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@@ -1,181 +0,0 @@
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-/* drivers/android/ram_console.c
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- *
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- * Copyright (C) 2007-2008 Google, Inc.
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- *
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- * This software is licensed under the terms of the GNU General Public
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- * License version 2, as published by the Free Software Foundation, and
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- * may be copied, distributed, and modified under those terms.
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- *
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- * This program is distributed in the hope that it will be useful,
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- * but WITHOUT ANY WARRANTY; without even the implied warranty of
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- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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- * GNU General Public License for more details.
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- *
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- */
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-
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-#define pr_fmt(fmt) "ram_console: " fmt
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-
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-#include <linux/console.h>
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-#include <linux/init.h>
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-#include <linux/module.h>
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-#include <linux/platform_device.h>
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-#include <linux/proc_fs.h>
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-#include <linux/string.h>
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-#include <linux/uaccess.h>
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-#include <linux/io.h>
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-#include <linux/pstore_ram.h>
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-#include "ram_console.h"
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-
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-static struct persistent_ram_zone *ram_console_zone;
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-static const char *bootinfo;
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-static size_t bootinfo_size;
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-
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-static void
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-ram_console_write(struct console *console, const char *s, unsigned int count)
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-{
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- struct persistent_ram_zone *prz = console->data;
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- persistent_ram_write(prz, s, count);
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-}
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-
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-static struct console ram_console = {
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- .name = "ram",
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- .write = ram_console_write,
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- .flags = CON_PRINTBUFFER | CON_ENABLED | CON_ANYTIME,
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- .index = -1,
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-};
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-
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-void ram_console_enable_console(int enabled)
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-{
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- if (enabled)
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- ram_console.flags |= CON_ENABLED;
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- else
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- ram_console.flags &= ~CON_ENABLED;
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-}
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-
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-static int __init ram_console_probe(struct platform_device *pdev)
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-{
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- struct ram_console_platform_data *pdata = pdev->dev.platform_data;
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- struct persistent_ram_zone *prz;
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-
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- prz = persistent_ram_init_ringbuffer(&pdev->dev, true);
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- if (IS_ERR(prz))
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- return PTR_ERR(prz);
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-
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-
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- if (pdata) {
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- bootinfo = kstrdup(pdata->bootinfo, GFP_KERNEL);
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- if (bootinfo)
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- bootinfo_size = strlen(bootinfo);
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- }
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-
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- ram_console_zone = prz;
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- ram_console.data = prz;
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-
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- register_console(&ram_console);
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-
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- return 0;
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-}
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-
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-static struct platform_driver ram_console_driver = {
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- .driver = {
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- .name = "ram_console",
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- },
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-};
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-
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-static int __init ram_console_module_init(void)
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-{
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- return platform_driver_probe(&ram_console_driver, ram_console_probe);
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-}
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-
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-#ifndef CONFIG_PRINTK
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-#define dmesg_restrict 0
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-#endif
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-
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-static ssize_t ram_console_read_old(struct file *file, char __user *buf,
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- size_t len, loff_t *offset)
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-{
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- loff_t pos = *offset;
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- ssize_t count;
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- struct persistent_ram_zone *prz = ram_console_zone;
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- size_t old_log_size = persistent_ram_old_size(prz);
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- const char *old_log = persistent_ram_old(prz);
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- char *str;
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- int ret;
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-
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- if (dmesg_restrict && !capable(CAP_SYSLOG))
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- return -EPERM;
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-
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- /* Main last_kmsg log */
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- if (pos < old_log_size) {
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- count = min(len, (size_t)(old_log_size - pos));
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- if (copy_to_user(buf, old_log + pos, count))
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- return -EFAULT;
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- goto out;
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- }
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-
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- /* ECC correction notice */
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- pos -= old_log_size;
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- count = persistent_ram_ecc_string(prz, NULL, 0);
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- if (pos < count) {
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- str = kmalloc(count, GFP_KERNEL);
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- if (!str)
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- return -ENOMEM;
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- persistent_ram_ecc_string(prz, str, count + 1);
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- count = min(len, (size_t)(count - pos));
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- ret = copy_to_user(buf, str + pos, count);
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- kfree(str);
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- if (ret)
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- return -EFAULT;
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- goto out;
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- }
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-
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- /* Boot info passed through pdata */
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- pos -= count;
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- if (pos < bootinfo_size) {
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- count = min(len, (size_t)(bootinfo_size - pos));
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- if (copy_to_user(buf, bootinfo + pos, count))
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- return -EFAULT;
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- goto out;
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- }
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-
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- /* EOF */
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- return 0;
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-
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-out:
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- *offset += count;
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- return count;
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-}
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-
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-static const struct file_operations ram_console_file_ops = {
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- .owner = THIS_MODULE,
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- .read = ram_console_read_old,
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-};
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-
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-static int __init ram_console_late_init(void)
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-{
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- struct proc_dir_entry *entry;
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- struct persistent_ram_zone *prz = ram_console_zone;
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-
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- if (!prz)
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- return 0;
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-
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- if (persistent_ram_old_size(prz) == 0)
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- return 0;
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-
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- entry = create_proc_entry("last_kmsg", S_IFREG | S_IRUGO, NULL);
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- if (!entry) {
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- pr_err("failed to create proc entry\n");
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- persistent_ram_free_old(prz);
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- return 0;
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- }
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-
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- entry->proc_fops = &ram_console_file_ops;
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- entry->size = persistent_ram_old_size(prz) +
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- persistent_ram_ecc_string(prz, NULL, 0) +
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- bootinfo_size;
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-
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- return 0;
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-}
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-
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-late_initcall(ram_console_late_init);
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-postcore_initcall(ram_console_module_init);
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