Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / u-boot / lib / crc8.c

diff --git a/qemu/roms/u-boot/lib/crc8.c b/qemu/roms/u-boot/lib/crc8.c
new file mode 100644 (file)
index 0000000..8b68a29
--- /dev/null
+++ b/qemu/roms/u-boot/lib/crc8.c
@@ -0,0 +1,25 @@
+/*
+ * Copyright (c) 2013 Google, Inc
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
+ */
+
+#include "linux/crc8.h"
+
+unsigned int crc8(const unsigned char *vptr, int len)
+{
+       const unsigned char *data = vptr;
+       unsigned int crc = 0;
+       int i, j;
+
+       for (j = len; j; j--, data++) {
+               crc ^= (*data << 8);
+               for (i = 8; i; i--) {
+                       if (crc & 0x8000)
+                               crc ^= (0x1070 << 3);
+                       crc <<= 1;
+               }
+       }
+
+       return (crc >> 8) & 0xff;
+}