[v2,5/6] board: lx2160aqds: implement board_fit_config_name_match

In case CONFIG_DM_ETH and CONFIG_MULTI_DTB_FIT are enabled implement the
board_fit_config_name_match() function in order to choose the
appropriate DTS for the current SERDES protocol configuration.

Signed-off-by: Ioana Ciornei <ioana.ciornei at nxp.com>
---
Changes in v2:
 - none

 board/freescale/lx2160a/eth_lx2160aqds.c | 109 +++++++++++++++++++++++
 1 file changed, 109 insertions(+)

> -----Original Message-----
> From: Ioana Ciornei <ioana.ciornei at nxp.com>
> Sent: Monday, April 27, 2020 3:21 PM
> To: Priyanka Jain <priyanka.jain at nxp.com>; u-boot at lists.denx.de
> Cc: Alexandru Marginean <alexandru.marginean at nxp.com>; Madalin Bucur
> <madalin.bucur at nxp.com>; Florin Laurentiu Chiculita
> <florinlaurentiu.chiculita at nxp.com>; Razvan Ionut Cirjan
> <razvanionut.cirjan at nxp.com>; Ioana Ciornei <ioana.ciornei at nxp.com>
> Subject: [PATCH v2 5/6] board: lx2160aqds: implement
> board_fit_config_name_match
> 
> In case CONFIG_DM_ETH and CONFIG_MULTI_DTB_FIT are enabled
> implement the
> board_fit_config_name_match() function in order to choose the appropriate
> DTS for the current SERDES protocol configuration.
> 
> Signed-off-by: Ioana Ciornei <ioana.ciornei at nxp.com>

Reviewed-by: Razvan Ionut Cirjan <razvanionut.cirjan at nxp.com>

Thanks,
Razvan

> ---
> Changes in v2:
>  - none
> 
>  board/freescale/lx2160a/eth_lx2160aqds.c | 109 +++++++++++++++++++++++
>  1 file changed, 109 insertions(+)
> 
> diff --git a/board/freescale/lx2160a/eth_lx2160aqds.c
> b/board/freescale/lx2160a/eth_lx2160aqds.c
> index 3b7830343d1e..d90b5c3e3a2f 100644
> --- a/board/freescale/lx2160a/eth_lx2160aqds.c
> +++ b/board/freescale/lx2160a/eth_lx2160aqds.c
> @@ -848,3 +848,112 @@ int fdt_fixup_board_phy(void *fdt)  }  #endif //
> CONFIG_FSL_MC_ENET  #endif
> +
> +#if defined(CONFIG_DM_ETH) && defined(CONFIG_MULTI_DTB_FIT)
> +
> +/* Structure to hold SERDES protocols supported in case of
> + * CONFIG_DM_ETH enabled (network interfaces are described in the DTS).
> + *
> + * @serdes_block: the index of the SERDES block
> + * @serdes_protocol: the decimal value of the protocol supported
> + * @dts_needed: DTS notes describing the current configuration are
> +needed
> + *
> + * When dts_needed is true, the board_fit_config_name_match() function
> + * will try to exactly match the current configuration of the block
> +with a DTS
> + * name provided.
> + */
> +static struct serdes_configuration {
> +	u8 serdes_block;
> +	u32 serdes_protocol;
> +	bool dts_needed;
> +} supported_protocols[] = {
> +	/* Serdes block #1 */
> +	{1, 3, true},
> +	{1, 7, true},
> +	{1, 19, true},
> +	{1, 20, true},
> +
> +	/* Serdes block #2 */
> +	{2, 2, false},
> +	{2, 3, false},
> +	{2, 5, false},
> +	{2, 11, true},
> +
> +	/* Serdes block #3 */
> +	{3, 2, false},
> +	{3, 3, false},
> +};
> +
> +#define SUPPORTED_SERDES_PROTOCOLS ARRAY_SIZE(supported_protocols)
> +
> +static bool protocol_supported(u8 serdes_block, u32 protocol) {
> +	struct serdes_configuration serdes_conf;
> +	int i;
> +
> +	for (i = 0; i < SUPPORTED_SERDES_PROTOCOLS; i++) {
> +		serdes_conf = supported_protocols[i];
> +		if (serdes_conf.serdes_block == serdes_block &&
> +		    serdes_conf.serdes_protocol == protocol)
> +			return true;
> +	}
> +
> +	return false;
> +}
> +
> +static void get_str_protocol(u8 serdes_block, u32 protocol, char *str)
> +{
> +	struct serdes_configuration serdes_conf;
> +	int i;
> +
> +	for (i = 0; i < SUPPORTED_SERDES_PROTOCOLS; i++) {
> +		serdes_conf = supported_protocols[i];
> +		if (serdes_conf.serdes_block == serdes_block &&
> +		    serdes_conf.serdes_protocol == protocol) {
> +			if (serdes_conf.dts_needed == true)
> +				sprintf(str, "%u", protocol);
> +			else
> +				sprintf(str, "x");
> +			return;
> +		}
> +	}
> +}
> +
> +int board_fit_config_name_match(const char *name) {
> +	struct ccsr_gur *gur = (void *)(CONFIG_SYS_FSL_GUTS_ADDR);
> +	u32 rcw_status = in_le32(&gur->rcwsr[28]);
> +	char srds_s1_str[2], srds_s2_str[2], srds_s3_str[2];
> +	u32 srds_s1, srds_s2, srds_s3;
> +	char expected_dts[100];
> +
> +	srds_s1 = rcw_status & FSL_CHASSIS3_RCWSR28_SRDS1_PRTCL_MASK;
> +	srds_s1 >>= FSL_CHASSIS3_RCWSR28_SRDS1_PRTCL_SHIFT;
> +
> +	srds_s2 = rcw_status & FSL_CHASSIS3_RCWSR28_SRDS2_PRTCL_MASK;
> +	srds_s2 >>= FSL_CHASSIS3_RCWSR28_SRDS2_PRTCL_SHIFT;
> +
> +	srds_s3 = rcw_status & FSL_CHASSIS3_RCWSR28_SRDS3_PRTCL_MASK;
> +	srds_s3 >>= FSL_CHASSIS3_RCWSR28_SRDS3_PRTCL_SHIFT;
> +
> +	/* Check for supported protocols. The default DTS will be used
> +	 * in this case
> +	 */
> +	if (!protocol_supported(1, srds_s1) ||
> +	    !protocol_supported(2, srds_s2) ||
> +	    !protocol_supported(3, srds_s3))
> +		return -1;
> +
> +	get_str_protocol(1, srds_s1, srds_s1_str);
> +	get_str_protocol(2, srds_s2, srds_s2_str);
> +	get_str_protocol(3, srds_s3, srds_s3_str);
> +
> +	sprintf(expected_dts, "fsl-lx2160a-qds-%s-%s-%s",
> +		srds_s1_str, srds_s2_str, srds_s3_str);
> +
> +	if (!strcmp(name, expected_dts))
> +		return 0;
> +
> +	return -1;
> +}
> +#endif
> --
> 2.17.1