Failed to mount rootfs
Bizhan Gholikhamseh (bgholikh)
bgholikh at cisco.com
Fri Jan 25 08:53:47 EST 2008
Hi All,
Our custom board is leveraged from MPC8541cds from freescale.
We have been running Linux 2.6.11 on it recently I have tried to boot
the system with the latest Linux 2.6.22-rc4 from PowerPC git tree.
I did ported the libfdt to our older version of the uboot and were able
to
resolve the device tree. After downloading the uImage, dtb file and
ramdisk
I use the bootm command to boot the linux, but it failes..
........................................................................
...................
driver initialized: 16 RAM disks of 4096K size 1024 blocksize
VFS: Cannot open root device "<NULL>" or unknown-block(0,0) 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(0,0) Rebooting in 180 seconds..
........................................................................
...............
During boot I observeed that the "kernel Command Line:" is empty, is
this parameter should be supplied by fdt also?
I have copied the boot log and dump of the device tree below, Any help
greatly appreicate it.
Thanks,
Last Reset Type: Power On
FLASH: 8 MB
L2 cache 256KB:enabled
In: serial
Out: serial
Err: serial
Net: TSEC0.
IDE: Compact Flash: Bus 0: OK
Device 0: Model: STI Flash 7.4.0 Firm: 01.25.06 Ser#: STI
J106306241050439
Type: Hard Disk
Capacity: 245.0 MB = 0.2 GB (501760 x 512) System watchdog: is now
stopped.
=> printenv
bootcmd=setenv bootargs root=/dev/hda2 rw console=$consoledev,$baudrate
$othbootargs;setenv autostart yes;diskboot $l; nfsboot=setenv bootargs
root=/dev/nfs rw nfsroot=$serverip:$rootpath
ip=$ipaddr:$serverip:$gatewayip:$netmask:$hostnar
bootdelay=2
baudrate=115200
loads_echo=1
rootpath=/nfsroot
hostname=unknown
loadaddr=1000000
netdev=eth0
consoledev=ttyS1
ramdiskaddr=1000000
ramdiskfile=ramdisk.UBoot
ethact=TSEC0
firstboot=no
bootargs=root=/dev/ram rw console=ttyS1,115200 fdfile=biz3.dtb
bootfile=uImage
ramboot=setenv bootargs root=/dev/ram rw console=ttyS1,115200
filesize=80000 fileaddr=100000
ipaddr=172.28.176.13
serverip=172.28.176.140
stdin=serial
stdout=serial
stderr=serial
ethaddr=00:18:18:8f:a6:ac
eth1addr=00:18:18:8f:a6:ad
eth2addr=00:18:18:8f:a6:ae
pid=CTS-CODEC-PRIM=
serial=FSJC0537522
ver_id=V01
hwver=0400
ver=U-boot 1.1.2(pq3-20050113-0) (Jan 20 2008 - 18:03:58)
Environment size: 1050/8188 bytes
=> tftp 100000 uImage
Using TSEC0 device
TFTP from server 172.28.176.140; our IP address is 172.28.176.13
Filename 'uImage'.
Load address: 0x100000
Loading:
#################################################################
###########################################################
done
Bytes transferred = 629989 (99ce5 hex)
=> tftp 2000000 ramdisk.u-boot
Using TSEC0 device
TFTP from server 172.28.176.140; our IP address is 172.28.176.13
Filename 'ramdisk.u-boot'.
Load address: 0x2000000
Loading:
#################################################################
#################################################################
#################################################################
#################################################################
#################################################################
#################################################################
#################################################################
#################################################################
#################################################################
#################################################################
done
Bytes transferred = 15622378 (ee60ea hex) => tftp c00000 board.dtb Using
TSEC0 device TFTP from server 172.28.176.140; our IP address is
172.28.176.13 Filename 'board.dtb'.
Load address: 0xc00000
Loading: #
done
Bytes transferred = 4273 (10b1 hex)
=> bootm 100000 2000000 c00000
## Booting image at 00100000 ...
Image Name: Linux-2.6.22-rc4-geff2ebd2-dirty
Image Type: PowerPC Linux Kernel Image (gzip compressed)
Data Size: 629925 Bytes = 615.2 kB
Load Address: 00000000
Entry Point: 00000000
Verifying Checksum ... OK
Uncompressing Kernel Image ... OK
>>> inside do_bootm_linux <<<<
## Loading RAMDisk Image at 02000000 ...
Image Name: MPC85xxCDS MTWKS Ramdisk
Image Type: PowerPC Linux RAMDisk Image (gzip compressed)
Data Size: 15622314 Bytes = 14.9 MB
Load Address: 00000000
Entry Point: 00000000
Verifying Checksum ... OK
Booting using flat device tree at 0xc00000
Loading Ramdisk to 1ef33000, end 1fe190aa ... OK vfpga watchdog not
supported in this CTS version. Keeping watchdog disabled System
watchdog: is now stopped.
## Transferring control to Kernel (at address 00000000) ...
Using MPC85xx CDS machine description
Memory CAM mapping: CAM0=256Mb, CAM1=256Mb, CAM2=0Mb residual: 0Mb Linux
version 2.6.22-rc4-geff2ebd2-dirty (bizhan at bizhanhost.cisco.com) (gcc
version 3.4.3) #6 Sun Jan 20 22:51:26 PST8
setup_arch: bootmem
mpc85xx_cds_setup_arch()
CDS Version = 0xff in slot 4
Found MPC85xx PCI host bridge at 0x00000000e0008000. Firmware bus
number: 0->0 Found MPC85xx PCI host bridge at 0x00000000e0009000.
Firmware bus number: 0->0
arch: exit
Zone PFN ranges:
DMA 0 -> 131072
Normal 131072 -> 131072
early_node_map[1] active PFN ranges
0: 0 -> 131072
Built 1 zonelists. Total pages: 130048
Kernel command line:
mpic: Setting up MPIC " OpenPIC " version 1.2 at e0040000, max 1 CPUs
mpic: ISU size: 4, shift: 2, mask: 3
mpic: Initializing for 60 sources
PID hash table entries: 2048 (order: 11, 8192 bytes) Dentry cache hash
table entries: 65536 (order: 6, 262144 bytes) Inode-cache hash table
entries: 32768 (order: 5, 131072 bytes)
Memory: 502528k/524288k available (1224k kernel code, 21196k reserved,
64k data, 108k bss, 116k init) Mount-cache hash table entries: 512
device-tree: Duplicate name in /, renamed to "chosen#1"
PCI: Probing PCI hardware
PCI: Cannot allocate resource region 0 of device 0000:00:16.0
PCI: Cannot allocate resource region 1 of device 0000:00:16.0
PCI: Cannot allocate resource region 0 of device 0000:00:19.0
PCI: Cannot allocate resource region 2 of device 0000:00:19.0
PCI: Cannot allocate resource region 0 of device 0001:00:15.0
PCI: Cannot allocate resource region 1 of device 0001:00:15.0
PCI: Cannot allocate resource region 2 of device 0001:00:15.0 io
scheduler noop registered (default)
Serial: 8250/16550 driver $Revision: 1.90 $ 2 ports, IRQ sharing enabled
serial8250.0: ttyS0 at MMIO 0xe0004500 (irq = 26) is a 16550A....?50.0:
ttyS1 at MMIO 0xe0004600 (irq = 26) is a 16 A
] RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize
VFS: Cannot open root device "<NULL>" or unknown-block(0,0) 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(0,0) Rebooting in 180 seconds..
And here is the device tree:
/memreserve/ a 0;
{
model = "MPC8541CDS";
compatible = [4d 50 43 38 35 34 31 43 44 53 00 4d 50 43 38 35 78 78
43 44 53 00];
#address-cells = <1>;
#size-cells = <1>;
cpus {
#address-cells = <1>;
#size-cells = <0>;
PowerPC,8541 at 0 {
device_type = "cpu";
reg = <0>;
d-cache-line-size = <20>;
i-cache-line-size = <20>;
d-cache-size = <8000>;
i-cache-size = <8000>;
timebase-frequency = <1f78a40>;
bus-frequency = <fbc5200>;
clock-frequency = <1f78a400>;
32-bit;
};
};
memory {
device_type = "memory";
reg = <8>;
};
soc8541 at e0000000 {
#address-cells = <1>;
#size-cells = <1>;
#interrupt-cells = <2>;
device_type = "soc";
ranges = [00 00 00 00 e0 00 00 00 00 10 00 00];
reg = <8>;
bus-frequency = <0>;
memory-controller at 2000 {
compatible = "fsl,8541-memory-controller";
reg = <8>;
interrupt-parent = <1>;
interrupts = <8>;
};
l2-cache-controller at 20000 {
compatible = "fsl,8541-l2-cache-controller";
reg = <8>;
cache-line-size = <20>;
cache-size = <40000>;
interrupt-parent = <1>;
interrupts = <8>;
};
i2c at 3000 {
device_type = "i2c";
compatible = "fsl-i2c";
reg = <8>;
interrupts = <8>;
interrupt-parent = <1>;
dfsrr;
};
mdio at 24520 {
#address-cells = <1>;
#size-cells = <0>;
device_type = "mdio";
compatible = "gianfar";
reg = <8>;
ethernet-phy at 0 {
interrupt-parent = <1>;
interrupts = <8>;
reg = <0>;
device_type = "ethernet-phy";
linux,phandle = <2>;
};
ethernet-phy at 1 {
interrupt-parent = <1>;
interrupts = <8>;
reg = <1>;
device_type = "ethernet-phy";
};
};
ethernet at 24000 {
#address-cells = <1>;
#size-cells = <0>;
device_type = "network";
model = "TSEC";
compatible = "gianfar";
reg = <8>;
local-mac-address = [00 18 18 8f a6 ac];
interrupts = [00 00 00 0d 00 00 00 02 00 00 00 0e 00 00 00
02 00 00 00 12 00 00 00 02];
interrupt-parent = <1>;
phy-handle = <2>;
};
serial at 4500 {
device_type = "serial";
compatible = "ns16550";
reg = <8>;
clock-frequency = <fbc5200>;
interrupts = <8>;
interrupt-parent = <1>;
};
serial at 4600 {
device_type = "serial";
compatible = "ns16550";
reg = <8>;
clock-frequency = <fbc5200>;
interrupts = <8>;
interrupt-parent = <1>;
};
pci at 8000 {
interrupt-map-mask = [00 01 f8 00 00 00 00 00 00 00 00 00 00
00 00 07];
interrupt-map = [00 00 80 00 00 00 00 00 00 00 00 00 00 00
00 04 00 00 00 01 00 00 00 30 00 00 00 01 00 0;
interrupt-parent = <1>;
interrupts = <8>;
bus-range = <8>;
ranges = [02 00 00 00 00 00 00 00 80 00 00 00 80 00 00 00 00
00 00 00 20 00 00 00 01 00 00 00 00 00 00 00;
clock-frequency = <3f940aa>;
#interrupt-cells = <1>;
#size-cells = <2>;
#address-cells = <3>;
reg = <8>;
compatible = "85xx";
device_type = "pci";
linux,phandle = <3>;
i8259 at 19000 {
clock-frequency = <0>;
interrupt-controller;
device_type = "interrupt-controller";
reg = [00 01 90 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 01];
#address-cells = <0>;
#interrupt-cells = <2>;
built-in;
compatible = "chrp,iic";
big-endian;
interrupts = <1>;
interrupt-parent = <3>;
};
};
pci at 9000 {
interrupt-map-mask = [00 00 f8 00 00 00 00 00 00 00 00 00 00
00 00 07];
interrupt-map = [00 00 a8 00 00 00 00 00 00 00 00 00 00 00
00 01 00 00 00 01 00 00 00 3b 00 00 00 01 00 0;
interrupt-parent = <1>;
interrupts = <8>;
bus-range = <8>;
ranges = [02 00 00 00 00 00 00 00 a0 00 00 00 a0 00 00 00 00
00 00 00 20 00 00 00 01 00 00 00 00 00 00 00;
clock-frequency = <3f940aa>;
#interrupt-cells = <1>;
#size-cells = <2>;
#address-cells = <3>;
reg = <8>;
compatible = "85xx";
device_type = "pci";
};
pic at 40000 {
clock-frequency = <0>;
interrupt-controller;
#address-cells = <0>;
#interrupt-cells = <2>;
reg = <8>;
built-in;
compatible = "chrp,open-pic";
device_type = "open-pic";
big-endian;
linux,phandle = <1>;
};
};
chosen {
linux,stdout-path = "/soc8541 at e0000000/serial at 4600";
};
chosen {
name = "chosen";
bootargs = "root=/dev/ram rw console=ttyS1,115200";
linux,platform = <600>;
linux,initrd-start = <1ef33000>;
linux,initrd-end = <1fe190aa>;
linux,stdout-path = "/soc8541 at e0000000/serial at 4600";
};
};
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