blob: d490736fa43c04362a40567c362688b33f2280a2 (
plain)
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
|
/*
* Copyright (C) 2011-2015 Masahiro Yamada <yamada.masahiro@socionext.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <linux/err.h>
#include <linux/io.h>
#include <linux/sizes.h>
#include <mach/init.h>
#include <mach/sg-regs.h>
int memconf_init(const struct uniphier_board_data *bd)
{
u32 tmp = 0;
unsigned long size_per_word;
tmp = readl(SG_MEMCONF);
tmp &= ~(SG_MEMCONF_CH0_SZ_MASK | SG_MEMCONF_CH0_NUM_MASK);
switch (bd->dram_ch0_width) {
case 16:
tmp |= SG_MEMCONF_CH0_NUM_1;
size_per_word = bd->dram_ch0_size;
break;
case 32:
tmp |= SG_MEMCONF_CH0_NUM_2;
size_per_word = bd->dram_ch0_size >> 1;
break;
default:
pr_err("error: unsupported DRAM Ch0 width\n");
return -EINVAL;
}
/* Set DDR size */
switch (size_per_word) {
case SZ_64M:
tmp |= SG_MEMCONF_CH0_SZ_64M;
break;
case SZ_128M:
tmp |= SG_MEMCONF_CH0_SZ_128M;
break;
case SZ_256M:
tmp |= SG_MEMCONF_CH0_SZ_256M;
break;
case SZ_512M:
tmp |= SG_MEMCONF_CH0_SZ_512M;
break;
case SZ_1G:
tmp |= SG_MEMCONF_CH0_SZ_1G;
break;
default:
pr_err("error: unsupported DRAM Ch0 size\n");
return -EINVAL;
}
tmp &= ~(SG_MEMCONF_CH1_SZ_MASK | SG_MEMCONF_CH1_NUM_MASK);
switch (bd->dram_ch1_width) {
case 16:
tmp |= SG_MEMCONF_CH1_NUM_1;
size_per_word = bd->dram_ch1_size;
break;
case 32:
tmp |= SG_MEMCONF_CH1_NUM_2;
size_per_word = bd->dram_ch1_size >> 1;
break;
default:
pr_err("error: unsupported DRAM Ch1 width\n");
return -EINVAL;
}
switch (size_per_word) {
case SZ_64M:
tmp |= SG_MEMCONF_CH1_SZ_64M;
break;
case SZ_128M:
tmp |= SG_MEMCONF_CH1_SZ_128M;
break;
case SZ_256M:
tmp |= SG_MEMCONF_CH1_SZ_256M;
break;
case SZ_512M:
tmp |= SG_MEMCONF_CH1_SZ_512M;
break;
case SZ_1G:
tmp |= SG_MEMCONF_CH1_SZ_1G;
break;
default:
pr_err("error: unsupported DRAM Ch1 size\n");
return -EINVAL;
}
if (bd->dram_ch0_base + bd->dram_ch0_size < bd->dram_ch1_base)
tmp |= SG_MEMCONF_SPARSEMEM;
else
tmp &= ~SG_MEMCONF_SPARSEMEM;
writel(tmp, SG_MEMCONF);
return 0;
}
|
