[U-Boot] [PATCH v2] sunxi: Serial number support, obtained from SID bits and passed through ATAG

[Hans de Goede <hdegoede@redhat.com>]

Hi,

On 22-03-15 11:42, Paul Kocialkowski wrote:
> Signed-off-by: Paul Kocialkowski <contact@paulk.fr>

Thanks this version looks good, but I would like to have some more
certainty wrt how to deal with serial numbers in devicetree, where we
may e.g. store the full 128 bits of the sid, so I've send a mail
to the devicetree list about this with you in the Cc.

Regards,

Hans

> ---
>   board/sunxi/board.c            | 51 +++++++++++++++++++++++++++++++++---------
>   include/configs/sunxi-common.h |  1 +
>   2 files changed, 41 insertions(+), 11 deletions(-)
>
> diff --git a/board/sunxi/board.c b/board/sunxi/board.c
> index e1891d1..d117558 100644
> --- a/board/sunxi/board.c
> +++ b/board/sunxi/board.c
> @@ -241,24 +241,53 @@ static struct musb_hdrc_platform_data musb_plat = {
>   };
>   #endif
>
> +#ifdef CONFIG_SERIAL_TAG
> +void get_board_serial(struct tag_serialnr *serialnr)
> +{
> +	char *serial_string = getenv("serial#");
> +	unsigned long long serial;
> +
> +	if (serial_string) {
> +		serial = simple_strtoull(serial_string, NULL, 16);
> +
> +		serialnr->high = (unsigned int) (serial >> 32);
> +		serialnr->low = (unsigned int) (serial & 0xffffffff);
> +	} else {
> +		serialnr->high = 0;
> +		serialnr->low = 0;
> +	}
> +}
> +#endif
> +
>   #ifdef CONFIG_MISC_INIT_R
>   int misc_init_r(void)
>   {
> +	char serial_string[17] = { 0 };
>   	unsigned int sid[4];
> +	uint8_t mac_addr[6];
> +	int ret;
> +
> +	ret = sunxi_get_sid(sid);
> +	if (ret == 0 && sid[0] != 0 && sid[3] != 0) {
> +		if (!getenv("ethaddr")) {
> +			/* Non OUI / registered MAC address */
> +			mac_addr[0] = 0x02;
> +			mac_addr[1] = (sid[0] >>  0) & 0xff;
> +			mac_addr[2] = (sid[3] >> 24) & 0xff;
> +			mac_addr[3] = (sid[3] >> 16) & 0xff;
> +			mac_addr[4] = (sid[3] >>  8) & 0xff;
> +			mac_addr[5] = (sid[3] >>  0) & 0xff;
> +
> +			eth_setenv_enetaddr("ethaddr", mac_addr);
> +		}
>
> -	if (!getenv("ethaddr") && sunxi_get_sid(sid) == 0 &&
> -			sid[0] != 0 && sid[3] != 0) {
> -		uint8_t mac_addr[6];
> +		if (!getenv("serial#")) {
> +			snprintf(serial_string, sizeof(serial_string),
> +				"%08x%08x", sid[0], sid[3]);
>
> -		mac_addr[0] = 0x02; /* Non OUI / registered MAC address */
> -		mac_addr[1] = (sid[0] >>  0) & 0xff;
> -		mac_addr[2] = (sid[3] >> 24) & 0xff;
> -		mac_addr[3] = (sid[3] >> 16) & 0xff;
> -		mac_addr[4] = (sid[3] >>  8) & 0xff;
> -		mac_addr[5] = (sid[3] >>  0) & 0xff;
> +			setenv("serial#", serial_string);
>
> -		eth_setenv_enetaddr("ethaddr", mac_addr);
> -	}
> +		}
>
>   #if defined(CONFIG_MUSB_HOST) || defined(CONFIG_MUSB_GADGET)
>   	musb_register(&musb_plat, NULL, (void *)SUNXI_USB0_BASE);
> diff --git a/include/configs/sunxi-common.h b/include/configs/sunxi-common.h
> index 1f7a1cb..b9bb971 100644
> --- a/include/configs/sunxi-common.h
> +++ b/include/configs/sunxi-common.h
> @@ -98,6 +98,7 @@
>   #define CONFIG_SETUP_MEMORY_TAGS
>   #define CONFIG_CMDLINE_TAG
>   #define CONFIG_INITRD_TAG
> +#define CONFIG_SERIAL_TAG
>
>   /* mmc config */
>   #if !defined(CONFIG_UART0_PORT_F)
>