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
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
|
/*
*
* Functions for omap5 based boards.
*
* (C) Copyright 2011
* Texas Instruments, <www.ti.com>
*
* Author :
* Aneesh V <aneesh@ti.com>
* Steve Sakoman <steve@sakoman.com>
* Sricharan <r.sricharan@ti.com>
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <common.h>
#include <asm/armv7.h>
#include <asm/arch/cpu.h>
#include <asm/arch/sys_proto.h>
#include <asm/sizes.h>
#include <asm/utils.h>
#include <asm/arch/gpio.h>
#include <asm/emif.h>
DECLARE_GLOBAL_DATA_PTR;
u32 *const omap_si_rev = (u32 *)OMAP5_SRAM_SCRATCH_OMAP5_REV;
static struct gpio_bank gpio_bank_54xx[6] = {
{ (void *)OMAP54XX_GPIO1_BASE, METHOD_GPIO_24XX },
{ (void *)OMAP54XX_GPIO2_BASE, METHOD_GPIO_24XX },
{ (void *)OMAP54XX_GPIO3_BASE, METHOD_GPIO_24XX },
{ (void *)OMAP54XX_GPIO4_BASE, METHOD_GPIO_24XX },
{ (void *)OMAP54XX_GPIO5_BASE, METHOD_GPIO_24XX },
{ (void *)OMAP54XX_GPIO6_BASE, METHOD_GPIO_24XX },
};
const struct gpio_bank *const omap_gpio_bank = gpio_bank_54xx;
#ifdef CONFIG_SPL_BUILD
/* LPDDR2 specific IO settings */
static void io_settings_lpddr2(void)
{
writel(DDR_IO_I_34OHM_SR_FASTEST_WD_DQ_NO_PULL_DQS_PULL_DOWN,
(*ctrl)->control_ddrch1_0);
writel(DDR_IO_I_34OHM_SR_FASTEST_WD_DQ_NO_PULL_DQS_PULL_DOWN,
(*ctrl)->control_ddrch1_1);
writel(DDR_IO_I_34OHM_SR_FASTEST_WD_DQ_NO_PULL_DQS_PULL_DOWN,
(*ctrl)->control_ddrch2_0);
writel(DDR_IO_I_34OHM_SR_FASTEST_WD_DQ_NO_PULL_DQS_PULL_DOWN,
(*ctrl)->control_ddrch2_1);
writel(DDR_IO_I_34OHM_SR_FASTEST_WD_CK_CKE_NCS_CA_PULL_DOWN,
(*ctrl)->control_lpddr2ch1_0);
writel(DDR_IO_I_34OHM_SR_FASTEST_WD_CK_CKE_NCS_CA_PULL_DOWN,
(*ctrl)->control_lpddr2ch1_1);
writel(DDR_IO_0_DDR2_DQ_INT_EN_ALL_DDR3_CA_DIS_ALL,
(*ctrl)->control_ddrio_0);
writel(DDR_IO_1_DQ_OUT_EN_ALL_DQ_INT_EN_ALL,
(*ctrl)->control_ddrio_1);
writel(DDR_IO_2_CA_OUT_EN_ALL_CA_INT_EN_ALL,
(*ctrl)->control_ddrio_2);
}
/* DDR3 specific IO settings */
static void io_settings_ddr3(void)
{
u32 io_settings = 0;
writel(DDR_IO_I_40OHM_SR_SLOWEST_WD_DQ_NO_PULL_DQS_NO_PULL,
(*ctrl)->control_ddr3ch1_0);
writel(DDR_IO_I_40OHM_SR_FAST_WD_DQ_NO_PULL_DQS_NO_PULL,
(*ctrl)->control_ddrch1_0);
writel(DDR_IO_I_40OHM_SR_FAST_WD_DQ_NO_PULL_DQS_NO_PULL,
(*ctrl)->control_ddrch1_1);
writel(DDR_IO_I_40OHM_SR_SLOWEST_WD_DQ_NO_PULL_DQS_NO_PULL,
(*ctrl)->control_ddr3ch2_0);
writel(DDR_IO_I_40OHM_SR_FAST_WD_DQ_NO_PULL_DQS_NO_PULL,
(*ctrl)->control_ddrch2_0);
writel(DDR_IO_I_40OHM_SR_FAST_WD_DQ_NO_PULL_DQS_NO_PULL,
(*ctrl)->control_ddrch2_1);
writel(DDR_IO_0_VREF_CELLS_DDR3_VALUE,
(*ctrl)->control_ddrio_0);
writel(DDR_IO_1_VREF_CELLS_DDR3_VALUE,
(*ctrl)->control_ddrio_1);
writel(DDR_IO_2_VREF_CELLS_DDR3_VALUE,
(*ctrl)->control_ddrio_2);
/* omap5432 does not use lpddr2 */
writel(0x0, (*ctrl)->control_lpddr2ch1_0);
writel(0x0, (*ctrl)->control_lpddr2ch1_1);
writel(SDRAM_CONFIG_EXT_RD_LVL_11_SAMPLES,
(*ctrl)->control_emif1_sdram_config_ext);
writel(SDRAM_CONFIG_EXT_RD_LVL_11_SAMPLES,
(*ctrl)->control_emif2_sdram_config_ext);
/* Disable DLL select */
io_settings = (readl((*ctrl)->control_port_emif1_sdram_config)
& 0xFFEFFFFF);
writel(io_settings,
(*ctrl)->control_port_emif1_sdram_config);
io_settings = (readl((*ctrl)->control_port_emif2_sdram_config)
& 0xFFEFFFFF);
writel(io_settings,
(*ctrl)->control_port_emif2_sdram_config);
}
/*
* Some tuning of IOs for optimal power and performance
*/
void do_io_settings(void)
{
u32 io_settings = 0, mask = 0;
/* Impedance settings EMMC, C2C 1,2, hsi2 */
mask = (ds_mask << 2) | (ds_mask << 8) |
(ds_mask << 16) | (ds_mask << 18);
io_settings = readl((*ctrl)->control_smart1io_padconf_0) &
(~mask);
io_settings |= (ds_60_ohm << 8) | (ds_45_ohm << 16) |
(ds_45_ohm << 18) | (ds_60_ohm << 2);
writel(io_settings, (*ctrl)->control_smart1io_padconf_0);
/* Impedance settings Mcspi2 */
mask = (ds_mask << 30);
io_settings = readl((*ctrl)->control_smart1io_padconf_1) &
(~mask);
io_settings |= (ds_60_ohm << 30);
writel(io_settings, (*ctrl)->control_smart1io_padconf_1);
/* Impedance settings C2C 3,4 */
mask = (ds_mask << 14) | (ds_mask << 16);
io_settings = readl((*ctrl)->control_smart1io_padconf_2) &
(~mask);
io_settings |= (ds_45_ohm << 14) | (ds_45_ohm << 16);
writel(io_settings, (*ctrl)->control_smart1io_padconf_2);
/* Slew rate settings EMMC, C2C 1,2 */
mask = (sc_mask << 8) | (sc_mask << 16) | (sc_mask << 18);
io_settings = readl((*ctrl)->control_smart2io_padconf_0) &
(~mask);
io_settings |= (sc_fast << 8) | (sc_na << 16) | (sc_na << 18);
writel(io_settings, (*ctrl)->control_smart2io_padconf_0);
/* Slew rate settings hsi2, Mcspi2 */
mask = (sc_mask << 24) | (sc_mask << 28);
io_settings = readl((*ctrl)->control_smart2io_padconf_1) &
(~mask);
io_settings |= (sc_fast << 28) | (sc_fast << 24);
writel(io_settings, (*ctrl)->control_smart2io_padconf_1);
/* Slew rate settings C2C 3,4 */
mask = (sc_mask << 16) | (sc_mask << 18);
io_settings = readl((*ctrl)->control_smart2io_padconf_2) &
(~mask);
io_settings |= (sc_na << 16) | (sc_na << 18);
writel(io_settings, (*ctrl)->control_smart2io_padconf_2);
/* impedance and slew rate settings for usb */
mask = (usb_i_mask << 29) | (usb_i_mask << 26) | (usb_i_mask << 23) |
(usb_i_mask << 20) | (usb_i_mask << 17) | (usb_i_mask << 14);
io_settings = readl((*ctrl)->control_smart3io_padconf_1) &
(~mask);
io_settings |= (ds_60_ohm << 29) | (ds_60_ohm << 26) |
(ds_60_ohm << 23) | (sc_fast << 20) |
(sc_fast << 17) | (sc_fast << 14);
writel(io_settings, (*ctrl)->control_smart3io_padconf_1);
if (emif_sdram_type() == EMIF_SDRAM_TYPE_LPDDR2)
io_settings_lpddr2();
else
io_settings_ddr3();
/* Efuse settings */
writel(EFUSE_1, (*ctrl)->control_efuse_1);
writel(EFUSE_2, (*ctrl)->control_efuse_2);
writel(EFUSE_3, (*ctrl)->control_efuse_3);
writel(EFUSE_4, (*ctrl)->control_efuse_4);
}
#endif
void config_data_eye_leveling_samples(u32 emif_base)
{
/*EMIF_SDRAM_CONFIG_EXT-Read data eye leveling no of samples =4*/
if (emif_base == EMIF1_BASE)
writel(SDRAM_CONFIG_EXT_RD_LVL_4_SAMPLES,
(*ctrl)->control_emif1_sdram_config_ext);
else if (emif_base == EMIF2_BASE)
writel(SDRAM_CONFIG_EXT_RD_LVL_4_SAMPLES,
(*ctrl)->control_emif2_sdram_config_ext);
}
void init_omap_revision(void)
{
/*
* For some of the ES2/ES1 boards ID_CODE is not reliable:
* Also, ES1 and ES2 have different ARM revisions
* So use ARM revision for identification
*/
unsigned int rev = cortex_rev();
switch (rev) {
case MIDR_CORTEX_A15_R0P0:
switch (readl(CONTROL_ID_CODE)) {
case OMAP5430_CONTROL_ID_CODE_ES1_0:
*omap_si_rev = OMAP5430_ES1_0;
break;
case OMAP5432_CONTROL_ID_CODE_ES1_0:
default:
*omap_si_rev = OMAP5432_ES1_0;
break;
}
break;
default:
*omap_si_rev = OMAP5430_SILICON_ID_INVALID;
}
}
void reset_cpu(ulong ignored)
{
u32 omap_rev = omap_revision();
/*
* WARM reset is not functional in case of OMAP5430 ES1.0 soc.
* So use cold reset in case instead.
*/
if (omap_rev == OMAP5430_ES1_0)
writel(PRM_RSTCTRL_RESET << 0x1, PRM_RSTCTRL);
else
writel(PRM_RSTCTRL_RESET, PRM_RSTCTRL);
}
|
