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, 64 deletions

diff --git a/arch/blackfin/mach-bf561/coreb.c b/arch/blackfin/mach-bf561/coreb.c
deleted file mode 100644
index cf27554e76bf..000000000000
--- a/arch/blackfin/mach-bf561/coreb.c
+++ /dev/null
@@ -1,64 +0,0 @@
-/* Load firmware into Core B on a BF561
- *
- * Author: Bas Vermeulen <bvermeul@blackstar.xs4all.nl>
- *
- * Copyright 2004-2009 Analog Devices Inc.
- * Licensed under the GPL-2 or later.
- */
-
-/* The Core B reset func requires code in the application that is loaded into
- * Core B.  In order to reset, the application needs to install an interrupt
- * handler for Supplemental Interrupt 0, that sets RETI to 0xff600000 and
- * writes bit 11 of SICB_SYSCR when bit 5 of SICA_SYSCR is 0.  This causes Core
- * B to stall when Supplemental Interrupt 0 is set, and will reset PC to
- * 0xff600000 when COREB_SRAM_INIT is cleared.
- */
-
-#include <linux/device.h>
-#include <linux/fs.h>
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/miscdevice.h>
-
-#define CMD_COREB_START		_IO('b', 0)
-#define CMD_COREB_STOP		_IO('b', 1)
-#define CMD_COREB_RESET		_IO('b', 2)
-
-static long
-coreb_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
-{
-	int ret = 0;
-
-	switch (cmd) {
-	case CMD_COREB_START:
-		bfin_write_SYSCR(bfin_read_SYSCR() & ~0x0020);
-		break;
-	case CMD_COREB_STOP:
-		bfin_write_SYSCR(bfin_read_SYSCR() | 0x0020);
-		bfin_write_SICB_SYSCR(bfin_read_SICB_SYSCR() | 0x0080);
-		break;
-	case CMD_COREB_RESET:
-		bfin_write_SICB_SYSCR(bfin_read_SICB_SYSCR() | 0x0080);
-		break;
-	default:
-		ret = -EINVAL;
-		break;
-	}
-
-	CSYNC();
-
-	return ret;
-}
-
-static const struct file_operations coreb_fops = {
-	.owner          = THIS_MODULE,
-	.unlocked_ioctl = coreb_ioctl,
-	.llseek		= noop_llseek,
-};
-
-static struct miscdevice coreb_dev = {
-	.minor = MISC_DYNAMIC_MINOR,
-	.name  = "coreb",
-	.fops  = &coreb_fops,
-};
-builtin_misc_device(coreb_dev);