| 标题 | 阅读 | 评论 | 转发 | 发布日期 | |
|---|---|---|---|---|---|
| tftp | 1442 | 0 | 0 | 2010-12-24 | |
| qq config | 1591 | 0 | 0 | 2010-12-17 | |
| git | 1486 | 0 | 0 | 2010-12-17 | |
| __attribute__ | 1647 | 0 | 1 | 2010-12-14 | |
| search | 1397 | 0 | 1 | 2010-12-12 | |
| arithmeic | 886 | 0 | 0 | 2010-12-12 | |
| linux cmd--aptitude | 955 | 0 | 0 | 2010-12-09 | |
| RLE格式解压 | 1652 | 0 | 0 | 2010-11-24 | |
| emacs color-theme | 1329 | 0 | 0 | 2010-11-23 | |
| smbmount | 730 | 0 | 0 | 2010-11-19 | |
| BMP form picture | 743 | 0 | 0 | 2010-11-17 | |
| 在Ubuntu上使用免费邮件平台Evolution | 683 | 0 | 0 | 2010-10-27 | |
| thunderbird 邮件保存位置 | 1616 | 1 | 0 | 2010-10-26 | |
| python2.5.2 install | 1065 | 1 | 0 | 2010-10-26 | |
| 10.0.4输入法安装 | 1344 | 0 | 0 | 2010-09-30 | |
| samba | 1501 | 0 | 0 | 2010-09-27 | |
| emacs cscope | 880 | 1 | 0 | 2010-09-25 | |
| ido-mode | 1739 | 0 | 0 | 2010-09-21 | |
| emacs configuration | 1706 | 1 | 0 | 2010-09-21 | |
| emacs set character | 969 | 1 | 0 | 2010-09-21 |
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
