forked from Minki/linux
1c5402ba55
Adjust the NDFC resource end value (resource size = end - start + 1). Signed-off-by: Valentine Barshak <vbarshak@ru.mvista.com> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
136 lines
2.8 KiB
C
136 lines
2.8 KiB
C
/*
|
|
* PIKA Warp(tm) NAND flash specific routines
|
|
*
|
|
* Copyright (c) 2008 PIKA Technologies
|
|
* Sean MacLennan <smaclennan@pikatech.com>
|
|
*/
|
|
|
|
#include <linux/platform_device.h>
|
|
#include <linux/mtd/mtd.h>
|
|
#include <linux/mtd/map.h>
|
|
#include <linux/mtd/partitions.h>
|
|
#include <linux/mtd/nand.h>
|
|
#include <linux/mtd/ndfc.h>
|
|
#include <linux/of.h>
|
|
#include <asm/machdep.h>
|
|
|
|
|
|
#ifdef CONFIG_MTD_NAND_NDFC
|
|
|
|
#define CS_NAND_0 1 /* use chip select 1 for NAND device 0 */
|
|
|
|
#define WARP_NAND_FLASH_REG_ADDR 0xD0000000UL
|
|
#define WARP_NAND_FLASH_REG_SIZE 0x2000
|
|
|
|
static struct resource warp_ndfc = {
|
|
.start = WARP_NAND_FLASH_REG_ADDR,
|
|
.end = WARP_NAND_FLASH_REG_ADDR + WARP_NAND_FLASH_REG_SIZE - 1,
|
|
.flags = IORESOURCE_MEM,
|
|
};
|
|
|
|
static struct mtd_partition nand_parts[] = {
|
|
{
|
|
.name = "kernel",
|
|
.offset = 0,
|
|
.size = 0x0200000
|
|
},
|
|
{
|
|
.name = "root",
|
|
.offset = 0x0200000,
|
|
.size = 0x3E00000
|
|
},
|
|
{
|
|
.name = "persistent",
|
|
.offset = 0x4000000,
|
|
.size = 0x4000000
|
|
},
|
|
{
|
|
.name = "persistent1",
|
|
.offset = 0x8000000,
|
|
.size = 0x4000000
|
|
},
|
|
{
|
|
.name = "persistent2",
|
|
.offset = 0xC000000,
|
|
.size = 0x4000000
|
|
}
|
|
};
|
|
|
|
struct ndfc_controller_settings warp_ndfc_settings = {
|
|
.ccr_settings = (NDFC_CCR_BS(CS_NAND_0) | NDFC_CCR_ARAC1),
|
|
.ndfc_erpn = 0,
|
|
};
|
|
|
|
static struct ndfc_chip_settings warp_chip0_settings = {
|
|
.bank_settings = 0x80002222,
|
|
};
|
|
|
|
struct platform_nand_ctrl warp_nand_ctrl = {
|
|
.priv = &warp_ndfc_settings,
|
|
};
|
|
|
|
static struct platform_device warp_ndfc_device = {
|
|
.name = "ndfc-nand",
|
|
.id = 0,
|
|
.dev = {
|
|
.platform_data = &warp_nand_ctrl,
|
|
},
|
|
.num_resources = 1,
|
|
.resource = &warp_ndfc,
|
|
};
|
|
|
|
/* Do NOT set the ecclayout: let it default so it is correct for both
|
|
* 64M and 256M flash chips.
|
|
*/
|
|
static struct platform_nand_chip warp_nand_chip0 = {
|
|
.nr_chips = 1,
|
|
.chip_offset = CS_NAND_0,
|
|
.nr_partitions = ARRAY_SIZE(nand_parts),
|
|
.partitions = nand_parts,
|
|
.chip_delay = 20,
|
|
.priv = &warp_chip0_settings,
|
|
};
|
|
|
|
static struct platform_device warp_nand_device = {
|
|
.name = "ndfc-chip",
|
|
.id = 0,
|
|
.num_resources = 0,
|
|
.dev = {
|
|
.platform_data = &warp_nand_chip0,
|
|
.parent = &warp_ndfc_device.dev,
|
|
}
|
|
};
|
|
|
|
static int warp_setup_nand_flash(void)
|
|
{
|
|
struct device_node *np;
|
|
|
|
/* Try to detect a rev A based on NOR size. */
|
|
np = of_find_compatible_node(NULL, NULL, "cfi-flash");
|
|
if (np) {
|
|
struct property *pp;
|
|
|
|
pp = of_find_property(np, "reg", NULL);
|
|
if (pp && (pp->length == 12)) {
|
|
u32 *v = pp->value;
|
|
if (v[2] == 0x4000000) {
|
|
/* Rev A = 64M NAND */
|
|
warp_nand_chip0.nr_partitions = 3;
|
|
|
|
nand_parts[1].size = 0x3000000;
|
|
nand_parts[2].offset = 0x3200000;
|
|
nand_parts[2].size = 0x0e00000;
|
|
}
|
|
}
|
|
of_node_put(np);
|
|
}
|
|
|
|
platform_device_register(&warp_ndfc_device);
|
|
platform_device_register(&warp_nand_device);
|
|
|
|
return 0;
|
|
}
|
|
machine_device_initcall(warp, warp_setup_nand_flash);
|
|
|
|
#endif
|