unlock gk7605v100

[prchal]

Hi,
original u-boot is password locked, so I run u-boot by loading it with burn:
./burn --chip gk7205v300 --file=../u-boot-gk7605v100-universal.bin --break
I get promt:
OpenIPC #
then I can do all commands (unlock, erase and write serial flash) with success:
OpenIPC # sf probe
OpenIPC # sf lock 0
unlock all block.
OpenIPC # sf erase 0x0 0x50000; sf write 0x42000000 0x0 0x50000
Erasing at 0x50000 -- 100% complete.
SF: 327680 bytes @ 0x0 Erased: OK
device 0 offset 0x0, size 0x50000
Writing at 0x50000 -- 100% complete.
SF: 327680 bytes @ 0x0 Written: OK
OpenIPC #
but in flash is still original u-boot (read out and compared).
What I'm doing wrong?
Thanks

[prchal]

Don't mind, I upgrade it by IPCam_DMS
https://team.openipc.org/ipcam_dms/IPCam_DMS_20201121_EN.zip

[sharad0397]

@prchal I am facing a similar issue. Can you explain a bit more how you did this?

[dimerr]

u-boot.zip
Use burn to start this uboot
sf probe 0; sf lock 0

Or just start recent kernel from tftp (it just has to start once, no need rootfs or anything)

[sharad0397]

Dimerr - can you elaborate more. My uboot is password protected and I have tried to use burn but it never exceeds past initial shell session?

[sharad0397]

[choeflake]

When writing the data I get a failed message. Anybody an idea? The board is a BLK605V1

`Trying open /dev/tty.usbserial-A50285BI
Welcome to boot-mode

{'name': 'hi3516ev200', 'DDRSTEP0': [4, 224, 45, 229, 36, 0, 159, 229, 36, 16, 159, 229, 0, 16, 128, 229, 32, 0, 159, 229, 32, 16, 159, 229, 4, 16, 128, 228, 0, 224, 128, 229, 4, 240, 157, 228, 239, 190, 173, 222, 239, 190, 173, 222, 239, 190, 173, 222, 60, 1, 2, 18, 120, 86, 52, 18, 64, 1, 2, 18, 117, 106, 105, 122], 'ADDRESS': ['0x04013000', '0x04010500', '0x41000000'], 'FILELEN': ['0x0040', '0x6000'], 'STEPLEN': ['0x0040', '0x0080']}
Sending u-boot/gk7205v300.bin ...
Send DDRSTEP frame...
Send HEAD frame...
Send TAIL frame...
Send HEAD frame...
failedATA frame[ ]0 of 24576
failedATA frame[========== ]1024 of 24576
failedATA frame[==================== ]2048 of 24576
failedATA frame[============================== ]3072 of 24576
failedATA frame[======================================== ]4096 of 24576
failedATA frame[================================================== ]5120 of 24576
failedATA frame[============================================================ ]6144 of 24576
failedATA frame[====================================================================== ]7168 of 24576
failedATA frame[================================================================================ ]8192 of 24576
failedATA frame[========================================================================================== ]9216 of 24576
failedATA frame[==================================================================================================== ]10240 of 24576
failedATA frame[============================================================================================================== ]11264 of 24576`

[widgetii]

Why are you sending gk7205v300 U-Boot binary to gk7605v100 SoC? Something is wrong here

[choeflake]

I also tried with u-boot-gk7605v100-universal.bin (downloaded from firmware releases). But even no luck...

[widgetii]

Please describe step by step what are you doing now while using burn (power off board, etc)

[choeflake]

The board has a POE module attached to it. I power the POE module with a 12V power supply. Furthermore I have connected:
Board -> Serial-To-USB
GND -> GND
TX0 -> RX
RX0 -> TX

The Serial-to-usb is connected to an Apple conversion cable to USB-C on my macbook. When I use the screen tool, I see the boot sequence. I can intercept the boot sequence to get the login prompt of u-boot. So basically the connection TX and RX seems to be working.

To burn, I start the burn tool. The tool waits for a connection. When I connect power to the camera, the tool starts burning.

Using other json settings file and/or other u-boot binaries, I got the failed errors on different phases (HEAD, TAIL, DATA FRAME etc). But there is also an issue when I connect my laptop to the grid, there are move failed messages. For example the above command will then give a failed message at the HEAD frame.

That pointed me to search for a ground issue, tried to shortcut grond from the board to earth, but that did not help. Ground from board to USB ground is ok (zero ohm). I cannot find a power input on the camera board to power the chip for programming.

[widgetii]

It seems that everything is right, I'd try burn on Linux machine to check if you still have these errors

[choeflake]

Using another laptop with Ubuntu Live USB I cloud start and finish the burn process without errors. So thank you for the tip!

But now, installing the OpenIPC firmware failed. As said, I could burn the gk7605v100 universal u-boot file. Then I'm in the u-boot console. Backing up the current firmware over TFTP succeeded. Also I could load the new firmware and save it. But when I reset, the camera still starts with the original u-boot.

The installation instruction describes to intercept the bootloader after entering the reset command. But the bootloader which comes up after the reset is the original one.

[widgetii]

Check U-Boot from the message now and try to unlock your flash

[choeflake]

Using that u-boot.bin causes a failed messages on de second DATA frame. Probably I use the wrong json file (the -c parameter of the burn tool). I tried gk7205v300 and hi3616ev200, as there is no gk7605v100.

[lex232]

Hello! I have a similar problem with gk7605v100 soc.
The steps i took:

1. Connect by UART and determined size of memory - 16mb.
   Unfortunately the bootloader is locked. Next my actions:
2. Download u-boot-gk7605v100-universal.bin, openipc-gk7605v100-lite-16mb.bin and openipc.gk7605v100-nor-lite.tgz from OpenIPC (generated for 16mb).
3. by using BURN:
   python burn --chip gk7205v300 --file=u-boot-gk7605v100-universal.bin -p COM4 --break
   got access to boot and firmware backup.
4. Then i tried from instruction:

setenv ipaddr 192.168.1.10; setenv serverip 192.168.1.254
mw.b 0x42000000 0xff 0x1000000
tftpboot 0x42000000 openipc-gk7605v100-lite-16mb.bin
sf probe 0; sf erase 0x0 0x1000000; sf write 0x42000000 0x0 0x1000000
reset

After reset starting old u-boot with password.
5) Added sf lock 0 to
sf probe 0; sf lock 0, sf erase 0x0 0x1000000; sf write 0x42000000 0x0 0x1000000
-> no result(
6) Tried "Alternatively, flash OpenIPC Firmware by its parts"
-> old bootloader after first reboot (sf lock 0 was added)
7) My last attempt to start kernel after download u-boot:
Download u-boot:

setenv ipaddr 192.168.1.10; setenv serverip 192.168.1.254
mw.b 0x42000000 0xff 0x50000
tftpboot 0x42000000 u-boot-gk7605v100-universal.bin
sf probe 0; sf lock 0; sf erase 0x0 0x50000; sf write 0x42000000 0x0 0x50000

Then in tftp folder i added files: rootfs.squashfs.gk7605v100, rootfs.squashfs.gk7605v100.md5sum, uImage.gk7605v100, uImage.gk7605v100.md5sum from openipc.gk7605v100-nor-lite.tar
And then

run uknor16m; run urnor16m
sf erase 0x750000 0xB0000

And try to start kernel from unbrick instructions:
setenv ipaddr 192.168.1.10; setenv serverip 192.168.1.254; mw.b 0x42000000 0xff 0x1000000; tftpboot 0x42000000 uImage.gk7605v100; bootm 0x42000000

At the end i see message in terminal "starting kernel"
But after reset i also see old bootloader with password(
Please help, which steps are wrong?

P.S. There is another u-boot.bin in this thread, but this file not worked by burn.
Second DATA frame is not transmitted(.