arch: remove blackfin port

The Analog Devices Blackfin port was added in 2007 and was rather
active for a while, but all work on it has come to a standstill
over time, as Analog have changed their product line-up.

Aaron Wu confirmed that the architecture port is no longer relevant,
and multiple people suggested removing blackfin independently because
of some of its oddities like a non-working SMP port, and the amount of
duplication between the chip variants, which cause extra work when
doing cross-architecture changes.

Link: https://docs.blackfin.uclinux.org/
Acked-by: Aaron Wu <Aaron.Wu@analog.com>
Acked-by: Bryan Wu <cooloney@gmail.com>
Cc: Steven Miao <realmz6@gmail.com>
Cc: Mike Frysinger <vapier@chromium.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

95 files changed, 0 insertions, 12043 deletions

diff --git a/arch/blackfin/include/asm/Kbuild b/arch/blackfin/include/asm/Kbuild
deleted file mode 100644
index fe736973630f..000000000000
--- a/arch/blackfin/include/asm/Kbuild
+++ /dev/null
@@ -1,28 +0,0 @@
-generic-y += bugs.h
-generic-y += current.h
-generic-y += device.h
-generic-y += div64.h
-generic-y += emergency-restart.h
-generic-y += extable.h
-generic-y += fb.h
-generic-y += futex.h
-generic-y += hw_irq.h
-generic-y += irq_regs.h
-generic-y += irq_work.h
-generic-y += kdebug.h
-generic-y += kmap_types.h
-generic-y += kprobes.h
-generic-y += local.h
-generic-y += local64.h
-generic-y += mcs_spinlock.h
-generic-y += mm-arch-hooks.h
-generic-y += percpu.h
-generic-y += pgalloc.h
-generic-y += preempt.h
-generic-y += serial.h
-generic-y += topology.h
-generic-y += trace_clock.h
-generic-y += unaligned.h
-generic-y += user.h
-generic-y += word-at-a-time.h
-generic-y += xor.h
diff --git a/arch/blackfin/include/asm/asm-offsets.h b/arch/blackfin/include/asm/asm-offsets.h
deleted file mode 100644
index d370ee36a182..000000000000
--- a/arch/blackfin/include/asm/asm-offsets.h
+++ /dev/null
@@ -1 +0,0 @@
-#include <generated/asm-offsets.h>
diff --git a/arch/blackfin/include/asm/atomic.h b/arch/blackfin/include/asm/atomic.h
deleted file mode 100644
index 63c7deceeeb6..000000000000
--- a/arch/blackfin/include/asm/atomic.h
+++ /dev/null
@@ -1,47 +0,0 @@
-/*
- * Copyright 2004-2011 Analog Devices Inc.
- *
- * Licensed under the GPL-2 or later.
- */
-
-#ifndef __ARCH_BLACKFIN_ATOMIC__
-#define __ARCH_BLACKFIN_ATOMIC__
-
-#include <asm/cmpxchg.h>
-
-#ifdef CONFIG_SMP
-
-#include <asm/barrier.h>
-#include <linux/linkage.h>
-#include <linux/types.h>
-
-asmlinkage int __raw_uncached_fetch_asm(const volatile int *ptr);
-asmlinkage int __raw_atomic_add_asm(volatile int *ptr, int value);
-asmlinkage int __raw_atomic_xadd_asm(volatile int *ptr, int value);
-
-asmlinkage int __raw_atomic_and_asm(volatile int *ptr, int value);
-asmlinkage int __raw_atomic_or_asm(volatile int *ptr, int value);
-asmlinkage int __raw_atomic_xor_asm(volatile int *ptr, int value);
-asmlinkage int __raw_atomic_test_asm(const volatile int *ptr, int value);
-
-#define atomic_read(v) __raw_uncached_fetch_asm(&(v)->counter)
-
-#define atomic_add_return(i, v) __raw_atomic_add_asm(&(v)->counter, i)
-#define atomic_sub_return(i, v) __raw_atomic_add_asm(&(v)->counter, -(i))
-
-#define atomic_fetch_add(i, v) __raw_atomic_xadd_asm(&(v)->counter, i)
-#define atomic_fetch_sub(i, v) __raw_atomic_xadd_asm(&(v)->counter, -(i))
-
-#define atomic_or(i, v)  (void)__raw_atomic_or_asm(&(v)->counter, i)
-#define atomic_and(i, v) (void)__raw_atomic_and_asm(&(v)->counter, i)
-#define atomic_xor(i, v) (void)__raw_atomic_xor_asm(&(v)->counter, i)
-
-#define atomic_fetch_or(i, v)  __raw_atomic_or_asm(&(v)->counter, i)
-#define atomic_fetch_and(i, v) __raw_atomic_and_asm(&(v)->counter, i)
-#define atomic_fetch_xor(i, v) __raw_atomic_xor_asm(&(v)->counter, i)
-
-#endif
-
-#include <asm-generic/atomic.h>
-
-#endif
diff --git a/arch/blackfin/include/asm/barrier.h b/arch/blackfin/include/asm/barrier.h
deleted file mode 100644
index 7cca51cae5ff..000000000000
--- a/arch/blackfin/include/asm/barrier.h
+++ /dev/null
@@ -1,86 +0,0 @@
-/*
- * Copyright 2004-2009 Analog Devices Inc.
- *               Tony Kou (tonyko@lineo.ca)
- *
- * Licensed under the GPL-2 or later
- */
-
-#ifndef _BLACKFIN_BARRIER_H
-#define _BLACKFIN_BARRIER_H
-
-#include <asm/cache.h>
-
-#define nop()  __asm__ __volatile__ ("nop;\n\t" : : )
-
-/*
- * Force strict CPU ordering.
- */
-#ifdef CONFIG_SMP
-
-#ifdef __ARCH_SYNC_CORE_DCACHE
-/* Force Core data cache coherence */
-# define mb()	do { barrier(); smp_check_barrier(); smp_mark_barrier(); } while (0)
-# define rmb()	do { barrier(); smp_check_barrier(); } while (0)
-# define wmb()	do { barrier(); smp_mark_barrier(); } while (0)
-/*
- * read_barrier_depends - Flush all pending reads that subsequents reads
- * depend on.
- *
- * No data-dependent reads from memory-like regions are ever reordered
- * over this barrier.  All reads preceding this primitive are guaranteed
- * to access memory (but not necessarily other CPUs' caches) before any
- * reads following this primitive that depend on the data return by
- * any of the preceding reads.  This primitive is much lighter weight than
- * rmb() on most CPUs, and is never heavier weight than is
- * rmb().
- *
- * These ordering constraints are respected by both the local CPU
- * and the compiler.
- *
- * Ordering is not guaranteed by anything other than these primitives,
- * not even by data dependencies.  See the documentation for
- * memory_barrier() for examples and URLs to more information.
- *
- * For example, the following code would force ordering (the initial
- * value of "a" is zero, "b" is one, and "p" is "&a"):
- *
- * <programlisting>
- *	CPU 0				CPU 1
- *
- *	b = 2;
- *	memory_barrier();
- *	p = &b;				q = p;
- *					read_barrier_depends();
- *					d = *q;
- * </programlisting>
- *
- * because the read of "*q" depends on the read of "p" and these
- * two reads are separated by a read_barrier_depends().  However,
- * the following code, with the same initial values for "a" and "b":
- *
- * <programlisting>
- *	CPU 0				CPU 1
- *
- *	a = 2;
- *	memory_barrier();
- *	b = 3;				y = b;
- *					read_barrier_depends();
- *					x = a;
- * </programlisting>
- *
- * does not enforce ordering, since there is no data dependency between
- * the read of "a" and the read of "b".  Therefore, on some CPUs, such
- * as Alpha, "y" could be set to 3 and "x" to 0.  Use rmb()
- * in cases like this where there are no data dependencies.
- */
-# define read_barrier_depends()	do { barrier(); smp_check_barrier(); } while (0)
-#endif
-
-#endif /* !CONFIG_SMP */
-
-#define __smp_mb__before_atomic()	barrier()
-#define __smp_mb__after_atomic()	barrier()
-
-#include <asm-generic/barrier.h>
-
-#endif /* _BLACKFIN_BARRIER_H */
diff --git a/arch/blackfin/include/asm/bfin-global.h b/arch/blackfin/include/asm/bfin-global.h
deleted file mode 100644
index dc47d79287f9..000000000000
--- a/arch/blackfin/include/asm/bfin-global.h
+++ /dev/null
@@ -1,95 +0,0 @@
-/*
- * Global extern defines for blackfin
- *
- * Copyright 2006-2009 Analog Devices Inc.
- *
- * Licensed under the GPL-2 or later.
- */
-
-#ifndef _BFIN_GLOBAL_H_
-#define _BFIN_GLOBAL_H_
-
-#ifndef __ASSEMBLY__
-
-#include <linux/linkage.h>
-#include <linux/types.h>
-
-#if defined(CONFIG_DMA_UNCACHED_32M)
-# define DMA_UNCACHED_REGION (32 * 1024 * 1024)
-#elif defined(CONFIG_DMA_UNCACHED_16M)
-# define DMA_UNCACHED_REGION (16 * 1024 * 1024)
-#elif defined(CONFIG_DMA_UNCACHED_8M)
-# define DMA_UNCACHED_REGION (8 * 1024 * 1024)
-#elif defined(CONFIG_DMA_UNCACHED_4M)
-# define DMA_UNCACHED_REGION (4 * 1024 * 1024)
-#elif defined(CONFIG_DMA_UNCACHED_2M)
-# define DMA_UNCACHED_REGION (2 * 1024 * 1024)
-#elif defined(CONFIG_DMA_UNCACHED_1M)
-# define DMA_UNCACHED_REGION (1024 * 1024)
-#elif defined(CONFIG_DMA_UNCACHED_512K)
-# define DMA_UNCACHED_REGION (512 * 1024)
-#elif defined(CONFIG_DMA_UNCACHE