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, 77 deletions

diff --git a/arch/tile/Makefile b/arch/tile/Makefile
deleted file mode 100644
index 8fa0befba32b..000000000000
--- a/arch/tile/Makefile
+++ /dev/null
@@ -1,77 +0,0 @@
-#
-# This file is subject to the terms and conditions of the GNU General Public
-# License.  See the file "COPYING" in the main directory of this archive
-# for more details.
-#
-# This file is included by the global makefile so that you can add your own
-# architecture-specific flags and dependencies. Remember to do have actions
-# for "archclean" and "archdep" for cleaning up and making dependencies for
-# this architecture
-
-# If building with TILERA_ROOT set (i.e. using the Tilera Multicore
-# Development Environment) we can set CROSS_COMPILE based on that.
-# If we're not cross-compiling, make sure we're on the right architecture.
-# Only bother to test for a few common targets, to avoid useless errors.
-ifeq ($(CROSS_COMPILE),)
-  ifdef TILERA_ROOT
-    CROSS_COMPILE := $(TILERA_ROOT)/bin/tile-
-  else
-    goals := $(if $(MAKECMDGOALS), $(MAKECMDGOALS), all)
-    ifneq ($(strip $(filter vmlinux modules all,$(goals))),)
-      HOST_ARCH := $(shell uname -m)
-      ifneq ($(HOST_ARCH),$(ARCH))
-$(error Set TILERA_ROOT or CROSS_COMPILE when building $(ARCH) on $(HOST_ARCH))
-      endif
-    endif
-  endif
-endif
-
-# The tile compiler may emit .eh_frame information for backtracing.
-# In kernel modules, this causes load failures due to unsupported relocations.
-KBUILD_CFLAGS   += -fno-asynchronous-unwind-tables
-
-LIBGCC_PATH     := \
-  $(shell $(CC) $(KBUILD_CFLAGS) $(KCFLAGS) -print-libgcc-file-name)
-
-# Provide the path to use for "make defconfig".
-# We default to the newer TILE-Gx architecture if only "tile" is given.
-ifeq ($(ARCH),tile)
-        KBUILD_DEFCONFIG := tilegx_defconfig
-else
-        KBUILD_DEFCONFIG := $(ARCH)_defconfig
-endif
-
-# Used as a file extension when useful, e.g. head_$(BITS).o
-# Not needed for (e.g.) "$(CC) -m32" since the compiler automatically
-# uses the right default anyway.
-export BITS
-ifeq ($(CONFIG_TILEGX),y)
-BITS := 64
-else
-BITS := 32
-endif
-
-CHECKFLAGS	+= -m$(BITS)
-
-head-y		:= arch/tile/kernel/head_$(BITS).o
-
-libs-y		+= arch/tile/lib/
-libs-y		+= $(LIBGCC_PATH)
-
-# See arch/tile/Kbuild for content of core part of the kernel
-core-y		+= arch/tile/
-
-core-$(CONFIG_TILE_GXIO) += arch/tile/gxio/
-
-ifdef TILERA_ROOT
-INSTALL_PATH ?= $(TILERA_ROOT)/tile/boot
-endif
-
-install:
-	install -D -m 755 vmlinux $(INSTALL_PATH)/vmlinux-$(KERNELRELEASE)
-	install -D -m 644 .config $(INSTALL_PATH)/config-$(KERNELRELEASE)
-	install -D -m 644 System.map $(INSTALL_PATH)/System.map-$(KERNELRELEASE)
-
-define archhelp
-	echo '  install         - install kernel into $(INSTALL_PATH)'
-endef