[PATCH 3/4] board: turris: Allow to specify first eth idx of first MAC address

["Pali Rohár" <pali@kernel.org>]

Turris Omnia uses first MAC address from OTP for second ethernet interface.
Second MAC address for third interface and third MAC address for first
interface.

Other Turris routers do not have this rotate by one mapping. So add
function parameter for specifying id of the first ethernet interface.

Signed-off-by: Pali Rohár <pali@kernel.org>
---
 board/CZ.NIC/turris_atsha_otp.c          | 8 ++++----
 board/CZ.NIC/turris_atsha_otp.h          | 2 +-
 board/CZ.NIC/turris_omnia/turris_omnia.c | 2 +-
 3 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/board/CZ.NIC/turris_atsha_otp.c b/board/CZ.NIC/turris_atsha_otp.c
index 840721a9b737..7a39b7f61d5d 100644
--- a/board/CZ.NIC/turris_atsha_otp.c
+++ b/board/CZ.NIC/turris_atsha_otp.c
@@ -49,7 +49,7 @@ static void set_mac_if_invalid(int i, u8 *mac)
 		eth_env_set_enetaddr_by_index("eth", i, mac);
 }
 
-int turris_atsha_otp_init_mac_addresses(void)
+int turris_atsha_otp_init_mac_addresses(int first_idx)
 {
 	struct udevice *dev = get_atsha204a_dev();
 	u8 mac0[4], mac1[4], mac[6];
@@ -81,11 +81,11 @@ int turris_atsha_otp_init_mac_addresses(void)
 	mac[4] = mac1[2];
 	mac[5] = mac1[3];
 
-	set_mac_if_invalid(1, mac);
+	set_mac_if_invalid((first_idx + 0) % 3, mac);
 	increment_mac(mac);
-	set_mac_if_invalid(2, mac);
+	set_mac_if_invalid((first_idx + 1) % 3, mac);
 	increment_mac(mac);
-	set_mac_if_invalid(0, mac);
+	set_mac_if_invalid((first_idx + 2) % 3, mac);
 
 	return 0;
 }
diff --git a/board/CZ.NIC/turris_atsha_otp.h b/board/CZ.NIC/turris_atsha_otp.h
index 667d01af7310..bd4308fdc3ef 100644
--- a/board/CZ.NIC/turris_atsha_otp.h
+++ b/board/CZ.NIC/turris_atsha_otp.h
@@ -3,7 +3,7 @@
 #ifndef TURRIS_ATSHA_OTP_H
 #define TURRIS_ATSHA_OTP_H
 
-int turris_atsha_otp_init_mac_addresses(void);
+int turris_atsha_otp_init_mac_addresses(int first_idx);
 int turris_atsha_otp_get_serial_number(u32 *version_num, u32 *serial_num);
 
 #endif
diff --git a/board/CZ.NIC/turris_omnia/turris_omnia.c b/board/CZ.NIC/turris_omnia/turris_omnia.c
index 719e8750e60a..da2fee578c44 100644
--- a/board/CZ.NIC/turris_omnia/turris_omnia.c
+++ b/board/CZ.NIC/turris_omnia/turris_omnia.c
@@ -606,7 +606,7 @@ int show_board_info(void)
 
 int misc_init_r(void)
 {
-	turris_atsha_otp_init_mac_addresses();
+	turris_atsha_otp_init_mac_addresses(1);
 	return 0;
 }
 
-- 
2.20.1