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authorH. Nikolaus Schaller <hns@goldelico.com>2012-03-26 20:55:28 +0200
committerH. Nikolaus Schaller <hns@goldelico.com>2012-03-26 20:55:28 +0200
commit92988a21ad4c4c9504295ccb580c9f806134471b (patch)
tree5effc9f14170112450de05c67dafbe8d5034d595 /drivers/mtd/nand/s3c2410_nand.c
parentca2b506783b676c95762c54ea24dcfdaae1947c9 (diff)
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added boot script files to repository
Diffstat (limited to 'drivers/mtd/nand/s3c2410_nand.c')
-rw-r--r--drivers/mtd/nand/s3c2410_nand.c189
1 files changed, 0 insertions, 189 deletions
diff --git a/drivers/mtd/nand/s3c2410_nand.c b/drivers/mtd/nand/s3c2410_nand.c
deleted file mode 100644
index 27351fb..0000000
--- a/drivers/mtd/nand/s3c2410_nand.c
+++ /dev/null
@@ -1,189 +0,0 @@
-/*
- * (C) Copyright 2006 OpenMoko, Inc.
- * Author: Harald Welte <laforge@openmoko.org>
- *
- * 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 <nand.h>
-#include <asm/arch/s3c24x0_cpu.h>
-#include <asm/io.h>
-
-#define S3C2410_NFCONF_EN (1<<15)
-#define S3C2410_NFCONF_512BYTE (1<<14)
-#define S3C2410_NFCONF_4STEP (1<<13)
-#define S3C2410_NFCONF_INITECC (1<<12)
-#define S3C2410_NFCONF_nFCE (1<<11)
-#define S3C2410_NFCONF_TACLS(x) ((x)<<8)
-#define S3C2410_NFCONF_TWRPH0(x) ((x)<<4)
-#define S3C2410_NFCONF_TWRPH1(x) ((x)<<0)
-
-#define S3C2410_ADDR_NALE 4
-#define S3C2410_ADDR_NCLE 8
-
-#ifdef CONFIG_NAND_SPL
-
-/* in the early stage of NAND flash booting, printf() is not available */
-#define printf(fmt, args...)
-
-static void nand_read_buf(struct mtd_info *mtd, u_char *buf, int len)
-{
- int i;
- struct nand_chip *this = mtd->priv;
-
- for (i = 0; i < len; i++)
- buf[i] = readb(this->IO_ADDR_R);
-}
-#endif
-
-static void s3c2410_hwcontrol(struct mtd_info *mtd, int cmd, unsigned int ctrl)
-{
- struct nand_chip *chip = mtd->priv;
- struct s3c2410_nand *nand = s3c2410_get_base_nand();
-
- debugX(1, "hwcontrol(): 0x%02x 0x%02x\n", cmd, ctrl);
-
- if (ctrl & NAND_CTRL_CHANGE) {
- ulong IO_ADDR_W = (ulong)nand;
-
- if (!(ctrl & NAND_CLE))
- IO_ADDR_W |= S3C2410_ADDR_NCLE;
- if (!(ctrl & NAND_ALE))
- IO_ADDR_W |= S3C2410_ADDR_NALE;
-
- chip->IO_ADDR_W = (void *)IO_ADDR_W;
-
- if (ctrl & NAND_NCE)
- writel(readl(&nand->nfconf) & ~S3C2410_NFCONF_nFCE,
- &nand->nfconf);
- else
- writel(readl(&nand->nfconf) | S3C2410_NFCONF_nFCE,
- &nand->nfconf);
- }
-
- if (cmd != NAND_CMD_NONE)
- writeb(cmd, chip->IO_ADDR_W);
-}
-
-static int s3c2410_dev_ready(struct mtd_info *mtd)
-{
- struct s3c2410_nand *nand = s3c2410_get_base_nand();
- debugX(1, "dev_ready\n");
- return readl(&nand->nfstat) & 0x01;
-}
-
-#ifdef CONFIG_S3C2410_NAND_HWECC
-void s3c2410_nand_enable_hwecc(struct mtd_info *mtd, int mode)
-{
- struct s3c2410_nand *nand = s3c2410_get_base_nand();
- debugX(1, "s3c2410_nand_enable_hwecc(%p, %d)\n", mtd, mode);
- writel(readl(&nand->nfconf) | S3C2410_NFCONF_INITECC, &nand->nfconf);
-}
-
-static int s3c2410_nand_calculate_ecc(struct mtd_info *mtd, const u_char *dat,
- u_char *ecc_code)
-{
- struct s3c2410_nand *nand = s3c2410_get_base_nand();
- ecc_code[0] = readb(&nand->nfecc);
- ecc_code[1] = readb(&nand->nfecc + 1);
- ecc_code[2] = readb(&nand->nfecc + 2);
- debugX(1, "s3c2410_nand_calculate_hwecc(%p,): 0x%02x 0x%02x 0x%02x\n",
- mtd , ecc_code[0], ecc_code[1], ecc_code[2]);
-
- return 0;
-}
-
-static int s3c2410_nand_correct_data(struct mtd_info *mtd, u_char *dat,
- u_char *read_ecc, u_char *calc_ecc)
-{
- if (read_ecc[0] == calc_ecc[0] &&
- read_ecc[1] == calc_ecc[1] &&
- read_ecc[2] == calc_ecc[2])
- return 0;
-
- printf("s3c2410_nand_correct_data: not implemented\n");
- return -1;
-}
-#endif
-
-int board_nand_init(struct nand_chip *nand)
-{
- u_int32_t cfg;
- u_int8_t tacls, twrph0, twrph1;
- struct s3c24x0_clock_power *clk_power = s3c24x0_get_base_clock_power();
- struct s3c2410_nand *nand_reg = s3c2410_get_base_nand();
-
- debugX(1, "board_nand_init()\n");
-
- writel(readl(&clk_power->clkcon) | (1 << 4), &clk_power->clkcon);
-
- /* initialize hardware */
-#if defined(CONFIG_S3C24XX_CUSTOM_NAND_TIMING)
- tacls = CONFIG_S3C24XX_TACLS;
- twrph0 = CONFIG_S3C24XX_TWRPH0;
- twrph1 = CONFIG_S3C24XX_TWRPH1;
-#else
- tacls = 4;
- twrph0 = 8;
- twrph1 = 8;
-#endif
-
- cfg = S3C2410_NFCONF_EN;
- cfg |= S3C2410_NFCONF_TACLS(tacls - 1);
- cfg |= S3C2410_NFCONF_TWRPH0(twrph0 - 1);
- cfg |= S3C2410_NFCONF_TWRPH1(twrph1 - 1);
- writel(cfg, &nand_reg->nfconf);
-
- /* initialize nand_chip data structure */
- nand->IO_ADDR_R = (void *)&nand_reg->nfdata;
- nand->IO_ADDR_W = (void *)&nand_reg->nfdata;
-
- nand->select_chip = NULL;
-
- /* read_buf and write_buf are default */
- /* read_byte and write_byte are default */
-#ifdef CONFIG_NAND_SPL
- nand->read_buf = nand_read_buf;
-#endif
-
- /* hwcontrol always must be implemented */
- nand->cmd_ctrl = s3c2410_hwcontrol;
-
- nand->dev_ready = s3c2410_dev_ready;
-
-#ifdef CONFIG_S3C2410_NAND_HWECC
- nand->ecc.hwctl = s3c2410_nand_enable_hwecc;
- nand->ecc.calculate = s3c2410_nand_calculate_ecc;
- nand->ecc.correct = s3c2410_nand_correct_data;
- nand->ecc.mode = NAND_ECC_HW;
- nand->ecc.size = CONFIG_SYS_NAND_ECCSIZE;
- nand->ecc.bytes = CONFIG_SYS_NAND_ECCBYTES;
-#else
- nand->ecc.mode = NAND_ECC_SOFT;
-#endif
-
-#ifdef CONFIG_S3C2410_NAND_BBT
- nand->options = NAND_USE_FLASH_BBT;
-#else
- nand->options = 0;
-#endif
-
- debugX(1, "end of nand_init\n");
-
- return 0;
-}