/*
* Main initialization routine
*/
static int __init h1910_init (void)
{
struct nand_chip *this;
const char *part_type = 0;
int mtd_parts_nb = 0;
struct mtd_partition *mtd_parts = 0;
void __iomem *nandaddr;
if (!machine_is_h1900())
return -ENODEV;
nandaddr = (void __iomem *)__ioremap(0x08000000, 0x1000, 0, 1);
if (!nandaddr) {
printk("Failed to ioremap nand flash.\n");
return -ENOMEM;
}
/* Allocate memory for MTD device structure and private data */
h1910_nand_mtd = kmalloc(sizeof(struct mtd_info) +
sizeof(struct nand_chip),
GFP_KERNEL);
if (!h1910_nand_mtd) {
printk("Unable to allocate h1910 NAND MTD device structure.\n");
iounmap ((void *) nandaddr);
return -ENOMEM;
}
/* Get pointer to private data */
this = (struct nand_chip *) (&h1910_nand_mtd[1]);
/* Initialize structures */
memset((char *) h1910_nand_mtd, 0, sizeof(struct mtd_info));
memset((char *) this, 0, sizeof(struct nand_chip));
/* Link the private data with the MTD structure */
h1910_nand_mtd->priv = this;
/*
* Enable VPEN
*/
GPSR(37) = GPIO_bit(37);
/* insert callbacks */
this->IO_ADDR_R = nandaddr;
this->IO_ADDR_W = nandaddr;
this->hwcontrol = h1910_hwcontrol;
this->dev_ready = NULL; /* unknown whether that was correct or not so we will just do it like this */
/* 15 us command delay time */
this->chip_delay = 50;
this->eccmode = NAND_ECC_SOFT;
this->options = NAND_NO_AUTOINCR;
/* Scan to find existence of the device */
if (nand_scan (h1910_nand_mtd, 1)) {
printk(KERN_NOTICE "No NAND device - returning -ENXIO\n");
kfree (h1910_nand_mtd);
iounmap ((void *) nandaddr);
return -ENXIO;
}
#ifdef CONFIG_MTD_CMDLINE_PARTS
mtd_parts_nb = parse_cmdline_partitions(h1910_nand_mtd, &mtd_parts,
"h1910-nand");
if (mtd_parts_nb > 0)
part_type = "command line";
else
mtd_parts_nb = 0;
#endif
if (mtd_parts_nb == 0)
{
mtd_parts = partition_info;
mtd_parts_nb = NUM_PARTITIONS;
part_type = "static";
}
/* Register the partitions */
printk(KERN_NOTICE "Using %s partition definition\n", part_type);
add_mtd_partitions(h1910_nand_mtd, mtd_parts, mtd_parts_nb);
/* Return happy */
return 0;
}
/*
* Main initialization routine
*/
static int __init ep7312_init (void)
{
struct nand_chip *this;
const char *part_type = 0;
int mtd_parts_nb = 0;
struct mtd_partition *mtd_parts = 0;
int ep7312_fio_base;
/* Allocate memory for MTD device structure and private data */
ep7312_mtd = kmalloc(sizeof(struct mtd_info) +
sizeof(struct nand_chip),
GFP_KERNEL);
if (!ep7312_mtd) {
printk("Unable to allocate EDB7312 NAND MTD device structure.\n");
return -ENOMEM;
}
/* map physical adress */
ep7312_fio_base = (unsigned long)ioremap(ep7312_fio_pbase, SZ_1K);
if(!ep7312_fio_base) {
printk("ioremap EDB7312 NAND flash failed\n");
kfree(ep7312_mtd);
return -EIO;
}
/* Get pointer to private data */
this = (struct nand_chip *) (&ep7312_mtd[1]);
/* Initialize structures */
memset((char *) ep7312_mtd, 0, sizeof(struct mtd_info));
memset((char *) this, 0, sizeof(struct nand_chip));
/* Link the private data with the MTD structure */
ep7312_mtd->priv = this;
/*
* Set GPIO Port B control register so that the pins are configured
* to be outputs for controlling the NAND flash.
*/
clps_writeb(0xf0, ep7312_pxddr);
/* insert callbacks */
this->IO_ADDR_R = ep7312_fio_base;
this->IO_ADDR_W = ep7312_fio_base;
this->hwcontrol = ep7312_hwcontrol;
this->dev_ready = ep7312_device_ready;
/* 15 us command delay time */
this->chip_delay = 15;
/* Scan to find existence of the device */
if (nand_scan (ep7312_mtd)) {
iounmap((void *)ep7312_fio_base);
kfree (ep7312_mtd);
return -ENXIO;
}
/* Allocate memory for internal data buffer */
this->data_buf = kmalloc (sizeof(u_char) * (ep7312_mtd->oobblock + ep7312_mtd->oobsize), GFP_KERNEL);
if (!this->data_buf) {
printk("Unable to allocate NAND data buffer for EDB7312.\n");
iounmap((void *)ep7312_fio_base);
kfree (ep7312_mtd);
return -ENOMEM;
}
/* Allocate memory for internal data buffer */
this->data_cache = kmalloc (sizeof(u_char) * (ep7312_mtd->oobblock + ep7312_mtd->oobsize), GFP_KERNEL);
if (!this->data_cache) {
printk("Unable to allocate NAND data cache for EDB7312.\n");
kfree (this->data_buf);
iounmap((void *)ep7312_fio_base);
kfree (ep7312_mtd);
return -ENOMEM;
}
this->cache_page = -1;
#ifdef CONFIG_MTD_CMDLINE_PARTS
mtd_parts_nb = parse_cmdline_partitions(ep7312_mtd, &mtd_parts,
"edb7312-nand");
if (mtd_parts_nb > 0)
part_type = "command line";
else
mtd_parts_nb = 0;
#endif
if (mtd_parts_nb == 0)
{
mtd_parts = partition_info;
mtd_parts_nb = NUM_PARTITIONS;
part_type = "static";
}
/* Register the partitions */
printk(KERN_NOTICE "Using %s partition definition\n", part_type);
add_mtd_partitions(ep7312_mtd, mtd_parts, mtd_parts_nb);
/* Return happy */
return 0;
}
