全部博文(92)
标题 | 阅读 | 评论 | 转发 | 发布日期 | |
---|---|---|---|---|---|
Transplanting CS8900A Ethernet driver | 1305 | 0 | 0 | 2009-09-22 | |
Building root file system_2 | 1443 | 0 | 0 | 2009-09-22 | |
HCI API for local Dongle | 2189 | 0 | 0 | 2009-09-19 | |
The HCI API for Remote Device | 2181 | 0 | 0 | 2009-09-19 | |
Taking insight into HCI | 2014 | 0 | 0 | 2009-09-18 | |
The application of socket API on Rfcomm | 1600 | 0 | 0 | 2009-09-17 | |
Building root file system_1 | 1018 | 0 | 0 | 2009-09-16 | |
The application of socket API on L2cap | 3306 | 0 | 0 | 2009-09-16 | |
Using crosstool to build cross tool chain | 1803 | 1 | 0 | 2009-09-15 | |
Linux Socket API | 1347 | 0 | 0 | 2009-09-15 | |
Bluetooth Structure | 3183 | 0 | 0 | 2009-09-14 | |
usage of function pointer | 1021 | 0 | 0 | 2009-09-02 | |
dynamic memory heap and stack | 1134 | 0 | 0 | 2009-09-02 | |
C language extensions library function | 1105 | 0 | 0 | 2009-09-02 | |
c language standard library function | 1028 | 0 | 0 | 2009-09-02 | |
inter-process communication | 1792 | 0 | 0 | 2009-08-24 | |
Process and Process Scheduling | 1076 | 0 | 0 | 2009-08-24 | |
Linux standard I/O flow | 1008 | 0 | 0 | 2009-08-23 | |
linux system calls | 1114 | 0 | 0 | 2009-08-22 | |
Loadable Modules | 1095 | 0 | 0 | 2009-08-21 |
config20102009-11-19 20:21
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