Best posts made by perillamint .

Hello.

I'm trying to build bootloader for my Omega 2. I don't like Omega2's stock bootloader because it does not allow me to flash using TFTP over Ethernet or other various features exists in Ralink U-Boot (i.e. Linkit 7688's one, various Mediatek based home wrts, etc). Since bootloader flashing is quite dangerous (possible to "hard brick" it -- need heat gun and SOIC clip to re-flash it), I want to minimize my mistake. So I looked for Omega2's hacked Ralink U-Boot source code but I couldn't find any.

My question is:

• Ralink U-Boot is based on U-Boot (GPLv2). Also, Omega2's bootloader seems to based on Ralink U-Boot (It clearly states "Onion Omega2 UBoot Version: 4.3.0.3" in their bootloader UART output), so it is subjected to GPLv2. So Onion MUST release its source code. but I cannot find one. Are they violating GPL?
• Whether Onion keeps violating GPL or not, I'm going to compile Linkit bootloader or Padavan bootloader for my Omega. Is there any major chip list (SPI flash, DRAM, etc) available? I just don't want hurting Omega2's EMI shield to read part numbers.

Hello, I'm currently trying to flash Linkit 7688 u-boot to Omega 2. (Yes, I know it may hard brick my omega 2) However, I don't want to use in-circuit programming because it requires some bothering tasks like de-solder EMI shield and solder leads on SPI flash, etc.

At first, I removed read-only from Omega2 DTB. No luck here.
Second, I tried to flash it using U-Bot shell. I tried this command with firmware partition which is easily recoverable.

Using U-Boot shell, I successfully loaded firmware blob into 0x80000000 and able to erase SPI flash (tried it with easily recoverable firmware partition), but when I executed cp command, it says

Omega2 # cp .b 0x80000000 0x50000 6815914
Usage:
cp      - memory copy

I also tried this

Omega2 # cp 0x80000000 0x50000 6815914
Usage:
cp      - memory copy

It seems U-Boot cp command does not work as expected.

How can I flash u-boot partition? Does someone knows how to do it?