Van: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Teun Grinwis
Verzonden: dinsdag 15 mei 2007 8:53
Aan: uClinux development list
Onderwerp: RE: [uClinux-dev] RE: jffs2 on MCF5208 custom board
Hi Greg,
It is no HW fault, since primary I did extended tests on all memory r/w.
Also dBUG boot sw is running correctly.
After some further investigation, the real problem is a NULL ptr function
call, see below:
- in cfi_cmdset_0002.c, do_erase_oneblock
put_chip( map, chip, adr ); is called.
- in cfi_cmdset_0002.c, put_chip
wake_up( &chip->wq ); is called
- in kernel/sched.c, __wake_up
__wake_up_common( q, mode, nr_exclusive, 0, key ) is called
- in kernel/sched.c, __wake_up_common, here ERROR, func == NULL
static void __wake_up_common(wait_queue_head_t *q, unsigned int mode,
int nr_exclusive, int sync, void *key)
{
struct list_head *tmp, *next;
list_for_each_safe(tmp, next, &q->task_list) {
wait_queue_t *curr;;
unsigned flags;
curr = list_entry(tmp, wait_queue_t, task_list);
flags = curr->flags;
if (curr->func(curr, mode, sync, key) &&
^^^^^^^^^^ ERROR, curr->func = NULL
(flags & WQ_FLAG_EXCLUSIVE) &&
!--nr_exclusive)
break;
}
}
------------------------------------------------
Why is reason curr->func = NULL? I do not have knowledge about mtd.
------------------------------------------------
Tx for info.
Regards,
Teun
-----Oorspronkelijk bericht-----
Van: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Greg Ungerer
Verzonden: dinsdag 15 mei 2007 3:31
Aan: uClinux development list
Onderwerp: Re: [uClinux-dev] RE: jffs2 on MCF5208 custom board
Hi Teun,
Teun Grinwis wrote:
Late reply, went away some weeks,
I currently do not run apps XIP.
Our custom board concerning flash, is equal design as on Intec
5208EVB with
the diff that the flash is S29GL064AR4 iso AM29BDD160G,
Could this be a hardware fault?
Has the hardware been validated?
Regards
Greg
My MTD partitions are as follows (btw i did not change flash
name string):
------------------------
Am29BDD160G 2.5v flash device (2MB): Found 1 x16 devices at 0x0
in 16-bit
bank
Amd/Fujitsu Extended Query Table at 0x0040
cfi_send_gen_cmd():,40 cmd=98 addr=00000055 base=00000000 build
addr=000000aa cm
d_val=00000008
cfi_send_gen_cmd():,41 cmd=f0 addr=00000000 base=00000000 build
addr=00000000 cm
d_val=00000040
cfi_send_gen_cmd():,42 cmd=ff addr=00000000 base=00000000 build
addr=00000000 cm
d_val=00000040
Using buffer write method
number of CFI chips: 1
cfi_cmdset_0002: Disabling erase-suspend-program due to code
brokenness.
Creating 3 MTD partitions on "Am29BDD160G 2.5v flash device (2MB)":
0x00000000-0x00040000 : "dBUG (256K)"
mtd: Giving out device 2 to dBUG (256K)
0x00040000-0x000c0000 : "User FS (512K)"
mtd: Giving out device 3 to User FS (512K)
0x000c0000-0x00200000 : "Kernel + RootFS (1280K)"
mtd: Giving out device 4 to Kernel + RootFS (1280K)
m520xevb ram probe(0x40150020,de000,4): de000 at 40150020
m520xevb ram probe(0x40150020,de000,4): de000 at 40150020
do_map_probe(): name=map_ram <5>Creating 1 MTD partitions on "RAM":
0x00000000-0x000de000 : "Romfs"
mtd: Giving out device 5 to Romfs
init_m520x: Root filesystem maj:31 mtdblock:5
----------------------------
I mount jffs2 on "User FS", addresses 0x40000 - 0xc0000
I can run my image successful on the EVB see attached file
Log_uclinux_evb.
I started all from a clean flash, erase flash, program dBUG, dn
image.bin,
exec image.
When starting on EVB, jffs2 is initializing "User FS" by MTD
do_erase_oneblock,
MTD do_write_oneword(s) 0x..0 - 0x..a for all sectors in "User
FS", startup
successful.
When starting on custom board *** ILLEGAL INSTRUCTION ***
occurs after the
first
MTD do_erase_oneblock(), see attached file
Log_uclinux_ads4010, startup
unsuccessful.
It seems that the error has something todo with (erase) timing
?? since in
call trace:
...
BUG: pdflush/9, lock held at task exit time!
[403b6446] {alloc_super}
.. held by: pdflush: 9 [402b2330, 115]
... acquired at:
After further investigation it seems that in
cfi_cmdset_0002.c:do_erase_oneblock,
the code execution does not reach: spin_unlock(chip->mutex).
Any suggestions, are welcome.
Thanks in advance,
Teun Grinwis
-----Oorspronkelijk bericht-----
Van: Teun Grinwis [mailto:[EMAIL PROTECTED]
Verzonden: donderdag 10 mei 2007 11:15
Aan: Teun
Onderwerp: jffs2 on MCF5208 custom board
Hi Teun,
Teun Grinwis wrote:
Hello all,
Can someone give hint where to start debug searching ??
I use distribution 20060511 2.16.16-uc0 on custom MCF 5208 board.
With flash, S29GL064AR4. Debug for mtd, jffs2 set to noisy.
When I mount a mtdblock on jffs2 I got the following error:
See below.
Command: mount -t jffs2 /dev/mtdblock3 /mnt
Command:
Command:
Execution Finished, Exiting
mtdblock: read on "Romfs" at 0x3d400, size 0x200
......
Your root filesystem isn't also on the same flash
as the JFFS2 you are trying to mount is it?
If you where running apps XIP then this would be a problem.
Regards
Greg
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------------------------------------------------------------------------
Greg Ungerer -- Chief Software Dude EMAIL: [EMAIL PROTECTED]
Secure Computing Corporation PHONE: +61 7 3435 2888
825 Stanley St, FAX: +61 7 3891 3630
Woolloongabba, QLD, 4102, Australia WEB: http://www.SnapGear.com
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