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
29u32
30nvbios_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
49u32
50nvbios_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
62u32
63nvbios_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
74bool
75nvbios_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