source: trunk/packages/xen-3.1/xen-3.1/xen/arch/powerpc/of_handler/vdevice.c @ 34

Last change on this file since 34 was 34, checked in by hartmans, 18 years ago

Add xen and xen-common

File size: 2.2 KB
Line 
1/*
2 * This program is free software; you can redistribute it and/or modify
3 * it under the terms of the GNU General Public License as published by
4 * the Free Software Foundation; either version 2 of the License, or
5 * (at your option) any later version.
6 *
7 * This program is distributed in the hope that it will be useful,
8 * but WITHOUT ANY WARRANTY; without even the implied warranty of
9 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
10 * GNU General Public License for more details.
11 *
12 * You should have received a copy of the GNU General Public License
13 * along with this program; if not, write to the Free Software
14 * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
15 *
16 * Copyright (C) IBM Corp. 2005
17 *
18 * Authors: Jimi Xenidis <jimix@watson.ibm.com>
19 */
20
21#include "ofh.h"
22
23static struct ofh_ihandle _ih_cons;
24
25void
26ofh_vty_init(ofdn_t chosen, ulong b)
27{
28    void *mem = ofd_mem(b);
29    u32 ih = DRELA((u32)&_ih_cons, b);
30    struct ofh_ihandle *ihp = (struct ofh_ihandle *)((ulong)ih);
31    ofdn_t n = 0;
32    s32 ret;
33    u32 chan = OFH_CONS_XEN;
34
35    ihp->ofi_intf = NULL;
36
37    /* find the vty */
38    n = ofd_node_find(mem,
39                        DRELA((const char *)"/vdevice/vty", b));
40    if (n > 0) {
41        /* PAPR VTERM */
42        ret = ofd_getprop(mem, n, DRELA((const char *)"reg", b),
43                          &chan, sizeof (chan));
44        if (ret != (s32)sizeof (chan)) {
45            chan = 0;
46        }
47    } else {
48        /* xen console */
49        u32 addr;
50
51        n = ofd_node_find(mem, DRELA((const char *)"/xen/console", b));
52        if (n > 0) {
53            ret = ofd_getprop(mem, n, DRELA((const char *)"reg", b),
54                              &addr, sizeof (addr));
55            if (addr == 0) {
56                ihp->ofi_intf = NULL;
57            } else {
58                ihp->ofi_intf = (struct xencons_interface *)(ulong)addr;
59            }
60        }
61    }
62    if (n > 0) {
63        ihp->ofi_node = n;
64    }
65    ihp->ofi_chan = chan;
66    ofh_cons_init(ihp, b);
67
68    ofd_prop_add(mem, chosen, DRELA((const char *)"stdout", b),
69                 &ih, sizeof (ih));
70    ofd_prop_add(mem, chosen, DRELA((const char *)"stdin", b),
71                 &ih, sizeof (ih));
72}
73
74
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