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, 55 insertions, 0 deletions

diff --git a/include/asm-blackfin/sigcontext.h b/include/asm-blackfin/sigcontext.h
new file mode 100644
index 000000000000..ce00b03c2775
--- /dev/null
+++ b/include/asm-blackfin/sigcontext.h
@@ -0,0 +1,55 @@
+#ifndef _ASM_BLACKFIN_SIGCONTEXT_H
+#define _ASM_BLACKFIN_SIGCONTEXT_H
+
+/* Add new entries at the end of the structure only.  */
+struct sigcontext {
+        unsigned long sc_r0;
+        unsigned long sc_r1;
+        unsigned long sc_r2;
+        unsigned long sc_r3;
+        unsigned long sc_r4;
+        unsigned long sc_r5;
+        unsigned long sc_r6;
+        unsigned long sc_r7;
+        unsigned long sc_p0;
+        unsigned long sc_p1;
+        unsigned long sc_p2;
+        unsigned long sc_p3;
+        unsigned long sc_p4;
+        unsigned long sc_p5;
+        unsigned long sc_usp;
+        unsigned long sc_a0w;
+        unsigned long sc_a1w;
+        unsigned long sc_a0x;
+        unsigned long sc_a1x;
+        unsigned long sc_astat;
+        unsigned long sc_rets;
+        unsigned long sc_pc;
+        unsigned long sc_retx;
+        unsigned long sc_fp;
+        unsigned long sc_i0;
+        unsigned long sc_i1;
+        unsigned long sc_i2;
+        unsigned long sc_i3;
+        unsigned long sc_m0;
+        unsigned long sc_m1;
+        unsigned long sc_m2;
+        unsigned long sc_m3;
+        unsigned long sc_l0;
+        unsigned long sc_l1;
+        unsigned long sc_l2;
+        unsigned long sc_l3;
+        unsigned long sc_b0;
+        unsigned long sc_b1;
+        unsigned long sc_b2;
+        unsigned long sc_b3;
+        unsigned long sc_lc0;
+        unsigned long sc_lc1;
+        unsigned long sc_lt0;
+        unsigned long sc_lt1;
+        unsigned long sc_lb0;
+        unsigned long sc_lb1;
+        unsigned long sc_seqstat;
+};
+
+#endif