CFI FLASH not in HAL device list

hi, everyone

i designed a nios ii board with SRAM, SDRAM, FLASH, EPCS, UART etc,

i can program my software to FLASH and EPCS through NIOS II IDE, the

board works correct, it sent message through UART to my hyper-terminal,

but, when i try use HAL to access UART and CFI FLASH, it does not work.

it can not open the device. i use debug to trace the program, i found that

in alt_device_list just has ONE device "/dev/EPCS",no UART and FLASH in the

list.

what's wrong? who can help me ?