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Regards,
Nishanth Menon
________________________________________
From: [email protected] [[email protected]] on behalf of
Sukumar Ghorai [[email protected]]
Sent: Friday, December 21, 2012 10:33
To: [email protected]
Subject: [pandaboard] device tree does not work
Hi,
Device Tree in Panda board does not boot.
Device Tree with legacy u-boot : Appending dtb blob to kernel
menuconfig → boot options
select [*] Use appended device tree blob to zImage (EXPERIMENTAL)
Used with legacy u-boot
U-Boot 2011.09 (Nov 19 2011 - 04:44:45)
CPU : OMAP4430
Board: OMAP4 Panda
I2C: ready
DRAM: 1 GiB
WARNING: Caches not enabled
MMC: OMAP SD/MMC: 0
Using default environment
In: serial
Out: serial
Err: serial
Net: No ethernet found.
Hit any key to stop autoboot: 0
Panda # setenv bootargs 'console=ttyO2,115200n8 root=/dev/mmcblk0p3 rw
rootwait rootfstype=ext4 init=/sbin/init ignore_loglevel debug
printk.time=1 earlyprintk'
Panda # setenv bootcmd 'mmc rescan; fatload mmc 0 80200000
uImage-21dec; fatload mmc 0 80700000 omap4-panda-es.dtb; bootm
80200000 - 80700000'
Panda # boot
reading uImage-21dec
4243816 bytes read
reading omap4-panda-es.dtb
13602 bytes read
## Booting kernel from Legacy Image at 80200000 ...
Image Name: Linux-3.7.0-11091-gf01af9f-dirty
Image Type: ARM Linux Kernel Image (uncompressed)
Data Size: 4243752 Bytes = 4 MiB
Load Address: 80008000
Entry Point: 80008000
Verifying Checksum ... OK
## Flattened Device Tree blob at 80700000
Booting using the fdt blob at 0x80700000
Loading Kernel Image ... OK
OK
reserving fdt memory region: addr=9d000000 size=3000000
Loading Device Tree to bfef1000, end bfef7521 ... OK
Starting kernel ...
Uncompressing Linux... done, booting the kernel.
[ 0.000000] Booting Linux on physical CPU 0x0
[ 0.000000] Linux version 3.7.0-11091-gf01af9f-dirty
(sghorai@bgsxgitb03) (gcc version 4.4.1 (Sourcery G++ Lite 2010q1-202)
) #15 SMP Fri Dec 21 15:50:23 IST 2012
[ 0.000000] CPU: ARMv7 Processor [411fc092] revision 2 (ARMv7), cr=10c53c7d
[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing
instruction cache
[ 0.000000] Machine: Generic OMAP4 (Flattened Device Tree), model:
TI OMAP4 PandaBoard
[ 0.000000] debug: ignoring loglevel setting.
[ 0.000000] bootconsole [earlycon0] enabled
[ 0.000000] Memory policy: ECC disabled, Data cache writealloc
[ 0.000000] On node 0 totalpages: 261888
[ 0.000000] free_area_init_node: node 0, pgdat c080eec0,
node_mem_map c0d6d000
[ 0.000000] Normal zone: 1520 pages used for memmap
[ 0.000000] Normal zone: 0 pages reserved
[ 0.000000] Normal zone: 193040 pages, LIFO batch:31
[ 0.000000] HighMem zone: 528 pages used for memmap
[ 0.000000] HighMem zone: 66800 pages, LIFO batch:15
[ 0.000000] Unable to handle kernel paging request at virtual
address ffef1000
[ 0.000000] pgd = c0004000
[ 0.000000] [ffef1000] *pgd=af7fe821, *pte=00000000, *ppte=00000000
[ 0.000000] Internal error: Oops: 17 [#1] SMP ARM
[ 0.000000] Modules linked in:
[ 0.000000] CPU: 0 Not tainted (3.7.0-11091-gf01af9f-dirty #15)
[ 0.000000] PC is at __unflatten_device_tree+0x1c/0x130
[ 0.000000] LR is at unflatten_device_tree+0x1c/0x34
[ 0.000000] pc : [<c04558ec>] lr : [<c0755910>] psr: a00001d3
[ 0.000000] sp : c0781f50 ip : 00000001 fp : c0788954
[ 0.000000] r10: c0666de0 r9 : c157c080 r8 : 80000200
[ 0.000000] r7 : c0730f64 r6 : c078d3d0 r5 : ffef1000 r4 : c0730f64
[ 0.000000] r3 : d00dfeed r2 : c0730f64 r1 : c0d666e8 r0 : ffef1000
[ 0.000000] Flags: NzCv IRQs off FIQs off Mode SVC_32 ISA ARM
Segment kernel
[ 0.000000] Control: 10c53c7d Table: 8000404a DAC: 00000017
[ 0.000000] Process swapper (pid: 0, stack limit = 0xc0780240)
[ 0.000000] Stack: (0xc0781f50 to 0xc0782000)
[ 0.000000] 1f40: 80000200
c157c080 c0d666e8 00000000
[ 0.000000] 1f60: c0730f64 c0d50c68 c078d3d0 c07e2c60 80000200
c0755910 c075d548 c072fc94
[ 0.000000] 1f80: 00000000 10c53c7d bfffffff c0781fdc 411fc092
00000000 00000000 c052f9b0
[ 0.000000] 1fa0: c06655ac ffffffff 00000001 00000000 bfffffff
8000406a 411fc092 00000000
[ 0.000000] 1fc0: 00000000 c072c4ec 00000000 00000000 00000000
00000000 00000000 c075f2b0
[ 0.000000] 1fe0: 00000000 10c53c7d c078898c c075f2ac c078d1c4
80008078 00000000 00000000
[ 0.000000] [<c04558ec>] (__unflatten_device_tree+0x1c/0x130) from
[<c0755910>] (unflatten_device_tree+0x1c/0x34)
[ 0.000000] [<c0755910>] (unflatten_device_tree+0x1c/0x34) from
[<c072fc94>] (setup_arch+0x5d4/0x7ac)
[ 0.000000] [<c072fc94>] (setup_arch+0x5d4/0x7ac) from [<c072c4ec>]
(start_kernel+0x88/0x2fc)
[ 0.000000] [<c072c4ec>] (start_kernel+0x88/0x2fc) from
[<80008078>] (0x80008078)
[ 0.000000] Code: e1a07002 0a000035 e59f30fc e58d1008 (e5951000)
[ 0.000000] ---[ end trace 1b75b31a2719ed1c ]---
[ 0.000000] Kernel panic - not syncing: Attempted to kill the idle task!
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