| 标题 | 阅读 | 评论 | 转发 | 发布日期 | |
|---|---|---|---|---|---|
| System.map | 737 | 0 | 0 | 2010-07-28 | |
| 内存管理 | 1137 | 0 | 0 | 2010-07-27 | |
| 内核简介 | 862 | 0 | 1 | 2010-07-26 | |
| android:layout_weight | 693 | 0 | 0 | 2010-07-26 | |
| Failure | 1659 | 0 | 0 | 2010-07-20 | |
| emulator | 1338 | 0 | 0 | 2010-07-20 | |
| 循环遍历位置参数 | 1284 | 0 | 0 | 2010-07-20 | |
| 嵌入 汇编 | 1216 | 0 | 0 | 2010-07-12 | |
| 得到进程返回值 | 1173 | 0 | 1 | 2010-07-08 | |
| 链接脚本 | 855 | 0 | 1 | 2010-07-05 | |
| ftok | 1103 | 0 | 1 | 2010-07-05 | |
| strace | 613 | 0 | 0 | 2010-07-02 | |
| my socket | 779 | 0 | 0 | 2010-07-02 | |
| errno | 1832 | 0 | 1 | 2010-07-02 | |
| dmesg | 1427 | 0 | 0 | 2010-07-02 | |
| setitimer | 972 | 0 | 1 | 2010-07-02 | |
| WIFEXITED WEXITSTATUS | 2224 | 0 | 0 | 2010-06-30 | |
| sscanf | 1325 | 0 | 0 | 2010-06-30 | |
| sprintf | 1670 | 0 | 0 | 2010-06-30 | |
| pthread_cond_wait | 881 | 0 | 0 | 2010-06-30 |
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
