Merge branch 'arm-multiplatform-cleanup' of https://git.kernel.org/pub/scm/linux/kernel/git/soc/soc into arm/soc

Now that everything except StrongARM is unified under CONFIG_ARCH_MULTIPLATFORM, the option is rather meaningless in its current form. Rework the Kconfig logic to make this useful again, similar to the way that RISC-V has CONFIG_NONPORTABLE (with the opposite polarity), this now controls the visibility of options that get in the way of building generic kernels, while allowing custom kernels. One side-effect is that 'randconfig' builds now rarely hit strongarm machines, rather than testing them three quarters of the time. * 'arm-multiplatform-cleanup' of https://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: ARM: make ARCH_MULTIPLATFORM user-visible ARM: fix XIP_KERNEL dependencies ARM: Kconfig: clean up platform selection ARM: simplify machdirs/platdirs handling ARM: remove obsolete Makefile.boot infrastructure
2024-11-11 12:28:41 +08:00 · 2022-09-15 22:20:59 +02:00 · 2022-09-15 22:20:59 +02:00 · 8774d33544
commit 8774d33544
parent 0d9787fa27 84fc863606
46 changed files with 181 additions and 242 deletions
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@ -28,7 +28,6 @@ config ARM
 	select ARCH_HAS_GCOV_PROFILE_ALL
 	select ARCH_KEEP_MEMBLOCK
 	select ARCH_MIGHT_HAVE_PC_PARPORT
-	select ARCH_NO_SG_CHAIN if !ARM_HAS_SG_CHAIN
 	select ARCH_OPTIONAL_KERNEL_RWX if ARCH_HAS_STRICT_KERNEL_RWX
 	select ARCH_OPTIONAL_KERNEL_RWX_DEFAULT if CPU_V7
 	select ARCH_SUPPORTS_ATOMIC_RMW
@ -42,6 +41,7 @@ config ARM
 	select ARCH_WANT_LD_ORPHAN_WARN
 	select BINFMT_FLAT_ARGVP_ENVP_ON_STACK
 	select BUILDTIME_TABLE_SORT if MMU
+	select COMMON_CLK if !(ARCH_RPC || ARCH_FOOTBRIDGE)
 	select CLONE_BACKWARDS
 	select CPU_PM if SUSPEND || CPU_IDLE
 	select DCACHE_WORD_ACCESS if HAVE_EFFICIENT_UNALIGNED_ACCESS
@ -110,6 +110,7 @@ config ARM
 	select HAVE_MOD_ARCH_SPECIFIC
 	select HAVE_NMI
 	select HAVE_OPTPROBES if !THUMB2_KERNEL
+	select HAVE_PCI
 	select HAVE_PERF_EVENTS
 	select HAVE_PERF_REGS
 	select HAVE_PERF_USER_STACK_DUMP
@ -126,13 +127,17 @@ config ARM
 	select OF_EARLY_FLATTREE if OF
 	select OLD_SIGACTION
 	select OLD_SIGSUSPEND3
+	select PCI_DOMAINS_GENERIC if PCI
 	select PCI_SYSCALL if PCI
 	select PERF_USE_VMALLOC
 	select RTC_LIB
+	select SPARSE_IRQ if !(ARCH_FOOTBRIDGE || ARCH_RPC)
 	select SYS_SUPPORTS_APM_EMULATION
 	select THREAD_INFO_IN_TASK
+	select TIMER_OF if OF
 	select HAVE_ARCH_VMAP_STACK if MMU && ARM_HAS_GROUP_RELOCS
 	select TRACE_IRQFLAGS_SUPPORT if !CPU_V7M
+	select USE_OF if !(ARCH_FOOTBRIDGE || ARCH_RPC || ARCH_SA1100)
 	# Above selects are sorted alphabetically; please add new ones
 	# according to that.  Thanks.
 	help
@ -154,12 +159,8 @@ config ARM_HAS_GROUP_RELOCS
 	  which is usually sufficient, but not for allyesconfig, so we disable
 	  this feature when doing compile testing.

-config ARM_HAS_SG_CHAIN
-	bool
-
 config ARM_DMA_USE_IOMMU
 	bool
-	select ARM_HAS_SG_CHAIN
 	select NEED_SG_DMA_LENGTH

 if ARM_DMA_USE_IOMMU
@ -245,7 +246,7 @@ config ARCH_MTD_XIP
 config ARM_PATCH_PHYS_VIRT
 	bool "Patch physical to virtual translations at runtime" if EMBEDDED
 	default y
-	depends on !XIP_KERNEL && MMU
+	depends on MMU
 	help
 	  Patch phys-to-virt and virt-to-phys translation functions at
 	  boot and module load time according to the position of the
@ -274,7 +275,7 @@ config NEED_MACH_MEMORY_H

 config PHYS_OFFSET
 	hex "Physical address of main memory" if MMU
-	depends on !ARM_PATCH_PHYS_VIRT
+	depends on !ARM_PATCH_PHYS_VIRT || !AUTO_ZRELADDR
 	default DRAM_BASE if !MMU
 	default 0x00000000 if ARCH_FOOTBRIDGE
 	default 0x10000000 if ARCH_OMAP1 || ARCH_RPC
@ -307,13 +308,8 @@ config MMU
 config ARM_SINGLE_ARMV7M
 	def_bool !MMU
 	select ARM_NVIC
-	select AUTO_ZRELADDR
-	select TIMER_OF
-	select COMMON_CLK
 	select CPU_V7M
 	select NO_IOPORT_MAP
-	select SPARSE_IRQ
-	select USE_OF

 config ARCH_MMAP_RND_BITS_MIN
 	default 8
@ -323,94 +319,31 @@ config ARCH_MMAP_RND_BITS_MAX
 	default 15 if PAGE_OFFSET=0x80000000
 	default 16

-#
-# The "ARM system type" choice list is ordered alphabetically by option
-# text.  Please add new entries in the option alphabetic order.
-#
-choice
-	prompt "ARM system type"
-	depends on MMU
-	default ARCH_MULTIPLATFORM
-
 config ARCH_MULTIPLATFORM
-	bool "Allow multiple platforms to be selected"
-	select ARCH_FLATMEM_ENABLE
-	select ARCH_SPARSEMEM_ENABLE
-	select ARCH_SELECT_MEMORY_MODEL
-	select ARM_HAS_SG_CHAIN
-	select ARM_PATCH_PHYS_VIRT
-	select AUTO_ZRELADDR
-	select TIMER_OF
-	select COMMON_CLK
-	select HAVE_PCI
-	select PCI_DOMAINS_GENERIC if PCI
-	select SPARSE_IRQ
-	select USE_OF
-
-config ARCH_FOOTBRIDGE
-	bool "FootBridge"
-	depends on CPU_LITTLE_ENDIAN
-	depends on ATAGS
-	select CPU_SA110
-	select FOOTBRIDGE
-	select NEED_MACH_MEMORY_H
+	bool "Require kernel to be portable to multiple machines" if EXPERT
+	depends on MMU && !(ARCH_FOOTBRIDGE || ARCH_RPC || ARCH_SA1100)
+	default y
 	help
-	  Support for systems based on the DC21285 companion chip
-	  ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
+	  In general, all Arm machines can be supported in a single
+	  kernel image, covering either Armv4/v5 or Armv6/v7.

-config ARCH_RPC
-	bool "RiscPC"
-	depends on !CC_IS_CLANG && GCC_VERSION < 90100 && GCC_VERSION >= 60000
-	depends on CPU_LITTLE_ENDIAN
-	depends on ATAGS
-	select ARCH_ACORN
-	select ARCH_MAY_HAVE_PC_FDC
-	select ARCH_SPARSEMEM_ENABLE
-	select ARM_HAS_SG_CHAIN
-	select CPU_SA110
-	select FIQ
-	select HAVE_PATA_PLATFORM
-	select ISA_DMA_API
-	select LEGACY_TIMER_TICK
-	select NEED_MACH_IO_H
-	select NEED_MACH_MEMORY_H
-	select NO_IOPORT_MAP
-	help
-	  On the Acorn Risc-PC, Linux can support the internal IDE disk and
-	  CD-ROM interface, serial and parallel port, and the floppy drive.
+	  However, some configuration options require hardcoding machine
+	  specific physical addresses or enable errata workarounds that may
+	  break other machines.

-config ARCH_SA1100
-	bool "SA1100-based"
-	depends on CPU_LITTLE_ENDIAN
-	depends on ATAGS
-	select ARCH_MTD_XIP
-	select ARCH_SPARSEMEM_ENABLE
-	select CLKSRC_MMIO
-	select CLKSRC_PXA
-	select TIMER_OF if OF
-	select COMMON_CLK
-	select CPU_FREQ
-	select CPU_SA1100
-	select GPIOLIB
-	select IRQ_DOMAIN
-	select ISA
-	select NEED_MACH_MEMORY_H
-	select SPARSE_IRQ
-	help
-	  Support for StrongARM 11x0 based boards.
+	  Selecting N here allows using those options, including
+	  DEBUG_UNCOMPRESS, XIP_KERNEL and ZBOOT_ROM. If unsure, say Y.

-endchoice
-
-menu "Multiple platform selection"
-	depends on ARCH_MULTIPLATFORM
+menu "Platform selection"
+	depends on MMU

 comment "CPU Core family selection"

 config ARCH_MULTI_V4
-	bool "ARMv4 based platforms (FA526)"
+	bool "ARMv4 based platforms (FA526, StrongARM)"
 	depends on !ARCH_MULTI_V6_V7
 	select ARCH_MULTI_V4_V5
-	select CPU_FA526
+	select CPU_FA526 if !(CPU_SA110 || CPU_SA1100)

 config ARCH_MULTI_V4T
 	bool "ARMv4T based platforms (ARM720T, ARM920T, ...)"
@ -472,7 +405,6 @@ config ARCH_AIROHA
 	select ARM_GIC_V3
 	select ARM_PSCI
 	select HAVE_ARM_ARCH_TIMER
-	select COMMON_CLK
 	help
 	  Support for Airoha EN7523 SoCs

@ -573,6 +505,8 @@ source "arch/arm/mach-rda/Kconfig"

 source "arch/arm/mach-realtek/Kconfig"

+source "arch/arm/mach-rpc/Kconfig"
+
 source "arch/arm/mach-rockchip/Kconfig"

 source "arch/arm/mach-s3c/Kconfig"
@ -638,7 +572,6 @@ config ARCH_ACORN
 config PLAT_ORION
 	bool
 	select CLKSRC_MMIO
-	select COMMON_CLK
 	select GENERIC_IRQ_CHIP
 	select IRQ_DOMAIN

@ -1049,7 +982,7 @@ config SMP

 config SMP_ON_UP
 	bool "Allow booting SMP kernel on uniprocessor systems"
-	depends on SMP && !XIP_KERNEL && MMU
+	depends on SMP && MMU
 	default y
 	help
 	  SMP kernels contain instructions which fail on non-SMP processors.
@ -1298,7 +1231,7 @@ config THUMB2_KERNEL

 config ARM_PATCH_IDIV
 	bool "Runtime patch udiv/sdiv instructions into __aeabi_{u}idiv()"
-	depends on CPU_32v7 && !XIP_KERNEL
+	depends on CPU_32v7
 	default y
 	help
 	  The ARM compiler inserts calls to __aeabi_idiv() and
@ -1353,13 +1286,13 @@ config OABI_COMPAT
 	  at all). If in doubt say N.

 config ARCH_SELECT_MEMORY_MODEL
-	bool
+	def_bool y

 config ARCH_FLATMEM_ENABLE
-	bool
+	def_bool !(ARCH_RPC || ARCH_SA1100)

 config ARCH_SPARSEMEM_ENABLE
-	bool
+	def_bool !ARCH_FOOTBRIDGE
 	select SPARSEMEM_STATIC if SPARSEMEM

 config HIGHMEM
@ -1683,6 +1616,7 @@ config CMDLINE_EXTEND

 config CMDLINE_FORCE
 	bool "Always use the default kernel command string"
+	depends on !ARCH_MULTIPLATFORM
 	help
 	  Always use the default kernel command string, even if the boot
 	  loader passes other arguments to the kernel.
@ -1693,6 +1627,7 @@ endchoice
 config XIP_KERNEL
 	bool "Kernel Execute-In-Place from ROM"
 	depends on !ARM_LPAE && !ARCH_MULTIPLATFORM
+	depends on !ARM_PATCH_IDIV && !ARM_PATCH_PHYS_VIRT && !SMP_ON_UP
 	help
 	  Execute-In-Place allows the kernel to run from non-volatile storage
 	  directly addressable by the CPU, such as NOR flash. This saves RAM
@ -1767,7 +1702,8 @@ config CRASH_DUMP
 	  For more details see Documentation/admin-guide/kdump/kdump.rst

 config AUTO_ZRELADDR
-	bool "Auto calculation of the decompressed kernel image address"
+	bool "Auto calculation of the decompressed kernel image address" if !ARCH_MULTIPLATFORM
+	default !(ARCH_FOOTBRIDGE || ARCH_RPC || ARCH_SA1100)
 	help
 	  ZRELADDR is the physical address where the decompressed kernel
 	  image will be placed. If AUTO_ZRELADDR is selected, the address
--- a/arch/arm/Kconfig.debug
+++ b/arch/arm/Kconfig.debug
@ -1904,7 +1904,8 @@ config DEBUG_UART_8250_PALMCHIP

 config DEBUG_UNCOMPRESS
 	bool "Enable decompressor debugging via DEBUG_LL output"
-	depends on ARCH_MULTIPLATFORM || PLAT_SAMSUNG || ARM_SINGLE_ARMV7M
+	depends on !ARCH_MULTIPLATFORM
+	depends on !(ARCH_FOOTBRIDGE || ARCH_RPC || ARCH_SA1100)
 	depends on DEBUG_LL && !DEBUG_OMAP2PLUS_UART && \
 		     (!DEBUG_TEGRA_UART || !ZBOOT_ROM) && \
 		     !DEBUG_BRCMSTB_UART && !DEBUG_SEMIHOSTING
@ -1921,9 +1922,8 @@ config DEBUG_UNCOMPRESS

 config UNCOMPRESS_INCLUDE
 	string
-	default "debug/uncompress.h" if ARCH_MULTIPLATFORM || ARCH_MSM || \
-					PLAT_SAMSUNG || ARM_SINGLE_ARMV7M
-	default "mach/uncompress.h"
+	default "mach/uncompress.h" if ARCH_FOOTBRIDGE || ARCH_RPC || ARCH_SA1100
+	default "debug/uncompress.h"

 config EARLY_PRINTK
 	bool "Early printk"
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@ -224,40 +224,24 @@ machine-$(CONFIG_ARCH_ZYNQ)		+= zynq
 machine-$(CONFIG_PLAT_VERSATILE)	+= versatile
 machine-$(CONFIG_PLAT_SPEAR)		+= spear

-# Platform directory name.  This list is sorted alphanumerically
-# by CONFIG_* macro name.
-plat-$(CONFIG_PLAT_ORION)	+= orion
+# legacy platforms provide their own mach/*.h headers globally,
+# these three are mutually exclusive
+machdirs-$(CONFIG_ARCH_FOOTBRIDGE)	+= arch/arm/mach-footbridge
+machdirs-$(CONFIG_ARCH_RPC)		+= arch/arm/mach-rpc
+machdirs-$(CONFIG_ARCH_SA1100)		+= arch/arm/mach-sa1100
+KBUILD_CPPFLAGS += $(patsubst %,-I$(srctree)/%/include,$(machdirs-y))

 # The byte offset of the kernel image in RAM from the start of RAM.
 TEXT_OFFSET := $(textofs-y)

-# The first directory contains additional information for the boot setup code
-ifneq ($(machine-y),)
-MACHINE  := arch/arm/mach-$(word 1,$(machine-y))/
-else
-MACHINE  :=
-endif
-ifeq ($(CONFIG_ARCH_MULTIPLATFORM),y)
-MACHINE  :=
-endif
-
-machdirs := $(patsubst %,arch/arm/mach-%/,$(machine-y))
-platdirs := $(patsubst %,arch/arm/plat-%/,$(sort $(plat-y)))
-
-ifneq ($(CONFIG_ARCH_MULTIPLATFORM),y)
-ifneq ($(CONFIG_ARM_SINGLE_ARMV7M),y)
-KBUILD_CPPFLAGS += $(patsubst %,-I$(srctree)/%include,$(machdirs) $(platdirs))
-endif
-endif
-
 export	TEXT_OFFSET GZFLAGS MMUEXT

 # If we have a machine-specific directory, then include it in the build.
-core-y				+= $(machdirs) $(platdirs)
-
+core-y				+= $(patsubst %,arch/arm/mach-%/,$(machine-y))
 # For cleaning
-core-				+= $(patsubst %,arch/arm/mach-%/, $(machine-))
-core-				+= $(patsubst %,arch/arm/plat-%/, $(plat-))
+core-				+= $(patsubst %,arch/arm/mach-%/,$(machine-))
+
+core-$(CONFIG_PLAT_ORION)	+= arch/arm/plat-orion/

 libs-y				:= arch/arm/lib/ $(libs-y)

@ -310,7 +294,7 @@ bootpImage uImage: zImage
 zImage: Image

 $(BOOT_TARGETS): vmlinux
-	$(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/$@
+	$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
 	@$(kecho) '  Kernel: $(boot)/$@ is ready'

 $(INSTALL_TARGETS): KBUILD_IMAGE = $(boot)/$(patsubst %install,%Image,$@)
@ -324,7 +308,7 @@ ifeq ($(CONFIG_VDSO),y)
 endif

 # My testing targets (bypasses dependencies)
-bp:;	$(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/bootpImage
+bp:;	$(Q)$(MAKE) $(build)=$(boot) $(boot)/bootpImage


 define archhelp
--- a/arch/arm/boot/Makefile
+++ b/arch/arm/boot/Makefile
@ -10,22 +10,16 @@
 #
 # Copyright (C) 1995-2002 Russell King
 #
-
 OBJCOPYFLAGS	:=-O binary -R .comment -S

-ifneq ($(MACHINE),)
-include $(MACHINE)/Makefile.boot
+#   ZRELADDR == virt_to_phys(PAGE_OFFSET + TEXT_OFFSET)
+ifdef CONFIG_PHYS_OFFSET
+add_hex = $(shell printf 0x%x $$(( $(1) + $(2) )) )
+ZRELADDR    := $(call add_hex, $(CONFIG_PHYS_OFFSET), $(TEXT_OFFSET))
 endif

-# Note: the following conditions must always be true:
-#   ZRELADDR == virt_to_phys(PAGE_OFFSET + TEXT_OFFSET)
-#   PARAMS_PHYS must be within 4MB of ZRELADDR
-#   INITRD_PHYS must be in RAM
-ZRELADDR    := $(zreladdr-y)
-PARAMS_PHYS := $(params_phys-y)
-INITRD_PHYS := $(initrd_phys-y)
-
-export ZRELADDR INITRD_PHYS PARAMS_PHYS
+PHYS_OFFSET := $(CONFIG_PHYS_OFFSET)
+export ZRELADDR PARAMS_PHYS PHYS_OFFSET

 targets := Image zImage xipImage bootpImage uImage

@ -90,17 +84,10 @@ $(obj)/uImage:	$(obj)/zImage FORCE
 	@$(check_for_multiple_loadaddr)
 	$(call if_changed,uimage)

-$(obj)/bootp/bootp: $(obj)/zImage initrd FORCE
+$(obj)/bootp/bootp: $(obj)/zImage FORCE
 	$(Q)$(MAKE) $(build)=$(obj)/bootp $@

 $(obj)/bootpImage: $(obj)/bootp/bootp FORCE
 	$(call if_changed,objcopy)

-PHONY += initrd
-initrd:
-	@test "$(INITRD_PHYS)" != "" || \
-	(echo This machine does not support INITRD; exit -1)
-	@test "$(INITRD)" != "" || \
-	(echo You must specify INITRD; exit -1)
-
 subdir-	    := bootp compressed dts
--- a/arch/arm/boot/bootp/Makefile
+++ b/arch/arm/boot/bootp/Makefile
@ -5,9 +5,40 @@
 # This file is included by the global makefile so that you can add your own
 # architecture-specific flags and dependencies.
 #
-
 GCOV_PROFILE	:= n

+ifdef PHYS_OFFSET
+add_hex = $(shell printf 0x%x $$(( $(1) + $(2) )) )
+
+# If PHYS_OFFSET is set, INITRD_PHYS and PARAMS_PHYS can be derived,
+# otherwise they must be passed on the command line.
+#
+# Note: the following conditions must always be true:
+#   PARAMS_PHYS must be within 4MB of ZRELADDR
+#   INITRD_PHYS must be in RAM
+
+PARAMS_PHYS := $(call add_hex, $(PHYS_OFFSET), 0x100)
+
+# guess an initrd location if possible
+initrd_offset-$(CONFIG_ARCH_FOOTBRIDGE)	+= 0x00800000
+initrd_offset-$(CONFIG_ARCH_SA1100)	+= 0x00800000
+initrd_offset-$(CONFIG_ARCH_RPC)	+= 0x08000000
+INITRD_OFFSET := $(initrd_offset-y)
+ifdef INITRD_OFFSET
+INITRD_PHYS := $(call add_hex, $(PHYS_OFFSET), $(INITRD_OFFSET))
+endif
+
+endif
+
+PHONY += initrd
+initrd:
+	@test "$(PARAMS_PHYS)" != "" || \
+	(echo bootpImage: You must specify PHYS_OFFSET of PARAMS_PHYS ; exit -1)
+	@test "$(INITRD_PHYS)" != "" || \
+	(echo bootpImage: You must specify INITRD_OFFSET or INITRD_PHYS ; exit -1)
+	@test "$(INITRD)" != "" || \
+	(echo bootpImage: You must specify INITRD; exit -1)
+
 LDFLAGS_bootp	:= --no-undefined -X \
 		 --defsym initrd_phys=$(INITRD_PHYS) \
 		 --defsym params_phys=$(PARAMS_PHYS) -T
@ -24,6 +55,6 @@ $(obj)/bootp:	$(src)/bootp.lds $(addprefix $(obj)/,init.o kernel.o initrd.o) FOR

 $(obj)/kernel.o: arch/arm/boot/zImage FORCE

-$(obj)/initrd.o: $(INITRD) FORCE
+$(obj)/initrd.o: initrd $(INITRD) FORCE

 PHONY += $(INITRD)
--- a/arch/arm/configs/assabet_defconfig
+++ b/arch/arm/configs/assabet_defconfig
@ -1,6 +1,8 @@
 CONFIG_SYSVIPC=y
 CONFIG_LOG_BUF_SHIFT=14
 CONFIG_BLK_DEV_INITRD=y
+CONFIG_ARCH_MULTI_V4=y
+# CONFIG_ARCH_MULTI_V7 is not set
 CONFIG_ARCH_SA1100=y
 CONFIG_SA1100_ASSABET=y
 CONFIG_CMDLINE="mem=32M console=ttySA0,38400n8 initrd=0xc0800000,3M root=/dev/ram"
--- a/arch/arm/configs/badge4_defconfig
+++ b/arch/arm/configs/badge4_defconfig
@ -1,5 +1,7 @@
 CONFIG_LOG_BUF_SHIFT=14
 CONFIG_EXPERT=y
+CONFIG_ARCH_MULTI_V4=y
+# CONFIG_ARCH_MULTI_V7 is not set
 CONFIG_ARCH_SA1100=y
 CONFIG_SA1100_BADGE4=y
 CONFIG_UNUSED_BOARD_FILES=y
--- a/arch/arm/configs/cerfcube_defconfig
+++ b/arch/arm/configs/cerfcube_defconfig
@ -1,6 +1,8 @@
 CONFIG_SYSVIPC=y
 CONFIG_BSD_PROCESS_ACCT=y
 CONFIG_LOG_BUF_SHIFT=14
+CONFIG_ARCH_MULTI_V4=y
+# CONFIG_ARCH_MULTI_V7 is not set
 CONFIG_ARCH_SA1100=y
 CONFIG_SA1100_CERF=y
 CONFIG_SA1100_CERF_FLASH_16MB=y
--- a/arch/arm/configs/collie_defconfig
+++ b/arch/arm/configs/collie_defconfig
@ -5,6 +5,8 @@ CONFIG_BLK_DEV_INITRD=y
 CONFIG_EXPERT=y
 # CONFIG_BASE_FULL is not set
 # CONFIG_EPOLL is not set
+CONFIG_ARCH_MULTI_V4=y
+# CONFIG_ARCH_MULTI_V7 is not set
 CONFIG_ARCH_SA1100=y
 CONFIG_SA1100_COLLIE=y
 CONFIG_CMDLINE="noinitrd root=/dev/mtdblock2 rootfstype=jffs2 fbcon=rotate:1"
--- a/arch/arm/configs/footbridge_defconfig
+++ b/arch/arm/configs/footbridge_defconfig
@ -4,6 +4,8 @@ CONFIG_LOG_BUF_SHIFT=14
 CONFIG_BLK_DEV_INITRD=y
 CONFIG_EXPERT=y
 # CONFIG_HOTPLUG is not set
+CONFIG_ARCH_MULTI_V4=y
+# CONFIG_ARCH_MULTI_V7 is not set
 CONFIG_ARCH_FOOTBRIDGE=y
 CONFIG_ARCH_EBSA285_HOST=y
 CONFIG_ARCH_NETWINDER=y
--- a/arch/arm/configs/h3600_defconfig
+++ b/arch/arm/configs/h3600_defconfig
@ -4,6 +4,8 @@ CONFIG_HIGH_RES_TIMERS=y
 CONFIG_PREEMPT=y
 CONFIG_LOG_BUF_SHIFT=14
 CONFIG_BLK_DEV_INITRD=y
+CONFIG_ARCH_MULTI_V4=y
+# CONFIG_ARCH_MULTI_V7 is not set
 CONFIG_ARCH_SA1100=y
 CONFIG_SA1100_H3600=y
 # CONFIG_CPU_FREQ_STAT is not set
--- a/arch/arm/configs/hackkit_defconfig
+++ b/arch/arm/configs/hackkit_defconfig
@ -1,6 +1,8 @@
 CONFIG_SYSVIPC=y
 CONFIG_LOG_BUF_SHIFT=14
 CONFIG_BLK_DEV_INITRD=y
+CONFIG_ARCH_MULTI_V4=y
+# CONFIG_ARCH_MULTI_V7 is not set
 CONFIG_ARCH_SA1100=y
 CONFIG_SA1100_HACKKIT=y
 CONFIG_UNUSED_BOARD_FILES=y
--- a/arch/arm/configs/jornada720_defconfig
+++ b/arch/arm/configs/jornada720_defconfig
@ -1,6 +1,8 @@
 CONFIG_SYSVIPC=y
 CONFIG_LOG_BUF_SHIFT=14
 CONFIG_SYSFS_DEPRECATED_V2=y
+CONFIG_ARCH_MULTI_V4=y
+# CONFIG_ARCH_MULTI_V7 is not set
 CONFIG_ARCH_SA1100=y
 CONFIG_SA1100_JORNADA720=y
 CONFIG_SA1100_JORNADA720_SSP=y
--- a/arch/arm/configs/lart_defconfig
+++ b/arch/arm/configs/lart_defconfig
@ -1,6 +1,8 @@
 CONFIG_SYSVIPC=y
 CONFIG_LOG_BUF_SHIFT=14
 CONFIG_BLK_DEV_INITRD=y
+CONFIG_ARCH_MULTI_V4=y
+# CONFIG_ARCH_MULTI_V7 is not set
 CONFIG_ARCH_SA1100=y
 CONFIG_SA1100_LART=y
 CONFIG_UNUSED_BOARD_FILES=y
--- a/arch/arm/configs/neponset_defconfig
+++ b/arch/arm/configs/neponset_defconfig
@ -1,6 +1,8 @@
 CONFIG_SYSVIPC=y
 CONFIG_LOG_BUF_SHIFT=14
 CONFIG_BLK_DEV_INITRD=y
+CONFIG_ARCH_MULTI_V4=y
+# CONFIG_ARCH_MULTI_V7 is not set
 CONFIG_ARCH_SA1100=y
 CONFIG_SA1100_ASSABET=y
 CONFIG_ASSABET_NEPONSET=y
--- a/arch/arm/configs/netwinder_defconfig
+++ b/arch/arm/configs/netwinder_defconfig
@ -1,5 +1,7 @@
 CONFIG_SYSVIPC=y
 CONFIG_LOG_BUF_SHIFT=14
+CONFIG_ARCH_MULTI_V4=y
+# CONFIG_ARCH_MULTI_V7 is not set
 CONFIG_ARCH_FOOTBRIDGE=y
 CONFIG_ARCH_NETWINDER=y
 CONFIG_DEPRECATED_PARAM_STRUCT=y
--- a/arch/arm/configs/pleb_defconfig
+++ b/arch/arm/configs/pleb_defconfig
@ -4,6 +4,8 @@ CONFIG_BLK_DEV_INITRD=y
 CONFIG_EXPERT=y
 # CONFIG_HOTPLUG is not set
 # CONFIG_SHMEM is not set
+CONFIG_ARCH_MULTI_V4=y
+# CONFIG_ARCH_MULTI_V7 is not set
 CONFIG_ARCH_SA1100=y
 CONFIG_SA1100_PLEB=y
 CONFIG_UNUSED_BOARD_FILES=y
--- a/arch/arm/configs/rpc_defconfig
+++ b/arch/arm/configs/rpc_defconfig
@ -4,6 +4,8 @@ CONFIG_LOG_BUF_SHIFT=14
 CONFIG_BLK_DEV_INITRD=y
 CONFIG_MODULES=y
 CONFIG_MODULE_UNLOAD=y
+CONFIG_ARCH_MULTI_V4=y
+# CONFIG_ARCH_MULTI_V7 is not set
 CONFIG_ARCH_RPC=y
 CONFIG_CPU_SA110=y
 CONFIG_FPE_NWFPE=y
--- a/arch/arm/configs/shannon_defconfig
+++ b/arch/arm/configs/shannon_defconfig
@ -1,6 +1,8 @@
 CONFIG_SYSVIPC=y
 CONFIG_LOG_BUF_SHIFT=14
 CONFIG_BLK_DEV_INITRD=y
+CONFIG_ARCH_MULTI_V4=y
+# CONFIG_ARCH_MULTI_V7 is not set
 CONFIG_ARCH_SA1100=y
 CONFIG_SA1100_SHANNON=y
 CONFIG_UNUSED_BOARD_FILES=y
--- a/arch/arm/configs/simpad_defconfig
+++ b/arch/arm/configs/simpad_defconfig
@ -5,6 +5,8 @@ CONFIG_LOG_BUF_SHIFT=14
 CONFIG_EXPERT=y
 CONFIG_KALLSYMS_ALL=y
 CONFIG_KALLSYMS_EXTRA_PASS=y
+CONFIG_ARCH_MULTI_V4=y
+# CONFIG_ARCH_MULTI_V7 is not set
 CONFIG_ARCH_SA1100=y
 CONFIG_SA1100_SIMPAD=y
 CONFIG_UNUSED_BOARD_FILES=y
--- a/arch/arm/kernel/devtree.c
+++ b/arch/arm/kernel/devtree.c
@ -194,14 +194,12 @@ const struct machine_desc * __init setup_machine_fdt(void *dt_virt)
 {
 	const struct machine_desc *mdesc, *mdesc_best = NULL;

-#if defined(CONFIG_ARCH_MULTIPLATFORM) || defined(CONFIG_ARM_SINGLE_ARMV7M)
 	DT_MACHINE_START(GENERIC_DT, "Generic DT based system")
 		.l2c_aux_val = 0x0,
 		.l2c_aux_mask = ~0x0,
 	MACHINE_END

 	mdesc_best = &__mach_desc_GENERIC_DT;
-#endif

 	if (!dt_virt || !early_init_dt_verify(dt_virt))
 		return NULL;
--- a/arch/arm/mach-at91/Makefile.boot
+++ b/arch/arm/mach-at91/Makefile.boot
@ -1,4 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0-only
-# Empty file waiting for deletion once Makefile.boot isn't needed any more.
-# Patch waits for application at
-# https://www.arm.linux.org.uk/developer/patches/viewpatch.php?id=7889/1 .
--- a/arch/arm/mach-davinci/Makefile.boot
+++ b/arch/arm/mach-davinci/Makefile.boot
@ -1,8 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-zreladdr-$(CONFIG_ARCH_DAVINCI_DA8XX)		+= 0xc0008000
-params_phys-$(CONFIG_ARCH_DAVINCI_DA8XX)	:= 0xc0000100
-initrd_phys-$(CONFIG_ARCH_DAVINCI_DA8XX)	:= 0xc0800000
-
-zreladdr-$(CONFIG_ARCH_DAVINCI_DMx)		+= 0x80008000
-params_phys-$(CONFIG_ARCH_DAVINCI_DMx)		:= 0x80000100
-initrd_phys-$(CONFIG_ARCH_DAVINCI_DMx)		:= 0x80800000
--- a/arch/arm/mach-dove/Makefile
+++ b/arch/arm/mach-dove/Makefile
@ -1,5 +1,5 @@
 # SPDX-License-Identifier: GPL-2.0
-ccflags-$(CONFIG_ARCH_MULTIPLATFORM) := -I$(srctree)/arch/arm/plat-orion/include
+ccflags-y := -I$(srctree)/arch/arm/plat-orion/include

 obj-y				+= common.o
 obj-$(CONFIG_DOVE_LEGACY)	+= irq.o mpp.o
--- a/arch/arm/mach-dove/Makefile.boot
+++ b/arch/arm/mach-dove/Makefile.boot
@ -1,4 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0-only
-   zreladdr-y	+= 0x00008000
-params_phys-y	:= 0x00000100
-initrd_phys-y	:= 0x00800000
--- a/arch/arm/mach-ep93xx/Makefile.boot
+++ b/arch/arm/mach-ep93xx/Makefile.boot
@ -1,2 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0-only
-# Empty file waiting for deletion once Makefile.boot isn't needed any more.
--- a/arch/arm/mach-footbridge/Kconfig
+++ b/arch/arm/mach-footbridge/Kconfig
@ -1,7 +1,20 @@
 # SPDX-License-Identifier: GPL-2.0-only
-if ARCH_FOOTBRIDGE
+menuconfig ARCH_FOOTBRIDGE
+	bool "FootBridge Implementations"
+	depends on ARCH_MULTI_V4 && !(ARCH_MULTI_V4T || ARCH_MULTI_V5)
+	depends on !(ARCH_MOXART || ARCH_GEMINI || ARCH_SA1100)
+	depends on ATAGS
+	depends on CPU_LITTLE_ENDIAN
+	depends on MMU
+	select ARCH_NO_SG_CHAIN
+	select CPU_SA110
+	select FOOTBRIDGE
+	select NEED_MACH_MEMORY_H
+	help
+	  Support for systems based on the DC21285 companion chip
+	  ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.

-menu "Footbridge Implementations"
+if ARCH_FOOTBRIDGE

 config ARCH_CATS
 	bool "CATS"
@ -41,8 +54,6 @@ config ARCH_NETWINDER

 	  Saying N will reduce the size of the Footbridge kernel.

-endmenu
-
 # Footbridge support
 config FOOTBRIDGE
 	def_bool y
--- a/arch/arm/mach-footbridge/Makefile.boot
+++ b/arch/arm/mach-footbridge/Makefile.boot
@ -1,5 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0-only
-   zreladdr-y	+= 0x00008000
-params_phys-y	:= 0x00000100
-initrd_phys-y	:= 0x00800000
-
--- a/arch/arm/mach-imx/Kconfig
+++ b/arch/arm/mach-imx/Kconfig
@ -1,7 +1,7 @@
 # SPDX-License-Identifier: GPL-2.0-only
 menuconfig ARCH_MXC
 	bool "Freescale i.MX family"
-	depends on (ARCH_MULTI_V4_V5 && CPU_LITTLE_ENDIAN) || \
+	depends on ((ARCH_MULTI_V4T || ARCH_MULTI_V5) && CPU_LITTLE_ENDIAN) || \
 		ARCH_MULTI_V6_V7 || ARM_SINGLE_ARMV7M
 	select CLKSRC_IMX_GPT
 	select GENERIC_IRQ_CHIP
--- a/arch/arm/mach-imx/Makefile.boot
+++ b/arch/arm/mach-imx/Makefile.boot
--- a/arch/arm/mach-iop32x/Makefile.boot
+++ b/arch/arm/mach-iop32x/Makefile.boot
@ -1,4 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0-only
-   zreladdr-y	+= 0xa0008000
-params_phys-y	:= 0xa0000100
-initrd_phys-y	:= 0xa0800000
--- a/arch/arm/mach-lpc18xx/Makefile.boot
+++ b/arch/arm/mach-lpc18xx/Makefile.boot
@ -1,4 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0-only
-# Empty file waiting for deletion once Makefile.boot isn't needed any more.
-# Patch waits for application at
-# http://www.arm.linux.org.uk/developer/patches/viewpatch.php?id=7889/1 .
--- a/arch/arm/mach-lpc32xx/Makefile.boot
+++ b/arch/arm/mach-lpc32xx/Makefile.boot
@ -1,4 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0-only
-   zreladdr-y	+= 0x80008000
-params_phys-y	:= 0x80000100
-initrd_phys-y	:= 0x82000000
--- a/arch/arm/mach-mv78xx0/Makefile
+++ b/arch/arm/mach-mv78xx0/Makefile
@ -1,5 +1,5 @@
 # SPDX-License-Identifier: GPL-2.0
-ccflags-$(CONFIG_ARCH_MULTIPLATFORM) := -I$(srctree)/arch/arm/plat-orion/include
+ccflags-y := -I$(srctree)/arch/arm/plat-orion/include

 obj-y				+= common.o mpp.o irq.o pcie.o
 obj-$(CONFIG_MACH_DB78X00_BP)	+= db78x00-bp-setup.o
--- a/arch/arm/mach-mvebu/Makefile
+++ b/arch/arm/mach-mvebu/Makefile
@ -1,5 +1,5 @@
 # SPDX-License-Identifier: GPL-2.0
-ccflags-$(CONFIG_ARCH_MULTIPLATFORM) := -I$(srctree)/arch/arm/plat-orion/include
+ccflags-y := -I$(srctree)/arch/arm/plat-orion/include

 AFLAGS_coherency_ll.o		:= -Wa,-march=armv7-a
 CFLAGS_pmsu.o			:= -march=armv7-a
--- a/arch/arm/mach-nspire/Kconfig
+++ b/arch/arm/mach-nspire/Kconfig
@ -1,7 +1,7 @@
 # SPDX-License-Identifier: GPL-2.0-only
 config ARCH_NSPIRE
 	bool "TI-NSPIRE based"
-	depends on ARCH_MULTI_V4_V5
+	depends on ARCH_MULTI_V4T
 	depends on CPU_LITTLE_ENDIAN
 	select CPU_ARM926T
 	select GENERIC_IRQ_CHIP
--- a/arch/arm/mach-omap1/Makefile.boot
+++ b/arch/arm/mach-omap1/Makefile.boot
@ -1,4 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0-only
-   zreladdr-y		+= 0x10008000
-params_phys-y		:= 0x10000100
-initrd_phys-y		:= 0x10800000
--- a/arch/arm/mach-orion5x/Makefile
+++ b/arch/arm/mach-orion5x/Makefile
@ -1,5 +1,5 @@
 # SPDX-License-Identifier: GPL-2.0
-ccflags-$(CONFIG_ARCH_MULTIPLATFORM) := -I$(srctree)/arch/arm/plat-orion/include
+ccflags-y := -I$(srctree)/arch/arm/plat-orion/include

 obj-y				+= common.o pci.o irq.o mpp.o
 obj-$(CONFIG_MACH_DB88F5281)	+= db88f5281-setup.o
--- a/arch/arm/mach-rpc/Kconfig
+++ b/arch/arm/mach-rpc/Kconfig
@ -0,0 +1,21 @@
+config ARCH_RPC
+	bool "RiscPC"
+	depends on ARCH_MULTI_V4 && !(ARCH_MULTI_V4T || ARCH_MULTI_V5)
+	depends on !(ARCH_FOOTBRIDGE || ARCH_SA1100 || ARCH_MOXART || ARCH_GEMINI)
+	depends on !CC_IS_CLANG && GCC_VERSION < 90100 && GCC_VERSION >= 60000
+	depends on CPU_LITTLE_ENDIAN
+	depends on ATAGS
+	depends on MMU
+	select ARCH_ACORN
+	select ARCH_MAY_HAVE_PC_FDC
+	select CPU_SA110
+	select FIQ
+	select HAVE_PATA_PLATFORM
+	select ISA_DMA_API
+	select LEGACY_TIMER_TICK
+	select NEED_MACH_IO_H
+	select NEED_MACH_MEMORY_H
+	select NO_IOPORT_MAP
+	help
+	  On the Acorn Risc-PC, Linux can support the internal IDE disk and
+	  CD-ROM interface, serial and parallel port, and the floppy drive.
--- a/arch/arm/mach-rpc/Makefile.boot
+++ b/arch/arm/mach-rpc/Makefile.boot
@ -1,5 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0-only
-   zreladdr-y	+= 0x10008000
-params_phys-y	:= 0x10000100
-initrd_phys-y	:= 0x18000000
-
--- a/arch/arm/mach-s3c/Makefile.boot
+++ b/arch/arm/mach-s3c/Makefile.boot
@ -1,9 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-
-ifeq ($(CONFIG_PM_H1940),y)
-	zreladdr-y	+= 0x30108000
-	params_phys-y	:= 0x30100100
-else
-	zreladdr-y	+= 0x30008000
-	params_phys-y	:= 0x30000100
-endif
--- a/arch/arm/mach-sa1100/Kconfig
+++ b/arch/arm/mach-sa1100/Kconfig
@ -1,7 +1,25 @@
 # SPDX-License-Identifier: GPL-2.0-only
-if ARCH_SA1100
+menuconfig ARCH_SA1100
+	bool "SA11x0 Implementations"
+	depends on ARCH_MULTI_V4 && !(ARCH_MULTI_V4T || ARCH_MULTI_V5)
+	depends on !(ARCH_MOXART || ARCH_GEMINI)
+	depends on ATAGS
+	depends on CPU_LITTLE_ENDIAN
+	depends on MMU
+	select ARCH_NO_SG_CHAIN
+	select ARCH_MTD_XIP
+	select CLKSRC_MMIO
+	select CLKSRC_PXA
+	select CPU_FREQ
+	select CPU_SA1100
+	select GPIOLIB
+	select IRQ_DOMAIN
+	select ISA
+	select NEED_MACH_MEMORY_H
+	help
+	  Support for StrongARM 11x0 based boards.

-menu "SA11x0 Implementations"
+if ARCH_SA1100

 config SA1100_ASSABET
 	bool "Assabet"
@ -179,7 +197,4 @@ config SA1100_SSP
 	  This isn't for audio support, but for attached sensors and
 	  other devices, eg for BadgePAD 4 sensor support.

-endmenu
-
 endif
-
--- a/arch/arm/mach-sa1100/Makefile.boot
+++ b/arch/arm/mach-sa1100/Makefile.boot
@ -1,9 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0-only
-ifeq ($(CONFIG_SA1111),y)
-   zreladdr-y	+= 0xc0208000
-else
-   zreladdr-y	+= 0xc0008000
-endif
-params_phys-y	:= 0xc0000100
-initrd_phys-y	:= 0xc0800000
-
--- a/arch/arm/mach-stm32/Makefile.boot
+++ b/arch/arm/mach-stm32/Makefile.boot
@ -1,4 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0-only
-# Empty file waiting for deletion once Makefile.boot isn't needed any more.
-# Patch waits for application at
-# https://www.arm.linux.org.uk/developer/patches/viewpatch.php?id=7889/1 .
--- a/arch/arm/mach-versatile/Makefile.boot
+++ b/arch/arm/mach-versatile/Makefile.boot
@ -1,4 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0-only
-# Empty file waiting for deletion once Makefile.boot isn't needed any more.
-# Patch waits for application at
-# http://www.arm.linux.org.uk/developer/patches/viewpatch.php?id=7889/1 .
--- a/arch/arm/mach-vt8500/Makefile.boot
+++ b/arch/arm/mach-vt8500/Makefile.boot
@ -1,4 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0-only
-   zreladdr-y	+= 0x00008000
-params_phys-y	:= 0x00000100
-initrd_phys-y	:= 0x01000000