| 标题 | 阅读 | 评论 | 转发 | 发布日期 | |
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| linux host.allow host.deny | 699 | 0 | 0 | 2010-06-02 | |
| linux cmd--shutdown | 820 | 0 | 0 | 2010-06-01 | |
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| show system status | 1120 | 0 | 0 | 2010-05-31 | |
| calc | 1491 | 0 | 0 | 2010-05-31 | |
| about time | 577 | 0 | 0 | 2010-05-31 | |
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| ssh | 765 | 0 | 1 | 2010-05-20 | |
| linux cmd--scp | 686 | 0 | 0 | 2010-05-20 | |
| MACHINE_START宏 | 565 | 0 | 0 | 2010-05-19 | |
| 下半部和推后执行的工作 | 518 | 0 | 0 | 2010-05-06 | |
| 中断和中断处理程序 | 1516 | 0 | 0 | 2010-05-05 | |
| socketpair | 812 | 0 | 1 | 2010-04-30 | |
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| 用UtraISO制作光盘镜像 | 827 | 0 | 0 | 2010-04-26 |
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
