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   - unicore32 and hexagon both have very outdated gcc releases, but the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, 560 deletions

diff --git a/arch/cris/arch-v10/kernel/debugport.c b/arch/cris/arch-v10/kernel/debugport.c
deleted file mode 100644
index d30834d4dd7e..000000000000
--- a/arch/cris/arch-v10/kernel/debugport.c
+++ /dev/null
@@ -1,560 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/* Serialport functions for debugging
- *
- * Copyright (c) 2000-2007 Axis Communications AB
- *
- * Authors:  Bjorn Wesen
- *
- * Exports:
- *    console_print_etrax(char *buf)
- *    int getDebugChar()
- *    putDebugChar(int)
- *    enableDebugIRQ()
- *    init_etrax_debug()
- *
- */
-
-#include <linux/console.h>
-#include <linux/init.h>
-#include <linux/major.h>
-#include <linux/delay.h>
-#include <linux/tty.h>
-#include <arch/svinto.h>
-
-extern void reset_watchdog(void);
-
-struct dbg_port
-{
-  unsigned int index;
-  const volatile unsigned* read;
-  volatile char* write;
-  volatile unsigned* xoff;
-  volatile char* baud;
-  volatile char* tr_ctrl;
-  volatile char* rec_ctrl;
-  unsigned long irq;
-  unsigned int started;
-  unsigned long baudrate;
-  unsigned char parity;
-  unsigned int bits;
-};
-
-struct dbg_port ports[]=
-{
-  {
-    0,
-    R_SERIAL0_READ,
-    R_SERIAL0_TR_DATA,
-    R_SERIAL0_XOFF,
-    R_SERIAL0_BAUD,
-    R_SERIAL0_TR_CTRL,
-    R_SERIAL0_REC_CTRL,
-    IO_STATE(R_IRQ_MASK1_SET, ser0_data, set),
-    0,
-    115200,
-    'N',
-    8
-  },
-  {
-    1,
-    R_SERIAL1_READ,
-    R_SERIAL1_TR_DATA,
-    R_SERIAL1_XOFF,
-    R_SERIAL1_BAUD,
-    R_SERIAL1_TR_CTRL,
-    R_SERIAL1_REC_CTRL,
-    IO_STATE(R_IRQ_MASK1_SET, ser1_data, set),
-    0,
-    115200,
-    'N',
-    8
-  },
-  {
-    2,
-    R_SERIAL2_READ,
-    R_SERIAL2_TR_DATA,
-    R_SERIAL2_XOFF,
-    R_SERIAL2_BAUD,
-    R_SERIAL2_TR_CTRL,
-    R_SERIAL2_REC_CTRL,
-    IO_STATE(R_IRQ_MASK1_SET, ser2_data, set),
-    0,
-    115200,
-    'N',
-    8
-  },
-  {
-    3,
-    R_SERIAL3_READ,
-    R_SERIAL3_TR_DATA,
-    R_SERIAL3_XOFF,
-    R_SERIAL3_BAUD,
-    R_SERIAL3_TR_CTRL,
-    R_SERIAL3_REC_CTRL,
-    IO_STATE(R_IRQ_MASK1_SET, ser3_data, set),
-    0,
-    115200,
-    'N',
-    8
-  }
-};
-
-#ifdef CONFIG_ETRAX_SERIAL
-extern struct tty_driver *serial_driver;
-#endif
-
-struct dbg_port* port =
-#if defined(CONFIG_ETRAX_DEBUG_PORT0)
-  &ports[0];
-#elif defined(CONFIG_ETRAX_DEBUG_PORT1)
-  &ports[1];
-#elif defined(CONFIG_ETRAX_DEBUG_PORT2)
-  &ports[2];
-#elif defined(CONFIG_ETRAX_DEBUG_PORT3)
-  &ports[3];
-#else
-  NULL;
-#endif
-
-static struct dbg_port* kgdb_port =
-#if defined(CONFIG_ETRAX_KGDB_PORT0)
-  &ports[0];
-#elif defined(CONFIG_ETRAX_KGDB_PORT1)
-  &ports[1];
-#elif defined(CONFIG_ETRAX_KGDB_PORT2)
-  &ports[2];
-#elif defined(CONFIG_ETRAX_KGDB_PORT3)
-  &ports[3];
-#else
-  NULL;
-#endif
-
-static void
-start_port(struct dbg_port* p)
-{
-	unsigned long rec_ctrl = 0;
-	unsigned long tr_ctrl = 0;
-
-	if (!p)
-		return;
-
-	if (p->started)
-		return;
-	p->started = 1;
-
-	if (p->index == 0)
-	{
-		genconfig_shadow &= ~IO_MASK(R_GEN_CONFIG, dma6);
-		genconfig_shadow |= IO_STATE(R_GEN_CONFIG, dma6, unused);
-	}
-	else if (p->index == 1)
-	{
-		genconfig_shadow &= ~IO_MASK(R_GEN_CONFIG, dma8);
-		genconfig_shadow |= IO_STATE(R_GEN_CONFIG, dma8, usb);
-	}
-	else if (p->index == 2)
-	{
-		genconfig_shadow &= ~IO_MASK(R_GEN_CONFIG, dma2);
-		genconfig_shadow |= IO_STATE(R_GEN_CONFIG, dma2, par0);
-		genconfig_shadow &= ~IO_MASK(R_GEN_CONFIG, dma3);
-		genconfig_shadow |= IO_STATE(R_GEN_CONFIG, dma3, par0);
-		genconfig_shadow |= IO_STATE(R_GEN_CONFIG, ser2, select);
-	}
-	else
-	{
-		genconfig_shadow &= ~IO_MASK(R_GEN_CONFIG, dma4);
-		genconfig_shadow |= IO_STATE(R_GEN_CONFIG, dma4, par1);
-		genconfig_shadow &= ~IO_MASK(R_GEN_CONFIG, dma5);
-		genconfig_shadow |= IO_STATE(R_GEN_CONFIG, dma5, par1);
-		genconfig_shadow |= IO_STATE(R_GEN_CONFIG, ser3, select);
-	}
-
-	*R_GEN_CONFIG = genconfig_shadow;
-
-	*p->xoff =
-		IO_STATE(R_SERIAL0_XOFF, tx_stop, enable) |
-		IO_STATE(R_SERIAL0_XOFF, auto_xoff, disable) |
-		IO_FIELD(R_SERIAL0_XOFF, xoff_char, 0);
-
-	switch (p->baudrate)
-	{
-	case 0:
-	case 115200:
-		*p->baud =
-		  IO_STATE(R_SERIAL0_BAUD, tr_baud, c115k2Hz) |
-		  IO_STATE(R_SERIAL0_BAUD, rec_baud, c115k2Hz);
-		break;
-	case 1200:
-		*p->baud =
-		  IO_STATE(R_SERIAL0_BAUD, tr_baud, c1200Hz) |
-		  IO_STATE(R_SERIAL0_BAUD, rec_baud, c1200Hz);
-		break;
-	case 2400:
-		*p->baud =
-		  IO_STATE(R_SERIAL0_BAUD, tr_baud, c2400Hz) |
-		  IO_STATE(R_SERIAL0_BAUD, rec_baud, c2400Hz);
-		break;
-	case 4800:
-		*p->baud =
-		  IO_STATE(R_SERIAL0_BAUD, tr_baud, c4800Hz) |
-		  IO_STATE(R_SERIAL0_BAUD, rec_baud, c4800Hz);
-		break;
-	case 9600:
-		*p->baud =
-		  IO_STATE(R_SERIAL0_BAUD, tr_baud, c9600Hz) |
-		  IO_STATE(R_SERIAL0_BAUD, rec_baud, c9600Hz);
-		  break;
-	case 19200:
-		*p->baud =
-		  IO_STATE(R_SERIAL0_BAUD, tr_baud, c19k2Hz) |
-		  IO_STATE(R_SERIAL0_BAUD, rec_baud, c19k2Hz);
-		 break;
-	case 38400:
-		*p->baud =
-		  IO_STATE(R_SERIAL0_BAUD, tr_baud, c38k4Hz) |
-		  IO_STATE(R_SERIAL0_BAUD, rec_baud, c38k4Hz);
-		break;
-	case 57600:
-		*p->baud =
-		  IO_STATE(R_SERIAL0_BAUD, tr_baud, c57k6Hz) |
-		  IO_STATE(R_SERIAL0_BAUD, rec_baud, c57k6Hz);
-		break;
-	default:
-		*p->baud =
-		  IO_STATE(R_SERIAL0_BAUD, tr_baud, c115k2Hz) |
-		  IO_STATE(R_SERIAL0_BAUD, rec_baud, c115k2Hz);
-		  break;
-        }
-
-	if (p->parity == 'E') {
-		rec_ctrl =
-		  IO_STATE(R_SERIAL0_REC_CTRL, rec_par, even) |
-		  IO_STATE(R_SERIAL0_REC_CTRL, rec_par_en, enable);
-		tr_ctrl =
-		  IO_STATE(R_SERIAL0_TR_CTRL, tr_par, even) |
-		  IO_STATE(R_SERIAL0_TR_CTRL, tr_par_en, enable);
-	} else if (p->parity == 'O') {
-		rec_ctrl =
-		  IO_STATE(R_SERIAL0_REC_CTRL, rec_par, odd) |
-		  IO_STATE(R_SERIAL0_REC_CTRL, rec_par_en, enable);
-		tr_ctrl =
-		  IO_STATE(R_SERIAL0_TR_CTRL, tr_par, odd) |
-		  IO_STATE(R_SERIAL0_TR_CTRL, tr_par_en, enable);
-	} else {
-		rec_ctrl =
-		  IO_STATE(R_SERIAL0_REC_CTRL, rec_par, even) |
-		  IO_STATE(R_SERIAL0_REC_CTRL, rec_par_en, disable);
-		tr_ctrl =
-		  IO_STATE(R_SERIAL0_TR_CTRL, tr_par, even) |
-		  IO_STATE(R_SERIAL0_TR_CTRL, tr_par_en, disable);
-	}
-	if (p->bits == 7)
-	{
-		rec_ctrl |= IO_STATE(R_SERIAL0_REC_CTRL, rec_bitnr, rec_7bit);
-		tr_ctrl |= IO_STATE(R_SERIAL0_TR_CTRL, tr_bitnr, tr_7bit);
-	}
-	else
-	{
-		rec_ctrl |= IO_STATE(R_SERIAL0_REC_CTRL, rec_bitnr, rec_8bit);
-		tr_ctrl |= IO_STATE(R_SERIAL0_TR_CTRL, tr_bitnr, tr_8bit);
-	}
-
-	*p->rec_ctrl =
-		IO_STATE(R_SERIAL0_REC_CTRL, dma_err, stop) |
-		IO_STATE(R_SERIAL0_REC_CTRL, rec_enable, enable) |
-		IO_STATE(R_SERIAL0_REC_CTRL, rts_, active) |
-		IO_STATE(R_SERIAL0_REC_CTRL, sampling, middle) |
-		IO_STATE(R_SERIAL0_REC_CTRL, rec_stick_par, normal) |
-		rec_ctrl;
-
-	*p->tr_ctrl =
-		IO_FIELD(R_SERIAL0_TR_CTRL, txd, 0) |
-		IO_STATE(R_SERIAL0_TR_CTRL, tr_enable, enable) |
-		IO_STATE(R_SERIAL0_TR_CTRL, auto_cts, disabled) |
-		IO_STATE(R_SERIAL0_TR_CTRL, stop_bits, one_bit) |
-		IO_STATE(R_SERIAL0_TR_CTRL, tr_stick_par, normal) |
-		tr_ctrl;
-}
-
-static void
-console_write_direct(struct console *co, const char *buf, unsigned int len)
-{
-	int i;
-	unsigned long flags;
-
-        if (!port)
-		return;
-
-	local_irq_save(flags);
-
-	/* Send data */
-	for (i = 0; i < len; i++) {
-		/* LF -> CRLF */
-		if (buf[i] == '\n') {
-			while (!(*port->read & IO_MASK(R_SERIAL0_READ, tr_ready)))
-			;
-			*port->write = '\r';
-		}
-		/* Wait until transmitter is ready and send.*/
-		while (!(*port->read & IO_MASK(R_SERIAL0_READ, tr_ready)))
-			;
-		*port->write = buf[i];
-	}
-
-	/*
-	 * Feed the watchdog, otherwise it will reset the chip during boot.
-	 * The time to send an ordinary boot message line (10-90 chars)
-	 * varies between 1-8ms at 115200. What makes up for the additional
-	 * 90ms that allows the watchdog to bite?
-	*/
-	reset_watchdog();
-
-	local_irq_restore(flags);
-}
-
-static void
-console_write(struct console *co, const char *buf, unsigned int len)
-{
-	if (!port)
-		return;
-
-        console_write_direct(co, buf, len);
-}
-
-/* legacy function */
-
-void
-console_print_etrax(const char *buf)
-{
-	console_write(NULL, buf, strlen(buf));
-}
-
-/* Use polling to get a single character FROM the debug port */
-
-int
-getDebugChar(void)
-{
-	unsigned long readval;
-
-	if (!kgdb_port)
-		return 0;
-
-	do {
-		readval = *kgdb_port->read;
-	} while (!(readval & IO_MASK(R_SERIAL0_READ, data_avail)));
-
-	return (readval & IO_MASK(R_SERIAL0_READ, data_in));
-}
-
-/* Use polling to put a single character to the debug port */
-
-void
-putDebugChar(int val)
-{
-	if (!kgdb_port)
-		return;
-
-	while (!(*kgdb_port->read & IO_MASK(R_SERIAL0_READ, tr_ready)))
-		;
-	*kgdb_port->write = val;
-}
-
-/* Enable irq for receiving chars on the debug port, used by kgdb */
-
-void
-enableDebugIRQ(void)
-{
-	if (!kgdb_port)
-		return;
-
-	*R_IRQ_MASK1_SET = kgdb_port->irq;
-	/* use R_VECT_MASK directly, since we really bypass Linux normal
-	 * IRQ handling in kgdb anyway, we don't need to use enable_irq
-	 */
-	*R_VECT_MASK_SET = IO_STATE(R_VECT_MASK_SET, serial, set);
-
-	*kgdb_port->rec_ctrl = IO_STATE(R_SERIAL0_REC_CTRL, rec_enable, enable);
-}
-
-static int __init
-console_setup(struct console *co, char *options)
-{
-	char* s;
-
-	if (options) {
-		port = &ports[co->index];
-		port->baudrate = 115200;
-                port->parity = 'N';
-                port->bits = 8;
-		port->baudrate = simple_strtoul(options, NULL, 10);
-		s = options;
-		while(*s >= '0' && *s <= '9')
-			s++;
-		if (*s) port->parity = *s++;
-		if (*s) port->bits   = *s++ - '0';
-		port->started = 0;
-		start_port(0);
-	}
-	return 0;
-}
-
-
-/* This is a dummy serial device that throws away anything written to it.
- * This is used when no debug output is wanted.
- */
-static struct tty_driver dummy_driver;
-
-static int dummy_open(struct tty_struct *tty, struct file * filp)
-{
-	return 0;
-}
-
-static void dummy_close(struct tty_struct *tty, struct file * filp)
-{
-}
-
-static int dummy_write(struct tty_struct * tty,
-                       const unsigned char *buf, int count)
-{
-	return count;
-}
-
-static int dummy_write_room(struct tty_struct *tty)
-{
-	return 8192;
-}
-
-static const struct tty_operations dummy_ops = {
-	.open = dummy_open,
-	.close = dummy_close,
-	.write = dummy_write,
-	.write_room = dummy_write_room,
-};
-
-void __init
-init_dummy_console(void)
-{
-	memset(&dummy_driver, 0, sizeof(struct tty_driver));
-	dummy_driver.driver_name = "serial";
-	dummy_driver.name = "ttyS";
-	dummy_driver.major = TTY_MAJOR;
-	dummy_driver.minor_start = 68;
-	dummy_driver.num = 1;       /* etrax100 has 4 serial ports */
-	dummy_driver.type = TTY_DRIVER_TYPE_SERIAL;
-	dummy_driver.subtype = SERIAL_TYPE_NORMAL;
-	dummy_driver.init_termios = tty_std_termios;
-	/* Normally B9600 default... */
-	dummy_driver.init_termios.c_cflag =
-		B115200 | CS8 | CREAD | HUPCL | CLOCAL;
-	dummy_driver.flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
-	dummy_driver.init_termios.c_ispeed = 115200;
-	dummy_driver.init_termios.c_ospeed = 115200;
-
-	dummy_driver.ops = &dummy_ops;
-	if (tty_register_driver(&dummy_driver))
-		panic("Couldn't register dummy serial driver\n");
-}
-
-static struct tty_driver*
-etrax_console_device(struct console* co, int *index)
-{
-	if (port)
-		*index = port->index;
-	else
-		*index = 0;
-#ifdef CONFIG_ETRAX_SERIAL
-        return port ? serial_driver : &dummy_driver;
-#else
-	return &dummy_driver;
-#endif
-}
-
-static struct console ser_console = {
-	name : "ttyS",
-	write: console_write,
-	read : NULL,
-	device : etrax_console_device,
-	unblank : NULL,
-	setup : console_setup,
-	flags : CON_PRINTBUFFER,
-	index : -1,
-	cflag : 0,
-	next : NULL
-};
-static struct console ser0_console = {
-	name : "ttyS",
-	write: console_write,
-	read : NULL,
-	device : etrax_console_device,
-	unblank : NULL,
-	setup : console_setup,
-	flags : CON_PRINTBUFFER,
-	index : 0,
-	cflag : 0,
-	next : NULL
-};
-
-static struct console ser1_console = {
-	name : "ttyS",
-	write: console_write,
-	read : NULL,
-	device : etrax_console_device,
-	unblank : NULL,
-	setup : console_setup,
-	flags : CON_PRINTBUFFER,
-	index : 1,
-	cflag : 0,
-	next : NULL
-};
-static struct console ser2_console = {
-	name : "ttyS",
-	write: console_write,
-	read : NULL,
-	device : etrax_console_device,
-	unblank : NULL,
-	setup : console_setup,
-	flags : CON_PRINTBUFFER,
-	index : 2,
-	cflag : 0,
-	next : NULL
-};
-static struct console ser3_console = {
-	name : "ttyS",
-	write: console_write,
-	read : NULL,
-	device : etrax_console_device,
-	unblank : NULL,
-	setup : console_setup,
-	flags : CON_PRINTBUFFER,
-	index : 3,
-	cflag : 0,
-	next : NULL
-};
-/*
- *      Register console (for printk's etc)
- */
-
-int __init
-init_etrax_debug(void)
-{
-	static int first = 1;
-
-	if (!first) {
-		unregister_console(&ser_console);
-		register_console(&ser0_console);
-		register_console(&ser1_console);
-		register_console(&ser2_console);
-		register_console(&ser3_console);
-                init_dummy_console();
-		return 0;
-	}
-
-	first = 0;
-	register_console(&ser_console);
-	start_port(port);
-#ifdef CONFIG_ETRAX_KGDB
-	start_port(kgdb_port);
-#endif
-	return 0;
-}
-__initcall(init_etrax_debug);