Re: Loongson 2E boot failure

[Colin Watson]

On Tue, Jul 26, 2011 at 02:12:30PM +0100, Colin Watson wrote:
> A build of current trunk on mips-loongson with the addition of
> http://pastebin.com/download.php?i=uzXkNBTP fails to boot on a Loongson
> 2E system as follows:
> 
>   PMON> ifaddr rtl0 192.168.114.37
>   bootp=8000b968
>   PMON> load tftp://192.168.114.32/nephele/vmlinux
>   Loading file: tftp://192.168.114.32/nephele/vmlinux (elf)
>   0x801ffb60/538744 +
>   Entry address is 801ffb60
>   PMON> g
>      zero      at       v0       v1       a0       a1       a2       a3
>    00000000 00000000 00000000 00000000 00000001 aff7fd10 aff7fd18 80095ad0
>       t0       t1       t2       t3       t4       t5       t6       t7
>    00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
>       s0       s1       s2       s3       s4       s5       s6       s7
>    00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
>       t8       t9       k0       k1       gp       sp       s8       ra
>    00000000 00000000 00000000 00000000 00000000 aff7fcf0 00000000 80063f90

It looks like this register dump may be irrelevant; it seems to appear
even on successful boots.

Given the lack of output, we've been narrowing down the problem by
inserting infinite loops at strategic points and testing whether we get
back to a PMON prompt or not.  So far it looks as though the failure is
somewhere in grub_font_init.

-- 
Colin Watson                                       address@hidden