* uclinux.c -- generic memory mapped MTD driver for uclinux
*
* (C) Copyright 2002, Greg Ungerer (gerg@snapgear.com)
- *
- * $Id: uclinux.c,v 1.10 2005/01/05 18:05:13 dwmw2 Exp $
*/
/****************************************************************************/
-#include <linux/config.h>
#include <linux/module.h>
#include <linux/types.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/fs.h>
+#include <linux/mm.h>
#include <linux/major.h>
-#include <linux/root_dev.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/map.h>
#include <linux/mtd/partitions.h>
/****************************************************************************/
-
-/****************************************************************************/
+extern char _ebss;
struct map_info uclinux_ram_map = {
.name = "RAM",
+ .phys = (unsigned long)&_ebss,
+ .size = 0,
};
-struct mtd_info *uclinux_ram_mtdinfo;
+static struct mtd_info *uclinux_ram_mtdinfo;
/****************************************************************************/
-struct mtd_partition uclinux_romfs[] = {
+static struct mtd_partition uclinux_romfs[] = {
{ .name = "ROMfs" }
};
-#define NUM_PARTITIONS (sizeof(uclinux_romfs) / sizeof(uclinux_romfs[0]))
+#define NUM_PARTITIONS ARRAY_SIZE(uclinux_romfs)
/****************************************************************************/
-int uclinux_point(struct mtd_info *mtd, loff_t from, size_t len,
- size_t *retlen, u_char **mtdbuf)
+static int uclinux_point(struct mtd_info *mtd, loff_t from, size_t len,
+ size_t *retlen, void **virt, resource_size_t *phys)
{
struct map_info *map = mtd->priv;
- *mtdbuf = (u_char *) (map->virt + ((int) from));
+ *virt = map->virt + from;
+ if (phys)
+ *phys = map->phys + from;
*retlen = len;
return(0);
}
/****************************************************************************/
-int __init uclinux_mtd_init(void)
+static int __init uclinux_mtd_init(void)
{
struct mtd_info *mtd;
struct map_info *mapp;
- extern char _ebss;
mapp = &uclinux_ram_map;
- mapp->phys = (unsigned long) &_ebss;
- mapp->size = PAGE_ALIGN(*((unsigned long *)((&_ebss) + 8)));
+ if (!mapp->size)
+ mapp->size = PAGE_ALIGN(ntohl(*((unsigned long *)(mapp->phys + 8))));
mapp->bankwidth = 4;
printk("uclinux[mtd]: RAM probe address=0x%x size=0x%x\n",
- (int) mapp->map_priv_2, (int) mapp->size);
+ (int) mapp->phys, (int) mapp->size);
mapp->virt = ioremap_nocache(mapp->phys, mapp->size);
iounmap(mapp->virt);
return(-ENXIO);
}
-
+
mtd->owner = THIS_MODULE;
mtd->point = uclinux_point;
mtd->priv = mapp;
uclinux_ram_mtdinfo = mtd;
+#ifdef CONFIG_MTD_PARTITIONS
add_mtd_partitions(mtd, uclinux_romfs, NUM_PARTITIONS);
-
- printk("uclinux[mtd]: set %s to be root filesystem\n",
- uclinux_romfs[0].name);
- ROOT_DEV = MKDEV(MTD_BLOCK_MAJOR, 0);
- put_mtd_device(mtd);
+#else
+ add_mtd_device(mtd);
+#endif
return(0);
}
/****************************************************************************/
-void __exit uclinux_mtd_cleanup(void)
+static void __exit uclinux_mtd_cleanup(void)
{
if (uclinux_ram_mtdinfo) {
+#ifdef CONFIG_MTD_PARTITIONS
del_mtd_partitions(uclinux_ram_mtdinfo);
+#else
+ del_mtd_device(uclinux_ram_mtdinfo);
+#endif
map_destroy(uclinux_ram_mtdinfo);
uclinux_ram_mtdinfo = NULL;
}
- if (uclinux_ram_map.map_priv_1) {
+ if (uclinux_ram_map.virt) {
iounmap((void *) uclinux_ram_map.virt);
uclinux_ram_map.virt = 0;
}