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/bit.h>
26 #include <subdev/bios/image.h>
27 #include <subdev/bios/pmu.h>
28
29 u32
nvbios_pmuTe(struct nvkm_bios * bios,u8 * ver,u8 * hdr,u8 * cnt,u8 * len)30 nvbios_pmuTe(struct nvkm_bios *bios, u8 *ver, u8 *hdr, u8 *cnt, u8 *len)
31 {
32 struct bit_entry bit_p;
33 u32 data = 0;
34
35 if (!bit_entry(bios, 'p', &bit_p)) {
36 if (bit_p.version == 2 && bit_p.length >= 4)
37 data = nvbios_rd32(bios, bit_p.offset + 0x00);
38 if (data) {
39 *ver = nvbios_rd08(bios, data + 0x00); /* maybe? */
40 *hdr = nvbios_rd08(bios, data + 0x01);
41 *len = nvbios_rd08(bios, data + 0x02);
42 *cnt = nvbios_rd08(bios, data + 0x03);
43 }
44 }
45
46 return data;
47 }
48
49 u32
nvbios_pmuEe(struct nvkm_bios * bios,int idx,u8 * ver,u8 * hdr)50 nvbios_pmuEe(struct nvkm_bios *bios, int idx, u8 *ver, u8 *hdr)
51 {
52 u8 cnt, len;
53 u32 data = nvbios_pmuTe(bios, ver, hdr, &cnt, &len);
54 if (data && idx < cnt) {
55 data = data + *hdr + (idx * len);
56 *hdr = len;
57 return data;
58 }
59 return 0;
60 }
61
62 u32
nvbios_pmuEp(struct nvkm_bios * bios,int idx,u8 * ver,u8 * hdr,struct nvbios_pmuE * info)63 nvbios_pmuEp(struct nvkm_bios *bios, int idx, u8 *ver, u8 *hdr,
64 struct nvbios_pmuE *info)
65 {
66 u32 data = nvbios_pmuEe(bios, idx, ver, hdr);
67 if (data) {
68 info->type = nvbios_rd08(bios, data + 0x00);
69 info->data = nvbios_rd32(bios, data + 0x02);
70 }
71 return data;
72 }
73
74 bool
nvbios_pmuRm(struct nvkm_bios * bios,u8 type,struct nvbios_pmuR * info)75 nvbios_pmuRm(struct nvkm_bios *bios, u8 type, struct nvbios_pmuR *info)
76 {
77 struct nvbios_pmuE pmuE;
78 u8 ver, hdr, idx = 0;
79 u32 data;
80 memset(info, 0x00, sizeof(*info));
81 while ((data = nvbios_pmuEp(bios, idx++, &ver, &hdr, &pmuE))) {
82 if (pmuE.type == type && (data = pmuE.data)) {
83 info->init_addr_pmu = nvbios_rd32(bios, data + 0x08);
84 info->args_addr_pmu = nvbios_rd32(bios, data + 0x0c);
85 info->boot_addr = data + 0x30;
86 info->boot_addr_pmu = nvbios_rd32(bios, data + 0x10) +
87 nvbios_rd32(bios, data + 0x18);
88 info->boot_size = nvbios_rd32(bios, data + 0x1c) -
89 nvbios_rd32(bios, data + 0x18);
90 info->code_addr = info->boot_addr + info->boot_size;
91 info->code_addr_pmu = info->boot_addr_pmu +
92 info->boot_size;
93 info->code_size = nvbios_rd32(bios, data + 0x20);
94 info->data_addr = data + 0x30 +
95 nvbios_rd32(bios, data + 0x24);
96 info->data_addr_pmu = nvbios_rd32(bios, data + 0x28);
97 info->data_size = nvbios_rd32(bios, data + 0x2c);
98 return true;
99 }
100 }
101 return false;
102 }
103