root=/dev/nfs on sbc8260

root=/dev/nfs on sbc8260

[Andrew Dixon]

Hi everyone -

I'm having some trouble getting my root filesystem mounted via nfs on an
sbc8260.  I'm using Linux-2.4.15 and PPCBoot-1.1.2.  I have both
configured to use fcc2 for the ethernet but it looks like Linux can't
use the ether net or something.  In my server's log I see linux being
downloaded but there isn't even a request to mount the root file
system.  I've used this nfs server before with the same root filesystem
(the difference was that I was using a Mach kernel) so I am 99.44% sure
that the server is not the problem.

Any insight that people could give would be greatly appreciated.

thanks,
Andy

Here's the boot log:

-- BOOTP broadcast 1
got BOOTP packet (src=67, dst=68, len=300 want_len=300)
Filtering pkt = 0
Bootfile: est2/vmlinux
[BOOTP] Received fields:
NetOurSubnetMask	: 255.255.255.0
NetOurGatewayIP	: 172.16.1.254
NetOurHostName  : est2
NetOurRootPath  : est2/
Got good BOOTP
ARP broadcast 1
Got good ARP - start TFTP
TFTP from server 172.16.1.202; our IP address is 172.16.1.162
Filename 'est2/vmlinux'.
Load address: 0x140000
Loading:
#################################################################
	 ######################################
done
Bytes transferred = 526426 (8085a hex)
## Booting image at 00140000 ...
   Image Name:   2.4.16 for sbc8260
   Image Type:   PowerPC Linux Kernel Image (gzip compressed)
   Data Size:    526362 Bytes = 514 kB = 0 MB
   Load Address: 00000000
   Entry Point:  00000000
   Verifying Checksum ... OK
   Uncompressing Kernel Image ... OK
## Current stack ends at 0x03F5FC08 => set upper limit to 0x00800000
## cmdline at 0x007FFF00 ... 0x007FFF83
No initrd
bd_home     = 0x007ffeb0
memstart    = 0x00000000
memsize     = 0x04000000
flashstart  = 0x40000000
flashsize   = 0x00400000
flashoffset = 0x00040000
sramstart   = 0x00000000
sramsize    = 0x00000000
immr_base   = 0xf0000000
bootflags   = 0x00000001
intfreq     =    132 MHz
busfreq     =     33 MHz
ethaddr     = 00:A0:1E:90:15:55
IP addr     = 172.16.1.162
baudrate    =   9600 bps
getc        = 0x03fd0e50
tstc        = 0x03fd0e80
putc        = 0x03fd0da0
puts        = 0x03fd0e0c
printf      = 0x03fcb598
install_hdlr= 0x03fd1a5c
free_hdlr   = 0x03fd1afc
malloc      = 0x03fcbef4
free        = 0x03fcc3e8
## Transferring control to Linux (at address 00000000) ...
Linux version 2.4.16 (andrew.dixon@wolf) (gcc version 2.95.4 20010902
(Debian prerelease)) #18 Wed Dec 12 17:34:12 EST 2001
On node 0 totalpages: 16384
zone(0): 16384 pages.
zone(1): 0 pages.
zone(2): 0 pages.
Kernel command line: root=/dev/nfs rw nfsroot=172.16.1.202:est2/
ip=172.16.1.162:$s(serverip):172.16.1.254:255.255.255.0:
Warning: real time clock seems stuck!
Calibrating delay loop... 87.85 BogoMIPS
Memory: 63036k available (984k kernel code, 360k data, 56k init, 0k
highmem)
Dentry-cache hash table entries: 8192 (order: 4, 65536 bytes)
Inode-cache hash table entries: 4096 (order: 3, 32768 bytes)
Mount-cache hash table entries: 1024 (order: 1, 8192 bytes)
Buffer-cache hash table entries: 4096 (order: 2, 16384 bytes)
Page-cache hash table entries: 16384 (order: 4, 65536 bytes)
POSIX conformance testing by UNIFIX
Linux NET4.0 for Linux 2.4
Based upon Swansea University Computer Society NET3.039
Starting kswapd
i2c-core.o: i2c core module
i2c-dev.o: i2c /dev entries driver module
i2c-core.o: driver i2c-dev dummy driver registered.
i2c-proc.o version 2.6.1 (20010825)
CPM UART driver version 0.01
ttyS00 at 0x0000 is a SMC
ttyS01 at 0x0040 is a SMC
ttyS02 at 0x8100 is a SCC
ttyS03 at 0x8200 is a SCC
block: 128 slots per queue, batch=32
RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize
eth0: FCC ENET Version 0.2, 00:a0:1e:d0:15:55
fec: Phy @ 0x1, type 0x010f800b
loop: loaded (max 8 devices)
NET4: Linux TCP/IP 1.0 for NET4.0
IP Protocols: ICMP, UDP, TCP, IGMP
IP: routing cache hash table of 512 buckets, 4Kbytes
TCP: Hash tables configured (established 4096 bind 4096)
IP-Config: Complete:
      device=eth0, addr=172.16.1.162, mask=255.255.255.0,
gw=172.16.1.254,
     host=172.16.1.162, domain=, nis-domain=(none),
     bootserver=157.0.0.0, rootserver=172.16.1.202, rootpath=
NET4: Unix domain sockets 1.0/SMP for Linux NET4.0.
Looking up port of RPC 100003/2 on 172.16.1.202
portmap: server 172.16.1.202 not responding, timed out
Root-NFS: Unable to get nfsd port number from server, using default
Looking up port of RPC 100005/1 on 172.16.1.202
portmap: server 172.16.1.202 not responding, timed out
Root-NFS: Unable to get mountd port number from server, using default
mount: server 172.16.1.202 not responding, timed out
Root-NFS: Server returned error -5 while mounting est2/
VFS: Unable to mount root fs via NFS, trying floppy.
VFS: Cannot open root device "nfs" or 02:00
Please append a correct "root=" boot option
Kernel panic: VFS: Unable to mount root fs on 02:00
 <0>Rebooting in 180 seconds..

and Linux's .config:

#
# Automatically generated make config: don't edit
#
# CONFIG_UID16 is not set
# CONFIG_RWSEM_GENERIC_SPINLOCK is not set
CONFIG_RWSEM_XCHGADD_ALGORITHM=y
CONFIG_HAVE_DEC_LOCK=y

#
# Code maturity level options
#
CONFIG_EXPERIMENTAL=y

#
# Loadable module support
#
# CONFIG_MODULES is not set

#
# Platform support
#
CONFIG_PPC=y
CONFIG_PPC32=y
CONFIG_6xx=y
# CONFIG_4xx is not set
# CONFIG_POWER3 is not set
# CONFIG_POWER4 is not set
# CONFIG_8xx is not set
CONFIG_8260=y
CONFIG_PPC_STD_MMU=y
CONFIG_SERIAL_CONSOLE=y
CONFIG_EST8260=y
# CONFIG_SMP is not set

#
# General setup
#
# CONFIG_HIGHMEM is not set
# CONFIG_ISA is not set
# CONFIG_EISA is not set
# CONFIG_SBUS is not set
# CONFIG_MCA is not set
# CONFIG_PCI is not set
CONFIG_NET=y
CONFIG_SYSCTL=y
CONFIG_SYSVIPC=y
# CONFIG_BSD_PROCESS_ACCT is not set
CONFIG_KCORE_ELF=y
CONFIG_BINFMT_ELF=y
CONFIG_KERNEL_ELF=y
CONFIG_BINFMT_MISC=y
# CONFIG_HOTPLUG is not set
# CONFIG_PCMCIA is not set

#
# Parallel port support
#
# CONFIG_PARPORT is not set
# CONFIG_PPC_RTC is not set
CONFIG_CMDLINE_BOOL=y
CONFIG_CMDLINE="root=/dev/nfs console=/dev/ttyS0 ip=on rw"

#
# Memory Technology Devices (MTD)
#
# CONFIG_MTD is not set

#
# Plug and Play configuration
#
# CONFIG_PNP is not set
# CONFIG_ISAPNP is not set

#
# Block devices
#
# CONFIG_BLK_DEV_FD is not set
# CONFIG_BLK_DEV_XD is not set
# CONFIG_PARIDE is not set
# CONFIG_BLK_CPQ_DA is not set
# CONFIG_BLK_CPQ_CISS_DA is not set
# CONFIG_BLK_DEV_DAC960 is not set
CONFIG_BLK_DEV_LOOP=y
# CONFIG_BLK_DEV_NBD is not set
CONFIG_BLK_DEV_RAM=y
CONFIG_BLK_DEV_RAM_SIZE=4096
CONFIG_BLK_DEV_INITRD=y

#
# Multi-device support (RAID and LVM)
#
# CONFIG_MD is not set
# CONFIG_BLK_DEV_MD is not set
# CONFIG_MD_LINEAR is not set
# CONFIG_MD_RAID0 is not set
# CONFIG_MD_RAID1 is not set
# CONFIG_MD_RAID5 is not set
# CONFIG_MD_MULTIPATH is not set
# CONFIG_BLK_DEV_LVM is not set

#
# Networking options
#
CONFIG_PACKET=y
# CONFIG_PACKET_MMAP is not set
CONFIG_NETLINK=y
# CONFIG_RTNETLINK is not set
# CONFIG_NETLINK_DEV is not set
# CONFIG_NETFILTER is not set
# CONFIG_FILTER is not set
CONFIG_UNIX=y
CONFIG_INET=y
CONFIG_IP_MULTICAST=y
# CONFIG_IP_ADVANCED_ROUTER is not set
CONFIG_IP_PNP=y
CONFIG_IP_PNP_DHCP=y
CONFIG_IP_PNP_BOOTP=y
CONFIG_IP_PNP_RARP=y
# CONFIG_NET_IPIP is not set
# CONFIG_NET_IPGRE is not set
# CONFIG_IP_MROUTE is not set
# CONFIG_INET_ECN is not set
CONFIG_SYN_COOKIES=y
# CONFIG_IPV6 is not set
# CONFIG_KHTTPD is not set
# CONFIG_ATM is not set
# CONFIG_VLAN_8021Q is not set

#
#
#
# CONFIG_IPX is not set
# CONFIG_ATALK is not set
# CONFIG_DECNET is not set
# CONFIG_BRIDGE is not set
# CONFIG_X25 is not set
# CONFIG_LAPB is not set
# CONFIG_LLC is not set
# CONFIG_NET_DIVERT is not set
# CONFIG_ECONET is not set
# CONFIG_WAN_ROUTER is not set
# CONFIG_NET_FASTROUTE is not set
# CONFIG_NET_HW_FLOWCONTROL is not set

#
# QoS and/or fair queueing
#
# CONFIG_NET_SCHED is not set

#
# ATA/IDE/MFM/RLL support
#
# CONFIG_IDE is not set
# CONFIG_BLK_DEV_IDE_MODES is not set
# CONFIG_BLK_DEV_HD is not set

#
# SCSI support
#
# CONFIG_SCSI is not set

#
# Network device support
#
CONFIG_NETDEVICES=y

#
# ARCnet devices
#
# CONFIG_ARCNET is not set
# CONFIG_DUMMY is not set
# CONFIG_BONDING is not set
# CONFIG_EQUALIZER is not set
# CONFIG_TUN is not set
# CONFIG_ETHERTAP is not set

#
# Ethernet (10 or 100Mbit)
#
CONFIG_NET_ETHERNET=y
# CONFIG_MACE is not set
# CONFIG_BMAC is not set
# CONFIG_GMAC is not set
# CONFIG_OAKNET is not set
# CONFIG_SUNLANCE is not set
# CONFIG_SUNBMAC is not set
# CONFIG_SUNQE is not set
# CONFIG_SUNLANCE is not set
# CONFIG_SUNGEM is not set
# CONFIG_NET_VENDOR_3COM is not set
# CONFIG_LANCE is not set
# CONFIG_NET_VENDOR_SMC is not set
# CONFIG_NET_VENDOR_RACAL is not set
# CONFIG_NET_ISA is not set
# CONFIG_NET_PCI is not set
# CONFIG_NET_POCKET is not set

#
# Ethernet (1000 Mbit)
#
# CONFIG_ACENIC is not set
# CONFIG_DL2K is not set
# CONFIG_MYRI_SBUS is not set
# CONFIG_NS83820 is not set
# CONFIG_HAMACHI is not set
# CONFIG_YELLOWFIN is not set
# CONFIG_SK98LIN is not set
# CONFIG_FDDI is not set
# CONFIG_HIPPI is not set
# CONFIG_PLIP is not set
# CONFIG_PPP is not set
# CONFIG_SLIP is not set

#
# Wireless LAN (non-hamradio)
#
# CONFIG_NET_RADIO is not set

#
# Token Ring devices
#
# CONFIG_TR is not set
# CONFIG_NET_FC is not set
# CONFIG_RCPCI is not set
# CONFIG_SHAPER is not set

#
# Wan interfaces
#
# CONFIG_WAN is not set

#
# Amateur Radio support
#
# CONFIG_HAMRADIO is not set

#
# IrDA (infrared) support
#
# CONFIG_IRDA is not set

#
# ISDN subsystem
#
# CONFIG_ISDN is not set

#
# Old CD-ROM drivers (not SCSI, not IDE)
#
# CONFIG_CD_NO_IDESCSI is not set

#
# Console drivers
#
# CONFIG_VGA_CONSOLE is not set

#
# Frame-buffer support
#
# CONFIG_FB is not set

#
# Input core support
#
# CONFIG_INPUT is not set
# CONFIG_INPUT_KEYBDEV is not set
# CONFIG_INPUT_MOUSEDEV is not set
# CONFIG_INPUT_JOYDEV is not set
# CONFIG_INPUT_EVDEV is not set

#
# Macintosh device drivers
#

#
# Character devices
#
# CONFIG_VT is not set
# CONFIG_SERIAL is not set
# CONFIG_SERIAL_EXTENDED is not set
# CONFIG_SERIAL_NONSTANDARD is not set
# CONFIG_UNIX98_PTYS is not set

#
# I2C support
#
CONFIG_I2C=y
# CONFIG_I2C_ALGOBIT is not set
# CONFIG_I2C_ALGOPCF is not set
CONFIG_I2C_CHARDEV=y
CONFIG_I2C_PROC=y

#
# Mice
#
# CONFIG_BUSMOUSE is not set
# CONFIG_MOUSE is not set

#
# Joysticks
#
# CONFIG_INPUT_GAMEPORT is not set

#
# Input core support is needed for gameports
#

#
# Input core support is needed for joysticks
#
# CONFIG_QIC02_TAPE is not set

#
# Watchdog Cards
#
# CONFIG_WATCHDOG is not set
# CONFIG_INTEL_RNG is not set
# CONFIG_NVRAM is not set
# CONFIG_RTC is not set
# CONFIG_DTLK is not set
# CONFIG_R3964 is not set
# CONFIG_APPLICOM is not set

#
# Ftape, the floppy tape device driver
#
# CONFIG_FTAPE is not set
# CONFIG_AGP is not set
# CONFIG_DRM is not set

#
# Multimedia devices
#
# CONFIG_VIDEO_DEV is not set

#
# File systems
#
# CONFIG_QUOTA is not set
# CONFIG_AUTOFS_FS is not set
# CONFIG_AUTOFS4_FS is not set
# CONFIG_REISERFS_FS is not set
# CONFIG_REISERFS_CHECK is not set
# CONFIG_REISERFS_PROC_INFO is not set
# CONFIG_ADFS_FS is not set
# CONFIG_ADFS_FS_RW is not set
# CONFIG_AFFS_FS is not set
# CONFIG_HFS_FS is not set
# CONFIG_BFS_FS is not set
# CONFIG_EXT3_FS is not set
# CONFIG_JBD is not set
# CONFIG_JBD_DEBUG is not set
# CONFIG_FAT_FS is not set
# CONFIG_MSDOS_FS is not set
# CONFIG_UMSDOS_FS is not set
# CONFIG_VFAT_FS is not set
# CONFIG_EFS_FS is not set
# CONFIG_JFFS_FS is not set
# CONFIG_JFFS2_FS is not set
# CONFIG_CRAMFS is not set
# CONFIG_TMPFS is not set
CONFIG_RAMFS=y
# CONFIG_ISO9660_FS is not set
# CONFIG_JOLIET is not set
# CONFIG_ZISOFS is not set
# CONFIG_MINIX_FS is not set
# CONFIG_VXFS_FS is not set
# CONFIG_NTFS_FS is not set
# CONFIG_NTFS_RW is not set
# CONFIG_HPFS_FS is not set
CONFIG_PROC_FS=y
# CONFIG_DEVFS_FS is not set
# CONFIG_DEVFS_MOUNT is not set
# CONFIG_DEVFS_DEBUG is not set
# CONFIG_DEVPTS_FS is not set
# CONFIG_QNX4FS_FS is not set
# CONFIG_QNX4FS_RW is not set
# CONFIG_ROMFS_FS is not set
CONFIG_EXT2_FS=y
# CONFIG_SYSV_FS is not set
# CONFIG_UDF_FS is not set
# CONFIG_UDF_RW is not set
# CONFIG_UFS_FS is not set
# CONFIG_UFS_FS_WRITE is not set

#
# Network File Systems
#
# CONFIG_CODA_FS is not set
# CONFIG_INTERMEZZO_FS is not set
CONFIG_NFS_FS=y
CONFIG_NFS_V3=y
CONFIG_ROOT_NFS=y
# CONFIG_NFSD is not set
# CONFIG_NFSD_V3 is not set
CONFIG_SUNRPC=y
CONFIG_LOCKD=y
CONFIG_LOCKD_V4=y
CONFIG_SMB_FS=y
# CONFIG_SMB_NLS_DEFAULT is not set
# CONFIG_NCP_FS is not set
# CONFIG_NCPFS_PACKET_SIGNING is not set
# CONFIG_NCPFS_IOCTL_LOCKING is not set
# CONFIG_NCPFS_STRONG is not set
# CONFIG_NCPFS_NFS_NS is not set
# CONFIG_NCPFS_OS2_NS is not set
# CONFIG_NCPFS_SMALLDOS is not set
# CONFIG_NCPFS_NLS is not set
# CONFIG_NCPFS_EXTRAS is not set
# CONFIG_ZISOFS_FS is not set
# CONFIG_ZLIB_FS_INFLATE is not set

#
# Partition Types
#
# CONFIG_PARTITION_ADVANCED is not set
CONFIG_MSDOS_PARTITION=y
CONFIG_SMB_NLS=y
CONFIG_NLS=y

#
# Native Language Support
#
CONFIG_NLS_DEFAULT="n"
# CONFIG_NLS_CODEPAGE_437 is not set
# CONFIG_NLS_CODEPAGE_737 is not set
# CONFIG_NLS_CODEPAGE_775 is not set
# CONFIG_NLS_CODEPAGE_850 is not set
# CONFIG_NLS_CODEPAGE_852 is not set
# CONFIG_NLS_CODEPAGE_855 is not set
# CONFIG_NLS_CODEPAGE_857 is not set
# CONFIG_NLS_CODEPAGE_860 is not set
# CONFIG_NLS_CODEPAGE_861 is not set
# CONFIG_NLS_CODEPAGE_862 is not set
# CONFIG_NLS_CODEPAGE_863 is not set
# CONFIG_NLS_CODEPAGE_864 is not set
# CONFIG_NLS_CODEPAGE_865 is not set
# CONFIG_NLS_CODEPAGE_866 is not set
# CONFIG_NLS_CODEPAGE_869 is not set
# CONFIG_NLS_CODEPAGE_936 is not set
# CONFIG_NLS_CODEPAGE_950 is not set
# CONFIG_NLS_CODEPAGE_932 is not set
# CONFIG_NLS_CODEPAGE_949 is not set
# CONFIG_NLS_CODEPAGE_874 is not set
# CONFIG_NLS_ISO8859_8 is not set
# CONFIG_NLS_CODEPAGE_1251 is not set
# CONFIG_NLS_ISO8859_1 is not set
# CONFIG_NLS_ISO8859_2 is not set
# CONFIG_NLS_ISO8859_3 is not set
# CONFIG_NLS_ISO8859_4 is not set
# CONFIG_NLS_ISO8859_5 is not set
# CONFIG_NLS_ISO8859_6 is not set
# CONFIG_NLS_ISO8859_7 is not set
# CONFIG_NLS_ISO8859_9 is not set
# CONFIG_NLS_ISO8859_13 is not set
# CONFIG_NLS_ISO8859_14 is not set
# CONFIG_NLS_ISO8859_15 is not set
# CONFIG_NLS_KOI8_R is not set
# CONFIG_NLS_KOI8_U is not set
# CONFIG_NLS_UTF8 is not set

#
# Sound
#
# CONFIG_SOUND is not set

#
# MPC8260 Communication Options
#
# CONFIG_SCC_ENET is not set
CONFIG_FEC_ENET=y
# CONFIG_FCC1_ENET is not set
CONFIG_FCC2_ENET=y
# CONFIG_FCC3_ENET is not set

#
# USB support
#
# CONFIG_USB is not set

#
# USB Controllers
#
# CONFIG_USB_UHCI is not set
# CONFIG_USB_UHCI_ALT is not set
# CONFIG_USB_OHCI is not set

#
# USB Device Class drivers
#
# CONFIG_USB_AUDIO is not set
# CONFIG_USB_BLUETOOTH is not set
# CONFIG_USB_STORAGE is not set
# CONFIG_USB_STORAGE_DEBUG is not set
# CONFIG_USB_STORAGE_DATAFAB is not set
# CONFIG_USB_STORAGE_FREECOM is not set
# CONFIG_USB_STORAGE_ISD200 is not set
# CONFIG_USB_STORAGE_DPCM is not set
# CONFIG_USB_STORAGE_HP8200e is not set
# CONFIG_USB_STORAGE_SDDR09 is not set
# CONFIG_USB_STORAGE_JUMPSHOT is not set
# CONFIG_USB_ACM is not set
# CONFIG_USB_PRINTER is not set

#
# USB Human Interface Devices (HID)
#

#
#   Input core support is needed for USB HID
#

#
# USB Imaging devices
#
# CONFIG_USB_DC2XX is not set
# CONFIG_USB_MDC800 is not set
# CONFIG_USB_SCANNER is not set
# CONFIG_USB_MICROTEK is not set
# CONFIG_USB_HPUSBSCSI is not set

#
# USB Multimedia devices
#

#
#   Video4Linux support is needed for USB Multimedia device support
#

#
# USB Network adaptors
#
# CONFIG_USB_PEGASUS is not set
# CONFIG_USB_KAWETH is not set
# CONFIG_USB_CATC is not set
# CONFIG_USB_CDCETHER is not set
# CONFIG_USB_USBNET is not set

#
# USB port drivers
#
# CONFIG_USB_USS720 is not set

#
# USB Serial Converter support
#
# CONFIG_USB_SERIAL is not set
# CONFIG_USB_SERIAL_GENERIC is not set
# CONFIG_USB_SERIAL_BELKIN is not set
# CONFIG_USB_SERIAL_WHITEHEAT is not set
# CONFIG_USB_SERIAL_DIGI_ACCELEPORT is not set
# CONFIG_USB_SERIAL_EMPEG is not set
# CONFIG_USB_SERIAL_FTDI_SIO is not set
# CONFIG_USB_SERIAL_VISOR is not set
# CONFIG_USB_SERIAL_IR is not set
# CONFIG_USB_SERIAL_EDGEPORT is not set
# CONFIG_USB_SERIAL_KEYSPAN_PDA is not set
# CONFIG_USB_SERIAL_KEYSPAN is not set
# CONFIG_USB_SERIAL_KEYSPAN_USA28 is not set
# CONFIG_USB_SERIAL_KEYSPAN_USA28X is not set
# CONFIG_USB_SERIAL_KEYSPAN_USA28XA is not set
# CONFIG_USB_SERIAL_KEYSPAN_USA28XB is not set
# CONFIG_USB_SERIAL_KEYSPAN_USA19 is not set
# CONFIG_USB_SERIAL_KEYSPAN_USA18X is not set
# CONFIG_USB_SERIAL_KEYSPAN_USA19W is not set
# CONFIG_USB_SERIAL_KEYSPAN_USA49W is not set
# CONFIG_USB_SERIAL_MCT_U232 is not set
# CONFIG_USB_SERIAL_PL2303 is not set
# CONFIG_USB_SERIAL_CYBERJACK is not set
# CONFIG_USB_SERIAL_XIRCOM is not set
# CONFIG_USB_SERIAL_OMNINET is not set

#
# USB Miscellaneous drivers
#
# CONFIG_USB_RIO500 is not set

#
# Bluetooth support
#
# CONFIG_BLUEZ is not set

#
# Kernel hacking
#
# CONFIG_MAGIC_SYSRQ is not set
# CONFIG_KGDB is not set
# CONFIG_XMON is not set

** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/

Re: root=/dev/nfs on sbc8260

[Dan Malek]

Andrew Dixon wrote:


> Any insight that people could give would be greatly appreciated.
It's either the FCC or the server.  Since you have the FCC working in PPCBoot
and I've used FCC2 on other boards, I may assume the driver is working.

Since you have DHCP/BOOTP configured in the kernel, do you have a dhcp server
and can you simply try 'root=/dev/nfs rw ip=any' and see if you can talk to
dhcp?  You could also use your favorite network sniffer to see what traffic,
if any, went along the network.

Thanks.

	-- Dan


** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/

Re: root=/dev/nfs on sbc8260

[Andrew Dixon]

Here is something very strange.  In PPCBoot I set the ethernet address
to 00:a0:1e:90:15:55.

=> printenv
<snip>
ethaddr=00:a0:1e:90:15:55
<snip>

And PPCBoot uses bootp to get lots of good information about who the
board is.

Now, as I watch Linux try to come up I see the following:

eth0: FCC ENET Version 0.2, 00:a0:1e:d0:15:55
fec: Phy @ 0x1, type 0x000fd04b

Notice that the ethernet address has changed.  Very odd.  I assume that
this info should be passed from PPCBoot to Linux via the board info data
structure bd_t.

Has anyone else seen this before?

Thanks,
Andy

** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/

Re: root=/dev/nfs on sbc8260

[jtm]

On Thu, Dec 13, 2001 at 10:41:40AM -0500, Andrew Dixon wrote:
>
> Here is something very strange.  In PPCBoot I set the ethernet address
> to 00:a0:1e:90:15:55.
>
> ....
>
> Now, as I watch Linux try to come up I see the following:
>
> ....
>
> Has anyone else seen this before?

In the ethernet driver for the FCC, it changes the MAC address based on
the FCC number.h

In a standard 2.4.4 kernel, arch/ppc/8260_io/fcc_enet.c is the
following code (around line 1315):
       /* Set Ethernet station address.
         *
         * This is supplied in the board information structure, so we
         * copy that into the controller.
         * So, far we have only been given one Ethernet address. We make
         * it unique by setting a few bits in the upper byte of the
         * non-static part of the address.
         */
        eap = (unsigned char *)&(ep->fen_paddrh);
        for (i=5; i>=0; i--) {
                if (i == 3) {
                        dev->dev_addr[i] = bd->bi_enetaddr[i];
                        dev->dev_addr[i] |= (1 << (7 - fip->fc_fccnum));
                        *eap++ = dev->dev_addr[i];
                }
                else {
                        *eap++ = dev->dev_addr[i] = bd->bi_enetaddr[i];
                }
        }


You can here see that the ethernet port's MAC address is dependent on
the fcc number.

--
Jay Monkman	    The truth knocks on the door and you say "Go away, I'm
monkman@jump.net    looking for the truth," and so it goes away. Puzzling.
		     - from _Zen_and_the_Art_of_Motorcycle_Maintenance_

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