mn10300: Remove the architecture

Remove the MN10300 arch as the hardware is defunct.

Suggested-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Masahiro Yamada <yamada.masahiro@socionext.com>
cc: linux-am33-list@redhat.com
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

1 files changed, 0 insertions, 174 deletions

diff --git a/arch/mn10300/kernel/gdb-io-serial.c b/arch/mn10300/kernel/gdb-io-serial.c
deleted file mode 100644
index df51242744cc..000000000000
--- a/arch/mn10300/kernel/gdb-io-serial.c
+++ /dev/null
@@ -1,174 +0,0 @@
-/* 16550 serial driver for gdbstub I/O
- *
- * 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.
- */
-#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/nmi.h>
-
-#include <asm/pgtable.h>
-#include <asm/gdb-stub.h>
-#include <asm/exceptions.h>
-#include <asm/serial-regs.h>
-#include <unit/serial.h>
-#include <asm/smp.h>
-
-/*
- * initialise the GDB stub
- */
-void gdbstub_io_init(void)
-{
-	u16 tmp;
-
-	/* set up the serial port */
-	GDBPORT_SERIAL_LCR = UART_LCR_WLEN8; /* 1N8 */
-	GDBPORT_SERIAL_FCR = (UART_FCR_ENABLE_FIFO | UART_FCR_CLEAR_RCVR |
-			      UART_FCR_CLEAR_XMIT);
-
-	FLOWCTL_CLEAR(DTR);
-	FLOWCTL_SET(RTS);
-
-	gdbstub_io_set_baud(115200);
-
-	/* we want to get serial receive interrupts */
-	XIRQxICR(GDBPORT_SERIAL_IRQ) = 0;
-	tmp = XIRQxICR(GDBPORT_SERIAL_IRQ);
-
-#if   CONFIG_GDBSTUB_IRQ_LEVEL == 0
-	IVAR0 = EXCEP_IRQ_LEVEL0;
-#elif CONFIG_GDBSTUB_IRQ_LEVEL == 1
-	IVAR1 = EXCEP_IRQ_LEVEL1;
-#elif CONFIG_GDBSTUB_IRQ_LEVEL == 2
-	IVAR2 = EXCEP_IRQ_LEVEL2;
-#elif CONFIG_GDBSTUB_IRQ_LEVEL == 3
-	IVAR3 = EXCEP_IRQ_LEVEL3;
-#elif CONFIG_GDBSTUB_IRQ_LEVEL == 4
-	IVAR4 = EXCEP_IRQ_LEVEL4;
-#elif CONFIG_GDBSTUB_IRQ_LEVEL == 5
-	IVAR5 = EXCEP_IRQ_LEVEL5;
-#else
-#error "Unknown irq level for gdbstub."
-#endif
-
-	set_intr_stub(NUM2EXCEP_IRQ_LEVEL(CONFIG_GDBSTUB_IRQ_LEVEL),
-		gdbstub_io_rx_handler);
-
-	XIRQxICR(GDBPORT_SERIAL_IRQ) &= ~GxICR_REQUEST;
-	XIRQxICR(GDBPORT_SERIAL_IRQ) =
-		GxICR_ENABLE | NUM2GxICR_LEVEL(CONFIG_GDBSTUB_IRQ_LEVEL);
-	tmp = XIRQxICR(GDBPORT_SERIAL_IRQ);
-
-	GDBPORT_SERIAL_IER = UART_IER_RDI | UART_IER_RLSI;
-
-	/* permit level 0 IRQs to take place */
-	arch_local_change_intr_mask_level(
-		NUM2EPSW_IM(CONFIG_GDBSTUB_IRQ_LEVEL + 1));
-}
-
-/*
- * set up the GDB stub serial port baud rate timers
- */
-void gdbstub_io_set_baud(unsigned baud)
-{
-	unsigned value;
-	u8 lcr;
-
-	value = 18432000 / 16 / baud;
-
-	lcr = GDBPORT_SERIAL_LCR;
-	GDBPORT_SERIAL_LCR |= UART_LCR_DLAB;
-	GDBPORT_SERIAL_DLL = value & 0xff;
-	GDBPORT_SERIAL_DLM = (value >> 8) & 0xff;
-	GDBPORT_SERIAL_LCR = lcr;
-}
-
-/*
- * wait for a character to come from the debugger
- */
-int gdbstub_io_rx_char(unsigned char *_ch, int nonblock)
-{
-	unsigned ix;
-	u8 ch, st;
-#if defined(CONFIG_MN10300_WD_TIMER)
-	int cpu;
-#endif
-
-	*_ch = 0xff;
-
-	if (gdbstub_rx_unget) {
-		*_ch = gdbstub_rx_unget;
-		gdbstub_rx_unget = 0;
-		return 0;
-	}
-
- try_again:
-	/* pull chars out of the buffer */
-	ix = gdbstub_rx_outp;
-	barrier();
-	if (ix == gdbstub_rx_inp) {
-		if (nonblock)
-			return -EAGAIN;
-#ifdef CONFIG_MN10300_WD_TIMER
-	for (cpu = 0; cpu < NR_CPUS; cpu++)
-		watchdog_alert_counter[cpu] = 0;
-#endif
-		goto try_again;
-	}
-
-	ch = gdbstub_rx_buffer[ix++];
-	st = gdbstub_rx_buffer[ix++];
-	barrier();
-	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_proto("### GDB Rx Error (st=%02x) ###\n", st);
-		return -EIO;
-	} else {
-		gdbstub_proto("### GDB Rx %02x (st=%02x) ###\n", ch, st);
-		*_ch = ch & 0x7f;
-		return 0;
-	}
-}
-
-/*
- * send a character to the debugger
- */
-void gdbstub_io_tx_char(unsigned char ch)
-{
-	FLOWCTL_SET(DTR);
-	LSR_WAIT_FOR(THRE);
-	/* FLOWCTL_WAIT_FOR(CTS); */
-
-	if (ch == 0x0a) {
-		GDBPORT_SERIAL_TX = 0x0d;
-		LSR_WAIT_FOR(THRE);
-		/* FLOWCTL_WAIT_FOR(CTS); */
-	}
-	GDBPORT_SERIAL_TX = ch;
-
-	FLOWCTL_CLEAR(DTR);
-}
-
-/*
- * send a character to the debugger
- */
-void gdbstub_io_tx_flush(void)
-{
-	LSR_WAIT_FOR(TEMT);
-	LSR_WAIT_FOR(THRE);
-	FLOWCTL_CLEAR(DTR);
-}