reboot?......Ummm

I'm only test "suspend2(hibernation)" module.
No test sleep mode.

In case of sleep mode, you must check device drivers's initialization.

Generally, the reason of resume fail is device initialize fault.

^^

I'm use linux kernel 2.6.13 for suspend test.

Do you? 2.4.20? 2.4.18 or another?

ar ge sim ni da! karm sa ham ni da!!

I'm using linux kernel 2.6.10,("ben dock")

It seems system reset after I trigger the wake up source. I added
some debug info in the bootload(I'm using uboot). it goes like this:

if system is waking up from sleep mode, let the red led flash, other wise
flash the green led.
But every time, the green led flash, indicating that it's reset.

Indicate it's booting by system reset

S3C2410/2440 linux sleep mode implement in kernel by ben dooks.
Implemented ev-board is Simtec's BAST board.

Suspend code frequently change.
2.6.13 kernel's sleep mode code is "Suspend to RAM" concept.

You use /sys/power mechanism?, or your own mechanism? or swsusp?

nei! Suspend to ram.
I'm using APM interface.
I'm testing this on several projects. (we're developping VOIP,DVBH,TDMB player using s3c2440)

The sleep resume can't work on the DVBH board but the other two works.
The suspend/resume debug is really difficult job.

^^

I'm using only suspend2 code(suspend to disk-mtdblock).
Um...

As I see arch/arm/kernel/apm.c, apm mechanism use different code.
Result of my test /sys/power/state, suspend & resume work well.

- log

root@godori:~# cat /sys/power/state
standby mem disk
root@godori:~# echo mem > /sys/power/state
Stopping tasks: =====|
selected clock c02c9558 (pclk) quot 35, calc 115640
s3c2440-i2c s3c2440-i2c: resume: level 2
s3c2440-i2c s3c2440-i2c: slave address 0x10
s3c2440-i2c s3c2440-i2c: pdata c02cfe5c, freq 100000 0..400000
s3c2440-i2c s3c2440-i2c: bus frequency set to 378 KHz
s3c2440-i2c s3c2440-i2c: S3C2410_IICCON=0xaa
s3c2440-i2c s3c2440-i2c: S3C2440_IICLC=00000005
aesop2440_audio_resume
s3c2410-rtc s3c2410-rtc: rtc disabled, re-enabling
Restarting tasks... done


This test is using arch/arm/mach-s3c2410/pm.c & kernel/power/*.c
APM is using another code arch/arm/kernel/apm.c

I confuse difference of two mechanism....^^, need more study.

The suspend/resume debug is really difficult job, too...
Chinese ancient word... 五里霧中, right?...^^

Oops...

static void apm_suspend(void)
{
struct apm_user *as;
int err = pm_suspend(PM_SUSPEND_MEM);

/*
* Anyone on the APM queues will think we're still suspended.
* Send a message so everyone knows we're now awake again.
*/
queue_event(APM_NORMAL_RESUME, NULL);

/*
* Finally, wake up anyone who is sleeping on the suspend.
*/
down_read(&user_list_lock);
list_for_each_entry(as, &apm_user_list, list) {
as->suspend_result = err;
as->suspend_state = SUSPEND_DONE;
}
up_read(&user_list_lock);

wake_up(&apm_suspend_waitqueue);
}


apm_suspend() is using pm_suspend() code, too....

I'll test APM.....,

umm...

五里霧中,cool~~,and also 云里雾里. 你学过中文?
han go ma'er kongbu ha go yi sip ni da.
You're using suspend to mtdblock, that's new feature for your kernel?
For I can't find the /sys/power fold here on my board.
I think the problem I'm facing now is very "hardware-dependant". I tested
244x's suspend/resume function outside the kernel--using a firmware test code.
it works...I'm compare the raw register setting. Hope to get some result and share u.

I cannot read/write chinese.

But, I can read 漢字(original? ancient? chinese language...^^)

You're using suspend to mtdblock, that's new feature for your kernel?
==> yes, I'm using nand flash to mtdblock.

I'm testing Suspend2 power save mode using nand flash to swap partition.
This is Suspend to Disk.

If you want suspend2 to disk source code, I upload the code & howto.

Oh, you're pc can recognize the tranditional Chinese characters.

I'm studying Korean. I've been to Suwon and Seoul several times. You're country is very clean and beautiful!!

That would be very helpful if you upload the code & howto of suspend2 disk.

I did some test and found something:
the physical address of the resume routine is saved in the GSTATUS3 but the content inside that register seems lost when the system trying to wake up.
Strange, what'll cause the data lost? The content in the GSTATUS3 and GSTATUS4 only clear by power on reset and Watchdog reset.

I upload code till tomorrow.

Today, I'll test aesop2440-3rd edition ev-board.
Besides, suspend2 test kernel is on my backup DVD. I'll find the code.

neinei, Ko ma sim nida!

meol yo.....^^(== you're welcome)

My sleep/suspend to ram is working now.
I paly a trick. duiring the wake up processdure, I don't use the wake up address stored in GSTATUS3, but assigned the pc myself--for I know the physical address.

But still I'm confused why the content in GSTATUS3 lost

^^, Oh...Nice!

I upload suspen2 patch kernel for aesop2440 2.6.13.

see

target=_blank>http://www.aesop-embedded.org/download.html

's
Linux kernel 2.6.13-suspend2-patch by Godori(고도리) - howto
part.

Great! Thanks.
Just now I downloaded your root fs image,
question is which ui are you using?

==================================================
AESOP Linux

/) /)
(='.'=) <- godori

login[54]: root login on `tts/0'

root@godori:~#
root@godori:~#
root@godori:~# ls
15fps_w309.avi g2player ghello.c logo01.raw
bombs gcomp glogo
controls ghello label
root@godori:~# ./ghello

(ghello:58): Gdk-WARNING **: locale not supported by Xlib

(ghello:58): Gdk-WARNING **: cannot set locale modifiers
(ghello:58): Gtk-WARNING **: cannot open display:
root@godori:~#
root@godori:~#
root@godori:~# ls
15fps_w309.avi g2player ghello.c logo01.raw
bombs gcomp glogo
controls ghello label

root@godori:~# ./g2player 15fps_w309.avi
Could not initialize SDL - No available video device
root@godori:~#
=============================================

X windows can't work

I recommend g2player do not run....^^

Your LCD size?
Aesop2440 use 480x272 samsung 4" LCD. And touch?

If you see /etc/profile file, set touch device & locale.....etc.

Then, If you run X windows system, just hit "startx"
You can find mplayer in /usr/bin/mplayer. This binary is for X windows system.

Enjoy it....^^

I'm using Samsung's smdk board, with the lcd size 240*320 + touch screen.
Still I met some problem in start the kernel. Seems that I need
"a free VT". what's that?

===========================================
root@godori:/# startx
Fatal server error:
LinuxInit: Cannot open /dev/tty0 (No such file or directory)
root@godori:/# ln -s /dev/tty /dev/tty0
root@godori:/# startx
Fatal server error:
xf86OpenConsole: Cannot find a free VT

Couldn't open display
root@godori:/#
(process:82): Gdk-WARNING **: locale not supported by Xlib

(process:82): Gdk-WARNING **: cannot set locale modifiers
bt::Display: failed to open display ''

(fbpanel:82): Gtk-WARNING **: cannot open display:

Um....

It's a complex problem.

X window system needs keyboard(exactly virtual terminal).

Aesop2440 has button keyboard, I made keybutton to keyboard.
and check input driver to keyboard in kernel menuconfig.

like this

lqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqk x
x x --- Generic input layer (needed for keyboard, mouse, ...) x x
x x --- Userland interfaces x x
x x --- Mouse interface x x
x x [*] Provide legacy /dev/psaux device x x
x x (480) Horizontal screen resolution x x
x x (272) Vertical screen resolution x x
x x < > Joystick interface x x
x x < > Touchscreen interface x x
x x <*> Event interface x x
x x < > Event debugging x x
x x --- Input Device Drivers x x
x x [*] Keyboards ---> x x
x x [ ] Mouse ---> x x
x x [ ] Joysticks ---> x x
x x [*] Touchscreens ---> x x
x x [ ] Miscellaneous devices ---> x x
x x Hardware I/O ports ---> x x
x mqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqj x

lqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqk x
x x --- Keyboards x x
x x <*> AT keyboard x x
x x < > Sun Type 4 and Type 5 keyboard x x
x x < > DECstation/VAXstation LK201/LK401 keyboard x x
x x < > XT keyboard x x
x x < > Newton keyboard x x
x x < > s3c2410 buttons x x
x x <*> AESOP2440 buttons x x
x x x x



Can you check input device like this?
And hit startx again.

yes ,maybe I've to write an keyboard driver.
anyway I think xwindows is too big for embeded, doesn't it?
we're using trolltech's Qt, the shortcoming is that it's not free.

X windows is bigger than Qt.

but Free & fast. X windows system in aesop rootfs is X kdrive.
Small & very fast in embedded system.

^^, 一長一短

But, I like X windows system. why? very fast & Firefox run....

Nei~~
I'd like to read something about X windows embeded.
and make it running on my board!