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
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
|
/*
* ***************************************************************************
* Copyright (C) 2016 Marvell International Ltd.
* ***************************************************************************
*
* 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 Marvell 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 <plat_def.h>
#include <debug.h>
#include <mmio.h>
#include <mvebu.h>
#include <plat_config.h>
#if LOG_LEVEL >= LOG_LEVEL_INFO
#define DEBUG_ADDR_MAP
#endif
/* common defines */
#define WIN_ENABLE_BIT (0x1)
#define AMB_WIN_CR_OFFSET(win) (amb_base + 0x0 + (0x8 * win))
#define AMB_ATTR_OFFSET 8
#define AMB_ATTR_MASK 0xFF
#define AMB_SIZE_OFFSET 16
#define AMB_SIZE_MASK 0xFF
#define AMB_WIN_BASE_OFFSET(win) (amb_base + 0x4 + (0x8 * win))
#define AMB_BASE_OFFSET 16
#define AMB_WIN_ALIGNMENT_64K (0x10000)
#define AMB_WIN_ALIGNMENT_1M (0x100000)
uintptr_t amb_base;
static void amb_check_win(struct amb_win *win, uint32_t win_num)
{
uint32_t alignment_value = AMB_WIN_ALIGNMENT_1M;
uint32_t base_addr = win->base_addr << AMB_BASE_OFFSET;
/* for AMB The base is always 1M aligned */
/* check if address is aligned to 1M */
if (IS_NOT_ALIGN(base_addr, alignment_value)) {
win->base_addr = ALIGN_UP(base_addr, alignment_value);
printf("Warning: Window %d: base address unaligned to 0x%x\n", win_num, alignment_value);
printf("Align up the base address to 0x%x\n", win->base_addr);
}
/* size parameter validity check */
if (!IS_POWER_OF_2(win->win_size)) {
printf("Warning: Window %d: window size is not power of 2 (0x%x)\n", win_num, win->win_size);
win->win_size = ROUND_UP_TO_POW_OF_2(win->win_size);
printf("Rounding size to 0x%x\n", win->win_size);
}
}
static void amb_enable_win(struct amb_win *win, uint32_t win_num)
{
uint32_t ctrl, base, size;
size = (win->win_size / AMB_WIN_ALIGNMENT_64K) - 1; /* size is 64KB granularity.
* The number of 1s specifies the size of the
* window in 64 KB granularity. 0 is 64KB */
ctrl = (size << AMB_SIZE_OFFSET) | (win->attribute << AMB_ATTR_OFFSET);
base = win->base_addr << AMB_BASE_OFFSET;
mmio_write_32(AMB_WIN_BASE_OFFSET(win_num), base);
mmio_write_32(AMB_WIN_CR_OFFSET(win_num), ctrl);
/* enable window after configuring window size (and attributes) */
ctrl |= WIN_ENABLE_BIT;
mmio_write_32(AMB_WIN_CR_OFFSET(win_num), ctrl);
}
#ifdef DEBUG_ADDR_MAP
static void dump_amb_adec(void)
{
uint32_t ctrl, base, win_id, attr;
uint32_t size, size_count;
/* Dump all AMB windows */
printf("bank attribute base size\n");
printf("--------------------------------------------\n");
for (win_id = 0; win_id < AMB_MAX_WIN_ID; win_id++) {
ctrl = mmio_read_32(AMB_WIN_CR_OFFSET(win_id));
if (ctrl & WIN_ENABLE_BIT) {
base = mmio_read_32(AMB_WIN_BASE_OFFSET(win_id));
attr = (ctrl >> AMB_ATTR_OFFSET) & AMB_ATTR_MASK;
size_count = (ctrl >> AMB_SIZE_OFFSET) & AMB_SIZE_MASK;
size = (size_count + 1) * AMB_WIN_ALIGNMENT_64K;
printf("amb 0x%04x 0x%08x 0x%08x\n", attr, base, size);
}
}
return;
}
#endif
int init_amb_adec(int cp_index)
{
struct amb_win *win;
uint32_t win_id, win_reg;
uint32_t win_count;
INFO("Initializing AXI to MBus Bridge Address decoding\n");
/* Get the base address of the AMB address decoding */
amb_base = marvell_get_amb_reg_offs(cp_index);
/* Get the array of the windows and its size */
marvell_get_amb_memory_map(&win, &win_count);
if (win_count <= 0)
INFO("no windows configurations found\n");
if (win_count > AMB_MAX_WIN_ID) {
INFO("number of windows is bigger than %d\n", AMB_MAX_WIN_ID);
return 0;
}
/* disable all AMB windows */
for (win_id = 0; win_id < AMB_MAX_WIN_ID; win_id++) {
win_reg = mmio_read_32(AMB_WIN_CR_OFFSET(win_id));
win_reg &= ~WIN_ENABLE_BIT;
mmio_write_32(AMB_WIN_CR_OFFSET(win_id), win_reg);
}
/* enable relevant windows */
for (win_id = 0; win_id < win_count; win_id++, win++) {
amb_check_win(win, win_id);
amb_enable_win(win, win_id);
}
#ifdef DEBUG_ADDR_MAP
dump_amb_adec();
#endif
INFO("Done AXI to MBus Bridge Address decoding Initializing\n");
return 0;
}
|
