1 /*
2 * Copyright 2014 Red Hat Inc.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
21 *
22 * Authors: Ben Skeggs <bskeggs@redhat.com>
23 */
24 #include <subdev/bios.h>
25 #include <subdev/bios/npde.h>
26 #include <subdev/bios/pcir.h>
27
28 u32
29 nvbios_npdeTe(struct nvkm_bios *bios, u32 base)
30 {
31 struct nvbios_pcirT pcir;
32 u8 ver; u16 hdr;
33 u32 data = nvbios_pcirTp(bios, base, &ver, &hdr, &pcir);
34 if (data = (data + hdr + 0x0f) & ~0x0f, data) {
35 switch (nvbios_rd32(bios, data + 0x00)) {
36 case 0x4544504e: /* NPDE */
37 break;
38 default:
39 nvkm_debug(&bios->subdev,
40 "%08x: NPDE signature (%08x) unknown\n",
41 data, nvbios_rd32(bios, data + 0x00));
42 data = 0;
43 break;
44 }
45 }
46 return data;
47 }
48
49 u32
50 nvbios_npdeTp(struct nvkm_bios *bios, u32 base, struct nvbios_npdeT *info)
51 {
52 u32 data = nvbios_npdeTe(bios, base);
53 memset(info, 0x00, sizeof(*info));
54 if (data) {
55 info->image_size = nvbios_rd16(bios, data + 0x08) * 512;
56 info->last = nvbios_rd08(bios, data + 0x0a) & 0x80;
57 }
58 return data;
59 }