[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 <narmstr...@baylibre.com>

Signed-off-by: Artem Lapkin <a...@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