diff options
Diffstat (limited to 'firmware/target/arm/tcc780x/ata-nand-tcc780x.c')
| -rw-r--r-- | firmware/target/arm/tcc780x/ata-nand-tcc780x.c | 36 |
1 files changed, 19 insertions, 17 deletions
diff --git a/firmware/target/arm/tcc780x/ata-nand-tcc780x.c b/firmware/target/arm/tcc780x/ata-nand-tcc780x.c index 0bf83da1f3..117a53a53b 100644 --- a/firmware/target/arm/tcc780x/ata-nand-tcc780x.c +++ b/firmware/target/arm/tcc780x/ata-nand-tcc780x.c @@ -74,6 +74,15 @@ static struct mutex ata_mtx SHAREDBSS_ATTR; #define ECC_ERRDATA (*(volatile unsigned long *)0xF005B060) #define ECC_ERR (*(volatile unsigned long *)0xF005B070) +/* GPIOs */ + +#define NAND_GPIO_SET(n) GPIOB_SET = n +#define NAND_GPIO_CLEAR(n) GPIOB_CLEAR = n +#define NAND_GPIO_OUT_EN(n) GPIOB_DIR |= n + +#define WE_GPIO_BIT (1<<19) /* Write Enable */ +#define CS_GPIO_BIT (1<<21) /* Chip Select (4 banks when used with NFC_CSx) */ + /* Chip characteristics, initialised by nand_get_chip_info() */ static int page_size = 0; @@ -96,13 +105,7 @@ static int segments_per_bank = 0; #define MAX_BLOCKS_PER_BANK 8192 #define MAX_PAGES_PER_BLOCK 128 #define BLOCKS_PER_SEGMENT 4 - -/* In theory we can support 4 banks, but only 2 have been seen on 2/4/8Gb D2s */ -#ifdef COWON_D2 -#define MAX_BANKS 2 -#else -#define MAX_BANKS 4 -#endif +#define MAX_BANKS 4 #define MAX_SEGMENTS (MAX_BLOCKS_PER_BANK * MAX_BANKS / BLOCKS_PER_SEGMENT) @@ -174,7 +177,7 @@ static void nand_chip_select(int bank) if (bank == -1) { /* Disable both chip selects */ - GPIOB_CLEAR = (1<<21); + NAND_GPIO_CLEAR(CS_GPIO_BIT); NFC_CTRL |= NFC_CS0 | NFC_CS1; } else @@ -197,13 +200,9 @@ static void nand_chip_select(int bank) /* Secondary chip select */ if (bank & 2) - { - GPIOB_SET = (1<<21); - } + NAND_GPIO_SET(CS_GPIO_BIT); else - { - GPIOB_CLEAR = (1<<21); - } + NAND_GPIO_CLEAR(CS_GPIO_BIT); } } @@ -224,7 +223,7 @@ static void nand_read_id(int bank, unsigned char* id_buf) nand_chip_select(bank); /* Set write protect */ - GPIOB_CLEAR = (1<<19); + NAND_GPIO_CLEAR(WE_GPIO_BIT); /* Reset command */ NFC_CMD = 0xFF; @@ -262,7 +261,7 @@ static void nand_read_uid(int bank, unsigned int* uid_buf) nand_chip_select(bank); /* Set write protect */ - GPIOB_CLEAR = 1<<19; + NAND_GPIO_CLEAR(WE_GPIO_BIT); /* Set 8-bit data width */ NFC_CTRL &= ~NFC_16BIT; @@ -314,7 +313,7 @@ static void nand_read_raw(int bank, int row, int column, int size, void* buf) nand_chip_select(bank); /* Set write protect */ - GPIOB_CLEAR = (1<<19); + NAND_GPIO_CLEAR(WE_GPIO_BIT); /* Set 8-bit data width */ NFC_CTRL &= ~NFC_16BIT; @@ -778,6 +777,9 @@ int ata_init(void) } } + /* Set GPIO direction for chip select & write protect */ + NAND_GPIO_OUT_EN(CS_GPIO_BIT | WE_GPIO_BIT); + /* Scan banks to build up block translation table */ for (bank = 0; bank < total_banks; bank++) { |