From a209362a5d9b2c02d7562f8d3c14ea5bdbb4ec23 Mon Sep 17 00:00:00 2001 From: Marek Szyprowski Date: Mon, 7 Dec 2020 14:33:54 +0100 Subject: [PATCH] amlogic: vim3: add code for reading ethernet MAC address from efuse Add a simple code for reading built-in ethernet MAC address from efuse. Signed-off-by: Marek Szyprowski Change-Id: Ic1c39da270bc58f3b8e89a0631494e779281d46d --- board/amlogic/w400/w400.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/board/amlogic/w400/w400.c b/board/amlogic/w400/w400.c index 1636415503..a420557920 100644 --- a/board/amlogic/w400/w400.c +++ b/board/amlogic/w400/w400.c @@ -12,6 +12,11 @@ #include #include #include +#include + +#define EFUSE_MAC_OFFSET 0 +#define EFUSE_MAC_SIZE 6 +#define MAC_ADDR_LEN 6 int mmc_get_env_dev(void) { @@ -23,7 +28,26 @@ int mmc_get_env_dev(void) int misc_init_r(void) { + u8 mac_addr[MAC_ADDR_LEN]; + char efuse_mac_addr[EFUSE_MAC_SIZE]; + 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, + efuse_mac_addr, EFUSE_MAC_SIZE); + if (len != EFUSE_MAC_SIZE) + return 0; + + for (int i = 0; i < 6; i++) + mac_addr[i] = efuse_mac_addr[i]; + + if (is_valid_ethaddr(mac_addr)) + eth_env_set_enetaddr("ethaddr", mac_addr); + else + meson_generate_serial_ethaddr(); + } + return 0; } -- 2.34.1