I would like to know difference between BOOTBRANCH and BOOTBRANCH_BOARD

[buldo]

Which feature would you like to have?

I think that documentation miss description for BOOTBRANCH and BOOTBRANCH_BOARD variables.
I trying to add support for luckfox core3566. I already created image with yocto and trying to apply my progress to armbian but not understand some variables.

Funding

• I am willing to cover expenses

[github-actions]

Jira ticket: AR-2026

[rpardini]

You're right to be confused. BOOTBRANCH points to the branch/tag/commit to use as git base for u-boot.
BOOTBRANCH is usually defined by family code, before we had extensibility/hooks available, so family code was littered with "if board == xyz then this branch", causing board/family mixups.
BOOTBRANCH_BOARD was introduced as a pre-hooks way to let the board (not the family) set the branch.
Similar was done, I think, for BOOTPATCHDIR?

[buldo]

@rpardini now I more confused.
Before your answer I used BOOTBRANCH in my board.csc file and build framework understands it without problem.
Moreover more than 10 board definition files use BOOTBRANCH variable.

1. Have I use BOOTBRANCH_BOARD instead BOOTBRANCH in my board.csc?
2. If BOOTBRANCH variable prohibited to use in board file maybe it have to be some validations in build steps?