[PATCH] board: amlogic: vim3: fix setup ethernet mac from efuse

[Artem Lapkin]

Fix reading built-in ethernet MAC address from efuse

NOTE: MAC is stored in ASCII format, 1bytes = 2characters by 0 offset

if mac from efuse not valid we use meson_generate_serial_ethaddr

NOTE: remake odroid-n2.c variant from Neil Armstrong <narmstrong at baylibre.com>

Signed-off-by: Artem Lapkin <art at khadas.com>
---
 board/amlogic/vim3/vim3.c | 22 +++++++++++++++++++---
 1 file changed, 19 insertions(+), 3 deletions(-)

diff --git a/board/amlogic/vim3/vim3.c b/board/amlogic/vim3/vim3.c
index 824fff8262..87d9fe1f02 100644
--- a/board/amlogic/vim3/vim3.c
+++ b/board/amlogic/vim3/vim3.c
@@ -139,26 +139,42 @@ int meson_ft_board_setup(void *blob, struct bd_info *bd)
 }
 
 #define EFUSE_MAC_OFFSET	0
-#define EFUSE_MAC_SIZE		6
+#define EFUSE_MAC_SIZE		12
+#define MAC_ADDR_LEN		6
 
 int misc_init_r(void)
 {
-	uint8_t mac_addr[EFUSE_MAC_SIZE];
+	uint8_t mac_addr[MAC_ADDR_LEN];
+	char efuse_mac_addr[EFUSE_MAC_SIZE], tmp[3];
 	ssize_t len;
 
 	meson_eth_init(PHY_INTERFACE_MODE_RGMII, 0);
 
 	if (!eth_env_get_enetaddr("ethaddr", mac_addr)) {
 		len = meson_sm_read_efuse(EFUSE_MAC_OFFSET,
-					  mac_addr, EFUSE_MAC_SIZE);
+					  efuse_mac_addr, EFUSE_MAC_SIZE);
 		if (len != EFUSE_MAC_SIZE)
 			return 0;
 
+		/* MAC is stored in ASCII format, 1bytes = 2characters */
+		for (int i = 0; i < 6; i++) {
+			tmp[0] = efuse_mac_addr[i * 2];
+			tmp[1] = efuse_mac_addr[i * 2 + 1];
+			tmp[2] = '\0';
+			mac_addr[i] = simple_strtoul(tmp, NULL, 16);
+		}
+
 		if (is_valid_ethaddr(mac_addr))
 			eth_env_set_enetaddr("ethaddr", mac_addr);
 		else
 			meson_generate_serial_ethaddr();
+
+		eth_env_get_enetaddr("ethaddr", mac_addr);
+		printf("[i] setup onboard mac %02X:%02X:%02X:%02X:%02X:%02X\n",
+			mac_addr[0],mac_addr[1],mac_addr[2],
+			mac_addr[3],mac_addr[4],mac_addr[5]);
 	}
 
 	return 0;
 }
+
-- 
2.25.1