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   - unicore32 and hexagon both have very outdated gcc releases, but the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

4 files changed, 0 insertions, 346 deletions

diff --git a/arch/mn10300/unit-asb2305/include/unit/clock.h b/arch/mn10300/unit-asb2305/include/unit/clock.h
deleted file mode 100644
index 29e3425431cf..000000000000
--- a/arch/mn10300/unit-asb2305/include/unit/clock.h
+++ /dev/null
@@ -1,24 +0,0 @@
-/* ASB2305-specific clocks
- *
- * 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_UNIT_CLOCK_H
-#define _ASM_UNIT_CLOCK_H
-
-#ifndef __ASSEMBLY__
-
-#define MN10300_IOCLK		33333333UL
-/* #define MN10300_IOBCLK	66666666UL */
-
-#endif /* !__ASSEMBLY__ */
-
-#define MN10300_WDCLK		MN10300_IOCLK
-
-#endif /* _ASM_UNIT_CLOCK_H */
diff --git a/arch/mn10300/unit-asb2305/include/unit/leds.h b/arch/mn10300/unit-asb2305/include/unit/leds.h
deleted file mode 100644
index bc471f617fd1..000000000000
--- a/arch/mn10300/unit-asb2305/include/unit/leds.h
+++ /dev/null
@@ -1,51 +0,0 @@
-/* ASB2305-specific LEDs
- *
- * 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_UNIT_LEDS_H
-#define _ASM_UNIT_LEDS_H
-
-#include <asm/pio-regs.h>
-#include <asm/cpu-regs.h>
-#include <asm/exceptions.h>
-
-#define ASB2305_7SEGLEDS	__SYSREG(0xA6F90000, u32)
-
-/* perform a hard reset by driving PIO06 low */
-#define mn10300_unit_hard_reset()		\
-do {						\
-	P0OUT &= 0xbf;				\
-	P0MD = (P0MD & P0MD_6) | P0MD_6_OUT;	\
-} while (0)
-
-/*
- * use the 7-segment LEDs to indicate states
- */
-/* indicate double-fault by displaying "db-f" on the LEDs */
-#define mn10300_set_dbfleds			\
-	mov	0x43077f1d,d0		;	\
-	mov	d0,(ASB2305_7SEGLEDS)
-
-/* flip the 7-segment LEDs between "Gdb-" and "----" */
-#define mn10300_set_gdbleds(ONOFF)				\
-do {								\
-	ASB2305_7SEGLEDS = (ONOFF) ? 0x8543077f : 0x7f7f7f7f;	\
-} while (0)
-
-#ifndef __ASSEMBLY__
-extern void peripheral_leds_display_exception(enum exception_code);
-extern void peripheral_leds_led_chase(void);
-extern void peripheral_leds7x4_display_dec(unsigned int, unsigned int);
-extern void peripheral_leds7x4_display_hex(unsigned int, unsigned int);
-extern void peripheral_leds7x4_display_minssecs(unsigned int, unsigned int);
-extern void peripheral_leds7x4_display_rtc(void);
-#endif /* __ASSEMBLY__ */
-
-#endif /* _ASM_UNIT_LEDS_H */
diff --git a/arch/mn10300/unit-asb2305/include/unit/serial.h b/arch/mn10300/unit-asb2305/include/unit/serial.h
deleted file mode 100644
index 88c08219315f..000000000000
--- a/arch/mn10300/unit-asb2305/include/unit/serial.h
+++ /dev/null
@@ -1,125 +0,0 @@
-/* ASB2305-specific 8250 serial ports
- *
- * 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_UNIT_SERIAL_H
-#define _ASM_UNIT_SERIAL_H
-
-#include <asm/cpu-regs.h>
-#include <proc/irq.h>
-#include <linux/serial_reg.h>
-
-#define SERIAL_PORT0_BASE_ADDRESS	0xA6FB0000
-#define ASB2305_DEBUG_MCR	__SYSREG(0xA6FB0000 + UART_MCR * 2, u8)
-
-#define SERIAL_IRQ	XIRQ0	/* Dual serial (PC16552)	(Hi) */
-
-/*
- * The ASB2305 has an 18.432 MHz clock the UART
- */
-#define BASE_BAUD	(18432000 / 16)
-
-/*
- * dispose of the /dev/ttyS0 serial port
- */
-#ifndef CONFIG_GDBSTUB_ON_TTYSx
-
-#define SERIAL_PORT_DFNS						\
-	{								\
-	.baud_base		= BASE_BAUD,				\
-	.irq			= SERIAL_IRQ,				\
-	.flags			= STD_COM_FLAGS,			\
-	.iomem_base		= (u8 *) SERIAL_PORT0_BASE_ADDRESS,	\
-	.iomem_reg_shift	= 2,					\
-	.io_type		= SERIAL_IO_MEM,			\
-	},
-
-#ifndef __ASSEMBLY__
-
-static inline void __debug_to_serial(const char *p, int n)
-{
-}
-
-#endif /* !__ASSEMBLY__ */
-
-#else /* CONFIG_GDBSTUB_ON_TTYSx */
-
-#define SERIAL_PORT_DFNS /* stolen by gdb-stub */
-
-#if defined(CONFIG_GDBSTUB_ON_TTYS0)
-#define GDBPORT_SERIAL_RX	__SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_RX  * 4, u8)
-#define GDBPORT_SERIAL_TX	__SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_TX  * 4, u8)
-#define GDBPORT_SERIAL_DLL	__SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_DLL * 4, u8)
-#define GDBPORT_SERIAL_DLM	__SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_DLM * 4, u8)
-#define GDBPORT_SERIAL_IER	__SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_IER * 4, u8)
-#define GDBPORT_SERIAL_IIR	__SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_IIR * 4, u8)
-#define GDBPORT_SERIAL_FCR	__SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_FCR * 4, u8)
-#define GDBPORT_SERIAL_LCR	__SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_LCR * 4, u8)
-#define GDBPORT_SERIAL_MCR	__SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_MCR * 4, u8)
-#define GDBPORT_SERIAL_LSR	__SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_LSR * 4, u8)
-#define GDBPORT_SERIAL_MSR	__SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_MSR * 4, u8)
-#define GDBPORT_SERIAL_SCR	__SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_SCR * 4, u8)
-#define GDBPORT_SERIAL_IRQ	SERIAL_IRQ
-
-#elif defined(CONFIG_GDBSTUB_ON_TTYS1)
-#error The ASB2305 doesnt have a /dev/ttyS1
-#endif
-
-#ifndef __ASSEMBLY__
-
-#define TTYS0_TX	__SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_TX  * 4, u8)
-#define TTYS0_MCR	__SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_MCR * 4, u8)
-#define TTYS0_LSR	__SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_LSR * 4, u8)
-#define TTYS0_MSR	__SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_MSR * 4, u8)
-
-#define LSR_WAIT_FOR(STATE)				\
-do {							\
-	while (!(TTYS0_LSR & UART_LSR_##STATE)) {}	\
-} while (0)
-#define FLOWCTL_WAIT_FOR(LINE)				\
-do {							\
-	while (!(TTYS0_MSR & UART_MSR_##LINE)) {}	\
-} while (0)
-#define FLOWCTL_CLEAR(LINE)			\
-do {						\
-	TTYS0_MCR &= ~UART_MCR_##LINE;		\
-} while (0)
-#define FLOWCTL_SET(LINE)			\
-do {						\
-	TTYS0_MCR |= UART_MCR_##LINE;		\
-} while (0)
-#define FLOWCTL_QUERY(LINE)	({ TTYS0_MSR & UART_MSR_##LINE; })
-
-static inline void __debug_to_serial(const char *p, int n)
-{
-	char ch;
-
-	FLOWCTL_SET(DTR);
-
-	for (; n > 0; n--) {
-		LSR_WAIT_FOR(THRE);
-		FLOWCTL_WAIT_FOR(CTS);
-
-		ch = *p++;
-		if (ch == 0x0a) {
-			TTYS0_TX = 0x0d;
-			LSR_WAIT_FOR(THRE);
-			FLOWCTL_WAIT_FOR(CTS);
-		}
-		TTYS0_TX = ch;
-	}
-
-	FLOWCTL_CLEAR(DTR);
-}
-
-#endif /* !__ASSEMBLY__ */
-
-#endif /* CONFIG_GDBSTUB_ON_TTYSx */
-
-#endif /* _ASM_UNIT_SERIAL_H */
diff --git a/arch/mn10300/unit-asb2305/include/unit/timex.h b/arch/mn10300/unit-asb2305/include/unit/timex.h
deleted file mode 100644
index 4cefc224f448..000000000000
--- a/arch/mn10300/unit-asb2305/include/unit/timex.h
+++ /dev/null
@@ -1,146 +0,0 @@
-/* ASB2305-specific timer specifications
- *
- * Copyright (C) 2007, 2010 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_UNIT_TIMEX_H
-#define _ASM_UNIT_TIMEX_H
-
-#include <asm/timer-regs.h>
-#include <unit/clock.h>
-#include <asm/param.h>
-
-/*
- * jiffies counter specifications
- */
-
-#define	TMJCBR_MAX		0xffff
-#define	TMJCIRQ			TM1IRQ
-#define	TMJCICR			TM1ICR
-
-#ifndef __ASSEMBLY__
-
-#define MN10300_SRC_IOCLK	MN10300_IOCLK
-
-#ifndef HZ
-# error HZ undeclared.
-#endif /* !HZ */
-/* use as little prescaling as possible to avoid losing accuracy */
-#if (MN10300_SRC_IOCLK + HZ / 2) / HZ - 1 <= TMJCBR_MAX
-# define IOCLK_PRESCALE		1
-# define JC_TIMER_CLKSRC	TM0MD_SRC_IOCLK
-# define TSC_TIMER_CLKSRC	TM4MD_SRC_IOCLK
-#elif (MN10300_SRC_IOCLK / 8 + HZ / 2) / HZ - 1 <= TMJCBR_MAX
-# define IOCLK_PRESCALE		8
-# define JC_TIMER_CLKSRC	TM0MD_SRC_IOCLK_8
-# define TSC_TIMER_CLKSRC	TM4MD_SRC_IOCLK_8
-#elif (MN10300_SRC_IOCLK / 32 + HZ / 2) / HZ - 1 <= TMJCBR_MAX
-# define IOCLK_PRESCALE		32
-# define JC_TIMER_CLKSRC	TM0MD_SRC_IOCLK_32
-# define TSC_TIMER_CLKSRC	TM4MD_SRC_IOCLK_32
-#else
-# error You lose.
-#endif
-
-#define MN10300_JCCLK		(MN10300_SRC_IOCLK / IOCLK_PRESCALE)
-#define MN10300_TSCCLK		(MN10300_SRC_IOCLK / IOCLK_PRESCALE)
-
-#define MN10300_JC_PER_HZ	((MN10300_JCCLK + HZ / 2) / HZ)
-#define MN10300_TSC_PER_HZ	((MN10300_TSCCLK + HZ / 2) / HZ)
-
-static inline void stop_jiffies_counter(void)
-{
-	u16 tmp;
-	TM01MD = JC_TIMER_CLKSRC | TM1MD_SRC_TM0CASCADE << 8;
-	tmp = TM01MD;
-}
-
-static inline void reload_jiffies_counter(u32 cnt)
-{
-	u32 tmp;
-
-	TM01BR = cnt;
-	tmp = TM01BR;
-
-	TM01MD = JC_TIMER_CLKSRC |		\
-		 TM1MD_SRC_TM0CASCADE << 8 |	\
-		 TM0MD_INIT_COUNTER |		\
-		 TM1MD_INIT_COUNTER << 8;
-
-
-	TM01MD = JC_TIMER_CLKSRC |		\
-		 TM1MD_SRC_TM0CASCADE << 8 |	\
-		 TM0MD_COUNT_ENABLE |		\
-		 TM1MD_COUNT_ENABLE << 8;
-
-	tmp = TM01MD;
-}
-
-#endif /* !__ASSEMBLY__ */
-
-
-/*
- * timestamp counter specifications
- */
-
-#define	TMTSCBR_MAX		0xffffffff
-#define	TMTSCBC			TM45BC
-
-#ifndef __ASSEMBLY__
-
-static inline void startup_timestamp_counter(void)
-{
-	u32 t32;
-
-	/* set up timer 4 & 5 cascaded as a 32-bit counter to count real time
-	 * - count down from 4Gig-1 to 0 and wrap at IOCLK rate
-	 */
-	TM45BR = TMTSCBR_MAX;
-	t32 = TM45BR;
-
-	TM4MD = TSC_TIMER_CLKSRC;
-	TM4MD |= TM4MD_INIT_COUNTER;
-	TM4MD &= ~TM4MD_INIT_COUNTER;
-	TM4ICR = 0;
-	t32 = TM4ICR;
-
-	TM5MD = TM5MD_SRC_TM4CASCADE;
-	TM5MD |= TM5MD_INIT_COUNTER;
-	TM5MD &= ~TM5MD_INIT_COUNTER;
-	TM5ICR = 0;
-	t32 = TM5ICR;
-
-	TM5MD |= TM5MD_COUNT_ENABLE;
-	TM4MD |= TM4MD_COUNT_ENABLE;
-	t32 = TM5MD;
-	t32 = TM4MD;
-}
-
-static inline void shutdown_timestamp_counter(void)
-{
-	u8 t8;
-	TM4MD = 0;
-	TM5MD = 0;
-	t8 = TM4MD;
-	t8 = TM5MD;
-}
-
-/*
- * we use a cascaded pair of 16-bit down-counting timers to count I/O
- * clock cycles for the purposes of time keeping
- */
-typedef unsigned long cycles_t;
-
-static inline cycles_t read_timestamp_counter(void)
-{
-	return (cycles_t)~TMTSCBC;
-}
-
-#endif /* !__ASSEMBLY__ */
-
-#endif /* _ASM_UNIT_TIMEX_H */