[PATCH] xtensa: Architecture support for Tensilica Xtensa Part 8

#

# Automatically generated make config: don't edit

# Linux kernel version: 2.6.11-rc2

# Fri Feb 25 19:21:24 2005

#

CONFIG_FRAME_POINTER=y

CONFIG_XTENSA=y

# CONFIG_UID16 is not set

CONFIG_RWSEM_XCHGADD_ALGORITHM=y

CONFIG_HAVE_DEC_LOCK=y

CONFIG_GENERIC_HARDIRQS=y

#

# Code maturity level options

#

CONFIG_EXPERIMENTAL=y

CONFIG_CLEAN_COMPILE=y

CONFIG_BROKEN_ON_SMP=y

#

# General setup

#

CONFIG_LOCALVERSION=""

CONFIG_SWAP=y

CONFIG_SYSVIPC=y

# CONFIG_POSIX_MQUEUE is not set

# CONFIG_BSD_PROCESS_ACCT is not set

CONFIG_SYSCTL=y

# CONFIG_AUDIT is not set

CONFIG_LOG_BUF_SHIFT=14

# CONFIG_HOTPLUG is not set

# CONFIG_KOBJECT_UEVENT is not set

# CONFIG_IKCONFIG is not set

CONFIG_EMBEDDED=y

CONFIG_KALLSYMS=y

# CONFIG_KALLSYMS_ALL is not set

# CONFIG_KALLSYMS_EXTRA_PASS is not set

CONFIG_FUTEX=y

CONFIG_EPOLL=y

# CONFIG_CC_OPTIMIZE_FOR_SIZE is not set

CONFIG_SHMEM=y

CONFIG_CC_ALIGN_FUNCTIONS=0

CONFIG_CC_ALIGN_LABELS=0

CONFIG_CC_ALIGN_LOOPS=0

CONFIG_CC_ALIGN_JUMPS=0

# CONFIG_TINY_SHMEM is not set

#

# Loadable module support

#

# CONFIG_MODULES is not set

#

# Processor type and features

#

CONFIG_XTENSA_ARCH_LINUX_BE=y

# CONFIG_XTENSA_ARCH_LINUX_LE is not set

# CONFIG_XTENSA_ARCH_LINUX_TEST is not set

# CONFIG_XTENSA_ARCH_S5 is not set

# CONFIG_XTENSA_CUSTOM is not set

CONFIG_MMU=y

# CONFIG_XTENSA_UNALIGNED_USER is not set

# CONFIG_PREEMPT is not set

# CONFIG_MATH_EMULATION is not set

# CONFIG_HIGHMEM is not set

#

# Platform options

#

CONFIG_XTENSA_PLATFORM_ISS=y

# CONFIG_XTENSA_PLATFORM_XT2000 is not set

# CONFIG_XTENSA_PLATFORM_ARUBA is not set

# CONFIG_XTENSA_CALIBRATE_CCOUNT is not set

CONFIG_XTENSA_CPU_CLOCK=10

# CONFIG_GENERIC_CALIBRATE_DELAY is not set

CONFIG_CMDLINE_BOOL=y

CONFIG_CMDLINE="console=ttyS0,38400 eth0=tuntap,,tap0 ip=192.168.168.5:192.168.168.1 root=nfs nfsroot=192.168.168.1:/opt/montavista/pro/devkit/xtensa/linux_be/target"

CONFIG_SERIAL_CONSOLE=y

CONFIG_XTENSA_ISS_NETWORK=y

#

# Bus options

#

#

# PCCARD (PCMCIA/CardBus) support

#

# CONFIG_PCCARD is not set

#

# PC-card bridges

#

#

# PCI Hotplug Support

#

#

# Exectuable file formats

#

CONFIG_KCORE_ELF=y

CONFIG_BINFMT_ELF=y

# CONFIG_BINFMT_MISC is not set

#

# Device Drivers

#

#

# Generic Driver Options

#

# CONFIG_STANDALONE is not set

CONFIG_PREVENT_FIRMWARE_BUILD=y

# CONFIG_FW_LOADER is not set

# CONFIG_DEBUG_DRIVER is not set

#

# Memory Technology Devices (MTD)

#

# CONFIG_MTD is not set

#

# Parallel port support

#

# CONFIG_PARPORT is not set

#

# Plug and Play support

#

#

# Block devices

#

# CONFIG_BLK_DEV_FD is not set

# CONFIG_BLK_DEV_COW_COMMON is not set

# CONFIG_BLK_DEV_LOOP is not set

# CONFIG_BLK_DEV_NBD is not set

# CONFIG_BLK_DEV_RAM is not set

CONFIG_BLK_DEV_RAM_COUNT=16

CONFIG_INITRAMFS_SOURCE=""

# CONFIG_CDROM_PKTCDVD is not set

#

# IO Schedulers

#

CONFIG_IOSCHED_NOOP=y

# CONFIG_IOSCHED_AS is not set

# CONFIG_IOSCHED_DEADLINE is not set

# CONFIG_IOSCHED_CFQ is not set

# CONFIG_ATA_OVER_ETH is not set

#

# ATA/ATAPI/MFM/RLL support

#

# CONFIG_IDE is not set

#

# SCSI device support

#

# CONFIG_SCSI is not set

#

# Multi-device support (RAID and LVM)

#

# CONFIG_MD is not set

#

# Fusion MPT device support

#

#

# IEEE 1394 (FireWire) support

#

#

# I2O device support

#

#

# Networking support

#

CONFIG_NET=y

#

# Networking options

#

CONFIG_PACKET=y

# CONFIG_PACKET_MMAP is not set

# CONFIG_NETLINK_DEV is not set

CONFIG_UNIX=y

# CONFIG_NET_KEY is not set

CONFIG_INET=y

# CONFIG_IP_MULTICAST is not set

# CONFIG_IP_ADVANCED_ROUTER is not set

CONFIG_IP_PNP=y

CONFIG_IP_PNP_DHCP=y

CONFIG_IP_PNP_BOOTP=y

CONFIG_IP_PNP_RARP=y

# CONFIG_NET_IPIP is not set

# CONFIG_NET_IPGRE is not set

# CONFIG_ARPD is not set

# CONFIG_SYN_COOKIES is not set

# CONFIG_INET_AH is not set

# CONFIG_INET_ESP is not set

# CONFIG_INET_IPCOMP is not set

# CONFIG_INET_TUNNEL is not set

# CONFIG_IP_TCPDIAG is not set

# CONFIG_IP_TCPDIAG_IPV6 is not set

# CONFIG_IPV6 is not set

# CONFIG_NETFILTER is not set

#

# SCTP Configuration (EXPERIMENTAL)

#

# CONFIG_IP_SCTP is not set

# CONFIG_SCTP_HMAC_NONE is not set

# CONFIG_SCTP_HMAC_SHA1 is not set

# CONFIG_SCTP_HMAC_MD5 is not set

# CONFIG_ATM is not set

# CONFIG_BRIDGE is not set

# CONFIG_VLAN_8021Q is not set

# CONFIG_DECNET is not set

# CONFIG_LLC2 is not set

# CONFIG_IPX is not set

# CONFIG_ATALK is not set

# CONFIG_X25 is not set

# CONFIG_LAPB is not set

# CONFIG_NET_DIVERT is not set

# CONFIG_ECONET is not set

# CONFIG_WAN_ROUTER is not set

#

# QoS and/or fair queueing

#

# CONFIG_NET_SCHED is not set

# CONFIG_NET_SCH_CLK_JIFFIES is not set

# CONFIG_NET_SCH_CLK_GETTIMEOFDAY is not set

# CONFIG_NET_SCH_CLK_CPU is not set

# CONFIG_NET_CLS_ROUTE is not set

#

# Network testing

#

# CONFIG_NET_PKTGEN is not set

# CONFIG_NETPOLL is not set

# CONFIG_NET_POLL_CONTROLLER is not set

# CONFIG_HAMRADIO is not set

# CONFIG_IRDA is not set

# CONFIG_BT is not set

# CONFIG_NETDEVICES is not set

#

# ISDN subsystem

#

# CONFIG_ISDN is not set

#

# Telephony Support

#

# CONFIG_PHONE is not set

#

# Input device support

#

CONFIG_INPUT=y

#

# Userland interfaces

#

# CONFIG_INPUT_MOUSEDEV is not set

# CONFIG_INPUT_JOYDEV is not set

# CONFIG_INPUT_TSDEV is not set

# CONFIG_INPUT_EVDEV is not set

# CONFIG_INPUT_EVBUG is not set

#

# Input I/O drivers

#

# CONFIG_GAMEPORT is not set

CONFIG_SOUND_GAMEPORT=y

# CONFIG_SERIO is not set

# CONFIG_SERIO_I8042 is not set

#

# Input Device Drivers

#

# CONFIG_INPUT_KEYBOARD is not set

# CONFIG_INPUT_MOUSE is not set

# CONFIG_INPUT_JOYSTICK is not set

# CONFIG_INPUT_TOUCHSCREEN is not set

# CONFIG_INPUT_MISC is not set

#

# Character devices

#

CONFIG_VT=y

CONFIG_VT_CONSOLE=y

CONFIG_HW_CONSOLE=y

# CONFIG_SERIAL_NONSTANDARD is not set

#

# Serial drivers

#

# CONFIG_SERIAL_8250 is not set

#

# Non-8250 serial port support

#

CONFIG_UNIX98_PTYS=y

CONFIG_LEGACY_PTYS=y

CONFIG_LEGACY_PTY_COUNT=256

#

# IPMI

#

# CONFIG_IPMI_HANDLER is not set

#

# Watchdog Cards

#

CONFIG_WATCHDOG=y

CONFIG_WATCHDOG_NOWAYOUT=y

#

# Watchdog Device Drivers

#

CONFIG_SOFT_WATCHDOG=y

# CONFIG_RTC is not set

# CONFIG_GEN_RTC is not set

# CONFIG_DTLK is not set

# CONFIG_R3964 is not set

#

# Ftape, the floppy tape device driver

#

# CONFIG_DRM is not set

# CONFIG_RAW_DRIVER is not set

#

# I2C support

#

# CONFIG_I2C is not set

#

# Dallas's 1-wire bus

#

# CONFIG_W1 is not set

#

# Misc devices

#

#

# Multimedia devices

#

# CONFIG_VIDEO_DEV is not set

#

# Digital Video Broadcasting Devices

#

# CONFIG_DVB is not set

#

# Graphics support

#

# CONFIG_FB is not set

#

# Console display driver support

#

# CONFIG_VGA_CONSOLE is not set

CONFIG_DUMMY_CONSOLE=y

# CONFIG_BACKLIGHT_LCD_SUPPORT is not set

#

# Sound

#

# CONFIG_SOUND is not set

#

# USB support

#

# CONFIG_USB_ARCH_HAS_HCD is not set

# CONFIG_USB_ARCH_HAS_OHCI is not set

#

# NOTE: USB_STORAGE enables SCSI, and 'SCSI disk support' may also be needed; see USB_STORAGE Help for more information

#

#

# USB Gadget Support

#

# CONFIG_USB_GADGET is not set

#

# MMC/SD Card support

#

# CONFIG_MMC is not set

#

# InfiniBand support

#

# CONFIG_INFINIBAND is not set

#

# File systems

#

# CONFIG_EXT2_FS is not set

# CONFIG_EXT3_FS is not set

# CONFIG_JBD is not set

# CONFIG_REISERFS_FS is not set

# CONFIG_JFS_FS is not set

# CONFIG_XFS_FS is not set

# CONFIG_MINIX_FS is not set

# CONFIG_ROMFS_FS is not set

# CONFIG_QUOTA is not set

# CONFIG_DNOTIFY is not set

# CONFIG_AUTOFS_FS is not set

# CONFIG_AUTOFS4_FS is not set

#

# CD-ROM/DVD Filesystems

#

# CONFIG_ISO9660_FS is not set

# CONFIG_UDF_FS is not set

#

# DOS/FAT/NT Filesystems

#

# CONFIG_MSDOS_FS is not set

# CONFIG_VFAT_FS is not set

# CONFIG_NTFS_FS is not set

#

# Pseudo filesystems

#

CONFIG_PROC_FS=y

CONFIG_PROC_KCORE=y

CONFIG_SYSFS=y

CONFIG_DEVFS_FS=y

CONFIG_DEVFS_MOUNT=y

# CONFIG_DEVFS_DEBUG is not set

# CONFIG_DEVPTS_FS_XATTR is not set

CONFIG_TMPFS=y

# CONFIG_TMPFS_XATTR is not set

# CONFIG_HUGETLB_PAGE is not set

CONFIG_RAMFS=y

#

# Miscellaneous filesystems

#

# CONFIG_ADFS_FS is not set

# CONFIG_AFFS_FS is not set

# CONFIG_HFS_FS is not set

# CONFIG_HFSPLUS_FS is not set

# CONFIG_BEFS_FS is not set

# CONFIG_BFS_FS is not set

# CONFIG_EFS_FS is not set

# CONFIG_CRAMFS is not set

# CONFIG_VXFS_FS is not set

# CONFIG_HPFS_FS is not set

# CONFIG_QNX4FS_FS is not set

# CONFIG_SYSV_FS is not set

# CONFIG_UFS_FS is not set

#

# Network File Systems

#

CONFIG_NFS_FS=y

CONFIG_NFS_V3=y

# CONFIG_NFS_V4 is not set

CONFIG_NFS_DIRECTIO=y

# CONFIG_NFSD is not set

CONFIG_ROOT_NFS=y

CONFIG_LOCKD=y

CONFIG_LOCKD_V4=y

# CONFIG_EXPORTFS is not set

CONFIG_SUNRPC=y

# CONFIG_RPCSEC_GSS_KRB5 is not set

# CONFIG_RPCSEC_GSS_SPKM3 is not set

# CONFIG_SMB_FS is not set

# CONFIG_CIFS is not set

# CONFIG_NCP_FS is not set

# CONFIG_CODA_FS is not set

# CONFIG_AFS_FS is not set

#

# Partition Types

#

# CONFIG_PARTITION_ADVANCED is not set

CONFIG_MSDOS_PARTITION=y

#

# Native Language Support

#

# CONFIG_NLS is not set

#

# Kernel hacking

#

CONFIG_DEBUG_KERNEL=y

# CONFIG_DEBUG_STACKOVERFLOW is not set

# CONFIG_DEBUG_SLAB is not set

# CONFIG_MAGIC_SYSRQ is not set

# CONFIG_DEBUG_SPINLOCK is not set

# CONFIG_DEBUG_PAGEALLOC is not set

# CONFIG_DEBUG_INFO is not set

# CONFIG_DEBUG_SPINLOCK_SLEEP is not set

# CONFIG_KGDB is not set

#

# Security options

#

# CONFIG_KEYS is not set

# CONFIG_SECURITY is not set

#

# Cryptographic options

#

# CONFIG_CRYPTO is not set

#

# Hardware crypto devices

#

#

# Library routines

#

# CONFIG_CRC_CCITT is not set

# CONFIG_CRC32 is not set

# CONFIG_LIBCRC32C is not set

# $Id: Makefile,v 1.1.1.1 2002/08/28 16:10:14 aroll Exp $

#

# Makefile for the Xtensa Instruction Set Simulator (ISS)

# "prom monitor" library routines under Linux.

#

# Note! Dependencies are done automagically by 'make dep', which also

# removes any old dependencies. DON'T put your own dependencies here

# unless it's something special (ie not a .c file).

#

# Note 2! The CFLAGS definitions are in the main makefile...

obj-y			= io.o console.o setup.o network.o

/*

 * arch/xtensa/platform-iss/console.c

 *

 * 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.

 *

 * Copyright (C) 2001-2005 Tensilica Inc.

 *   Authors	Christian Zankel, Joe Taylor

 */

#include <linux/module.h>

#include <linux/config.h>

#include <linux/kernel.h>

#include <linux/sched.h>

#include <linux/console.h>

#include <linux/init.h>

#include <linux/slab.h>

#include <linux/mm.h>

#include <linux/major.h>

#include <linux/param.h>

#include <linux/serial.h>

#include <linux/serialP.h>

#include <linux/console.h>

#include <asm/uaccess.h>

#include <asm/irq.h>

#include <xtensa/simcall.h>

#include <linux/tty.h>

#include <linux/tty_flip.h>

#ifdef SERIAL_INLINE

#define _INLINE_ inline

#endif

#define SERIAL_MAX_NUM_LINES 1

#define SERIAL_TIMER_VALUE (20 * HZ)

static struct tty_driver *serial_driver;

static struct timer_list serial_timer;

static DEFINE_SPINLOCK(timer_lock);

int errno;

static int __simc (int a, int b, int c, int d, int e, int f)

{

	int ret;

	__asm__ __volatile__ ("simcall\n"

			"mov %0, a2\n"

			"mov %1, a3\n" : "=a" (ret), "=a" (errno)

			: : "a2", "a3");

	return ret;

}

static char *serial_version = "0.1";

static char *serial_name = "ISS serial driver";

/*

 * This routine is called whenever a serial port is opened.  It

 * enables interrupts for a serial port, linking in its async structure into

 * the IRQ chain.   It also performs the serial-specific

 * initialization for the tty structure.

 */

static void rs_poll(unsigned long);

static int rs_open(struct tty_struct *tty, struct file * filp)

{

	int line = tty->index;

	if ((line < 0) || (line >= SERIAL_MAX_NUM_LINES))

		return -ENODEV;

	spin_lock(&timer_lock);

	if (tty->count == 1) {

		init_timer(&serial_timer);

		serial_timer.data = (unsigned long) tty;

		serial_timer.function = rs_poll;

		mod_timer(&serial_timer, jiffies + SERIAL_TIMER_VALUE);

	}

	spin_unlock(&timer_lock);

	return 0;

}

/*

 * ------------------------------------------------------------

 * iss_serial_close()

 *

 * This routine is called when the serial port gets closed.  First, we

 * wait for the last remaining data to be sent.  Then, we unlink its

 * async structure from the interrupt chain if necessary, and we free

 * that IRQ if nothing is left in the chain.

 * ------------------------------------------------------------

 */

static void rs_close(struct tty_struct *tty, struct file * filp)

{

	spin_lock(&timer_lock);

	if (tty->count == 1)

		del_timer_sync(&serial_timer);

	spin_unlock(&timer_lock);

}

static int rs_write(struct tty_struct * tty,

		    const unsigned char *buf, int count)

{

	/* see drivers/char/serialX.c to reference original version */

	__simc (SYS_write, 1, (unsigned long)buf, count, 0, 0);

	return count;

}

static void rs_poll(unsigned long priv)

{

	struct tty_struct* tty = (struct tty_struct*) priv;

	struct timeval tv = { .tv_sec = 0, .tv_usec = 0 };

	int i = 0;

	unsigned char c;

	spin_lock(&timer_lock);

	while (__simc(SYS_select_one, 0, XTISS_SELECT_ONE_READ, (int)&tv,0,0)){

		__simc (SYS_read, 0, (unsigned long)&c, 1, 0, 0);

		tty->flip.count++;

		*tty->flip.char_buf_ptr++ = c;

		*tty->flip.flag_buf_ptr++ = TTY_NORMAL;

		i++;

	}

	if (i)

		tty_flip_buffer_push(tty);

	mod_timer(&serial_timer, jiffies + SERIAL_TIMER_VALUE);

	spin_unlock(&timer_lock);

}

static void rs_put_char(struct tty_struct *tty, unsigned char ch)

{

	char buf[2];

	if (!tty)

		return;

	buf[0] = ch;

	buf[1] = '\0';		/* Is this NULL necessary? */

	__simc (SYS_write, 1, (unsigned long) buf, 1, 0, 0);

}

static void rs_flush_chars(struct tty_struct *tty)

{

}

static int rs_write_room(struct tty_struct *tty)

{

	/* Let's say iss can always accept 2K characters.. */

	return 2 * 1024;

}

static int rs_chars_in_buffer(struct tty_struct *tty)

{

	/* the iss doesn't buffer characters */

	return 0;

}

static void rs_hangup(struct tty_struct *tty)

{

	/* Stub, once again.. */

}

static void rs_wait_until_sent(struct tty_struct *tty, int timeout)

{

	/* Stub, once again.. */

}

static int rs_read_proc(char *page, char **start, off_t off, int count,

			int *eof, void *data)

{

	int len = 0;

	off_t begin = 0;

	len += sprintf(page, "serinfo:1.0 driver:%s\n", serial_version);

	*eof = 1;

	if (off >= len + begin)

		return 0;

	*start = page + (off - begin);

	return ((count < begin + len - off) ? count : begin + len - off);

}

int register_serial(struct serial_struct*);

void unregister_serial(int);

static struct tty_operations serial_ops = {

	.open = rs_open,

	.close = rs_close,

	.write = rs_write,

	.put_char = rs_put_char,

	.flush_chars = rs_flush_chars,

	.write_room = rs_write_room,

	.chars_in_buffer = rs_chars_in_buffer,

	.hangup = rs_hangup,

	.wait_until_sent = rs_wait_until_sent,

	.read_proc = rs_read_proc

};

int __init rs_init(void)

{

	serial_driver = alloc_tty_driver(1);

	printk ("%s %s\n", serial_name, serial_version);

	/* Initialize the tty_driver structure */

	serial_driver->owner = THIS_MODULE;

	serial_driver->driver_name = "iss_serial";

	serial_driver->name = "ttyS";

	serial_driver->major = TTY_MAJOR;

	serial_driver->minor_start = 64;

	serial_driver->type = TTY_DRIVER_TYPE_SERIAL;

	serial_driver->subtype = SERIAL_TYPE_NORMAL;

	serial_driver->init_termios = tty_std_termios;

	serial_driver->init_termios.c_cflag =

		B9600 | CS8 | CREAD | HUPCL | CLOCAL;

	serial_driver->flags = TTY_DRIVER_REAL_RAW;

	tty_set_operations(serial_driver, &serial_ops);

	if (tty_register_driver(serial_driver))

		panic("Couldn't register serial driver\n");

	return 0;

}

static __exit void rs_exit(void)

{

	int error;

	if ((error = tty_unregister_driver(serial_driver)))

		printk("ISS_SERIAL: failed to unregister serial driver (%d)\n",

		       error);

	put_tty_driver(serial_driver);

}

/* We use `late_initcall' instead of just `__initcall' as a workaround for

 * the fact that (1) simcons_tty_init can't be called before tty_init,

 * (2) tty_init is called via `module_init', (3) if statically linked,

 * module_init == device_init, and (4) there's no ordering of init lists.

 * We can do this easily because simcons is always statically linked, but

 * other tty drivers that depend on tty_init and which must use

 * `module_init' to declare their init routines are likely to be broken.

 */

late_initcall(rs_init);

#ifdef CONFIG_SERIAL_CONSOLE

static void iss_console_write(struct console *co, const char *s, unsigned count)

{

	int len = strlen(s);

	if (s != 0 && *s != 0)

		__simc (SYS_write, 1, (unsigned long)s,

			count < len ? count : len,0,0);

}

static struct tty_driver* iss_console_device(struct console *c, int *index)

{

	*index = c->index;

	return serial_driver;

}

static struct console sercons = {

	.name = "ttyS",

	.write = iss_console_write,

	.device = iss_console_device,

	.flags = CON_PRINTBUFFER,

	.index = -1

};

static int __init iss_console_init(void)

{

	register_console(&sercons);

	return 0;

}

console_initcall(iss_console_init);

#endif /* CONFIG_SERIAL_CONSOLE */

/* This file isn't really needed right now. */

#if 0

#include <asm/io.h>

#include <xtensa/simcall.h>

extern int __simc ();

char iss_serial_getc()

{

  char c;

  __simc( SYS_read, 0, &c, 1 );

  return c;

}

void iss_serial_putc( char c )

{

  __simc( SYS_write, 1, &c, 1 );

}

void iss_serial_puts( char *s )

{

  if( s != 0 && *s != 0 )

    __simc( SYS_write, 1, s, strlen(s) );

}

/*#error Need I/O ports to specific hardware!*/

#endif