This patch sets the serial# environment variable by reading the
board serial number from the OTP memory region.
Signed-off-by: Sagar Shrikant Kadam <sagar.ka...@sifive.com>
Reviewed-by: Anup Patel <a...@brainfault.org>
---
board/sifive/fu540/fu540.c | 18 ++++++++++++++----
1 file changed, 14 insertions(+), 4 deletions(-)
diff --git a/board/sifive/fu540/fu540.c b/board/sifive/fu540/fu540.c
index 11daf1a..47a2090 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;
}
--
2.7.4
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