标题 | 阅读 | 评论 | 转发 | 发布日期 | |
---|---|---|---|---|---|
Booting ARM Linux | 1635 | 0 | 0 | 2009-10-21 | |
vivi分析-NandFlash的操作-3 | 954 | 0 | 0 | 2009-10-20 | |
vivi分析-NandFlash的操作(mtd&&bon)-2 | 1854 | 0 | 0 | 2009-10-16 | |
vivi分析-NandFlash的操作(mtd&&bon)-1 | 1518 | 0 | 0 | 2009-10-15 | |
vivi分析-参数初始化 | 1199 | 0 | 0 | 2009-10-15 | |
vivi分析-command的添加与执行 | 1768 | 0 | 0 | 2009-10-14 | |
vivi分析-main.c中打印信息 putstr | 2336 | 0 | 0 | 2009-09-24 | |
vivi分析-head.S->main.c | 1834 | 0 | 0 | 2009-09-23 | |
vivi分析-memtest | 1262 | 2 | 0 | 2009-09-21 | |
vivi分析-sdram的初始化 | 1209 | 0 | 0 | 2009-09-21 | |
code工具学习-gcc | 1145 | 0 | 0 | 2009-09-21 | |
ARM 汇编 -- b & bl | 3296 | 0 | 0 | 2009-09-18 | |
ARM 汇编的mov操作立即数的疑问 | 11690 | 2 | 9 | 2009-09-18 | |
Options Controlling the Kind of Output | 1081 | 0 | 0 | 2009-09-17 | |
数组访问越界 | 6262 | 0 | 1 | 2009-08-05 | |
C 除数为0 | 2221 | 0 | 0 | 2009-07-29 | |
数学计算 | 3161 | 0 | 0 | 2009-07-22 | |
ctype.h | 998 | 0 | 0 | 2009-07-20 | |
fedora11中的ibus五笔输入法 | 2629 | 0 | 0 | 2009-06-15 | |
VIM 配置文件 | 1272 | 0 | 0 | 2009-05-25 |
config20102009-11-19 19:42
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