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, 51 insertions, 0 deletions

diff --git a/include/asm-blackfin/cplb.h b/include/asm-blackfin/cplb.h
new file mode 100644
index 000000000000..e0dd56bfa4c7
--- /dev/null
+++ b/include/asm-blackfin/cplb.h
@@ -0,0 +1,51 @@
+/************************************************************************
+ *
+ * cplb.h
+ *
+ * (c) Copyright 2002-2003 Analog Devices, Inc.  All rights reserved.
+ *
+ ************************************************************************/
+
+/* Defines necessary for cplb initialisation routines. */
+
+#ifndef _CPLB_H
+#define _CPLB_H
+
+# include <asm/blackfin.h>
+
+#define CPLB_ENABLE_ICACHE_P    0
+#define CPLB_ENABLE_DCACHE_P    1
+#define CPLB_ENABLE_DCACHE2_P   2
+#define CPLB_ENABLE_CPLBS_P     3       /* Deprecated! */
+#define CPLB_ENABLE_ICPLBS_P    4
+#define CPLB_ENABLE_DCPLBS_P    5
+
+#define CPLB_ENABLE_ICACHE      (1<<CPLB_ENABLE_ICACHE_P)
+#define CPLB_ENABLE_DCACHE      (1<<CPLB_ENABLE_DCACHE_P)
+#define CPLB_ENABLE_DCACHE2     (1<<CPLB_ENABLE_DCACHE2_P)
+#define CPLB_ENABLE_CPLBS       (1<<CPLB_ENABLE_CPLBS_P)
+#define CPLB_ENABLE_ICPLBS      (1<<CPLB_ENABLE_ICPLBS_P)
+#define CPLB_ENABLE_DCPLBS      (1<<CPLB_ENABLE_DCPLBS_P)
+#define CPLB_ENABLE_ANY_CPLBS   CPLB_ENABLE_CPLBS | \
+                                CPLB_ENABLE_ICPLBS | \
+                                CPLB_ENABLE_DCPLBS
+
+#define CPLB_RELOADED           0x0000
+#define CPLB_NO_UNLOCKED        0x0001
+#define CPLB_NO_ADDR_MATCH      0x0002
+#define CPLB_PROT_VIOL          0x0003
+#define CPLB_UNKNOWN_ERR        0x0004
+
+#define CPLB_DEF_CACHE          CPLB_L1_CHBL | CPLB_WT
+#define CPLB_CACHE_ENABLED      CPLB_L1_CHBL | CPLB_DIRTY
+
+#define CPLB_ALL_ACCESS CPLB_SUPV_WR | CPLB_USER_RD | CPLB_USER_WR
+
+#define CPLB_I_PAGE_MGMT        CPLB_LOCK | CPLB_VALID
+#define CPLB_D_PAGE_MGMT        CPLB_LOCK | CPLB_ALL_ACCESS | CPLB_VALID
+#define CPLB_DNOCACHE           CPLB_ALL_ACCESS | CPLB_VALID
+#define CPLB_DDOCACHE           CPLB_DNOCACHE | CPLB_DEF_CACHE
+#define CPLB_INOCACHE           CPLB_USER_RD | CPLB_VALID
+#define CPLB_IDOCACHE           CPLB_INOCACHE | CPLB_L1_CHBL
+
+#endif                          /* _CPLB_H */