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>

103 files changed, 23594 insertions, 0 deletions

diff --git a/arch/blackfin/Kconfig b/arch/blackfin/Kconfig
new file mode 100644
index 00000000000..1a493050932
--- /dev/null
+++ b/arch/blackfin/Kconfig
@@ -0,0 +1,989 @@
+#
+# For a description of the syntax of this configuration file,
+# see Documentation/kbuild/kconfig-language.txt.
+#
+
+mainmenu "uClinux/Blackfin (w/o MMU) Kernel Configuration"
+
+config MMU
+	bool
+	default n
+
+config FPU
+	bool
+	default n
+
+config RWSEM_GENERIC_SPINLOCK
+	bool
+	default y
+
+config RWSEM_XCHGADD_ALGORITHM
+	bool
+	default n
+
+config BLACKFIN
+	bool
+	default y
+
+config BFIN
+	bool
+	default y
+
+config SEMAPHORE_SLEEPERS
+	bool
+	default y
+
+config GENERIC_FIND_NEXT_BIT
+	bool
+	default y
+
+config GENERIC_HWEIGHT
+	bool
+	default y
+
+config GENERIC_HARDIRQS
+	bool
+	default y
+
+config GENERIC_IRQ_PROBE
+        bool
+	default y
+
+config GENERIC_TIME
+	bool
+	default n
+
+config GENERIC_CALIBRATE_DELAY
+	bool
+	default y
+
+config FORCE_MAX_ZONEORDER
+	int
+	default "14"
+
+config GENERIC_CALIBRATE_DELAY
+	bool
+	default y
+
+config IRQCHIP_DEMUX_GPIO
+	bool
+	default y
+
+source "init/Kconfig"
+source "kernel/Kconfig.preempt"
+
+menu "Blackfin Processor Options"
+
+comment "Processor and Board Settings"
+
+choice
+	prompt "CPU"
+	default BF533
+
+config BF531
+	bool "BF531"
+	help
+	  BF531 Processor Support.
+
+config BF532
+	bool "BF532"
+	help
+	  BF532 Processor Support.
+
+config BF533
+	bool "BF533"
+	help
+	  BF533 Processor Support.
+
+config BF534
+	bool "BF534"
+	help
+	  BF534 Processor Support.
+
+config BF536
+	bool "BF536"
+	help
+	  BF536 Processor Support.
+
+config BF537
+	bool "BF537"
+	help
+	  BF537 Processor Support.
+
+config BF561
+	bool "BF561"
+	help
+	  Not Supported Yet - Work in progress - BF561 Processor Support.
+
+endchoice
+
+choice
+	prompt "Silicon Rev"
+	default BF_REV_0_2 if BF537
+	default BF_REV_0_3 if BF533
+
+config BF_REV_0_2
+	bool "0.2"
+	depends on (BF537 || BF536 || BF534)
+
+config BF_REV_0_3
+	bool "0.3"
+	depends on (BF561 || BF537 || BF536 || BF534 || BF533 || BF532 || BF531)
+
+config BF_REV_0_4
+	bool "0.4"
+	depends on (BF561 || BF533 || BF532 || BF531)
+
+config BF_REV_0_5
+	bool "0.5"
+	depends on (BF561 || BF533 || BF532 || BF531)
+
+endchoice
+
+config BFIN_DUAL_CORE
+	bool
+	depends on (BF561)
+	default y
+
+config BFIN_SINGLE_CORE
+	bool
+	depends on !BFIN_DUAL_CORE
+	default y
+
+choice
+	prompt "System type"
+	default BFIN533_STAMP
+	help
+	  Do NOT change the board here.  Please use the top level
+	  configuration to ensure that all the other settings are
+	  correct.
+
+config BFIN533_EZKIT
+	bool "BF533-EZKIT"
+	depends on (BF533 || BF532 || BF531)
+	help
+	  BF533-EZKIT-LITE board Support.
+
+config  BFIN533_STAMP
+	bool "BF533-STAMP"
+	depends on (BF533 || BF532 || BF531)
+	help
+	  BF533-STAMP board Support.
+
+config BFIN537_STAMP
+	bool "BF537-STAMP"
+	depends on (BF537 || BF536 || BF534)
+	help
+	  BF537-STAMP board Support.
+
+config BFIN533_BLUETECHNIX_CM
+	bool "Bluetechnix CM-BF533"
+	depends on (BF533)
+	help
+	  CM-BF533 support for EVAL- and DEV-Board.
+
+config BFIN537_BLUETECHNIX_CM
+	bool "Bluetechnix CM-BF537"
+	depends on (BF537)
+	help
+	  CM-BF537 support for EVAL- and DEV-Board.
+
+config BFIN561_BLUETECHNIX_CM
+	bool "BF561-CM"
+	depends on (BF561)
+	help
+	  CM-BF561 support for EVAL- and DEV-Board.
+
+config BFIN561_EZKIT
+	bool "BF561-EZKIT"
+	depends on (BF561)
+	help
+	  BF561-EZKIT-LITE board Support.
+
+config PNAV10
+	bool "PNAV 1.0 board"
+	depends on (BF537)
+	help
+	  PNAV 1.0 board Support.
+
+config GENERIC_BOARD
+	bool "Custom"
+	depends on (BF537 || BF536 \
+		|| BF534 || BF561 || BF535 || BF533 || BF532 || BF531)
+	help
+	  GENERIC or Custom board Support.
+
+endchoice
+
+config MEM_GENERIC_BOARD
+	bool
+	depends on GENERIC_BOARD
+	default y
+
+config MEM_MT48LC64M4A2FB_7E
+	bool
+	depends on (BFIN533_STAMP)
+	default y
+
+config MEM_MT48LC16M16A2TG_75
+	bool
+	depends on (BFIN533_EZKIT || BFIN561_EZKIT \
+		|| BFIN533_BLUETECHNIX_CM || BFIN537_BLUETECHNIX_CM)
+	default y
+
+config MEM_MT48LC32M8A2_75
+	bool
+	depends on (BFIN537_STAMP || PNAV10)
+	default y
+
+config MEM_MT48LC8M32B2B5_7
+	bool
+	depends on (BFIN561_BLUETECHNIX_CM)
+	default y
+
+config BFIN_SHARED_FLASH_ENET
+	bool
+	depends on (BFIN533_STAMP)
+	default y
+
+source "arch/blackfin/mach-bf533/Kconfig"
+source "arch/blackfin/mach-bf561/Kconfig"
+source "arch/blackfin/mach-bf537/Kconfig"
+
+menu "Board customizations"
+
+config CMDLINE_BOOL
+	bool "Default bootloader kernel arguments"
+
+config CMDLINE
+	string "Initial kernel command string"
+	depends on CMDLINE_BOOL
+	default "console=ttyBF0,57600"
+	help
+	  If you don't have a boot loader capable of passing a command line string
+	  to the kernel, you may specify one here. As a minimum, you should specify
+	  the memory size and the root device (e.g., mem=8M, root=/dev/nfs).
+
+comment "Board Setup"
+
+config CLKIN_HZ
+	int "Crystal Frequency in Hz"
+	default "11059200" if BFIN533_STAMP
+	default "27000000" if BFIN533_EZKIT
+	default "25000000" if BFIN537_STAMP
+	default "30000000" if BFIN561_EZKIT
+	default "24576000" if PNAV10
+	help
+	  The frequency of CLKIN crystal oscillator on the board in Hz.
+
+config MEM_SIZE
+	int "SDRAM Memory Size in MBytes"
+	default  32 if BFIN533_EZKIT
+	default  64 if BFIN537_STAMP
+	default  64 if BFIN561_EZKIT
+	default 128 if BFIN533_STAMP
+	default  64 if PNAV10
+
+config MEM_ADD_WIDTH
+	int "SDRAM Memory Address Width"
+	default  9 if BFIN533_EZKIT
+	default  9 if BFIN561_EZKIT
+	default 10 if BFIN537_STAMP
+	default 11 if BFIN533_STAMP
+	default 10 if PNAV10
+
+config ENET_FLASH_PIN
+	int "PF port/pin used for flash and ethernet sha