Hi,
i downloaded android4.2 img file from this link:
https://docs.google.com/file/d/0B-bAEPML8fwlUFd5OHVOaFJIRmc/edit.
i fallow this link to flash in to sdcard(through phoenix suit).
https://www.olimex.com/wiki/A20-OLinuXino-MICRO
which is working fine.
With same image file ,i fallowed procedure in the link:
http://linux-sunxi.org/Boot_Android_from_SdCard#Extract_file_from_Android_Image.
but getting hanged at boot log.
sometimes it is repeated execution of services. and sometimes kernel panic error.
like
[ 21.985909] init: waitpid returned pid 1509, status = 00000009
[ 21.986200] init: Created socket '/dev/socket/zygote' with mode '660', user '0', group '1000'
[ 22.002237] init: untracked pid 1509 exited
[ 22.789111] ------------[ cut here ]------------
[ 22.794328] kernel BUG at include/linux/mm.h:792!
[ 22.799609] Internal error: Oops - BUG: 0 [#1] PREEMPT SMP ARM
kindly suggest me, what will be wrong in second procedure.
Regards
Punith
Is that image designed for the board you're using?
If no, that's your problem.
John
Hi John,
With my source code also , i am getting same error.
So i feel, it is because sd card partition is issue.
Kindly tell me , how to prepare sdcard to boot android4.2.
Regards
Punith
Start from one that is known to work.
john
Hi John,
In first method , sd card partitions are like this.
Partition Start Sector Num Sectors Type
1 3973120 3769343 b
2 73728 32768 6
3 1 3973120 85 Extd
5 106496 32768 83
6 139264 32768 83
7 172032 1048576 83
8 1220608 1048576 83
9 2269184 32768 83
10 2301952 65536 83
11 2367488 1048576 83
12 3416064 524288 83
13 3940352 32768 83
i tried this method but this dont work.
Regards
Punith
Hi guys,
i got the same experience with my A20 board on Android. It seems that android is very unstable on this board. Sometimes it hangs after certain minutes (screen freeze with little sprites on it, no reaction to any input) or it boots up with a freeze.
I don`t know how to fix this. I also got no Usb devices connected that may incompatible with android.
I flashed this image A20_SD_android_422_Phoenix_TS_USB_UART_I2C_WIFI_LAN_HDMI_LCD_800x480_release_1.img on micro SD what I've found on the official OLIMEX wiki page.
Any help?
Greetings
wiesel24
Where is it on Olimex wiki? Search finds nothing by that name.
John
https://www.olimex.com/wiki/A20-OLinuXino-MICRO#Android (https://www.olimex.com/wiki/A20-OLinuXino-MICRO#Android) there are two links. One is for the NAND Version of A20 Board and the other is for the SD Card.
Greetings ;)
I see lots of links. Which one? Some are A13...
John
A13 means only the A13 Touchscreens, so olimex didn't made different TS for A20. But these links are for A20 board with A13 Touchscreens. They are linked to https://docs.google.com/file/d/0B-bAEPML8fwlUFd5OHVOaFJIRmc/edit (https://docs.google.com/file/d/0B-bAEPML8fwlUFd5OHVOaFJIRmc/edit) for A20 board with A13 7" TS SD-Card Image or to https://docs.google.com/file/d/0B-bAEPML8fwlc1F6TkNIcmlWcjQ/edit (https://docs.google.com/file/d/0B-bAEPML8fwlc1F6TkNIcmlWcjQ/edit) for A20 board with A13 10" TS SD-Card Image.
Greets
Wiesel
A20 probably needs something different, it's a dual CPU and look at the error.
Are you using the right U-boot and so on? Something like that is clearly wrong.
John
isnt A20_SD_android_422_Phoenix_TS_USB_UART_I2C_WIFI_LAN_HDMI_LCD_800x480_release_1.img 509M file
for OLinuXino-A20 ?
what format is it ? parted does not list partitions (msdos or gpt?)