标题 | 阅读 | 评论 | 转发 | 发布日期 | |
---|---|---|---|---|---|
smbmount | 683 | 0 | 0 | 2010-11-19 | |
BMP form picture | 670 | 0 | 0 | 2010-11-17 | |
在Ubuntu上使用免费邮件平台Evolution | 652 | 0 | 0 | 2010-10-27 | |
thunderbird 邮件保存位置 | 1428 | 1 | 0 | 2010-10-26 | |
python2.5.2 install | 1002 | 1 | 0 | 2010-10-26 | |
10.0.4输入法安装 | 1291 | 0 | 0 | 2010-09-30 | |
samba | 1454 | 0 | 0 | 2010-09-27 | |
emacs cscope | 796 | 1 | 0 | 2010-09-25 | |
ido-mode | 1678 | 0 | 0 | 2010-09-21 | |
emacs configuration | 1524 | 1 | 0 | 2010-09-21 | |
emacs set character | 854 | 1 | 0 | 2010-09-21 | |
打开emacs | 606 | 1 | 0 | 2010-09-13 | |
emacs shortcut | 1010 | 1 | 0 | 2010-09-02 | |
Makefile 生成动态库和静态库 | 3255 | 0 | 1 | 2010-08-17 | |
linux cmd--vbindiff | 1063 | 0 | 0 | 2010-08-11 | |
进程地址空间 | 1032 | 0 | 0 | 2010-07-30 | |
vmalloc kmalloc malloc | 1658 | 0 | 0 | 2010-07-30 | |
物理内存的管理 | 979 | 0 | 0 | 2010-07-29 | |
启动过程期间内存管理 | 1785 | 0 | 0 | 2010-07-29 | |
查看内存大小 | 1439 | 0 | 0 | 2010-07-28 |
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