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See below...
----- Original Message -----
Sent: Saturday, March 25, 2006 10:22
AM
Subject: Re: 2.6.14 - problem with
malta
On 3/24/06, Ralf Baechle <ralf@xxxxxxxxxxxxxx> wrote:
On
Fri, Mar 24, 2006 at 08:06:43PM +0530, Kishore K wrote:
>
hi
> I am trying to bring up the malta board (MIPS 4kec), using the
2.6.14 kernel
> downloaded from linux-mips. The kernel is built with
malta_defconfig located
> in arch/mips/configs. After loading this
kernel, board halts after printing
> "Linux Started
> Config
serial console: console=ttyS0, 38400n8r"
>
> Kernel is built
with the tool chain based on gcc 3.3.6, binutils 2.14.90.0.8
>
.
Note I generally don't test with HJ.Lu's toolchain at
all. It may be
broken for MIPS, I don't know. Also
due to known bugs in older toolchains
the minimal requirement is binutils
2.16; the vanilla FSF version from
ftp.gnu.org will do.
(2.15 will core
dump for some configurations but if it doesn't die, it seems
to do just
fine)
Thanks for the reply. I observed the same problem even when
compiled with tool chain based on gcc 3.4.4 binutils 2.15.97 and uclibc-
0.9.27. I 'll try with binutils 2.16. Please note that my malta is based on
4kc but not 4kec.
Ah. That makes a difference. In your
earlier mssage, you said you had a 4KEc.
The malta_defconfig file by default configures the
kernel to be built assuming
MIPS32 Release 2. The 4KEc is Release 2
compatible, but the older 4Kc and
5K cores are not. You need to tweak the
configuration such that
CONFIG_CPU_MIPS32_R1=y but CONFIG_CPU_MIPS32_R2 is
not set
(it's the other way around in the malta_defconfig
in the linux-mips git),
and, to be on the safe side, such that
CONFIG_SYS_HAS_CPU_MIPS32_R2
isn't set.
Your failure was so early that I was wondering what
on earth could have
nailed you, but if the kernel was built for Release
2, you would have had
"DI" (disable interrupts) instructions very early
on, and these could have
caused a fatal early exception on a Release 1
part.
Regards,
Kevin K.
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