diff options
| -rw-r--r-- | README | 8 | ||||
| -rw-r--r-- | drivers/mtd/nand/ndfc.c | 33 | ||||
| -rw-r--r-- | nand_spl/nand_boot.c | 11 |
3 files changed, 45 insertions, 7 deletions
@@ -2917,6 +2917,14 @@ Low Level (hardware related) configuration options: - CONFIG_SYS_SRIOn_MEM_SIZE: Size of SRIO port 'n' memory region +- CONFIG_SYS_NDFC_16 + Defined to tell the NDFC that the NAND chip is using a + 16 bit bus. + +- CONFIG_SYS_NDFC_EBC0_CFG + Sets the EBC0_CFG register for the NDFC. If not defined + a default value will be used. + - CONFIG_SPD_EEPROM Get DDR timing information from an I2C EEPROM. Common with pluggable memory modules such as SODIMMs diff --git a/drivers/mtd/nand/ndfc.c b/drivers/mtd/nand/ndfc.c index 0729e0c..6ebbb5e 100644 --- a/drivers/mtd/nand/ndfc.c +++ b/drivers/mtd/nand/ndfc.c @@ -37,6 +37,13 @@ #include <asm/io.h> #include <asm/ppc4xx.h> +#ifndef CONFIG_SYS_NAND_BCR +#define CONFIG_SYS_NAND_BCR 0x80002222 +#endif +#ifndef CONFIG_SYS_NDFC_EBC0_CFG +#define CONFIG_SYS_NDFC_EBC0_CFG 0xb8400000 +#endif + /* * We need to store the info, which chip-select (CS) is used for the * chip number. For example on Sequoia NAND chip #0 uses @@ -140,12 +147,25 @@ static int ndfc_verify_buf(struct mtd_info *mtdinfo, const uint8_t *buf, int len return 0; } -#endif /* #ifndef CONFIG_NAND_SPL */ -#ifndef CONFIG_SYS_NAND_BCR -#define CONFIG_SYS_NAND_BCR 0x80002222 +/* + * Read a byte from the NDFC. + */ +static uint8_t ndfc_read_byte(struct mtd_info *mtd) +{ + + struct nand_chip *chip = mtd->priv; + +#ifdef CONFIG_SYS_NDFC_16BIT + return (uint8_t) readw(chip->IO_ADDR_R); +#else + return readb(chip->IO_ADDR_R); #endif +} + +#endif /* #ifndef CONFIG_NAND_SPL */ + void board_nand_select_device(struct nand_chip *nand, int chip) { /* @@ -198,16 +218,21 @@ int board_nand_init(struct nand_chip *nand) nand->ecc.bytes = 3; nand->select_chip = ndfc_select_chip; +#ifdef CONFIG_SYS_NDFC_16BIT + nand->options |= NAND_BUSWIDTH_16; +#endif + #ifndef CONFIG_NAND_SPL nand->write_buf = ndfc_write_buf; nand->verify_buf = ndfc_verify_buf; + nand->read_byte = ndfc_read_byte; chip++; #else /* * Setup EBC (CS0 only right now) */ - mtebc(EBC0_CFG, 0xb8400000); + mtebc(EBC0_CFG, CONFIG_SYS_NDFC_EBC0_CFG); mtebc(PB0CR, CONFIG_SYS_EBC_PB0CR); mtebc(PB0AP, CONFIG_SYS_EBC_PB0AP); diff --git a/nand_spl/nand_boot.c b/nand_spl/nand_boot.c index 9545a9a..4683c7c 100644 --- a/nand_spl/nand_boot.c +++ b/nand_spl/nand_boot.c @@ -122,10 +122,15 @@ static int nand_is_bad_block(struct mtd_info *mtd, int block) nand_command(mtd, block, 0, CONFIG_SYS_NAND_BAD_BLOCK_POS, NAND_CMD_READOOB); /* - * Read one byte + * Read one byte (or two if it's a 16 bit chip). */ - if (readb(this->IO_ADDR_R) != 0xff) - return 1; + if (this->options & NAND_BUSWIDTH_16) { + if (readw(this->IO_ADDR_R) != 0xffff) + return 1; + } else { + if (readb(this->IO_ADDR_R) != 0xff) + return 1; + } return 0; } |