On Thu, Apr 09, 2026 at 01:54:19PM +0200, Herve Codina wrote:
> tree.S is used to generate custom dtbs. It uses the treehdr macro to
> build the header part.
> 
> The current definition of this macro doesn't allow to set custom
> settings related to version fields.
> 
> In order to easily generate some dtb with custom version values without
> duplicating the full header computation, introduce the treehdr_vers
> macro.
> 
> The modification doesn't introduce any functional changes.
> 
> Signed-off-by: Herve Codina <herve.codina@bootlin.com>

I just killed the not-very-portable trees.S in the main git tree, so
this will need reworking for the new treegen.c system.

> ---
>  tests/trees.S | 10 +++++++---
>  1 file changed, 7 insertions(+), 3 deletions(-)
> 
> diff --git a/tests/trees.S b/tests/trees.S
> index d69f7f1..4db2b9b 100644
> --- a/tests/trees.S
> +++ b/tests/trees.S
> @@ -8,7 +8,7 @@
>  	.byte	(\val) & 0xff
>  	.endm
>  
> -	.macro	treehdr	tree
> +	.macro	treehdr_vers	tree vers last_comp_vers
>  	.balign	8
>  	.globl	\tree
>  \tree :
> @@ -17,13 +17,17 @@
>  	fdtlong	(\tree\()_struct - \tree)
>  	fdtlong	(\tree\()_strings - \tree)
>  	fdtlong	(\tree\()_rsvmap - \tree)
> -	fdtlong	0x11
> -	fdtlong	0x10
> +	fdtlong	\vers
> +	fdtlong	\last_comp_vers
>  	fdtlong	0
>  	fdtlong	(\tree\()_strings_end - \tree\()_strings)
>  	fdtlong	(\tree\()_struct_end - \tree\()_struct)
>  	.endm
>  
> +	.macro	treehdr	tree
> +	treehdr_vers \tree 0x11 0x10
> +	.endm
> +
>  	.macro	rsvmape	addrh, addrl, lenh, lenl
>  	fdtlong	\addrh
>  	fdtlong	\addrl
> -- 
> 2.53.0
> 
> 

-- 
David Gibson (he or they)	| I'll have my music baroque, and my code
david AT gibson.dropbear.id.au	| minimalist, thank you, not the other way
				| around.
http://www.ozlabs.org/~dgibson