[xtensa-cvscommit] linux/drivers/mtd/maps xtensa_xt2000.c,NONE,1.1 Config.in,1.1.1.1,1.2 Makefile,1.
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[xtensa-cvscommit] linux/drivers/mtd/maps xtensa_xt2000.c,NONE,1.1 Config.in,1.1.1.1,1.2 Makefile,1.1.1.1,1.2
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From: <ahe...@us...> - 2003-03-28 00:29:44
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Update of /cvsroot/xtensa/linux/drivers/mtd/maps
In directory sc8-pr-cvs1:/tmp/cvs-serv32434/drivers/mtd/maps
Modified Files:
Config.in Makefile
Added Files:
xtensa_xt2000.c
Log Message:
Added new mapping file for xtensa xt2000 board.
--- NEW FILE: xtensa_xt2000.c ---
/*
* $Id: xtensa_xt2000.c,v 1.1 2003/03/28 00:29:41 ahennessy Exp $
*
* Mapping of the Tensilica XT2000 board with Intel Strata flashes.
*
* Based on cstm_mips_ixx.c
*
* Copyright 2003 MontaVista Software Inc.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
* NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <linux/module.h>
#include <linux/types.h>
#include <linux/kernel.h>
#include <asm/io.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/map.h>
#include <linux/mtd/partitions.h>
#include <linux/config.h>
#include <xtensa/xt2000.h>
#define WINDOW_ADDR XTBOARD_FLASH_VADDR
#define WINDOW_SIZE 0x2000000
#define WINDOW_BUSWIDTH 4
extern int parse_redboot_partitions(struct mtd_info *master, struct mtd_partition **pparts);
__u8 xtensa_xt2000_read8(struct map_info *map, unsigned long ofs)
{
return *(__u8 *)(map->map_priv_1 + ofs);
}
__u16 xtensa_xt2000_read16(struct map_info *map, unsigned long ofs)
{
return *(__u16 *)(map->map_priv_1 + ofs);
}
__u32 xtensa_xt2000_read32(struct map_info *map, unsigned long ofs)
{
return *(__u32 *)(map->map_priv_1 + ofs);
}
void xtensa_xt2000_copy_from(struct map_info *map, void *to, unsigned long from, ssize_t len)
{
memcpy_fromio(to, map->map_priv_1 + from, len);
}
void xtensa_xt2000_write8(struct map_info *map, __u8 d, unsigned long adr)
{
*(__u8 *)(map->map_priv_1 + adr) = d;
}
void xtensa_xt2000_write16(struct map_info *map, __u16 d, unsigned long adr)
{
*(__u16 *)(map->map_priv_1 + adr) = d;
}
void xtensa_xt2000_write32(struct map_info *map, __u32 d, unsigned long adr)
{
*(__u32 *)(map->map_priv_1 + adr) = d;
}
void xtensa_xt2000_copy_to(struct map_info *map, unsigned long to, const void *from, ssize_t len)
{
memcpy_toio(map->map_priv_1 + to, from, len);
}
const struct map_info basic_xtensa_xt2000_map = {
name: NULL,
size: 0,
buswidth: 0,
read8: xtensa_xt2000_read8,
read16: xtensa_xt2000_read16,
read32: xtensa_xt2000_read32,
copy_from: xtensa_xt2000_copy_from,
write8: xtensa_xt2000_write8,
write16: xtensa_xt2000_write16,
write32: xtensa_xt2000_write32,
copy_to: xtensa_xt2000_copy_to,
map_priv_1: 0,
map_priv_2: 0
};
/* board and partition description */
#define MAX_PHYSMAP_PARTITIONS 8
struct xtensa_xt2000_info {
char *name;
unsigned long window_addr;
unsigned long window_size;
int buswidth;
int num_partitions;
};
#define PHYSMAP_NUMBER 1 // number of board desc structs needed, one per contiguous flash type
const struct xtensa_xt2000_info xtensa_xt2000_board_desc[PHYSMAP_NUMBER] =
{
{
"MTD flash", // name
WINDOW_ADDR, // window_addr
WINDOW_SIZE, // window_size
WINDOW_BUSWIDTH, // buswidth
1, // num_partitions
},
};
static struct mtd_partition xtensa_xt2000_partitions[PHYSMAP_NUMBER][MAX_PHYSMAP_PARTITIONS] = {
{
{
name: "User FS",
size: WINDOW_SIZE,
offset: 0,
},
},
};
struct map_info xtensa_xt2000_map[PHYSMAP_NUMBER];
int __init init_xtensa_xt2000(void)
{
int i;
struct mtd_info *mymtd;
struct mtd_partition *parts;
#ifdef CONFIG_MTD_REDBOOT_PARTS
int nr_parts = 0;
#endif
/* Initialize mapping */
for (i=0;i<PHYSMAP_NUMBER;i++) {
printk(KERN_NOTICE "xtensa_xt2000 flash device: %lx at %lx\n", xtensa_xt2000_board_desc[i].window_size, xtensa_xt2000_board_desc[i].window_addr);
memcpy((char *)&xtensa_xt2000_map[i],(char *)&basic_xtensa_xt2000_map,sizeof(struct map_info));
xtensa_xt2000_map[i].map_priv_1 = (unsigned long)ioremap_nocache(xtensa_xt2000_board_desc[i].window_addr, xtensa_xt2000_board_desc[i].window_size);
if (!xtensa_xt2000_map[i].map_priv_1) {
printk(KERN_WARNING "Failed to ioremap\n");
return -EIO;
}
xtensa_xt2000_map[i].name = xtensa_xt2000_board_desc[i].name;
xtensa_xt2000_map[i].size = xtensa_xt2000_board_desc[i].window_size;
xtensa_xt2000_map[i].buswidth = xtensa_xt2000_board_desc[i].buswidth;
//printk(KERN_NOTICE "xtensa_xt2000: ioremap is %x\n",(unsigned int)(xtensa_xt2000_map[i].map_priv_1));
}
for (i=0;i<PHYSMAP_NUMBER;i++) {
parts = &xtensa_xt2000_partitions[i][0];
mymtd = (struct mtd_info *)do_map_probe("cfi_probe", &xtensa_xt2000_map[i]);
if (mymtd) {
mymtd->module = THIS_MODULE;
xtensa_xt2000_map[i].map_priv_2 = (unsigned long)mymtd;
#ifdef CONFIG_MTD_REDBOOT_PARTS
nr_parts = parse_redboot_partitions(mymtd, &parts);
if (nr_parts > 0) {
printk(KERN_NOTICE "Found RedBoot partition table.\n");
add_mtd_partitions(mymtd, parts, nr_parts);
}
else if (nr_parts < 0)
printk(KERN_NOTICE "Error looking for RedBoot partitions.\n");
#else /* CONFIG_MTD_REDBOOT_PARTS */
add_mtd_partitions(mymtd, parts, xtensa_xt2000_board_desc[i].num_partitions);
#endif /* CONFIG_MTD_REDBOOT_PARTS */
}
else
return -ENXIO;
}
return 0;
}
static void __exit cleanup_xtensa_xt2000(void)
{
int i;
struct mtd_info *mymtd;
for (i=0;i<PHYSMAP_NUMBER;i++) {
mymtd = (struct mtd_info *)xtensa_xt2000_map[i].map_priv_2;
if (mymtd) {
del_mtd_partitions(mymtd);
map_destroy(mymtd);
}
if (xtensa_xt2000_map[i].map_priv_1) {
iounmap((void *)xtensa_xt2000_map[i].map_priv_1);
xtensa_xt2000_map[i].map_priv_1 = 0;
}
}
}
module_init(init_xtensa_xt2000);
module_exit(cleanup_xtensa_xt2000);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Alice Hennessy <ahe...@mv...>");
MODULE_DESCRIPTION("MTD map driver for Tensilica XT2000 boards");
Index: Config.in
===================================================================
RCS file: /cvsroot/xtensa/linux/drivers/mtd/maps/Config.in,v
retrieving revision 1.1.1.1
retrieving revision 1.2
diff -C2 -d -r1.1.1.1 -r1.2
*** Config.in 28 Aug 2002 16:10:40 -0000 1.1.1.1
--- Config.in 28 Mar 2003 00:29:41 -0000 1.2
***************
*** 60,62 ****
--- 60,66 ----
fi
+ if [ "$CONFIG_XTENSA" = "y" ]; then
+ dep_tristate ' Tensilica XT2000 flash support' CONFIG_MTD_XT2000 $CONFIG_MTD_CFI $CONFIG_MTD_PARTITIONS
+ fi
+
endmenu
Index: Makefile
===================================================================
RCS file: /cvsroot/xtensa/linux/drivers/mtd/maps/Makefile,v
retrieving revision 1.1.1.1
retrieving revision 1.2
diff -C2 -d -r1.1.1.1 -r1.2
*** Makefile 28 Aug 2002 16:10:40 -0000 1.1.1.1
--- Makefile 28 Mar 2003 00:29:41 -0000 1.2
***************
*** 30,33 ****
--- 30,34 ----
obj-$(CONFIG_MTD_OCELOT) += ocelot.o
obj-$(CONFIG_MTD_SOLUTIONENGINE)+= solutionengine.o
+ obj-$(CONFIG_MTD_XT2000) += xtensa_xt2000.o
include $(TOPDIR)/Rules.make
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