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authorYang Zhang <yang.z.zhang@intel.com>2015-08-28 09:58:54 +0800
committerYang Zhang <yang.z.zhang@intel.com>2015-09-01 12:44:00 +0800
commite44e3482bdb4d0ebde2d8b41830ac2cdb07948fb (patch)
tree66b09f592c55df2878107a468a91d21506104d3f /qemu/roms/u-boot/tools/gen_eth_addr.c
parent9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (diff)
Add qemu 2.4.0
Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5 Signed-off-by: Yang Zhang <yang.z.zhang@intel.com>
Diffstat (limited to 'qemu/roms/u-boot/tools/gen_eth_addr.c')
-rw-r--r--qemu/roms/u-boot/tools/gen_eth_addr.c34
1 files changed, 34 insertions, 0 deletions
diff --git a/qemu/roms/u-boot/tools/gen_eth_addr.c b/qemu/roms/u-boot/tools/gen_eth_addr.c
new file mode 100644
index 000000000..bf9d935ef
--- /dev/null
+++ b/qemu/roms/u-boot/tools/gen_eth_addr.c
@@ -0,0 +1,34 @@
+/*
+ * (C) Copyright 2001
+ * Murray Jensen <Murray.Jensen@cmst.csiro.au>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <time.h>
+
+int
+main(int argc, char *argv[])
+{
+ unsigned long ethaddr_low, ethaddr_high;
+
+ srand(time(0) | getpid());
+
+ /*
+ * setting the 2nd LSB in the most significant byte of
+ * the address makes it a locally administered ethernet
+ * address
+ */
+ ethaddr_high = (rand() & 0xfeff) | 0x0200;
+ ethaddr_low = rand();
+
+ printf("%02lx:%02lx:%02lx:%02lx:%02lx:%02lx\n",
+ ethaddr_high >> 8, ethaddr_high & 0xff,
+ ethaddr_low >> 24, (ethaddr_low >> 16) & 0xff,
+ (ethaddr_low >> 8) & 0xff, ethaddr_low & 0xff);
+
+ return (0);
+}