Dear Robert and all friends,
A little more progress on my problem. I just found that if I disable the
hardware check-sum offloading options, the root file system could be mounted
then. In combination with the previous information of "UDP bad checksum" I
mentioned, it seems that you are absolutely right! The problem is on the
hardware checksum logic!
For this problem, maybe it will be better if xilinx could solve it. I am not
pretty sure if we can rely on a stricter timing constraint. After all, we are
not the original designer of the LL_TEMAC control logic.
Any other idea or suggestion? Thanks in advance.
BR
Ming
> Subject: RE: xilinx Ml405 NFS mount problem> From: [EMAIL PROTECTED]> To:
> [EMAIL PROTECTED]> CC: [EMAIL PROTECTED]; [email protected]> Date:
> Tue, 1 Apr 2008 10:50:18 -0600> > I think you may be suffering from the
> latest LL_TEMAC packet loss> problem. (NFS/UDP really does not like packet
> loss)> > > Let me guess. > You are using a base system from "Base System
> Builder Wizard"?> EDK 9.2i. Default syntheses/P&R options.> > I have seen a
> massive packet loss problems on my ML403 and two other> boards I have with an
> FX60.> > This is probably a hardware problem.> Xilinx has acknowledged an
> LL_TEMAC problem to me but has not provided a> fix. I have heard that things
> are better with EDK/ISE-10.1 but I have> not tested it.> > > The vendor of
> one of my boards (Pico) has fixed the problem on the FX60> by highly
> constraining the timing of the LL_TEMAC in map/PR. On my> ML403 I used
> similar constraints and it fixed the problem, but only if> the device is
> plugged in
to a GigE switch. The problem is still there> with the same .bit file on a
100-T switch. > > > Are you on a GigE switch?> > > > Rob.> > > > > > > On Tue,
2008-04-01 at 16:15 +0000, MingLiu wrote:> > Dear John,> > > > Thank you for
your replying. > > > > >It’s not obvious to me what the problem is as I don’t
see any driver> > failures. Have you >tried using a ramdisk and then seeing if
the> > network is working before using NFS root? > > > > Not yet. I will try it
soon. However from the information on the> > LL_TEMAC, it seems everything is
fine and it should work. > > > > > > > > >And I’m assuming you have used the
NFS root before so you know that> > it’s good for sure.> > > > > > > > >I test
on the ML405 with NFS root and haven’t seen this problem, but> > my setup is a
little different. I use DHCP rather than >a static IP,> > but other than that
it’s similar.> > > > > > > > Yes. I used NFS before. I can make sure my NFS
server works well. Also> > in principle, static
IP should get a same result as DHCP, I think. > > > > > > > > >How long has it
been since you pulled from the Xilinx Git tree?> > > > > > > > I just pulled
the Xilinx tree quite recently. I am using a latest> > kernel.> > > > > > > >
BR > > > > Ming> > > > > > > > > > > > And I’m assuming you have used the NFS
root before so you know> > that it’s good for sure.> > > > > > > > I test on
the ML405 with NFS root and haven’t seen this> > problem, but my setup is a
little different. I use DHCP> > rather than a static IP, but other than that
it’s similar.> > > > > > > > I’m assuming that you accidentally got 2 different
powerup> > outputs in the message below as the 1st stops and a 2nd starts> > in
the middle.> > > > > > > > How long has it been since you pulled from the
Xilinx Git> > tree?> > > > > > > > Thanks,> > > > John> > > > > > > > > >
______________________________________________________________> > From:
linuxppc-embedded-bounces> > [EMAIL PROTECTED]>
> [mailto:linuxppc-embedded-bounces> > [EMAIL PROTECTED] On Behalf Of
MingLiu> > Sent: Tuesday, April 01, 2008 8:12 AM> > To:
[email protected]> > Subject: xilinx Ml405 NFS mount problem> > > >
> > > > > > Dear friends,> > > > I am bringing up my kernel from Xilinx git
tree. Unfortunately I met some> > problem when mounting the root file system.
Here is the information> > listed. I will appreciate a lot if someone can help
me out of the trouble. > > Thanks a lot!> > > > > > loaded at: 00400000
0059F19C> > board data at: 0059D120 0059D19C> > relocated to: 004050C8
00405144> > zimage at: 00405F3F 0059C025> > avail ram: 005A0000 08000000> > > >
Linux/PPC load: root=/dev/nfs> >
ip=192.168.0.4:192.168.0.3:192.168.0.3:255.255.255.0 rw> >
nfsroot=192.168.0.3:/home/mingliu/ml403_rootfs console=ttyUL0,38400> > mem=32M>
> Uncompressing Linux...done.> > Now booting the kernel> > Linux version
2.6.24-rc8-xlnx-g1db182b8-dirty ([EMAIL PROTECTED]) (gcc version> > 3.
4.1) #7 Tue Apr 1 14:55:25 CEST 2008> > Xilinx Generic PowerPC board support
package (Xilinx ML405) (Virtex-4 FX)> > Zone PFN ranges:> > DMA 0 -> 8192> > >
> Normal 8192 -> 8192> > > > HighMem 8192 -> 8192> > Movable zone start PFN for
each node> > early_node_map[1] active PFN ranges> > 0: 0 -> 8192> > Built 1
zonelists in Zone order, mobility grouping on. Total pages: 8128> > Kernel
command line: root=/de v/nfs> >
ip=192.168.0.4:192.168.0.3:192.168.0.3:255.255.255.0 rw> >
nfsroot=192.168.0.3:/home/mingliu/ml403_rootfs console=ttyUL0,38400> > mem=32M>
> Xilinx INTC #0 at 0x81800000 mapped to 0xFDFFF000> > PID hash table entries:
128 (order: 7, 512 bytes)> > Console: colour dummy device 80x25> > Dentry cache
hash table entries: 4096 (order: 2, 16384 bytes)> > Inode-cache hash table
entries: 2048 (order: 1, 8192 bytes)> > Memory: 28884k available (2552k kernel
code, 944k data, 84k init, 0k highmem)> > SLUB: Genslabs=11, HWalign=32,
Order=0-1, MinObjects=4, CPUs=1, Nodes=1> > M
ount-cache hash table entries: 512> > net_namespace: 64 bytes> > NET:
Registered protocol family 16> > Registering device uartlite:0> > Fixup MAC
address for xilinx_lltemac:0> > Regis tering device xilinx_lltemac:0> > NET:
Registered protocol family 2> > IP route cache hash table entries: 1024 (order:
0, 4096 bytes)> > TCP established hash table entries: 1024 (order: 1, 8192
bytes)> > TCP bind hash table entries: 1024 (order: 0, 4096 bytes)> > TCP: Hash
tables configured (established 1024 bind 1024)> > TCP reno registered> > sysctl
table check failed: /kernel/l2cr .1.31 Missing strategy> > Call Trace:> >
[c1c0fe50] [c0008b70] show_stack+0x40/0x194 (unreliable)> > [c1c0fe90]
[c003aed4] set_fail+0x68/0x80> > [c1c0feb0] [c003b4ec]
sysctl_check_table+0x600/0x77c> > [c1c0fef0] [c003b4d4]
sysctl_check_table+0x5e8/0x77c> > [c1c0ff30] [c002605c]
register_sysctl_table+0x64/0xb4> > [c1c0ff50] [c034579c]
register_ppc_htab_sysctl+0x18/0x2c> > [c1c0ff60] [c034482c]
kernel_init+0x94/0x2bc
> > [c1c0fff0] [c0004d58] kernel_thread+0x44/0x60> > Installing knfsd
> > (copyright (C) 1996 [EMAIL PROTECTED]).> > fuse init (API version 7.9)> >
> > io scheduler noop registered> > io scheduler anticipatory registered> > io
> > scheduler deadline registered> > io scheduler cfq registered (default)> >
> > uartlite.0: ttyUL0 at MM IO 0x84000003 (irq = 3) is a uartlite> > console
> > [ttyUL0] enabled> > loop: module loaded> > nbd: registered device at major
> > 43> > xilinx_lltemac xilinx_lltemac.0: MAC address is now 0: a:35: 1: 2:
> > 3> > xilinx_lltemac xilinx_lltemac.0: XLlTemac: using DMA mode.> >
> > XLlTemac: Dma base address: phy: 0x84600100, virt: 0xc3008100> > XLlTemac:
> > buffer descriptor size: 32768 (0x8000)> > XLlTemac: Allocating DMA
> > descriptors with kmalloc<6>XLlTemac:> > (buffer_descriptor_init) phy:
> > 0x1d18000, virt: 0xc1d18000, size: 0x8000> > XTemac: PHY detected at
> > address 7.> > xilinx_lltemac xilinx_lltemac.0: eth0: Xilinx TEMAC at
> > 0x81C00000 mapped> > to 0xC3004000, irq=2> > console [net
con0] enabled> > Linux version 2.6.24-rc8-xlnx-g1db182b8-dirty ([EMAIL
PROTECTED]) (gcc version> > 3.4.1) #7 Tue Apr 1 14:55:25 CEST 2008> > > >
Xilinx Generic PowerPC board support package (Xilinx ML405)> > (Virtex-4 FX)> >
> > Zone PFN ranges:> > DMA 0 -> 8192> > Normal 8192 -> 8192> > HighMem 8192 ->
8192> > Movable zone start PFN for each node> > early_node_map[1] active PFN
range> > s> > 0: 0 -> 8192> > Built 1 zonelists in Zone order, mobility
grouping on. Total pages: 8128> > Kernel command line: root=/dev/nfs> >
ip=192.168.0.4:192.168.0.3:192.168.0.3:255.255.255.0 rw> >
nfsroot=192.168.0.3:/home/mingliu/ml403_rootfs console=ttyUL0,38400> > mem=32M>
> Xilinx INTC #0 at 0x81800000 mapped to 0xFDFFF000> > PID hash table entries:
128 (order: 7, 512 bytes)> > Console: colour dummy device 80x25> > Dentry cache
hash table entries: 4096 (order: 2, 16384 bytes)> > Inode-cache hash table
entries: 2048 (order: 1, 8192 bytes)> > Memory: 28884k available (2552k kernel
code, 944k data
, 84k init, 0k highmem)> > SLUB: Genslabs=11, HWalign=32, Order=0-1,
MinObjects=4, CPUs=1, Nodes=1> > Mount-cache hash table entries: 512> > n> >
et_namespace: 64 bytes> > NET: Registered protocol family 16> > Registering
device uartlite:0> > Fixup MAC address for xilinx_lltemac:0> > Registering
device xilinx_lltemac:0> > NET: Registered protocol family 2> > IP route cache
hash table entries: 1024 (order: 0, 4096 bytes)> > TCP established hash table
entries: 1024 (order: 1, 8192 bytes)> > TCP bind hash table entries: 1024> >
(order: 0, 4096 bytes)> > TCP: Hash tables configured (established 1024 bind
1024)> > TCP reno registered> > sysctl table check failed: /kernel/l2cr .1.31
Missing strategy> > Call Trace:> > [c1c0fe50] [c0008b70] show_stack+0x40/0x194
(unreliable)> > [c1c0fe90] [c003aed4] set_fail+0x68/0x80> > [c1c0feb0]
[c003b4ec] sysctl_check_table+0x600/0x77c> > [c1c0fef0] [c003b4d4] sysctl_c> >
heck_table+0x5e8/0x77c> > [c1c0ff30] [c002605c] register_sysctl_table+0x64
/0xb4> > [c1c0ff50] [c034579c] register_ppc_htab_sysctl+0x18/0x2c> >
[c1c0ff60] [c034482c] kernel_init+0x94/0x2bc> > [c1c0fff0] [c0004d58]
kernel_thread+0x44/0x60> > Installing knfsd (copyright (C) 1996 [EMAIL
PROTECTED]).> > fuse init (API version 7.9)> > io scheduler noop registered<> >
/SPAN>> > io scheduler anticipatory registered> > io scheduler deadline
registered> > io scheduler cfq registered (default)> > uartlite.0: ttyUL0 at
MMIO 0x84000003 (irq = 3) is a uartlite> > console [ttyUL0] enabled> > loop:
module loaded> > nbd: registered device at major 43> > xilinx_lltemac
xilinx_lltemac.0: MAC address is now 0: a:35: 1: 2: 3> > xilinx_lltemac
xilinx_lltemac.0: XLlTemac: using DMA mode.> > XLlTemac: Dma base address: phy:
0x84600100, virt: 0xc3008100> > XLlTemac: buffer descriptor size: 32768
(0x8000)> > XLlTemac: Allocating DMA descriptors with kmalloc<6>XLlTemac:> >
(buffer_descriptor_init) phy: 0x1d18000, virt: 0xc1d18000, size: 0x8000> >
XTemac: PHY detected at add
ress 7.> > xilinx_lltemac xilinx_lltemac.0: eth0: Xilinx TEMAC at 0x81C00000
mapped> > <> > SPAN style="FONT-SIZE: 12pt">to 0xC3004000, irq=2> > console
[netcon0] enabled> > netconsole: network logging started> > Generic platform
RAM MTD, (c) 2004 Simtec Electronics> > mice: PS/2 mouse device common for all
mice> > TCP cubic registered> > NET: Registered protocol family 1> > NET:
Registered protocol family 17> > RPC: Registered udp transport module.> > RPC:
Registered tcp transport module.> > eth0: XLlTemac: Options: 0x3fa> > eth0:
XLlTemac: allocating interrupt 0 for dma mode tx.> > eth0: XLlTemac: allocating
interrupt 1 for dma mode rx.> > eth0: XLlTemac: speed set to 1000Mb/s> > eth0:
XLlTemac: Send Threshold = 24, Receive Threshold = 4> > eth0: XLlTemac: Send
Wait bound = 254, Receive Wait bound = 254> > IP-Config: Complete:> > > >
device=eth0, addr=192.168.0.4, mask=255.255.255.0, gw=192.168.0.3,> >
host=192.168.0.4, domain=, nis-domain=(none),> > bootserver=192.168.0.3
, rootserver=192.168.0.3, rootpath=> > Looking up port of RPC 100003/2 on
192.168.0.3> > rpcbind: server 192.168.0.3 not responding, timed out> >
Root-NFS: Unable to get nfsd port number from server, using default> > Looking
up port of RPC 10000> > 5/1 on 192.168.0.3> > rpcbind: server 192.168.0.3 not
responding, timed out> > Root-NFS: Unable to get mountd port number from
server, using default> > mount: server 192.168.0.3 not responding, timed out> >
Root-NFS: Server returned error -5 while mounting /home/mingliu/ml403_rootfs> >
VFS: Unable to mount root fs via NFS, trying floppy.> > VFS: Cannot open root
device "nfs" or unknown-block(2,0)> > Please append a correct "root=" boot
option; here are > > the available> > partitions:> > Kernel panic - not
syncing: VFS: Unable to mount root fs on> > unknown-block(2,0)> > Rebooting in
180 seconds..> > > > > > BR> > Ming> > > > > > > > > >
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