diff --git a/drivers/char/generic_nvram.c b/drivers/char/generic_nvram.c
index a00869c..ef31738 100644
--- a/drivers/char/generic_nvram.c
+++ b/drivers/char/generic_nvram.c
@@ -2,7 +2,7 @@
  * Generic /dev/nvram driver for architectures providing some
  * "generic" hooks, that is :
  *
- * nvram_read_byte, nvram_write_byte, nvram_sync
+ * nvram_read_byte, nvram_write_byte, nvram_sync, nvram_get_size
  *
  * Note that an additional hook is supported for PowerMac only
  * for getting the nvram "partition" informations
@@ -28,6 +28,8 @@
 
 #define NVRAM_SIZE	8192
 
+static ssize_t nvram_len;
+
 static loff_t nvram_llseek(struct file *file, loff_t offset, int origin)
 {
 	lock_kernel();
@@ -36,7 +38,7 @@
 		offset += file->f_pos;
 		break;
 	case 2:
-		offset += NVRAM_SIZE;
+		offset += nvram_len;
 		break;
 	}
 	if (offset < 0) {
@@ -56,9 +58,9 @@
 
 	if (!access_ok(VERIFY_WRITE, buf, count))
 		return -EFAULT;
-	if (*ppos >= NVRAM_SIZE)
+	if (*ppos >= nvram_len)
 		return 0;
-	for (i = *ppos; count > 0 && i < NVRAM_SIZE; ++i, ++p, --count)
+	for (i = *ppos; count > 0 && i < nvram_len; ++i, ++p, --count)
 		if (__put_user(nvram_read_byte(i), p))
 			return -EFAULT;
 	*ppos = i;
@@ -74,9 +76,9 @@
 
 	if (!access_ok(VERIFY_READ, buf, count))
 		return -EFAULT;
-	if (*ppos >= NVRAM_SIZE)
+	if (*ppos >= nvram_len)
 		return 0;
-	for (i = *ppos; count > 0 && i < NVRAM_SIZE; ++i, ++p, --count) {
+	for (i = *ppos; count > 0 && i < nvram_len; ++i, ++p, --count) {
 		if (__get_user(c, p))
 			return -EFAULT;
 		nvram_write_byte(c, i);
@@ -133,9 +135,20 @@
 
 int __init nvram_init(void)
 {
+	int ret = 0;
+
 	printk(KERN_INFO "Generic non-volatile memory driver v%s\n",
 		NVRAM_VERSION);
-	return misc_register(&nvram_dev);
+	ret = misc_register(&nvram_dev);
+	if (ret != 0)
+		goto out;
+
+	nvram_len = nvram_get_size();
+	if (nvram_len < 0)
+		nvram_len = NVRAM_SIZE;
+
+out:
+	return ret;
 }
 
 void __exit nvram_cleanup(void)