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