Hi,
-----Original Message-----
From: Zhaobin Zhu [mailto:zzhu@emc.com]
Sent: Friday, September 22, 2000 11:47 PM
Cc: linuxppc-embedded@lists.linuxppc.org
Subject: Sandpoint/PPMC750 MPPMC7400
Hi,
I has been trying to boot Hardhat (CDK1.2)linux kernel on
Sandpoint/PPMC750. Everytime the boot gets stuck at
.......
quoted
Uncompressing Linux...done.
Now booting the kernel
Do you use 2.3.16 kernel ? The kernel stops here may be caused by MMU_init,
please check the arch/ppc/kernel/head.S and arch/ppc/mm/init.c. (you can use
ppc_md.progress for printing messages)
Also what COP-based debug tools are available for
PPMC750/7400 on sandpoint.
Somebody mentioned Arbitron and EST.
Did anybody have experience with them and what you recommend ?
Here we have Arbitiron BDI2000, it is a little bit helpful but I think that
reading the kernel source is the most useful way, or you can try xmon.
Thanks,
Haitao Zhang
** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
"ZHANG,HAI-TAO (Non-A-China,ex1)" wrote:
quoted
I has been trying to boot Hardhat (CDK1.2)linux kernel on
Sandpoint/PPMC750. Everytime the boot gets stuck at
.......
quoted
Uncompressing Linux...done.
Now booting the kernel
Do you use 2.3.16 kernel ? The kernel stops here may be caused by MMU_init,
please check the arch/ppc/kernel/head.S and arch/ppc/mm/init.c. (you can use
ppc_md.progress for printing messages)
Hi HAI-TAO,
The kernel I use is Linux version 2.4.0-test2 .
I enabled Sandpoint_debug. Here is the __most farther__ the boot goes:
-----
DINK32_ARTHUR >>go 900000
loaded at: 00900000 00914E20
relocated to: 00800000 00814E20
zimage at: 0090B000 00989621
avail ram: 00400000 00800000
Linux/PPC load: root=nfs
Uncompressing Linux...done.
Now booting the kernel
id mach(): doneMMU:enterMMU:hash inithash:enterhash:find
piecehash:patchhash:doneMMU:mapinMMU:setbatMMU:exitsetup_arch
: entersetup_arch: bootmemarch: exit
------
Observed problems:
1) The boot is no consistent.
Sometime it hangs at
Now booting the kernel
id mach():
Sometime it hangs at
Now booting the kernel
id mach(): doneMMU:enterMMU:hash inithash:enterhash:find piece
2) By luck, the most farther it reaches
Now booting the kernel
id mach(): doneMMU:enterMMU:hash inithash:enterhash:find
piecehash:patchhash:doneMMU:mapinMMU:setbatMMU:exitsetup_arch
: entersetup_arch: bootmemarch: exit
It hangs there after entering free_area_init().
I can't find the rountine under /arch/ppc/. So it must be an arch
independent
rountine.
Is it defined in mm/page_alloc.c:void __init free_area_init(unsigned long
*zones_size) ?
From what I described, does anybody have a hint on what the problem is with
PPMC750 ?
The boot goes fine with PPMC7400 on Sandpoint.
Thanks,
--
Zhaobin Zhu
zzhu@emc.com 508-435-1000 x12823
Hardware Engineering, EMC Corporation
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