/*
 *  linux/include/linux/mtd/onenand_regs.h
 *
 *  OneNAND Register header file
 *
 *  Copyright (C) 2005 Samsung Electronics
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#ifndef __ONENAND_REG_H
#define __ONENAND_REG_H

/* Memory Address Map Translation (Word order) */
#define ONENAND_MEMORY_MAP(x)		((x) << 1)

/*
 * External BufferRAM area
 */
#define	ONENAND_BOOTRAM			ONENAND_MEMORY_MAP(0x0000)
#define	ONENAND_DATARAM			ONENAND_MEMORY_MAP(0x0200)
#define	ONENAND_SPARERAM		ONENAND_MEMORY_MAP(0x8010)

/*
 * OneNAND Registers
 */
#define ONENAND_REG_MANUFACTURER_ID	ONENAND_MEMORY_MAP(0xF000)
#define ONENAND_REG_DEVICE_ID		ONENAND_MEMORY_MAP(0xF001)
#define ONENAND_REG_VERSION_ID		ONENAND_MEMORY_MAP(0xF002)
#define ONENAND_REG_DATA_BUFFER_SIZE	ONENAND_MEMORY_MAP(0xF003)
#define ONENAND_REG_BOOT_BUFFER_SIZE	ONENAND_MEMORY_MAP(0xF004)
#define ONENAND_REG_NUM_BUFFERS		ONENAND_MEMORY_MAP(0xF005)
#define ONENAND_REG_TECHNOLOGY		ONENAND_MEMORY_MAP(0xF006)

#define ONENAND_REG_START_ADDRESS1	ONENAND_MEMORY_MAP(0xF100)
#define ONENAND_REG_START_ADDRESS2	ONENAND_MEMORY_MAP(0xF101)
#define ONENAND_REG_START_ADDRESS3	ONENAND_MEMORY_MAP(0xF102)
#define ONENAND_REG_START_ADDRESS4	ONENAND_MEMORY_MAP(0xF103)
#define ONENAND_REG_START_ADDRESS5	ONENAND_MEMORY_MAP(0xF104)
#define ONENAND_REG_START_ADDRESS6	ONENAND_MEMORY_MAP(0xF105)
#define ONENAND_REG_START_ADDRESS7	ONENAND_MEMORY_MAP(0xF106)
#define ONENAND_REG_START_ADDRESS8	ONENAND_MEMORY_MAP(0xF107)

#define ONENAND_REG_START_BUFFER	ONENAND_MEMORY_MAP(0xF200)
#define ONENAND_REG_COMMAND		ONENAND_MEMORY_MAP(0xF220)
#define ONENAND_REG_SYS_CFG1		ONENAND_MEMORY_MAP(0xF221)
#define ONENAND_REG_SYS_CFG2		ONENAND_MEMORY_MAP(0xF222)
#define ONENAND_REG_CTRL_STATUS		ONENAND_MEMORY_MAP(0xF240)
#define ONENAND_REG_INTERRUPT		ONENAND_MEMORY_MAP(0xF241)
#define ONENAND_REG_START_BLOCK_ADDRESS	ONENAND_MEMORY_MAP(0xF24C)
#define ONENAND_REG_END_BLOCK_ADDRESS	ONENAND_MEMORY_MAP(0xF24D)
#define ONENAND_REG_WP_STATUS		ONENAND_MEMORY_MAP(0xF24E)

#define ONENAND_REG_ECC_STATUS		ONENAND_MEMORY_MAP(0xFF00)
#define ONENAND_REG_ECC_M0		ONENAND_MEMORY_MAP(0xFF01)
#define ONENAND_REG_ECC_S0		ONENAND_MEMORY_MAP(0xFF02)
#define ONENAND_REG_ECC_M1		ONENAND_MEMORY_MAP(0xFF03)
#define ONENAND_REG_ECC_S1		ONENAND_MEMORY_MAP(0xFF04)
#define ONENAND_REG_ECC_M2		ONENAND_MEMORY_MAP(0xFF05)
#define ONENAND_REG_ECC_S2		ONENAND_MEMORY_MAP(0xFF06)
#define ONENAND_REG_ECC_M3		ONENAND_MEMORY_MAP(0xFF07)
#define ONENAND_REG_ECC_S3		ONENAND_MEMORY_MAP(0xFF08)

/*
 * Device ID Register F001h (R)
 */
#define ONENAND_DEVICE_DENSITY_SHIFT	(4)
#define ONENAND_DEVICE_IS_DDP		(1 << 3)
#define ONENAND_DEVICE_IS_DEMUX		(1 << 2)
#define ONENAND_DEVICE_VCC_MASK		(0x3)

#define ONENAND_DEVICE_DENSITY_512Mb	(0x002)

/*
 * Version ID Register F002h (R)
 */
#define ONENAND_VERSION_PROCESS_SHIFT	(8)

/*
 * Start Address 1 F100h (R/W)
 */
#define ONENAND_DDP_SHIFT		(15)

/*
 * Start Address 8 F107h (R/W)
 */
#define ONENAND_FPA_MASK		(0x3f)
#define ONENAND_FPA_SHIFT		(2)
#define ONENAND_FSA_MASK		(0x03)

/*
 * Start Buffer Register F200h (R/W)
 */
#define ONENAND_BSA_MASK		(0x03)
#define ONENAND_BSA_SHIFT		(8)
#define ONENAND_BSA_BOOTRAM		(0 << 2)
#define ONENAND_BSA_DATARAM0		(2 << 2)
#define ONENAND_BSA_DATARAM1		(3 << 2)
#define ONENAND_BSC_MASK		(0x03)

/*
 * Command Register F220h (R/W)
 */
#define ONENAND_CMD_READ		(0x00)
#define ONENAND_CMD_READOOB		(0x13)
#define ONENAND_CMD_PROG		(0x80)
#define ONENAND_CMD_PROGOOB		(0x1A)
#define ONENAND_CMD_UNLOCK		(0x23)
#define ONENAND_CMD_LOCK		(0x2A)
#define ONENAND_CMD_LOCK_TIGHT		(0x2C)
#define ONENAND_CMD_ERASE		(0x94)
#define ONENAND_CMD_RESET		(0xF0)
#define ONENAND_CMD_READID		(0x90)

/* NOTE: Those are not *REAL* commands */
#define ONENAND_CMD_BUFFERRAM		(0x1978)

/*
 * System Configuration 1 Register F221h (R, R/W)
 */
#define ONENAND_SYS_CFG1_SYNC_READ	(1 << 15)
#define ONENAND_SYS_CFG1_BRL		(12)
#define ONENAND_SYS_CFG1_BL		(9)
#define ONENAND_SYS_CFG1_NO_ECC		(1 << 8)
#define ONENAND_SYS_CFG1_RDY		(1 << 7)
#define ONENAND_SYS_CFG1_INT		(1 << 6)
#define ONENAND_SYS_CFG1_IOBE		(1 << 5)
#define ONENAND_SYS_CFG1_RDY_CONF	(1 << 4)

/*
 * Controller Status Register F240h (R)
 */
#define ONENAND_CTRL_ONGO		(1 << 15)
#define ONENAND_CTRL_LOCK		(1 << 14)
#define ONENAND_CTRL_LOAD		(1 << 13)
#define ONENAND_CTRL_PROGRAM		(1 << 12)
#define ONENAND_CTRL_ERASE		(1 << 11)
#define ONENAND_CTRL_ERROR		(1 << 10)
#define ONENAND_CTRL_RSTB		(1 << 7)

/*
 * Interrupt Status Register F241h (R)
 */
#define ONENAND_INT_MASTER		(1 << 15)
#define ONENAND_INT_READ		(1 << 7)
#define ONENAND_INT_WRITE		(1 << 6)
#define ONENAND_INT_ERASE		(1 << 5)
#define ONENAND_INT_RESET		(1 << 4)
#define ONENAND_INT_CLEAR		(0 << 0)

/*
 * NAND Flash Write Protection Status Register F24Eh (R)
 */
#define ONENAND_WP_US			(1 << 2)
#define ONENAND_WP_LS			(1 << 1)
#define ONENAND_WP_LTS			(1 << 0)

/*
 * ECC Status Reigser FF00h (R)
 */
#define ONENAND_ECC_1BIT		(1 << 0)
#define ONENAND_ECC_2BIT		(1 << 1)
#define ONENAND_ECC_2BIT_ALL		(0xAAAA)

#endif	/* __ONENAND_REG_H */