diff options
Diffstat (limited to 'drivers/mtd')
| -rw-r--r-- | drivers/mtd/nand/mxc_nand.c | 46 |
1 files changed, 43 insertions, 3 deletions
diff --git a/drivers/mtd/nand/mxc_nand.c b/drivers/mtd/nand/mxc_nand.c index eb0323f..b2b612e 100644 --- a/drivers/mtd/nand/mxc_nand.c +++ b/drivers/mtd/nand/mxc_nand.c @@ -149,6 +149,43 @@ static struct nand_ecclayout nand_soft_eccoob = { }; #endif +static struct nand_ecclayout nand_hw_eccoob_largepage = { + .eccbytes = 20, + .eccpos = {6, 7, 8, 9, 10, 22, 23, 24, 25, 26, + 38, 39, 40, 41, 42, 54, 55, 56, 57, 58}, + .oobfree = {{2, 4}, {11, 10}, {27, 10}, {43, 10}, {59, 5}, } +}; + +#ifdef CONFIG_MX27 +static int is_16bit_nand(void) +{ + struct system_control_regs *sc_regs = + (struct system_control_regs *)IMX_SYSTEM_CTL_BASE; + + if (readl(&sc_regs->fmcr) & NF_16BIT_SEL) + return 1; + else + return 0; +} +#elif defined(CONFIG_MX31) +static int is_16bit_nand(void) +{ + struct clock_control_regs *sc_regs = + (struct clock_control_regs *)CCM_BASE; + + if (readl(&sc_regs->rcsr) & CCM_RCSR_NF16B) + return 1; + else + return 0; +} +#else +#warning "8/16 bit NAND autodetection not supported" +static int is_16bit_nand(void) +{ + return 0; +} +#endif + static uint32_t *mxc_nand_memcpy32(uint32_t *dest, uint32_t *source, size_t size) { uint32_t *d = dest; @@ -808,8 +845,6 @@ static void mxc_nand_command(struct mtd_info *mtd, unsigned command, int board_nand_init(struct nand_chip *this) { - struct system_control_regs *sc_regs = - (struct system_control_regs *)IMX_SYSTEM_CTL_BASE; struct mtd_info *mtd; uint16_t tmp; int err = 0; @@ -871,10 +906,15 @@ int board_nand_init(struct nand_chip *this) writew(0x4, &host->regs->nfc_wrprot); /* NAND bus width determines access funtions used by upper layer */ - if (readl(&sc_regs->fmcr) & NF_16BIT_SEL) + if (is_16bit_nand()) this->options |= NAND_BUSWIDTH_16; +#ifdef CONFIG_SYS_NAND_LARGEPAGE + host->pagesize_2k = 1; + this->ecc.layout = &nand_hw_eccoob_largepage; +#else host->pagesize_2k = 0; +#endif return err; } |