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   - unicore32 and hexagon both have very outdated gcc releases, but the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, 143 deletions

diff --git a/arch/m32r/include/asm/flat.h b/arch/m32r/include/asm/flat.h
deleted file mode 100644
index dfcb0e4eb2568..0000000000000
--- a/arch/m32r/include/asm/flat.h
+++ /dev/null
@@ -1,143 +0,0 @@
-/*
- * include/asm-m32r/flat.h
- *
- * uClinux flat-format executables
- *
- * Copyright (C) 2004  Kazuhiro Inaoka
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive for
- * more details.
- */
-#ifndef __ASM_M32R_FLAT_H
-#define __ASM_M32R_FLAT_H
-
-#define	flat_argvp_envp_on_stack()		0
-#define	flat_old_ram_flag(flags)		(flags)
-#define	flat_set_persistent(relval, p)		0
-#define	flat_reloc_valid(reloc, size)		\
-	(((reloc) - textlen_for_m32r_lo16_data) <= (size))
-
-/* Convert a relocation entry into an address.  */
-static inline unsigned long
-flat_get_relocate_addr (unsigned long relval)
-{
-        return relval & 0x00ffffff; /* Mask out top 8-bits */
-}
-
-#define	flat_m32r_get_reloc_type(relval)	((relval) >> 24)
-
-#define M32R_SETH_OPCODE	0xd0c00000 /* SETH instruction code */
-
-#define FLAT_M32R_32		0x00	/* 32bits reloc */
-#define FLAT_M32R_24		0x01	/* unsigned 24bits reloc */
-#define FLAT_M32R_16		0x02	/* 16bits reloc */
-#define FLAT_M32R_LO16		0x03	/* signed low 16bits reloc (low()) */
-#define FLAT_M32R_LO16_DATA	0x04	/* signed low 16bits reloc (low())
-					   for a symbol in .data section */
-					/* High 16bits of an address used
-					   when the lower 16bbits are treated
-					   as unsigned.
-                                           To create SETH instruction only.
-					   0x1X: X means a number of register.
-					   0x10 - 0x3F are reserved. */
-#define FLAT_M32R_HI16_ULO	0x10	/* reloc for SETH Rn,#high(imm16) */
-					/* High 16bits of an address used
-					   when the lower 16bbits are treated
-					   as signed.
-                                           To create SETH instruction only.
-					   0x2X: X means a number of register.
-					   0x20 - 0x4F are reserved. */
-#define FLAT_M32R_HI16_SLO	0x20	/* reloc for SETH Rn,#shigh(imm16) */
-
-static unsigned long textlen_for_m32r_lo16_data = 0;
-
-static inline unsigned long m32r_flat_get_addr_from_rp (u32 *rp,
-                                                        u32 relval,
-						        u32 textlen)
-{
-        unsigned int reloc = flat_m32r_get_reloc_type (relval);
-	textlen_for_m32r_lo16_data = 0;
-	if (reloc & 0xf0) {
-		unsigned long addr = htonl(*rp);
-		switch (reloc & 0xf0)
-		{
-		case FLAT_M32R_HI16_ULO:
-		case FLAT_M32R_HI16_SLO:
-			if (addr == 0) {
-				/* put "seth Rn,#0x0" instead of 0 (addr). */
-				*rp = (M32R_SETH_OPCODE | ((reloc & 0x0f)<<24));
-			}
-			return addr;
-		default:
-			break;
-		}
-	} else {
-		switch (reloc)
-		{
-		case FLAT_M32R_LO16:
-			return htonl(*rp) & 0xFFFF;
-		case FLAT_M32R_LO16_DATA:
-                        /* FIXME: The return value will decrease by textlen
-			   at m32r_flat_put_addr_at_rp () */
-			textlen_for_m32r_lo16_data = textlen;
-			return (htonl(*rp) & 0xFFFF) + textlen;
-		case FLAT_M32R_16:
-			return htons(*(unsigned short *)rp) & 0xFFFF;
-		case FLAT_M32R_24:
-			return htonl(*rp) & 0xFFFFFF;
-		case FLAT_M32R_32:
-			return htonl(*rp);
-		default:
-			break;
-		}
-	}
-	return ~0;      /* bogus value */
-}
-
-static inline int flat_put_addr_at_rp(u32 *rp, u32 addr, u32 relval)
-{
-        unsigned int reloc = flat_m32r_get_reloc_type (relval);
-	if (reloc & 0xf0) {
-		unsigned long Rn = reloc & 0x0f; /* get a number of register */
-		Rn <<= 24; /* 0x0R000000 */
-		reloc &= 0xf0;
-		switch (reloc)
-		{
-		case FLAT_M32R_HI16_ULO: /* To create SETH Rn,#high(imm16) */
-			*rp = (M32R_SETH_OPCODE | Rn
-			       | ((addr >> 16) & 0xFFFF));
-			break;
-		case FLAT_M32R_HI16_SLO: /* To create SETH Rn,#shigh(imm16) */
-			*rp = (M32R_SETH_OPCODE | Rn
-			       | (((addr >> 16) + ((addr & 0x8000) ? 1 : 0))
-				  & 0xFFFF));
-			break;
-		}
-	} else {
-		switch (reloc) {
-		case FLAT_M32R_LO16_DATA:
-			addr -= textlen_for_m32r_lo16_data;
-			textlen_for_m32r_lo16_data = 0;
-		case FLAT_M32R_LO16:
-			*rp = (htonl(*rp) & 0xFFFF0000) | (addr & 0xFFFF);
-			break;
-		case FLAT_M32R_16:
-			*(unsigned short *)rp = addr & 0xFFFF;
-			break;
-		case FLAT_M32R_24:
-			*rp = (htonl(*rp) & 0xFF000000) | (addr & 0xFFFFFF);
-			break;
-		case FLAT_M32R_32:
-			*rp = addr;
-			break;
-		}
-	}
-	return 0;
-}
-
-// kludge - text_len is a local variable in the only user.
-#define flat_get_addr_from_rp(rp, relval, flags, addr, persistent) \
-	(m32r_flat_get_addr_from_rp(rp, relval, text_len), 0)
-
-#endif /* __ASM_M32R_FLAT_H */