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, 84 deletions

diff --git a/arch/blackfin/kernel/flat.c b/arch/blackfin/kernel/flat.c
deleted file mode 100644
index 8ebc54daaa8e..000000000000
--- a/arch/blackfin/kernel/flat.c
+++ /dev/null
@@ -1,84 +0,0 @@
-/*
- * Copyright 2007 Analog Devices Inc.
- *
- * Licensed under the GPL-2.
- */
-
-#include <linux/module.h>
-#include <linux/sched.h>
-#include <linux/mm_types.h>
-#include <linux/flat.h>
-
-#define FLAT_BFIN_RELOC_TYPE_16_BIT 0
-#define FLAT_BFIN_RELOC_TYPE_16H_BIT 1
-#define FLAT_BFIN_RELOC_TYPE_32_BIT 2
-
-unsigned long bfin_get_addr_from_rp(u32 *ptr,
-		u32 relval,
-		u32 flags,
-		u32 *persistent)
-{
-	unsigned short *usptr = (unsigned short *)ptr;
-	int type = (relval >> 26) & 7;
-	u32 val;
-
-	switch (type) {
-	case FLAT_BFIN_RELOC_TYPE_16_BIT:
-	case FLAT_BFIN_RELOC_TYPE_16H_BIT:
-		usptr = (unsigned short *)ptr;
-		pr_debug("*usptr = %x", get_unaligned(usptr));
-		val = get_unaligned(usptr);
-		val += *persistent;
-		break;
-
-	case FLAT_BFIN_RELOC_TYPE_32_BIT:
-		pr_debug("*ptr = %x", get_unaligned(ptr));
-		val = get_unaligned(ptr);
-		break;
-
-	default:
-		pr_debug("BINFMT_FLAT: Unknown relocation type %x\n", type);
-		return 0;
-	}
-
-	/*
-	 * Stack-relative relocs contain the offset into the stack, we
-	 * have to add the stack's start address here and return 1 from
-	 * flat_addr_absolute to prevent the normal address calculations
-	 */
-	if (relval & (1 << 29))
-		return val + current->mm->context.end_brk;
-
-	if ((flags & FLAT_FLAG_GOTPIC) == 0)
-		val = htonl(val);
-	return val;
-}
-EXPORT_SYMBOL(bfin_get_addr_from_rp);
-
-/*
- * Insert the address ADDR into the symbol reference at RP;
- * RELVAL is the raw relocation-table entry from which RP is derived
- */
-void bfin_put_addr_at_rp(u32 *ptr, u32 addr, u32 relval)
-{
-	unsigned short *usptr = (unsigned short *)ptr;
-	int type = (relval >> 26) & 7;
-
-	switch (type) {
-	case FLAT_BFIN_RELOC_TYPE_16_BIT:
-		put_unaligned(addr, usptr);
-		pr_debug("new value %x at %p", get_unaligned(usptr), usptr);
-		break;
-
-	case FLAT_BFIN_RELOC_TYPE_16H_BIT:
-		put_unaligned(addr >> 16, usptr);
-		pr_debug("new value %x", get_unaligned(usptr));
-		break;
-
-	case FLAT_BFIN_RELOC_TYPE_32_BIT:
-		put_unaligned(addr, ptr);
-		pr_debug("new ptr =%x", get_unaligned(ptr));
-		break;
-	}
-}
-EXPORT_SYMBOL(bfin_put_addr_at_rp);