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, 93 deletions

diff --git a/arch/blackfin/lib/memmove.S b/arch/blackfin/lib/memmove.S
deleted file mode 100644
index e0b78208f1d6..000000000000
--- a/arch/blackfin/lib/memmove.S
+++ /dev/null
@@ -1,93 +0,0 @@
-/*
- * Copyright 2005-2009 Analog Devices Inc.
- *
- * Licensed under the Clear BSD license or the GPL-2 (or later)
- */
-
-#include <linux/linkage.h>
-
-.align 2
-
-/*
- * C Library function MEMMOVE
- * R0 = To Address (leave unchanged to form result)
- * R1 = From Address
- * R2 = count
- * Data may overlap
- */
-
-ENTRY(_memmove)
-	I1 = P3;
-	P0 = R0;                  /* P0 = To address */
-	P3 = R1;                  /* P3 = From Address */
-	P2 = R2;                  /* P2 = count */
-	CC = P2 == 0;             /* Check zero count*/
-	IF CC JUMP .Lfinished;    /* very unlikely */
-
-	CC = R1 < R0 (IU);        /* From < To */
-	IF !CC JUMP .Lno_overlap;
-	R3 = R1 + R2;
-	CC = R0 <= R3 (IU);       /* (From+len) >= To */
-	IF CC JUMP .Loverlap;
-.Lno_overlap:
-	R3 = 11;
-	CC = R2 <= R3;
-	IF CC JUMP .Lbytes;
-	R3 = R1 | R0;             /* OR addresses together */
-	R3 <<= 30;                /* check bottom two bits */
-	CC =  AZ;                 /* AZ set if zero.*/
-	IF !CC JUMP .Lbytes;      /* Jump if addrs not aligned.*/
-
-	I0 = P3;
-	P1 = P2 >> 2;             /* count = n/4 */
-	P1 += -1;
-	R3 =  3;
-	R2 = R2 & R3;             /* remainder */
-	P2 = R2;                  /* set remainder */
-	R1 = [I0++];
-
-	LSETUP (.Lquad_loops, .Lquad_loope) LC0=P1;
-#if ANOMALY_05000202
-.Lquad_loops:
-	[P0++] = R1;
-.Lquad_loope:
-	R1 = [I0++];
-#else
-.Lquad_loops:
-.Lquad_loope:
-	 MNOP || [P0++] = R1 || R1 = [I0++];
-#endif
-	[P0++] = R1;
-
-	CC = P2 == 0;             /* any remaining bytes? */
-	P3 = I0;                  /* Amend P3 to updated ptr. */
-	IF !CC JUMP .Lbytes;
-	P3 = I1;
-	RTS;
-
-.Lbytes:     LSETUP (.Lbyte2_s, .Lbyte2_e) LC0=P2;
-.Lbyte2_s:   R1 = B[P3++](Z);
-.Lbyte2_e:   B[P0++] = R1;
-
-.Lfinished:  P3 = I1;
-	RTS;
-
-.Loverlap:
-	P2 += -1;
-	P0 = P0 + P2;
-	P3 = P3 + P2;
-	R1 = B[P3--] (Z);
-	CC = P2 == 0;
-	IF CC JUMP .Lno_loop;
-#if ANOMALY_05000245
-	NOP;
-	NOP;
-#endif
-	LSETUP (.Lol_s, .Lol_e) LC0 = P2;
-.Lol_s:    B[P0--] = R1;
-.Lol_e:    R1 = B[P3--] (Z);
-.Lno_loop: B[P0] = R1;
-	P3 = I1;
-	RTS;
-
-ENDPROC(_memmove)