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Diffstat (limited to 'arch/v850/kernel/memcons.c')
-rw-r--r--arch/v850/kernel/memcons.c135
1 files changed, 0 insertions, 135 deletions
diff --git a/arch/v850/kernel/memcons.c b/arch/v850/kernel/memcons.c
deleted file mode 100644
index 92f514fdcc79..000000000000
--- a/arch/v850/kernel/memcons.c
+++ /dev/null
@@ -1,135 +0,0 @@
-/*
- * arch/v850/kernel/memcons.c -- Console I/O to a memory buffer
- *
- * Copyright (C) 2001,02 NEC Corporation
- * Copyright (C) 2001,02 Miles Bader <miles@gnu.org>
- *
- * 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.
- *
- * Written by Miles Bader <miles@gnu.org>
- */
-
-#include <linux/kernel.h>
-#include <linux/console.h>
-#include <linux/tty.h>
-#include <linux/tty_driver.h>
-#include <linux/init.h>
-
-/* If this device is enabled, the linker map should define start and
- end points for its buffer. */
-extern char memcons_output[], memcons_output_end;
-
-/* Current offset into the buffer. */
-static unsigned long memcons_offs = 0;
-
-/* Spinlock protecting memcons_offs. */
-static DEFINE_SPINLOCK(memcons_lock);
-
-
-static size_t write (const char *buf, size_t len)
-{
- unsigned long flags;
- char *point;
-
- spin_lock_irqsave (memcons_lock, flags);
-
- point = memcons_output + memcons_offs;
- if (point + len >= &memcons_output_end) {
- len = &memcons_output_end - point;
- memcons_offs = 0;
- } else
- memcons_offs += len;
-
- spin_unlock_irqrestore (memcons_lock, flags);
-
- memcpy (point, buf, len);
-
- return len;
-}
-
-
-/* Low-level console. */
-
-static void memcons_write (struct console *co, const char *buf, unsigned len)
-{
- while (len > 0)
- len -= write (buf, len);
-}
-
-static struct tty_driver *tty_driver;
-
-static struct tty_driver *memcons_device (struct console *co, int *index)
-{
- *index = co->index;
- return tty_driver;
-}
-
-static struct console memcons =
-{
- .name = "memcons",
- .write = memcons_write,
- .device = memcons_device,
- .flags = CON_PRINTBUFFER,
- .index = -1,
-};
-
-void memcons_setup (void)
-{
- register_console (&memcons);
- printk (KERN_INFO "Console: static memory buffer (memcons)\n");
-}
-
-/* Higher level TTY interface. */
-
-int memcons_tty_open (struct tty_struct *tty, struct file *filp)
-{
- return 0;
-}
-
-int memcons_tty_write (struct tty_struct *tty, const unsigned char *buf, int len)
-{
- return write (buf, len);
-}
-
-int memcons_tty_write_room (struct tty_struct *tty)
-{
- return &memcons_output_end - (memcons_output + memcons_offs);
-}
-
-int memcons_tty_chars_in_buffer (struct tty_struct *tty)
-{
- /* We have no buffer. */
- return 0;
-}
-
-static const struct tty_operations ops = {
- .open = memcons_tty_open,
- .write = memcons_tty_write,
- .write_room = memcons_tty_write_room,
- .chars_in_buffer = memcons_tty_chars_in_buffer,
-};
-
-int __init memcons_tty_init (void)
-{
- int err;
- struct tty_driver *driver = alloc_tty_driver(1);
- if (!driver)
- return -ENOMEM;
-
- driver->name = "memcons";
- driver->major = TTY_MAJOR;
- driver->minor_start = 64;
- driver->type = TTY_DRIVER_TYPE_SYSCONS;
- driver->init_termios = tty_std_termios;
- tty_set_operations(driver, &ops);
- err = tty_register_driver(driver);
- if (err) {
- put_tty_driver(driver);
- return err;
- }
- tty_driver = driver;
- return 0;
-}
-__initcall (memcons_tty_init);