1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
|
/*
* Copyright (c) 2016, ARM Limited and Contributors. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* Neither the name of ARM nor the names of its contributors may be used
* to endorse or promote products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <arch.h>
#include <arch_helpers.h>
#include <assert.h>
#include <debug.h>
#include <delay_timer.h>
#include <mmio.h>
#include <mt8173_def.h>
#include <mtk_sip_svc.h>
#define crypt_read32(offset) \
mmio_read_32((uintptr_t)(CRYPT_BASE+((offset) * 4)))
#define crypt_write32(offset, value) \
mmio_write_32((uintptr_t)(CRYPT_BASE + ((offset) * 4)), (uint32_t)value)
#define GET_L32(x) ((uint32_t)(x & 0xffffffff))
#define GET_H32(x) ((uint32_t)((x >> 32) & 0xffffffff))
#define REG_INIT 0
#define REG_MSC 4
#define REG_TRIG 256
#define REG_STAT 512
#define REG_CLR 513
#define REG_INT 514
#define REG_P68 768
#define REG_P69 769
#define REG_P70 770
#define REG_P71 771
#define REG_P72 772
#define REG_D20 820
#define KEY_SIZE 160
#define KEY_LEN 40
/* Wait until crypt is completed */
uint64_t crypt_wait(void)
{
crypt_write32(REG_TRIG, 0);
while (crypt_read32(REG_STAT) == 0)
;
udelay(100);
crypt_write32(REG_CLR, crypt_read32(REG_STAT));
crypt_write32(REG_INT, 0);
return MTK_SIP_E_SUCCESS;
}
static uint32_t record[4];
/* Copy encrypted key to crypt engine */
uint64_t crypt_set_hdcp_key_ex(uint64_t x1, uint64_t x2, uint64_t x3)
{
uint32_t i = (uint32_t)x1;
uint32_t j = 0;
if (i > KEY_LEN)
return MTK_SIP_E_INVALID_PARAM;
if (i < KEY_LEN) {
crypt_write32(REG_MSC, 0x80ff3800);
crypt_write32(REG_INIT, 0);
crypt_write32(REG_INIT, 0xF);
crypt_write32(REG_CLR, 1);
crypt_write32(REG_INT, 0);
crypt_write32(REG_P68, 0x70);
crypt_write32(REG_P69, 0x1C0);
crypt_write32(REG_P70, 0x30);
crypt_write32(REG_P71, 0x4);
crypt_wait();
crypt_write32(REG_D20 + 4 * i, GET_L32(x2));
crypt_write32(REG_D20 + 4 * i + 1, GET_H32(x2));
crypt_write32(REG_D20 + 4 * i + 2, GET_L32(x3));
crypt_write32(REG_D20 + 4 * i + 3, GET_H32(x3));
crypt_write32(REG_P69, 0);
crypt_write32(REG_P68, 0x20);
crypt_write32(REG_P71, 0x34 + 4 * i);
crypt_write32(REG_P72, 0x34 + 4 * i);
crypt_wait();
for (j = 0; j < 4; j++) {
crypt_write32(REG_P68, 0x71);
crypt_write32(REG_P69, 0x34 + 4 * i + j);
crypt_write32(REG_P70, record[j]);
crypt_wait();
}
}
/* Prepare data for next iteration */
record[0] = GET_L32(x2);
record[1] = GET_H32(x2);
record[2] = GET_L32(x3);
record[3] = GET_H32(x3);
return MTK_SIP_E_SUCCESS;
}
/* Set key to hdcp */
uint64_t crypt_set_hdcp_key_num(uint32_t num)
{
if (num > KEY_LEN)
return MTK_SIP_E_INVALID_PARAM;
crypt_write32(REG_P68, 0x6A);
crypt_write32(REG_P69, 0x34 + 4 * num);
crypt_wait();
return MTK_SIP_E_SUCCESS;
}
/* Clear key in crypt engine */
uint64_t crypt_clear_hdcp_key(void)
{
uint32_t i;
for (i = 0; i < KEY_SIZE; i++)
crypt_write32(REG_D20 + i, 0);
return MTK_SIP_E_SUCCESS;
}
|
