xref: /openbmc/u-boot/doc/README.ne2000 (revision 8ed96046)
1*8ed96046SwdenkThis driver supports NE2000 compatible cards (those based on DP8390,
2*8ed96046SwdenkDP83902 and similar). It can be used with PCMCIA/CF cards provided
3*8ed96046Swdenkthat the CCR is correctly initialized.
4*8ed96046Swdenk
5*8ed96046SwdenkThe code is based on sources from the Linux kernel (pcnet_cs.c,
6*8ed96046Swdenk8390.h) and eCOS(if_dp83902a.c, if_dp83902a.h). Both of these 2
7*8ed96046Swdenkwonderful world are GPL, so this is, of course, GPL.
8*8ed96046Swdenk
9*8ed96046SwdenkI developed and tested this driver on a custom PXA255 based system and
10*8ed96046Swdenkwith a billionton CF network card connected to the PCMCIA interface of
11*8ed96046Swdenkthe micro (have a look at README.PXA_CF for the support of this port).
12*8ed96046Swdenk
13*8ed96046SwdenkThe options you have to specify in the config file are (with the
14*8ed96046Swdenkvalue for my board as an example):
15*8ed96046Swdenk
16*8ed96046Swdenk#define CONFIG_DRIVER_NE2000
17*8ed96046Swdenk
18*8ed96046Swdenk- Enables the driver
19*8ed96046Swdenk
20*8ed96046Swdenk#define CONFIG_DRIVER_NE2000_BASE (0x20000000+0x300)
21*8ed96046Swdenk
22*8ed96046Swdenk- Address where the board is mapped
23*8ed96046Swdenk
24*8ed96046Swdenk#define CONFIG_DRIVER_NE2000_CCR (0x28000000+0x3f8)
25*8ed96046Swdenk
26*8ed96046Swdenk- Address of the CCR (card configuration register). It could be found
27*8ed96046Swdenkby enabling DEBUG in cmd_pcmcia.c. If this is not defined nothing is
28*8ed96046Swdenkdone as far as PCMCIA support is concerned.
29*8ed96046Swdenk
30*8ed96046Swdenk#define CONFIG_DRIVER_NE2000_VAL (0x20)
31*8ed96046Swdenk
32*8ed96046Swdenk- The value to be written in the CCR. It selects among different I/O
33*8ed96046Swdenkspaces that could be used by the card.
34*8ed96046Swdenk
35*8ed96046Swdenk
36*8ed96046SwdenkEnjoy!
37*8ed96046Swdenk
38*8ed96046SwdenkChristian Pellegrin <chri@ascensit.com>
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