xref: /OK3568_Linux_fs/u-boot/doc/README.ne2000 (revision 4882a59341e53eb6f0b4789bf948001014eff981)
1*4882a593SmuzhiyunThis driver supports NE2000 compatible cards (those based on DP8390,
2*4882a593SmuzhiyunDP83902 and similar). It can be used with PCMCIA/CF cards provided
3*4882a593Smuzhiyunthat the CCR is correctly initialized.
4*4882a593Smuzhiyun
5*4882a593SmuzhiyunThe code is based on sources from the Linux kernel (pcnet_cs.c,
6*4882a593Smuzhiyun8390.h) and eCOS(if_dp83902a.c, if_dp83902a.h). Both of these 2
7*4882a593Smuzhiyunwonderful world are GPL, so this is, of course, GPL.
8*4882a593Smuzhiyun
9*4882a593SmuzhiyunI developed and tested this driver on a custom PXA255 based system and
10*4882a593Smuzhiyunwith a billionton CF network card connected to the PCMCIA interface of
11*4882a593Smuzhiyunthe micro (have a look at README.PXA_CF for the support of this port).
12*4882a593Smuzhiyun
13*4882a593SmuzhiyunThe options you have to specify in the config file are (with the
14*4882a593Smuzhiyunvalue for my board as an example):
15*4882a593Smuzhiyun
16*4882a593Smuzhiyun#define CONFIG_DRIVER_NE2000
17*4882a593Smuzhiyun
18*4882a593Smuzhiyun- Enables the driver
19*4882a593Smuzhiyun
20*4882a593Smuzhiyun#define CONFIG_DRIVER_NE2000_BASE (0x20000000+0x300)
21*4882a593Smuzhiyun
22*4882a593Smuzhiyun- Address where the board is mapped
23*4882a593Smuzhiyun
24*4882a593Smuzhiyun#define CONFIG_DRIVER_NE2000_CCR (0x28000000+0x3f8)
25*4882a593Smuzhiyun
26*4882a593Smuzhiyun- Address of the CCR (card configuration register). It could be found
27*4882a593Smuzhiyunby enabling DEBUG in cmd_pcmcia.c. If this is not defined nothing is
28*4882a593Smuzhiyundone as far as PCMCIA support is concerned.
29*4882a593Smuzhiyun
30*4882a593Smuzhiyun#define CONFIG_DRIVER_NE2000_VAL (0x20)
31*4882a593Smuzhiyun
32*4882a593Smuzhiyun- The value to be written in the CCR. It selects among different I/O
33*4882a593Smuzhiyunspaces that could be used by the card.
34*4882a593Smuzhiyun
35*4882a593Smuzhiyun
36*4882a593SmuzhiyunEnjoy!
37*4882a593Smuzhiyun
38*4882a593SmuzhiyunChristian Pellegrin <chri@ascensit.com>
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