Re: [DistroKit] [PATCH] v8a: barebox: compress with XZ

[Marco Felsch <m.felsch@pengutronix.de>]

On 24-03-18, Ahmad Fatoum wrote:
> This saves us 124K, which we dearly need, because otherwise barebox
> would overlap the environment partition. The environment partition
> is reserved in the genimage config, but it's used due to the description
> in the barebox device tree. We may want to change both, but for now, buy
> us some time by switching from LZO to XZ.

Why not making use of ZSTD instead?

Regards,
  Marco

> Reported-by: Michael Olbrich <mol@pengutronix.de>
> Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
> ---
>  configs/platform-v8a/barebox.config | 13 ++++++++++---
>  1 file changed, 10 insertions(+), 3 deletions(-)
> 
> diff --git a/configs/platform-v8a/barebox.config b/configs/platform-v8a/barebox.config
> index 26be35533173..699b4f324afa 100644
> --- a/configs/platform-v8a/barebox.config
> +++ b/configs/platform-v8a/barebox.config
> @@ -163,9 +163,9 @@ CONFIG_USE_COMPRESSED_DTB=y
>  CONFIG_PBL_RELOCATABLE=y
>  CONFIG_IMAGE_COMPRESSION=y
>  # CONFIG_IMAGE_COMPRESSION_LZ4 is not set
> -CONFIG_IMAGE_COMPRESSION_LZO=y
> +# CONFIG_IMAGE_COMPRESSION_LZO is not set
>  # CONFIG_IMAGE_COMPRESSION_GZIP is not set
> -# CONFIG_IMAGE_COMPRESSION_XZKERN is not set
> +CONFIG_IMAGE_COMPRESSION_XZKERN=y
>  # CONFIG_IMAGE_COMPRESSION_NONE is not set
>  CONFIG_MMU=y
>  CONFIG_BAREBOX_MAX_IMAGE_SIZE=0xffffffff
> @@ -1063,7 +1063,14 @@ CONFIG_ZLIB=y
>  # CONFIG_BZLIB is not set
>  # CONFIG_LZ4_DECOMPRESS is not set
>  # CONFIG_ZSTD_DECOMPRESS is not set
> -# CONFIG_XZ_DECOMPRESS is not set
> +CONFIG_XZ_DECOMPRESS=y
> +CONFIG_XZ_DEC_X86=y
> +CONFIG_XZ_DEC_POWERPC=y
> +CONFIG_XZ_DEC_IA64=y
> +CONFIG_XZ_DEC_ARM=y
> +CONFIG_XZ_DEC_ARMTHUMB=y
> +CONFIG_XZ_DEC_SPARC=y
> +CONFIG_XZ_DEC_ARM64=y
>  # CONFIG_BASE64 is not set
>  CONFIG_GENERIC_FIND_NEXT_BIT=y
>  CONFIG_PROCESS_ESCAPE_SEQUENCE=y
> -- 
> 2.39.2
> 
> 
>