mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-14 07:13:03 +00:00
a1286a1fc4
Upstream linux commit c51d0ac59f2420. Move Samsung specific initialization and detection logic into nand_samsung.c. This is part of the "separate vendor specific code from core" cleanup process. Signed-off-by: Michael Trimarchi <michael@amarulasolutions.com> Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
90 lines
2.1 KiB
C
90 lines
2.1 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright (C) 2017 Free Electrons
|
|
* Copyright (C) 2017 NextThing Co
|
|
*
|
|
* Author: Boris Brezillon <boris.brezillon@free-electrons.com>
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#include <linux/bug.h>
|
|
#include <linux/mtd/rawnand.h>
|
|
|
|
static void samsung_nand_decode_id(struct nand_chip *chip)
|
|
{
|
|
struct mtd_info *mtd = nand_to_mtd(chip);
|
|
|
|
/* New Samsung (6 byte ID): Samsung K9GAG08U0F (p.44) */
|
|
if (chip->id.len == 6 && !nand_is_slc(chip) &&
|
|
chip->id.data[5] != 0x00) {
|
|
u8 extid = chip->id.data[3];
|
|
|
|
/* Get pagesize */
|
|
mtd->writesize = 2048 << (extid & 0x03);
|
|
|
|
extid >>= 2;
|
|
|
|
/* Get oobsize */
|
|
switch (((extid >> 2) & 0x4) | (extid & 0x3)) {
|
|
case 1:
|
|
mtd->oobsize = 128;
|
|
break;
|
|
case 2:
|
|
mtd->oobsize = 218;
|
|
break;
|
|
case 3:
|
|
mtd->oobsize = 400;
|
|
break;
|
|
case 4:
|
|
mtd->oobsize = 436;
|
|
break;
|
|
case 5:
|
|
mtd->oobsize = 512;
|
|
break;
|
|
case 6:
|
|
mtd->oobsize = 640;
|
|
break;
|
|
case 7:
|
|
default: /* Other cases are "reserved" (unknown) */
|
|
WARN(1, "Invalid OOB size value");
|
|
mtd->oobsize = 1024;
|
|
break;
|
|
}
|
|
|
|
/* Get blocksize */
|
|
extid >>= 2;
|
|
mtd->erasesize = (128 * 1024) <<
|
|
(((extid >> 1) & 0x04) | (extid & 0x03));
|
|
} else {
|
|
nand_decode_ext_id(chip);
|
|
}
|
|
}
|
|
|
|
static int samsung_nand_init(struct nand_chip *chip)
|
|
{
|
|
struct mtd_info *mtd = nand_to_mtd(chip);
|
|
|
|
if (mtd->writesize > 512)
|
|
chip->options |= NAND_SAMSUNG_LP_OPTIONS;
|
|
|
|
if (!nand_is_slc(chip))
|
|
chip->bbt_options |= NAND_BBT_SCANLASTPAGE;
|
|
else
|
|
chip->bbt_options |= NAND_BBT_SCAN2NDPAGE;
|
|
|
|
return 0;
|
|
}
|
|
|
|
const struct nand_manufacturer_ops samsung_nand_manuf_ops = {
|
|
.detect = samsung_nand_decode_id,
|
|
.init = samsung_nand_init,
|
|
};
|