sniper: Pass serial number through ATAG

Now that the serial number is correctly defined, we can pass it to the kernel
using the (legacy) ATAG method. It will be automatically passed via device-tree
when enabled.

Signed-off-by: Paul Kocialkowski <contact@paulk.fr>
Reviewed-by: Tom Rini <trini@konsulko.com>

board/lge/sniper/sniper.c

@@ -98,6 +98,24 @@ int misc_init_r(void)
 	return 0;
 }
 
+void get_board_serial(struct tag_serialnr *serialnr)
+{
+	char *serial_string;
+	unsigned long long serial;
+
+	serial_string = getenv("serial#");
+
+	if (serial_string) {
+		serial = simple_strtoull(serial_string, NULL, 16);
+
+		serialnr->high = (unsigned int) (serial >> 32);
+		serialnr->low = (unsigned int) (serial & 0xffffffff);
+	} else {
+		serialnr->high = 0;
+		serialnr->low = 0;
+	}
+}
+
 void set_muxconf_regs(void)
 {
 	MUX_SNIPER();

include/configs/sniper.h

@@ -240,6 +240,7 @@
 #define CONFIG_CMDLINE_TAG
 #define CONFIG_INITRD_TAG
 #define CONFIG_REVISION_TAG
+#define CONFIG_SERIAL_TAG
 
 /*
  * Boot