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C6Accel Application on EZSDK 5.04.00.11 Kernel and File System

Hongdong Qin
Prodigy 60 points
Other Parts Discussed in Thread: TVP7002

Hey guys.

A few months ago I was developing on EZSDK 5.01.01.80 with C6Accel and the app ran on DM816x EVM. Recently I need video capture feature which was not implemented on that version. When I migrated to EZSDK 5.04.00.11 and suddenly found C6Accel obsolete. How do I make my old app run on the new kernel and file system?

I once copied the old c6accel_app and ran it but got something like this:

root@dm816x-evm:~/dm816x-evm/c6accel_applications# ./c6accel_app
****************************************************************Unable to handle kernel NULL pointer dereference at
virtual address 00000010
**************
pgd = cdd50000
Sample applicati[00000010] *pgd=8e782031on for testing k, *pte=00000000ernels in C6Acce, *ppte=00000000l started.
****
****************Internal error: Oops: 17 [#1]
last sysfs file: /sys/module/pvrsrvkm/initstate
Modules linked in: cmemk bufferclass_ti omaplfb pvrsrvkm ipv6 ti81xxhdmi ti81xxvin tvp7002 ti81xxvo ti81xxfb vpss sy
slink
CPU: 0 Not tainted (2.6.37 #1)
PC is at DLOAD_query_symbol+0x1c/0x90 [syslink]
LR is at ElfLoader_getSymbolAddress+0xa8/0x104 [syslink]
pc : [<bf013844>] lr : [<bf010588>] psr: a0000013
sp : cdd59d48 ip : cdd59d80 fp : cdd59d7c
r10: bf0957e9 r9 : 00000000 r8 : cdd59e70
r7 : 00000000 r6 : bf0957e9 r5 : db5d4000 r4 : db5da000
r3 : cdd59e70 r2 : bf0957e9 r1 : 00000000 r0 : 00000000
Flags: NzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user
Control: 10c5387d Table: 8dd50019 DAC: 00000015
Process c6accel_app (pid: 1440, stack limit = 0xcdd582e8)
Stack: (0xcdd59d48 to 0xcdd5a000)
9d40: cdd59ddc cdd59e70 e300152d db5da000 db5d4000 bf0957e9
9d60: 00000000 cdd59e70 cdd58000 00000000 cdd59db4 cdd59d80 bf010588 bf013834
9d80: 00000000 bf0957e9 cdd59e70 cdd59d98 c01b5bd8 db5d4000 cdd59e70 bf0957e9
9da0: 00000000 00000000 cdd59de4 cdd59db8 bf001c0c bf0104ec 00000000 bf0957e9
9dc0: cdd59e70 bf029a08 d72bc000 db5e6000 bf0957e9 cdd59e70 cdd59e1c cdd59de8
9de0: bf0053d4 bf001b48 00000000 bf0957e9 cdd59e70 c0084c8c 00000000 bf0fb684
9e00: bf0fb684 bf0fb8c0 00000000 00000000 cdd59ea4 cdd59e20 bf018fb0 bf005230
9e20: 00000000 cdd59e30 c01f6000 c01f5fa4 00000000 d3518d08 cdd59e74 cdd59e48
9e40: c01f74a4 c01f5ff4 c03ba940 00000002 0000000a d23b8b88 00000001 a0000013
9e60: d23b8800 d23b90a7 cdd59e84 cdd59e78 c01f5fe4 c01febf8 cdd59e9c babe0002
9e80: 00000000 00000000 bf0fb8c0 40f10c6c cdd58000 00000000 cdd59ecc cdd59ea8
9ea0: bf04d574 bf018f34 babe0002 00000000 40f10c6c c014f497 bf0fb8c0 00000005
9ec0: cdd59ef4 cdd59ed0 bf086540 bf04d4b8 c014f497 40f10c6c d2c14e88 00000000
9ee0: d2016280 00000005 cdd59f04 cdd59ef8 c00d305c bf0864e4 cdd59f74 cdd59f08
9f00: c00d376c c00d3040 40303000 d23be800 c01dfe20 d23b76c0 4f9dc5ca 09896800
9f20: 000dd128 d23be800 40303000 cdd59f70 000000a7 40303000 cdd58000 00000000
9f40: 00000001 000000a7 00000000 00000000 40f10c6c c014f497 00000005 d2016280
9f60: cdd58000 00000000 cdd59fa4 cdd59f78 c00d3804 c00d3278 e1a02001 00000001
9f80: 000dd128 40f10c6c c014f497 000dc204 00000036 c0045fa8 00000000 cdd59fa8
9fa0: c0045e00 c00d37b8 40f10c6c c014f497 00000005 c014f497 40f10c6c 00000001
9fc0: 40f10c6c c014f497 000dc204 00000036 00000100 0000ff9f 0000033c 00000000
9fe0: 000dc248 40f10c40 0006a1f4 40294aec 20000010 00000005 000149b8 000153a5
Backtrace:
[<bf013828>] (DLOAD_query_symbol+0x0/0x90 [syslink]) from [<bf010588>] (ElfLoader_getSymbolAddress+0xa8/0x104 [sysli
nk])
[<bf0104e0>] (ElfLoader_getSymbolAddress+0x0/0x104 [syslink]) from [<bf001c0c>] (Loader_getSymbolAddress+0xd0/0x160
[syslink])
r8:00000000 r7:00000000 r6:bf0957e9 r5:cdd59e70 r4:db5d4000
[<bf001b3c>] (Loader_getSymbolAddress+0x0/0x160 [syslink]) from [<bf0053d4>] (ProcMgr_getSymbolAddress+0x1b0/0x280 [
syslink])
r7:cdd59e70 r6:bf0957e9 r5:db5e6000 r4:d72bc000
[<bf005224>] (ProcMgr_getSymbolAddress+0x0/0x280 [syslink]) from [<bf018fb0>] (Platform_stopCallback+0x88/0x490 [sys
link])
[<bf018f28>] (Platform_stopCallback+0x0/0x490 [syslink]) from [<bf04d574>] (Ipc_control+0xc8/0x14c [syslink])
[<bf04d4ac>] (Ipc_control+0x0/0x14c [syslink]) from [<bf086540>] (IpcDrv_drvioctl+0x68/0x298 [syslink])
r7:00000005 r6:bf0fb8c0 r5:c014f497 r4:40f10c6c
[<bf0864d8>] (IpcDrv_drvioctl+0x0/0x298 [syslink]) from [<c00d305c>] (vfs_ioctl+0x28/0x44)
r6:00000005 r5:d2016280 r4:00000000
[<c00d3034>] (vfs_ioctl+0x0/0x44) from [<c00d376c>] (do_vfs_ioctl+0x500/0x540)
[<c00d326c>] (do_vfs_ioctl+0x0/0x540) from [<c00d3804>] (sys_ioctl+0x58/0x7c)
[<c00d37ac>] (sys_ioctl+0x0/0x7c) from [<c0045e00>] (ret_fast_syscall+0x0/0x30)
r8:c0045fa8 r7:00000036 r6:000dc204 r5:c014f497 r4:40f10c6c
Code: e24dd00c e50b3030 e1a09001 e1a0a002 (e5906010)
****************---[ end trace 8e61016b822e760d ]---
******************************************

  • 0
    TI__Intellectual 2785 points

    Hi,

        The C6accel is diccontinued from EZSDK 05.03 release onwards.

        Latest release 05.05.00.04 available. You can download this from http://software-dl.ti.com/dsps/dsps_public_sw/ezsdk/latest/index_FDS.html

       There are couple of things you need to ensure for running C6accel on latest EZSDK,

       - EZSDK follows the memory map defined in http://processors.wiki.ti.com/index.php/EZSDK_Memory_Map, Ensure to change the C6accel as per this.

       - Do a incremental integration.

         - Initially include only C6accel app, Not loading media controller (Video-M3, VPSS-M3) application, for which you need to ensure the resources (Shared region, etc...) are aligned.

    Thanks & Regards,

    Velan

  • 0 in reply to Velan
    TI__Intellectual 2785 points

    Hi

       Also, Please refer to link http://processors.wiki.ti.com/index.php/EZSDK_Feature_List which details about the features supported in each of the releases.

    Thanks & Regards,
    Velan

  • 0 in reply to Velan
    Prodigy 60 points

    Hey Velan,

    I checked out the memory mapping document and tried quite a number of combinations. But actually when I tried to run c6accel_app example it crashes at Engine_open() function within C6accel_create(). It seems to be somewhat related to codec_engine. Does codec_engine need to be modified also?

    Regards,
    Hongdong 

  • 0 in reply to Hongdong Qin
    TI__Intellectual 2785 points

    Hongdong,

             This could be due to two reason.

             - Other cores are loaded (Ensure that Video-M3 and VPSS-M3 are not loaded)

             - DSP codec server still not in the expected configuration, First run the Codec engine examples.

             you can also enable CE traces by running export CE_DEBUG=[1,2,3]

    Thanks & Regards,

    Velan