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authorAngelos Mouzakitis <a.mouzakitis@virtualopensystems.com>2023-10-10 14:33:42 +0000
committerAngelos Mouzakitis <a.mouzakitis@virtualopensystems.com>2023-10-10 14:33:42 +0000
commitaf1a266670d040d2f4083ff309d732d648afba2a (patch)
tree2fc46203448ddcc6f81546d379abfaeb323575e9 /roms/u-boot/tools/gen_eth_addr.c
parente02cda008591317b1625707ff8e115a4841aa889 (diff)
Add submodule dependency filesHEADmaster
Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec
Diffstat (limited to 'roms/u-boot/tools/gen_eth_addr.c')
-rw-r--r--roms/u-boot/tools/gen_eth_addr.c33
1 files changed, 33 insertions, 0 deletions
diff --git a/roms/u-boot/tools/gen_eth_addr.c b/roms/u-boot/tools/gen_eth_addr.c
new file mode 100644
index 000000000..ad36f3f0c
--- /dev/null
+++ b/roms/u-boot/tools/gen_eth_addr.c
@@ -0,0 +1,33 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * (C) Copyright 2001
+ * Murray Jensen <Murray.Jensen@cmst.csiro.au>
+ */
+
+#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() << 8));
+
+ /*
+ * 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);
+}