From: Ramon Fried <ramon.fried@gmail.com>
Date: Fri, 3 Aug 2018 13:25:36 +0000 (+0300)
Subject: snapdragon: added MAC generation functions
X-Git-Url: http://git.dujemihanovic.xyz/img/sics.gif?a=commitdiff_plain;h=e0b04a15250a4aff28f1ab34812e9449098fa978;p=u-boot.git

snapdragon: added MAC generation functions

Add support for generation of unique MAC address
that is derived from board serial.
Algorithm for generation of MAC taken from LK.

Signed-off-by: Ramon Fried <ramon.fried@gmail.com>
---

diff --git a/arch/arm/mach-snapdragon/include/mach/misc.h b/arch/arm/mach-snapdragon/include/mach/misc.h
index 5af6ae8da4..c60e3e4724 100644
--- a/arch/arm/mach-snapdragon/include/mach/misc.h
+++ b/arch/arm/mach-snapdragon/include/mach/misc.h
@@ -8,5 +8,6 @@
 #define MISC_H
 
 u32 msm_board_serial(void);
+void msm_generate_mac_addr(u8 *mac);
 
 #endif
diff --git a/arch/arm/mach-snapdragon/misc.c b/arch/arm/mach-snapdragon/misc.c
index 678bd69f83..f6c87866c0 100644
--- a/arch/arm/mach-snapdragon/misc.c
+++ b/arch/arm/mach-snapdragon/misc.c
@@ -35,3 +35,19 @@ u32 msm_board_serial(void)
 
 	return UNSTUFF_BITS(mmc_dev->cid, 16, 32);
 }
+
+void msm_generate_mac_addr(u8 *mac)
+{
+	int i;
+	char sn[9];
+
+	snprintf(sn, 8, "%08x", msm_board_serial());
+
+	/* fill in the mac with serialno, use locally adminstrated pool */
+	mac[0] = 0x02;
+	mac[1] = 00;
+	for (i = 3; i >= 0; i--) {
+		mac[i + 2] = simple_strtoul(&sn[2 * i], NULL, 16);
+		sn[2 * i] = 0;
+	}
+}