132 saw the computer rebooting continuously... I have no
> idea what to make of this though.
Hmm.... sounds like we don't work so well with Crusoe. :-)
Firstly, I don't suggest that looping between lines 132 and 133 is
very wise. The move to %cr0 and the following jump are supposed to
happen right after one another. Put the loop immediately after line
134.
Then, a few possibilities that might get you further:
Change line 131 to:
mov %cr0,%eax ; or $0x80050023,%eax
^
Note this digit changed!
Change line 133 to:
ljmp $(__HYPERVISOR_CS),$1f
Let me know how you get on with these changes.
Cheers,
Keir
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