Merge tag 'arch-removal' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic

Pul removal of obsolete architecture ports from Arnd Bergmann:
 "This removes the entire architecture code for blackfin, cris, frv,
  m32r, metag, mn10300, score, and tile, including the associated device
  drivers.

  I have been working with the (former) maintainers for each one to
  ensure that my interpretation was right and the code is definitely
  unused in mainline kernels. Many had fond memories of working on the
  respective ports to start with and getting them included in upstream,
  but also saw no point in keeping the port alive without any users.

  In the end, it seems that while the eight architectures are extremely
  different, they all suffered the same fate: There was one company in
  charge of an SoC line, a CPU microarchitecture and a software
  ecosystem, which was more costly than licensing newer off-the-shelf
  CPU cores from a third party (typically ARM, MIPS, or RISC-V). It
  seems that all the SoC product lines are still around, but have not
  used the custom CPU architectures for several years at this point. In
  contrast, CPU instruction sets that remain popular and have actively
  maintained kernel ports tend to all be used across multiple licensees.

  [ See the new nds32 port merged in the previous commit for the next
    generation of "one company in charge of an SoC line, a CPU
    microarchitecture and a software ecosystem"   - Linus ]

  The removal came out of a discussion that is now documented at
  https://lwn.net/Articles/748074/. Unlike the original plans, I'm not
  marking any ports as deprecated but remove them all at once after I
  made sure that they are all unused. Some architectures (notably tile,
  mn10300, and blackfin) are still being shipped in products with old
  kernels, but those products will never be updated to newer kernel
  releases.

  After this series, we still have a few architectures without mainline
  gcc support:

   - unicore32 and hexagon both have very outdated gcc releases, but the
     maintainers promised to work on providing something newer. At least
     in case of hexagon, this will only be llvm, not gcc.

   - openrisc, risc-v and nds32 are still in the process of finishing
     their support or getting it added to mainline gcc in the first
     place. They all have patched gcc-7.3 ports that work to some
     degree, but complete upstream support won't happen before gcc-8.1.
     Csky posted their first kernel patch set last week, their situation
     will be similar

  [ Palmer Dabbelt points out that RISC-V support is in mainline gcc
    since gcc-7, although gcc-7.3.0 is the recommended minimum  - Linus ]"

This really says it all:

 2498 files changed, 95 insertions(+), 467668 deletions(-)

* tag 'arch-removal' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic: (74 commits)
  MAINTAINERS: UNICORE32: Change email account
  staging: iio: remove iio-trig-bfin-timer driver
  tty: hvc: remove tile driver
  tty: remove bfin_jtag_comm and hvc_bfin_jtag drivers
  serial: remove tile uart driver
  serial: remove m32r_sio driver
  serial: remove blackfin drivers
  serial: remove cris/etrax uart drivers
  usb: Remove Blackfin references in USB support
  usb: isp1362: remove blackfin arch glue
  usb: musb: remove blackfin port
  usb: host: remove tilegx platform glue
  pwm: remove pwm-bfin driver
  i2c: remove bfin-twi driver
  spi: remove blackfin related host drivers
  watchdog: remove bfin_wdt driver
  can: remove bfin_can driver
  mmc: remove bfin_sdh driver
  input: misc: remove blackfin rotary driver
  input: keyboard: remove bf54x driver
  ...

1 files changed, 0 insertions, 231 deletions

diff --git a/arch/m32r/include/asm/assembler.h b/arch/m32r/include/asm/assembler.h
deleted file mode 100644
index ed90d894f2859..0000000000000
--- a/arch/m32r/include/asm/assembler.h
+++ /dev/null
@@ -1,231 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_M32R_ASSEMBLER_H
-#define _ASM_M32R_ASSEMBLER_H
-
-/*
- * linux/asm-m32r/assembler.h
- *
- * Copyright (C) 2004  Hirokazu Takata <takata at linux-m32r.org>
- *
- * This file contains M32R architecture specific macro definitions.
- */
-
-#include <linux/stringify.h>
-
-#undef __STR
-
-#ifdef __ASSEMBLY__
-#define __STR(x) x
-#else
-#define __STR(x) __stringify(x)
-#endif
-
-#ifdef CONFIG_SMP
-#define M32R_LOCK	__STR(lock)
-#define M32R_UNLOCK	__STR(unlock)
-#else
-#define M32R_LOCK	__STR(ld)
-#define M32R_UNLOCK	__STR(st)
-#endif
-
-#ifdef __ASSEMBLY__
-#undef ENTRY
-#define ENTRY(name) ENTRY_M name
-	.macro  ENTRY_M name
-	.global \name
-	ALIGN
-\name:
-	.endm
-#endif
-
-
-/**
- * LDIMM - load immediate value
- * STI - enable interruption
- * CLI - disable interruption
- */
-
-#ifdef __ASSEMBLY__
-
-#define LDIMM(reg,x) LDIMM reg x
-	.macro LDIMM reg x
-	seth	\reg, #high(\x)
-	or3	\reg, \reg, #low(\x)
-	.endm
-
-#if !(defined(CONFIG_CHIP_M32102) || defined(CONFIG_CHIP_M32104))
-#define ENABLE_INTERRUPTS(reg) ENABLE_INTERRUPTS reg
-	.macro ENABLE_INTERRUPTS reg
-	setpsw  #0x40	    ->	nop
-	; WORKAROUND: "-> nop" is a workaround for the M32700(TS1).
-	.endm
-
-#define DISABLE_INTERRUPTS(reg) DISABLE_INTERRUPTS reg
-	.macro DISABLE_INTERRUPTS reg
-	clrpsw  #0x40	    ->	nop
-	; WORKAROUND: "-> nop" is a workaround for the M32700(TS1).
-	.endm
-#else	/* CONFIG_CHIP_M32102 || CONFIG_CHIP_M32104 */
-#define ENABLE_INTERRUPTS(reg) ENABLE_INTERRUPTS reg
-	.macro ENABLE_INTERRUPTS reg
-	mvfc	\reg, psw
-	or3	\reg, \reg, #0x0040
-	mvtc	\reg, psw
-	.endm
-
-#define DISABLE_INTERRUPTS(reg) DISABLE_INTERRUPTS reg
-	.macro DISABLE_INTERRUPTS reg
-	mvfc	\reg, psw
-	and3	\reg, \reg, #0xffbf
-	mvtc	\reg, psw
-	.endm
-#endif	/* CONFIG_CHIP_M32102 */
-
-	.macro	SAVE_ALL
-	push	r0		; orig_r0
-	push	sp		; spi (r15)
-	push	lr		; r14
-	push	r13
-	mvfc	r13, cr3	; spu
-	push	r13
-	mvfc	r13, bbpc
-	push	r13
-	mvfc	r13, bbpsw
-	push	r13
-	mvfc	r13, bpc
-	push	r13
-	mvfc	r13, psw
-	push	r13
-#if defined(CONFIG_ISA_M32R2) && defined(CONFIG_ISA_DSP_LEVEL2)
-	mvfaclo	r13, a1
-	push	r13
-	mvfachi r13, a1
-	push	r13
-	mvfaclo	r13, a0
-	push	r13
-	mvfachi	r13, a0
-	push	r13
-#elif defined(CONFIG_ISA_M32R2) || defined(CONFIG_ISA_M32R)
-	mvfaclo	r13
-	push	r13
-	mvfachi	r13
-	push	r13
-	ldi	r13, #0
-	push	r13		; dummy push acc1h
-	push	r13		; dummy push acc1l
-#else
-#error unknown isa configuration
-#endif
-	ldi	r13, #-1
-	push	r13		; syscall_nr (default: -1)
-	push	r12
-	push	r11
-	push	r10
-	push	r9
-	push	r8
-	push	r7
-	push	r3
-	push	r2
-	push	r1
-	push	r0
-	addi	sp, #-4		; room for implicit pt_regs parameter
-	push	r6
-	push	r5
-	push	r4
-	.endm
-
-	.macro	RESTORE_ALL
-	pop	r4
-	pop	r5
-	pop	r6
-	addi	sp, #4
-	pop	r0
-	pop	r1
-	pop	r2
-	pop	r3
-	pop	r7
-	pop	r8
-	pop	r9
-	pop	r10
-	pop	r11
-	pop	r12
-	addi	r15, #4		; Skip syscall number
-#if defined(CONFIG_ISA_M32R2) && defined(CONFIG_ISA_DSP_LEVEL2)
-	pop	r13
-	mvtachi	r13, a0
-	pop	r13
-	mvtaclo	r13, a0
-	pop	r13
-	mvtachi	r13, a1
-	pop	r13
-	mvtaclo	r13, a1
-#elif defined(CONFIG_ISA_M32R2) || defined(CONFIG_ISA_M32R)
-	pop	r13		; dummy pop acc1h
-	pop	r13		; dummy pop acc1l
-	pop	r13
-	mvtachi	r13
-	pop	r13
-	mvtaclo	r13
-#else
-#error unknown isa configuration
-#endif
-	pop	r14
-	mvtc	r14, psw
-	pop	r14
-	mvtc	r14, bpc
-	addi	sp, #8		; Skip bbpsw, bbpc
-	pop	r14
-	mvtc	r14, cr3	; spu
-	pop	r13
-	pop	lr		; r14
-	pop	sp		; spi (r15)
-	addi	sp, #4		; Skip orig_r0
-	.fillinsn
-1:	rte
-	.section .fixup,"ax"
-2:	bl	do_exit
-	.previous
-	.section __ex_table,"a"
-	ALIGN
-	.long	1b, 2b
-	.previous
-	.endm
-
-#define GET_CURRENT(reg)  get_current reg
-	.macro get_current reg
-	ldi  \reg, #-8192
-	and  \reg, sp
-	.endm
-
-#if !(defined(CONFIG_CHIP_M32102) || defined(CONFIG_CHIP_M32104))
-	.macro	SWITCH_TO_KERNEL_STACK
-	; switch to kernel stack (spi)
-	clrpsw	#0x80	    ->	nop
-	.endm
-#else	/* CONFIG_CHIP_M32102 || CONFIG_CHIP_M32104 */
-	.macro	SWITCH_TO_KERNEL_STACK
-	push	r0		; save r0 for working
-	mvfc	r0, psw
-	and3	r0, r0, #0x00ff7f
-	mvtc	r0, psw
-	slli	r0, #16
-	bltz	r0, 1f		; check BSM-bit
-;
-	;; called from kernel context: previous stack = spi
-	pop	r0		; retrieve r0
-	bra	2f
-	.fillinsn
-1:
-	;; called from user context: previous stack = spu
-	mvfc	r0, cr3		; spu
-	addi	r0, #4
-	mvtc	r0, cr3		; spu
-	ld	r0, @(-4,r0)	; retrieve r0
-	.fillinsn
-2:
-	.endm
-#endif	/* CONFIG_CHIP_M32102 || CONFIG_CHIP_M32104 */
-
-#endif	/* __ASSEMBLY__ */
-
-#endif	/* _ASM_M32R_ASSEMBLER_H */