From 92481c7d14b8030418f00c4b4ec65556565d892d Mon Sep 17 00:00:00 2001
From: Arnd Bergmann
Date: Wed, 27 Jul 2022 09:26:45 +0200
Subject: ARM: remove obsolete Makefile.boot infrastructure

There are a number of old Makefile.boot files that remain from the
multiplatform conversion, and three that are still in use.

These provide the "ZRELADDR", "PARAMS_PHYS" and "INITRD_PHYS" values
that are platform specific. It turns out that we can generally just
derive this from information that is available elsewhere:

- ZRELADDR is normally detected at runtime with the
  CONFIG_AUTO_ZRELADDR flag, but also needed to be passed to
  for 'make uImage'. In a multiplatform kernel, one always has
  to pass this as the $(LOADADDR) variable, but in the StrongARM
  kernels we can derive it from the sum of $(CONFIG_PHYS_OFFSET)
  and $(TEXT_OFFSET) that are already known.

- PARAMS_PHYS and INITRD_PHYS are only used for bootpImage, which
  in turn is only used for the pre-ATAGS 'param_struct' based boot
  interface on StrongARM based machines with old boot loaders.
  They can both be derived from CONFIG_PHYS_OFFSET and a machine
  specific offset for the initrd, so all of the logic for these
  can be part of arch/arm/boot/bootp/Makefile.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 arch/arm/Kconfig                       |  2 +-
 arch/arm/Makefile                      |  4 ++--
 arch/arm/boot/Makefile                 | 27 +++++++-------------------
 arch/arm/boot/bootp/Makefile           | 35 ++++++++++++++++++++++++++++++++--
 arch/arm/mach-at91/Makefile.boot       |  4 ----
 arch/arm/mach-davinci/Makefile.boot    |  8 --------
 arch/arm/mach-dove/Makefile.boot       |  4 ----
 arch/arm/mach-ep93xx/Makefile.boot     |  2 --
 arch/arm/mach-footbridge/Makefile.boot |  5 -----
 arch/arm/mach-imx/Makefile.boot        |  0
 arch/arm/mach-iop32x/Makefile.boot     |  4 ----
 arch/arm/mach-lpc18xx/Makefile.boot    |  4 ----
 arch/arm/mach-lpc32xx/Makefile.boot    |  4 ----
 arch/arm/mach-omap1/Makefile.boot      |  4 ----
 arch/arm/mach-rpc/Makefile.boot        |  5 -----
 arch/arm/mach-s3c/Makefile.boot        |  9 ---------
 arch/arm/mach-sa1100/Makefile.boot     |  9 ---------
 arch/arm/mach-stm32/Makefile.boot      |  4 ----
 arch/arm/mach-versatile/Makefile.boot  |  4 ----
 arch/arm/mach-vt8500/Makefile.boot     |  4 ----
 20 files changed, 43 insertions(+), 99 deletions(-)
 delete mode 100644 arch/arm/mach-at91/Makefile.boot
 delete mode 100644 arch/arm/mach-davinci/Makefile.boot
 delete mode 100644 arch/arm/mach-dove/Makefile.boot
 delete mode 100644 arch/arm/mach-ep93xx/Makefile.boot
 delete mode 100644 arch/arm/mach-footbridge/Makefile.boot
 delete mode 100644 arch/arm/mach-imx/Makefile.boot
 delete mode 100644 arch/arm/mach-iop32x/Makefile.boot
 delete mode 100644 arch/arm/mach-lpc18xx/Makefile.boot
 delete mode 100644 arch/arm/mach-lpc32xx/Makefile.boot
 delete mode 100644 arch/arm/mach-omap1/Makefile.boot
 delete mode 100644 arch/arm/mach-rpc/Makefile.boot
 delete mode 100644 arch/arm/mach-s3c/Makefile.boot
 delete mode 100644 arch/arm/mach-sa1100/Makefile.boot
 delete mode 100644 arch/arm/mach-stm32/Makefile.boot
 delete mode 100644 arch/arm/mach-versatile/Makefile.boot
 delete mode 100644 arch/arm/mach-vt8500/Makefile.boot

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 87badeae3181..6894b4758bfb 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -274,7 +274,7 @@ 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
diff --git a/arch/arm/Makefile b/arch/arm/Makefile
index 56f655deebb1..369490d5f18a 100644
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@@ -310,7 +310,7 @@ 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,$@)
@@ -324,7 +324,7 @@ ifeq ($(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
diff --git a/arch/arm/boot/Makefile b/arch/arm/boot/Makefile
index 54a09f9464fb..abd6a2889fd0 100644
--- 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
-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)
+ifdef CONFIG_PHYS_OFFSET
+add_hex = $(shell printf 0x%x $$(( $(1) + $(2) )) )
+ZRELADDR    := $(call add_hex, $(CONFIG_PHYS_OFFSET), $(TEXT_OFFSET))
+endif
 
-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
diff --git a/arch/arm/boot/bootp/Makefile b/arch/arm/boot/bootp/Makefile
index 981a8d03f064..a2934e6fd89a 100644
--- 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 += $(INITRD)
diff --git a/arch/arm/mach-at91/Makefile.boot b/arch/arm/mach-at91/Makefile.boot
deleted file mode 100644
index 5dde7328a7a9..000000000000
--- a/arch/arm/mach-at91/Makefile.boot
+++ /dev/null
@@ -1,4 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0-only
-# Empty file waiting for deletion once Makefile.boot isn't needed any more.
-# Patch waits for application at
-# https://www.arm.linux.org.uk/developer/patches/viewpatch.php?id=7889/1 .
diff --git a/arch/arm/mach-davinci/Makefile.boot b/arch/arm/mach-davinci/Makefile.boot
deleted file mode 100644
index d36b251f325b..000000000000
--- a/arch/arm/mach-davinci/Makefile.boot
+++ /dev/null
@@ -1,8 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-zreladdr-$(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
diff --git a/arch/arm/mach-dove/Makefile.boot b/arch/arm/mach-dove/Makefile.boot
deleted file mode 100644
index e4dd1d26038f..000000000000
--- a/arch/arm/mach-dove/Makefile.boot
+++ /dev/null
@@ -1,4 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0-only
-   zreladdr-y	+= 0x00008000
-params_phys-y	:= 0x00000100
-initrd_phys-y	:= 0x00800000
diff --git a/arch/arm/mach-ep93xx/Makefile.boot b/arch/arm/mach-ep93xx/Makefile.boot
deleted file mode 100644
index 4c0a039a5027..000000000000
--- a/arch/arm/mach-ep93xx/Makefile.boot
+++ /dev/null
@@ -1,2 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0-only
-# Empty file waiting for deletion once Makefile.boot isn't needed any more.
diff --git a/arch/arm/mach-footbridge/Makefile.boot b/arch/arm/mach-footbridge/Makefile.boot
deleted file mode 100644
index e4313e912cac..000000000000
--- a/arch/arm/mach-footbridge/Makefile.boot
+++ /dev/null
@@ -1,5 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0-only
-   zreladdr-y	+= 0x00008000
-params_phys-y	:= 0x00000100
-initrd_phys-y	:= 0x00800000
-
diff --git a/arch/arm/mach-imx/Makefile.boot b/arch/arm/mach-imx/Makefile.boot
deleted file mode 100644
index e69de29bb2d1..000000000000
diff --git a/arch/arm/mach-iop32x/Makefile.boot b/arch/arm/mach-iop32x/Makefile.boot
deleted file mode 100644
index 5c3af01c4000..000000000000
--- a/arch/arm/mach-iop32x/Makefile.boot
+++ /dev/null
@@ -1,4 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0-only
-   zreladdr-y	+= 0xa0008000
-params_phys-y	:= 0xa0000100
-initrd_phys-y	:= 0xa0800000
diff --git a/arch/arm/mach-lpc18xx/Makefile.boot b/arch/arm/mach-lpc18xx/Makefile.boot
deleted file mode 100644
index cec195d4fcba..000000000000
--- a/arch/arm/mach-lpc18xx/Makefile.boot
+++ /dev/null
@@ -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 .
diff --git a/arch/arm/mach-lpc32xx/Makefile.boot b/arch/arm/mach-lpc32xx/Makefile.boot
deleted file mode 100644
index 37d09ddb27f8..000000000000
--- a/arch/arm/mach-lpc32xx/Makefile.boot
+++ /dev/null
@@ -1,4 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0-only
-   zreladdr-y	+= 0x80008000
-params_phys-y	:= 0x80000100
-initrd_phys-y	:= 0x82000000
diff --git a/arch/arm/mach-omap1/Makefile.boot b/arch/arm/mach-omap1/Makefile.boot
deleted file mode 100644
index 2c771515a606..000000000000
--- a/arch/arm/mach-omap1/Makefile.boot
+++ /dev/null
@@ -1,4 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0-only
-   zreladdr-y		+= 0x10008000
-params_phys-y		:= 0x10000100
-initrd_phys-y		:= 0x10800000
diff --git a/arch/arm/mach-rpc/Makefile.boot b/arch/arm/mach-rpc/Makefile.boot
deleted file mode 100644
index 0ed8e8fbde99..000000000000
--- a/arch/arm/mach-rpc/Makefile.boot
+++ /dev/null
@@ -1,5 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0-only
-   zreladdr-y	+= 0x10008000
-params_phys-y	:= 0x10000100
-initrd_phys-y	:= 0x18000000
-
diff --git a/arch/arm/mach-s3c/Makefile.boot b/arch/arm/mach-s3c/Makefile.boot
deleted file mode 100644
index 7f19e226035e..000000000000
--- a/arch/arm/mach-s3c/Makefile.boot
+++ /dev/null
@@ -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
diff --git a/arch/arm/mach-sa1100/Makefile.boot b/arch/arm/mach-sa1100/Makefile.boot
deleted file mode 100644
index 9d8246f2cab4..000000000000
--- a/arch/arm/mach-sa1100/Makefile.boot
+++ /dev/null
@@ -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
-
diff --git a/arch/arm/mach-stm32/Makefile.boot b/arch/arm/mach-stm32/Makefile.boot
deleted file mode 100644
index 5dde7328a7a9..000000000000
--- a/arch/arm/mach-stm32/Makefile.boot
+++ /dev/null
@@ -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 .
diff --git a/arch/arm/mach-versatile/Makefile.boot b/arch/arm/mach-versatile/Makefile.boot
deleted file mode 100644
index cec195d4fcba..000000000000
--- a/arch/arm/mach-versatile/Makefile.boot
+++ /dev/null
@@ -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 .
diff --git a/arch/arm/mach-vt8500/Makefile.boot b/arch/arm/mach-vt8500/Makefile.boot
deleted file mode 100644
index 883985f4b6c1..000000000000
--- a/arch/arm/mach-vt8500/Makefile.boot
+++ /dev/null
@@ -1,4 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0-only
-   zreladdr-y	+= 0x00008000
-params_phys-y	:= 0x00000100
-initrd_phys-y	:= 0x01000000
-- 
cgit v1.2.3


From 8c7d29a75397198154f66541c2af18a8feccac42 Mon Sep 17 00:00:00 2001
From: Arnd Bergmann
Date: Wed, 27 Jul 2022 11:53:02 +0200
Subject: ARM: simplify machdirs/platdirs handling

There is only one plat-* directory left, and the MACHINE variable is
only used for the mach/*.h header path.

Simplify this by removing the checks for ARCH_MULTIPLATFORM and
ARM_SINGLE_ARMV7M, and just adding the include directories for the
remaining three platforms manually.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 arch/arm/Makefile | 36 ++++++++++--------------------------
 1 file changed, 10 insertions(+), 26 deletions(-)

diff --git a/arch/arm/Makefile b/arch/arm/Makefile
index 369490d5f18a..2623d6e25bdb 100644
--- 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)
 
-- 
cgit v1.2.3


From 6fd09c9afa49b343d17cecedd7879d097f37f2a9 Mon Sep 17 00:00:00 2001
From: Arnd Bergmann
Date: Tue, 26 Jul 2022 14:16:37 +0200
Subject: ARM: Kconfig: clean up platform selection

The top-level platform selection is mostly meaningless these days after
almost everything is sorted below the CONFIG_ARCH_MULTIPLATFORM, with
the only exception being the 20+ year old StrongARM based machines.

Make this more consistent by removing the entire choice statement and
moving the StrongARM specific options into regular platform specific
Kconfig files.

The three platforms (footbridge, rpc and sa1100) are still mutually
exclusive and cannot coexist with other ARMv4/v5 machines, but since
there are only three of them and we will not add more, this can be
expressed using Kconfig 'depends on' statements.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 arch/arm/Kconfig                      | 114 ++++++----------------------------
 arch/arm/Kconfig.debug                |   7 +--
 arch/arm/configs/assabet_defconfig    |   2 +
 arch/arm/configs/badge4_defconfig     |   2 +
 arch/arm/configs/cerfcube_defconfig   |   2 +
 arch/arm/configs/collie_defconfig     |   2 +
 arch/arm/configs/footbridge_defconfig |   2 +
 arch/arm/configs/h3600_defconfig      |   2 +
 arch/arm/configs/hackkit_defconfig    |   2 +
 arch/arm/configs/jornada720_defconfig |   2 +
 arch/arm/configs/lart_defconfig       |   2 +
 arch/arm/configs/neponset_defconfig   |   2 +
 arch/arm/configs/netwinder_defconfig  |   2 +
 arch/arm/configs/pleb_defconfig       |   2 +
 arch/arm/configs/rpc_defconfig        |   2 +
 arch/arm/configs/shannon_defconfig    |   2 +
 arch/arm/configs/simpad_defconfig     |   2 +
 arch/arm/mach-footbridge/Kconfig      |  19 ++++--
 arch/arm/mach-imx/Kconfig             |   2 +-
 arch/arm/mach-nspire/Kconfig          |   2 +-
 arch/arm/mach-rpc/Kconfig             |  21 +++++++
 arch/arm/mach-sa1100/Kconfig          |  25 ++++++--
 22 files changed, 109 insertions(+), 111 deletions(-)
 create mode 100644 arch/arm/mach-rpc/Kconfig

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 6894b4758bfb..3066ce82cffc 100644
--- 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
@@ -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 +319,19 @@ 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
-	help
-	  Support for systems based on the DC21285 companion chip
-	  ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
-
-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.
-
-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.
+	def_bool MMU && !(ARCH_FOOTBRIDGE || ARCH_RPC || ARCH_SA1100)
 
-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 +393,6 @@ 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 +493,8 @@ 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 +560,6 @@ config ARCH_ACORN
 config PLAT_ORION
 	bool
 	select CLKSRC_MMIO
-	select COMMON_CLK
 	select GENERIC_IRQ_CHIP
 	select IRQ_DOMAIN
 
@@ -1358,13 +1279,13 @@ 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
@@ -1772,7 +1693,8 @@ 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
diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug
index 792796a348c3..655f84ada30f 100644
--- a/arch/arm/Kconfig.debug
+++ b/arch/arm/Kconfig.debug
@@ -1904,7 +1904,7 @@ 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_FOOTBRIDGE || ARCH_RPC || ARCH_SA1100)
 	depends on DEBUG_LL && !DEBUG_OMAP2PLUS_UART && \
 		     (!DEBUG_TEGRA_UART || !ZBOOT_ROM) && \
 		     !DEBUG_BRCMSTB_UART && !DEBUG_SEMIHOSTING
@@ -1921,9 +1921,8 @@ 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"
diff --git a/arch/arm/configs/assabet_defconfig b/arch/arm/configs/assabet_defconfig
index 801383e4135d..8ba8eb7a4adf 100644
--- 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"
diff --git a/arch/arm/configs/badge4_defconfig b/arch/arm/configs/badge4_defconfig
index 506f3378da07..b12752fd45cb 100644
--- 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
diff --git a/arch/arm/configs/cerfcube_defconfig b/arch/arm/configs/cerfcube_defconfig
index 7e6f7dfa3023..9ada868e2648 100644
--- 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
diff --git a/arch/arm/configs/collie_defconfig b/arch/arm/configs/collie_defconfig
index d35cc59ce847..2a2d2cb3ce2e 100644
--- 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"
diff --git a/arch/arm/configs/footbridge_defconfig b/arch/arm/configs/footbridge_defconfig
index 504070812ad0..55bf8a6383e2 100644
--- 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
diff --git a/arch/arm/configs/h3600_defconfig b/arch/arm/configs/h3600_defconfig
index 5bd1ec539610..4e272875c797 100644
--- 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
diff --git a/arch/arm/configs/hackkit_defconfig b/arch/arm/configs/hackkit_defconfig
index b9327b2eacd3..a28fb396afc4 100644
--- 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
diff --git a/arch/arm/configs/jornada720_defconfig b/arch/arm/configs/jornada720_defconfig
index 3dcf89d3e1f1..283c81812e18 100644
--- 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
diff --git a/arch/arm/configs/lart_defconfig b/arch/arm/configs/lart_defconfig
index 0c2f19d756c0..b0eb488de9bc 100644
--- 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
diff --git a/arch/arm/configs/neponset_defconfig b/arch/arm/configs/neponset_defconfig
index 907403529e30..79da67d37be9 100644
--- 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
diff --git a/arch/arm/configs/netwinder_defconfig b/arch/arm/configs/netwinder_defconfig
index cf7bbcf9d98a..17fe4126c5de 100644
--- 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
diff --git a/arch/arm/configs/pleb_defconfig b/arch/arm/configs/pleb_defconfig
index d87263336cb2..fd2667873273 100644
--- 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
diff --git a/arch/arm/configs/rpc_defconfig b/arch/arm/configs/rpc_defconfig
index 16d74a1f027a..71bfbd5d811c 100644
--- 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
diff --git a/arch/arm/configs/shannon_defconfig b/arch/arm/configs/shannon_defconfig
index 42252e85ee49..dfcea70b8034 100644
--- 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
diff --git a/arch/arm/configs/simpad_defconfig b/arch/arm/configs/simpad_defconfig
index cc451728f6d9..4e00a4c2c287 100644
--- 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
diff --git a/arch/arm/mach-footbridge/Kconfig b/arch/arm/mach-footbridge/Kconfig
index acc10b1caa69..1c9eae26e6ac 100644
--- 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"
@@ -57,8 +70,6 @@ config ARCH_NETWINDER
 
 	  Saying N will reduce the size of the Footbridge kernel.
 
-endmenu
-
 # Footbridge support
 config FOOTBRIDGE
 	select ARCH_HAS_PHYS_TO_DMA
diff --git a/arch/arm/mach-imx/Kconfig b/arch/arm/mach-imx/Kconfig
index 77e435df8dfe..ab767f059929 100644
--- 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
diff --git a/arch/arm/mach-nspire/Kconfig b/arch/arm/mach-nspire/Kconfig
index eb9916233dea..b7a3871876d7 100644
--- 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
diff --git a/arch/arm/mach-rpc/Kconfig b/arch/arm/mach-rpc/Kconfig
new file mode 100644
index 000000000000..55f6d829b677
--- /dev/null
+++ 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.
diff --git a/arch/arm/mach-sa1100/Kconfig b/arch/arm/mach-sa1100/Kconfig
index 7e0161cb1c1f..fb9cd10705de 100644
--- 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
-
-- 
cgit v1.2.3


From 5408445b1e4d511d835ecbae2fbc9fb9976dbcb9 Mon Sep 17 00:00:00 2001
From: Arnd Bergmann
Date: Thu, 18 Aug 2022 16:17:09 +0200
Subject: ARM: fix XIP_KERNEL dependencies

CONFIG_XIP_KERNEL does not work with any option that involves patching
the read-only kernel .text.

Since at least CONFIG_SMP_ON_UP is required in certain configurations,
flip the dependency to always allow the .text patching options but make
XIP_KERNEL have the dependency instead.

This is a prerequisite for allowing CONFIG_ARCH_MULTIPLATFORM to
be disabled.

Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 arch/arm/Kconfig | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 3066ce82cffc..5375a6ac0cd2 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -246,7 +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
@@ -975,7 +975,7 @@ 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.
@@ -1224,7 +1224,7 @@ 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
@@ -1619,6 +1619,7 @@ 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
-- 
cgit v1.2.3


From 84fc863606239d8b434e59e6bbbe805f457e5767 Mon Sep 17 00:00:00 2001
From: Arnd Bergmann
Date: Wed, 27 Jul 2022 14:08:24 +0200
Subject: ARM: make ARCH_MULTIPLATFORM user-visible

Some options like CONFIG_DEBUG_UNCOMPRESS and CONFIG_CMDLINE_FORCE are
fundamentally incompatible with portable kernels but are currently allowed
in all configurations. Other options like XIP_KERNEL are essentially
useless after the completion of the multiplatform conversion.

Repurpose the existing CONFIG_ARCH_MULTIPLATFORM option to decide
whether the resulting kernel image is meant to be portable or not,
and using this to guard all of the known incompatible options.

This is similar to how the RISC-V kernel handles the CONFIG_NONPORTABLE
option (with the opposite polarity).

A few references to CONFIG_ARCH_MULTIPLATFORM were left behind by
earlier clanups and have to be removed now up.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 arch/arm/Kconfig               | 15 ++++++++++++++-
 arch/arm/Kconfig.debug         |  1 +
 arch/arm/kernel/devtree.c      |  2 --
 arch/arm/mach-dove/Makefile    |  2 +-
 arch/arm/mach-mv78xx0/Makefile |  2 +-
 arch/arm/mach-mvebu/Makefile   |  2 +-
 arch/arm/mach-orion5x/Makefile |  2 +-
 7 files changed, 19 insertions(+), 7 deletions(-)

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 5375a6ac0cd2..380455005514 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -320,7 +320,19 @@ config ARCH_MMAP_RND_BITS_MAX
 	default 16
 
 config ARCH_MULTIPLATFORM
-	def_bool MMU && !(ARCH_FOOTBRIDGE || ARCH_RPC || ARCH_SA1100)
+	bool "Require kernel to be portable to multiple machines" if EXPERT
+	depends on MMU && !(ARCH_FOOTBRIDGE || ARCH_RPC || ARCH_SA1100)
+	default y
+	help
+	  In general, all Arm machines can be supported in a single
+	  kernel image, covering either Armv4/v5 or Armv6/v7.
+
+	  However, some configuration options require hardcoding machine
+	  specific physical addresses or enable errata workarounds that may
+	  break other machines.
+
+	  Selecting N here allows using those options, including
+	  DEBUG_UNCOMPRESS, XIP_KERNEL and ZBOOT_ROM. If unsure, say Y.
 
 menu "Platform selection"
 	depends on MMU
@@ -1609,6 +1621,7 @@ 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.
diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug
index 655f84ada30f..c345775f035b 100644
--- a/arch/arm/Kconfig.debug
+++ b/arch/arm/Kconfig.debug
@@ -1904,6 +1904,7 @@ config DEBUG_UART_8250_PALMCHIP
 
 config DEBUG_UNCOMPRESS
 	bool "Enable decompressor debugging via DEBUG_LL output"
+	depends on !ARCH_MULTIPLATFORM
 	depends on !(ARCH_FOOTBRIDGE || ARCH_RPC || ARCH_SA1100)
 	depends on DEBUG_LL && !DEBUG_OMAP2PLUS_UART && \
 		     (!DEBUG_TEGRA_UART || !ZBOOT_ROM) && \
diff --git a/arch/arm/kernel/devtree.c b/arch/arm/kernel/devtree.c
index 02839d8b6202..264827281113 100644
--- 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;
diff --git a/arch/arm/mach-dove/Makefile b/arch/arm/mach-dove/Makefile
index e83f6492834d..da373a5768ba 100644
--- 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-$(CONFIG_DOVE_LEGACY)	+= irq.o mpp.o
diff --git a/arch/arm/mach-mv78xx0/Makefile b/arch/arm/mach-mv78xx0/Makefile
index a839e960b8c6..50aff70065f2 100644
--- a/arch/arm/mach-mv78xx0/Makefile
+++ b/arch/arm/mach-mv78xx0/Makefile
@@ -1,5 +1,5 @@
 # SPDX-License-Identifier: GPL-2.0
-ccflags-$(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-$(CONFIG_MACH_DB78X00_BP)	+= db78x00-bp-setup.o
diff --git a/arch/arm/mach-mvebu/Makefile b/arch/arm/mach-mvebu/Makefile
index cb106899dd7c..c21733cbb4fa 100644
--- a/arch/arm/mach-mvebu/Makefile
+++ b/arch/arm/mach-mvebu/Makefile
@@ -1,5 +1,5 @@
 # SPDX-License-Identifier: GPL-2.0
-ccflags-$(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
diff --git a/arch/arm/mach-orion5x/Makefile b/arch/arm/mach-orion5x/Makefile
index 1a585a62d5e6..572c3520f7fe 100644
--- 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
-- 
cgit v1.2.3


From 96796c914b841a7658e9617b1325175b4d02c574 Mon Sep 17 00:00:00 2001
From: Florian Fainelli
Date: Mon, 29 Aug 2022 10:38:28 -0700
Subject: arm64: Kconfig.platforms: Re-organized Broadcom menu

There are now multiple Broadcom SoCs supported so group them under their
own menu such that the selection is visually more appealing and we can
easily add new platforms there in the future. This allows us to move
ARCH_BRCMSTB back to its siblings.

No functional changes introduced.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/20220829173830.3567047-2-f.fainelli@gmail.com'
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 arch/arm64/Kconfig.platforms | 23 +++++++++++++++--------
 1 file changed, 15 insertions(+), 8 deletions(-)

diff --git a/arch/arm64/Kconfig.platforms b/arch/arm64/Kconfig.platforms
index 74e9e9de3759..748f9ac4d775 100644
--- a/arch/arm64/Kconfig.platforms
+++ b/arch/arm64/Kconfig.platforms
@@ -33,6 +33,11 @@ config ARCH_APPLE
 	  This enables support for Apple's in-house ARM SoC family, starting
 	  with the Apple M1.
 
+menuconfig ARCH_BCM
+	bool "Broadcom SoC Support"
+
+if ARCH_BCM
+
 config ARCH_BCM2835
 	bool "Broadcom BCM2835 family"
 	select TIMER_OF
@@ -73,6 +78,16 @@ config ARCH_BCMBCA
 	  This enables support for Broadcom BCA ARM-based broadband chipsets,
 	  including the DSL, PON and Wireless family of chips.
 
+config ARCH_BRCMSTB
+	bool "Broadcom Set-Top-Box SoCs"
+	select ARCH_HAS_RESET_CONTROLLER
+	select GENERIC_IRQ_CHIP
+	select PINCTRL
+	help
+	  This enables support for Broadcom's ARMv8 Set Top Box SoCs
+
+endif
+
 config ARCH_BERLIN
 	bool "Marvell Berlin SoC Family"
 	select DW_APB_ICTL
@@ -87,14 +102,6 @@ config ARCH_BITMAIN
 	help
 	  This enables support for the Bitmain SoC Family.
 
-config ARCH_BRCMSTB
-	bool "Broadcom Set-Top-Box SoCs"
-	select ARCH_HAS_RESET_CONTROLLER
-	select GENERIC_IRQ_CHIP
-	select PINCTRL
-	help
-	  This enables support for Broadcom's ARMv8 Set Top Box SoCs
-
 config ARCH_EXYNOS
 	bool "ARMv8 based Samsung Exynos SoC family"
 	select COMMON_CLK_SAMSUNG
-- 
cgit v1.2.3


From 566e373fe047f35be58d8a97061275be4dcb4132 Mon Sep 17 00:00:00 2001
From: Florian Fainelli
Date: Mon, 29 Aug 2022 10:38:29 -0700
Subject: arm64: Kconfig.platforms: Group NXP platforms together

Group the three NXP platforms under an ARCH_NXP menuconfig symbol to
make make selection of similar vendor SoCs visually nicer.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/20220829173830.3567047-3-f.fainelli@gmail.com'
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 arch/arm64/Kconfig.platforms | 29 ++++++++++++++++++-----------
 1 file changed, 18 insertions(+), 11 deletions(-)

diff --git a/arch/arm64/Kconfig.platforms b/arch/arm64/Kconfig.platforms
index 748f9ac4d775..61d946e092d3 100644
--- a/arch/arm64/Kconfig.platforms
+++ b/arch/arm64/Kconfig.platforms
@@ -143,12 +143,6 @@ config ARCH_K3
 	  This enables support for Texas Instruments' K3 multicore SoC
 	  architecture.
 
-config ARCH_LAYERSCAPE
-	bool "ARMv8 based Freescale Layerscape SoC family"
-	select EDAC_SUPPORT
-	help
-	  This enables support for the Freescale Layerscape SoC family.
-
 config ARCH_LG1K
 	bool "LG Electronics LG1K SoC Family"
 	help
@@ -207,6 +201,17 @@ config ARCH_MVEBU
 	   - Armada 8K SoC Family
 	   - 98DX2530 SoC Family
 
+menuconfig ARCH_NXP
+	bool "NXP SoC support"
+
+if ARCH_NXP
+
+config ARCH_LAYERSCAPE
+	bool "ARMv8 based Freescale Layerscape SoC family"
+	select EDAC_SUPPORT
+	help
+	  This enables support for the Freescale Layerscape SoC family.
+
 config ARCH_MXC
 	bool "ARMv8 based NXP i.MX SoC family"
 	select ARM64_ERRATUM_843419
@@ -221,6 +226,13 @@ config ARCH_MXC
 	  This enables support for the ARMv8 based SoCs in the
 	  NXP i.MX family.
 
+config ARCH_S32
+	bool "NXP S32 SoC Family"
+	help
+	  This enables support for the NXP S32 family of processors.
+
+endif
+
 config ARCH_NPCM
 	bool "Nuvoton NPCM Architecture"
 	select PINCTRL
@@ -264,11 +276,6 @@ config ARCH_ROCKCHIP
 	  This enables support for the ARMv8 based Rockchip chipsets,
 	  like the RK3368.
 
-config ARCH_S32
-	bool "NXP S32 SoC Family"
-	help
-	  This enables support for the NXP S32 family of processors.
-
 config ARCH_SEATTLE
 	bool "AMD Seattle SoC Family"
 	help
-- 
cgit v1.2.3


From b519c9c7e68d5e2e9d5aaff3843fda09342c79d7 Mon Sep 17 00:00:00 2001
From: Arnd Bergmann
Date: Thu, 18 Aug 2022 17:18:12 +0200
Subject: ARM: footbridge: remove addin mode

This does not appear to have been used in many years, we can
kill off some of the uglier code.

Among other things, it avoids a randconfig issue when both modes
are disabled:

arch/arm/mach-footbridge/common.c:149:24: error: 'ebsa285_host_io_desc' defined but not used [-Werror=unused-variable]
  149 | static struct map_desc ebsa285_host_io_desc[] __initdata = {
      |                        ^~~~~~~~~~~~~~~~~~~~
arch/arm/mach-footbridge/common.c:136:24: error: 'fb_common_io_desc' defined but not used [-Werror=unused-variable]
  136 | static struct map_desc fb_common_io_desc[] __initdata = {
      |                        ^~~~~~~~~~~~~~~~~

The recently added phys_to_dma() functions are now trivial and
could probably be removed again as a follow-up, if anyone knows
how.

Cc: Christoph Hellwig <hch@lst.de>
Tested-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 arch/arm/include/asm/hardware/dec21285.h       | 13 -----
 arch/arm/mach-footbridge/Kconfig               | 28 +---------
 arch/arm/mach-footbridge/Makefile              |  2 +-
 arch/arm/mach-footbridge/common.c              | 73 +++-----------------------
 arch/arm/mach-footbridge/dc21285.c             | 61 +++++++--------------
 arch/arm/mach-footbridge/dma.c                 |  3 +-
 arch/arm/mach-footbridge/include/mach/memory.h | 22 --------
 arch/arm/mach-footbridge/isa.c                 |  3 --
 8 files changed, 30 insertions(+), 175 deletions(-)

diff --git a/arch/arm/include/asm/hardware/dec21285.h b/arch/arm/include/asm/hardware/dec21285.h
index 3f18a56a025d..eee390e8d4dc 100644
--- a/arch/arm/include/asm/hardware/dec21285.h
+++ b/arch/arm/include/asm/hardware/dec21285.h
@@ -81,19 +81,6 @@
 #define SA110_CNTL_XCSDIR(x)		((x)<<28)
 #define SA110_CNTL_PCICFN		(1 << 31)
 
-/*
- * footbridge_cfn_mode() is used when we want
- * to check whether we are the central function
- */
-#define __footbridge_cfn_mode() (*CSR_SA110_CNTL & SA110_CNTL_PCICFN)
-#if defined(CONFIG_FOOTBRIDGE_HOST) && defined(CONFIG_FOOTBRIDGE_ADDIN)
-#define footbridge_cfn_mode() __footbridge_cfn_mode()
-#elif defined(CONFIG_FOOTBRIDGE_HOST)
-#define footbridge_cfn_mode() (1)
-#else
-#define footbridge_cfn_mode() (0)
-#endif
-
 #define CSR_PCIADDR_EXTN	DC21285_IO(0x0140)
 #define CSR_PREFETCHMEMRANGE	DC21285_IO(0x0144)
 #define CSR_XBUS_CYCLE		DC21285_IO(0x0148)
diff --git a/arch/arm/mach-footbridge/Kconfig b/arch/arm/mach-footbridge/Kconfig
index acc10b1caa69..3497ea8e91e3 100644
--- a/arch/arm/mach-footbridge/Kconfig
+++ b/arch/arm/mach-footbridge/Kconfig
@@ -8,31 +8,17 @@ config ARCH_CATS
 	depends on UNUSED_BOARD_FILES
 	select CLKEVT_I8253
 	select CLKSRC_I8253
-	select FOOTBRIDGE_HOST
 	select ISA
-	select ISA_DMA
 	select FORCE_PCI
 	help
 	  Say Y here if you intend to run this kernel on the CATS.
 
 	  Saying N will reduce the size of the Footbridge kernel.
 
-config ARCH_EBSA285_ADDIN
-	bool "EBSA285 (addin mode)"
-	select ARCH_EBSA285
-	select FOOTBRIDGE_ADDIN
-	help
-	  Say Y here if you intend to run this kernel on the EBSA285 card
-	  in addin mode.
-
-	  Saying N will reduce the size of the Footbridge kernel.
-
 config ARCH_EBSA285_HOST
 	bool "EBSA285 (host mode)"
 	select ARCH_EBSA285
-	select FOOTBRIDGE_HOST
 	select ISA
-	select ISA_DMA
 	select ARCH_MAY_HAVE_PC_FDC
 	select FORCE_PCI
 	help
@@ -45,9 +31,7 @@ config ARCH_NETWINDER
 	bool "NetWinder"
 	select CLKEVT_I8253
 	select CLKSRC_I8253
-	select FOOTBRIDGE_HOST
 	select ISA
-	select ISA_DMA
 	select FORCE_PCI
 	help
 	  Say Y here if you intend to run this kernel on the Rebel.COM
@@ -61,19 +45,11 @@ endmenu
 
 # Footbridge support
 config FOOTBRIDGE
+	def_bool y
 	select ARCH_HAS_PHYS_TO_DMA
-	bool
-
-# Footbridge in host mode
-config FOOTBRIDGE_HOST
-	bool
 	select ARCH_MIGHT_HAVE_PC_SERIO
+	select ISA_DMA
 
-# Footbridge in addin mode
-config FOOTBRIDGE_ADDIN
-	bool
-
-# EBSA285 board in either host or addin mode
 config ARCH_EBSA285
 	bool
 
diff --git a/arch/arm/mach-footbridge/Makefile b/arch/arm/mach-footbridge/Makefile
index 6262993c0555..30bae6684dce 100644
--- a/arch/arm/mach-footbridge/Makefile
+++ b/arch/arm/mach-footbridge/Makefile
@@ -9,7 +9,7 @@ obj-y			:= common.o dma.o isa-irq.o
 
 pci-y			+= dc21285.o
 pci-$(CONFIG_ARCH_CATS) += cats-pci.o
-pci-$(CONFIG_ARCH_EBSA285_HOST) += ebsa285-pci.o
+pci-$(CONFIG_ARCH_EBSA285) += ebsa285-pci.o
 pci-$(CONFIG_ARCH_NETWINDER) += netwinder-pci.o
 
 obj-$(CONFIG_ARCH_CATS) += cats-hw.o isa-timer.o
diff --git a/arch/arm/mach-footbridge/common.c b/arch/arm/mach-footbridge/common.c
index 5020eb96b025..9483eccea5ae 100644
--- a/arch/arm/mach-footbridge/common.c
+++ b/arch/arm/mach-footbridge/common.c
@@ -198,9 +198,6 @@ void __init footbridge_init_irq(void)
 
 	__fb_init_irq();
 
-	if (!footbridge_cfn_mode())
-		return;
-
 	if (machine_is_ebsa285())
 		/* The following is dependent on which slot
 		 * you plug the Southbridge card into.  We
@@ -221,21 +218,13 @@ void __init footbridge_init_irq(void)
  * commented out since there is a "No Fix" problem with it.  Not mapping
  * it means that we have extra bullet protection on our feet.
  */
-static struct map_desc fb_common_io_desc[] __initdata = {
+static struct map_desc ebsa285_host_io_desc[] __initdata = {
 	{
 		.virtual	= ARMCSR_BASE,
 		.pfn		= __phys_to_pfn(DC21285_ARMCSR_BASE),
 		.length		= ARMCSR_SIZE,
 		.type		= MT_DEVICE,
-	}
-};
-
-/*
- * The mapping when the footbridge is in host mode.  We don't map any of
- * this when we are in add-in mode.
- */
-static struct map_desc ebsa285_host_io_desc[] __initdata = {
-#if defined(CONFIG_ARCH_FOOTBRIDGE) && defined(CONFIG_FOOTBRIDGE_HOST)
+	},
 	{
 		.virtual	= PCIMEM_BASE,
 		.pfn		= __phys_to_pfn(DC21285_PCI_MEM),
@@ -257,26 +246,12 @@ static struct map_desc ebsa285_host_io_desc[] __initdata = {
 		.length		= PCIIACK_SIZE,
 		.type		= MT_DEVICE,
 	},
-#endif
 };
 
 void __init footbridge_map_io(void)
 {
-	/*
-	 * Set up the common mapping first; we need this to
-	 * determine whether we're in host mode or not.
-	 */
-	iotable_init(fb_common_io_desc, ARRAY_SIZE(fb_common_io_desc));
-
-	/*
-	 * Now, work out what we've got to map in addition on this
-	 * platform.
-	 */
-	if (footbridge_cfn_mode()) {
-		iotable_init(ebsa285_host_io_desc, ARRAY_SIZE(ebsa285_host_io_desc));
-		pci_map_io_early(__phys_to_pfn(DC21285_PCI_IO));
-	}
-
+	iotable_init(ebsa285_host_io_desc, ARRAY_SIZE(ebsa285_host_io_desc));
+	pci_map_io_early(__phys_to_pfn(DC21285_PCI_IO));
 	vga_base = PCIMEM_BASE;
 }
 
@@ -307,48 +282,12 @@ void footbridge_restart(enum reboot_mode mode, const char *cmd)
 	}
 }
 
-#ifdef CONFIG_FOOTBRIDGE_ADDIN
-
-static inline unsigned long fb_bus_sdram_offset(void)
-{
-	return *CSR_PCISDRAMBASE & 0xfffffff0;
-}
-
-/*
- * These two functions convert virtual addresses to PCI addresses and PCI
- * addresses to virtual addresses.  Note that it is only legal to use these
- * on memory obtained via get_zeroed_page or kmalloc.
- */
-unsigned long __virt_to_bus(unsigned long res)
-{
-	WARN_ON(res < PAGE_OFFSET || res >= (unsigned long)high_memory);
-
-	return res + (fb_bus_sdram_offset() - PAGE_OFFSET);
-}
-EXPORT_SYMBOL(__virt_to_bus);
-
-unsigned long __bus_to_virt(unsigned long res)
-{
-	res = res - (fb_bus_sdram_offset() - PAGE_OFFSET);
-
-	WARN_ON(res < PAGE_OFFSET || res >= (unsigned long)high_memory);
-
-	return res;
-}
-EXPORT_SYMBOL(__bus_to_virt);
-#else
-static inline unsigned long fb_bus_sdram_offset(void)
-{
-	return BUS_OFFSET;
-}
-#endif /* CONFIG_FOOTBRIDGE_ADDIN */
-
 dma_addr_t phys_to_dma(struct device *dev, phys_addr_t paddr)
 {
-	return paddr + (fb_bus_sdram_offset() - PHYS_OFFSET);
+	return paddr + (BUS_OFFSET - PHYS_OFFSET);
 }
 
 phys_addr_t dma_to_phys(struct device *dev, dma_addr_t dev_addr)
 {
-	return dev_addr - (fb_bus_sdram_offset() - PHYS_OFFSET);
+	return dev_addr - (BUS_OFFSET - PHYS_OFFSET);
 }
diff --git a/arch/arm/mach-footbridge/dc21285.c b/arch/arm/mach-footbridge/dc21285.c
index f9713dc561cf..372600bc15c8 100644
--- a/arch/arm/mach-footbridge/dc21285.c
+++ b/arch/arm/mach-footbridge/dc21285.c
@@ -245,9 +245,6 @@ int __init dc21285_setup(int nr, struct pci_sys_data *sys)
 {
 	struct resource *res;
 
-	if (nr || !footbridge_cfn_mode())
-		return 0;
-
 	res = kcalloc(2, sizeof(struct resource), GFP_KERNEL);
 	if (!res) {
 		printk("out of memory for root bus resources");
@@ -278,7 +275,6 @@ int __init dc21285_setup(int nr, struct pci_sys_data *sys)
 void __init dc21285_preinit(void)
 {
 	unsigned int mem_size, mem_mask;
-	int cfn_mode;
 
 	pcibios_min_mem = 0x81000000;
 
@@ -298,21 +294,15 @@ void __init dc21285_preinit(void)
 	*CSR_CSRBASEOFFSET    = 0;
 	*CSR_PCIADDR_EXTN     = 0;
 
-	cfn_mode = __footbridge_cfn_mode();
-
 	printk(KERN_INFO "PCI: DC21285 footbridge, revision %02lX, in "
-		"%s mode\n", *CSR_CLASSREV & 0xff, cfn_mode ?
-		"central function" : "addin");
-
-	if (footbridge_cfn_mode()) {
-		/*
-		 * Clear any existing errors - we aren't
-		 * interested in historical data...
-		 */
-		*CSR_SA110_CNTL	= (*CSR_SA110_CNTL & 0xffffde07) |
-				  SA110_CNTL_RXSERR;
-		*CSR_PCICMD = (*CSR_PCICMD & 0xffff) | PCICMD_ERROR_BITS;
-	}
+		"central function mode\n", *CSR_CLASSREV & 0xff);
+
+	/*
+	 * Clear any existing errors - we aren't
+	 * interested in historical data...
+	 */
+	*CSR_SA110_CNTL	= (*CSR_SA110_CNTL & 0xffffde07) | SA110_CNTL_RXSERR;
+	*CSR_PCICMD = (*CSR_PCICMD & 0xffff) | PCICMD_ERROR_BITS;
 
 	timer_setup(&serr_timer, dc21285_enable_error, 0);
 	timer_setup(&perr_timer, dc21285_enable_error, 0);
@@ -331,29 +321,18 @@ void __init dc21285_preinit(void)
 	dc21285_request_irq(IRQ_PCI_DPERR, dc21285_dparity_irq, 0,
 			    "PCI data parity", NULL);
 
-	if (cfn_mode) {
-		/*
-		 * Map our SDRAM at a known address in PCI space, just in case
-		 * the firmware had other ideas.  Using a nonzero base is
-		 * necessary, since some VGA cards forcefully use PCI addresses
-		 * in the range 0x000a0000 to 0x000c0000. (eg, S3 cards).
-		 */
-		*CSR_PCICSRBASE       = 0xf4000000;
-		*CSR_PCICSRIOBASE     = 0;
-		*CSR_PCISDRAMBASE     = __virt_to_bus(PAGE_OFFSET);
-		*CSR_PCIROMBASE       = 0;
-		*CSR_PCICMD = PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER |
-			      PCI_COMMAND_INVALIDATE | PCICMD_ERROR_BITS;
-	} else if (footbridge_cfn_mode() != 0) {
-		/*
-		 * If we are not compiled to accept "add-in" mode, then
-		 * we are using a constant virt_to_bus translation which
-		 * can not hope to cater for the way the host BIOS  has
-		 * set up the machine.
-		 */
-		panic("PCI: this kernel is compiled for central "
-			"function mode only");
-	}
+	/*
+	 * Map our SDRAM at a known address in PCI space, just in case
+	 * the firmware had other ideas.  Using a nonzero base is
+	 * necessary, since some VGA cards forcefully use PCI addresses
+	 * in the range 0x000a0000 to 0x000c0000. (eg, S3 cards).
+	 */
+	*CSR_PCICSRBASE       = 0xf4000000;
+	*CSR_PCICSRIOBASE     = 0;
+	*CSR_PCISDRAMBASE     = __virt_to_bus(PAGE_OFFSET);
+	*CSR_PCIROMBASE       = 0;
+	*CSR_PCICMD = PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER |
+		      PCI_COMMAND_INVALIDATE | PCICMD_ERROR_BITS;
 }
 
 void __init dc21285_postinit(void)
diff --git a/arch/arm/mach-footbridge/dma.c b/arch/arm/mach-footbridge/dma.c
index 86618074a7a5..228757c8e06f 100644
--- a/arch/arm/mach-footbridge/dma.c
+++ b/arch/arm/mach-footbridge/dma.c
@@ -50,8 +50,7 @@ static int __init fb_dma_init(void)
 	dma[_DC21285_DMA(1)].d_ops = &fb_dma_ops;
 #endif
 #ifdef CONFIG_ISA_DMA
-	if (footbridge_cfn_mode())
-		isa_init_dma();
+	isa_init_dma();
 #endif
 	return 0;
 }
diff --git a/arch/arm/mach-footbridge/include/mach/memory.h b/arch/arm/mach-footbridge/include/mach/memory.h
index 3a5d2638c18f..8f0ca8e8b37e 100644
--- a/arch/arm/mach-footbridge/include/mach/memory.h
+++ b/arch/arm/mach-footbridge/include/mach/memory.h
@@ -16,22 +16,6 @@
 #ifndef __ASM_ARCH_MEMORY_H
 #define __ASM_ARCH_MEMORY_H
 
-
-#if defined(CONFIG_FOOTBRIDGE_ADDIN)
-/*
- * If we may be using add-in footbridge mode, then we must
- * use the out-of-line translation that makes use of the
- * PCI BAR
- */
-#ifndef __ASSEMBLY__
-extern unsigned long __virt_to_bus(unsigned long);
-extern unsigned long __bus_to_virt(unsigned long);
-#endif
-#define __virt_to_bus	__virt_to_bus
-#define __bus_to_virt	__bus_to_virt
-
-#elif defined(CONFIG_FOOTBRIDGE_HOST)
-
 /*
  * The footbridge is programmed to expose the system RAM at 0xe0000000.
  * The requirement is that the RAM isn't placed at bus address 0, which
@@ -41,12 +25,6 @@ extern unsigned long __bus_to_virt(unsigned long);
 #define __virt_to_bus(x)	((x) + (BUS_OFFSET - PAGE_OFFSET))
 #define __bus_to_virt(x)	((x) - (BUS_OFFSET - PAGE_OFFSET))
 
-#else
-
-#error "Undefined footbridge mode"
-
-#endif
-
 /*
  * Cache flushing area.
  */
diff --git a/arch/arm/mach-footbridge/isa.c b/arch/arm/mach-footbridge/isa.c
index ec5af521cf95..3375ac23c046 100644
--- a/arch/arm/mach-footbridge/isa.c
+++ b/arch/arm/mach-footbridge/isa.c
@@ -79,9 +79,6 @@ static int __init footbridge_isa_init(void)
 {
 	int err = 0;
 
-	if (!footbridge_cfn_mode())
-		return 0;
-
 	/* Personal server doesn't have RTC */
 	if (!machine_is_personal_server()) {
 		isa_rtc_init();
-- 
cgit v1.2.3


From b6dd828445aa3db9503e95863b6dad7483a963a3 Mon Sep 17 00:00:00 2001
From: Arnd Bergmann
Date: Fri, 1 Jul 2022 11:41:34 +0200
Subject: ARM: footbridge: remove leftover from personal-server

The machine was removed a while ago, and the checks are
now useless.

Reviewed-by: Christoph Hellwig <hch@lst.de>
Tested-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 arch/arm/mach-footbridge/isa.c | 11 +++++------
 drivers/tty/serial/21285.c     |  3 ---
 2 files changed, 5 insertions(+), 9 deletions(-)

diff --git a/arch/arm/mach-footbridge/isa.c b/arch/arm/mach-footbridge/isa.c
index 3375ac23c046..84caccddce44 100644
--- a/arch/arm/mach-footbridge/isa.c
+++ b/arch/arm/mach-footbridge/isa.c
@@ -80,12 +80,11 @@ static int __init footbridge_isa_init(void)
 	int err = 0;
 
 	/* Personal server doesn't have RTC */
-	if (!machine_is_personal_server()) {
-		isa_rtc_init();
-		err = platform_device_register(&rtc_device);
-		if (err)
-			printk(KERN_ERR "Unable to register RTC device: %d\n", err);
-	}
+	isa_rtc_init();
+	err = platform_device_register(&rtc_device);
+	if (err)
+		printk(KERN_ERR "Unable to register RTC device: %d\n", err);
+
 	err = platform_device_register(&serial_device);
 	if (err)
 		printk(KERN_ERR "Unable to register serial device: %d\n", err);
diff --git a/drivers/tty/serial/21285.c b/drivers/tty/serial/21285.c
index 7520cc02fd4d..65d6af755567 100644
--- a/drivers/tty/serial/21285.c
+++ b/drivers/tty/serial/21285.c
@@ -461,9 +461,6 @@ static int __init serial21285_console_setup(struct console *co, char *options)
 	int parity = 'n';
 	int flow = 'n';
 
-	if (machine_is_personal_server())
-		baud = 57600;
-
 	/*
 	 * Check whether an invalid uart number has been specified, and
 	 * if so, search for the first available port that does have
-- 
cgit v1.2.3


From e7536617baec3b4717a37795cec306df9d655d07 Mon Sep 17 00:00:00 2001
From: Arnd Bergmann
Date: Fri, 1 Jul 2022 11:44:52 +0200
Subject: ARM: footbridge: move isa-dma support into footbridge

The dma-isa.c was shared between footbridge and shark a long time ago,
but as shark was removed, it can be made footbridge specific again.

The fb_dma bits in turn are not used at all and can be removed.

All the ISA related files are now built into the platform regardless
of CONFIG_ISA, as they just refer to on-chip devices rather than actual
ISA cards.

Reviewed-by: Christoph Hellwig <hch@lst.de>
Tested-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 arch/arm/Kconfig                                |   5 -
 arch/arm/include/asm/mach/dma.h                 |   5 -
 arch/arm/kernel/Makefile                        |   1 -
 arch/arm/kernel/dma-isa.c                       | 225 -----------------------
 arch/arm/mach-footbridge/Kconfig                |   2 +-
 arch/arm/mach-footbridge/Makefile               |   3 +-
 arch/arm/mach-footbridge/dma-isa.c              | 226 ++++++++++++++++++++++++
 arch/arm/mach-footbridge/dma.c                  |  57 ------
 arch/arm/mach-footbridge/include/mach/isa-dma.h |  14 +-
 9 files changed, 231 insertions(+), 307 deletions(-)
 delete mode 100644 arch/arm/kernel/dma-isa.c
 create mode 100644 arch/arm/mach-footbridge/dma-isa.c
 delete mode 100644 arch/arm/mach-footbridge/dma.c

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 87badeae3181..ec7e48f6bd91 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -989,11 +989,6 @@ config ISA
 	  (MCA) or VESA.  ISA is an older system, now being displaced by PCI;
 	  newer boards don't support it.  If you have ISA, say Y, otherwise N.
 
-# Select ISA DMA controller support
-config ISA_DMA
-	bool
-	select ISA_DMA_API
-
 # Select ISA DMA interface
 config ISA_DMA_API
 	bool
diff --git a/arch/arm/include/asm/mach/dma.h b/arch/arm/include/asm/mach/dma.h
index 1506422af383..5ec11d7f0d04 100644
--- a/arch/arm/include/asm/mach/dma.h
+++ b/arch/arm/include/asm/mach/dma.h
@@ -44,8 +44,3 @@ struct dma_struct {
  * isa_dma_add - add an ISA-style DMA channel
  */
 extern int isa_dma_add(unsigned int, dma_t *dma);
-
-/*
- * Add the ISA DMA controller.  Always takes channels 0-7.
- */
-extern void isa_init_dma(void);
diff --git a/arch/arm/kernel/Makefile b/arch/arm/kernel/Makefile
index 553866751e1a..95034d32213c 100644
--- a/arch/arm/kernel/Makefile
+++ b/arch/arm/kernel/Makefile
@@ -45,7 +45,6 @@ obj-$(CONFIG_ISA_DMA_API)	+= dma.o
 obj-$(CONFIG_FIQ)		+= fiq.o fiqasm.o
 obj-$(CONFIG_MODULES)		+= armksyms.o module.o
 obj-$(CONFIG_ARM_MODULE_PLTS)	+= module-plts.o
-obj-$(CONFIG_ISA_DMA)		+= dma-isa.o
 obj-$(CONFIG_PCI)		+= bios32.o isa.o
 obj-$(CONFIG_ARM_CPU_SUSPEND)	+= sleep.o suspend.o
 obj-$(CONFIG_HIBERNATION)	+= hibernate.o
diff --git a/arch/arm/kernel/dma-isa.c b/arch/arm/kernel/dma-isa.c
deleted file mode 100644
index 2d90ecce5a11..000000000000
--- a/arch/arm/kernel/dma-isa.c
+++ /dev/null
@@ -1,225 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- *  linux/arch/arm/kernel/dma-isa.c
- *
- *  Copyright (C) 1999-2000 Russell King
- *
- *  ISA DMA primitives
- *  Taken from various sources, including:
- *   linux/include/asm/dma.h: Defines for using and allocating dma channels.
- *     Written by Hennus Bergman, 1992.
- *     High DMA channel support & info by Hannu Savolainen and John Boyd,
- *     Nov. 1992.
- *   arch/arm/kernel/dma-ebsa285.c
- *   Copyright (C) 1998 Phil Blundell
- */
-#include <linux/ioport.h>
-#include <linux/init.h>
-#include <linux/dma-mapping.h>
-#include <linux/io.h>
-
-#include <asm/dma.h>
-#include <asm/mach/dma.h>
-
-#define ISA_DMA_MASK		0
-#define ISA_DMA_MODE		1
-#define ISA_DMA_CLRFF		2
-#define ISA_DMA_PGHI		3
-#define ISA_DMA_PGLO		4
-#define ISA_DMA_ADDR		5
-#define ISA_DMA_COUNT		6
-
-static unsigned int isa_dma_port[8][7] = {
-	/* MASK   MODE   CLRFF  PAGE_HI PAGE_LO ADDR COUNT */
-	{  0x0a,  0x0b,  0x0c,  0x487,  0x087,  0x00, 0x01 },
-	{  0x0a,  0x0b,  0x0c,  0x483,  0x083,  0x02, 0x03 },
-	{  0x0a,  0x0b,  0x0c,  0x481,  0x081,  0x04, 0x05 },
-	{  0x0a,  0x0b,  0x0c,  0x482,  0x082,  0x06, 0x07 },
-	{  0xd4,  0xd6,  0xd8,  0x000,  0x000,  0xc0, 0xc2 },
-	{  0xd4,  0xd6,  0xd8,  0x48b,  0x08b,  0xc4, 0xc6 },
-	{  0xd4,  0xd6,  0xd8,  0x489,  0x089,  0xc8, 0xca },
-	{  0xd4,  0xd6,  0xd8,  0x48a,  0x08a,  0xcc, 0xce }
-};
-
-static int isa_get_dma_residue(unsigned int chan, dma_t *dma)
-{
-	unsigned int io_port = isa_dma_port[chan][ISA_DMA_COUNT];
-	int count;
-
-	count = 1 + inb(io_port);
-	count |= inb(io_port) << 8;
-
-	return chan < 4 ? count : (count << 1);
-}
-
-static struct device isa_dma_dev = {
-	.init_name		= "fallback device",
-	.coherent_dma_mask	= ~(dma_addr_t)0,
-	.dma_mask		= &isa_dma_dev.coherent_dma_mask,
-};
-
-static void isa_enable_dma(unsigned int chan, dma_t *dma)
-{
-	if (dma->invalid) {
-		unsigned long address, length;
-		unsigned int mode;
-		enum dma_data_direction direction;
-
-		mode = (chan & 3) | dma->dma_mode;
-		switch (dma->dma_mode & DMA_MODE_MASK) {
-		case DMA_MODE_READ:
-			direction = DMA_FROM_DEVICE;
-			break;
-
-		case DMA_MODE_WRITE:
-			direction = DMA_TO_DEVICE;
-			break;
-
-		case DMA_MODE_CASCADE:
-			direction = DMA_BIDIRECTIONAL;
-			break;
-
-		default:
-			direction = DMA_NONE;
-			break;
-		}
-
-		if (!dma->sg) {
-			/*
-			 * Cope with ISA-style drivers which expect cache
-			 * coherence.
-			 */
-			dma->sg = &dma->buf;
-			dma->sgcount = 1;
-			dma->buf.length = dma->count;
-			dma->buf.dma_address = dma_map_single(&isa_dma_dev,
-				dma->addr, dma->count,
-				direction);
-		}
-
-		address = dma->buf.dma_address;
-		length  = dma->buf.length - 1;
-
-		outb(address >> 16, isa_dma_port[chan][ISA_DMA_PGLO]);
-		outb(address >> 24, isa_dma_port[chan][ISA_DMA_PGHI]);
-
-		if (chan >= 4) {
-			address >>= 1;
-			length >>= 1;
-		}
-
-		outb(0, isa_dma_port[chan][ISA_DMA_CLRFF]);
-
-		outb(address, isa_dma_port[chan][ISA_DMA_ADDR]);
-		outb(address >> 8, isa_dma_port[chan][ISA_DMA_ADDR]);
-
-		outb(length, isa_dma_port[chan][ISA_DMA_COUNT]);
-		outb(length >> 8, isa_dma_port[chan][ISA_DMA_COUNT]);
-
-		outb(mode, isa_dma_port[chan][ISA_DMA_MODE]);
-		dma->invalid = 0;
-	}
-	outb(chan & 3, isa_dma_port[chan][ISA_DMA_MASK]);
-}
-
-static void isa_disable_dma(unsigned int chan, dma_t *dma)
-{
-	outb(chan | 4, isa_dma_port[chan][ISA_DMA_MASK]);
-}
-
-static struct dma_ops isa_dma_ops = {
-	.type		= "ISA",
-	.enable		= isa_enable_dma,
-	.disable	= isa_disable_dma,
-	.residue	= isa_get_dma_residue,
-};
-
-static struct resource dma_resources[] = { {
-	.name	= "dma1",
-	.start	= 0x0000,
-	.end	= 0x000f
-}, {
-	.name	= "dma low page",
-	.start	= 0x0080,
-	.end 	= 0x008f
-}, {
-	.name	= "dma2",
-	.start	= 0x00c0,
-	.end	= 0x00df
-}, {
-	.name	= "dma high page",
-	.start	= 0x0480,
-	.end	= 0x048f
-} };
-
-static dma_t isa_dma[8];
-
-/*
- * ISA DMA always starts at channel 0
- */
-void __init isa_init_dma(void)
-{
-	/*
-	 * Try to autodetect presence of an ISA DMA controller.
-	 * We do some minimal initialisation, and check that
-	 * channel 0's DMA address registers are writeable.
-	 */
-	outb(0xff, 0x0d);
-	outb(0xff, 0xda);
-
-	/*
-	 * Write high and low address, and then read them back
-	 * in the same order.
-	 */
-	outb(0x55, 0x00);
-	outb(0xaa, 0x00);
-
-	if (inb(0) == 0x55 && inb(0) == 0xaa) {
-		unsigned int chan, i;
-
-		for (chan = 0; chan < 8; chan++) {
-			isa_dma[chan].d_ops = &isa_dma_ops;
-			isa_disable_dma(chan, NULL);
-		}
-
-		outb(0x40, 0x0b);
-		outb(0x41, 0x0b);
-		outb(0x42, 0x0b);
-		outb(0x43, 0x0b);
-
-		outb(0xc0, 0xd6);
-		outb(0x41, 0xd6);
-		outb(0x42, 0xd6);
-		outb(0x43, 0xd6);
-
-		outb(0, 0xd4);
-
-		outb(0x10, 0x08);
-		outb(0x10, 0xd0);
-
-		/*
-		 * Is this correct?  According to my documentation, it
-		 * doesn't appear to be.  It should be:
-		 *  outb(0x3f, 0x40b); outb(0x3f, 0x4d6);
-		 */
-		outb(0x30, 0x40b);
-		outb(0x31, 0x40b);
-		outb(0x32, 0x40b);
-		outb(0x33, 0x40b);
-		outb(0x31, 0x4d6);
-		outb(0x32, 0x4d6);
-		outb(0x33, 0x4d6);
-
-		for (i = 0; i < ARRAY_SIZE(dma_resources); i++)
-			request_resource(&ioport_resource, dma_resources + i);
-
-		for (chan = 0; chan < 8; chan++) {
-			int ret = isa_dma_add(chan, &isa_dma[chan]);
-			if (ret)
-				pr_err("ISADMA%u: unable to register: %d\n",
-				       chan, ret);
-		}
-
-		request_dma(DMA_ISA_CASCADE, "cascade");
-	}
-}
diff --git a/arch/arm/mach-footbridge/Kconfig b/arch/arm/mach-footbridge/Kconfig
index 3497ea8e91e3..1a3676109654 100644
--- a/arch/arm/mach-footbridge/Kconfig
+++ b/arch/arm/mach-footbridge/Kconfig
@@ -48,7 +48,7 @@ config FOOTBRIDGE
 	def_bool y
 	select ARCH_HAS_PHYS_TO_DMA
 	select ARCH_MIGHT_HAVE_PC_SERIO
-	select ISA_DMA
+	select ISA_DMA_API
 
 config ARCH_EBSA285
 	bool
diff --git a/arch/arm/mach-footbridge/Makefile b/arch/arm/mach-footbridge/Makefile
index 30bae6684dce..55d570739f19 100644
--- a/arch/arm/mach-footbridge/Makefile
+++ b/arch/arm/mach-footbridge/Makefile
@@ -5,7 +5,7 @@
 
 # Object file lists.
 
-obj-y			:= common.o dma.o isa-irq.o
+obj-y			:= common.o isa-irq.o isa.o isa-rtc.o dma-isa.o
 
 pci-y			+= dc21285.o
 pci-$(CONFIG_ARCH_CATS) += cats-pci.o
@@ -18,4 +18,3 @@ obj-$(CONFIG_ARCH_NETWINDER) += netwinder-hw.o isa-timer.o
 
 obj-$(CONFIG_PCI)	+=$(pci-y)
 
-obj-$(CONFIG_ISA)	+= isa.o isa-rtc.o
diff --git a/arch/arm/mach-footbridge/dma-isa.c b/arch/arm/mach-footbridge/dma-isa.c
new file mode 100644
index 000000000000..0fc0705fd58b
--- /dev/null
+++ b/arch/arm/mach-footbridge/dma-isa.c
@@ -0,0 +1,226 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ *  Copyright (C) 1999-2000 Russell King
+ *
+ *  ISA DMA primitives
+ *  Taken from various sources, including:
+ *   linux/include/asm/dma.h: Defines for using and allocating dma channels.
+ *     Written by Hennus Bergman, 1992.
+ *     High DMA channel support & info by Hannu Savolainen and John Boyd,
+ *     Nov. 1992.
+ *   arch/arm/kernel/dma-ebsa285.c
+ *   Copyright (C) 1998 Phil Blundell
+ */
+#include <linux/ioport.h>
+#include <linux/init.h>
+#include <linux/dma-mapping.h>
+#include <linux/io.h>
+
+#include <asm/dma.h>
+#include <asm/mach/dma.h>
+
+#define ISA_DMA_MASK		0
+#define ISA_DMA_MODE		1
+#define ISA_DMA_CLRFF		2
+#define ISA_DMA_PGHI		3
+#define ISA_DMA_PGLO		4
+#define ISA_DMA_ADDR		5
+#define ISA_DMA_COUNT		6
+
+static unsigned int isa_dma_port[8][7] = {
+	/* MASK   MODE   CLRFF  PAGE_HI PAGE_LO ADDR COUNT */
+	{  0x0a,  0x0b,  0x0c,  0x487,  0x087,  0x00, 0x01 },
+	{  0x0a,  0x0b,  0x0c,  0x483,  0x083,  0x02, 0x03 },
+	{  0x0a,  0x0b,  0x0c,  0x481,  0x081,  0x04, 0x05 },
+	{  0x0a,  0x0b,  0x0c,  0x482,  0x082,  0x06, 0x07 },
+	{  0xd4,  0xd6,  0xd8,  0x000,  0x000,  0xc0, 0xc2 },
+	{  0xd4,  0xd6,  0xd8,  0x48b,  0x08b,  0xc4, 0xc6 },
+	{  0xd4,  0xd6,  0xd8,  0x489,  0x089,  0xc8, 0xca },
+	{  0xd4,  0xd6,  0xd8,  0x48a,  0x08a,  0xcc, 0xce }
+};
+
+static int isa_get_dma_residue(unsigned int chan, dma_t *dma)
+{
+	unsigned int io_port = isa_dma_port[chan][ISA_DMA_COUNT];
+	int count;
+
+	count = 1 + inb(io_port);
+	count |= inb(io_port) << 8;
+
+	return chan < 4 ? count : (count << 1);
+}
+
+static struct device isa_dma_dev = {
+	.init_name		= "fallback device",
+	.coherent_dma_mask	= ~(dma_addr_t)0,
+	.dma_mask		= &isa_dma_dev.coherent_dma_mask,
+};
+
+static void isa_enable_dma(unsigned int chan, dma_t *dma)
+{
+	if (dma->invalid) {
+		unsigned long address, length;
+		unsigned int mode;
+		enum dma_data_direction direction;
+
+		mode = (chan & 3) | dma->dma_mode;
+		switch (dma->dma_mode & DMA_MODE_MASK) {
+		case DMA_MODE_READ:
+			direction = DMA_FROM_DEVICE;
+			break;
+
+		case DMA_MODE_WRITE:
+			direction = DMA_TO_DEVICE;
+			break;
+
+		case DMA_MODE_CASCADE:
+			direction = DMA_BIDIRECTIONAL;
+			break;
+
+		default:
+			direction = DMA_NONE;
+			break;
+		}
+
+		if (!dma->sg) {
+			/*
+			 * Cope with ISA-style drivers which expect cache
+			 * coherence.
+			 */
+			dma->sg = &dma->buf;
+			dma->sgcount = 1;
+			dma->buf.length = dma->count;
+			dma->buf.dma_address = dma_map_single(&isa_dma_dev,
+				dma->addr, dma->count,
+				direction);
+		}
+
+		address = dma->buf.dma_address;
+		length  = dma->buf.length - 1;
+
+		outb(address >> 16, isa_dma_port[chan][ISA_DMA_PGLO]);
+		outb(address >> 24, isa_dma_port[chan][ISA_DMA_PGHI]);
+
+		if (chan >= 4) {
+			address >>= 1;
+			length >>= 1;
+		}
+
+		outb(0, isa_dma_port[chan][ISA_DMA_CLRFF]);
+
+		outb(address, isa_dma_port[chan][ISA_DMA_ADDR]);
+		outb(address >> 8, isa_dma_port[chan][ISA_DMA_ADDR]);
+
+		outb(length, isa_dma_port[chan][ISA_DMA_COUNT]);
+		outb(length >> 8, isa_dma_port[chan][ISA_DMA_COUNT]);
+
+		outb(mode, isa_dma_port[chan][ISA_DMA_MODE]);
+		dma->invalid = 0;
+	}
+	outb(chan & 3, isa_dma_port[chan][ISA_DMA_MASK]);
+}
+
+static void isa_disable_dma(unsigned int chan, dma_t *dma)
+{
+	outb(chan | 4, isa_dma_port[chan][ISA_DMA_MASK]);
+}
+
+static struct dma_ops isa_dma_ops = {
+	.type		= "ISA",
+	.enable		= isa_enable_dma,
+	.disable	= isa_disable_dma,
+	.residue	= isa_get_dma_residue,
+};
+
+static struct resource dma_resources[] = { {
+	.name	= "dma1",
+	.start	= 0x0000,
+	.end	= 0x000f
+}, {
+	.name	= "dma low page",
+	.start	= 0x0080,
+	.end 	= 0x008f
+}, {
+	.name	= "dma2",
+	.start	= 0x00c0,
+	.end	= 0x00df
+}, {
+	.name	= "dma high page",
+	.start	= 0x0480,
+	.end	= 0x048f
+} };
+
+static dma_t isa_dma[8];
+
+/*
+ * ISA DMA always starts at channel 0
+ */
+static int __init isa_dma_init(void)
+{
+	/*
+	 * Try to autodetect presence of an ISA DMA controller.
+	 * We do some minimal initialisation, and check that
+	 * channel 0's DMA address registers are writeable.
+	 */
+	outb(0xff, 0x0d);
+	outb(0xff, 0xda);
+
+	/*
+	 * Write high and low address, and then read them back
+	 * in the same order.
+	 */
+	outb(0x55, 0x00);
+	outb(0xaa, 0x00);
+
+	if (inb(0) == 0x55 && inb(0) == 0xaa) {
+		unsigned int chan, i;
+
+		for (chan = 0; chan < 8; chan++) {
+			isa_dma[chan].d_ops = &isa_dma_ops;
+			isa_disable_dma(chan, NULL);
+		}
+
+		outb(0x40, 0x0b);
+		outb(0x41, 0x0b);
+		outb(0x42, 0x0b);
+		outb(0x43, 0x0b);
+
+		outb(0xc0, 0xd6);
+		outb(0x41, 0xd6);
+		outb(0x42, 0xd6);
+		outb(0x43, 0xd6);
+
+		outb(0, 0xd4);
+
+		outb(0x10, 0x08);
+		outb(0x10, 0xd0);
+
+		/*
+		 * Is this correct?  According to my documentation, it
+		 * doesn't appear to be.  It should be:
+		 *  outb(0x3f, 0x40b); outb(0x3f, 0x4d6);
+		 */
+		outb(0x30, 0x40b);
+		outb(0x31, 0x40b);
+		outb(0x32, 0x40b);
+		outb(0x33, 0x40b);
+		outb(0x31, 0x4d6);
+		outb(0x32, 0x4d6);
+		outb(0x33, 0x4d6);
+
+		for (i = 0; i < ARRAY_SIZE(dma_resources); i++)
+			request_resource(&ioport_resource, dma_resources + i);
+
+		for (chan = 0; chan < 8; chan++) {
+			int ret = isa_dma_add(chan, &isa_dma[chan]);
+			if (ret)
+				pr_err("ISADMA%u: unable to register: %d\n",
+				       chan, ret);
+		}
+
+		request_dma(DMA_ISA_CASCADE, "cascade");
+	}
+
+	return 0;
+}
+core_initcall(isa_dma_init);
diff --git a/arch/arm/mach-footbridge/dma.c b/arch/arm/mach-footbridge/dma.c
deleted file mode 100644
index 228757c8e06f..000000000000
--- a/arch/arm/mach-footbridge/dma.c
+++ /dev/null
@@ -1,57 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- *  linux/arch/arm/kernel/dma-ebsa285.c
- *
- *  Copyright (C) 1998 Phil Blundell
- *
- * DMA functions specific to EBSA-285/CATS architectures
- *
- *  Changelog:
- *   09-Nov-1998 RMK	Split out ISA DMA functions to dma-isa.c
- *   17-Mar-1999 RMK	Allow any EBSA285-like architecture to have
- *			ISA DMA controllers.
- */
-#include <linux/init.h>
-#include <linux/io.h>
-#include <linux/spinlock.h>
-#include <linux/scatterlist.h>
-
-#include <asm/dma.h>
-
-#include <asm/mach/dma.h>
-#include <asm/hardware/dec21285.h>
-
-#if 0
-static int fb_dma_request(unsigned int chan, dma_t *dma)
-{
-	return -EINVAL;
-}
-
-static void fb_dma_enable(unsigned int chan, dma_t *dma)
-{
-}
-
-static void fb_dma_disable(unsigned int chan, dma_t *dma)
-{
-}
-
-static struct dma_ops fb_dma_ops = {
-	.type		= "fb",
-	.request	= fb_dma_request,
-	.enable		= fb_dma_enable,
-	.disable	= fb_dma_disable,
-};
-#endif
-
-static int __init fb_dma_init(void)
-{
-#if 0
-	dma[_DC21285_DMA(0)].d_ops = &fb_dma_ops;
-	dma[_DC21285_DMA(1)].d_ops = &fb_dma_ops;
-#endif
-#ifdef CONFIG_ISA_DMA
-	isa_init_dma();
-#endif
-	return 0;
-}
-core_initcall(fb_dma_init);
diff --git a/arch/arm/mach-footbridge/include/mach/isa-dma.h b/arch/arm/mach-footbridge/include/mach/isa-dma.h
index 8a1b991076e1..b10731a1f66a 100644
--- a/arch/arm/mach-footbridge/include/mach/isa-dma.h
+++ b/arch/arm/mach-footbridge/include/mach/isa-dma.h
@@ -10,17 +10,9 @@
 #ifndef __ASM_ARCH_DMA_H
 #define __ASM_ARCH_DMA_H
 
-/*
- * The 21285 has two internal DMA channels; we call these 8 and 9.
- * On CATS hardware we have an additional eight ISA dma channels
- * numbered 0..7.
- */
-#define _ISA_DMA(x)		(0+(x))
-#define _DC21285_DMA(x)		(8+(x))
-
-#define MAX_DMA_CHANNELS	10
+#define MAX_DMA_CHANNELS	8
 
-#define DMA_FLOPPY		_ISA_DMA(2)
-#define DMA_ISA_CASCADE		_ISA_DMA(4)
+#define DMA_FLOPPY		(2)
+#define DMA_ISA_CASCADE		(4)
 
 #endif /* _ASM_ARCH_DMA_H */
-- 
cgit v1.2.3


From 01bf00c52e9ea76862e8a12a0838006be1f2cb8f Mon Sep 17 00:00:00 2001
From: William Zhang
Date: Wed, 3 Aug 2022 10:54:54 -0700
Subject: MAINTAINERS: Add BCM4908 maintainer to BCMBCA entry

Since BCM4908 SoC support is merged into ARCH_BCMBCA, add BCM4908
maintainer Rafal to bcmbca maintainer list.

Signed-off-by: William Zhang <william.zhang@broadcom.com>
Link: https://lore.kernel.org/r/20220803175455.47638-9-william.zhang@broadcom.com
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
---
 MAINTAINERS | 1 +
 1 file changed, 1 insertion(+)

diff --git a/MAINTAINERS b/MAINTAINERS
index 8a5012ba6ff9..23142f17c99f 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -3948,6 +3948,7 @@ M:	William Zhang <william.zhang@broadcom.com>
 M:	Anand Gore <anand.gore@broadcom.com>
 M:	Kursad Oney <kursad.oney@broadcom.com>
 M:	Florian Fainelli <f.fainelli@gmail.com>
+M:	Rafał Miłecki <rafal@milecki.pl>
 R:	Broadcom internal kernel review list <bcm-kernel-feedback-list@broadcom.com>
 L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
 S:	Maintained
-- 
cgit v1.2.3


From be7f3f901c619e24c93b8044c074306feedd8ee9 Mon Sep 17 00:00:00 2001
From: Arnd Bergmann
Date: Thu, 25 Aug 2022 10:51:42 +0200
Subject: ARM: footbridge: remove custom DMA address handling

Footbridge is the last Arm platform that has its own
__virt_to_bus()/__bus_to_virt()/phys_to_dma()/dma_to_phys() abstraction,
but this is just a simple offset now.

For PCI devices, the offset that is programmed into the PCI bridge must
also be set in each device using dma_direct_set_offset().  As Arm does
not have a pcibios_bus_add_device() helper yet, just use a bus notifier
for this.

For the ISA DMA, drivers now pass a non-translated physical address into
set_dma_addr(), so they have to be converted back with the corresponding
isa_bus_to_virt() function and then into the correct bus address with
the offset using the isa_dma_dev.

Tested-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 arch/arm/include/asm/dma-direct.h                  |  1 -
 arch/arm/include/asm/dma.h                         |  2 +-
 arch/arm/include/asm/hardware/dec21285.h           |  7 +++++++
 arch/arm/include/asm/memory.h                      | 11 -----------
 arch/arm/mach-footbridge/Kconfig                   |  1 -
 arch/arm/mach-footbridge/common.c                  | 10 ----------
 arch/arm/mach-footbridge/dc21285.c                 | 21 ++++++++++++++++++++-
 arch/arm/mach-footbridge/dma-isa.c                 |  4 ++++
 arch/arm/mach-footbridge/include/mach/dma-direct.h |  8 --------
 arch/arm/mach-footbridge/include/mach/memory.h     |  9 ---------
 10 files changed, 32 insertions(+), 42 deletions(-)
 delete mode 100644 arch/arm/include/asm/dma-direct.h
 delete mode 100644 arch/arm/mach-footbridge/include/mach/dma-direct.h

diff --git a/arch/arm/include/asm/dma-direct.h b/arch/arm/include/asm/dma-direct.h
deleted file mode 100644
index 4f7bcde03abb..000000000000
--- a/arch/arm/include/asm/dma-direct.h
+++ /dev/null
@@ -1 +0,0 @@
-#include <mach/dma-direct.h>
diff --git a/arch/arm/include/asm/dma.h b/arch/arm/include/asm/dma.h
index 05f29a72150b..c6aded1b069c 100644
--- a/arch/arm/include/asm/dma.h
+++ b/arch/arm/include/asm/dma.h
@@ -106,7 +106,7 @@ extern void set_dma_sg(unsigned int chan, struct scatterlist *sg, int nr_sg);
  */
 extern void __set_dma_addr(unsigned int chan, void *addr);
 #define set_dma_addr(chan, addr)				\
-	__set_dma_addr(chan, (void *)__bus_to_virt(addr))
+	__set_dma_addr(chan, (void *)isa_bus_to_virt(addr))
 
 /* Set the DMA byte count for this channel
  *
diff --git a/arch/arm/include/asm/hardware/dec21285.h b/arch/arm/include/asm/hardware/dec21285.h
index eee390e8d4dc..894f2a635cbb 100644
--- a/arch/arm/include/asm/hardware/dec21285.h
+++ b/arch/arm/include/asm/hardware/dec21285.h
@@ -22,6 +22,13 @@
 #define DC21285_IO(x)		(x)
 #endif
 
+/*
+ * The footbridge is programmed to expose the system RAM at 0xe0000000.
+ * The requirement is that the RAM isn't placed at bus address 0, which
+ * would clash with VGA cards.
+ */
+#define BUS_OFFSET 0xe0000000
+
 #define CSR_PCICMD		DC21285_IO(0x0004)
 #define CSR_CLASSREV		DC21285_IO(0x0008)
 #define CSR_PCICACHELINESIZE	DC21285_IO(0x000c)
diff --git a/arch/arm/include/asm/memory.h b/arch/arm/include/asm/memory.h
index a55a9038abc8..d8eef4bd8c71 100644
--- a/arch/arm/include/asm/memory.h
+++ b/arch/arm/include/asm/memory.h
@@ -369,17 +369,6 @@ static inline unsigned long __virt_to_idmap(unsigned long x)
 
 #define virt_to_idmap(x)	__virt_to_idmap((unsigned long)(x))
 
-/*
- * Virtual <-> DMA view memory address translations
- * Again, these are *only* valid on the kernel direct mapped RAM
- * memory.  Use of these is *deprecated* (and that doesn't mean
- * use the __ prefixed forms instead.)  See dma-mapping.h.
- */
-#ifndef __virt_to_bus
-#define __virt_to_bus	__virt_to_phys
-#define __bus_to_virt	__phys_to_virt
-#endif
-
 /*
  * Conversion between a struct page and a physical address.
  *
diff --git a/arch/arm/mach-footbridge/Kconfig b/arch/arm/mach-footbridge/Kconfig
index 1a3676109654..b7a4e403ba0f 100644
--- a/arch/arm/mach-footbridge/Kconfig
+++ b/arch/arm/mach-footbridge/Kconfig
@@ -46,7 +46,6 @@ endmenu
 # Footbridge support
 config FOOTBRIDGE
 	def_bool y
-	select ARCH_HAS_PHYS_TO_DMA
 	select ARCH_MIGHT_HAVE_PC_SERIO
 	select ISA_DMA_API
 
diff --git a/arch/arm/mach-footbridge/common.c b/arch/arm/mach-footbridge/common.c
index 9483eccea5ae..629e4676ed77 100644
--- a/arch/arm/mach-footbridge/common.c
+++ b/arch/arm/mach-footbridge/common.c
@@ -281,13 +281,3 @@ void footbridge_restart(enum reboot_mode mode, const char *cmd)
 		*CSR_SA110_CNTL |= (1 << 13);
 	}
 }
-
-dma_addr_t phys_to_dma(struct device *dev, phys_addr_t paddr)
-{
-	return paddr + (BUS_OFFSET - PHYS_OFFSET);
-}
-
-phys_addr_t dma_to_phys(struct device *dev, dma_addr_t dev_addr)
-{
-	return dev_addr - (BUS_OFFSET - PHYS_OFFSET);
-}
diff --git a/arch/arm/mach-footbridge/dc21285.c b/arch/arm/mach-footbridge/dc21285.c
index 372600bc15c8..f8920d0010de 100644
--- a/arch/arm/mach-footbridge/dc21285.c
+++ b/arch/arm/mach-footbridge/dc21285.c
@@ -5,6 +5,7 @@
  *  Copyright (C) 1998-2001 Russell King
  *  Copyright (C) 1998-2000 Phil Blundell
  */
+#include <linux/dma-map-ops.h>
 #include <linux/kernel.h>
 #include <linux/pci.h>
 #include <linux/interrupt.h>
@@ -241,6 +242,22 @@ static irqreturn_t dc21285_parity_irq(int irq, void *dev_id)
 	return IRQ_HANDLED;
 }
 
+static int dc21285_pci_bus_notifier(struct notifier_block *nb,
+				    unsigned long action,
+				    void *data)
+{
+	if (action != BUS_NOTIFY_ADD_DEVICE)
+		return NOTIFY_DONE;
+
+	dma_direct_set_offset(data, PHYS_OFFSET, BUS_OFFSET, SZ_256M);
+
+	return NOTIFY_OK;
+}
+
+static struct notifier_block dc21285_pci_bus_nb = {
+	.notifier_call = dc21285_pci_bus_notifier,
+};
+
 int __init dc21285_setup(int nr, struct pci_sys_data *sys)
 {
 	struct resource *res;
@@ -266,6 +283,8 @@ int __init dc21285_setup(int nr, struct pci_sys_data *sys)
 	pci_add_resource_offset(&sys->resources, &res[0], sys->mem_offset);
 	pci_add_resource_offset(&sys->resources, &res[1], sys->mem_offset);
 
+	bus_register_notifier(&pci_bus_type, &dc21285_pci_bus_nb);
+
 	return 1;
 }
 
@@ -329,7 +348,7 @@ void __init dc21285_preinit(void)
 	 */
 	*CSR_PCICSRBASE       = 0xf4000000;
 	*CSR_PCICSRIOBASE     = 0;
-	*CSR_PCISDRAMBASE     = __virt_to_bus(PAGE_OFFSET);
+	*CSR_PCISDRAMBASE     = BUS_OFFSET;
 	*CSR_PCIROMBASE       = 0;
 	*CSR_PCICMD = PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER |
 		      PCI_COMMAND_INVALIDATE | PCICMD_ERROR_BITS;
diff --git a/arch/arm/mach-footbridge/dma-isa.c b/arch/arm/mach-footbridge/dma-isa.c
index 0fc0705fd58b..937f5376d5e7 100644
--- a/arch/arm/mach-footbridge/dma-isa.c
+++ b/arch/arm/mach-footbridge/dma-isa.c
@@ -11,6 +11,7 @@
  *   arch/arm/kernel/dma-ebsa285.c
  *   Copyright (C) 1998 Phil Blundell
  */
+#include <linux/dma-map-ops.h>
 #include <linux/ioport.h>
 #include <linux/init.h>
 #include <linux/dma-mapping.h>
@@ -18,6 +19,7 @@
 
 #include <asm/dma.h>
 #include <asm/mach/dma.h>
+#include <asm/hardware/dec21285.h>
 
 #define ISA_DMA_MASK		0
 #define ISA_DMA_MODE		1
@@ -221,6 +223,8 @@ static int __init isa_dma_init(void)
 		request_dma(DMA_ISA_CASCADE, "cascade");
 	}
 
+	dma_direct_set_offset(&isa_dma_dev, PHYS_OFFSET, BUS_OFFSET, SZ_256M);
+
 	return 0;
 }
 core_initcall(isa_dma_init);
diff --git a/arch/arm/mach-footbridge/include/mach/dma-direct.h b/arch/arm/mach-footbridge/include/mach/dma-direct.h
deleted file mode 100644
index 01f9e8367c00..000000000000
--- a/arch/arm/mach-footbridge/include/mach/dma-direct.h
+++ /dev/null
@@ -1,8 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef MACH_FOOTBRIDGE_DMA_DIRECT_H
-#define MACH_FOOTBRIDGE_DMA_DIRECT_H 1
-
-dma_addr_t phys_to_dma(struct device *dev, phys_addr_t paddr);
-phys_addr_t dma_to_phys(struct device *dev, dma_addr_t dev_addr);
-
-#endif /* MACH_FOOTBRIDGE_DMA_DIRECT_H */
diff --git a/arch/arm/mach-footbridge/include/mach/memory.h b/arch/arm/mach-footbridge/include/mach/memory.h
index 8f0ca8e8b37e..9516877667d7 100644
--- a/arch/arm/mach-footbridge/include/mach/memory.h
+++ b/arch/arm/mach-footbridge/include/mach/memory.h
@@ -16,15 +16,6 @@
 #ifndef __ASM_ARCH_MEMORY_H
 #define __ASM_ARCH_MEMORY_H
 
-/*
- * The footbridge is programmed to expose the system RAM at 0xe0000000.
- * The requirement is that the RAM isn't placed at bus address 0, which
- * would clash with VGA cards.
- */
-#define BUS_OFFSET		0xe0000000
-#define __virt_to_bus(x)	((x) + (BUS_OFFSET - PAGE_OFFSET))
-#define __bus_to_virt(x)	((x) - (BUS_OFFSET - PAGE_OFFSET))
-
 /*
  * Cache flushing area.
  */
-- 
cgit v1.2.3


From 47723de8d7555edf774aad543f92f930736d204f Mon Sep 17 00:00:00 2001
From: Arnd Bergmann
Date: Fri, 16 Sep 2022 21:53:09 +0200
Subject: ARM: disallow PCI with MMU=n again

My cleanup patch allowed enabling PCI on MMU-less builds,
which breaks for at least one driver and is never required:

   In file included from include/linux/irqchip/arm-gic-v3.h:604,
                    from drivers/pci/controller/pcie-iproc.c:17:
   arch/arm/include/asm/arch_gicv3.h: In function 'write_ICC_EOIR1_EL1':
arch/arm/include/asm/arch_gicv3.h:44:9: error: implicit declaration of function 'write_sysreg' [-Werror=implicit-function-declaration]

Fixes: 6fd09c9afa49 ("ARM: Kconfig: clean up platform selection")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 arch/arm/Kconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index e28e3d09d97d..4edb6b4a87c4 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -110,7 +110,7 @@ config ARM
 	select HAVE_MOD_ARCH_SPECIFIC
 	select HAVE_NMI
 	select HAVE_OPTPROBES if !THUMB2_KERNEL
-	select HAVE_PCI
+	select HAVE_PCI if MMU
 	select HAVE_PERF_EVENTS
 	select HAVE_PERF_REGS
 	select HAVE_PERF_USER_STACK_DUMP
-- 
cgit v1.2.3


From bb81684d2d99234ff7a5807554315fb89a933959 Mon Sep 17 00:00:00 2001
From: Lad Prabhakar
Date: Fri, 16 Sep 2022 00:36:40 +0100
Subject: arm64: renesas: Drop selecting SOC_BUS

Don't automatically select the SOC_BUS config option as we already have
automatically selected it as part of the SOC_RENESAS config option [0]
as renesas-soc.c [1] uses the APIs provided by SOC_BUS config option.

[0] drivers/soc/renesas/Kconfig
[1] drivers/soc/renesas/renesas-soc.c

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Link: https://lore.kernel.org/r/20220915233640.415305-1-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
---
 arch/arm64/Kconfig.platforms | 1 -
 1 file changed, 1 deletion(-)

diff --git a/arch/arm64/Kconfig.platforms b/arch/arm64/Kconfig.platforms
index 74e9e9de3759..06d1c25cd491 100644
--- a/arch/arm64/Kconfig.platforms
+++ b/arch/arm64/Kconfig.platforms
@@ -243,7 +243,6 @@ config ARCH_RENESAS
 	bool "Renesas SoC Platforms"
 	select GPIOLIB
 	select PINCTRL
-	select SOC_BUS
 	help
 	  This enables support for the ARMv8 based Renesas SoCs.
 
-- 
cgit v1.2.3


From c2ce1e734282662c0b3117e4f26b831d30370bcb Mon Sep 17 00:00:00 2001
From: Lad Prabhakar
Date: Fri, 16 Sep 2022 00:38:52 +0100
Subject: ARM: shmobile: Drop selecting SOC_BUS

Don't automatically select the SOC_BUS config option as we already have
automatically selected it as part of the SOC_RENESAS config option [0]
as renesas-soc.c [1] uses the APIs provided by SOC_BUS config option.

[0] drivers/soc/renesas/Kconfig
[1] drivers/soc/renesas/renesas-soc.c

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Link: https://lore.kernel.org/r/20220915233852.415407-1-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
---
 arch/arm/mach-shmobile/Kconfig | 1 -
 1 file changed, 1 deletion(-)

diff --git a/arch/arm/mach-shmobile/Kconfig b/arch/arm/mach-shmobile/Kconfig
index 50909c4b95b2..37f862f13c8d 100644
--- a/arch/arm/mach-shmobile/Kconfig
+++ b/arch/arm/mach-shmobile/Kconfig
@@ -6,5 +6,4 @@ menuconfig ARCH_RENESAS
 	select GPIOLIB
 	select NO_IOPORT_MAP
 	select PINCTRL
-	select SOC_BUS
 	select ZONE_DMA if ARM_LPAE
-- 
cgit v1.2.3


From 63872304bdb3decd5454f4dd210c25395278ed13 Mon Sep 17 00:00:00 2001
From: Arnd Bergmann
Date: Fri, 23 Sep 2022 21:55:50 +0200
Subject: ARM: orion: fix include path

Now that CONFIG_ARCH_MULTIPLATFORM can be disabled anywhere,
there is a build failure for plat-orion:

arch/arm/plat-orion/irq.c:19:10: fatal error: plat/irq.h: No such file or directory

Make the include path unconditional.

Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 arch/arm/plat-orion/Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/plat-orion/Makefile b/arch/arm/plat-orion/Makefile
index 4e3f25de13c1..830b0be038c6 100644
--- a/arch/arm/plat-orion/Makefile
+++ b/arch/arm/plat-orion/Makefile
@@ -2,7 +2,7 @@
 #
 # Makefile for the linux kernel.
 #
-ccflags-$(CONFIG_ARCH_MULTIPLATFORM) := -I$(srctree)/$(src)/include
+ccflags-y := -I$(srctree)/$(src)/include
 
 orion-gpio-$(CONFIG_GPIOLIB)      += gpio.o
 obj-$(CONFIG_PLAT_ORION_LEGACY)   += irq.o pcie.o time.o common.o mpp.o
-- 
cgit v1.2.3


From a4d1846512e12f9e84be63b3f2f2165e4d0d2d1e Mon Sep 17 00:00:00 2001
From: Uwe Kleine-König
Date: Mon, 26 Sep 2022 12:40:11 +0200
Subject: pxa: Drop if with an always false condition

The remove callback is only called after probe completed successfully.
In this case platform_set_drvdata() was called with a non-NULL argument
and so ssp is never NULL.

Also note that returning an error code from a remove callback doesn't
result in the device staying bound. It's still removed and devm
callbacks are called. So the memory that ssp pointed to during probe,
goes away without the node being removed from ssp_list. The probable
result of an early exit is accessing freed memory when the list is
walked the next time.

Signed-off-by: Uwe Kleine-König <(address hidden)>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 drivers/soc/pxa/ssp.c | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/drivers/soc/pxa/ssp.c b/drivers/soc/pxa/ssp.c
index 563440315acd..93449fb3519e 100644
--- a/drivers/soc/pxa/ssp.c
+++ b/drivers/soc/pxa/ssp.c
@@ -180,11 +180,7 @@ static int pxa_ssp_probe(struct platform_device *pdev)
 
 static int pxa_ssp_remove(struct platform_device *pdev)
 {
-	struct ssp_device *ssp;
-
-	ssp = platform_get_drvdata(pdev);
-	if (ssp == NULL)
-		return -ENODEV;
+	struct ssp_device *ssp = platform_get_drvdata(pdev);
 
 	mutex_lock(&ssp_lock);
 	list_del(&ssp->node);
-- 
cgit v1.2.3


From c1ce7edcb69b61ea06c317e177518ab6bea7453a Mon Sep 17 00:00:00 2001
From: Gaosheng Cui
Date: Mon, 26 Sep 2022 12:43:54 +0200
Subject: ARM: s3c: remove orphan declarations from arch/arm/mach-s3c/devs.h

s3c64xx_device_spi1 and s3c64xx_device_spi2 were removed by
commit f1ba938e4f98 ("spi: s3c64xx: Delete unused boardfile
helpers"), so remove the declaration, too.

Signed-off-by: Gaosheng Cui <cuigaosheng1@huawei.com>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20220914034615.1240860-3-cuigaosheng1@huawei.com
Link: https://lore.kernel.org/r/20220926104354.118578-3-krzysztof.kozlowski@linaro.org'
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 arch/arm/mach-s3c/devs.h | 2 --
 1 file changed, 2 deletions(-)

diff --git a/arch/arm/mach-s3c/devs.h b/arch/arm/mach-s3c/devs.h
index 02b0c5750572..991b9b2006a1 100644
--- a/arch/arm/mach-s3c/devs.h
+++ b/arch/arm/mach-s3c/devs.h
@@ -33,8 +33,6 @@ extern struct platform_device s3c64xx_device_onenand1;
 extern struct platform_device s3c64xx_device_pcm0;
 extern struct platform_device s3c64xx_device_pcm1;
 extern struct platform_device s3c64xx_device_spi0;
-extern struct platform_device s3c64xx_device_spi1;
-extern struct platform_device s3c64xx_device_spi2;
 
 extern struct platform_device s3c_device_adc;
 extern struct platform_device s3c_device_cfcon;
-- 
cgit v1.2.3


From 502647105a1d0302d5fc32814da45bb4772becda Mon Sep 17 00:00:00 2001
From: Geert Uytterhoeven
Date: Tue, 27 Sep 2022 15:26:26 +0200
Subject: ARM: Drop CMDLINE_FORCE dependency on !ARCH_MULTIPLATFORM

On older platforms that boot an image with an appended DTB, or where
the boot loader has no support for updating chosen/bootargs, it is
common to rely on CMDLINE_FORCE.

While a fixed command line can make the kernel unbootable on other
platforms, it is not guaranteed to cause that.  E.g. all Renesas boards
use the same chosen/bootargs in upstream DTS, which works fine if your
DHCP server hands out proper nfsroot parameters.

Fixes: 84fc863606239d8b ("ARM: make ARCH_MULTIPLATFORM user-visible")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 arch/arm/Kconfig | 1 -
 1 file changed, 1 deletion(-)

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 4edb6b4a87c4..ad808e92066e 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -1616,7 +1616,6 @@ 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.
-- 
cgit v1.2.3


From 136f4b1ec7c962ee37a787e095fd37b058d72bd3 Mon Sep 17 00:00:00 2001
From: Geert Uytterhoeven
Date: Tue, 27 Sep 2022 15:28:26 +0200
Subject: ARM: Drop CMDLINE_* dependency on ATAGS

On arm32, the configuration options to specify the kernel command line
type depend on ATAGS.  However, the actual CMDLINE cofiguration option
does not depend on ATAGS, and the code that handles this is not specific
to ATAGS (see drivers/of/fdt.c:early_init_dt_scan_chosen()).

Hence users who desire to override the kernel command line on arm32 must
enable support for ATAGS, even on a pure-DT system.  Other architectures
(arm64, loongarch, microblaze, nios2, powerpc, and riscv) do not impose
such a restriction.

Hence drop the dependency on ATAGS.

Fixes: bd51e2f595580fb6 ("ARM: 7506/1: allow for ATAGS to be configured out when DT support is selected")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 arch/arm/Kconfig | 1 -
 1 file changed, 1 deletion(-)

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index ad808e92066e..22dc1d6936bc 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -1599,7 +1599,6 @@ config CMDLINE
 choice
 	prompt "Kernel command line type" if CMDLINE != ""
 	default CMDLINE_FROM_BOOTLOADER
-	depends on ATAGS
 
 config CMDLINE_FROM_BOOTLOADER
 	bool "Use bootloader kernel arguments if available"
-- 
cgit v1.2.3


From ef2fb84c130b08ce2a05359c35bc4e9541712375 Mon Sep 17 00:00:00 2001
From: Juerg Haefliger
Date: Wed, 28 Sep 2022 12:29:26 +0930
Subject: ARM: aspeed: Kconfig: Fix indentation

The convention for indentation seems to be a single tab. Help text is
further indented by an additional two whitespaces. Fix the lines that
violate these rules.

Signed-off-by: Juerg Haefliger <juergh@canonical.com>
Signed-off-by: Joel Stanley <joel@jms.id.au>
Acked-by: Andrew Jeffery <andrew@aj.id.au>
Link: https://lore.kernel.org/r/20220523060532.7864-1-juergh@canonical.com
Link: https://lore.kernel.org/r/20220928025926.2592030-1-joel@jms.id.au'
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 arch/arm/mach-aspeed/Kconfig | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/arch/arm/mach-aspeed/Kconfig b/arch/arm/mach-aspeed/Kconfig
index cd8a15be0724..080019aa6fcd 100644
--- a/arch/arm/mach-aspeed/Kconfig
+++ b/arch/arm/mach-aspeed/Kconfig
@@ -19,9 +19,9 @@ config MACH_ASPEED_G4
 	select PINCTRL_ASPEED_G4
 	select FTTMR010_TIMER
 	help
-	 Say yes if you intend to run on an Aspeed ast2400 or similar
-	 fourth generation BMCs, such as those used by OpenPower Power8
-	 systems.
+	  Say yes if you intend to run on an Aspeed ast2400 or similar
+	  fourth generation BMCs, such as those used by OpenPower Power8
+	  systems.
 
 config MACH_ASPEED_G5
 	bool "Aspeed SoC 5th Generation"
@@ -29,8 +29,8 @@ config MACH_ASPEED_G5
 	select PINCTRL_ASPEED_G5
 	select FTTMR010_TIMER
 	help
-	 Say yes if you intend to run on an Aspeed ast2500 or similar
-	 fifth generation Aspeed BMCs.
+	  Say yes if you intend to run on an Aspeed ast2500 or similar
+	  fifth generation Aspeed BMCs.
 
 config MACH_ASPEED_G6
 	bool "Aspeed SoC 6th Generation"
@@ -40,7 +40,7 @@ config MACH_ASPEED_G6
 	select ARM_GIC
 	select HAVE_ARM_ARCH_TIMER
 	help
-	 Say yes if you intend to run on an Aspeed ast2600 or similar
-	 sixth generation Aspeed BMCs.
+	  Say yes if you intend to run on an Aspeed ast2600 or similar
+	  sixth generation Aspeed BMCs.
 
 endif
-- 
cgit v1.2.3