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authorStefan Roese <sr@denx.de>2009-03-19 15:34:56 +0100
committerWolfgang Denk <wd@denx.de>2009-03-20 22:39:15 +0100
commitb1b4e89a0f3b75854c39a62cae41bad56d210adf (patch)
tree460e7663f9d619596f29768e7296872e6dcf3001 /include/asm-ppc
parent68d7d65100e84df00bca971c114092731b441090 (diff)
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Add LZO decompressor support
This patch adds LZO decompression support to U-Boot. It is needed for the upcoming UBIFS support, since UBIFS uses LZO as default compressor/ decompressor. Since we only support read-only in UBIFS, only the decompressor is needed. All this is copied with minor changes from the current Linux kernel version (2.6.28-rc8). This patch only implements this LZO decompressor support for PPC. Other platforms using UBIFS will have to add the required "include/asm/unaligned.h" as well. It should be fairly easy to copy this from the Linux source tree as I have done it for PPC in this patch. Signed-off-by: Stefan Roese <sr@denx.de>
Diffstat (limited to 'include/asm-ppc')
-rw-r--r--include/asm-ppc/unaligned.h16
1 files changed, 16 insertions, 0 deletions
diff --git a/include/asm-ppc/unaligned.h b/include/asm-ppc/unaligned.h
new file mode 100644
index 0000000..5f1b1e3
--- /dev/null
+++ b/include/asm-ppc/unaligned.h
@@ -0,0 +1,16 @@
+#ifndef _ASM_POWERPC_UNALIGNED_H
+#define _ASM_POWERPC_UNALIGNED_H
+
+#ifdef __KERNEL__
+
+/*
+ * The PowerPC can do unaligned accesses itself in big endian mode.
+ */
+#include <linux/unaligned/access_ok.h>
+#include <linux/unaligned/generic.h>
+
+#define get_unaligned __get_unaligned_be
+#define put_unaligned __put_unaligned_be
+
+#endif /* __KERNEL__ */
+#endif /* _ASM_POWERPC_UNALIGNED_H */