2005-07-01 18:55:24 -04:00
|
|
|
/*
|
|
|
|
* $Id: $
|
|
|
|
*
|
|
|
|
* Map driver for the Mainstone developer platform.
|
|
|
|
*
|
|
|
|
* Author: Nicolas Pitre
|
|
|
|
* Copyright: (C) 2001 MontaVista Software Inc.
|
2005-11-07 06:15:40 -05:00
|
|
|
*
|
2005-07-01 18:55:24 -04:00
|
|
|
* 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/module.h>
|
|
|
|
#include <linux/types.h>
|
|
|
|
#include <linux/kernel.h>
|
|
|
|
#include <linux/init.h>
|
|
|
|
#include <linux/dma-mapping.h>
|
2005-10-30 18:03:48 -05:00
|
|
|
#include <linux/slab.h>
|
|
|
|
|
2005-07-01 18:55:24 -04:00
|
|
|
#include <linux/mtd/mtd.h>
|
|
|
|
#include <linux/mtd/map.h>
|
|
|
|
#include <linux/mtd/partitions.h>
|
2005-10-30 18:03:48 -05:00
|
|
|
|
2005-07-01 18:55:24 -04:00
|
|
|
#include <asm/io.h>
|
|
|
|
#include <asm/hardware.h>
|
|
|
|
#include <asm/arch/pxa-regs.h>
|
|
|
|
#include <asm/arch/mainstone.h>
|
|
|
|
|
|
|
|
|
|
|
|
#define ROM_ADDR 0x00000000
|
|
|
|
#define FLASH_ADDR 0x04000000
|
|
|
|
|
|
|
|
#define WINDOW_SIZE 0x04000000
|
|
|
|
|
|
|
|
static void mainstone_map_inval_cache(struct map_info *map, unsigned long from,
|
|
|
|
ssize_t len)
|
|
|
|
{
|
|
|
|
consistent_sync((char *)map->cached + from, len, DMA_FROM_DEVICE);
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct map_info mainstone_maps[2] = { {
|
|
|
|
.size = WINDOW_SIZE,
|
|
|
|
.phys = PXA_CS0_PHYS,
|
|
|
|
.inval_cache = mainstone_map_inval_cache,
|
|
|
|
}, {
|
|
|
|
.size = WINDOW_SIZE,
|
|
|
|
.phys = PXA_CS1_PHYS,
|
|
|
|
.inval_cache = mainstone_map_inval_cache,
|
|
|
|
} };
|
|
|
|
|
|
|
|
static struct mtd_partition mainstone_partitions[] = {
|
|
|
|
{
|
|
|
|
.name = "Bootloader",
|
|
|
|
.size = 0x00040000,
|
|
|
|
.offset = 0,
|
|
|
|
.mask_flags = MTD_WRITEABLE /* force read-only */
|
|
|
|
},{
|
|
|
|
.name = "Kernel",
|
|
|
|
.size = 0x00400000,
|
|
|
|
.offset = 0x00040000,
|
|
|
|
},{
|
|
|
|
.name = "Filesystem",
|
|
|
|
.size = MTDPART_SIZ_FULL,
|
|
|
|
.offset = 0x00440000
|
|
|
|
}
|
|
|
|
};
|
|
|
|
|
|
|
|
static struct mtd_info *mymtds[2];
|
|
|
|
static struct mtd_partition *parsed_parts[2];
|
|
|
|
static int nr_parsed_parts[2];
|
|
|
|
|
|
|
|
static const char *probes[] = { "RedBoot", "cmdlinepart", NULL };
|
|
|
|
|
|
|
|
static int __init init_mainstone(void)
|
|
|
|
{
|
|
|
|
int SW7 = 0; /* FIXME: get from SCR (Mst doc section 3.2.1.1) */
|
|
|
|
int ret = 0, i;
|
|
|
|
|
|
|
|
mainstone_maps[0].bankwidth = (BOOT_DEF & 1) ? 2 : 4;
|
|
|
|
mainstone_maps[1].bankwidth = 4;
|
|
|
|
|
|
|
|
/* Compensate for SW7 which swaps the flash banks */
|
|
|
|
mainstone_maps[SW7].name = "processor flash";
|
|
|
|
mainstone_maps[SW7 ^ 1].name = "main board flash";
|
|
|
|
|
|
|
|
printk(KERN_NOTICE "Mainstone configured to boot from %s\n",
|
|
|
|
mainstone_maps[0].name);
|
|
|
|
|
|
|
|
for (i = 0; i < 2; i++) {
|
|
|
|
mainstone_maps[i].virt = ioremap(mainstone_maps[i].phys,
|
|
|
|
WINDOW_SIZE);
|
|
|
|
if (!mainstone_maps[i].virt) {
|
2005-11-07 06:15:40 -05:00
|
|
|
printk(KERN_WARNING "Failed to ioremap %s\n",
|
2005-07-01 18:55:24 -04:00
|
|
|
mainstone_maps[i].name);
|
|
|
|
if (!ret)
|
|
|
|
ret = -ENOMEM;
|
|
|
|
continue;
|
|
|
|
}
|
2005-11-07 06:15:40 -05:00
|
|
|
mainstone_maps[i].cached =
|
2005-07-01 18:55:24 -04:00
|
|
|
ioremap_cached(mainstone_maps[i].phys, WINDOW_SIZE);
|
|
|
|
if (!mainstone_maps[i].cached)
|
|
|
|
printk(KERN_WARNING "Failed to ioremap cached %s\n",
|
|
|
|
mainstone_maps[i].name);
|
|
|
|
simple_map_init(&mainstone_maps[i]);
|
|
|
|
|
2005-11-07 06:15:40 -05:00
|
|
|
printk(KERN_NOTICE
|
2005-07-01 18:55:24 -04:00
|
|
|
"Probing %s at physical address 0x%08lx"
|
|
|
|
" (%d-bit bankwidth)\n",
|
2005-11-07 06:15:40 -05:00
|
|
|
mainstone_maps[i].name, mainstone_maps[i].phys,
|
2005-07-01 18:55:24 -04:00
|
|
|
mainstone_maps[i].bankwidth * 8);
|
|
|
|
|
|
|
|
mymtds[i] = do_map_probe("cfi_probe", &mainstone_maps[i]);
|
2005-11-07 06:15:40 -05:00
|
|
|
|
2005-07-01 18:55:24 -04:00
|
|
|
if (!mymtds[i]) {
|
|
|
|
iounmap((void *)mainstone_maps[i].virt);
|
|
|
|
if (mainstone_maps[i].cached)
|
|
|
|
iounmap(mainstone_maps[i].cached);
|
|
|
|
if (!ret)
|
|
|
|
ret = -EIO;
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
mymtds[i]->owner = THIS_MODULE;
|
|
|
|
|
|
|
|
ret = parse_mtd_partitions(mymtds[i], probes,
|
|
|
|
&parsed_parts[i], 0);
|
|
|
|
|
|
|
|
if (ret > 0)
|
|
|
|
nr_parsed_parts[i] = ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!mymtds[0] && !mymtds[1])
|
|
|
|
return ret;
|
2005-11-07 06:15:40 -05:00
|
|
|
|
2005-07-01 18:55:24 -04:00
|
|
|
for (i = 0; i < 2; i++) {
|
|
|
|
if (!mymtds[i]) {
|
2005-11-07 06:15:40 -05:00
|
|
|
printk(KERN_WARNING "%s is absent. Skipping\n",
|
2005-07-01 18:55:24 -04:00
|
|
|
mainstone_maps[i].name);
|
|
|
|
} else if (nr_parsed_parts[i]) {
|
2005-11-07 06:15:40 -05:00
|
|
|
add_mtd_partitions(mymtds[i], parsed_parts[i],
|
2005-07-01 18:55:24 -04:00
|
|
|
nr_parsed_parts[i]);
|
|
|
|
} else if (!i) {
|
|
|
|
printk("Using static partitions on %s\n",
|
|
|
|
mainstone_maps[i].name);
|
2005-11-07 06:15:40 -05:00
|
|
|
add_mtd_partitions(mymtds[i], mainstone_partitions,
|
2005-07-01 18:55:24 -04:00
|
|
|
ARRAY_SIZE(mainstone_partitions));
|
|
|
|
} else {
|
2005-11-07 06:15:40 -05:00
|
|
|
printk("Registering %s as whole device\n",
|
2005-07-01 18:55:24 -04:00
|
|
|
mainstone_maps[i].name);
|
|
|
|
add_mtd_device(mymtds[i]);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void __exit cleanup_mainstone(void)
|
|
|
|
{
|
|
|
|
int i;
|
|
|
|
for (i = 0; i < 2; i++) {
|
|
|
|
if (!mymtds[i])
|
|
|
|
continue;
|
|
|
|
|
|
|
|
if (nr_parsed_parts[i] || !i)
|
|
|
|
del_mtd_partitions(mymtds[i]);
|
|
|
|
else
|
|
|
|
del_mtd_device(mymtds[i]);
|
|
|
|
|
|
|
|
map_destroy(mymtds[i]);
|
|
|
|
iounmap((void *)mainstone_maps[i].virt);
|
|
|
|
if (mainstone_maps[i].cached)
|
|
|
|
iounmap(mainstone_maps[i].cached);
|
|
|
|
kfree(parsed_parts[i]);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
module_init(init_mainstone);
|
|
|
|
module_exit(cleanup_mainstone);
|
|
|
|
|
|
|
|
MODULE_LICENSE("GPL");
|
|
|
|
MODULE_AUTHOR("Nicolas Pitre <nico@cam.org>");
|
|
|
|
MODULE_DESCRIPTION("MTD map driver for Intel Mainstone");
|