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- /***************************************************************************
- * Copyright (C) 2009 by Marvell Semiconductors, Inc. *
- * Written by Nicolas Pitre <nico at marvell.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. *
- * *
- * 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., *
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. *
- ***************************************************************************/
-
- /*
- * NAND controller interface for Marvell Orion/Kirkwood SoCs.
- */
-
- #ifdef HAVE_CONFIG_H
- #include "config.h"
- #endif
-
- #include "imp.h"
- #include "arm_io.h"
- #include <target/arm.h>
-
- struct orion_nand_controller {
- struct arm_nand_data io;
-
- uint32_t cmd;
- uint32_t addr;
- uint32_t data;
- };
-
- #define CHECK_HALTED \
- do { \
- if (target->state != TARGET_HALTED) { \
- LOG_ERROR("NAND flash access requires halted target"); \
- return ERROR_NAND_OPERATION_FAILED; \
- } \
- } while (0)
-
- static int orion_nand_command(struct nand_device *nand, uint8_t command)
- {
- struct orion_nand_controller *hw = nand->controller_priv;
- struct target *target = nand->target;
-
- CHECK_HALTED;
- target_write_u8(target, hw->cmd, command);
- return ERROR_OK;
- }
-
- static int orion_nand_address(struct nand_device *nand, uint8_t address)
- {
- struct orion_nand_controller *hw = nand->controller_priv;
- struct target *target = nand->target;
-
- CHECK_HALTED;
- target_write_u8(target, hw->addr, address);
- return ERROR_OK;
- }
-
- static int orion_nand_read(struct nand_device *nand, void *data)
- {
- struct orion_nand_controller *hw = nand->controller_priv;
- struct target *target = nand->target;
-
- CHECK_HALTED;
- target_read_u8(target, hw->data, data);
- return ERROR_OK;
- }
-
- static int orion_nand_write(struct nand_device *nand, uint16_t data)
- {
- struct orion_nand_controller *hw = nand->controller_priv;
- struct target *target = nand->target;
-
- CHECK_HALTED;
- target_write_u8(target, hw->data, data);
- return ERROR_OK;
- }
-
- static int orion_nand_slow_block_write(struct nand_device *nand, uint8_t *data, int size)
- {
- while (size--)
- orion_nand_write(nand, *data++);
- return ERROR_OK;
- }
-
- static int orion_nand_fast_block_write(struct nand_device *nand, uint8_t *data, int size)
- {
- struct orion_nand_controller *hw = nand->controller_priv;
- int retval;
-
- hw->io.chunk_size = nand->page_size;
-
- retval = arm_nandwrite(&hw->io, data, size);
- if (retval == ERROR_NAND_NO_BUFFER)
- retval = orion_nand_slow_block_write(nand, data, size);
-
- return retval;
- }
-
- static int orion_nand_reset(struct nand_device *nand)
- {
- return orion_nand_command(nand, NAND_CMD_RESET);
- }
-
- NAND_DEVICE_COMMAND_HANDLER(orion_nand_device_command)
- {
- struct orion_nand_controller *hw;
- uint32_t base;
- uint8_t ale, cle;
-
- if (CMD_ARGC != 3)
- return ERROR_COMMAND_SYNTAX_ERROR;
-
- hw = calloc(1, sizeof(*hw));
- if (!hw) {
- LOG_ERROR("no memory for nand controller");
- return ERROR_NAND_DEVICE_INVALID;
- }
-
- nand->controller_priv = hw;
-
- COMMAND_PARSE_NUMBER(u32, CMD_ARGV[2], base);
- cle = 0;
- ale = 1;
-
- hw->data = base;
- hw->cmd = base + (1 << cle);
- hw->addr = base + (1 << ale);
-
- hw->io.target = nand->target;
- hw->io.data = hw->data;
- hw->io.op = ARM_NAND_NONE;
-
- return ERROR_OK;
- }
-
- static int orion_nand_init(struct nand_device *nand)
- {
- return ERROR_OK;
- }
-
- struct nand_flash_controller orion_nand_controller = {
- .name = "orion",
- .usage = "<target_id> <NAND_address>",
- .command = orion_nand_command,
- .address = orion_nand_address,
- .read_data = orion_nand_read,
- .write_data = orion_nand_write,
- .write_block_data = orion_nand_fast_block_write,
- .reset = orion_nand_reset,
- .nand_device_command = orion_nand_device_command,
- .init = orion_nand_init,
- };
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