I'm able to build OE (Angstrom 2008.1) for the 9260 and using the cross
tool chain from that, I've built a 2.6.27 kernel (kernel.org + patches from
linux4sam) for the 9G20. My presumption is that the OE rootfs should work on the
9G20, but perhaps I'm missing something.
The kernel boots fine, as expected, but startup fails as follows:
VFS: Mounted root (jffs2 filesystem).
Freeing init memory: 124K
INIT: version 2.86 booting
Starting udevKernel panic - not syncing: Attempted to kill init!
(Complete boot log is below)
My understanding is that the rootfs has been mounted successfully and that udev
is actually resident in the rootfs. I suspect that the udev configuration
(again, in the rootfs) is broken.
2 questions:
1. Am I correct in believing the OE/9260 rootfs should work on a 9G20?
2. If I want to modify the init scripts (e.g., set /etc/udev/udev.conf to debug
mode), how do I do it? I can't seem to find a simple way to edit the rootfs
prior to the mkfs.jffs2 step; it's rewritten when I rerun bitbake.
Furthermore, I can't determine how the deployed /etc/udev/udev.conf file is
created. I tried to create a 'tweaked' rootfs (i.e., modified config
files) as follows:
mkfs.jffs2 -r tmp/rootfs/ -o foo.jffs2 --pad --little-endian
--eraseblock=0x20000 -n
where tmp/rootfs is the tree created by OE and foo.jffs2 is the new rootfs
image. The kernel is unable to read the resulting jffs2 image, however.
Here's the full boot log:
---
U-Boot 1.3.4 (Dec 12 2008 - 12:18:59)
DRAM: 64 MB
NAND: 256 MiB
DataFlash:AT45DB642
Nb pages: 8192
Page Size: 1056
Size= 8650752 bytes
Logical address: 0xD0000000
Area 0: D0000000 to D00041FF (RO) Bootstrap
Area 1: D0004200 to D00083FF Environment
Area 2: D0008400 to D0041FFF (RO) U-Boot
Area 3: D0042000 to D0251FFF Kernel
Area 4: D0252000 to D083FFFF FS
In: serial
Out: serial
Err: serial
Net: macb0
macb0: Starting autonegotiation...
macb0: Autonegotiation timed out (status=0x7849)
macb0: link down (status: 0x7849)
Hit any key to stop autoboot: 0
## Booting kernel from Legacy Image at 22000000 ...
Image Name: linux-2.6
Image Type: ARM Linux Kernel Image (uncompressed)
Data Size: 1531744 Bytes = 1.5 MB
Load Address: 20008000
Entry Point: 20008000
Verifying Checksum ... OK
Loading Kernel Image ... OK
OK
Starting kernel ...
Uncompressing
Linux.............................................................
...................................... done, booting the kernel.
Linux version 2.6.27 (nferre@bendor) (gcc version 4.2.0 20070413 (prerelease)
(C
odeSourcery Sourcery G++ Lite 2007q1-10)) #1 Fri Dec 12 12:38:40 CET 2008
CPU: ARM926EJ-S [41069265] revision 5 (ARMv5TEJ), cr=00053177
Machine: Atmel AT91SAM9G20-EK
Memory policy: ECC disabled, Data cache writeback
Clocks: CPU 396 MHz, master 132 MHz, main 18.432 MHz
CPU0: D VIVT write-back cache
CPU0: I cache: 32768 bytes, associativity 4, 32 byte lines, 256 sets
CPU0: D cache: 32768 bytes, associativity 4, 32 byte lines, 256 sets
Built 1 zonelists in Zone order, mobility grouping on. Total pages: 16256
Kernel command line: console=ttyS0,115200 root=/dev/mtdblock1
mtdparts=at91_nand
:-(root) rw rootfstype=jffs2
AT91: 96 gpio irqs in 3 banks
PID hash table entries: 256 (order: 8, 1024 bytes)
Console: colour dummy device 80x30
console [ttyS0] enabled
Dentry cache hash table entries: 8192 (order: 3, 32768 bytes)
Inode-cache hash table entries: 4096 (order: 2, 16384 bytes)
Memory: 64MB = 64MB total
Memory: 61688KB available (2820K code, 233K data, 124K init)
Calibrating delay loop... 197.83 BogoMIPS (lpj=989184)
Mount-cache hash table entries: 512
CPU: Testing write buffer coherency: ok
net_namespace: 288 bytes
NET: Registered protocol family 16
AT91: Power Management
AT91: Starting after user reset
SCSI subsystem initialized
usbcore: registered new interface driver usbfs
usbcore: registered new interface driver hub
usbcore: registered new device driver usb
NET: Registered protocol family 2
IP route cache hash table entries: 1024 (order: 0, 4096 bytes)
TCP established hash table entries: 2048 (order: 2, 16384 bytes)
TCP bind hash table entries: 2048 (order: 1, 8192 bytes)
TCP: Hash tables configured (established 2048 bind 2048)
TCP reno registered
NET: Registered protocol family 1
NetWinder Floating Point Emulator V0.97 (double precision)
JFFS2 version 2.2. (NAND) (SUMMARY) © 2001-2006 Red Hat, Inc.
msgmni has been set to 120
io scheduler noop registered
io scheduler anticipatory registered (default)
atmel_usart.0: ttyS0 at MMIO 0xfefff200 (irq = 1) is a ATMEL_SERIAL
atmel_usart.1: ttyS1 at MMIO 0xfffb0000 (irq = 6) is a ATMEL_SERIAL
atmel_usart.2: ttyS2 at MMIO 0xfffb4000 (irq = 7) is a ATMEL_SERIAL
brd: module loaded
loop: module loaded
ssc ssc.0: Atmel SSC device at 0xc4870000 (irq 14)
macb macb: invalid hw address, using random
MACB_mii_bus: probed
eth0: Atmel MACB at 0xfffc4000 irq 21 (1a:02:55:6a:af:60)
eth0: attached PHY driver [Generic PHY] (mii_bus:phy_addr=ffffffff:00,
irq=-1)
Driver 'sd' needs updating - please use bus_type methods
NAND device: Manufacturer ID: 0xec, Chip ID: 0xda (Samsung NAND 256MiB 3,3V
8-bi
t)
AT91 NAND: 8-bit, Software ECC
Scanning device for bad blocks
Creating 3 MTD partitions on "atmel_nand":
0x00000000-0x00400000 : "Bootstrap"
0x00400000-0x04000000 : "Partition 1"
0x04000000-0x10000000 : "Partition 2"
usbmon: debugfs is not available
at91_ohci at91_ohci: AT91 OHCI
at91_ohci at91_ohci: new USB bus registered, assigned bus number 1
at91_ohci at91_ohci: irq 20, io mem 0x00500000
usb usb1: configuration #1 chosen from 1 choice
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 2 ports detected
Initializing USB Mass Storage driver...
usbcore: registered new interface driver usb-storage
USB Mass Storage support registered.
udc: at91_udc version 3 May 2006
mice: PS/2 mouse device common for all mice
input: gpio-keys as /class/input/input0
rtc-at91sam9 at91_rtt.0: rtc core: registered at91_rtt as rtc0
rtc-at91sam9 at91_rtt.0: rtc0: SET TIME!
i2c /dev entries driver
i2c-gpio i2c-gpio: using pins 55 (SDA) and 56 (SCL)
Registered led device: ds5
Registered led device: ds1
usbcore: registered new interface driver usbhid
usbhid: v2.6:USB HID core driver
Advanced Linux Sound Architecture Driver Version 1.0.17.
ASoC version 0.13.2
WM8731 Audio Codec 0.13<6>asoc: WM8731 <-> atmel-ssc0 mapping ok
ALSA device list:
#0: WM8731 (WM8731)
TCP cubic registered
NET: Registered protocol family 17
RPC: Registered udp transport module.
RPC: Registered tcp transport module.
rtc-at91sam9 at91_rtt.0: hctosys: unable to read the hardware clock
VFS: Mounted root (jffs2 filesystem).
Freeing init memory: 124K
INIT: version 2.86 booting
Starting udevKernel panic - not syncing: Attempted to kill init!
---
Cheers!
Mike
