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Commit 26202873 authored by Hans-Christian Noren Egtvedt's avatar Hans-Christian Noren Egtvedt
Browse files

avr32: remove support for AVR32 architecture 



This patch drops support for AVR32 architecture from the Linux kernel.

The AVR32 architecture is not keeping up with the development of the
kernel, and since it shares so much of the drivers with Atmel ARM SoC,
it is starting to hinder these drivers to develop swiftly.

Also, all AVR32 AP7 SoC processors are end of lifed from Atmel (now
Microchip).

Finally, the GCC toolchain is stuck at version 4.2.x, and has not
received any patches since the last release from Atmel;
4.2.4-atmel.1.1.3.avr32linux.1. When building kernel v4.10, this
toolchain is no longer able to properly link the network stack.

Haavard and I have came to the conclusion that we feel keeping AVR32 on
life support offers more obstacles for Atmel ARMs, than it gives joy to
AVR32 users. I also suspect there are very few AVR32 users left today,
if anybody at all.

Signed-off-by: default avatarHans-Christian Noren Egtvedt <egtvedt@samfundet.no>
Signed-off-by: default avatarHåvard Skinnemoen <hskinnemoen@gmail.com>
Signed-off-by: default avatarNicolas Ferre <nicolas.ferre@microchip.com>
Acked-by: default avatarAndy Shevchenko <andy.shevchenko@gmail.com>
Acked-by: default avatarBoris Brezillon <boris.brezillon@free-electrons.com>
parent a351e9b9

CREDITS

+8 −0
Original line number Diff line number Diff line
@@ -1034,6 +1034,10 @@ S: 2037 Walnut #6 
S: Boulder, Colorado 80302

S: USA



N: Hans-Christian Noren Egtvedt

E: egtvedt@samfundet.no

D: AVR32 architecture maintainer.



N: Heiko Eißfeldt

E: heiko@colossus.escape.de heiko@unifix.de

D: verify_area stuff, generic SCSI fixes
@@ -3398,6 +3402,10 @@ S: Suite 101 
S: Markham, Ontario L3R 2Z6

S: Canada



N: Haavard Skinnemoen

M: Haavard Skinnemoen <hskinnemoen@gmail.com>

D: AVR32 architecture port to Linux and maintainer.



N: Rick Sladkey

E: jrs@world.std.com

D: utility hacker: Emacs, NFS server, mount, kmem-ps, UPS debugger, strace, GDB

MAINTAINERS

+0 −15
Original line number Diff line number Diff line
@@ -2327,21 +2327,6 @@ S: Maintained 
F:	drivers/auxdisplay/

F:	include/linux/cfag12864b.h



AVR32 ARCHITECTURE

M:	Haavard Skinnemoen <hskinnemoen@gmail.com>

M:	Hans-Christian Egtvedt <egtvedt@samfundet.no>

W:	http://www.atmel.com/products/AVR32/

W:	http://mirror.egtvedt.no/avr32linux.org/

W:	http://avrfreaks.net/

S:	Maintained

F:	arch/avr32/



AVR32/AT32AP MACHINE SUPPORT

M:	Haavard Skinnemoen <hskinnemoen@gmail.com>

M:	Hans-Christian Egtvedt <egtvedt@samfundet.no>

S:	Maintained

F:	arch/avr32/mach-at32ap/



AX.25 NETWORK LAYER

M:	Ralf Baechle <ralf@linux-mips.org>

L:	linux-hams@vger.kernel.org

arch/avr32/Kconfig

deleted100644 → 0
+0 −288
Original line number Diff line number Diff line 
config AVR32

	def_bool y

	# With EXPERT=n, we get lots of stuff automatically selected

	# that we usually don't need on AVR32.

	select EXPERT

	select HAVE_CLK

	select HAVE_EXIT_THREAD

	select HAVE_OPROFILE

	select HAVE_KPROBES

	select VIRT_TO_BUS

	select GENERIC_IRQ_PROBE

	select GENERIC_ATOMIC64

	select HARDIRQS_SW_RESEND

	select GENERIC_IRQ_SHOW

	select ARCH_HAVE_CUSTOM_GPIO_H

	select ARCH_WANT_IPC_PARSE_VERSION

	select ARCH_HAVE_NMI_SAFE_CMPXCHG

	select GENERIC_CLOCKEVENTS

	select HAVE_MOD_ARCH_SPECIFIC

	select MODULES_USE_ELF_RELA

	select HAVE_NMI

	help

	  AVR32 is a high-performance 32-bit RISC microprocessor core,

	  designed for cost-sensitive embedded applications, with particular

	  emphasis on low power consumption and high code density.



	  There is an AVR32 Linux project with a web page at

	  http://avr32linux.org/.



config STACKTRACE_SUPPORT

	def_bool y



config LOCKDEP_SUPPORT

	def_bool y



config TRACE_IRQFLAGS_SUPPORT

	def_bool y



config RWSEM_GENERIC_SPINLOCK

	def_bool y



config RWSEM_XCHGADD_ALGORITHM

	def_bool n



config ARCH_HAS_ILOG2_U32

	def_bool n



config ARCH_HAS_ILOG2_U64

	def_bool n



config GENERIC_HWEIGHT

	def_bool y



config GENERIC_CALIBRATE_DELAY

	def_bool y



config GENERIC_BUG

	def_bool y

	depends on BUG



source "init/Kconfig"



source "kernel/Kconfig.freezer"



menu "System Type and features"



config SUBARCH_AVR32B

	bool

config MMU

	bool

config PERFORMANCE_COUNTERS

	bool



config PLATFORM_AT32AP

	bool

	select SUBARCH_AVR32B

	select MMU

	select PERFORMANCE_COUNTERS

	select GPIOLIB

	select GENERIC_ALLOCATOR

	select HAVE_FB_ATMEL



#

# CPU types

#



# AP7000 derivatives

config CPU_AT32AP700X

	bool

	select PLATFORM_AT32AP

config CPU_AT32AP7000

	bool

	select CPU_AT32AP700X

config CPU_AT32AP7001

	bool

	select CPU_AT32AP700X

config CPU_AT32AP7002

	bool

	select CPU_AT32AP700X



# AP700X boards

config BOARD_ATNGW100_COMMON

	bool

	select CPU_AT32AP7000



choice

	prompt "AVR32 board type"

	default BOARD_ATSTK1000



config BOARD_ATSTK1000

	bool "ATSTK1000 evaluation board"



config BOARD_ATNGW100_MKI

	bool "ATNGW100 Network Gateway"

	select BOARD_ATNGW100_COMMON



config BOARD_ATNGW100_MKII

	bool "ATNGW100 mkII Network Gateway"

	select BOARD_ATNGW100_COMMON



config BOARD_HAMMERHEAD

	bool "Hammerhead board"

	select CPU_AT32AP7000

	select USB_ARCH_HAS_HCD

	help

	  The Hammerhead platform is built around an AVR32 32-bit microcontroller from Atmel.

	  It offers versatile peripherals, such as ethernet, usb device, usb host etc.



	  The board also incorporates a power supply and is a Power over Ethernet (PoE) Powered

	  Device (PD).



	  Additionally, a Cyclone III FPGA from Altera is integrated on the board. The FPGA is

	  mapped into the 32-bit AVR memory bus. The FPGA offers two DDR2 SDRAM interfaces, which

	  will cover even the most exceptional need of memory bandwidth. Together with the onboard

	  video decoder the board is ready for video processing.



	  For more information see: http://www.miromico.ch/index.php/hammerhead.html 



config BOARD_FAVR_32

	bool "Favr-32 LCD-board"

	select CPU_AT32AP7000



config BOARD_MERISC

	bool "Merisc board"

	select CPU_AT32AP7000

	help

	  Merisc is the family name for a range of AVR32-based boards.



	  The boards are designed to be used in a man-machine

	  interfacing environment, utilizing a touch-based graphical

	  user interface. They host a vast range of I/O peripherals as

	  well as a large SDRAM & Flash memory bank.



	  For more information see: http://www.martinsson.se/merisc



config BOARD_MIMC200

	bool "MIMC200 CPU board"

	select CPU_AT32AP7000

endchoice



source "arch/avr32/boards/atstk1000/Kconfig"

source "arch/avr32/boards/atngw100/Kconfig"

source "arch/avr32/boards/hammerhead/Kconfig"

source "arch/avr32/boards/favr-32/Kconfig"

source "arch/avr32/boards/merisc/Kconfig"



choice

	prompt "Boot loader type"

	default LOADER_U_BOOT



config	LOADER_U_BOOT

	bool "U-Boot (or similar) bootloader"

endchoice



source "arch/avr32/mach-at32ap/Kconfig"



config LOAD_ADDRESS

	hex

	default 0x10000000 if LOADER_U_BOOT=y && CPU_AT32AP700X=y



config ENTRY_ADDRESS

	hex

	default 0x90000000 if LOADER_U_BOOT=y && CPU_AT32AP700X=y



config PHYS_OFFSET

	hex

	default 0x10000000 if CPU_AT32AP700X=y



source "kernel/Kconfig.preempt"



config QUICKLIST

	def_bool y



config ARCH_HAVE_MEMORY_PRESENT

	def_bool n



config NEED_NODE_MEMMAP_SIZE

	def_bool n



config ARCH_FLATMEM_ENABLE

	def_bool y



config ARCH_DISCONTIGMEM_ENABLE

	def_bool n



config ARCH_SPARSEMEM_ENABLE

	def_bool n



config NODES_SHIFT

	int

	default "2"

	depends on NEED_MULTIPLE_NODES



source "mm/Kconfig"



config OWNERSHIP_TRACE

	bool "Ownership trace support"

	default y

	help

	  Say Y to generate an Ownership Trace message on every context switch,

	  enabling Nexus-compliant debuggers to keep track of the PID of the

	  currently executing task.



config NMI_DEBUGGING

	bool "NMI Debugging"

	default n

	help

	  Say Y here and pass the nmi_debug command-line parameter to

	  the kernel to turn on NMI debugging. Depending on the value

	  of the nmi_debug option, various pieces of information will

	  be dumped to the console when a Non-Maskable Interrupt

	  happens.



# FPU emulation goes here



source "kernel/Kconfig.hz"



config CMDLINE

	string "Default kernel command line"

	default ""

	help

	  If you don't have a boot loader capable of passing a command line string

	  to the kernel, you may specify one here. As a minimum, you should specify

	  the memory size and the root device (e.g., mem=8M, root=/dev/nfs).



endmenu



menu "Power management options"



source "kernel/power/Kconfig"



config ARCH_SUSPEND_POSSIBLE

	def_bool y



menu "CPU Frequency scaling"

source "drivers/cpufreq/Kconfig"

endmenu



endmenu



menu "Bus options"



config PCI

	bool



source "drivers/pci/Kconfig"



source "drivers/pcmcia/Kconfig"



endmenu



menu "Executable file formats"

source "fs/Kconfig.binfmt"

endmenu



source "net/Kconfig"



source "drivers/Kconfig"



source "fs/Kconfig"



source "arch/avr32/Kconfig.debug"



source "security/Kconfig"



source "crypto/Kconfig"



source "lib/Kconfig"

arch/avr32/Kconfig.debug

deleted100644 → 0
+0 −9
Original line number Diff line number Diff line 
menu "Kernel hacking"



config TRACE_IRQFLAGS_SUPPORT

	bool

	default y



source "lib/Kconfig.debug"



endmenu

arch/avr32/Makefile

deleted100644 → 0
+0 −84
Original line number Diff line number Diff line 
#

# 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.

#

# Copyright (C) 2004-2006 Atmel Corporation.



# Default target when executing plain make

.PHONY: all

all: uImage vmlinux.elf



KBUILD_DEFCONFIG	:= atstk1002_defconfig



KBUILD_CFLAGS	+= -pipe -fno-builtin -mno-pic -D__linux__

KBUILD_AFLAGS	+= -mrelax -mno-pic

KBUILD_CFLAGS_MODULE += -mno-relax

LDFLAGS_vmlinux	+= --relax



cpuflags-$(CONFIG_PLATFORM_AT32AP)	+= -march=ap



KBUILD_CFLAGS	+= $(cpuflags-y)

KBUILD_AFLAGS	+= $(cpuflags-y)



CHECKFLAGS	+= -D__avr32__ -D__BIG_ENDIAN



machine-$(CONFIG_PLATFORM_AT32AP) := at32ap

machdirs	:= $(patsubst %,arch/avr32/mach-%/, $(machine-y))



KBUILD_CPPFLAGS	+= $(patsubst %,-I$(srctree)/%include,$(machdirs))



head-$(CONFIG_LOADER_U_BOOT)		+= arch/avr32/boot/u-boot/head.o

head-y					+= arch/avr32/kernel/head.o

core-y					+= $(machdirs)

core-$(CONFIG_BOARD_ATSTK1000)		+= arch/avr32/boards/atstk1000/

core-$(CONFIG_BOARD_ATNGW100_COMMON)	+= arch/avr32/boards/atngw100/

core-$(CONFIG_BOARD_HAMMERHEAD)		+= arch/avr32/boards/hammerhead/

core-$(CONFIG_BOARD_FAVR_32)		+= arch/avr32/boards/favr-32/

core-$(CONFIG_BOARD_MERISC)		+= arch/avr32/boards/merisc/

core-$(CONFIG_BOARD_MIMC200)		+= arch/avr32/boards/mimc200/

core-$(CONFIG_LOADER_U_BOOT)		+= arch/avr32/boot/u-boot/

core-y					+= arch/avr32/kernel/

core-y					+= arch/avr32/mm/

drivers-$(CONFIG_OPROFILE)		+= arch/avr32/oprofile/

libs-y					+= arch/avr32/lib/



BOOT_TARGETS := vmlinux.elf vmlinux.bin uImage uImage.srec



.PHONY: $(BOOT_TARGETS) install



boot := arch/$(ARCH)/boot/images



             KBUILD_IMAGE := $(boot)/uImage

vmlinux.elf: KBUILD_IMAGE := $(boot)/vmlinux.elf

vmlinux.cso: KBUILD_IMAGE := $(boot)/vmlinux.cso

uImage.srec: KBUILD_IMAGE := $(boot)/uImage.srec

uImage:      KBUILD_IMAGE := $(boot)/uImage



quiet_cmd_listing = LST     $@

      cmd_listing = avr32-linux-objdump $(OBJDUMPFLAGS) -lS $< > $@

quiet_cmd_disasm  = DIS     $@

      cmd_disasm  = avr32-linux-objdump $(OBJDUMPFLAGS) -d $< > $@



vmlinux.elf vmlinux.bin uImage.srec uImage vmlinux.cso: vmlinux

	$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@



install: vmlinux

	$(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) $@



vmlinux.s: vmlinux

	$(call if_changed,disasm)



vmlinux.lst: vmlinux

	$(call if_changed,listing)



CLEAN_FILES += vmlinux.s vmlinux.lst



archclean:

	$(Q)$(MAKE) $(clean)=$(boot)



define archhelp

  @echo '* vmlinux.elf		- ELF image with load address 0'

  @echo '  vmlinux.cso		- PathFinder CSO image'

  @echo '* uImage		- Create a bootable image for U-Boot'

endef