arch: remove tile port

The Tile architecture port was added by Chris Metcalf in 2010, and
maintained until early 2018 when he orphaned it due to his departure
from Mellanox, and nobody else stepped up to maintain it. The product
line is still around in the form of the BlueField SoC, but no longer
uses the Tile architecture.

There are also still products for sale with Tile-GX SoCs, notably the
Mikrotik CCR router family. The products all use old (linux-3.3) kernels
with lots of patches and won't be upgraded by their manufacturers. There
have been efforts to port both OpenWRT and Debian to these, but both
projects have stalled and are very unlikely to be continued in the future.

Given that we are reasonably sure that nobody is still using the port
with an upstream kernel any more, it seems better to remove it now while
the port is in a good shape than to let it bitrot for a few years first.

Cc: Chris Metcalf <chris.d.metcalf@gmail.com>
Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Link: http://www.mellanox.com/page/npu_multicore_overview
Link: https://jenkins.debian.net/view/rebootstrap/job/rebootstrap_tilegx_gcc7/
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

1 files changed, 0 insertions, 94 deletions

diff --git a/arch/tile/lib/exports.c b/arch/tile/lib/exports.c
deleted file mode 100644
index ecce8e177e3f..000000000000
--- a/arch/tile/lib/exports.c
+++ /dev/null
@@ -1,94 +0,0 @@
-/*
- * Copyright 2010 Tilera Corporation. All Rights Reserved.
- *
- *   This program is free software; you can redistribute it and/or
- *   modify it under the terms of the GNU General Public License
- *   as published by the Free Software Foundation, version 2.
- *
- *   This program is distributed in the hope that it will be useful, but
- *   WITHOUT ANY WARRANTY; without even the implied warranty of
- *   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
- *   NON INFRINGEMENT.  See the GNU General Public License for
- *   more details.
- *
- * Exports from assembler code and from libtile-cc.
- */
-
-#include <linux/module.h>
-
-/* arch/tile/lib/usercopy.S */
-#include <linux/uaccess.h>
-EXPORT_SYMBOL(clear_user_asm);
-EXPORT_SYMBOL(flush_user_asm);
-EXPORT_SYMBOL(finv_user_asm);
-
-/* arch/tile/kernel/entry.S */
-#include <linux/kernel.h>
-#include <asm/processor.h>
-EXPORT_SYMBOL(current_text_addr);
-
-/* arch/tile/kernel/head.S */
-EXPORT_SYMBOL(empty_zero_page);
-
-#ifdef CONFIG_FUNCTION_TRACER
-/* arch/tile/kernel/mcount_64.S */
-#include <asm/ftrace.h>
-EXPORT_SYMBOL(__mcount);
-#endif /* CONFIG_FUNCTION_TRACER */
-
-/* arch/tile/lib/, various memcpy files */
-EXPORT_SYMBOL(memcpy);
-EXPORT_SYMBOL(raw_copy_to_user);
-EXPORT_SYMBOL(raw_copy_from_user);
-#ifdef __tilegx__
-EXPORT_SYMBOL(raw_copy_in_user);
-#endif
-
-/* hypervisor glue */
-#include <hv/hypervisor.h>
-EXPORT_SYMBOL(hv_dev_open);
-EXPORT_SYMBOL(hv_dev_pread);
-EXPORT_SYMBOL(hv_dev_pwrite);
-EXPORT_SYMBOL(hv_dev_preada);
-EXPORT_SYMBOL(hv_dev_pwritea);
-EXPORT_SYMBOL(hv_dev_poll);
-EXPORT_SYMBOL(hv_dev_poll_cancel);
-EXPORT_SYMBOL(hv_dev_close);
-EXPORT_SYMBOL(hv_sysconf);
-EXPORT_SYMBOL(hv_confstr);
-EXPORT_SYMBOL(hv_get_rtc);
-EXPORT_SYMBOL(hv_set_rtc);
-
-/* libgcc.a */
-uint32_t __udivsi3(uint32_t dividend, uint32_t divisor);
-EXPORT_SYMBOL(__udivsi3);
-int32_t __divsi3(int32_t dividend, int32_t divisor);
-EXPORT_SYMBOL(__divsi3);
-uint64_t __udivdi3(uint64_t dividend, uint64_t divisor);
-EXPORT_SYMBOL(__udivdi3);
-int64_t __divdi3(int64_t dividend, int64_t divisor);
-EXPORT_SYMBOL(__divdi3);
-uint32_t __umodsi3(uint32_t dividend, uint32_t divisor);
-EXPORT_SYMBOL(__umodsi3);
-int32_t __modsi3(int32_t dividend, int32_t divisor);
-EXPORT_SYMBOL(__modsi3);
-uint64_t __umoddi3(uint64_t dividend, uint64_t divisor);
-EXPORT_SYMBOL(__umoddi3);
-int64_t __moddi3(int64_t dividend, int64_t divisor);
-EXPORT_SYMBOL(__moddi3);
-#ifdef __tilegx__
-typedef int TItype __attribute__((mode(TI)));
-TItype __multi3(TItype a, TItype b);
-EXPORT_SYMBOL(__multi3);  /* required for gcc 7 and later */
-#else
-int64_t __muldi3(int64_t, int64_t);
-EXPORT_SYMBOL(__muldi3);
-uint64_t __lshrdi3(uint64_t, unsigned int);
-EXPORT_SYMBOL(__lshrdi3);
-uint64_t __ashrdi3(uint64_t, unsigned int);
-EXPORT_SYMBOL(__ashrdi3);
-uint64_t __ashldi3(uint64_t, unsigned int);
-EXPORT_SYMBOL(__ashldi3);
-int __ffsdi2(uint64_t);
-EXPORT_SYMBOL(__ffsdi2);
-#endif