blackfin architecture

This adds support for the Analog Devices Blackfin processor architecture, and
currently supports the BF533, BF532, BF531, BF537, BF536, BF534, and BF561
(Dual Core) devices, with a variety of development platforms including those
avaliable from Analog Devices (BF533-EZKit, BF533-STAMP, BF537-STAMP,
BF561-EZKIT), and Bluetechnix!  Tinyboards.

The Blackfin architecture was jointly developed by Intel and Analog Devices
Inc.  (ADI) as the Micro Signal Architecture (MSA) core and introduced it in
December of 2000.  Since then ADI has put this core into its Blackfin
processor family of devices.  The Blackfin core has the advantages of a clean,
orthogonal,RISC-like microprocessor instruction set.  It combines a dual-MAC
(Multiply/Accumulate), state-of-the-art signal processing engine and
single-instruction, multiple-data (SIMD) multimedia capabilities into a single
instruction-set architecture.

The Blackfin architecture, including the instruction set, is described by the
ADSP-BF53x/BF56x Blackfin Processor Programming Reference
http://blackfin.uclinux.org/gf/download/frsrelease/29/2549/Blackfin_PRM.pdf

The Blackfin processor is already supported by major releases of gcc, and
there are binary and source rpms/tarballs for many architectures at:
http://blackfin.uclinux.org/gf/project/toolchain/frs There is complete
documentation, including "getting started" guides available at:
http://docs.blackfin.uclinux.org/ which provides links to the sources and
patches you will need in order to set up a cross-compiling environment for
bfin-linux-uclibc

This patch, as well as the other patches (toolchain, distribution,
uClibc) are actively supported by Analog Devices Inc, at:
http://blackfin.uclinux.org/

We have tested this on LTP, and our test plan (including pass/fails) can
be found at:
http://docs.blackfin.uclinux.org/doku.php?id=testing_the_linux_kernel

[m.kozlowski@tuxland.pl: balance parenthesis in blackfin header files]
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
Signed-off-by: Mariusz Kozlowski <m.kozlowski@tuxland.pl>
Signed-off-by: Aubrey Li <aubrey.li@analog.com>
Signed-off-by: Jie Zhang <jie.zhang@analog.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 63 insertions, 0 deletions

diff --git a/include/asm-blackfin/stat.h b/include/asm-blackfin/stat.h
new file mode 100644
index 000000000000..d2b6f11ec231
--- /dev/null
+++ b/include/asm-blackfin/stat.h
@@ -0,0 +1,63 @@
+#ifndef _BFIN_STAT_H
+#define _BFIN_STAT_H
+
+struct stat {
+        unsigned short st_dev;
+        unsigned short __pad1;
+        unsigned long st_ino;
+        unsigned short st_mode;
+        unsigned short st_nlink;
+        unsigned short st_uid;
+        unsigned short st_gid;
+        unsigned short st_rdev;
+        unsigned short __pad2;
+        unsigned long st_size;
+        unsigned long st_blksize;
+        unsigned long st_blocks;
+        unsigned long st_atime;
+        unsigned long __unused1;
+        unsigned long st_mtime;
+        unsigned long __unused2;
+        unsigned long st_ctime;
+        unsigned long __unused3;
+        unsigned long __unused4;
+        unsigned long __unused5;
+};
+
+/* This matches struct stat64 in glibc2.1, hence the absolutely
+ * insane amounts of padding around dev_t's.
+ */
+struct stat64 {
+        unsigned long long st_dev;
+        unsigned char __pad1[4];
+
+#define STAT64_HAS_BROKEN_ST_INO        1
+        unsigned long __st_ino;
+
+        unsigned int st_mode;
+        unsigned int st_nlink;
+
+        unsigned long st_uid;
+        unsigned long st_gid;
+
+        unsigned long long st_rdev;
+        unsigned char __pad2[4];
+
+        long long st_size;
+        unsigned long st_blksize;
+
+        long long st_blocks;    /* Number 512-byte blocks allocated. */
+
+        unsigned long st_atime;
+        unsigned long st_atime_nsec;
+
+        unsigned long st_mtime;
+        unsigned long st_mtime_nsec;
+
+        unsigned long st_ctime;
+        unsigned long st_ctime_nsec;
+
+        unsigned long long st_ino;
+};
+
+#endif                          /* _BFIN_STAT_H */