diff options
Diffstat (limited to 'drivers/mtd/nand/s3c2410_nand.c')
| -rw-r--r-- | drivers/mtd/nand/s3c2410_nand.c | 62 |
1 files changed, 25 insertions, 37 deletions
diff --git a/drivers/mtd/nand/s3c2410_nand.c b/drivers/mtd/nand/s3c2410_nand.c index d27a62547..f2f3e722e 100644 --- a/drivers/mtd/nand/s3c2410_nand.c +++ b/drivers/mtd/nand/s3c2410_nand.c @@ -20,29 +20,10 @@ #include <common.h> -#if 0 -#define DEBUGN printf -#else -#define DEBUGN(x, args ...) {} -#endif - #include <nand.h> #include <s3c2410.h> #include <asm/io.h> -#define __REGb(x) (*(volatile unsigned char *)(x)) -#define __REGi(x) (*(volatile unsigned int *)(x)) - -#define NF_BASE 0x4e000000 -#define NFCONF __REGi(NF_BASE + 0x0) -#define NFCMD __REGb(NF_BASE + 0x4) -#define NFADDR __REGb(NF_BASE + 0x8) -#define NFDATA __REGb(NF_BASE + 0xc) -#define NFSTAT __REGb(NF_BASE + 0x10) -#define NFECC0 __REGb(NF_BASE + 0x14) -#define NFECC1 __REGb(NF_BASE + 0x15) -#define NFECC2 __REGb(NF_BASE + 0x16) - #define S3C2410_NFCONF_EN (1<<15) #define S3C2410_NFCONF_512BYTE (1<<14) #define S3C2410_NFCONF_4STEP (1<<13) @@ -58,11 +39,12 @@ static void s3c2410_hwcontrol(struct mtd_info *mtd, int cmd, unsigned int ctrl) { struct nand_chip *chip = mtd->priv; + struct s3c2410_nand *nand = s3c2410_get_base_nand(); - DEBUGN("hwcontrol(): 0x%02x 0x%02x\n", cmd, ctrl); + debugX(1, "hwcontrol(): 0x%02x 0x%02x\n", cmd, ctrl); if (ctrl & NAND_CTRL_CHANGE) { - ulong IO_ADDR_W = NF_BASE; + ulong IO_ADDR_W = (ulong)nand; if (!(ctrl & NAND_CLE)) IO_ADDR_W |= S3C2410_ADDR_NCLE; @@ -72,9 +54,11 @@ static void s3c2410_hwcontrol(struct mtd_info *mtd, int cmd, unsigned int ctrl) chip->IO_ADDR_W = (void *)IO_ADDR_W; if (ctrl & NAND_NCE) - NFCONF &= ~S3C2410_NFCONF_nFCE; + writel(readl(&nand->NFCONF) & ~S3C2410_NFCONF_nFCE, + &nand->NFCONF); else - NFCONF |= S3C2410_NFCONF_nFCE; + writel(readl(&nand->NFCONF) | S3C2410_NFCONF_nFCE, + &nand->NFCONF); } if (cmd != NAND_CMD_NONE) @@ -83,15 +67,17 @@ static void s3c2410_hwcontrol(struct mtd_info *mtd, int cmd, unsigned int ctrl) static int s3c2410_dev_ready(struct mtd_info *mtd) { - DEBUGN("dev_ready\n"); - return (NFSTAT & 0x01); + struct s3c2410_nand *nand = s3c2410_get_base_nand(); + debugX(1, "dev_ready\n"); + return readl(&nand->NFSTAT) & 0x01; } #ifdef CONFIG_S3C2410_NAND_HWECC void s3c2410_nand_enable_hwecc(struct mtd_info *mtd, int mode) { - DEBUGN("s3c2410_nand_enable_hwecc(%p, %d)\n", mtd, mode); - NFCONF |= S3C2410_NFCONF_INITECC; + struct s3c2410_nand *nand = s3c2410_get_base_nand(); + debugX(1, "s3c2410_nand_enable_hwecc(%p, %d)\n", mtd, mode); + writel(readl(&nand->NFCONF) | S3C2410_NFCONF_INITECC, &nand->NFCONF); } static int s3c2410_nand_calculate_ecc(struct mtd_info *mtd, const u_char *dat, @@ -100,8 +86,8 @@ static int s3c2410_nand_calculate_ecc(struct mtd_info *mtd, const u_char *dat, ecc_code[0] = NFECC0; ecc_code[1] = NFECC1; ecc_code[2] = NFECC2; - DEBUGN("s3c2410_nand_calculate_hwecc(%p,): 0x%02x 0x%02x 0x%02x\n", - mtd , ecc_code[0], ecc_code[1], ecc_code[2]); + debugX(1, "s3c2410_nand_calculate_hwecc(%p,): 0x%02x 0x%02x 0x%02x\n", + mtd , ecc_code[0], ecc_code[1], ecc_code[2]); return 0; } @@ -123,24 +109,26 @@ int board_nand_init(struct nand_chip *nand) { u_int32_t cfg; u_int8_t tacls, twrph0, twrph1; - S3C24X0_CLOCK_POWER * const clk_power = S3C24X0_GetBase_CLOCK_POWER(); + struct s3c24x0_clock_power *clk_power = s3c24x0_get_base_clock_power(); + struct s3c2410_nand *nand_reg = s3c2410_get_base_nand(); - DEBUGN("board_nand_init()\n"); + debugX(1, "board_nand_init()\n"); - clk_power->CLKCON |= (1 << 4); + writel(readl(&clk_power->CLKCON) | (1 << 4), &clk_power->CLKCON); /* initialize hardware */ - twrph0 = 3; twrph1 = 0; tacls = 0; + twrph0 = 3; + twrph1 = 0; + tacls = 0; cfg = S3C2410_NFCONF_EN; cfg |= S3C2410_NFCONF_TACLS(tacls - 1); cfg |= S3C2410_NFCONF_TWRPH0(twrph0 - 1); cfg |= S3C2410_NFCONF_TWRPH1(twrph1 - 1); - - NFCONF = cfg; + writel(cfg, &nand_reg->NFCONF); /* initialize nand_chip data structure */ - nand->IO_ADDR_R = nand->IO_ADDR_W = (void *)0x4e00000c; + nand->IO_ADDR_R = nand->IO_ADDR_W = (void *)&nand_reg->NFDATA; /* read_buf and write_buf are default */ /* read_byte and write_byte are default */ @@ -165,7 +153,7 @@ int board_nand_init(struct nand_chip *nand) nand->options = 0; #endif - DEBUGN("end of nand_init\n"); + debugX(1, "end of nand_init\n"); return 0; } |