ucos+uboot

glqg

上面已经成功将u-boot移动到s3c44b0上，但板上带的ucos由于使用的是中断方式，所以，在uboot上就不能正常运行，所以，要修改uboot的二级跳转表来实现，在ucos工程中增加一个修改过程。代码如下
void ChangeUbootInt(void)
{
 unsigned int address;
//这里是最原始的使用u-boot的中断向量表时的偏移计算
 //address = 0xea000000 + ((0x0c008008 - 0x0c000010 - 0x08) >> 2);
 /**((volatile unsigned*)0x0c000004) = address;
 *((volatile unsigned*)0x0c000008) = address;
 *((volatile unsigned*)0x0c00000c) = address;
 *((volatile unsigned*)0x0c000010) = address;
         *((volatile unsigned*)0x0c000018) = address;
 *((volatile unsigned*)0x0c00001c) = address;
 *((volatile unsigned*)0x0c000020) = address;
 *((volatile unsigned*)0x0c000024) = address;*/
//这里是针对uclinux修改u-boot中断向量后的偏移计算
 address = 0xea000000 + ((0x0c008008 - 0x0c000008 - 0x08) >> 2);;
 *((volatile unsigned*)0x0c000004) = address;
 *((volatile unsigned*)0x0c000008) = address;
         *((volatile unsigned*)0x0c00000c) = address;
 *((volatile unsigned*)0x0c000010) = address;
         *((volatile unsigned*)0x0c000018) = address;
 *((volatile unsigned*)0x0c00001c) = address;
 *((volatile unsigned*)0x0c000020) = address;
 *((volatile unsigned*)0x0c000024) = address;
}
，增加后，uclinux和ucos都可以正常运行，花了我一个星期的时间

,下一步，开始研究uclinux移植


本文来自ChinaUnix博客，如果查看原文请点：http://blog.chinaunix.net/u2/66822/showart_548210.html