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, 45 insertions, 0 deletions

diff --git a/include/asm-blackfin/mman.h b/include/asm-blackfin/mman.h
new file mode 100644
index 000000000000..4d504f908c0c
--- /dev/null
+++ b/include/asm-blackfin/mman.h
@@ -0,0 +1,45 @@
+#ifndef __BFIN_MMAN_H__
+#define __BFIN_MMAN_H__
+
+#define PROT_READ	0x1	/* page can be read */
+#define PROT_WRITE	0x2	/* page can be written */
+#define PROT_EXEC	0x4	/* page can be executed */
+#define PROT_SEM	0x8	/* page may be used for atomic ops */
+#define PROT_NONE	0x0	/* page can not be accessed */
+#define PROT_GROWSDOWN	0x01000000	/* mprotect flag: extend change to start of growsdown vma */
+#define PROT_GROWSUP	0x02000000	/* mprotect flag: extend change to end of growsup vma */
+
+#define MAP_SHARED	0x01	/* Share changes */
+#define MAP_PRIVATE	0x02	/* Changes are private */
+#define MAP_TYPE	0x0f	/* Mask for type of mapping */
+#define MAP_FIXED	0x10	/* Interpret addr exactly */
+#define MAP_ANONYMOUS	0x20	/* don't use a file */
+
+#define MAP_GROWSDOWN	0x0100	/* stack-like segment */
+#define MAP_DENYWRITE	0x0800	/* ETXTBSY */
+#define MAP_EXECUTABLE	0x1000	/* mark it as an executable */
+#define MAP_LOCKED	0x2000	/* pages are locked */
+#define MAP_NORESERVE	0x4000	/* don't check for reservations */
+#define MAP_POPULATE	0x8000	/* populate (prefault) pagetables */
+#define MAP_NONBLOCK	0x10000	/* do not block on IO */
+#define MAP_UNINITIALIZE 0x4000000  /* For anonymous mmap, memory could
+                                    be uninitialized. */
+
+#define MS_ASYNC	1	/* sync memory asynchronously */
+#define MS_INVALIDATE	2	/* invalidate the caches */
+#define MS_SYNC		4	/* synchronous memory sync */
+
+#define MCL_CURRENT	1	/* lock all current mappings */
+#define MCL_FUTURE	2	/* lock all future mappings */
+
+#define MADV_NORMAL	0x0	/* default page-in behavior */
+#define MADV_RANDOM	0x1	/* page-in minimum required */
+#define MADV_SEQUENTIAL	0x2	/* read-ahead aggressively */
+#define MADV_WILLNEED	0x3	/* pre-fault pages */
+#define MADV_DONTNEED	0x4	/* discard these pages */
+
+/* compatibility flags */
+#define MAP_ANON	MAP_ANONYMOUS
+#define MAP_FILE	0
+
+#endif				/* __BFIN_MMAN_H__ */