| 标题 | 阅读 | 评论 | 转发 | 发布日期 | |
|---|---|---|---|---|---|
| python intall module | 953 | 0 | 0 | 2009-12-30 | |
| cygwin | 688 | 0 | 0 | 2009-12-20 | |
| patch | 1465 | 0 | 0 | 2009-12-20 | |
| gcc参数 | 918 | 0 | 0 | 2009-12-14 | |
| struct.pack | 915 | 0 | 0 | 2009-12-09 | |
| 文件.pyc | 854 | 0 | 1 | 2009-12-09 | |
| Optionparser | 1488 | 0 | 0 | 2009-12-08 | |
| argv用法 | 789 | 0 | 0 | 2009-12-08 | |
| function decorate | 1965 | 0 | 0 | 2009-12-08 | |
| struct.unpack | 1223 | 0 | 0 | 2009-12-08 | |
| 动态库与静态库 | 951 | 0 | 0 | 2009-12-07 | |
| 压缩 | 468 | 0 | 0 | 2009-12-03 | |
| some detail | 741 | 0 | 0 | 2009-12-03 | |
| 异常和文件处理 | 622 | 0 | 0 | 2009-12-02 | |
| 对象和面向对象 | 703 | 0 | 0 | 2009-12-02 | |
| makefile传递宏定义方法 | 2635 | 0 | 0 | 2009-12-01 | |
| 自省的威力 | 677 | 0 | 0 | 2009-12-01 |
config20102009-11-19 20:15
外设fpga做的8k的memory，用arm9去读写它，在linux2.6系统下；这样做对吗？
实际地址映射到虚拟内存中，用得到的虚拟地址去读写。
地址总线：a1-a14 数据总线：d0-d15
#define FPGA_BASE_ADDR (0x18000000)//片选为nGCS3
#define BWSCON (0x48000000)
#define BANKCON3 (0x48000010)
#define IP_SIZE (0x1FFF)//13根地址线8K的物理空间
static void *bwscon,*bankcon3,*fpga_base_addr;
bwscon = ioremap_nocache(BWSCON,0x0000004);
bankcon3 = ioremap_nocache(BANKCON3,0x0000004);
fpga_base_addr = ioremap_nocache(FPGA_BASE_ADDR,IP_SIZE);
writel(readl(bwscon)|0xD000,bwscon);
writel(0x7FFC,bankcon3);
for(i=0;i
