summaryrefslogtreecommitdiff
path: root/cpu/arm920t
diff options
context:
space:
mode:
authorJean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>2009-03-30 18:58:40 +0200
committerJean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>2009-03-30 18:58:40 +0200
commitb3f66b0ba09949e0796ce7fad6367f75f15ed890 (patch)
tree87ae475c3d7de1a78e7a322caf6a758268461f52 /cpu/arm920t
parentd3b635774194404bcd424f6b376419bce22076ad (diff)
downloadu-boot-imx-b3f66b0ba09949e0796ce7fad6367f75f15ed890.zip
u-boot-imx-b3f66b0ba09949e0796ce7fad6367f75f15ed890.tar.gz
u-boot-imx-b3f66b0ba09949e0796ce7fad6367f75f15ed890.tar.bz2
s3c2410: move nand driver to drivers/mtd/nand
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Diffstat (limited to 'cpu/arm920t')
-rw-r--r--cpu/arm920t/s3c24x0/Makefile2
-rw-r--r--cpu/arm920t/s3c24x0/nand.c179
2 files changed, 1 insertions, 180 deletions
diff --git a/cpu/arm920t/s3c24x0/Makefile b/cpu/arm920t/s3c24x0/Makefile
index fd13e53..3afe19c 100644
--- a/cpu/arm920t/s3c24x0/Makefile
+++ b/cpu/arm920t/s3c24x0/Makefile
@@ -25,7 +25,7 @@ include $(TOPDIR)/config.mk
LIB = $(obj)lib$(SOC).a
-COBJS = interrupts.o speed.o usb.o usb_ohci.o nand.o
+COBJS = interrupts.o speed.o usb.o usb_ohci.o
SRCS := $(SOBJS:.o=.S) $(COBJS:.o=.c)
OBJS := $(addprefix $(obj),$(SOBJS) $(COBJS))
diff --git a/cpu/arm920t/s3c24x0/nand.c b/cpu/arm920t/s3c24x0/nand.c
deleted file mode 100644
index 60174fb..0000000
--- a/cpu/arm920t/s3c24x0/nand.c
+++ /dev/null
@@ -1,179 +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>
-
-#if 0
-#define DEBUGN printf
-#else
-#define DEBUGN(x, args ...) {}
-#endif
-
-#if defined(CONFIG_CMD_NAND)
-#if !defined(CONFIG_NAND_LEGACY)
-
-#include <nand.h>
-#include <s3c2410.h>
-#include <asm/io.h>
-
-#define __REGb(x) (*(volatile unsigned char *)(x))
-#define __REGi(x) (*(volatile unsigned int *)(x))
-
-#define NF_BASE 0x4e000000
-#define NFCONF __REGi(NF_BASE + 0x0)
-#define NFCMD __REGb(NF_BASE + 0x4)
-#define NFADDR __REGb(NF_BASE + 0x8)
-#define NFDATA __REGb(NF_BASE + 0xc)
-#define NFSTAT __REGb(NF_BASE + 0x10)
-#define NFECC0 __REGb(NF_BASE + 0x14)
-#define NFECC1 __REGb(NF_BASE + 0x15)
-#define NFECC2 __REGb(NF_BASE + 0x16)
-
-#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
-
-static void s3c2410_hwcontrol(struct mtd_info *mtd, int cmd, unsigned int ctrl)
-{
- struct nand_chip *chip = mtd->priv;
-
- DEBUGN("hwcontrol(): 0x%02x 0x%02x\n", cmd, ctrl);
-
- if (ctrl & NAND_CTRL_CHANGE) {
- ulong IO_ADDR_W = NF_BASE;
-
- 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)
- NFCONF &= ~S3C2410_NFCONF_nFCE;
- else
- NFCONF |= S3C2410_NFCONF_nFCE;
- }
-
- if (cmd != NAND_CMD_NONE)
- writeb(cmd, chip->IO_ADDR_W);
-}
-
-static int s3c2410_dev_ready(struct mtd_info *mtd)
-{
- DEBUGN("dev_ready\n");
- return (NFSTAT & 0x01);
-}
-
-#ifdef CONFIG_S3C2410_NAND_HWECC
-void s3c2410_nand_enable_hwecc(struct mtd_info *mtd, int mode)
-{
- DEBUGN("s3c2410_nand_enable_hwecc(%p, %d)\n", mtd, mode);
- NFCONF |= S3C2410_NFCONF_INITECC;
-}
-
-static int s3c2410_nand_calculate_ecc(struct mtd_info *mtd, const u_char *dat,
- u_char *ecc_code)
-{
- ecc_code[0] = NFECC0;
- ecc_code[1] = NFECC1;
- ecc_code[2] = NFECC2;
- DEBUGN("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;
- S3C24X0_CLOCK_POWER * const clk_power = S3C24X0_GetBase_CLOCK_POWER();
-
- DEBUGN("board_nand_init()\n");
-
- clk_power->CLKCON |= (1 << 4);
-
- /* initialize hardware */
- twrph0 = 3; twrph1 = 0; tacls = 0;
-
- cfg = S3C2410_NFCONF_EN;
- cfg |= S3C2410_NFCONF_TACLS(tacls - 1);
- cfg |= S3C2410_NFCONF_TWRPH0(twrph0 - 1);
- cfg |= S3C2410_NFCONF_TWRPH1(twrph1 - 1);
-
- NFCONF = cfg;
-
- /* initialize nand_chip data structure */
- nand->IO_ADDR_R = nand->IO_ADDR_W = (void *)0x4e00000c;
-
- /* read_buf and write_buf are default */
- /* read_byte and write_byte are default */
-
- /* 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_HW3_512;
-#else
- nand->ecc.mode = NAND_ECC_SOFT;
-#endif
-
-#ifdef CONFIG_S3C2410_NAND_BBT
- nand->options = NAND_USE_FLASH_BBT;
-#else
- nand->options = 0;
-#endif
-
- DEBUGN("end of nand_init\n");
-
- return 0;
-}
-
-#else
- #error "U-Boot legacy NAND support not available for S3C2410"
-#endif
-#endif