X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=drivers%2Fmtd%2Fcfi_mtd.c;h=a5bb0962e556937781013210da098aed43e19b8c;hb=51dce7d2bfdecd974412634e4a0758ac55edcc00;hp=c7e357b7f2a23fbea9b9af3ddda69ae57e3bd504;hpb=92afd368bba7d98b2b7bfb51082c3639bb2119b3;p=u-boot

diff --git a/drivers/mtd/cfi_mtd.c b/drivers/mtd/cfi_mtd.c
index c7e357b7f2..a5bb0962e5 100644
--- a/drivers/mtd/cfi_mtd.c
+++ b/drivers/mtd/cfi_mtd.c
@@ -1,40 +1,21 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * (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/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
@@ -154,8 +135,8 @@ static int cfi_mtd_set_erasesize(struct mtd_info *mtd, flash_info_t *fi)
 	int sect;
 	int regions = 0;
 	int numblocks = 0;
-	ulong offset = 0;
-	ulong base_addr = fi->start[0];
+	ulong offset;
+	ulong base_addr;
 
 	/*
 	 * First detect the number of eraseregions so that we can allocate
@@ -167,29 +148,35 @@ static int cfi_mtd_set_erasesize(struct mtd_info *mtd, flash_info_t *fi)
 		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);
 
 	/*
 	 * Now detect the largest sector and fill the eraseregions
 	 */
-	sect_size_old = 0;
 	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)) &&
-		    (sect_size_old != 0)) {
+		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++;
-		} else {
-			numblocks++;
-		}
-
-		if (sect_size_old != flash_sector_size(fi, sect))
 			offset = fi->start[sect];
+		}
+		numblocks++;
 
 		/*
 		 * Select the largest sector size as erasesize (e.g. for UBI)
@@ -205,12 +192,7 @@ static int cfi_mtd_set_erasesize(struct mtd_info *mtd, flash_info_t *fi)
 	 */
 	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->eraseregions[regions].numblocks = numblocks;
 
 	mtd->erasesize = sect_size;
 
@@ -222,8 +204,10 @@ int cfi_mtd_init(void)
 	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];
@@ -241,19 +225,22 @@ int cfi_mtd_init(void)
 		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->writebufsize	= mtd->writesize;
+
+		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