8d2effea23
This patch brings the U-Boot MTD infrastructure in sync with the current Linux MTD version (2.6.30-rc3). Biggest change is the 64bit device size support and a resync of the mtdpart.c file which has seen multiple fixes meanwhile. Signed-off-by: Stefan Roese <sr@denx.de> Cc: Scott Wood <scottwood@freescale.com> Cc: Kyungmin Park <kmpark@infradead.org>
277 lines
6.2 KiB
C
277 lines
6.2 KiB
C
/*
|
|
* (C) Copyright 2008 Semihalf
|
|
*
|
|
* Written by: Piotr Ziecik <kosmo@semihalf.com>
|
|
*
|
|
* See file CREDITS for list of people who contributed to this
|
|
* project.
|
|
*
|
|
* 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 program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* 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., 59 Temple Place, Suite 330, Boston,
|
|
* MA 02111-1307 USA
|
|
*
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <flash.h>
|
|
#include <malloc.h>
|
|
|
|
#include <asm/errno.h>
|
|
#include <linux/mtd/mtd.h>
|
|
#include <linux/mtd/concat.h>
|
|
|
|
extern flash_info_t flash_info[];
|
|
|
|
static struct mtd_info cfi_mtd_info[CONFIG_SYS_MAX_FLASH_BANKS];
|
|
static char cfi_mtd_names[CONFIG_SYS_MAX_FLASH_BANKS][16];
|
|
#ifdef CONFIG_MTD_CONCAT
|
|
static char c_mtd_name[16];
|
|
#endif
|
|
|
|
static int cfi_mtd_erase(struct mtd_info *mtd, struct erase_info *instr)
|
|
{
|
|
flash_info_t *fi = mtd->priv;
|
|
size_t a_start = fi->start[0] + instr->addr;
|
|
size_t a_end = a_start + instr->len;
|
|
int s_first = -1;
|
|
int s_last = -1;
|
|
int error, sect;
|
|
|
|
for (sect = 0; sect < fi->sector_count; sect++) {
|
|
if (a_start == fi->start[sect])
|
|
s_first = sect;
|
|
|
|
if (sect < fi->sector_count - 1) {
|
|
if (a_end == fi->start[sect + 1]) {
|
|
s_last = sect;
|
|
break;
|
|
}
|
|
} else {
|
|
s_last = sect;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (s_first >= 0 && s_first <= s_last) {
|
|
instr->state = MTD_ERASING;
|
|
|
|
flash_set_verbose(0);
|
|
error = flash_erase(fi, s_first, s_last);
|
|
flash_set_verbose(1);
|
|
|
|
if (error) {
|
|
instr->state = MTD_ERASE_FAILED;
|
|
return -EIO;
|
|
}
|
|
|
|
instr->state = MTD_ERASE_DONE;
|
|
mtd_erase_callback(instr);
|
|
return 0;
|
|
}
|
|
|
|
return -EINVAL;
|
|
}
|
|
|
|
static int cfi_mtd_read(struct mtd_info *mtd, loff_t from, size_t len,
|
|
size_t *retlen, u_char *buf)
|
|
{
|
|
flash_info_t *fi = mtd->priv;
|
|
u_char *f = (u_char*)(fi->start[0]) + from;
|
|
|
|
memcpy(buf, f, len);
|
|
*retlen = len;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int cfi_mtd_write(struct mtd_info *mtd, loff_t to, size_t len,
|
|
size_t *retlen, const u_char *buf)
|
|
{
|
|
flash_info_t *fi = mtd->priv;
|
|
u_long t = fi->start[0] + to;
|
|
int error;
|
|
|
|
flash_set_verbose(0);
|
|
error = write_buff(fi, (u_char*)buf, t, len);
|
|
flash_set_verbose(1);
|
|
|
|
if (!error) {
|
|
*retlen = len;
|
|
return 0;
|
|
}
|
|
|
|
return -EIO;
|
|
}
|
|
|
|
static void cfi_mtd_sync(struct mtd_info *mtd)
|
|
{
|
|
/*
|
|
* This function should wait until all pending operations
|
|
* finish. However this driver is fully synchronous, so
|
|
* this function returns immediately
|
|
*/
|
|
}
|
|
|
|
static int cfi_mtd_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
|
|
{
|
|
flash_info_t *fi = mtd->priv;
|
|
|
|
flash_set_verbose(0);
|
|
flash_protect(FLAG_PROTECT_SET, fi->start[0] + ofs,
|
|
fi->start[0] + ofs + len - 1, fi);
|
|
flash_set_verbose(1);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int cfi_mtd_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
|
|
{
|
|
flash_info_t *fi = mtd->priv;
|
|
|
|
flash_set_verbose(0);
|
|
flash_protect(FLAG_PROTECT_CLEAR, fi->start[0] + ofs,
|
|
fi->start[0] + ofs + len - 1, fi);
|
|
flash_set_verbose(1);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int cfi_mtd_set_erasesize(struct mtd_info *mtd, flash_info_t *fi)
|
|
{
|
|
int sect_size = 0;
|
|
int sect_size_old = 0;
|
|
int sect;
|
|
int regions = 0;
|
|
int numblocks = 0;
|
|
ulong offset = 0;
|
|
ulong base_addr = fi->start[0];
|
|
|
|
/*
|
|
* First detect the number of eraseregions so that we can allocate
|
|
* the array of eraseregions correctly
|
|
*/
|
|
for (sect = 0; sect < fi->sector_count; sect++) {
|
|
if (sect_size_old != flash_sector_size(fi, sect))
|
|
regions++;
|
|
sect_size_old = flash_sector_size(fi, sect);
|
|
}
|
|
|
|
mtd->eraseregions = malloc(sizeof(struct mtd_erase_region_info) * regions);
|
|
|
|
/*
|
|
* Now detect the largest sector and fill the eraseregions
|
|
*/
|
|
sect_size_old = 0;
|
|
regions = 0;
|
|
for (sect = 0; sect < fi->sector_count; sect++) {
|
|
if ((sect_size_old != flash_sector_size(fi, sect)) &&
|
|
(sect_size_old != 0)) {
|
|
mtd->eraseregions[regions].offset = offset - base_addr;
|
|
mtd->eraseregions[regions].erasesize = sect_size_old;
|
|
mtd->eraseregions[regions].numblocks = numblocks;
|
|
|
|
/* Now start counting the next eraseregions */
|
|
numblocks = 0;
|
|
regions++;
|
|
} else {
|
|
numblocks++;
|
|
}
|
|
|
|
if (sect_size_old != flash_sector_size(fi, sect))
|
|
offset = fi->start[sect];
|
|
|
|
/*
|
|
* Select the largest sector size as erasesize (e.g. for UBI)
|
|
*/
|
|
if (flash_sector_size(fi, sect) > sect_size)
|
|
sect_size = flash_sector_size(fi, sect);
|
|
|
|
sect_size_old = flash_sector_size(fi, sect);
|
|
}
|
|
|
|
/*
|
|
* Set the last region
|
|
*/
|
|
mtd->eraseregions[regions].offset = offset - base_addr;
|
|
mtd->eraseregions[regions].erasesize = sect_size_old;
|
|
mtd->eraseregions[regions].numblocks = numblocks + 1;
|
|
|
|
if (regions)
|
|
mtd->numeraseregions = regions + 1;
|
|
else
|
|
mtd->numeraseregions = 0;
|
|
|
|
mtd->erasesize = sect_size;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int cfi_mtd_init(void)
|
|
{
|
|
struct mtd_info *mtd;
|
|
flash_info_t *fi;
|
|
int error, i;
|
|
int devices_found = 0;
|
|
struct mtd_info *mtd_list[CONFIG_SYS_MAX_FLASH_BANKS];
|
|
|
|
for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; i++) {
|
|
fi = &flash_info[i];
|
|
mtd = &cfi_mtd_info[i];
|
|
|
|
memset(mtd, 0, sizeof(struct mtd_info));
|
|
|
|
error = cfi_mtd_set_erasesize(mtd, fi);
|
|
if (error)
|
|
continue;
|
|
|
|
sprintf(cfi_mtd_names[i], "nor%d", i);
|
|
mtd->name = cfi_mtd_names[i];
|
|
mtd->type = MTD_NORFLASH;
|
|
mtd->flags = MTD_CAP_NORFLASH;
|
|
mtd->size = fi->size;
|
|
mtd->writesize = 1;
|
|
|
|
mtd->erase = cfi_mtd_erase;
|
|
mtd->read = cfi_mtd_read;
|
|
mtd->write = cfi_mtd_write;
|
|
mtd->sync = cfi_mtd_sync;
|
|
mtd->lock = cfi_mtd_lock;
|
|
mtd->unlock = cfi_mtd_unlock;
|
|
mtd->priv = fi;
|
|
|
|
if (add_mtd_device(mtd))
|
|
return -ENOMEM;
|
|
|
|
mtd_list[devices_found++] = mtd;
|
|
}
|
|
|
|
#ifdef CONFIG_MTD_CONCAT
|
|
if (devices_found > 1) {
|
|
/*
|
|
* We detected multiple devices. Concatenate them together.
|
|
*/
|
|
sprintf(c_mtd_name, "nor%d", devices_found);
|
|
mtd = mtd_concat_create(mtd_list, devices_found, c_mtd_name);
|
|
|
|
if (mtd == NULL)
|
|
return -ENXIO;
|
|
|
|
if (add_mtd_device(mtd))
|
|
return -ENOMEM;
|
|
}
|
|
#endif /* CONFIG_MTD_CONCAT */
|
|
|
|
return 0;
|
|
}
|