[PATCH] board: amlogic: vim3: configure serial# from ethaddr

[Neil Armstrong]

On 19/01/2022 15:24, Mattijs Korpershoek wrote:
> The Khadas VIM3 and VIM3L boards, which are supported in Android via
> Yukawa [1] need a serial number for usb/fastboot enumeration.
> 
> Whenever the environment does not provide a serial#, use the eth mac
> address as serial#.
> 
> [1] https://source.android.com/setup/build/devices#vim3_and_vim3l_boards
> Signed-off-by: Mattijs Korpershoek <mkorpershoek at baylibre.com>
> ---
>  board/amlogic/vim3/vim3.c | 9 +++++++++
>  1 file changed, 9 insertions(+)
> 
> diff --git a/board/amlogic/vim3/vim3.c b/board/amlogic/vim3/vim3.c
> index 5d9ac6458d68..fcd60ab1e058 100644
> --- a/board/amlogic/vim3/vim3.c
> +++ b/board/amlogic/vim3/vim3.c
> @@ -153,6 +153,7 @@ int misc_init_r(void)
>  {
>  	u8 mac_addr[MAC_ADDR_LEN];
>  	char efuse_mac_addr[EFUSE_MAC_SIZE], tmp[3];
> +	char serial_string[EFUSE_MAC_SIZE + 1];
>  	ssize_t len;
>  
>  	if (!eth_env_get_enetaddr("ethaddr", mac_addr)) {
> @@ -177,5 +178,13 @@ int misc_init_r(void)
>  		eth_env_get_enetaddr("ethaddr", mac_addr);
>  	}
>  
> +	if (!env_get("serial#")) {
> +		eth_env_get_enetaddr("ethaddr", mac_addr);
> +		sprintf(serial_string, "%02X%02X%02X%02X%02X%02X",
> +			mac_addr[0], mac_addr[1], mac_addr[2],
> +			mac_addr[3], mac_addr[4], mac_addr[5]);
> +		env_set("serial#", serial_string);
> +	}
> +
>  	return 0;
>  }
> 

Reviewed-by: Neil Armstrong <narmstrong at baylibre.com>