km/ivm: allow to set locally administred MAC addresses

[people/ms/u-boot.git] / board / keymile / common / ivm.c

diff --git a/board/keymile/common/ivm.c b/board/keymile/common/ivm.c
index 3495fafffe6a5e9b579d99e16e54643474ebca78..e9e518cf7257165d0e647d340ff6a865639d2ee1 100644 (file)
--- a/board/keymile/common/ivm.c
+++ b/board/keymile/common/ivm.c
@@ -189,7 +189,7 @@ static int ivm_check_crc(unsigned char *buf, int block)
 
 /* take care of the possible MAC address offset and the IVM content offset */
 static int process_mac(unsigned char *valbuf, unsigned char *buf,
-                               int offset)
+                               int offset, bool unique)
 {
        unsigned char mac[6];
        unsigned long val = (buf[4] << 16) + (buf[5] << 8) + buf[6];
@@ -199,6 +199,13 @@ static int process_mac(unsigned char *valbuf, unsigned char *buf,
         */
        memcpy(mac, buf+1, 6);
 
+       /* MAC adress can be set to locally administred, this is only allowed
+        * for interfaces which have now connection to the outside. For these
+        * addresses we need to set the second bit in the first byte.
+        */
+       if (!unique)
+               mac[0] |= 0x2;
+
        if (offset) {
                val += offset;
                mac[3] = (val >> 16) & 0xff;
@@ -300,12 +307,23 @@ static int ivm_populate_env(unsigned char *buf, int len)
                return 0;
        page2 = &buf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN*2];
 
+#ifndef CONFIG_KMTEGR1
        /* if an offset is defined, add it */
-       process_mac(valbuf, page2, CONFIG_PIGGY_MAC_ADRESS_OFFSET);
+       process_mac(valbuf, page2, CONFIG_PIGGY_MAC_ADRESS_OFFSET, true);
        setenv((char *)"ethaddr", (char *)valbuf);
 #ifdef CONFIG_KMVECT1
 /* KMVECT1 has two ethernet interfaces */
-       process_mac(valbuf, page2, 1);
+       process_mac(valbuf, page2, 1, true);
+       setenv((char *)"eth1addr", (char *)valbuf);
+#endif
+#else
+/* KMTEGR1 has a special setup. eth0 has no connection to the outside and
+ * gets an locally administred MAC address, eth1 is the debug interface and
+ * gets the official MAC address from the IVM
+ */
+       process_mac(valbuf, page2, CONFIG_PIGGY_MAC_ADRESS_OFFSET, false);
+       setenv((char *)"ethaddr", (char *)valbuf);
+       process_mac(valbuf, page2, CONFIG_PIGGY_MAC_ADRESS_OFFSET, true);
        setenv((char *)"eth1addr", (char *)valbuf);
 #endif