Re: [PATCH v3 0/4] Exynos 5410 Dual cluster support

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Hi,

On 20.11.2013 03:23, Tomasz Figa wrote:
Hi,

On Thursday 07 of November 2013 12:12:45 Vyacheslav Tyrtov wrote:
The series of patches represent support of Exynos 5410 SoC

The Exynos 5410 is the first Samsung SoC based on bigLITTLE architecture
Patches allow all 8 CPU cores (4 x A7 and 4 x A15) to run at the same time

Patches add new platform description, support of clock controller,
dual cluster support and device tree for Exynos 5410

Has been build on v3.12.
Has been tested on Exynos 5410 reference board (exynos_defconfig).
I've applied the patches on top of today's linux-next and tried to boot
my ODROID-XU using exynos5410-smdk5410.dts and exynos_defconfig, but all
I can get is an imprecise external abort, when the kernel tries to jump
to init. Full boot log below. Any ideas?

Best regards,
Tomasz

8><------------

U-Boot 2012.07-g2bcb371 (Nov 19 2013 - 20:17:37) for Exynos5410

CPU: Exynos5410 Rev2.3 [Samsung SOC on SMP Platform Base on ARM CortexA15]
APLL = 900MHz, KPLL = 600MHz
[snip]
Starting kernel ...

Uncompressing Linux... done, booting the kernel.
[    0.000000] Booting Linux on physical CPU 0x0
[    0.000000] Initializing cgroup subsys cpuset
[    0.000000] Initializing cgroup subsys cpu
[    0.000000] Initializing cgroup subsys cpuacct
[    0.000000] Linux version 3.12.0-next-20131119-00004-g27f3f5f-dirty (tom3q@flatron) (gcc version 4.7.2 (Gentoo 4.7.2-r1 p1.6, pie-0.5.5) ) #11 SMP PREEMPT Wed Nov 20 00:08:02 CET 2013
[    0.000000] CPU: ARMv7 Processor [412fc0f3] revision 3 (ARMv7), cr=10c5387d
[    0.000000] CPU: PIPT / VIPT nonaliasing data cache, PIPT instruction cache
[    0.000000] Machine model: Hardkernel ODROID-XU board based on EXYNOS5410
[    0.000000] bootconsole [earlycon0] enabled
[    0.000000] debug: ignoring loglevel setting.
[    0.000000] Memory policy: Data cache writealloc
[    0.000000] CPU EXYNOS5410 (id 0xe5410023)
[    0.000000] On node 0 totalpages: 262144
[snip]
[    5.040000] isa bounce pool size: 16 pages
[    5.045000] mmcblk0: mmc1:e624 SU16G 14.8 GiB
[    5.050000]  mmcblk0: p1
[    5.120000] EXT3-fs (mmcblk0p1): error: couldn't mount because of unsupported optional features (240)
[    5.125000] EXT2-fs (mmcblk0p1): error: couldn't mount because of unsupported optional features (240)
[    5.145000] EXT4-fs (mmcblk0p1): mounted filesystem with ordered data mode. Opts: (null)
[    5.150000] VFS: Mounted root (ext4 filesystem) readonly on device 179:1.
[    5.165000] devtmpfs: mounted
[    5.170000] Freeing unused kernel memory: 228K (c0513000 - c054c000)
[    5.195000] Unhandled fault: imprecise external abort (0x1406) at 0x00000000
[    5.210000] Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000007
[    5.210000]
[    5.210000] CPU: 2 PID: 1 Comm: init Not tainted 3.12.0-next-20131119-00004-g27f3f5f-dirty #11
[    5.210000] [<c0014068>] (unwind_backtrace+0x0/0xf8) from [<c0011438>] (show_stack+0x10/0x14)
[    5.210000] [<c0011438>] (show_stack+0x10/0x14) from [<c03a486c>] (dump_stack+0x7c/0xbc)
[    5.210000] [<c03a486c>] (dump_stack+0x7c/0xbc) from [<c03a1e78>] (panic+0x8c/0x1e4)
[    5.210000] [<c03a1e78>] (panic+0x8c/0x1e4) from [<c001f504>] (do_exit+0x850/0x920)
[    5.210000] [<c001f504>] (do_exit+0x850/0x920) from [<c001f63c>] (do_group_exit+0x3c/0xb0)
[    5.210000] [<c001f63c>] (do_group_exit+0x3c/0xb0) from [<c0029e1c>] (get_signal_to_deliver+0x1d4/0x538)
[    5.210000] [<c0029e1c>] (get_signal_to_deliver+0x1d4/0x538) from [<c0010974>] (do_signal+0x100/0x40c)
[    5.210000] [<c0010974>] (do_signal+0x100/0x40c) from [<c0010fb4>] (do_work_pending+0x68/0xa8)
[    5.210000] [<c0010fb4>] (do_work_pending+0x68/0xa8) from [<c000e620>] (work_pending+0xc/0x20)
[    5.300000] CPU3: stopping
[    5.300000] CPU: 3 PID: 0 Comm: swapper/3 Not tainted 3.12.0-next-20131119-00004-g27f3f5f-dirty #11

Tomasz, there is CCI on/off switcher on smdk5410 board, also there is XOMCCI pin on SoC.
Looks like switcher on board controls the XOMCCI SoC pin.

When I turn switcher OFF, I getting the same problem you got.
Please, check the cci state on Odroid-XU Board, maybe it is turned off.

Best regards,
    Tarek Dakhran

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