| 标题 | 阅读 | 评论 | 转发 | 发布日期 | |
|---|---|---|---|---|---|
| linux cmd--aptitude | 918 | 0 | 0 | 2010-12-09 | |
| smbmount | 691 | 0 | 0 | 2010-11-19 | |
| 在Ubuntu上使用免费邮件平台Evolution | 658 | 0 | 0 | 2010-10-27 | |
| thunderbird 邮件保存位置 | 1437 | 1 | 0 | 2010-10-26 | |
| python2.5.2 install | 1008 | 1 | 0 | 2010-10-26 | |
| 10.0.4输入法安装 | 1297 | 0 | 0 | 2010-09-30 | |
| samba | 1460 | 0 | 0 | 2010-09-27 | |
| linux cmd--vbindiff | 1089 | 0 | 0 | 2010-08-11 | |
| 查看内存大小 | 1445 | 0 | 0 | 2010-07-28 | |
| 循环遍历位置参数 | 1247 | 0 | 0 | 2010-07-20 | |
| strace | 570 | 0 | 0 | 2010-07-02 | |
| dmesg | 1405 | 0 | 0 | 2010-07-02 | |
| linux cmd--nautilus | 1142 | 0 | 0 | 2010-06-29 | |
| linux host.allow host.deny | 671 | 0 | 0 | 2010-06-02 | |
| linux cmd--shutdown | 802 | 0 | 0 | 2010-06-01 | |
| suid guid | 1661 | 0 | 0 | 2010-06-01 | |
| show system status | 1078 | 0 | 0 | 2010-05-31 | |
| calc | 1455 | 0 | 0 | 2010-05-31 | |
| about time | 558 | 0 | 0 | 2010-05-31 | |
| 显式桌面 | 485 | 0 | 0 | 2010-05-26 |
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
