[PATCH 1/5] c6x: remove architecture

Arnd Bergmann arnd at kernel.org
Wed Jan 20 07:48:08 EST 2021 

From: Arnd Bergmann <arnd at arndb.de>

The c6x architecture was added to the kernel in 2011 at a time when
running Linux on DSPs was widely seen as the logical evolution.
It appears the trend has gone back to running Linux on Arm based SoCs
with DSP, using a better supported software ecosystem, and having better
real-time behavior for the DSP code. An example of this is TI's own
Keystone2 platform.

The upstream kernel port appears to no longer have any users. Mark
Salter remained avaialable to review patches, but mentioned that
he no longer has access to working hardware himself. Without any
users, it's best to just remove the code completely to reduce the
work for cross-architecture code changes.

Many thanks to Mark for maintaining the code for the past ten years.

Link: https://lore.kernel.org/lkml/41dc7795afda9f776d8cd0d3075f776cf586e97c.camel@redhat.com/
Cc: Mark Salter <msalter at redhat.com>
Cc: Aurelien Jacquiot <jacquiot.aurelien at gmail.com>
Cc: linux-c6x-dev at linux-c6x.org
Signed-off-by: Arnd Bergmann <arnd at arndb.de>
---
 .../devicetree/bindings/c6x/clocks.txt        |  40 -
 .../devicetree/bindings/c6x/dscr.txt          | 127 ---
 .../devicetree/bindings/c6x/emifa.txt         |  62 --
 Documentation/devicetree/bindings/c6x/soc.txt |  28 -
 .../ti,c64x+megamod-pic.txt                   | 103 ---
 .../bindings/timer/ti,c64x+timer64.txt        |  25 -
 MAINTAINERS                                   |   8 -
 arch/c6x/Kconfig                              | 113 ---
 arch/c6x/Kconfig.debug                        |  10 -
 arch/c6x/Makefile                             |  60 --
 arch/c6x/boot/Makefile                        |  11 -
 arch/c6x/boot/dts/Makefile                    |  16 -
 arch/c6x/boot/dts/dsk6455.dts                 |  57 --
 arch/c6x/boot/dts/evmc6457.dts                |  43 -
 arch/c6x/boot/dts/evmc6472.dts                |  68 --
 arch/c6x/boot/dts/evmc6474.dts                |  53 --
 arch/c6x/boot/dts/evmc6678.dts                |  78 --
 arch/c6x/boot/dts/tms320c6455.dtsi            |  97 ---
 arch/c6x/boot/dts/tms320c6457.dtsi            |  69 --
 arch/c6x/boot/dts/tms320c6472.dtsi            | 135 ----
 arch/c6x/boot/dts/tms320c6474.dtsi            |  90 ---
 arch/c6x/boot/dts/tms320c6678.dtsi            | 147 ----
 arch/c6x/configs/dsk6455_defconfig            |  42 -
 arch/c6x/configs/evmc6457_defconfig           |  39 -
 arch/c6x/configs/evmc6472_defconfig           |  40 -
 arch/c6x/configs/evmc6474_defconfig           |  40 -
 arch/c6x/configs/evmc6678_defconfig           |  40 -
 arch/c6x/include/asm/Kbuild                   |   5 -
 arch/c6x/include/asm/asm-offsets.h            |   1 -
 arch/c6x/include/asm/bitops.h                 |  95 ---
 arch/c6x/include/asm/bug.h                    |  20 -
 arch/c6x/include/asm/cache.h                  |  94 ---
 arch/c6x/include/asm/cacheflush.h             |  45 --
 arch/c6x/include/asm/checksum.h               |  34 -
 arch/c6x/include/asm/clock.h                  | 145 ----
 arch/c6x/include/asm/cmpxchg.h                |  63 --
 arch/c6x/include/asm/delay.h                  |  64 --
 arch/c6x/include/asm/dscr.h                   |  30 -
 arch/c6x/include/asm/elf.h                    | 117 ---
 arch/c6x/include/asm/flat.h                   |  19 -
 arch/c6x/include/asm/ftrace.h                 |   6 -
 arch/c6x/include/asm/hardirq.h                |  17 -
 arch/c6x/include/asm/irq.h                    |  50 --
 arch/c6x/include/asm/irqflags.h               |  68 --
 arch/c6x/include/asm/linkage.h                |  31 -
 arch/c6x/include/asm/megamod-pic.h            |  10 -
 arch/c6x/include/asm/mmu_context.h            |   6 -
 arch/c6x/include/asm/module.h                 |  20 -
 arch/c6x/include/asm/page.h                   |   9 -
 arch/c6x/include/asm/pgtable.h                |  66 --
 arch/c6x/include/asm/processor.h              | 114 ---
 arch/c6x/include/asm/procinfo.h               |  24 -
 arch/c6x/include/asm/ptrace.h                 |  32 -
 arch/c6x/include/asm/sections.h               |  12 -
 arch/c6x/include/asm/setup.h                  |  31 -
 arch/c6x/include/asm/soc.h                    |  35 -
 arch/c6x/include/asm/special_insns.h          |  60 --
 arch/c6x/include/asm/string.h                 |  18 -
 arch/c6x/include/asm/switch_to.h              |  30 -
 arch/c6x/include/asm/syscall.h                |  75 --
 arch/c6x/include/asm/syscalls.h               |  46 --
 arch/c6x/include/asm/thread_info.h            |  94 ---
 arch/c6x/include/asm/timer64.h                |   7 -
 arch/c6x/include/asm/timex.h                  |  30 -
 arch/c6x/include/asm/tlb.h                    |   7 -
 arch/c6x/include/asm/traps.h                  |  33 -
 arch/c6x/include/asm/uaccess.h                |  97 ---
 arch/c6x/include/asm/unaligned.h              | 104 ---
 arch/c6x/include/asm/vmalloc.h                |   4 -
 arch/c6x/include/uapi/asm/Kbuild              |   2 -
 arch/c6x/include/uapi/asm/byteorder.h         |  13 -
 arch/c6x/include/uapi/asm/ptrace.h            | 164 ----
 arch/c6x/include/uapi/asm/setup.h             |   7 -
 arch/c6x/include/uapi/asm/sigcontext.h        |  81 --
 arch/c6x/include/uapi/asm/swab.h              |  55 --
 arch/c6x/include/uapi/asm/unistd.h            |  29 -
 arch/c6x/kernel/Makefile                      |  13 -
 arch/c6x/kernel/asm-offsets.c                 | 123 ---
 arch/c6x/kernel/c6x_ksyms.c                   |  62 --
 arch/c6x/kernel/devicetree.c                  |  14 -
 arch/c6x/kernel/entry.S                       | 736 ------------------
 arch/c6x/kernel/head.S                        |  81 --
 arch/c6x/kernel/irq.c                         | 127 ---
 arch/c6x/kernel/module.c                      | 119 ---
 arch/c6x/kernel/process.c                     | 151 ----
 arch/c6x/kernel/ptrace.c                      | 139 ----
 arch/c6x/kernel/setup.c                       | 476 -----------
 arch/c6x/kernel/signal.c                      | 322 --------
 arch/c6x/kernel/soc.c                         |  87 ---
 arch/c6x/kernel/switch_to.S                   |  71 --
 arch/c6x/kernel/sys_c6x.c                     |  71 --
 arch/c6x/kernel/time.c                        |  63 --
 arch/c6x/kernel/traps.c                       | 409 ----------
 arch/c6x/kernel/vectors.S                     |  78 --
 arch/c6x/kernel/vmlinux.lds.S                 | 151 ----
 arch/c6x/lib/Makefile                         |   8 -
 arch/c6x/lib/checksum.c                       |  11 -
 arch/c6x/lib/csum_64plus.S                    | 414 ----------
 arch/c6x/lib/divi.S                           |  41 -
 arch/c6x/lib/divremi.S                        |  34 -
 arch/c6x/lib/divremu.S                        |  75 --
 arch/c6x/lib/divu.S                           |  86 --
 arch/c6x/lib/llshl.S                          |  25 -
 arch/c6x/lib/llshr.S                          |  26 -
 arch/c6x/lib/llshru.S                         |  26 -
 arch/c6x/lib/memcpy_64plus.S                  |  43 -
 arch/c6x/lib/mpyll.S                          |  37 -
 arch/c6x/lib/negll.S                          |  19 -
 arch/c6x/lib/pop_rts.S                        |  20 -
 arch/c6x/lib/push_rts.S                       |  19 -
 arch/c6x/lib/remi.S                           |  52 --
 arch/c6x/lib/remu.S                           |  70 --
 arch/c6x/lib/strasgi.S                        |  77 --
 arch/c6x/lib/strasgi_64plus.S                 |  27 -
 arch/c6x/mm/Makefile                          |   6 -
 arch/c6x/mm/dma-coherent.c                    | 173 ----
 arch/c6x/mm/init.c                            |  65 --
 arch/c6x/platforms/Kconfig                    |  21 -
 arch/c6x/platforms/Makefile                   |  13 -
 arch/c6x/platforms/cache.c                    | 444 -----------
 arch/c6x/platforms/dscr.c                     | 595 --------------
 arch/c6x/platforms/emif.c                     |  84 --
 arch/c6x/platforms/megamod-pic.c              | 344 --------
 arch/c6x/platforms/pll.c                      | 440 -----------
 arch/c6x/platforms/plldata.c                  | 467 -----------
 arch/c6x/platforms/timer64.c                  | 241 ------
 drivers/bus/Kconfig                           |   2 +-
 fs/Kconfig.binfmt                             |   2 +-
 include/asm-generic/page.h                    |   4 -
 129 files changed, 2 insertions(+), 11162 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/c6x/clocks.txt
 delete mode 100644 Documentation/devicetree/bindings/c6x/dscr.txt
 delete mode 100644 Documentation/devicetree/bindings/c6x/emifa.txt
 delete mode 100644 Documentation/devicetree/bindings/c6x/soc.txt
 delete mode 100644 Documentation/devicetree/bindings/interrupt-controller/ti,c64x+megamod-pic.txt
 delete mode 100644 Documentation/devicetree/bindings/timer/ti,c64x+timer64.txt
 delete mode 100644 arch/c6x/Kconfig
 delete mode 100644 arch/c6x/Kconfig.debug
 delete mode 100644 arch/c6x/Makefile
 delete mode 100644 arch/c6x/boot/Makefile
 delete mode 100644 arch/c6x/boot/dts/Makefile
 delete mode 100644 arch/c6x/boot/dts/dsk6455.dts
 delete mode 100644 arch/c6x/boot/dts/evmc6457.dts
 delete mode 100644 arch/c6x/boot/dts/evmc6472.dts
 delete mode 100644 arch/c6x/boot/dts/evmc6474.dts
 delete mode 100644 arch/c6x/boot/dts/evmc6678.dts
 delete mode 100644 arch/c6x/boot/dts/tms320c6455.dtsi
 delete mode 100644 arch/c6x/boot/dts/tms320c6457.dtsi
 delete mode 100644 arch/c6x/boot/dts/tms320c6472.dtsi
 delete mode 100644 arch/c6x/boot/dts/tms320c6474.dtsi
 delete mode 100644 arch/c6x/boot/dts/tms320c6678.dtsi
 delete mode 100644 arch/c6x/configs/dsk6455_defconfig
 delete mode 100644 arch/c6x/configs/evmc6457_defconfig
 delete mode 100644 arch/c6x/configs/evmc6472_defconfig
 delete mode 100644 arch/c6x/configs/evmc6474_defconfig
 delete mode 100644 arch/c6x/configs/evmc6678_defconfig
 delete mode 100644 arch/c6x/include/asm/Kbuild
 delete mode 100644 arch/c6x/include/asm/asm-offsets.h
 delete mode 100644 arch/c6x/include/asm/bitops.h
 delete mode 100644 arch/c6x/include/asm/bug.h
 delete mode 100644 arch/c6x/include/asm/cache.h
 delete mode 100644 arch/c6x/include/asm/cacheflush.h
 delete mode 100644 arch/c6x/include/asm/checksum.h
 delete mode 100644 arch/c6x/include/asm/clock.h
 delete mode 100644 arch/c6x/include/asm/cmpxchg.h
 delete mode 100644 arch/c6x/include/asm/delay.h
 delete mode 100644 arch/c6x/include/asm/dscr.h
 delete mode 100644 arch/c6x/include/asm/elf.h
 delete mode 100644 arch/c6x/include/asm/flat.h
 delete mode 100644 arch/c6x/include/asm/ftrace.h
 delete mode 100644 arch/c6x/include/asm/hardirq.h
 delete mode 100644 arch/c6x/include/asm/irq.h
 delete mode 100644 arch/c6x/include/asm/irqflags.h
 delete mode 100644 arch/c6x/include/asm/linkage.h
 delete mode 100644 arch/c6x/include/asm/megamod-pic.h
 delete mode 100644 arch/c6x/include/asm/mmu_context.h
 delete mode 100644 arch/c6x/include/asm/module.h
 delete mode 100644 arch/c6x/include/asm/page.h
 delete mode 100644 arch/c6x/include/asm/pgtable.h
 delete mode 100644 arch/c6x/include/asm/processor.h
 delete mode 100644 arch/c6x/include/asm/procinfo.h
 delete mode 100644 arch/c6x/include/asm/ptrace.h
 delete mode 100644 arch/c6x/include/asm/sections.h
 delete mode 100644 arch/c6x/include/asm/setup.h
 delete mode 100644 arch/c6x/include/asm/soc.h
 delete mode 100644 arch/c6x/include/asm/special_insns.h
 delete mode 100644 arch/c6x/include/asm/string.h
 delete mode 100644 arch/c6x/include/asm/switch_to.h
 delete mode 100644 arch/c6x/include/asm/syscall.h
 delete mode 100644 arch/c6x/include/asm/syscalls.h
 delete mode 100644 arch/c6x/include/asm/thread_info.h
 delete mode 100644 arch/c6x/include/asm/timer64.h
 delete mode 100644 arch/c6x/include/asm/timex.h
 delete mode 100644 arch/c6x/include/asm/tlb.h
 delete mode 100644 arch/c6x/include/asm/traps.h
 delete mode 100644 arch/c6x/include/asm/uaccess.h
 delete mode 100644 arch/c6x/include/asm/unaligned.h
 delete mode 100644 arch/c6x/include/asm/vmalloc.h
 delete mode 100644 arch/c6x/include/uapi/asm/Kbuild
 delete mode 100644 arch/c6x/include/uapi/asm/byteorder.h
 delete mode 100644 arch/c6x/include/uapi/asm/ptrace.h
 delete mode 100644 arch/c6x/include/uapi/asm/setup.h
 delete mode 100644 arch/c6x/include/uapi/asm/sigcontext.h
 delete mode 100644 arch/c6x/include/uapi/asm/swab.h
 delete mode 100644 arch/c6x/include/uapi/asm/unistd.h
 delete mode 100644 arch/c6x/kernel/Makefile
 delete mode 100644 arch/c6x/kernel/asm-offsets.c
 delete mode 100644 arch/c6x/kernel/c6x_ksyms.c
 delete mode 100644 arch/c6x/kernel/devicetree.c
 delete mode 100644 arch/c6x/kernel/entry.S
 delete mode 100644 arch/c6x/kernel/head.S
 delete mode 100644 arch/c6x/kernel/irq.c
 delete mode 100644 arch/c6x/kernel/module.c
 delete mode 100644 arch/c6x/kernel/process.c
 delete mode 100644 arch/c6x/kernel/ptrace.c
 delete mode 100644 arch/c6x/kernel/setup.c
 delete mode 100644 arch/c6x/kernel/signal.c
 delete mode 100644 arch/c6x/kernel/soc.c
 delete mode 100644 arch/c6x/kernel/switch_to.S
 delete mode 100644 arch/c6x/kernel/sys_c6x.c
 delete mode 100644 arch/c6x/kernel/time.c
 delete mode 100644 arch/c6x/kernel/traps.c
 delete mode 100644 arch/c6x/kernel/vectors.S
 delete mode 100644 arch/c6x/kernel/vmlinux.lds.S
 delete mode 100644 arch/c6x/lib/Makefile
 delete mode 100644 arch/c6x/lib/checksum.c
 delete mode 100644 arch/c6x/lib/csum_64plus.S
 delete mode 100644 arch/c6x/lib/divi.S
 delete mode 100644 arch/c6x/lib/divremi.S
 delete mode 100644 arch/c6x/lib/divremu.S
 delete mode 100644 arch/c6x/lib/divu.S
 delete mode 100644 arch/c6x/lib/llshl.S
 delete mode 100644 arch/c6x/lib/llshr.S
 delete mode 100644 arch/c6x/lib/llshru.S
 delete mode 100644 arch/c6x/lib/memcpy_64plus.S
 delete mode 100644 arch/c6x/lib/mpyll.S
 delete mode 100644 arch/c6x/lib/negll.S
 delete mode 100644 arch/c6x/lib/pop_rts.S
 delete mode 100644 arch/c6x/lib/push_rts.S
 delete mode 100644 arch/c6x/lib/remi.S
 delete mode 100644 arch/c6x/lib/remu.S
 delete mode 100644 arch/c6x/lib/strasgi.S
 delete mode 100644 arch/c6x/lib/strasgi_64plus.S
 delete mode 100644 arch/c6x/mm/Makefile
 delete mode 100644 arch/c6x/mm/dma-coherent.c
 delete mode 100644 arch/c6x/mm/init.c
 delete mode 100644 arch/c6x/platforms/Kconfig
 delete mode 100644 arch/c6x/platforms/Makefile
 delete mode 100644 arch/c6x/platforms/cache.c
 delete mode 100644 arch/c6x/platforms/dscr.c
 delete mode 100644 arch/c6x/platforms/emif.c
 delete mode 100644 arch/c6x/platforms/megamod-pic.c
 delete mode 100644 arch/c6x/platforms/pll.c
 delete mode 100644 arch/c6x/platforms/plldata.c
 delete mode 100644 arch/c6x/platforms/timer64.c

diff --git a/Documentation/devicetree/bindings/c6x/clocks.txt b/Documentation/devicetree/bindings/c6x/clocks.txt
deleted file mode 100644
index a04f5fd30122..000000000000
diff --git a/Documentation/devicetree/bindings/c6x/dscr.txt b/Documentation/devicetree/bindings/c6x/dscr.txt
deleted file mode 100644
index 92672235de57..000000000000
diff --git a/Documentation/devicetree/bindings/c6x/emifa.txt b/Documentation/devicetree/bindings/c6x/emifa.txt
deleted file mode 100644
index 0ff6e9b9a13f..000000000000
diff --git a/Documentation/devicetree/bindings/c6x/soc.txt b/Documentation/devicetree/bindings/c6x/soc.txt
deleted file mode 100644
index b1e4973b5769..000000000000
diff --git a/Documentation/devicetree/bindings/interrupt-controller/ti,c64x+megamod-pic.txt b/Documentation/devicetree/bindings/interrupt-controller/ti,c64x+megamod-pic.txt
deleted file mode 100644
index ee3f9c351501..000000000000
diff --git a/Documentation/devicetree/bindings/timer/ti,c64x+timer64.txt b/Documentation/devicetree/bindings/timer/ti,c64x+timer64.txt
deleted file mode 100644
index d96c1e283e73..000000000000
diff --git a/MAINTAINERS b/MAINTAINERS
index fb971f5f6f0c..7c3eadb185f9 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -3837,14 +3837,6 @@ F:	drivers/irqchip/irq-csky-*
 N:	csky
 K:	csky
 
-C6X ARCHITECTURE
-M:	Mark Salter <msalter at redhat.com>
-M:	Aurelien Jacquiot <jacquiot.aurelien at gmail.com>
-L:	linux-c6x-dev at linux-c6x.org
-S:	Maintained
-W:	http://www.linux-c6x.org/wiki/index.php/Main_Page
-F:	arch/c6x/
-
 CA8210 IEEE-802.15.4 RADIO DRIVER
 M:	Harry Morris <h.morris at cascoda.com>
 L:	linux-wpan at vger.kernel.org
diff --git a/arch/c6x/Kconfig b/arch/c6x/Kconfig
deleted file mode 100644
index bdeeac28b1be..000000000000
diff --git a/arch/c6x/Kconfig.debug b/arch/c6x/Kconfig.debug
deleted file mode 100644
index c299e0d8eca3..000000000000
diff --git a/arch/c6x/Makefile b/arch/c6x/Makefile
deleted file mode 100644
index b7aa854f7008..000000000000
diff --git a/arch/c6x/boot/Makefile b/arch/c6x/boot/Makefile
deleted file mode 100644
index 842b7b0bfe80..000000000000
diff --git a/arch/c6x/boot/dts/Makefile b/arch/c6x/boot/dts/Makefile
deleted file mode 100644
index f438285c3640..000000000000
diff --git a/arch/c6x/boot/dts/dsk6455.dts b/arch/c6x/boot/dts/dsk6455.dts
deleted file mode 100644
index fa904f2916b5..000000000000
diff --git a/arch/c6x/boot/dts/evmc6457.dts b/arch/c6x/boot/dts/evmc6457.dts
deleted file mode 100644
index 73e1d43b51ce..000000000000
diff --git a/arch/c6x/boot/dts/evmc6472.dts b/arch/c6x/boot/dts/evmc6472.dts
deleted file mode 100644
index 4878b78919fa..000000000000
diff --git a/arch/c6x/boot/dts/evmc6474.dts b/arch/c6x/boot/dts/evmc6474.dts
deleted file mode 100644
index d10746453217..000000000000
diff --git a/arch/c6x/boot/dts/evmc6678.dts b/arch/c6x/boot/dts/evmc6678.dts
deleted file mode 100644
index 5e6c0961e7b2..000000000000
diff --git a/arch/c6x/boot/dts/tms320c6455.dtsi b/arch/c6x/boot/dts/tms320c6455.dtsi
deleted file mode 100644
index 0b21cb30343b..000000000000
diff --git a/arch/c6x/boot/dts/tms320c6457.dtsi b/arch/c6x/boot/dts/tms320c6457.dtsi
deleted file mode 100644
index e49f7ae19124..000000000000
diff --git a/arch/c6x/boot/dts/tms320c6472.dtsi b/arch/c6x/boot/dts/tms320c6472.dtsi
deleted file mode 100644
index 9dd4b04e78ef..000000000000
diff --git a/arch/c6x/boot/dts/tms320c6474.dtsi b/arch/c6x/boot/dts/tms320c6474.dtsi
deleted file mode 100644
index 0ef5333629a6..000000000000
diff --git a/arch/c6x/boot/dts/tms320c6678.dtsi b/arch/c6x/boot/dts/tms320c6678.dtsi
deleted file mode 100644
index da1e3f2bf062..000000000000
diff --git a/arch/c6x/configs/dsk6455_defconfig b/arch/c6x/configs/dsk6455_defconfig
deleted file mode 100644
index d764ea4cce7f..000000000000
diff --git a/arch/c6x/configs/evmc6457_defconfig b/arch/c6x/configs/evmc6457_defconfig
deleted file mode 100644
index 05d0b4a25ab1..000000000000
diff --git a/arch/c6x/configs/evmc6472_defconfig b/arch/c6x/configs/evmc6472_defconfig
deleted file mode 100644
index 8d81fcf86b0e..000000000000
diff --git a/arch/c6x/configs/evmc6474_defconfig b/arch/c6x/configs/evmc6474_defconfig
deleted file mode 100644
index 8156a98f3958..000000000000
diff --git a/arch/c6x/configs/evmc6678_defconfig b/arch/c6x/configs/evmc6678_defconfig
deleted file mode 100644
index c4f433c25b69..000000000000
diff --git a/arch/c6x/include/asm/Kbuild b/arch/c6x/include/asm/Kbuild
deleted file mode 100644
index a4ef93a1f7ae..000000000000
diff --git a/arch/c6x/include/asm/asm-offsets.h b/arch/c6x/include/asm/asm-offsets.h
deleted file mode 100644
index d370ee36a182..000000000000
diff --git a/arch/c6x/include/asm/bitops.h b/arch/c6x/include/asm/bitops.h
deleted file mode 100644
index 50e618f38a11..000000000000
diff --git a/arch/c6x/include/asm/bug.h b/arch/c6x/include/asm/bug.h
deleted file mode 100644
index 1a68676256ee..000000000000
diff --git a/arch/c6x/include/asm/cache.h b/arch/c6x/include/asm/cache.h
deleted file mode 100644
index 0fa8bf77c954..000000000000
diff --git a/arch/c6x/include/asm/cacheflush.h b/arch/c6x/include/asm/cacheflush.h
deleted file mode 100644
index 10922d528de6..000000000000
diff --git a/arch/c6x/include/asm/checksum.h b/arch/c6x/include/asm/checksum.h
deleted file mode 100644
index 934918def632..000000000000
diff --git a/arch/c6x/include/asm/clock.h b/arch/c6x/include/asm/clock.h
deleted file mode 100644
index 7b6c42a52ec9..000000000000
diff --git a/arch/c6x/include/asm/cmpxchg.h b/arch/c6x/include/asm/cmpxchg.h
deleted file mode 100644
index 6eed628a9e7f..000000000000
diff --git a/arch/c6x/include/asm/delay.h b/arch/c6x/include/asm/delay.h
deleted file mode 100644
index 455fc713ae54..000000000000
diff --git a/arch/c6x/include/asm/dscr.h b/arch/c6x/include/asm/dscr.h
deleted file mode 100644
index f6b095c3d3f5..000000000000
diff --git a/arch/c6x/include/asm/elf.h b/arch/c6x/include/asm/elf.h
deleted file mode 100644
index ca88acbf560b..000000000000
diff --git a/arch/c6x/include/asm/flat.h b/arch/c6x/include/asm/flat.h
deleted file mode 100644
index 9e6544b51386..000000000000
diff --git a/arch/c6x/include/asm/ftrace.h b/arch/c6x/include/asm/ftrace.h
deleted file mode 100644
index 3701958d3d1c..000000000000
diff --git a/arch/c6x/include/asm/hardirq.h b/arch/c6x/include/asm/hardirq.h
deleted file mode 100644
index f37d07d31040..000000000000
diff --git a/arch/c6x/include/asm/irq.h b/arch/c6x/include/asm/irq.h
deleted file mode 100644
index 9da4d1afd0d7..000000000000
diff --git a/arch/c6x/include/asm/irqflags.h b/arch/c6x/include/asm/irqflags.h
deleted file mode 100644
index d6cd71c02629..000000000000
diff --git a/arch/c6x/include/asm/linkage.h b/arch/c6x/include/asm/linkage.h
deleted file mode 100644
index 1ad615da6479..000000000000
diff --git a/arch/c6x/include/asm/megamod-pic.h b/arch/c6x/include/asm/megamod-pic.h
deleted file mode 100644
index a0a6d596bf9b..000000000000
diff --git a/arch/c6x/include/asm/mmu_context.h b/arch/c6x/include/asm/mmu_context.h
deleted file mode 100644
index d2659d0a3297..000000000000
diff --git a/arch/c6x/include/asm/module.h b/arch/c6x/include/asm/module.h
deleted file mode 100644
index 9fc9f4a8ecc2..000000000000
diff --git a/arch/c6x/include/asm/page.h b/arch/c6x/include/asm/page.h
deleted file mode 100644
index 40079899084d..000000000000
diff --git a/arch/c6x/include/asm/pgtable.h b/arch/c6x/include/asm/pgtable.h
deleted file mode 100644
index 8a91ceda39fa..000000000000
diff --git a/arch/c6x/include/asm/processor.h b/arch/c6x/include/asm/processor.h
deleted file mode 100644
index 1456f5e11de3..000000000000
diff --git a/arch/c6x/include/asm/procinfo.h b/arch/c6x/include/asm/procinfo.h
deleted file mode 100644
index aaa3cb902c43..000000000000
diff --git a/arch/c6x/include/asm/ptrace.h b/arch/c6x/include/asm/ptrace.h
deleted file mode 100644
index 7cbae382cf37..000000000000
diff --git a/arch/c6x/include/asm/sections.h b/arch/c6x/include/asm/sections.h
deleted file mode 100644
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diff --git a/arch/c6x/include/asm/setup.h b/arch/c6x/include/asm/setup.h
deleted file mode 100644
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diff --git a/arch/c6x/include/asm/soc.h b/arch/c6x/include/asm/soc.h
deleted file mode 100644
index 43f50159e59b..000000000000
diff --git a/arch/c6x/include/asm/special_insns.h b/arch/c6x/include/asm/special_insns.h
deleted file mode 100644
index d233160aefd4..000000000000
diff --git a/arch/c6x/include/asm/string.h b/arch/c6x/include/asm/string.h
deleted file mode 100644
index b290ead40f68..000000000000
diff --git a/arch/c6x/include/asm/switch_to.h b/arch/c6x/include/asm/switch_to.h
deleted file mode 100644
index 36c5332fadae..000000000000
diff --git a/arch/c6x/include/asm/syscall.h b/arch/c6x/include/asm/syscall.h
deleted file mode 100644
index 38f3e2284ecd..000000000000
diff --git a/arch/c6x/include/asm/syscalls.h b/arch/c6x/include/asm/syscalls.h
deleted file mode 100644
index df3d05feb153..000000000000
diff --git a/arch/c6x/include/asm/thread_info.h b/arch/c6x/include/asm/thread_info.h
deleted file mode 100644
index dd8913d57189..000000000000
diff --git a/arch/c6x/include/asm/timer64.h b/arch/c6x/include/asm/timer64.h
deleted file mode 100644
index b850dfef1f79..000000000000
diff --git a/arch/c6x/include/asm/timex.h b/arch/c6x/include/asm/timex.h
deleted file mode 100644
index f946ce297e13..000000000000
diff --git a/arch/c6x/include/asm/tlb.h b/arch/c6x/include/asm/tlb.h
deleted file mode 100644
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diff --git a/arch/c6x/include/asm/traps.h b/arch/c6x/include/asm/traps.h
deleted file mode 100644
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diff --git a/arch/c6x/include/asm/uaccess.h b/arch/c6x/include/asm/uaccess.h
deleted file mode 100644
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diff --git a/arch/c6x/include/asm/unaligned.h b/arch/c6x/include/asm/unaligned.h
deleted file mode 100644
index d628cc170564..000000000000
diff --git a/arch/c6x/include/asm/vmalloc.h b/arch/c6x/include/asm/vmalloc.h
deleted file mode 100644
index 26c6c6696bbd..000000000000
diff --git a/arch/c6x/include/uapi/asm/Kbuild b/arch/c6x/include/uapi/asm/Kbuild
deleted file mode 100644
index e78470141932..000000000000
diff --git a/arch/c6x/include/uapi/asm/byteorder.h b/arch/c6x/include/uapi/asm/byteorder.h
deleted file mode 100644
index ab61f867391c..000000000000
diff --git a/arch/c6x/include/uapi/asm/ptrace.h b/arch/c6x/include/uapi/asm/ptrace.h
deleted file mode 100644
index 9b51110a0842..000000000000
diff --git a/arch/c6x/include/uapi/asm/setup.h b/arch/c6x/include/uapi/asm/setup.h
deleted file mode 100644
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diff --git a/arch/c6x/include/uapi/asm/sigcontext.h b/arch/c6x/include/uapi/asm/sigcontext.h
deleted file mode 100644
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diff --git a/arch/c6x/include/uapi/asm/swab.h b/arch/c6x/include/uapi/asm/swab.h
deleted file mode 100644
index c407c0497718..000000000000
diff --git a/arch/c6x/include/uapi/asm/unistd.h b/arch/c6x/include/uapi/asm/unistd.h
deleted file mode 100644
index 79b724c39d9b..000000000000
diff --git a/arch/c6x/kernel/Makefile b/arch/c6x/kernel/Makefile
deleted file mode 100644
index fbe74174de87..000000000000
diff --git a/arch/c6x/kernel/asm-offsets.c b/arch/c6x/kernel/asm-offsets.c
deleted file mode 100644
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diff --git a/arch/c6x/kernel/c6x_ksyms.c b/arch/c6x/kernel/c6x_ksyms.c
deleted file mode 100644
index 5a39f52f9db4..000000000000
diff --git a/arch/c6x/kernel/devicetree.c b/arch/c6x/kernel/devicetree.c
deleted file mode 100644
index a0c73f0545b2..000000000000
diff --git a/arch/c6x/kernel/entry.S b/arch/c6x/kernel/entry.S
deleted file mode 100644
index fb154d19625b..000000000000
diff --git a/arch/c6x/kernel/head.S b/arch/c6x/kernel/head.S
deleted file mode 100644
index fecbeef827bc..000000000000
diff --git a/arch/c6x/kernel/irq.c b/arch/c6x/kernel/irq.c
deleted file mode 100644
index e4c53d185b62..000000000000
diff --git a/arch/c6x/kernel/module.c b/arch/c6x/kernel/module.c
deleted file mode 100644
index 09b4c6bfe877..000000000000
diff --git a/arch/c6x/kernel/process.c b/arch/c6x/kernel/process.c
deleted file mode 100644
index 9f4fd6a40a10..000000000000
diff --git a/arch/c6x/kernel/ptrace.c b/arch/c6x/kernel/ptrace.c
deleted file mode 100644
index 3cdaa8cf0ed6..000000000000
diff --git a/arch/c6x/kernel/setup.c b/arch/c6x/kernel/setup.c
deleted file mode 100644
index 9254c3b794a5..000000000000
diff --git a/arch/c6x/kernel/signal.c b/arch/c6x/kernel/signal.c
deleted file mode 100644
index 862460c3b183..000000000000
diff --git a/arch/c6x/kernel/soc.c b/arch/c6x/kernel/soc.c
deleted file mode 100644
index 8362f9390e03..000000000000
diff --git a/arch/c6x/kernel/switch_to.S b/arch/c6x/kernel/switch_to.S
deleted file mode 100644
index b7f9f607042e..000000000000
diff --git a/arch/c6x/kernel/sys_c6x.c b/arch/c6x/kernel/sys_c6x.c
deleted file mode 100644
index 600277f057cf..000000000000
diff --git a/arch/c6x/kernel/time.c b/arch/c6x/kernel/time.c
deleted file mode 100644
index f3ec91a87f4f..000000000000
diff --git a/arch/c6x/kernel/traps.c b/arch/c6x/kernel/traps.c
deleted file mode 100644
index 2b9121c755be..000000000000
diff --git a/arch/c6x/kernel/vectors.S b/arch/c6x/kernel/vectors.S
deleted file mode 100644
index ad3dc006a6d3..000000000000
diff --git a/arch/c6x/kernel/vmlinux.lds.S b/arch/c6x/kernel/vmlinux.lds.S
deleted file mode 100644
index ac99ba0864bf..000000000000
diff --git a/arch/c6x/lib/Makefile b/arch/c6x/lib/Makefile
deleted file mode 100644
index e182004f82fe..000000000000
diff --git a/arch/c6x/lib/checksum.c b/arch/c6x/lib/checksum.c
deleted file mode 100644
index dff2e2ec6e64..000000000000
diff --git a/arch/c6x/lib/csum_64plus.S b/arch/c6x/lib/csum_64plus.S
deleted file mode 100644
index 57148866d8d3..000000000000
diff --git a/arch/c6x/lib/divi.S b/arch/c6x/lib/divi.S
deleted file mode 100644
index d1764ae0b519..000000000000
diff --git a/arch/c6x/lib/divremi.S b/arch/c6x/lib/divremi.S
deleted file mode 100644
index 575fc57a8a76..000000000000
diff --git a/arch/c6x/lib/divremu.S b/arch/c6x/lib/divremu.S
deleted file mode 100644
index 5f6a6a2997ae..000000000000
diff --git a/arch/c6x/lib/divu.S b/arch/c6x/lib/divu.S
deleted file mode 100644
index f0f6082944c2..000000000000
diff --git a/arch/c6x/lib/llshl.S b/arch/c6x/lib/llshl.S
deleted file mode 100644
index 3272499618e0..000000000000
diff --git a/arch/c6x/lib/llshr.S b/arch/c6x/lib/llshr.S
deleted file mode 100644
index 6bfaacd15e73..000000000000
diff --git a/arch/c6x/lib/llshru.S b/arch/c6x/lib/llshru.S
deleted file mode 100644
index 103128f50770..000000000000
diff --git a/arch/c6x/lib/memcpy_64plus.S b/arch/c6x/lib/memcpy_64plus.S
deleted file mode 100644
index 157a30486bfd..000000000000
diff --git a/arch/c6x/lib/mpyll.S b/arch/c6x/lib/mpyll.S
deleted file mode 100644
index d07c13ec4fd4..000000000000
diff --git a/arch/c6x/lib/negll.S b/arch/c6x/lib/negll.S
deleted file mode 100644
index 9ba434db5366..000000000000
diff --git a/arch/c6x/lib/pop_rts.S b/arch/c6x/lib/pop_rts.S
deleted file mode 100644
index f129e32943c5..000000000000
diff --git a/arch/c6x/lib/push_rts.S b/arch/c6x/lib/push_rts.S
deleted file mode 100644
index 40b0a4fe937c..000000000000
diff --git a/arch/c6x/lib/remi.S b/arch/c6x/lib/remi.S
deleted file mode 100644
index 96a1335eac20..000000000000
diff --git a/arch/c6x/lib/remu.S b/arch/c6x/lib/remu.S
deleted file mode 100644
index 428feb9c06c0..000000000000
diff --git a/arch/c6x/lib/strasgi.S b/arch/c6x/lib/strasgi.S
deleted file mode 100644
index 715aeb200792..000000000000
diff --git a/arch/c6x/lib/strasgi_64plus.S b/arch/c6x/lib/strasgi_64plus.S
deleted file mode 100644
index d10aa2dc3249..000000000000
diff --git a/arch/c6x/mm/Makefile b/arch/c6x/mm/Makefile
deleted file mode 100644
index 19d05e972dd1..000000000000
diff --git a/arch/c6x/mm/dma-coherent.c b/arch/c6x/mm/dma-coherent.c
deleted file mode 100644
index 03df07a831fc..000000000000
diff --git a/arch/c6x/mm/init.c b/arch/c6x/mm/init.c
deleted file mode 100644
index a97e51a3e26d..000000000000
diff --git a/arch/c6x/platforms/Kconfig b/arch/c6x/platforms/Kconfig
deleted file mode 100644
index f3a9ae6e0e82..000000000000
diff --git a/arch/c6x/platforms/Makefile b/arch/c6x/platforms/Makefile
deleted file mode 100644
index b320f1c68884..000000000000
diff --git a/arch/c6x/platforms/cache.c b/arch/c6x/platforms/cache.c
deleted file mode 100644
index fff027b72513..000000000000
diff --git a/arch/c6x/platforms/dscr.c b/arch/c6x/platforms/dscr.c
deleted file mode 100644
index 4571615b589f..000000000000
diff --git a/arch/c6x/platforms/emif.c b/arch/c6x/platforms/emif.c
deleted file mode 100644
index 6142ecc2cd88..000000000000
diff --git a/arch/c6x/platforms/megamod-pic.c b/arch/c6x/platforms/megamod-pic.c
deleted file mode 100644
index 56189e50728c..000000000000
diff --git a/arch/c6x/platforms/pll.c b/arch/c6x/platforms/pll.c
deleted file mode 100644
index 6fdf20d64dc7..000000000000
diff --git a/arch/c6x/platforms/plldata.c b/arch/c6x/platforms/plldata.c
deleted file mode 100644
index a799e04edefe..000000000000
diff --git a/arch/c6x/platforms/timer64.c b/arch/c6x/platforms/timer64.c
deleted file mode 100644
index 661f4c7c6ef6..000000000000
diff --git a/drivers/bus/Kconfig b/drivers/bus/Kconfig
index 0c262c2aeaf2..e7f7eee6ee9a 100644
--- a/drivers/bus/Kconfig
+++ b/drivers/bus/Kconfig
@@ -80,7 +80,7 @@ config MOXTET
 
 config HISILICON_LPC
 	bool "Support for ISA I/O space on HiSilicon Hip06/7"
-	depends on (ARM64 && ARCH_HISI) || (COMPILE_TEST && !ALPHA && !HEXAGON && !PARISC && !C6X)
+	depends on (ARM64 && ARCH_HISI) || (COMPILE_TEST && !ALPHA && !HEXAGON && !PARISC)
 	depends on HAS_IOMEM
 	select INDIRECT_PIO if ARM64
 	help
diff --git a/fs/Kconfig.binfmt b/fs/Kconfig.binfmt
index 885da6d983b4..647439c2c05a 100644
--- a/fs/Kconfig.binfmt
+++ b/fs/Kconfig.binfmt
@@ -45,7 +45,7 @@ config ARCH_USE_GNU_PROPERTY
 config BINFMT_ELF_FDPIC
 	bool "Kernel support for FDPIC ELF binaries"
 	default y if !BINFMT_ELF
-	depends on (ARM || (SUPERH && !MMU) || C6X)
+	depends on (ARM || (SUPERH && !MMU))
 	select ELFCORE
 	help
 	  ELF FDPIC binaries are based on ELF, but allow the individual load
diff --git a/include/asm-generic/page.h b/include/asm-generic/page.h
index fe801f01625e..6fc47561814c 100644
--- a/include/asm-generic/page.h
+++ b/include/asm-generic/page.h
@@ -63,11 +63,7 @@ extern unsigned long memory_end;
 
 #endif /* !__ASSEMBLY__ */
 
-#ifdef CONFIG_KERNEL_RAM_BASE_ADDRESS
-#define PAGE_OFFSET		(CONFIG_KERNEL_RAM_BASE_ADDRESS)
-#else
 #define PAGE_OFFSET		(0)
-#endif
 
 #ifndef ARCH_PFN_OFFSET
 #define ARCH_PFN_OFFSET		(PAGE_OFFSET >> PAGE_SHIFT)
-- 
2.29.2

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