6410 clock divider structure 及 编译问题

clock structure to generate ARMCLK, HCLKX2, and HCLK. clock divider

consists of two parts

pre-dividers

and

post divers.

there are two pre-dividers to divide by 2 and 5

which are fixed and not software configurable.

 

the post-deviders can be configured by software using CLK_DIV0 register.

266

667

 

一句经典名言: 在IT行业，遇到问题，只要一直解决，总有解决的一天。

arm-linux-ld -Bstatic -e _start -Ttext 0x50000000  inter.o inter_func.o /home/km/arm/4_3_2_noconfig/lib/gcc/arm-none-linux-gnueabi/4.3.2/libgcc.a -o inter
/home/km/arm/4_3_2_noconfig/lib/gcc/arm-none-linux-gnueabi/4.3.2/libgcc.a(_dvmd_lnx.o): In function `__aeabi_ldiv0':
(.text+0x8): undefined reference to `raise

没有div指令 除法指令

库的位置有关系

int raise( int signum )
{
    return 0;
}

在编译

arm-linux-gcc -c inter.s -o inter.o    
arm-linux-gcc -c inter_func.c -o inter_func.o
arm-linux-ld -Bstatic -e _start -Ttext 0x50000000  inter.o inter_func.o /home/km/arm/4_3_2_noconfig/lib/gcc/arm-none-linux-gnueabi/4.3.2/libgcc.a -o inter
arm-linux-objcopy       -O binary inter inter.bin
arm-linux-objdump -D inter > inter.dis

应该是库的关系有点问题， 也可能是连接顺序不对