diff options
Diffstat (limited to 'drivers/mtd/nand/zynq_nand.c')
| -rw-r--r-- | drivers/mtd/nand/zynq_nand.c | 23 |
1 files changed, 21 insertions, 2 deletions
diff --git a/drivers/mtd/nand/zynq_nand.c b/drivers/mtd/nand/zynq_nand.c index 948f05984c..076b878244 100644 --- a/drivers/mtd/nand/zynq_nand.c +++ b/drivers/mtd/nand/zynq_nand.c @@ -35,6 +35,8 @@ (0x1 << 4) | /* Clear interrupt */ \ (0x1 << 6)) /* Disable ECC interrupt */ +#ifndef CONFIG_NAND_ZYNQ_USE_BOOTLOADER1_TIMINGS + /* Assuming 50MHz clock (20ns cycle time) and 3V operation */ #define ZYNQ_NAND_SET_CYCLES ((0x2 << 20) | /* t_rr from nand_cycles */ \ (0x2 << 17) | /* t_ar from nand_cycles */ \ @@ -43,6 +45,7 @@ (0x2 << 8) | /* t_rea from nand_cycles */ \ (0x5 << 4) | /* t_wc from nand_cycles */ \ (0x5 << 0)) /* t_rc from nand_cycles */ +#endif #define ZYNQ_NAND_DIRECT_CMD ((0x4 << 23) | /* Chip 0 from interface 1 */ \ @@ -81,6 +84,13 @@ #define ZYNQ_NAND_ECC_BUSY (1 << 6) /* ECC block is busy */ #define ZYNQ_NAND_ECC_MASK 0x00FFFFFF /* ECC value mask */ +#ifndef NAND_CMD_LOCK_TIGHT +#define NAND_CMD_LOCK_TIGHT 0x2c +#endif + +#ifndef NAND_CMD_LOCK_STATUS +#define NAND_CMD_LOCK_STATUS 0x7a +#endif /* SMC register set */ struct zynq_nand_smc_regs { @@ -141,6 +151,11 @@ static const struct zynq_nand_command_format zynq_nand_commands[] = { {NAND_CMD_PARAM, NAND_CMD_NONE, 1, 0}, {NAND_CMD_GET_FEATURES, NAND_CMD_NONE, 1, 0}, {NAND_CMD_SET_FEATURES, NAND_CMD_NONE, 1, 0}, + {NAND_CMD_LOCK, NAND_CMD_NONE, 0, 0}, + {NAND_CMD_LOCK_TIGHT, NAND_CMD_NONE, 0, 0}, + {NAND_CMD_UNLOCK1, NAND_CMD_NONE, 3, 0}, + {NAND_CMD_UNLOCK2, NAND_CMD_NONE, 3, 0}, + {NAND_CMD_LOCK_STATUS, NAND_CMD_NONE, 3, 0}, {NAND_CMD_NONE, NAND_CMD_NONE, 0, 0}, /* Add all the flash commands supported by the flash device */ }; @@ -245,8 +260,10 @@ static int zynq_nand_init_nand_flash(int option) /* disable interrupts */ writel(ZYNQ_NAND_CLR_CONFIG, &zynq_nand_smc_base->cfr); +#ifndef CONFIG_NAND_ZYNQ_USE_BOOTLOADER1_TIMINGS /* Initialize the NAND interface by setting cycles and operation mode */ writel(ZYNQ_NAND_SET_CYCLES, &zynq_nand_smc_base->scr); +#endif if (option & NAND_BUSWIDTH_16) writel(ZYNQ_NAND_SET_OPMODE_16BIT, &zynq_nand_smc_base->sor); else @@ -989,7 +1006,7 @@ static int zynq_nand_device_ready(struct mtd_info *mtd) return 0; } -static int zynq_nand_init(struct nand_chip *nand_chip, int devnum) +int zynq_nand_init(struct nand_chip *nand_chip, int devnum) { struct zynq_nand_info *xnand; struct mtd_info *mtd; @@ -1175,12 +1192,14 @@ fail: return err; } +#ifdef CONFIG_SYS_NAND_SELF_INIT static struct nand_chip nand_chip[CONFIG_SYS_MAX_NAND_DEVICE]; -void board_nand_init(void) +void __weak board_nand_init(void) { struct nand_chip *nand = &nand_chip[0]; if (zynq_nand_init(nand, 0)) puts("ZYNQ NAND init failed\n"); } +#endif |