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, 175 insertions, 0 deletions

diff --git a/include/asm-blackfin/mach-bf533/anomaly.h b/include/asm-blackfin/mach-bf533/anomaly.h
new file mode 100644
index 000000000000..a84d3909345e
--- /dev/null
+++ b/include/asm-blackfin/mach-bf533/anomaly.h
@@ -0,0 +1,175 @@
+/*
+ * File:         include/asm-blackfin/mach-bf533/anomaly.h
+ * Based on:
+ * Author:
+ *
+ * Created:
+ * Description:
+ *
+ * Rev:
+ *
+ * Modified:
+ *
+ * Bugs:         Enter bugs at http://blackfin.uclinux.org/
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; see the file COPYING.
+ * If not, write to the Free Software Foundation,
+ * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+/* This file shoule be up to date with:
+ *  - Revision U, May 17, 2006; ADSP-BF533 Blackfin Processor Anomaly List
+ *  - Revision Y, May 17, 2006; ADSP-BF532 Blackfin Processor Anomaly List
+ *  - Revision T, May 17, 2006; ADSP-BF531 Blackfin Processor Anomaly List
+ */
+
+#ifndef _MACH_ANOMALY_H_
+#define _MACH_ANOMALY_H_
+
+/* We do not support 0.1 or 0.2 silicon - sorry */
+#if (defined(CONFIG_BF_REV_0_1) || defined(CONFIG_BF_REV_0_2))
+#error Kernel will not work on BF533 Version 0.1 or 0.2
+#endif
+
+/* Issues that are common to 0.5, 0.4, and 0.3 silicon */
+#if  (defined(CONFIG_BF_REV_0_5) || defined(CONFIG_BF_REV_0_4) || defined(CONFIG_BF_REV_0_3))
+#define ANOMALY_05000074 /* A multi issue instruction with dsp32shiftimm in
+                            slot1 and store of a P register in slot 2 is not
+                            supported */
+#define ANOMALY_05000105 /* Watchpoint Status Register (WPSTAT) bits are set on
+                            every corresponding match */
+#define ANOMALY_05000119 /* DMA_RUN bit is not valid after a Peripheral Receive
+                            Channel DMA stops */
+#define ANOMALY_05000122 /* Rx.H can not be used to access 16-bit System MMR
+                            registers. */
+#define ANOMALY_05000166 /* PPI Data Lengths Between 8 and 16 do not zero out
+                            upper bits*/
+#define ANOMALY_05000167 /* Turning Serial Ports on With External Frame Syncs */
+#define ANOMALY_05000180 /* PPI_DELAY not functional in PPI modes with 0 frame
+                            syncs */
+#define ANOMALY_05000208 /* VSTAT status bit in PLL_STAT register is not
+                            functional */
+#define ANOMALY_05000219 /* NMI event at boot time results in unpredictable
+                            state */
+#define ANOMALY_05000229 /* SPI Slave Boot Mode modifies registers */
+#define ANOMALY_05000272 /* Certain data cache write through modes fail for
+                            VDDint <=0.9V */
+#define ANOMALY_05000273 /* Writes to Synchronous SDRAM memory may be lost */
+#define ANOMALY_05000277 /* Writes to a flag data register one SCLK cycle after
+                            an edge is detected may clear interrupt */
+#define ANOMALY_05000278 /* Disabling Peripherals with DMA running may cause
+                            DMA system instability */
+#define ANOMALY_05000281 /* False Hardware Error Exception when ISR context is
+                            not restored */
+#define ANOMALY_05000282 /* Memory DMA corruption with 32-bit data and traffic
+                            control */
+#define ANOMALY_05000283 /* A system MMR write is stalled indefinitely when
+                            killed in a particular stage*/
+#define ANOMALY_05000312 /* Errors when SSYNC, CSYNC, or loads to LT, LB and LC
+                            registers are interrupted */
+#define ANOMALY_05000311 /* Erroneous flag pin operations under specific sequences*/
+
+#endif
+
+/* These issues only occur on 0.3 or 0.4 BF533 */
+#if (defined(CONFIG_BF_REV_0_4) || defined(CONFIG_BF_REV_0_3))
+#define ANOMALY_05000099 /* UART Line Status Register (UART_LSR) bits are not
+                            updated at the same time. */
+#define ANOMALY_05000158 /* Boot fails when data cache enabled: Data from a Data
+                            Cache Fill can be corrupted after or during
+                            Instruction DMA if certain core stalls exist */
+#define ANOMALY_05000179 /* PPI_COUNT cannot be programmed to 0 in General
+                            Purpose TX or RX modes */
+#define ANOMALY_05000198 /* Failing SYSTEM MMR accesses when stalled by
+                            preceding memory read */
+#define ANOMALY_05000200 /* SPORT TFS and DT are incorrectly driven during
+                            inactive channels in certain conditions */
+#define ANOMALY_05000202 /* Possible infinite stall with specific dual dag
+                            situation */
+#define ANOMALY_05000215 /* UART TX Interrupt masked erroneously */
+#define ANOMALY_05000225 /* Incorrect pulse-width of UART start-bit */
+#define ANOMALY_05000227 /* Scratchpad memory bank reads may return incorrect
+                            data*/
+#define ANOMALY_05000230 /* UART Receiver is less robust against Baudrate
+                            Differences in certain Conditions */
+#define ANOMALY_05000231 /* UART STB bit incorrectly affects receiver setting */
+#define ANOMALY_05000242 /* DF bit in PLL_CTL register does not respond to
+                            hardware reset */
+#define ANOMALY_05000244 /* With instruction cache enabled, a CSYNC or SSYNC or
+                            IDLE around a Change of Control causes
+                            unpredictable results */
+#define ANOMALY_05000245 /* Spurious Hardware Error from an access in the
+                            shadow of a conditional branch */
+#define ANOMALY_05000246 /* Data CPLB's should prevent spurious hardware
+                            errors */
+#define ANOMALY_05000253 /* Maximum external clock speed for Timers */
+#define ANOMALY_05000255 /* Entering Hibernate Mode with RTC Seconds event
+                            interrupt not functional */
+#define ANOMALY_05000257 /* An interrupt or exception during short Hardware
+                            loops may cause the instruction fetch unit to
+                            malfunction */
+#define ANOMALY_05000258 /* Instruction Cache is corrupted when bit 9 and 12 of
+                            the ICPLB Data registers differ */
+#define ANOMALY_05000260 /* ICPLB_STATUS MMR register may be corrupted */
+#define ANOMALY_05000261 /* DCPLB_FAULT_ADDR MMR register may be corrupted */
+#define ANOMALY_05000262 /* Stores to data cache may be lost */
+#define ANOMALY_05000263 /* Hardware loop corrupted when taking an ICPLB exception */
+#define ANOMALY_05000264 /* A Sync instruction (CSYNC, SSYNC) or an IDLE
+                            instruction will cause an infinite stall in the
+                            second to last instruction in a hardware loop */
+#define ANOMALY_05000265 /* Sensitivity to noise with slow input edge rates on
+                            SPORT external receive and transmit clocks. */
+#define ANOMALY_05000269 /* High I/O activity causes the output voltage of the
+                            internal voltage regulator (VDDint) to increase. */
+#define ANOMALY_05000270 /* High I/O activity causes the output voltage of the
+                            internal voltage regulator (VDDint) to decrease */
+#endif
+
+/* These issues are only on 0.4 silicon */
+#if (defined(CONFIG_BF_REV_0_4))
+#define ANOMALY_05000234 /* Incorrect Revision Number in DSPID Register */
+#define ANOMALY_05000250 /* Incorrect Bit-Shift of Data Word in Multichannel
+                            (TDM) */
+#endif
+
+/* These issues are only on 0.3 silicon */
+#if defined(CONFIG_BF_REV_0_3)
+#define ANOMALY_05000183 /* Timer Pin limitations for PPI TX Modes with
+                            External Frame Syncs */
+#define ANOMALY_05000189 /* False Protection Exceptions caused by Speculative
+                            Instruction or Data Fetches, or by Fetches at the
+                            boundary of reserved memory space */
+#define ANOMALY_05000193 /* False Flag Pin Interrupts on Edge Sensitive Inputs
+                            when polarity setting is changed */
+#define ANOMALY_05000194 /* Sport Restarting in specific modes may cause data
+                            corruption */
+#define ANOMALY_05000199 /* DMA current address shows wrong value during carry
+                            fix */
+#define ANOMALY_05000201 /* Receive frame sync not ignored during active
+                            frames in sport MCM */
+#define ANOMALY_05000203 /* Specific sequence that can cause DMA error or DMA
+                            stopping */
+#if defined(CONFIG_BF533)
+#define ANOMALY_05000204 /* Incorrect data read with write-through cache and
+                            allocate cache lines on reads only mode */
+#endif /* CONFIG_BF533 */
+#define ANOMALY_05000207 /* Recovery from "brown-out" condition */
+#define ANOMALY_05000209 /* Speed-Path in computational unit affects certain
+                            instructions */
+#define ANOMALY_05000233 /* PPI_FS3 is not driven in 2 or 3 internal Frame
+                            Sync Transmit Mode */
+#define ANOMALY_05000271 /* Spontaneous reset of Internal Voltage Regulator */
+#endif
+
+#endif /*  _MACH_ANOMALY_H_ */