错误代码是： -Map u-boot.map -o u-boot
cpu/arm920t/libarm920t.a(interrupts.o): In function `bad_mode':
/home/arm/u-boot-1.2.0/cpu/arm920t/interrupts.c:80: undefined reference to `reset_cpu'
lib_arm/libarm.a(board.o):(.data+0x8): undefined reference to `interrupt_init'
lib_arm/libarm.a(board.o):(.data+0x14): undefined reference to `serial_init'
net/libnet.a(net.o): In function `PingSend':
/home/arm/u-boot-1.2.0/net/net.c:743: undefined reference to `get_timer'
net/libnet.a(net.o): In function `NetSetTimeout':
/home/arm/u-boot-1.2.0/net/net.c:627: undefined reference to `get_timer'
net/libnet.a(net.o): In function `NetSendUDPPacket':
/home/arm/u-boot-1.2.0/net/net.c:672: undefined reference to `get_timer'
net/libnet.a(net.o): In function `ArpTimeoutCheck':
/home/arm/u-boot-1.2.0/net/net.c:246: undefined reference to `get_timer'
net/libnet.a(net.o): In function `NetLoop':
/home/arm/u-boot-1.2.0/net/net.c:507: undefined reference to `get_timer'
net/libnet.a(tftp.o):/home/arm/u-boot-1.2.0/net/tftp.c:372: more undefined references to `get_timer' follow
common/libcommon.a(main.o): In function `abortboot':
/home/arm/u-boot-1.2.0/common/main.c:269: undefined reference to `udelay'
common/libcommon.a(cmd_load.o): In function `do_load_serial_bin':
/home/arm/u-boot-1.2.0/common/cmd_load.c:469: undefined reference to `udelay'
/home/arm/u-boot-1.2.0/common/cmd_load.c:471: undefined reference to `serial_setbrg'
/home/arm/u-boot-1.2.0/common/cmd_load.c:472: undefined reference to `udelay'
common/libcommon.a(cmd_load.o): In function `load_serial_bin':
/home/arm/u-boot-1.2.0/common/cmd_load.c:548: undefined reference to `udelay'
common/libcommon.a(cmd_load.o): In function `do_load_serial_bin':
/home/arm/u-boot-1.2.0/common/cmd_load.c:507: undefined reference to `udelay'
/home/arm/u-boot-1.2.0/common/cmd_load.c:509: undefined reference to `serial_setbrg'
/home/arm/u-boot-1.2.0/common/cmd_load.c:510: undefined reference to `udelay'
common/libcommon.a(cmd_load.o): In function `load_serial':
/home/arm/u-boot-1.2.0/common/cmd_load.c:192: undefined reference to `udelay'
common/libcommon.a(cmd_load.o): In function `do_load_serial':
/home/arm/u-boot-1.2.0/common/cmd_load.c:115: undefined reference to `udelay'
common/libcommon.a(cmd_misc.o): In function `do_sleep':
/home/arm/u-boot-1.2.0/common/cmd_misc.c:34: undefined reference to `get_timer'
/home/arm/u-boot-1.2.0/common/cmd_misc.c:48: undefined reference to `udelay'
/home/arm/u-boot-1.2.0/common/cmd_misc.c:44: undefined reference to `get_timer'
common/libcommon.a(cmd_nvedit.o): In function `_do_setenv':
/home/arm/u-boot-1.2.0/common/cmd_nvedit.c:249: undefined reference to `udelay'
/home/arm/u-boot-1.2.0/common/cmd_nvedit.c:255: undefined reference to `serial_setbrg'
/home/arm/u-boot-1.2.0/common/cmd_nvedit.c:256: undefined reference to `udelay'
common/libcommon.a(console.o): In function `puts':
/home/arm/u-boot-1.2.0/common/console.c:213: undefined reference to `serial_puts'
common/libcommon.a(console.o): In function `serial_printf':
/home/arm/u-boot-1.2.0/common/console.c:112: undefined reference to `serial_puts'
common/libcommon.a(console.o): In function `putc':
/home/arm/u-boot-1.2.0/common/console.c:197: undefined reference to `serial_putc'
common/libcommon.a(console.o): In function `tstc':
/home/arm/u-boot-1.2.0/common/console.c:182: undefined reference to `serial_tstc'
common/libcommon.a(console.o): In function `getc':
/home/arm/u-boot-1.2.0/common/console.c:171: undefined reference to `serial_getc'
common/libcommon.a(devices.o): In function `devices_init':
/home/arm/u-boot-1.2.0/common/devices.c:209: undefined reference to `serial_putc'
/home/arm/u-boot-1.2.0/common/devices.c:209: undefined reference to `serial_puts'
/home/arm/u-boot-1.2.0/common/devices.c:209: undefined reference to `serial_getc'
/home/arm/u-boot-1.2.0/common/devices.c:209: undefined reference to `serial_tstc'
common/libcommon.a(exports.o): In function `jumptable_init':
/home/arm/u-boot-1.2.0/common/exports.c:39: undefined reference to `get_timer'
/home/arm/u-boot-1.2.0/common/exports.c:39: undefined reference to `udelay'
common/libcommon.a(xyzModem.o): In function `CYGACC_COMM_IF_GETC_TIMEOUT':
/home/arm/u-boot-1.2.0/common/xyzModem.c:110: undefined reference to `udelay'
common/libcommon.a(xyzModem.o): In function `xyzModem_stream_terminate':
/home/arm/u-boot-1.2.0/common/xyzModem.c:801: undefined reference to `udelay'
common/libcommon.a(xyzModem.o): In function `xyzModem_get_hdr':
/home/arm/u-boot-1.2.0/common/xyzModem.c:414: undefined reference to `udelay'
common/libcommon.a(xyzModem.o): In function `xyzModem_stream_open':
/home/arm/u-boot-1.2.0/common/xyzModem.c:598: undefined reference to `udelay'
lib_generic/libgeneric.a(vsprintf.o):/home/arm/u-boot-1.2.0/lib_generic/vsprintf.c:382: more undefined references to `udelay' follow
board/mini2440/libmini2440.a(flash.o): In function `write_hword':
/home/arm/u-boot-1.2.0/board/mini2440/flash.c:337: undefined reference to `reset_timer_masked'
/home/arm/u-boot-1.2.0/board/mini2440/flash.c:345: undefined reference to `get_timer_masked'
board/mini2440/libmini2440.a(flash.o): In function `flash_erase':
/home/arm/u-boot-1.2.0/board/mini2440/flash.c:228: undefined reference to `reset_timer_masked'
/home/arm/u-boot-1.2.0/board/mini2440/flash.c:248: undefined reference to `get_timer_masked'
/home/arm/u-boot-1.2.0/board/mini2440/flash.c:288: undefined reference to `udelay_masked'
cpu/arm920t/libarm920t.a(cpu.o): In function `do_reset':
/home/arm/u-boot-1.2.0/cpu/arm920t/cpu.c:132: undefined reference to `reset_cpu'
make: *** [u-boot] Error 1
[root@localhost u-boot-1.2.0]#
请问一下是什么问题啊，我想里面说没定义的都是c语言部分与体系无关的，移植一帮都不用修改的，我也没对他们进行修改，怎么就没定义了呢，奇怪！！请高手赐教！
