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   - unicore32 and hexagon both have very outdated gcc releases, but the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, 130 deletions

diff --git a/arch/mn10300/include/asm/page.h b/arch/mn10300/include/asm/page.h
deleted file mode 100644
index dfe730a5ede0..000000000000
--- a/arch/mn10300/include/asm/page.h
+++ /dev/null
@@ -1,130 +0,0 @@
-/* MN10300 Page table definitions
- *
- * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public Licence
- * as published by the Free Software Foundation; either version
- * 2 of the Licence, or (at your option) any later version.
- */
-#ifndef _ASM_PAGE_H
-#define _ASM_PAGE_H
-
-/* PAGE_SHIFT determines the page size */
-#define PAGE_SHIFT	12
-
-#ifndef __ASSEMBLY__
-#define PAGE_SIZE	(1UL << PAGE_SHIFT)
-#define PAGE_MASK	(~(PAGE_SIZE - 1))
-#else
-#define PAGE_SIZE	+(1 << PAGE_SHIFT)	/* unary plus marks an
-						 * immediate val not an addr */
-#define PAGE_MASK	+(~(PAGE_SIZE - 1))
-#endif
-
-#ifdef __KERNEL__
-#ifndef __ASSEMBLY__
-
-#define clear_page(page)	memset((void *)(page), 0, PAGE_SIZE)
-#define copy_page(to, from)	memcpy((void *)(to), (void *)(from), PAGE_SIZE)
-
-#define clear_user_page(addr, vaddr, page)	clear_page(addr)
-#define copy_user_page(vto, vfrom, vaddr, to)	copy_page(vto, vfrom)
-
-/*
- * These are used to make use of C type-checking..
- */
-typedef struct { unsigned long pte; } pte_t;
-typedef struct { unsigned long pgd; } pgd_t;
-typedef struct { unsigned long pgprot; } pgprot_t;
-typedef struct page *pgtable_t;
-
-#define PTE_MASK	PAGE_MASK
-#define HPAGE_SHIFT	22
-
-#ifdef CONFIG_HUGETLB_PAGE
-#define HPAGE_SIZE		((1UL) << HPAGE_SHIFT)
-#define HPAGE_MASK		(~(HPAGE_SIZE - 1))
-#define HUGETLB_PAGE_ORDER	(HPAGE_SHIFT - PAGE_SHIFT)
-#endif
-
-#define pte_val(x)	((x).pte)
-#define pgd_val(x)	((x).pgd)
-#define pgprot_val(x)	((x).pgprot)
-
-#define __pte(x)	((pte_t) { (x) })
-#define __pgd(x)	((pgd_t) { (x) })
-#define __pgprot(x)	((pgprot_t) { (x) })
-
-#define __ARCH_USE_5LEVEL_HACK
-#include <asm-generic/pgtable-nopmd.h>
-
-#endif /* !__ASSEMBLY__ */
-
-/*
- * This handles the memory map.. We could make this a config
- * option, but too many people screw it up, and too few need
- * it.
- *
- * A __PAGE_OFFSET of 0xC0000000 means that the kernel has
- * a virtual address space of one gigabyte, which limits the
- * amount of physical memory you can use to about 950MB.
- */
-
-#ifndef __ASSEMBLY__
-
-/* Pure 2^n version of get_order */
-static inline int get_order(unsigned long size) __attribute__((const));
-static inline int get_order(unsigned long size)
-{
-	int order;
-
-	size = (size - 1) >> (PAGE_SHIFT - 1);
-	order = -1;
-	do {
-		size >>= 1;
-		order++;
-	} while (size);
-	return order;
-}
-
-#endif /* __ASSEMBLY__ */
-
-#include <asm/page_offset.h>
-
-#define __PAGE_OFFSET		(PAGE_OFFSET_RAW)
-#define PAGE_OFFSET		((unsigned long) __PAGE_OFFSET)
-
-/*
- * main RAM and kernel working space are coincident at 0x90000000, but to make
- * life more interesting, there's also an uncached virtual shadow at 0xb0000000
- * - these mappings are fixed in the MMU
- */
-#define __pfn_disp		(CONFIG_KERNEL_RAM_BASE_ADDRESS >> PAGE_SHIFT)
-
-#define __pa(x)			((unsigned long)(x))
-#define __va(x)			((void *)(unsigned long)(x))
-#define pfn_to_kaddr(pfn)	__va((pfn) << PAGE_SHIFT)
-#define pfn_to_page(pfn)	(mem_map + ((pfn) - __pfn_disp))
-#define page_to_pfn(page)	((unsigned long)((page) - mem_map) + __pfn_disp)
-#define __pfn_to_phys(pfn)	PFN_PHYS(pfn)
-
-#define pfn_valid(pfn)					\
-({							\
-	unsigned long __pfn = (pfn) - __pfn_disp;	\
-	__pfn < max_mapnr;				\
-})
-
-#define virt_to_page(kaddr)	pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
-#define virt_addr_valid(kaddr)	pfn_valid(__pa(kaddr) >> PAGE_SHIFT)
-#define page_to_phys(page)	(page_to_pfn(page) << PAGE_SHIFT)
-
-#define VM_DATA_DEFAULT_FLAGS \
-	(VM_READ | VM_WRITE | \
-	((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0) | \
-		 VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
-
-#endif /* __KERNEL__ */
-
-#endif /* _ASM_PAGE_H */