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/*
* NAND Flash Driver
*
* Copyright (C) 2006-2014 Texas Instruments.
*
* Based on Linux DaVinci NAND driver by TI.
*/
#ifndef _DAVINCI_NAND_H_
#define _DAVINCI_NAND_H_
#include <linux/mtd/nand.h>
#include <asm/arch/hardware.h>
#define NAND_READ_START 0x00
#define NAND_READ_END 0x30
#define NAND_STATUS 0x70
#define MASK_CLE 0x10
#define MASK_ALE 0x08
#ifdef CONFIG_SYS_NAND_MASK_CLE
#undef MASK_CLE
#define MASK_CLE CONFIG_SYS_NAND_MASK_CLE
#endif
#ifdef CONFIG_SYS_NAND_MASK_ALE
#undef MASK_ALE
#define MASK_ALE CONFIG_SYS_NAND_MASK_ALE
#endif
struct davinci_emif_regs {
uint32_t ercsr;
uint32_t awccr;
uint32_t sdbcr;
uint32_t sdrcr;
union {
uint32_t abncr[4];
struct {
uint32_t ab1cr;
uint32_t ab2cr;
uint32_t ab3cr;
uint32_t ab4cr;
};
};
uint32_t sdtimr;
uint32_t ddrsr;
uint32_t ddrphycr;
uint32_t ddrphysr;
uint32_t totar;
uint32_t totactr;
uint32_t ddrphyid_rev;
uint32_t sdsretr;
uint32_t eirr;
uint32_t eimr;
uint32_t eimsr;
uint32_t eimcr;
uint32_t ioctrlr;
uint32_t iostatr;
uint32_t rsvd0;
uint32_t one_nand_cr;
uint32_t nandfcr;
uint32_t nandfsr;
uint32_t rsvd1[2];
uint32_t nandfecc[4];
uint32_t rsvd2[15];
uint32_t nand4biteccload;
uint32_t nand4bitecc[4];
uint32_t nanderradd1;
uint32_t nanderradd2;
uint32_t nanderrval1;
uint32_t nanderrval2;
};
#define davinci_emif_regs \
((struct davinci_emif_regs *)DAVINCI_ASYNC_EMIF_CNTRL_BASE)
#define DAVINCI_NANDFCR_NAND_ENABLE(n) (1 << ((n) - 2))
#define DAVINCI_NANDFCR_4BIT_ECC_SEL_MASK (3 << 4)
#define DAVINCI_NANDFCR_4BIT_ECC_SEL(n) (((n) - 2) << 4)
#define DAVINCI_NANDFCR_1BIT_ECC_START(n) (1 << (8 + ((n) - 2)))
#define DAVINCI_NANDFCR_4BIT_ECC_START (1 << 12)
#define DAVINCI_NANDFCR_4BIT_CALC_START (1 << 13)
#define DAVINCI_NANDFCR_CS2NAND (1 << 0)
/* Chip Select setup */
#define DAVINCI_ABCR_STROBE_SELECT (1 << 31)
#define DAVINCI_ABCR_EXT_WAIT (1 << 30)
#define DAVINCI_ABCR_WSETUP(n) (n << 26)
#define DAVINCI_ABCR_WSTROBE(n) (n << 20)
#define DAVINCI_ABCR_WHOLD(n) (n << 17)
#define DAVINCI_ABCR_RSETUP(n) (n << 13)
#define DAVINCI_ABCR_RSTROBE(n) (n << 7)
#define DAVINCI_ABCR_RHOLD(n) (n << 4)
#define DAVINCI_ABCR_TA(n) (n << 2)
#define DAVINCI_ABCR_ASIZE_16BIT 1
#define DAVINCI_ABCR_ASIZE_8BIT 0
void davinci_nand_init(struct nand_chip *nand);
#endif
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