static int __init
dev_nvram_init(void)
{
int ret;
/* Initialize hash table lock */
spin_lock_init(&nvram_lock);
nvram_values = kzalloc(NVRAM_VALUES_SPACE, GFP_ATOMIC);
if (!nvram_values)
return -ENOMEM;
/* Initialize hash table */
_nvram_init();
/* Register char device */
ret = register_chrdev(NVRAM_MAJOR, MTD_NVRAM_NAME, &dev_nvram_fops);
if (ret < 0) {
printk(KERN_ERR "NVRAM: unable to register character device\n");
goto err;
}
nvram_major = NVRAM_MAJOR;
g_pdentry = create_proc_read_entry(MTD_NVRAM_NAME, 0444, NULL, nvram_proc_version_read, NULL);
if (!g_pdentry) {
ret = -ENOMEM;
goto err;
}
printk("ASUS NVRAM: initialized. Available NVRAM space: %d\n", NVRAM_SPACE);
return 0;
err:
dev_nvram_exit();
return ret;
}
static int
dev_nvram_init(void)
{
int order = 0, ret = 0;
struct page *page, *end;
unsigned int i;
osl_t *osh;
/* Allocate and reserve memory to mmap() */
while ((PAGE_SIZE << order) < nvram_space)
order++;
end = virt_to_page(nvram_buf + (PAGE_SIZE << order) - 1);
for (page = virt_to_page(nvram_buf); page <= end; page++) {
SetPageReserved(page);
}
#if defined(CONFIG_MTD) || defined(CONFIG_MTD_MODULE)
/* Find associated MTD device */
for (i = 0; i < MAX_MTD_DEVICES; i++) {
nvram_mtd = get_mtd_device(NULL, i);
if (!IS_ERR(nvram_mtd)) {
if (!strcmp(nvram_mtd->name, "nvram") &&
nvram_mtd->size >= nvram_space) {
break;
}
put_mtd_device(nvram_mtd);
}
}
if (i >= MAX_MTD_DEVICES)
nvram_mtd = NULL;
#endif
/* Initialize hash table lock */
spin_lock_init(&nvram_lock);
/* Initialize commit semaphore */
init_MUTEX(&nvram_sem);
/* Register char device */
if ((nvram_major = register_chrdev(0, "nvram", &dev_nvram_fops)) < 0) {
ret = nvram_major;
goto err;
}
if (si_osh(sih) == NULL) {
osh = osl_attach(NULL, SI_BUS, FALSE);
if (osh == NULL) {
printk("Error allocating osh\n");
unregister_chrdev(nvram_major, "nvram");
goto err;
}
si_setosh(sih, osh);
}
printk("dev_nvram_init: _nvram_init\n");
/* Initialize hash table */
_nvram_init((void *)sih);
/* Create /dev/nvram handle */
nvram_class = class_create(THIS_MODULE, "nvram");
if (IS_ERR(nvram_class)) {
printk("Error creating nvram class\n");
goto err;
}
/* Add the device nvram0 */
class_device_create(nvram_class, NULL, MKDEV(nvram_major, 0), NULL, "nvram");
/* reserve commit read buffer */
/* Backup sector blocks to be erased */
if (!(nvram_commit_buf = kmalloc(ROUNDUP(nvram_space, nvram_mtd->erasesize), GFP_KERNEL))) {
printk("dev_nvram_init: nvram_commit_buf out of memory\n");
goto err;
}
/* Set the SDRAM NCDL value into NVRAM if not already done */
if (getintvar(NULL, "sdram_ncdl") == 0) {
unsigned int ncdl;
char buf[] = "0x00000000";
if ((ncdl = si_memc_get_ncdl(sih))) {
sprintf(buf, "0x%08x", ncdl);
nvram_set("sdram_ncdl", buf);
nvram_commit();
}
}
return 0;
err:
dev_nvram_exit();
return ret;
}
static int
dev_nvram_init(void)
{
int order = 0, ret = 0;
struct page *page, *end;
unsigned int i;
osl_t *osh;
/* Allocate and reserve memory to mmap() */
while ((PAGE_SIZE << order) < NVRAM_SPACE)
order++;
end = virt_to_page(nvram_buf + (PAGE_SIZE << order) - 1);
for (page = virt_to_page(nvram_buf); page <= end; page++) {
SetPageReserved(page);
}
#if defined(CONFIG_MTD) || defined(CONFIG_MTD_MODULE)
/* Find associated MTD device */
for (i = 0; i < MAX_MTD_DEVICES; i++) {
nvram_mtd = get_mtd_device(NULL, i);
if (!IS_ERR(nvram_mtd)) {
if (!strcmp(nvram_mtd->name, "nvram") &&
nvram_mtd->size >= NVRAM_SPACE) {
break;
}
put_mtd_device(nvram_mtd);
}
}
if (i >= MAX_MTD_DEVICES)
nvram_mtd = NULL;
#endif
#ifdef RTN66U_NVRAM_64K_SUPPORT
int ret32;
char *log_buf;
u_int32_t offset_t;
size_t log_len;
DECLARE_WAITQUEUE(wait, current);
wait_queue_head_t wait_q;
struct erase_info erase;
offset_t = 0x18000;
ret32 = nvram_mtd->read(nvram_mtd, offset_t, 4, &log_len, &log_buf);
if(log_buf==0xffffffff) {
/* Erase sector blocks */
init_waitqueue_head(&wait_q);
erase.mtd = nvram_mtd;
erase.addr = 0;
erase.len = nvram_mtd->erasesize;
erase.callback = erase_callback;
erase.priv = (u_long) &wait_q;
set_current_state(TASK_INTERRUPTIBLE);
add_wait_queue(&wait_q, &wait);
/* Unlock sector blocks */
if (nvram_mtd->unlock)
nvram_mtd->unlock(nvram_mtd, 0, nvram_mtd->erasesize);
if ((ret = nvram_mtd->erase(nvram_mtd, &erase))) {
set_current_state(TASK_RUNNING);
remove_wait_queue(&wait_q, &wait);
printk("nvram mtd erase error\n");
}
/* Wait for erase to finish */
schedule();
remove_wait_queue(&wait_q, &wait);
}
#endif
/* Initialize hash table lock */
spin_lock_init(&nvram_lock);
/* Initialize commit semaphore */
init_MUTEX(&nvram_sem);
/* Register char device */
if ((nvram_major = register_chrdev(0, "nvram", &dev_nvram_fops)) < 0) {
ret = nvram_major;
goto err;
}
if (si_osh(sih) == NULL) {
osh = osl_attach(NULL, SI_BUS, FALSE);
if (osh == NULL) {
printk("Error allocating osh\n");
unregister_chrdev(nvram_major, "nvram");
goto err;
}
si_setosh(sih, osh);
}
/* Initialize hash table */
_nvram_init(sih);
/* Create /dev/nvram handle */
nvram_class = class_create(THIS_MODULE, "nvram");
if (IS_ERR(nvram_class)) {
printk("Error creating nvram class\n");
goto err;
}
/* Add the device nvram0 */
class_device_create(nvram_class, NULL, MKDEV(nvram_major, 0), NULL, "nvram");
/* reserve commit read buffer */
/* Backup sector blocks to be erased */
if (!(nvram_commit_buf = kmalloc(ROUNDUP(NVRAM_SPACE, nvram_mtd->erasesize), GFP_KERNEL))) {
printk("dev_nvram_init: nvram_commit_buf out of memory\n");
goto err;
}
/* Set the SDRAM NCDL value into NVRAM if not already done */
if (getintvar(NULL, "sdram_ncdl") == 0) {
unsigned int ncdl;
char buf[] = "0x00000000";
if ((ncdl = si_memc_get_ncdl(sih))) {
sprintf(buf, "0x%08x", ncdl);
nvram_set("sdram_ncdl", buf);
nvram_commit();
}
}
return 0;
err:
dev_nvram_exit();
return ret;
}
static int __init
dev_nvram_init(void)
{
int order = 0, ret = 0;
struct page *page, *end;
unsigned int i;
/* Allocate and reserve memory to mmap() */
while ((PAGE_SIZE << order) < NVRAM_SPACE)
order++;
end = virt_to_page(nvram_buf + (PAGE_SIZE << order) - 1);
for (page = virt_to_page(nvram_buf); page <= end; page++)
mem_map_reserve(page);
#ifdef CONFIG_MTD
/* Find associated MTD device */
for (i = 0; i < MAX_MTD_DEVICES; i++) {
nvram_mtd = get_mtd_device(NULL, i);
if (nvram_mtd) {
if (!strcmp(nvram_mtd->name, "nvram") &&
nvram_mtd->size >= NVRAM_SPACE)
break;
put_mtd_device(nvram_mtd);
}
}
if (i >= MAX_MTD_DEVICES)
nvram_mtd = NULL;
#endif
/* Initialize hash table lock */
spin_lock_init(&nvram_lock);
/* Initialize commit semaphore */
init_MUTEX(&nvram_sem);
/* Register char device */
if ((nvram_major = devfs_register_chrdev(0, "nvram", &dev_nvram_fops)) < 0) {
ret = nvram_major;
goto err;
}
/* Initialize hash table */
_nvram_init(sbh);
/* Create /dev/nvram handle */
nvram_handle = devfs_register(NULL, "nvram", DEVFS_FL_NONE, nvram_major, 0,
S_IFCHR | S_IRUSR | S_IWUSR | S_IRGRP, &dev_nvram_fops, NULL);
/* Set the SDRAM NCDL value into NVRAM if not already done */
if (getintvar(NULL, "sdram_ncdl") == 0) {
unsigned int ncdl;
char buf[] = "0x00000000";
if ((ncdl = sb_memc_get_ncdl(sbh))) {
sprintf(buf, "0x%08x", ncdl);
nvram_set("sdram_ncdl", buf);
nvram_commit();
}
}
return 0;
err:
dev_nvram_exit();
return ret;
}
static int
dev_nvram_init(void)
{
int order = 0, ret = 0;
struct page *page, *end;
osl_t *osh;
#if defined(CONFIG_MTD) || defined(CONFIG_MTD_MODULE)
unsigned int i;
#endif
/* Allocate and reserve memory to mmap() */
while ((PAGE_SIZE << order) < nvram_space)
order++;
end = virt_to_page(nvram_buf + (PAGE_SIZE << order) - 1);
for (page = virt_to_page(nvram_buf); page <= end; page++) {
SetPageReserved(page);
}
#if defined(CONFIG_MTD) || defined(CONFIG_MTD_MODULE)
/* Find associated MTD device */
for (i = 0; i < MAX_MTD_DEVICES; i++) {
nvram_mtd = get_mtd_device(NULL, i);
if (!IS_ERR(nvram_mtd)) {
if (!strcmp(nvram_mtd->name, "nvram") &&
nvram_mtd->size >= nvram_space) {
break;
}
put_mtd_device(nvram_mtd);
}
}
if (i >= MAX_MTD_DEVICES)
nvram_mtd = NULL;
#endif
/* Initialize hash table lock */
spin_lock_init(&nvram_lock);
/* Initialize commit semaphore */
init_MUTEX(&nvram_sem);
/* Register char device */
if ((nvram_major = register_chrdev(0, "nvram", &dev_nvram_fops)) < 0) {
ret = nvram_major;
goto err;
}
if (si_osh(sih) == NULL) {
osh = osl_attach(NULL, SI_BUS, FALSE);
if (osh == NULL) {
printk("Error allocating osh\n");
unregister_chrdev(nvram_major, "nvram");
goto err;
}
si_setosh(sih, osh);
}
/* Initialize hash table */
_nvram_init(sih);
/* Create /dev/nvram handle */
nvram_class = class_create(THIS_MODULE, "nvram");
if (IS_ERR(nvram_class)) {
printk("Error creating nvram class\n");
goto err;
}
/* Add the device nvram0 */
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 36)
class_device_create(nvram_class, NULL, MKDEV(nvram_major, 0), NULL, "nvram");
#else /* Linux 2.6.36 and above */
device_create(nvram_class, NULL, MKDEV(nvram_major, 0), NULL, "nvram");
#endif /* Linux 2.6.36 */
return 0;
err:
dev_nvram_exit();
return ret;
}
