96 lines
2 KiB
C
96 lines
2 KiB
C
|
/*
|
||
|
|
* ATSTK1000 board-specific flash initialization
|
||
|
|
*
|
||
|
|
* Copyright (C) 2005-2006 Atmel Corporation
|
||
|
|
*
|
||
|
|
* This program is free software; you can redistribute it and/or modify
|
||
|
|
* it under the terms of the GNU General Public License version 2 as
|
||
|
|
* published by the Free Software Foundation.
|
||
|
|
*/
|
||
|
|
#include <linux/init.h>
|
||
|
|
#include <linux/platform_device.h>
|
||
|
|
#include <linux/mtd/mtd.h>
|
||
|
|
#include <linux/mtd/partitions.h>
|
||
|
|
#include <linux/mtd/physmap.h>
|
||
|
|
|
||
|
|
#include <asm/arch/smc.h>
|
||
|
|
|
||
|
|
static struct smc_config flash_config __initdata = {
|
||
|
|
.ncs_read_setup = 0,
|
||
|
|
.nrd_setup = 40,
|
||
|
|
.ncs_write_setup = 0,
|
||
|
|
.nwe_setup = 10,
|
||
|
|
|
||
|
|
.ncs_read_pulse = 80,
|
||
|
|
.nrd_pulse = 40,
|
||
|
|
.ncs_write_pulse = 65,
|
||
|
|
.nwe_pulse = 55,
|
||
|
|
|
||
|
|
.read_cycle = 120,
|
||
|
|
.write_cycle = 120,
|
||
|
|
|
||
|
|
.bus_width = 2,
|
||
|
|
.nrd_controlled = 1,
|
||
|
|
.nwe_controlled = 1,
|
||
|
|
.byte_write = 1,
|
||
|
|
};
|
||
|
|
|
||
|
|
static struct mtd_partition flash_parts[] = {
|
||
|
|
{
|
||
|
|
.name = "u-boot",
|
||
|
|
.offset = 0x00000000,
|
||
|
|
.size = 0x00020000, /* 128 KiB */
|
||
|
|
.mask_flags = MTD_WRITEABLE,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
.name = "root",
|
||
|
|
.offset = 0x00020000,
|
||
|
|
.size = 0x007d0000,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
.name = "env",
|
||
|
|
.offset = 0x007f0000,
|
||
|
|
.size = 0x00010000,
|
||
|
|
.mask_flags = MTD_WRITEABLE,
|
||
|
|
},
|
||
|
|
};
|
||
|
|
|
||
|
|
static struct physmap_flash_data flash_data = {
|
||
|
|
.width = 2,
|
||
|
|
.nr_parts = ARRAY_SIZE(flash_parts),
|
||
|
|
.parts = flash_parts,
|
||
|
|
};
|
||
|
|
|
||
|
|
static struct resource flash_resource = {
|
||
|
|
.start = 0x00000000,
|
||
|
|
.end = 0x007fffff,
|
||
|
|
.flags = IORESOURCE_MEM,
|
||
|
|
};
|
||
|
|
|
||
|
|
static struct platform_device flash_device = {
|
||
|
|
.name = "physmap-flash",
|
||
|
|
.id = 0,
|
||
|
|
.resource = &flash_resource,
|
||
|
|
.num_resources = 1,
|
||
|
|
.dev = {
|
||
|
|
.platform_data = &flash_data,
|
||
|
|
},
|
||
|
|
};
|
||
|
|
|
||
|
|
/* This needs to be called after the SMC has been initialized */
|
||
|
|
static int __init atstk1000_flash_init(void)
|
||
|
|
{
|
||
|
|
int ret;
|
||
|
|
|
||
|
|
ret = smc_set_configuration(0, &flash_config);
|
||
|
|
if (ret < 0) {
|
||
|
|
printk(KERN_ERR "atstk1000: failed to set NOR flash timing\n");
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
platform_device_register(&flash_device);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
device_initcall(atstk1000_flash_init);
|