Commit bb9d8126 authored by Arnd Bergmann's avatar Arnd Bergmann
Browse files

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: default avatarArnd Bergmann <arnd@arndb.de>
parent 4ba66a97

Documentation/ioctl/ioctl-number.txt

+0 −1
Original line number Diff line number Diff line
@@ -305,7 +305,6 @@ Code Seq#(hex) Include File Comments 
0xA0	all	linux/sdp/sdp.h		Industrial Device Project

					<mailto:kenji@bitgate.com>

0xA1	0	linux/vtpm_proxy.h	TPM Emulator Proxy Driver

0xA2	00-0F	arch/tile/include/asm/hardwall.h

0xA3	80-8F	Port ACL		in development:

					<mailto:tlewis@mindspring.com>

0xA3	90-9F	linux/dtlk.h

MAINTAINERS

+0 −13
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@@ -13840,19 +13840,6 @@ S: Orphan 
F:	drivers/net/wireless/ti/

F:	include/linux/wl12xx.h



TILE ARCHITECTURE

W:	http://www.mellanox.com/repository/solutions/tile-scm/

S:	Orphan

F:	arch/tile/

F:	drivers/char/tile-srom.c

F:	drivers/edac/tile_edac.c

F:	drivers/net/ethernet/tile/

F:	drivers/rtc/rtc-tile.c

F:	drivers/tty/hvc/hvc_tile.c

F:	drivers/tty/serial/tilegx.c

F:	drivers/usb/host/*-tilegx.c

F:	include/linux/usb/tilegx.h



TIMEKEEPING, CLOCKSOURCE CORE, NTP, ALARMTIMER

M:	John Stultz <john.stultz@linaro.org>

M:	Thomas Gleixner <tglx@linutronix.de>

Makefile

+0 −8
Original line number Diff line number Diff line
@@ -339,14 +339,6 @@ ifeq ($(ARCH),sh64) 
       SRCARCH := sh

endif



# Additional ARCH settings for tile

ifeq ($(ARCH),tilepro)

       SRCARCH := tile

endif

ifeq ($(ARCH),tilegx)

       SRCARCH := tile

endif



KCONFIG_CONFIG	?= .config

export KCONFIG_CONFIG

arch/tile/Kbuild

deleted100644 → 0
+0 −3
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obj-y += kernel/

obj-y += mm/

arch/tile/Kconfig

deleted100644 → 0
+0 −481
Original line number Diff line number Diff line 
# SPDX-License-Identifier: GPL-2.0

# For a description of the syntax of this configuration file,

# see Documentation/kbuild/kconfig-language.txt.



config TILE

	def_bool y

	select ARCH_HAS_DEVMEM_IS_ALLOWED

	select ARCH_HAVE_NMI_SAFE_CMPXCHG

	select ARCH_WANT_FRAME_POINTERS

	select CC_OPTIMIZE_FOR_SIZE

	select EDAC_SUPPORT

	select GENERIC_CLOCKEVENTS

	select GENERIC_FIND_FIRST_BIT

	select GENERIC_IRQ_PROBE

	select GENERIC_IRQ_SHOW

	select GENERIC_PENDING_IRQ if SMP

	select GENERIC_STRNCPY_FROM_USER

	select GENERIC_STRNLEN_USER

	select HAVE_ARCH_SECCOMP_FILTER

	select HAVE_ARCH_TRACEHOOK

	select HAVE_CONTEXT_TRACKING

	select HAVE_DEBUG_BUGVERBOSE

	select HAVE_DEBUG_KMEMLEAK

	select HAVE_DEBUG_STACKOVERFLOW

	select HAVE_DMA_API_DEBUG

	select HAVE_EXIT_THREAD

	select HAVE_KVM if !TILEGX

	select HAVE_NMI if USE_PMC

	select HAVE_PERF_EVENTS

	select HAVE_SYSCALL_TRACEPOINTS

	select MODULES_USE_ELF_RELA

	select SYSCTL_EXCEPTION_TRACE

	select SYS_HYPERVISOR

	select USER_STACKTRACE_SUPPORT

	select USE_PMC if PERF_EVENTS

	select VIRT_TO_BUS



config MMU

	def_bool y



config GENERIC_CSUM

	def_bool y



config HAVE_ARCH_ALLOC_REMAP

	def_bool y



config HAVE_SETUP_PER_CPU_AREA

	def_bool y



config NEED_PER_CPU_PAGE_FIRST_CHUNK

	def_bool y



config SYS_SUPPORTS_HUGETLBFS

	def_bool y



# Support for additional huge page sizes besides HPAGE_SIZE.

# The software support is currently only present in the TILE-Gx

# hypervisor. TILEPro in any case does not support page sizes

# larger than the default HPAGE_SIZE.

config HUGETLB_SUPER_PAGES

	depends on HUGETLB_PAGE && TILEGX

	def_bool y



config GENERIC_TIME_VSYSCALL

	def_bool y



# Enable PMC if PERF_EVENTS, OPROFILE, or WATCHPOINTS are enabled.

config USE_PMC

	bool



# FIXME: tilegx can implement a more efficient rwsem.

config RWSEM_GENERIC_SPINLOCK

	def_bool y



# We only support gcc 4.4 and above, so this should work.

config ARCH_SUPPORTS_OPTIMIZED_INLINING

	def_bool y



config ARCH_PHYS_ADDR_T_64BIT

	def_bool y



config ARCH_DMA_ADDR_T_64BIT

	def_bool y



config NEED_DMA_MAP_STATE

	def_bool y



config ARCH_HAS_DMA_SET_COHERENT_MASK

	bool



config LOCKDEP_SUPPORT

	def_bool y



config STACKTRACE_SUPPORT

	def_bool y

	select STACKTRACE



# We use discontigmem for now; at some point we may want to switch

# to sparsemem (Tilera bug 7996).

config ARCH_DISCONTIGMEM_ENABLE

	def_bool y



config ARCH_DISCONTIGMEM_DEFAULT

	def_bool y



config TRACE_IRQFLAGS_SUPPORT

	def_bool y



# SMP is required for Tilera Linux.

config SMP

	def_bool y



config HVC_TILE

	depends on TTY

	select HVC_DRIVER

	select HVC_IRQ if TILEGX

	def_bool y



# Building with ARCH=tilegx (or ARCH=tile) implies using the

# 64-bit TILE-Gx toolchain, so force CONFIG_TILEGX on.

config TILEGX

	def_bool ARCH != "tilepro"

	select ARCH_SUPPORTS_ATOMIC_RMW

	select GENERIC_IRQ_LEGACY_ALLOC_HWIRQ

	select HAVE_ARCH_JUMP_LABEL

	select HAVE_ARCH_KGDB

	select HAVE_DYNAMIC_FTRACE

	select HAVE_FTRACE_MCOUNT_RECORD

	select HAVE_FUNCTION_GRAPH_TRACER

	select HAVE_FUNCTION_TRACER

	select HAVE_KPROBES

	select HAVE_KRETPROBES

	select SPARSE_IRQ



config TILEPRO

	def_bool !TILEGX



config 64BIT

	def_bool TILEGX



config ARCH_DEFCONFIG

	string

	default "arch/tile/configs/tilepro_defconfig" if !TILEGX

	default "arch/tile/configs/tilegx_defconfig" if TILEGX



config PGTABLE_LEVELS

	int

	default 3 if 64BIT

	default 2



source "init/Kconfig"



source "kernel/Kconfig.freezer"



menu "Tilera-specific configuration"



config NR_CPUS

	int "Maximum number of tiles (2-255)"

	range 2 255

	depends on SMP

	default "64"

	---help---

	  Building with 64 is the recommended value, but a slightly

	  smaller kernel memory footprint results from using a smaller

	  value on chips with fewer tiles.



choice

	prompt "Kernel page size"

	default PAGE_SIZE_64KB

	help

	  This lets you select the page size of the kernel.  For best

	  performance on memory-intensive applications, a page size of 64KB

	  is recommended.  For workloads involving many small files, many

	  connections, etc., it may be better to select 16KB, which uses

	  memory more efficiently at some cost in TLB performance.



	  Note that for TILEPro, you must also rebuild the hypervisor

	  with a matching page size.



config PAGE_SIZE_4KB

	bool "4KB" if TILEPRO



config PAGE_SIZE_16KB

	bool "16KB"



config PAGE_SIZE_64KB

	bool "64KB"



endchoice



source "kernel/Kconfig.hz"



config KEXEC

	bool "kexec system call"

	select KEXEC_CORE

	---help---

	  kexec is a system call that implements the ability to shutdown your

	  current kernel, and to start another kernel.  It is like a reboot

	  but it is independent of the system firmware.   It is used

	  to implement the "mboot" Tilera booter.



	  The name comes from the similarity to the exec system call.



config COMPAT

	bool "Support 32-bit TILE-Gx binaries in addition to 64-bit"

	depends on TILEGX

	select COMPAT_BINFMT_ELF

	default y

	---help---

	  If enabled, the kernel will support running TILE-Gx binaries

	  that were built with the -m32 option.



config SECCOMP

	bool "Enable seccomp to safely compute untrusted bytecode"

	depends on PROC_FS

	help

	  This kernel feature is useful for number crunching applications

	  that may need to compute untrusted bytecode during their

	  execution. By using pipes or other transports made available to

	  the process as file descriptors supporting the read/write

	  syscalls, it's possible to isolate those applications in

	  their own address space using seccomp. Once seccomp is

	  enabled via prctl, it cannot be disabled and the task is only

	  allowed to execute a few safe syscalls defined by each seccomp

	  mode.



	  If unsure, say N.



config SYSVIPC_COMPAT

	def_bool y

	depends on COMPAT && SYSVIPC



# We do not currently support disabling HIGHMEM on tilepro.

config HIGHMEM

	bool # "Support for more than 512 MB of RAM"

	default !TILEGX

	---help---

	  Linux can use the full amount of RAM in the system by

	  default.  However, the address space of TILE processors is

	  only 4 Gigabytes large. That means that, if you have a large

	  amount of physical memory, not all of it can be "permanently

	  mapped" by the kernel. The physical memory that's not

	  permanently mapped is called "high memory".



	  If you are compiling a kernel which will never run on a

	  machine with more than 512 MB total physical RAM, answer

	  "false" here. This will result in the kernel mapping all of

	  physical memory into the top 1 GB of virtual memory space.



	  If unsure, say "true".



config ZONE_DMA32

	def_bool y



config IOMMU_HELPER

	bool



config NEED_SG_DMA_LENGTH

	bool



config SWIOTLB

	bool

	default TILEGX

	select DMA_DIRECT_OPS

	select IOMMU_HELPER

	select NEED_SG_DMA_LENGTH

	select ARCH_HAS_DMA_SET_COHERENT_MASK



# We do not currently support disabling NUMA.

config NUMA

	bool # "NUMA Memory Allocation and Scheduler Support"

	depends on SMP && DISCONTIGMEM

	default y

	---help---

	  NUMA memory allocation is required for TILE processors

	  unless booting with memory striping enabled in the

	  hypervisor, or with only a single memory controller.

	  It is recommended that this option always be enabled.



config NODES_SHIFT

	int "Log base 2 of the max number of memory controllers"

	default 2

	depends on NEED_MULTIPLE_NODES

	---help---

	  By default, 2, i.e. 2^2 == 4 DDR2 controllers.

	  In a system with more controllers, this value should be raised.



choice

	depends on !TILEGX

	prompt "Memory split" if EXPERT

	default VMSPLIT_3G

	---help---

	  Select the desired split between kernel and user memory.



	  If the address range available to the kernel is less than the

	  physical memory installed, the remaining memory will be available

	  as "high memory". Accessing high memory is a little more costly

	  than low memory, as it needs to be mapped into the kernel first.

	  Note that increasing the kernel address space limits the range

	  available to user programs, making the address space there

	  tighter.  Selecting anything other than the default 3G/1G split

	  will also likely make your kernel incompatible with binary-only

	  kernel modules.



	  If you are not absolutely sure what you are doing, leave this

	  option alone!



	config VMSPLIT_3_75G

		bool "3.75G/0.25G user/kernel split (no kernel networking)"

	config VMSPLIT_3_5G

		bool "3.5G/0.5G user/kernel split"

	config VMSPLIT_3G

		bool "3G/1G user/kernel split"

	config VMSPLIT_2_75G

		bool "2.75G/1.25G user/kernel split (for full 1G low memory)"

	config VMSPLIT_2_5G

		bool "2.5G/1.5G user/kernel split"

	config VMSPLIT_2_25G

		bool "2.25G/1.75G user/kernel split"

	config VMSPLIT_2G

		bool "2G/2G user/kernel split"

	config VMSPLIT_1G

		bool "1G/3G user/kernel split"

endchoice



config PAGE_OFFSET

	hex

	depends on !64BIT

	default 0xF0000000 if VMSPLIT_3_75G

	default 0xE0000000 if VMSPLIT_3_5G

	default 0xB0000000 if VMSPLIT_2_75G

	default 0xA0000000 if VMSPLIT_2_5G

	default 0x90000000 if VMSPLIT_2_25G

	default 0x80000000 if VMSPLIT_2G

	default 0x40000000 if VMSPLIT_1G

	default 0xC0000000



source "mm/Kconfig"



source "kernel/Kconfig.preempt"



config CMDLINE_BOOL

	bool "Built-in kernel command line"

	default n

	---help---

	  Allow for specifying boot arguments to the kernel at

	  build time.  On some systems (e.g. embedded ones), it is

	  necessary or convenient to provide some or all of the

	  kernel boot arguments with the kernel itself (that is,

	  to not rely on the boot loader to provide them.)



	  To compile command line arguments into the kernel,

	  set this option to 'Y', then fill in the

	  the boot arguments in CONFIG_CMDLINE.



	  Systems with fully functional boot loaders (e.g. mboot, or

	  if booting over PCI) should leave this option set to 'N'.



config CMDLINE

	string "Built-in kernel command string"

	depends on CMDLINE_BOOL

	default ""

	---help---

	  Enter arguments here that should be compiled into the kernel

	  image and used at boot time.  If the boot loader provides a

	  command line at boot time, it is appended to this string to

	  form the full kernel command line, when the system boots.



	  However, you can use the CONFIG_CMDLINE_OVERRIDE option to

	  change this behavior.



	  In most cases, the command line (whether built-in or provided

	  by the boot loader) should specify the device for the root

	  file system.



config CMDLINE_OVERRIDE

	bool "Built-in command line overrides boot loader arguments"

	default n

	depends on CMDLINE_BOOL

	---help---

	  Set this option to 'Y' to have the kernel ignore the boot loader

	  command line, and use ONLY the built-in command line.



	  This is used to work around broken boot loaders.  This should

	  be set to 'N' under normal conditions.



config VMALLOC_RESERVE

	hex

	default 0x2000000



config HARDWALL

	bool "Hardwall support to allow access to user dynamic network"

	default y



config KERNEL_PL

	int "Processor protection level for kernel"

	range 1 2

	default 2 if TILEGX

	default 1 if !TILEGX

	---help---

	  Since MDE 4.2, the Tilera hypervisor runs the kernel

	  at PL2 by default.  If running under an older hypervisor,

	  or as a KVM guest, you must run at PL1.  (The current

	  hypervisor may also be recompiled with "make HV_PL=2" to

	  allow it to run a kernel at PL1, but clients running at PL1

	  are not expected to be supported indefinitely.)



	  If you're not sure, don't change the default.



source "arch/tile/gxio/Kconfig"



endmenu  # Tilera-specific configuration



menu "Bus options"



config PCI

	bool "PCI support"

	default y

	select PCI_DOMAINS

	select GENERIC_PCI_IOMAP

	select TILE_GXIO_TRIO if TILEGX

	select PCI_MSI if TILEGX

	---help---

	  Enable PCI root complex support, so PCIe endpoint devices can

	  be attached to the Tile chip.  Many, but not all, PCI devices

	  are supported under Tilera's root complex driver.



config PCI_DOMAINS

	bool



config NO_IOMEM

	def_bool !PCI



config NO_IOPORT_MAP

	def_bool !PCI



config TILE_PCI_IO

	bool "PCI I/O space support"

	default n

	depends on PCI

	depends on TILEGX

	---help---

	  Enable PCI I/O space support on TILEGx. Since the PCI I/O space

	  is used by few modern PCIe endpoint devices, its support is disabled

	  by default to save the TRIO PIO Region resource for other purposes.



source "drivers/pci/Kconfig"



config TILE_USB

	tristate "Tilera USB host adapter support"

	default y

	depends on USB

	depends on TILEGX

	select TILE_GXIO_USB_HOST

	---help---

	  Provides USB host adapter support for the built-in EHCI and OHCI

	  interfaces on TILE-Gx chips.



endmenu



menu "Executable file formats"



source "fs/Kconfig.binfmt"



endmenu



source "net/Kconfig"



source "drivers/Kconfig"



source "fs/Kconfig"



source "arch/tile/Kconfig.debug"



source "security/Kconfig"



source "crypto/Kconfig"



source "lib/Kconfig"



source "arch/tile/kvm/Kconfig"

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