[PATCH] startup: introduce global.endianness variable

[Sascha Hauer]

Hi Antony,

On Mon, Apr 26, 2021 at 05:30:25PM +0300, Antony Pavlov wrote:
> The global.endianness variable makes it possible
> to determine current endian mode from command
> line or from script on bi-endian capable system.
> 
> Signed-off-by: Antony Pavlov <antonynpavlov at gmail.com>
> ---
>  common/globalvar.c | 10 ++++++++++
>  1 file changed, 10 insertions(+)
> 
> diff --git a/common/globalvar.c b/common/globalvar.c
> index a55b38b00f..75ce6331b7 100644
> --- a/common/globalvar.c
> +++ b/common/globalvar.c
> @@ -641,6 +641,8 @@ int globalvar_add_simple_ip(const char *name, IPaddr_t *ip)
>  
>  static int globalvar_init(void)
>  {
> +	const char *endianness;
> +
>  	register_device(&global_device);
>  
>  	if (IS_ENABLED(CONFIG_NVVAR))
> @@ -651,6 +653,13 @@ static int globalvar_init(void)
>  	if (strlen(buildsystem_version_string) > 0)
>  		globalvar_add_simple("buildsystem.version", buildsystem_version_string);
>  
> +	if (IS_ENABLED(CONFIG_CPU_BIG_ENDIAN))
> +		endianness = "big";
> +	else
> +		endianness = "little";

PowerPC is for sure big endian, but doesn't set CONFIG_CPU_BIG_ENDIAN,
so will be erroneously be identified as little endian with this patch.
Either you fix that or depend on something like #if __BYTE_ORDER ==
__LITTLE_ENDIAN

Sascha

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