#ifndef __K9F2G08_S3C_H__
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#define __K9F2G08_S3C_H__
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#include "s3c2440.h"
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static inline void bsp_init_nand(void)
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{
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unsigned int reg;
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struct s3c2440_clock_power *clkpwr = s3c2440_get_base_clock_power();
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clkpwr->CLKCON |= (1<<4);
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struct s3c2440_gpio *gpio = s3c2440_get_base_gpio();
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struct s3c2440_nand *nand = s3c2440_get_base_nand();
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reg = gpio->GPACON;
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reg |= (1<<22) | (1<<20) | (1<<19) | (1<<18) | (1<<17);
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gpio->GPACON = reg;
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nand->NFCONF = (1<<12) | (1<<8) | (1<<4) | (1<<3) |(1<<2) | (1<<5) | (0<<0);
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nand->NFCONT = 3;
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}
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static inline void bsp_nand_set_cs(int level)
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{
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struct s3c2440_nand *nand = s3c2440_get_base_nand();
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if (level == 0) {
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nand->NFCONT &= ~(1<<1);
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// while (nand->NFSTAT & (1<<1));
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} else {
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nand->NFCONT |= 1<<1;
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// while ((nand->NFSTAT & (1<<1)) == 0);
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}
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}
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static inline void bsp_nand_start_main_ecc(void)
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{
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struct s3c2440_nand *nand = s3c2440_get_base_nand();
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nand->NFCONT |= (1<<6) | (1<<5); // unlock all
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nand->NFCONT |= (1<<4); // init ecc
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nand->NFCONT &= ~(1<<6); // lock spare
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}
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static inline void bsp_nand_stop_main_ecc(void)
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{
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struct s3c2440_nand *nand = s3c2440_get_base_nand();
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nand->NFCONT |= (1<<5); // lock main
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}
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static inline void bsp_nand_start_spare_ecc(void)
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{
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struct s3c2440_nand *nand = s3c2440_get_base_nand();
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nand->NFCONT &= ~(1<<6); // unlock spare
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}
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static inline void bsp_nand_stop_spare_ecc(void)
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{
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struct s3c2440_nand *nand = s3c2440_get_base_nand();
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nand->NFCONT |= (1<<6); // lock spare
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}
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static inline int bsp_nand_spare_check_ecc(unsigned short ecc, int *err_byte, int *err_bit)
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{
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struct s3c2440_nand *nand = s3c2440_get_base_nand();
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unsigned int ecc_wr = ((ecc & 0xFF00) << 8) | (ecc & 0x00FF);
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nand->NFSECCD = ecc_wr;
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int err = nand->NFESTAT0;
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if ((err & (3<<2)) == (0<<2)) // no err
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return 0;
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if ((err & (3<<2)) == (1<<2)) { // 1 bit err
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*err_byte = (err >> 21) & 0x0F;
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*err_bit = (err >> 18) & 0x07;
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return 1;
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}
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return -1;
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}
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static inline int bsp_nand_main_check_ecc(unsigned int ecc, int *err_byte, int *err_bit)
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{
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struct s3c2440_nand *nand = s3c2440_get_base_nand();
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unsigned int ecc_wr = ((ecc & 0xFF00) << 8) | (ecc & 0x00FF);
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nand->NFMECCD0 = ecc_wr;
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ecc_wr = ((ecc & 0xFF000000) >> 8) | ((ecc & 0x00FF0000) >> 16);
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nand->NFMECCD1 = ecc_wr;
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int err = nand->NFESTAT0;
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if ((err & (3<<0)) == (0<<0)) // no err
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return 0;
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if ((err & (3<<0)) == (1<<0)) { // no err
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*err_byte = (err >> 7) & 0x7FF;
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*err_bit = (err >> 4) & 0x07;
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return 1;
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}
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return -1;
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}
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static inline void bsp_nand_write_cmd(unsigned char cmd)
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{
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struct s3c2440_nand *nand = s3c2440_get_base_nand();
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nand->NFCMD = cmd;
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}
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static inline void bsp_nand_write_addr(unsigned char addr)
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{
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struct s3c2440_nand *nand = s3c2440_get_base_nand();
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nand->NFADDR = addr;
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}
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static inline void bsp_nand_write_data32(unsigned int dat)
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{
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*(volatile unsigned int *)(&(s3c2440_get_base_nand()->NFDATA)) = dat;
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}
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static inline void bsp_nand_write_data16(unsigned short dat)
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{
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*(volatile unsigned short *)(&(s3c2440_get_base_nand()->NFDATA)) = dat;
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}
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static inline void bsp_nand_write_data8(unsigned char dat)
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{
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*(volatile unsigned char *)(&(s3c2440_get_base_nand()->NFDATA)) = dat;
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}
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static inline unsigned int bsp_nand_read_data32(void)
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{
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return *(volatile unsigned int *)(&(s3c2440_get_base_nand()->NFDATA));
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}
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static inline unsigned short bsp_nand_read_data16(void)
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{
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return *(volatile unsigned short *)(&(s3c2440_get_base_nand()->NFDATA));
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}
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static inline unsigned char bsp_nand_read_data8(void)
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{
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return *(volatile unsigned char *)(&(s3c2440_get_base_nand()->NFDATA));
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}
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static inline unsigned short bsp_nand_read_spare_ecc0(void)
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{
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struct s3c2440_nand *nand = s3c2440_get_base_nand();
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return nand->NFSECC & 0xFFFF;
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}
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static inline unsigned int bsp_nand_read_main_ecc0(void)
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{
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struct s3c2440_nand *nand = s3c2440_get_base_nand();
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return nand->NFMECC0;
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}
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static inline void bsp_nand_wait_busy(void)
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{
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int i;
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for (i=10; i>0; i--);
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struct s3c2440_nand *nand = s3c2440_get_base_nand();
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while ((nand->NFSTAT & (1<<0)) == 0);
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}
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#endif //__K9F2G08_S3C_H__
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