+++ /dev/null
-/***************************************************************************
- * Copyright (C) 2007, 2008 by Ben Dooks *
- * ben@fluff.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. *
- ***************************************************************************/
-
-/*
- * S3C2440 OpenOCD NAND Flash controller support.
- *
- * Many thanks to Simtec Electronics for sponsoring this work.
- */
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-
-#include "s3c24xx_nand.h"
-
-
-NAND_DEVICE_COMMAND_HANDLER(s3c2440_nand_device_command)
-{
- struct s3c24xx_nand_controller *info;
- CALL_S3C24XX_DEVICE_COMMAND(nand, &info);
-
- /* fill in the address fields for the core device */
- info->cmd = S3C2440_NFCMD;
- info->addr = S3C2440_NFADDR;
- info->data = S3C2440_NFDATA;
- info->nfstat = S3C2440_NFSTAT;
-
- return ERROR_OK;
-}
-
-static int s3c2440_init(struct nand_device *nand)
-{
- struct s3c24xx_nand_controller *s3c24xx_info = nand->controller_priv;
- struct target *target = s3c24xx_info->target;
-
- target_write_u32(target, S3C2410_NFCONF,
- S3C2440_NFCONF_TACLS(3) |
- S3C2440_NFCONF_TWRPH0(7) |
- S3C2440_NFCONF_TWRPH1(7));
-
- target_write_u32(target, S3C2440_NFCONT,
- S3C2440_NFCONT_INITECC | S3C2440_NFCONT_ENABLE);
-
- return ERROR_OK;
-}
-
-int s3c2440_nand_ready(struct nand_device *nand, int timeout)
-{
- struct s3c24xx_nand_controller *s3c24xx_info = nand->controller_priv;
- struct target *target = s3c24xx_info->target;
- uint8_t status;
-
- if (target->state != TARGET_HALTED) {
- LOG_ERROR("target must be halted to use S3C24XX NAND flash controller");
- return ERROR_NAND_OPERATION_FAILED;
- }
-
- do {
- target_read_u8(target, s3c24xx_info->nfstat, &status);
-
- if (status & S3C2440_NFSTAT_READY)
- return 1;
-
- alive_sleep(1);
- } while (timeout-- > 0);
-
-
- return 0;
-}
-
-/* use the fact we can read/write 4 bytes in one go via a single 32bit op */
-
-int s3c2440_read_block_data(struct nand_device *nand, uint8_t *data, int data_size)
-{
- struct s3c24xx_nand_controller *s3c24xx_info = nand->controller_priv;
- struct target *target = s3c24xx_info->target;
- uint32_t nfdata = s3c24xx_info->data;
- uint32_t tmp;
-
- LOG_INFO("%s: reading data: %p, %p, %d\n", __func__, nand, data, data_size);
-
- if (target->state != TARGET_HALTED) {
- LOG_ERROR("target must be halted to use S3C24XX NAND flash controller");
- return ERROR_NAND_OPERATION_FAILED;
- }
-
- while (data_size >= 4) {
- target_read_u32(target, nfdata, &tmp);
-
- data[0] = tmp;
- data[1] = tmp >> 8;
- data[2] = tmp >> 16;
- data[3] = tmp >> 24;
-
- data_size -= 4;
- data += 4;
- }
-
- while (data_size > 0) {
- target_read_u8(target, nfdata, data);
-
- data_size -= 1;
- data += 1;
- }
-
- return ERROR_OK;
-}
-
-int s3c2440_write_block_data(struct nand_device *nand, uint8_t *data, int data_size)
-{
- struct s3c24xx_nand_controller *s3c24xx_info = nand->controller_priv;
- struct target *target = s3c24xx_info->target;
- uint32_t nfdata = s3c24xx_info->data;
- uint32_t tmp;
-
- if (target->state != TARGET_HALTED) {
- LOG_ERROR("target must be halted to use S3C24XX NAND flash controller");
- return ERROR_NAND_OPERATION_FAILED;
- }
-
- while (data_size >= 4) {
- tmp = le_to_h_u32(data);
- target_write_u32(target, nfdata, tmp);
-
- data_size -= 4;
- data += 4;
- }
-
- while (data_size > 0) {
- target_write_u8(target, nfdata, *data);
-
- data_size -= 1;
- data += 1;
- }
-
- return ERROR_OK;
-}
-
-struct nand_flash_controller s3c2440_nand_controller = {
- .name = "s3c2440",
- .nand_device_command = &s3c2440_nand_device_command,
- .init = &s3c2440_init,
- .reset = &s3c24xx_reset,
- .command = &s3c24xx_command,
- .address = &s3c24xx_address,
- .write_data = &s3c24xx_write_data,
- .read_data = &s3c24xx_read_data,
- .write_page = s3c24xx_write_page,
- .read_page = s3c24xx_read_page,
- .write_block_data = &s3c2440_write_block_data,
- .read_block_data = &s3c2440_read_block_data,
- .controller_ready = &s3c24xx_controller_ready,
- .nand_ready = &s3c2440_nand_ready,
- };
projects / fw / openocd / blobdiff