NDUID palm specific driver
diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
index b9842d3..be0901b 100644
--- a/drivers/misc/Kconfig
+++ b/drivers/misc/Kconfig
@@ -744,6 +744,12 @@
---help---
Select Y if you want to enable High resolution counter.
+config NDUID
+ bool "Nova Device ID"
+ default n
+ ---help---
+ This option exports the Nova Device ID to /proc/nduid.
+
source "drivers/misc/c2port/Kconfig"
source "drivers/misc/eeprom/Kconfig"
source "drivers/misc/cb710/Kconfig"
diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile
index 9beda2d..838eb35 100644
--- a/drivers/misc/Makefile
+++ b/drivers/misc/Makefile
@@ -84,3 +84,5 @@
obj-$(CONFIG_AMP_RT5501) += rt5501.o
obj-$(CONFIG_A6) += a6/
obj-$(CONFIG_HRES_COUNTER) += hres_counter.o
+obj-$(CONFIG_NDUID) += nduid.o
+
diff --git a/drivers/misc/nduid.c b/drivers/misc/nduid.c
new file mode 100644
index 0000000..5153822
--- /dev/null
+++ b/drivers/misc/nduid.c
@@ -0,0 +1,303 @@
+/*
+ * drivers/misc/nduid.c
+ *
+ * Copyright (C) 2009 Palm, Inc.
+ * Author: Yvonne Yip <y@palm.com>
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+#include <linux/crypto.h>
+#include <linux/miscdevice.h>
+#include <linux/platform_device.h>
+#include <linux/nduid.h>
+
+static void *nduid_start(struct seq_file *m, loff_t *pos)
+{
+ return *pos < 1 ? (void *)1 : NULL;
+}
+
+static void *nduid_next(struct seq_file *m, void *v, loff_t *pos)
+{
+ ++pos;
+ return NULL;
+}
+
+static void nduid_stop(struct seq_file *m, void *v)
+{
+ /* nothing to do */
+}
+
+static unsigned char nduid[128];
+
+static int nduid_show(struct seq_file *m, void *v)
+{
+ seq_printf(m, "%s\n", nduid);
+ return 0;
+}
+
+static struct seq_operations nduid_ops = {
+ .start = nduid_start,
+ .next = nduid_next,
+ .stop = nduid_stop,
+ .show = nduid_show,
+};
+
+static int nduid_proc_open(struct inode *inode, struct file *file)
+{
+ return seq_open(file, &nduid_ops);
+}
+
+static struct file_operations nduid_proc_ops = {
+ .open = nduid_proc_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = seq_release,
+};
+
+static int __init nduid_setup(char *str)
+{
+ strncpy(nduid, str, sizeof(nduid));
+ return 0;
+}
+__setup("nduid=", nduid_setup);
+
+struct nduid_ctxt {
+ struct miscdevice mdev;
+ struct file_operations fops;
+ unsigned char *nduid_binary;
+ size_t nduid_binary_len;
+};
+
+static struct nduid_ctxt *_nduid_ctxt = NULL;
+
+static ssize_t nduid_mdev_read(struct file *file, char __user *buf,
+ size_t count, loff_t *ptr)
+{
+ struct nduid_ctxt *ctxt;
+
+ ctxt = container_of(file->f_op, struct nduid_ctxt, fops);
+
+ if (count < ctxt->nduid_binary_len) {
+ return -EINVAL;
+ }
+
+ if (copy_to_user(buf, ctxt->nduid_binary, ctxt->nduid_binary_len)) {
+ return -EFAULT;
+ }
+ return ctxt->nduid_binary_len;
+}
+
+static struct file_operations nduid_mdev_fops = {
+ .owner = THIS_MODULE,
+ .read = nduid_mdev_read,
+ .open = nonseekable_open,
+};
+
+/*
+ * nduid_hex_to_char - This function gets an input string
+ * of 2 characters, and converts it into an unsigned
+ * character equivalent.
+ * Returns -1 on error
+ */
+static int nduid_hex_to_char (char *source, unsigned char *dest)
+{
+ unsigned char x, c = 0;
+ if ( (NULL == source) || (source+1 == NULL) ) {
+ return -1;
+ }
+ if (NULL == dest) {
+ return -1;
+ }
+
+ x = source[0];
+ // Ignore zeros on the high part, since the nduid
+ // would have been padded with zeros, for single
+ // characters (e.g 0xa would be 0x0a in the nduid string)
+
+ if ('0' != x) {
+ if ( (x >= '0') && (x <= '9') ) {
+ c = x - '0';
+ } else if ( (x >= 'a') && (x <= 'f') ) {
+ c = x - 'a' + 10;
+ } else if ( (x >= 'A') && (x <= 'F') ) {
+ c = x - 'A' + 10;
+ } else {
+ return -1;
+ }
+ c <<= 4;
+ }
+
+ x = source[1];
+
+ if ( (x >= '0') && (x <= '9') ) {
+ c |= (x - '0');
+ } else if ( (x >= 'a') && (x <= 'f') ) {
+ c |= (x - 'a' + 10);
+ } else if ( (x >= 'A') && (x <= 'F') ) {
+ c |= (x - 'A' + 10);
+ } else {
+ return -1;
+ }
+ *dest = c;
+ return 0;
+}
+
+
+static int nduid_probe(struct platform_device *pdev)
+{
+ int r = 0, i;
+ struct nduid_config *pcfg;
+ struct nduid_ctxt *ctxt;
+ unsigned char c;
+ if (_nduid_ctxt) {
+ printk(KERN_ERR "nduid: more than one nduid device\n");
+ return -EINVAL;
+ }
+
+ pcfg = pdev->dev.platform_data;
+ if (!pcfg) {
+ printk(KERN_ERR "nduid: no platform data\n");
+ return -ENODEV;
+ }
+
+ ctxt = kzalloc(sizeof(struct nduid_ctxt), GFP_KERNEL);
+ if (!ctxt) {
+ printk(KERN_ERR "nduid: can't alloc ctxt\n");
+ return -ENOMEM;
+ }
+
+ _nduid_ctxt = ctxt;
+ platform_set_drvdata(pdev, ctxt);
+
+ // Allocate half the length of nduid, as 2 chars
+ // of the string, represent one byte of binary data
+ ctxt->nduid_binary_len = strlen (nduid) / 2;
+
+ ctxt->nduid_binary = kmalloc(ctxt->nduid_binary_len, GFP_KERNEL);
+ if (!ctxt->nduid_binary) {
+ printk(KERN_ERR "nduid: error allocating nduid binary\n");
+ goto nduid_probe_fail;
+ }
+
+ // Construct the binary data, from the nduid string
+ for (i = 0; i < ctxt->nduid_binary_len; i++) {
+ c = 0;
+ if (nduid_hex_to_char (nduid + (i*2), &c) ) {
+ break;
+ }
+ ctxt->nduid_binary [i] = c;
+ }
+
+ // If any errors in constructing the dev id,
+ // zero out the binary
+ if (i != ctxt->nduid_binary_len) {
+ memset(ctxt->nduid_binary, 0, ctxt->nduid_binary_len);
+ }
+
+ /* init misc device */
+ memcpy(&ctxt->fops, &nduid_mdev_fops, sizeof(struct file_operations));
+ ctxt->mdev.minor = MISC_DYNAMIC_MINOR;
+ ctxt->mdev.name = pcfg->dev_name;
+ ctxt->mdev.fops = &ctxt->fops;
+
+ /* register misc device */
+ r = misc_register(&ctxt->mdev);
+ if (r) {
+ printk(KERN_ERR "nduid: failed to register misc device\n");
+ goto nduid_probe_fail;
+ }
+ return 0;
+
+nduid_probe_fail:
+ if (ctxt) {
+ if (ctxt->nduid_binary) {
+ kfree(ctxt->nduid_binary);
+ }
+ kfree(ctxt);
+ }
+ return -1;
+}
+
+static int __devexit nduid_remove(struct platform_device *pdev)
+{
+ struct nduid_ctxt *ctxt;
+
+ ctxt = platform_get_drvdata(pdev);
+ if (!ctxt) {
+ return 0;
+ }
+
+ misc_deregister(&ctxt->mdev);
+
+ kfree(ctxt->nduid_binary);
+ kfree(ctxt);
+ return 0;
+}
+
+
+#ifdef CONFIG_PM
+static int nduid_suspend(struct platform_device *pdev, pm_message_t state)
+{
+ /* nothing to do */
+ return 0;
+}
+
+static int nduid_resume(struct platform_device *pdev)
+{
+ /* nothing to do */
+ return 0;
+}
+#else
+#define nduid_suspend NULL
+#define nduid_resume NULL
+#endif
+
+static struct platform_driver nduid_driver = {
+ .driver = {
+ .name = "nduid",
+ },
+ .probe = nduid_probe,
+ .remove = __devexit_p(nduid_remove),
+ .suspend = nduid_suspend,
+ .resume = nduid_resume,
+};
+
+static int __init nduid_init(void)
+{
+ struct proc_dir_entry *entry;
+
+ entry = create_proc_entry("nduid", S_IRUGO, NULL);
+ if (entry == NULL) {
+ return -1;
+ }
+
+ entry->proc_fops = &nduid_proc_ops;
+
+ printk(KERN_INFO "nduid: %s\n", nduid);
+
+ return platform_driver_register(&nduid_driver);
+}
+
+static void __exit nduid_exit(void)
+{
+ platform_driver_unregister(&nduid_driver);
+}
+
+module_init(nduid_init);
+module_exit(nduid_exit);
+
+MODULE_DESCRIPTION("Nova device UID driver");
+MODULE_LICENSE("GPL");
diff --git a/include/linux/nduid.h b/include/linux/nduid.h
new file mode 100644
index 0000000..e84c4d9
--- /dev/null
+++ b/include/linux/nduid.h
@@ -0,0 +1,8 @@
+#ifndef __ASM_ARCH_NDUID_H__
+#define __ASM_ARCH_NDUID_H__
+
+struct nduid_config {
+ char *dev_name;
+};
+
+#endif