Hi,

I am developing an OpenWRT based system. I got an SDK from a chip provider that includes U-Boot 2014.0. I want to extend its functionality with UBI. I've added CONFIG_CMD_UBI, without any problems. I get ubi commands in uboot now.

But: setenv mtdids nand0=my_nand setenv mtdparts mtdparts=my_nand:1m(bootloader),-(ubi) mtdparts Device nand0 not found! nand Unknown command 'nand' - try 'help'

Seems that I do not have nand driver. I do access nand with flash commands. Add NAND: #define CONFIG_CMD_NAND #define CONFIG_SYS_MAX_NAND_DEVICE 1

produces: undefined CONFIG_SYS_NAND_BASE

Adding SPI base as Nand base: #define CONFIG_SYS_NAND_BASE 0x1df10000

produces: drivers/mtd/nand/nand.c:180: undefined reference to `board_nand_init'

1. Does it mean that uboot nand driver is not included in this SDK ? 2. Is it possible to enable UBI with spi flash driver (if nand driver is missing) ?

Thank you and best regards