EEPW论坛

LIT:600 - IOBUFDS symbol
   "processor_i/DDR2_SDRAM/DDR2_SDRAM/mpmc_core_0/gen_v5_ddr2_phy.mpmc_phy_if_0/u_phy_io_0/gen_dqs[0].u_iob_dqs/gen_dqs_iob_ddr2.u_iobuf_dqs" (output
   signal=processor_i/DDR2_SDRAM/DDR2_SDRAM/mpmc_core_0/gen_v5_ddr2_phy.mpmc_phy
   _if_0/u_phy_io_0/gen_dqs[0].u_iob_dqs/dqs_ibuf) does not have IOSTANDARD
   specified. Map is unable to generate a default IOSTANDARD for IOBUFDS, one
   has to be explicitly provided

还有是 使用别人搭好软核自己编程后进行到最后program FPGA时出现错误 提示

ELF file	:
E:/xilinx_project/without_cam_fin/SDK/empty_application_0/Debug/empty_applicatio
n_0.elf
ERROR:EDK:3165 - elfcheck failed!
The following sections did not fit into Processor BRAM memory:
 Section .jcr (0x9000072C - 0x9000072F)
 Section .eh_frame (0x90000728 - 0x9000072B)
 Section .data (0x90000618 - 0x90000727)
 Section .rodata (0x90000610 - 0x90000615)
 Section .dtors (0x90000608 - 0x9000060F)
 Section .ctors (0x90000600 - 0x90000607)
 Section .fini (0x900005E4 - 0x900005FF)
 Section .init (0x900005A8 - 0x900005E3)
 Section .text (0x90000000 - 0x900005A7)


Try using the linker script generation tools to generate an ELF that maps
correctly to your hardware design.
Programming the FPGA failed due to errors from elfcheck