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gerrit.cesnet.cz / github / trini / u-boot / 6d7a33301a05472bc788415c1d1575041e478931 / . / arch / arm / mach-uniphier / memconf.c
blob: 59ed0b5dd8f4dc7c2a662da2ed6b67087c309863 [file] [log] [blame]
Masahiro Yamada6cc21202015-02-27 02:27:04 +0900[diff] [blame]1/*
Masahiro Yamadaf6e7f072015-05-29 17:30:00 +0900[diff] [blame]2 * Copyright (C) 2011-2015 Masahiro Yamada <yamada.masahiro@socionext.com>
Masahiro Yamada6cc21202015-02-27 02:27:04 +0900[diff] [blame]3 *
4 * SPDX-License-Identifier: GPL-2.0+
5 */
6
7#include <common.h>
8#include <linux/sizes.h>
Masahiro Yamadaf6e7f072015-05-29 17:30:00 +0900[diff] [blame]9#include <linux/io.h>
Masahiro Yamada6cc21202015-02-27 02:27:04 +0900[diff] [blame]10#include <mach/sg-regs.h>
11
12static inline u32 sg_memconf_val_ch0(unsigned long size, int num)
13{
14 int size_mb = size / num;
15 u32 ret;
16
17 switch (size_mb) {
18 case SZ_64M:
19 ret = SG_MEMCONF_CH0_SZ_64M;
20 break;
21 case SZ_128M:
22 ret = SG_MEMCONF_CH0_SZ_128M;
23 break;
24 case SZ_256M:
25 ret = SG_MEMCONF_CH0_SZ_256M;
26 break;
27 case SZ_512M:
28 ret = SG_MEMCONF_CH0_SZ_512M;
29 break;
30 case SZ_1G:
31 ret = SG_MEMCONF_CH0_SZ_1G;
32 break;
33 default:
34 BUG();
35 break;
36 }
37
38 switch (num) {
39 case 1:
40 ret |= SG_MEMCONF_CH0_NUM_1;
41 break;
42 case 2:
43 ret |= SG_MEMCONF_CH0_NUM_2;
44 break;
45 default:
46 BUG();
47 break;
48 }
49 return ret;
50}
51
52static inline u32 sg_memconf_val_ch1(unsigned long size, int num)
53{
54 int size_mb = size / num;
55 u32 ret;
56
57 switch (size_mb) {
58 case SZ_64M:
59 ret = SG_MEMCONF_CH1_SZ_64M;
60 break;
61 case SZ_128M:
62 ret = SG_MEMCONF_CH1_SZ_128M;
63 break;
64 case SZ_256M:
65 ret = SG_MEMCONF_CH1_SZ_256M;
66 break;
67 case SZ_512M:
68 ret = SG_MEMCONF_CH1_SZ_512M;
69 break;
70 case SZ_1G:
71 ret = SG_MEMCONF_CH1_SZ_1G;
72 break;
73 default:
74 BUG();
75 break;
76 }
77
78 switch (num) {
79 case 1:
80 ret |= SG_MEMCONF_CH1_NUM_1;
81 break;
82 case 2:
83 ret |= SG_MEMCONF_CH1_NUM_2;
84 break;
85 default:
86 BUG();
87 break;
88 }
89 return ret;
90}
91
92void memconf_init(void)
93{
94 u32 tmp;
95
96 /* Set DDR size */
97 tmp = sg_memconf_val_ch0(CONFIG_SDRAM0_SIZE, CONFIG_DDR_NUM_CH0);
98 tmp |= sg_memconf_val_ch1(CONFIG_SDRAM1_SIZE, CONFIG_DDR_NUM_CH1);
99#if CONFIG_SDRAM0_BASE + CONFIG_SDRAM0_SIZE < CONFIG_SDRAM1_BASE
100 tmp |= SG_MEMCONF_SPARSEMEM;
101#endif
102 writel(tmp, SG_MEMCONF);
103}