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>

1 files changed, 0 insertions, 92 deletions

diff --git a/arch/blackfin/lib/memcmp.S b/arch/blackfin/lib/memcmp.S
deleted file mode 100644
index 2e1c9477f2f7..000000000000
--- a/arch/blackfin/lib/memcmp.S
+++ /dev/null
@@ -1,92 +0,0 @@
-/*
- * Copyright 2004-2009 Analog Devices Inc.
- *
- * Licensed under the Clear BSD license or the GPL-2 (or later)
- */
-
-#include <linux/linkage.h>
-
-/* int memcmp(const void *s1, const void *s2, size_t n);
- * R0 = First Address (s1)
- * R1 = Second Address (s2)
- * R2 = count (n)
- *
- * Favours word aligned data.
- */
-
-.text
-
-.align 2
-
-ENTRY(_memcmp)
-	I1 = P3;
-	P0 = R0;			/* P0 = s1 address */
-	P3 = R1;			/* P3 = s2 Address  */
-	P2 = R2 ;			/* P2 = count */
-	CC = R2 <= 7(IU);
-	IF CC JUMP .Ltoo_small;
-	I0 = R1;			/* s2 */
-	R1 = R1 | R0;		/* OR addresses together */
-	R1 <<= 30;		/* check bottom two bits */
-	CC =  AZ;			/* AZ set if zero. */
-	IF !CC JUMP .Lbytes ;	/* Jump if addrs not aligned. */
-
-	P1 = P2 >> 2;		/* count = n/4 */
-	R3 =  3;
-	R2 = R2 & R3;		/* remainder */
-	P2 = R2;			/* set remainder */
-
-	LSETUP (.Lquad_loop_s, .Lquad_loop_e) LC0=P1;
-.Lquad_loop_s:
-#if ANOMALY_05000202
-	R0 = [P0++];
-	R1 = [I0++];
-#else
-	MNOP || R0 = [P0++] || R1 = [I0++];
-#endif
-	CC = R0 == R1;
-	IF !CC JUMP .Lquad_different;
-.Lquad_loop_e:
-	NOP;
-
-	P3 = I0;			/* s2 */
-.Ltoo_small:
-	CC = P2 == 0;		/* Check zero count*/
-	IF CC JUMP .Lfinished;	/* very unlikely*/
-
-.Lbytes:
-	LSETUP (.Lbyte_loop_s, .Lbyte_loop_e) LC0=P2;
-.Lbyte_loop_s:
-	R1 = B[P3++](Z);	/* *s2 */
-	R0 = B[P0++](Z);	/* *s1 */
-	CC = R0 == R1;
-	IF !CC JUMP .Ldifferent;
-.Lbyte_loop_e:
-	NOP;
-
-.Ldifferent:
-	R0 = R0 - R1;
-	P3 = I1;
-	RTS;
-
-.Lquad_different:
-	/* We've read two quads which don't match.
-	 * Can't just compare them, because we're
-	 * a little-endian machine, so the MSBs of
-	 * the regs occur at later addresses in the
-	 * string.
-	 * Arrange to re-read those two quads again,
-	 * byte-by-byte.
-	 */
-	P0 += -4;		/* back up to the start of the */
-	P3 = I0;		/* quads, and increase the*/
-	P2 += 4;		/* remainder count*/
-	P3 += -4;
-	JUMP .Lbytes;
-
-.Lfinished:
-	R0 = 0;
-	P3 = I1;
-	RTS;
-
-ENDPROC(_memcmp)