*
* 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
- *
+ * SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <flash.h>
+#include <malloc.h>
#include <asm/errno.h>
#include <linux/mtd/mtd.h>
+#include <linux/mtd/concat.h>
+#include <mtd/cfi_flash.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];
+static struct mtd_info cfi_mtd_info[CFI_MAX_FLASH_BANKS];
+static char cfi_mtd_names[CFI_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)
{
*/
}
-static int cfi_mtd_lock(struct mtd_info *mtd, loff_t ofs, size_t len)
+static int cfi_mtd_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
{
flash_info_t *fi = mtd->priv;
return 0;
}
-static int cfi_mtd_unlock(struct mtd_info *mtd, loff_t ofs, size_t len)
+static int cfi_mtd_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
{
flash_info_t *fi = mtd->priv;
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;
+ ulong base_addr;
+
+ /*
+ * 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);
+ }
+
+ switch (regions) {
+ case 0:
+ return 1;
+ case 1: /* flash has uniform erase size */
+ mtd->numeraseregions = 0;
+ mtd->erasesize = sect_size_old;
+ return 0;
+ }
+
+ mtd->numeraseregions = regions;
+ mtd->eraseregions = malloc(sizeof(struct mtd_erase_region_info) * regions);
/*
- * Select the largest sector size as erasesize (e.g. for UBI)
+ * Now detect the largest sector and fill the eraseregions
*/
+ regions = 0;
+ base_addr = offset = fi->start[0];
+ sect_size_old = flash_sector_size(fi, 0);
for (sect = 0; sect < fi->sector_count; sect++) {
+ if (sect_size_old != flash_sector_size(fi, sect)) {
+ 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++;
+ offset = fi->start[sect];
+ }
+ numblocks++;
+
+ /*
+ * 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;
+
mtd->erasesize = sect_size;
return 0;
struct mtd_info *mtd;
flash_info_t *fi;
int error, i;
+#ifdef CONFIG_MTD_CONCAT
+ int devices_found = 0;
+ struct mtd_info *mtd_list[CONFIG_SYS_MAX_FLASH_BANKS];
+#endif
for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; i++) {
fi = &flash_info[i];
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->_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;
+
+#ifdef CONFIG_MTD_CONCAT
+ mtd_list[devices_found++] = mtd;
+#endif
+ }
+
+#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;
}
projects / karo-tx-uboot.git / blobdiff