From cba0635386df71f7f39d940938811fdf279f83d2 Mon Sep 17 00:00:00 2001 From: Sagar Shrikant Kadam Date: Mon, 12 Aug 2019 07:57:40 -0700 Subject: [PATCH] riscv: sifive: fu540: set serial environment variable from otp This patch sets the serial# environment variable by reading the board serial number from the OTP memory region. Signed-off-by: Sagar Shrikant Kadam Reviewed-by: Anup Patel Reviewed-by: Bin Meng Tested-by: Bin Meng --- board/sifive/fu540/fu540.c | 16 +++++++++++++--- 1 file changed, 13 insertions(+), 3 deletions(-) diff --git a/board/sifive/fu540/fu540.c b/board/sifive/fu540/fu540.c index 11daf1a75a..47a2090251 100644 --- a/board/sifive/fu540/fu540.c +++ b/board/sifive/fu540/fu540.c @@ -122,10 +122,20 @@ static void fu540_setup_macaddr(u32 serialnum) int misc_init_r(void) { - /* Set ethaddr environment variable if not set */ - if (!env_get("ethaddr")) - fu540_setup_macaddr(fu540_read_serialnum()); + u32 serial_num; + char buf[9] = {0}; + /* Set ethaddr environment variable from board serial number */ + if (!env_get("serial#")) { + serial_num = fu540_read_serialnum(); + if (!serial_num) { + WARN(true, "Board serial number should not be 0 !!\n"); + return 0; + } + snprintf(buf, sizeof(buf), "%08x", serial_num); + env_set("serial#", buf); + fu540_setup_macaddr(serial_num); + } return 0; }