请教：armlinux编译过程中遇到的问题

liaowg

最终链接的时候报告有些函数找不到，如下
有没有遇到这个问题的。

我完全按照陈渝他们那本书上的步骤来的，版本是Linux kernel 2.4.18-rmk7

cross 2.95.3

/usr/local/arm/2.95.3/bin/arm-linux-ld -p -X -T arch/arm/vmlinux.lds arch/arm/ker
nel/head-armv.o arch/arm/kernel/init_task.o init/main.o init/version.o \
        --start-group \
        arch/arm/kernel/kernel.o arch/arm/mm/mm.o arch/arm/mach-clps711x/clps711x
.o kernel/kernel.o mm/mm.o fs/fs.o ipc/ipc.o \
         drivers/serial/serial.o drivers/char/char.o drivers/block/block.o driver
s/misc/misc.o drivers/net/net.o drivers/media/media.o drivers/mtd/mtdlink.o drive
rs/video/video.o \
        net/network.o \
        arch/arm/lib/lib.a /home/liao/armlinux/linux/lib/lib.a \
        --end-group \
        -o vmlinux
drivers/char/char.o: In function `vt_ioctl':
drivers/char/char.o(.text+0xa59: undefined reference to `key_maps'
drivers/char/char.o(.text+0xa924): undefined reference to `key_maps'
drivers/char/char.o(.text+0xa92c): undefined reference to `keymap_count'
drivers/char/char.o(.text+0xa94: undefined reference to `func_table'
drivers/char/char.o(.text+0xa950): undefined reference to `funcbufleft'
drivers/char/char.o(.text+0xa954): undefined reference to `funcbufsize'
drivers/char/char.o(.text+0xa95: undefined reference to `funcbufptr'
drivers/char/char.o(.text+0xad4c): undefined reference to `func_table'
drivers/char/char.o(.text+0xad50): undefined reference to `funcbufsize'
drivers/char/char.o(.text+0xad54): undefined reference to `funcbufptr'
drivers/char/char.o(.text+0xad5: undefined reference to `func_buf'
drivers/char/char.o(.text+0xad5c): undefined reference to `funcbufleft'
drivers/char/char.o(.text+0xad60): undefined reference to `accent_table_size'
drivers/char/char.o(.text+0xad64): undefined reference to `accent_table'
drivers/char/char.o: In function `kbd_processkeycode':
drivers/char/char.o(.text+0x13cd0): undefined reference to `key_maps'
drivers/char/char.o: In function `handle_diacr':
drivers/char/char.o(.text+0x1446c): undefined reference to `accent_table_size'
drivers/char/char.o(.text+0x14470): undefined reference to `accent_table'
drivers/char/char.o: In function `do_fn':
drivers/char/char.o(.text+0x144c4): undefined reference to `func_table'
drivers/char/char.o: In function `compute_shiftstate':
drivers/char/char.o(.text+0x1488: undefined reference to `key_maps'
drivers/char/char.o: In function `do_slock':
drivers/char/char.o(.text+0x14a0: undefined reference to `key_maps'
make: *** [vmlinux] Error 1
[liao@fc3 linux]$ cd drivers

liaowg

偶发现网上下载的代码在编译CLEP7312时初始配置可能有问题，字符部分的Makefile文件不对，总是没有key_maps，修改了一下，OK了。

后来编译Busybox的时候发现armlinux交叉编译的版本又不行，真是不幸。

把所有的东东搞定后启动，结果kernel执行死机，

没办法，gdb

发现

在 calibrate_delay 时挂起，应该是时钟中断没有搞好，好麻烦啦，最近太忙，没时间玩，有没有人一起看看

void __init calibrate_delay(void)
{
        unsigned long ticks, loopbit;
        int lps_precision = LPS_PREC;

        loops_per_jiffy = (1<<12);

        printk("Calibrating delay loop... ");
        while (loops_per_jiffy <<= 1) {
                /* wait for "start of" clock tick */
                ticks = jiffies;
                while (ticks == jiffies)
                        /* nothing */;
                /* Go .. */
                ticks = jiffies;
                __delay(loops_per_jiffy);
                ticks = jiffies - ticks;
                if (ticks)
                        break;
        }

/* Do a binary approximation to get loops_per_jiffy set to equal one clock
   (up to lps_precision bits) */
        loops_per_jiffy >>= 1;
        loopbit = loops_per_jiffy;
        while ( lps_precision-- && (loopbit >>= 1) ) {
                loops_per_jiffy |= loopbit;
                ticks = jiffies;
                while (ticks == jiffies);
                ticks = jiffies;
                __delay(loops_per_jiffy);
                if (jiffies != ticks)        /* longer than 1 tick */
                        loops_per_jiffy &= ~loopbit;
        }

/* Round the value and print it */       
        printk("%lu.%02lu BogoMIPS\n",
                loops_per_jiffy/(500000/HZ),
                (loops_per_jiffy/(5000/HZ)) % 100);
}

liaowg

现在kernel运行起来了

出现了新的问题，挂不上root filesystem


NET4: Linux TCP/IP 1.0 for NET4.0
IP Protocols: ICMP, UDP, TCP
IP: routing cache hash table of 512 buckets, 4Kbytes
TCP: Hash tables configured (established 1024 bind 1024)
NET4: Unix domain sockets 1.0/SMP for Linux NET4.0.
Root-NFS: No NFS server available, giving up.
VFS: Unable to mount root fs via NFS, trying floppy.
VFS: Cannot open root device "" or 02:00
Please append a correct "root=" boot option
Kernel panic: VFS: Unable to mount root fs on 02:00