AT91SAM9263-ek - Kernel panic

[Stutz Sven <stutzsven@web.de>]

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Hello to everybody,

previously I have had some doubts to run a Linux kernel on this evalboard.
Especially to find a BSP for my board ....

In the meantime I have had some problems which I was able to solve by 
myself or reading through different forums.

I still have some problems with Barebox and it's ECC for the NAND-Flash 
and also the asterix * in this nand -a /dev/nand0.* is not working. (It 
is working when I am doing it manually).

But in total I am able to load and start Barebox and then again loading 
and starting the kernel.

First I have seen nothing until I switch on the special function 
earlyprintk=serial,ttyS0,115200n8
After that I saw that I have mounting/partitioning problem, so I changed 
the board specific init.c
in that way that the first three partitions match exactly to the 
definition in the configuration file for the init script of Barebox.

     init.c > devfs_add_partition("nand0", 0x00000, SZ_128K, 
DEVFS_PARTITION_FIXED,"at91bootstrap_raw");
                 dev_add_bb_dev("at91bootstrap_raw", "at91bootstrap");
                 devfs_add_partition("nand0", SZ_128K, SZ_256K, 
DEVFS_PARTITION_FIXED, "self_raw");
                 dev_add_bb_dev("self_raw", "self0");
                 devfs_add_partition("nand0", SZ_256K + SZ_128K, 
SZ_128K, DEVFS_PARTITION_FIXED, "env_raw");
                 dev_add_bb_dev("env_raw", "env0");

     env/config > 
nand_parts="128k(at91bootstrap),256k(barebox),128k(bareboxenv),4M(kernel),80M(rootfs),-(data)"
                 rootfs_mtdblock_nand=4
                 rootfs_mtdblock_type=jffs2

After that I was really happy that the kernel is prompting "VFS: Mounted 
root (jffs2 filesystem)"
But the next kernel panic is near
It cannot find a init script.
I tried init=/bin/init, init=/sbin/init init=linuxrc everything with out 
success each time the same failure occur. I also tried to execute a 
simple command like init=/bin/ls ...

But I see in sysroot-target a softlink linuxrc -> /bin/busybox and also
in the root-folder root/sbin/ init-> ../bin/busybox
Waht is the difference of those directories? (I thought the root folder 
is the result for the target, so everything in there will be contained 
in the root.jffs2)

I have also changed in busybox between soft and hard links ...
How can I solve this problem?
Has anyone a hint for me, pls?

If it  is helpfull here the last kernel outputs >

>    Image Name:   Linux-3.4.0
>    Created:      2012-07-20  11:10:09 UTC
>    OS:           Linux
>    Architecture: ARM
>    Type:         Kernel Image
>    Compression:  uncompressed
>    Data Size:    1720712 Bytes =  1.6 MB
>    Load Address: 20008000
>    Entry Point:  20008000
>
> commandline: console=ttyS0,115200n8 mem=64M 
> earlyprintk=serial,ttyS0,115200n8 init=/sbin/init root=/dev/mtdblock4 
> rw rootfstype=jffs2 noinitrd 
> mtdparts=atmel_nand:128k(at91bootstrap),256k(barebox),128k(bareboxenv),4M(kernel),80M(rootfs),-(data)
> arch_number: 1202
> Uncompressing Linux... done, booting the kernel.
> [    0.000000] Booting Linux on physical CPU 0
> [    0.000000] Linux version 3.4.0 (user@ubuntu) (gcc version 4.5.2 
> (OSELAS.Toolchain-2011.03.1) ) #30 Fri Jul 20 13:09:33 CEST 2012
> [    0.000000] bootconsole [earlycon0] enabled
> [    0.000000] AT91: Detected soc type: at91sam9263
> [    0.000000] AT91: Detected soc subtype: Unknown
> [    0.000000] AT91: sram at 0x300000 of 0x14000 mapped at 0xfef64000
> [    0.000000] AT91: sram at 0x500000 of 0x4000 mapped at 0xfef60000
> [    0.000000] gpiochip_add: registered GPIOs 0 to 31 on device: pioA
> [    0.000000] gpiochip_add: registered GPIOs 32 to 63 on device: pioB
> [    0.000000] gpiochip_add: registered GPIOs 64 to 95 on device: pioC
> [    0.000000] gpiochip_add: registered GPIOs 96 to 127 on device: pioD
> [    0.000000] gpiochip_add: registered GPIOs 128 to 159 on device: pioE
> [    0.000000] Kernel command line: console=ttyS0,115200n8 mem=64M 
> earlyprintk=serial,ttyS0,115200n8 init=/sbin/init root=/dev/mtdblock4 
> rw rootfstype=jffs2 noinitrd 
> mtdparts=atmel_nand:128k(at91bootstrap),256k(barebox),128k(bareboxenv),4M(kernel),80M(rootfs),-(data)
> [    0.000000] PID hash table entries: 256 (order: -2, 1024 bytes)
> [    0.000000] Dentry cache hash table entries: 8192 (order: 3, 32768 
> bytes)
> [    0.000000] Inode-cache hash table entries: 4096 (order: 2, 16384 
> bytes)
> [    0.000000] Memory: 64MB = 64MB total
> [    0.000000] Memory: 61072k/61072k available, 4464k reserved, 0K highmem
> [    0.000000] Virtual kernel memory layout:
> [    0.000000]     vector  : 0xffff0000 - 0xffff1000   (   4 kB)
> [    0.000000]     fixmap  : 0xfff00000 - 0xfffe0000   ( 896 kB)
> [    0.000000]     vmalloc : 0xc4800000 - 0xff000000   ( 936 MB)
> [    0.000000]     lowmem  : 0xc0000000 - 0xc4000000   (  64 MB)
> [    0.000000]     modules : 0xbf000000 - 0xc0000000   (  16 MB)
> [    0.000000]       .text : 0xc0008000 - 0xc0324000   (3184 kB)
> [    0.000000]       .init : 0xc0324000 - 0xc0349000   ( 148 kB)
> [    0.000000]       .data : 0xc034a000 - 0xc03767a8   ( 178 kB)
> [    0.000000]        .bss : 0xc03767cc - 0xc03c313c   ( 307 kB)
> [    0.000000] SLUB: Genslabs=13, HWalign=32, Order=0-3, MinObjects=0, 
> CPUs=1, Nodes=1
> [    0.000000] NR_IRQS:192
> [    0.000000] AT91: 160 gpio irqs in 5 banks
> [    0.000000] sched_clock: 32 bits at 100 Hz, resolution 10000000ns, 
> wraps every 4294967286ms
> [    0.000000] Calibrating delay loop... 99.22 BogoMIPS (lpj=496128)
> [    0.100000] pid_max: default: 32768 minimum: 301
> [    0.100000] Mount-cache hash table entries: 512
> [    0.110000] CPU: Testing write buffer coherency: ok
> [    0.120000] ftrace: allocating 10076 entries in 30 pages
> [    0.230000] Setting up static identity map for 0x2025add0 - 0x2025ae0c
> [    0.240000] devtmpfs: initialized
> [    0.260000] NET: Registered protocol family 16
> [    0.270000] AT91: Power Management
> [    0.270000] AT91: Starting after user reset
> [    0.290000] bio: create slab <bio-0> at 0
> [    0.290000] Switching to clocksource pit
> [    0.330000] NET: Registered protocol family 2
> [    0.340000] IP route cache hash table entries: 1024 (order: 0, 4096 
> bytes)
> [    0.350000] TCP established hash table entries: 2048 (order: 2, 
> 16384 bytes)
> [    0.350000] TCP bind hash table entries: 2048 (order: 1, 8192 bytes)
> [    0.360000] TCP: Hash tables configured (established 2048 bind 2048)
> [    0.370000] TCP: reno registered
> [    0.370000] UDP hash table entries: 256 (order: 0, 4096 bytes)
> [    0.380000] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
> [    0.390000] NET: Registered protocol family 1
> [    0.390000] NetWinder Floating Point Emulator V0.97 (double precision)
> [    0.440000] VFS: Disk quotas dquot_6.5.2
> [    0.440000] jffs2: version 2.2. (NAND) © 2001-2006 Red Hat, Inc.
> [    0.450000] msgmni has been set to 119
> [    0.460000] Block layer SCSI generic (bsg) driver version 0.4 
> loaded (major 254)
> [    0.470000] io scheduler noop registered
> [    0.470000] io scheduler deadline registered
> [    0.480000] io scheduler cfq registered (default)
> [    0.490000] atmel_usart.0: ttyS0 at MMIO 0xffffee00 (irq = 1) is a 
> ATMEL_SERIAL
> [    0.500000] console [ttyS0] enabled, bootconsole disabled
> [    0.500000] console [ttyS0] enabled, bootconsole disabled
> [    0.510000] atmel_usart.1: ttyS1 at MMIO 0xfff8c000 (irq = 7) is a 
> ATMEL_SERIAL
> [    0.540000] atmel_nand: Use On Flash BBT
> [    0.550000] atmel_nand atmel_nand: No DMA support for NAND access.
> [    0.550000] NAND device: Manufacturer ID: 0x2c, Chip ID: 0xda 
> (Micron NAND 256MiB 3,3V 8-bit)
> [    0.560000] Bad block table found at page 131008, version 0x01
> [    0.570000] Bad block table found at page 130944, version 0x01
> [    0.580000] 6 cmdlinepart partitions found on MTD device atmel_nand
> [    0.580000] Creating 6 MTD partitions on "atmel_nand":
> [    0.590000] 0x000000000000-0x000000020000 : "at91bootstrap"
> [    0.600000] 0x000000020000-0x000000060000 : "barebox"
> [    0.610000] 0x000000060000-0x000000080000 : "bareboxenv"
> [    0.620000] 0x000000080000-0x000000480000 : "kernel"
> [    0.630000] 0x000000480000-0x000005480000 : "rootfs"
> [    0.640000] 0x000005480000-0x000010000000 : "data"
> [    0.650000] GPIO NAND driver, © 2004 Simtec Electronics
> [    0.660000] TCP: cubic registered
> [    0.660000] NET: Registered protocol family 17
> [    0.670000] Registering the dns_resolver key type
> [    9.860000] VFS: Mounted root (jffs2 filesystem) on device 31:4.
> [    9.870000] devtmpfs: mounted
> [    9.870000] Freeing init memory: 148K
> [   11.830000] Failed to execute /sbin/init.  Attempting defaults...
> [   11.860000] Kernel panic - not syncing: No init found.  Try passing 
> init= option to kernel. See Linux Documentation/init.txt for guidance.
> [   11.870000] Backtrace:
> [   11.870000] [<c00120f4>] (dump_backtrace+0x0/0x118) from 
> [<c02587e0>] (dump_stack+0x20/0x24)
> [   11.880000]  r6:c033a44c r5:c033a46c r4:c03767e0
> [   11.890000] [<c02587c0>] (dump_stack+0x0/0x24) from [<c0258864>] 
> (panic+0x80/0x1c8)
> [   11.890000] [<c02587e4>] (panic+0x0/0x1c8) from [<c0008850>] 
> (init_post+0xb0/0xd4)
> [   11.900000]  r3:00000001 r2:c04460a8 r1:c04342e0 r0:c02dad7e
> [   11.910000]  r7:c03767e0
> [   11.910000] [<c00087a0>] (init_post+0x0/0xd4) from [<c0324924>] 
> (kernel_init+0x164/0x1a4)
> [   11.920000]  r4:c03767e0
> [   11.920000] [<c03247c0>] (kernel_init+0x0/0x1a4) from [<c00209f8>] 
> (do_exit+0x0/0x334)


best regards
Sven



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