arch: remove frv port

The Fujitsu FRV kernel port has been around for a long time, but has not
seen regular updates in several years and instead was marked 'Orphaned'
in 2016 by long-time maintainer David Howells.

The SoC product line apparently is apparently still around in the form
of the Socionext Milbeaut image processor, but this one no longer uses
the FRV CPU cores.

This removes all FRV specific files from the kernel.

Link: http://www.socionext.com/en/products/assp/milbeaut/
Cc: David Howells <dhowells@redhat.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

1 files changed, 0 insertions, 215 deletions

diff --git a/arch/frv/kernel/gdb-io.c b/arch/frv/kernel/gdb-io.c
deleted file mode 100644
index 0707d35079ba..000000000000
--- a/arch/frv/kernel/gdb-io.c
+++ /dev/null
@@ -1,215 +0,0 @@
-/* gdb-io.c: FR403 GDB stub I/O
- *
- * Copyright (C) 2003 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 License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#include <linux/string.h>
-#include <linux/kernel.h>
-#include <linux/signal.h>
-#include <linux/sched.h>
-#include <linux/mm.h>
-#include <linux/console.h>
-#include <linux/init.h>
-#include <linux/serial_reg.h>
-
-#include <asm/pgtable.h>
-#include <asm/irc-regs.h>
-#include <asm/timer-regs.h>
-#include <asm/gdb-stub.h>
-#include "gdb-io.h"
-
-#ifdef CONFIG_GDBSTUB_UART0
-#define __UART(X) (*(volatile uint8_t *)(UART0_BASE + (UART_##X)))
-#define __UART_IRR_NMI 0xff0f0000
-#else /* CONFIG_GDBSTUB_UART1 */
-#define __UART(X) (*(volatile uint8_t *)(UART1_BASE + (UART_##X)))
-#define __UART_IRR_NMI 0xfff00000
-#endif
-
-#define LSR_WAIT_FOR(STATE)			\
-do {						\
-	gdbstub_do_rx();			\
-} while (!(__UART(LSR) & UART_LSR_##STATE))
-
-#define FLOWCTL_QUERY(LINE)	({ __UART(MSR) & UART_MSR_##LINE; })
-#define FLOWCTL_CLEAR(LINE)	do { __UART(MCR) &= ~UART_MCR_##LINE; mb(); } while (0)
-#define FLOWCTL_SET(LINE)	do { __UART(MCR) |= UART_MCR_##LINE;  mb(); } while (0)
-
-#define FLOWCTL_WAIT_FOR(LINE)			\
-do {						\
-	gdbstub_do_rx();			\
-} while(!FLOWCTL_QUERY(LINE))
-
-/*****************************************************************************/
-/*
- * initialise the GDB stub
- * - called with PSR.ET==0, so can't incur external interrupts
- */
-void gdbstub_io_init(void)
-{
-	/* set up the serial port */
-	__UART(LCR) = UART_LCR_WLEN8; /* 1N8 */
-	__UART(FCR) =
-		UART_FCR_ENABLE_FIFO |
-		UART_FCR_CLEAR_RCVR |
-		UART_FCR_CLEAR_XMIT |
-		UART_FCR_TRIGGER_1;
-
-	FLOWCTL_CLEAR(DTR);
-	FLOWCTL_SET(RTS);
-
-//	gdbstub_set_baud(115200);
-
-	/* we want to get serial receive interrupts */
-	__UART(IER) = UART_IER_RDI | UART_IER_RLSI;
-	mb();
-
-	__set_IRR(6, __UART_IRR_NMI);	/* map ERRs and UARTx to NMI */
-
-} /* end gdbstub_io_init() */
-
-/*****************************************************************************/
-/*
- * set up the GDB stub serial port baud rate timers
- */
-void gdbstub_set_baud(unsigned baud)
-{
-	unsigned value, high, low;
-	u8 lcr;
-
-	/* work out the divisor to give us the nearest higher baud rate */
-	value = __serial_clock_speed_HZ / 16 / baud;
-
-	/* determine the baud rate range */
-	high = __serial_clock_speed_HZ / 16 / value;
-	low = __serial_clock_speed_HZ / 16 / (value + 1);
-
-	/* pick the nearest bound */
-	if (low + (high - low) / 2 > baud)
-		value++;
-
-	lcr = __UART(LCR);
-	__UART(LCR) |= UART_LCR_DLAB;
-	mb();
-	__UART(DLL) = value & 0xff;
-	__UART(DLM) = (value >> 8) & 0xff;
-	mb();
-	__UART(LCR) = lcr;
-	mb();
-
-} /* end gdbstub_set_baud() */
-
-/*****************************************************************************/
-/*
- * receive characters into the receive FIFO
- */
-void gdbstub_do_rx(void)
-{
-	unsigned ix, nix;
-
-	ix = gdbstub_rx_inp;
-
-	while (__UART(LSR) & UART_LSR_DR) {
-		nix = (ix + 2) & 0xfff;
-		if (nix == gdbstub_rx_outp)
-			break;
-
-		gdbstub_rx_buffer[ix++] = __UART(LSR);
-		gdbstub_rx_buffer[ix++] = __UART(RX);
-		ix = nix;
-	}
-
-	gdbstub_rx_inp = ix;
-
-	__clr_RC(15);
-	__clr_IRL();
-
-} /* end gdbstub_do_rx() */
-
-/*****************************************************************************/
-/*
- * wait for a character to come from the debugger
- */
-int gdbstub_rx_char(unsigned char *_ch, int nonblock)
-{
-	unsigned ix;
-	u8 ch, st;
-
-	*_ch = 0xff;
-
-	if (gdbstub_rx_unget) {
-		*_ch = gdbstub_rx_unget;
-		gdbstub_rx_unget = 0;
-		return 0;
-	}
-
- try_again:
-	gdbstub_do_rx();
-
-	/* pull chars out of the buffer */
-	ix = gdbstub_rx_outp;
-	if (ix == gdbstub_rx_inp) {
-		if (nonblock)
-			return -EAGAIN;
-		//watchdog_alert_counter = 0;
-		goto try_again;
-	}
-
-	st = gdbstub_rx_buffer[ix++];
-	ch = gdbstub_rx_buffer[ix++];
-	gdbstub_rx_outp = ix & 0x00000fff;
-
-	if (st & UART_LSR_BI) {
-		gdbstub_proto("### GDB Rx Break Detected ###\n");
-		return -EINTR;
-	}
-	else if (st & (UART_LSR_FE|UART_LSR_OE|UART_LSR_PE)) {
-		gdbstub_io("### GDB Rx Error (st=%02x) ###\n",st);
-		return -EIO;
-	}
-	else {
-		gdbstub_io("### GDB Rx %02x (st=%02x) ###\n",ch,st);
-		*_ch = ch & 0x7f;
-		return 0;
-	}
-
-} /* end gdbstub_rx_char() */
-
-/*****************************************************************************/
-/*
- * send a character to the debugger
- */
-void gdbstub_tx_char(unsigned char ch)
-{
-	FLOWCTL_SET(DTR);
-	LSR_WAIT_FOR(THRE);
-//	FLOWCTL_WAIT_FOR(CTS);
-
-	if (ch == 0x0a) {
-		__UART(TX) = 0x0d;
-		mb();
-		LSR_WAIT_FOR(THRE);
-//		FLOWCTL_WAIT_FOR(CTS);
-	}
-	__UART(TX) = ch;
-	mb();
-
-	FLOWCTL_CLEAR(DTR);
-} /* end gdbstub_tx_char() */
-
-/*****************************************************************************/
-/*
- * send a character to the debugger
- */
-void gdbstub_tx_flush(void)
-{
-	LSR_WAIT_FOR(TEMT);
-	LSR_WAIT_FOR(THRE);
-	FLOWCTL_CLEAR(DTR);
-} /* end gdbstub_tx_flush() */