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authorKyungmin Park <kyungmin.park@samsung.com>2008-11-19 16:32:36 +0100
committerStefan Roese <sr@denx.de>2008-11-19 20:34:39 +0100
commit7e6ee7ad27de5216db1baef76f38c3429c8f4a2a (patch)
treefe2108d4ddfea1d8054eefe57740b68036f70644 /include/linux/crc32.h
parentc91a719daa331b5856109313371e4ece5ec06d96 (diff)
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UBI: Add basic UBI support to U-Boot (Part 6/8)
This patch adds basic UBI (Unsorted Block Image) support to U-Boot. It's based on the Linux UBI version and basically has a "OS" translation wrapper that defines most Linux specific calls (spin_lock() etc.) into no-ops. Some source code parts have been uncommented by "#ifdef UBI_LINUX". This makes it easier to compare this version with the Linux version and simplifies future UBI ports/bug-fixes from the Linux version. Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Stefan Roese <sr@denx.de>
Diffstat (limited to 'include/linux/crc32.h')
-rw-r--r--include/linux/crc32.h27
1 files changed, 27 insertions, 0 deletions
diff --git a/include/linux/crc32.h b/include/linux/crc32.h
new file mode 100644
index 0000000..e133157
--- /dev/null
+++ b/include/linux/crc32.h
@@ -0,0 +1,27 @@
+/*
+ * crc32.h
+ * See linux/lib/crc32.c for license and changes
+ */
+#ifndef _LINUX_CRC32_H
+#define _LINUX_CRC32_H
+
+#include <linux/types.h>
+//#include <linux/bitrev.h>
+
+extern u32 crc32_le(u32 crc, unsigned char const *p, size_t len);
+//extern u32 crc32_be(u32 crc, unsigned char const *p, size_t len);
+
+#define crc32(seed, data, length) crc32_le(seed, (unsigned char const *)data, length)
+
+/*
+ * Helpers for hash table generation of ethernet nics:
+ *
+ * Ethernet sends the least significant bit of a byte first, thus crc32_le
+ * is used. The output of crc32_le is bit reversed [most significant bit
+ * is in bit nr 0], thus it must be reversed before use. Except for
+ * nics that bit swap the result internally...
+ */
+//#define ether_crc(length, data) bitrev32(crc32_le(~0, data, length))
+//#define ether_crc_le(length, data) crc32_le(~0, data, length)
+
+#endif /* _LINUX_CRC32_H */