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ARM: OMAP4/5: Make OMAPx_SRAM_SCRATCH_ defines common
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1 /*
2  *
3  * Common functions for OMAP4 based boards
4  *
5  * (C) Copyright 2010
6  * Texas Instruments, <www.ti.com>
7  *
8  * Author :
9  *      Aneesh V        <aneesh@ti.com>
10  *      Steve Sakoman   <steve@sakoman.com>
11  *
12  * See file CREDITS for list of people who contributed to this
13  * project.
14  *
15  * This program is free software; you can redistribute it and/or
16  * modify it under the terms of the GNU General Public License as
17  * published by the Free Software Foundation; either version 2 of
18  * the License, or (at your option) any later version.
19  *
20  * This program is distributed in the hope that it will be useful,
21  * but WITHOUT ANY WARRANTY; without even the implied warranty of
22  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23  * GNU General Public License for more details.
24  *
25  * You should have received a copy of the GNU General Public License
26  * along with this program; if not, write to the Free Software
27  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
28  * MA 02111-1307 USA
29  */
30 #include <common.h>
31 #include <asm/armv7.h>
32 #include <asm/arch/cpu.h>
33 #include <asm/arch/sys_proto.h>
34 #include <asm/sizes.h>
35 #include <asm/emif.h>
36 #include <asm/arch/gpio.h>
37 #include <asm/omap_common.h>
38
39 DECLARE_GLOBAL_DATA_PTR;
40
41 u32 *const omap_si_rev = (u32 *)OMAP_SRAM_SCRATCH_OMAP_REV;
42
43 static const struct gpio_bank gpio_bank_44xx[6] = {
44         { (void *)OMAP44XX_GPIO1_BASE, METHOD_GPIO_24XX },
45         { (void *)OMAP44XX_GPIO2_BASE, METHOD_GPIO_24XX },
46         { (void *)OMAP44XX_GPIO3_BASE, METHOD_GPIO_24XX },
47         { (void *)OMAP44XX_GPIO4_BASE, METHOD_GPIO_24XX },
48         { (void *)OMAP44XX_GPIO5_BASE, METHOD_GPIO_24XX },
49         { (void *)OMAP44XX_GPIO6_BASE, METHOD_GPIO_24XX },
50 };
51
52 const struct gpio_bank *const omap_gpio_bank = gpio_bank_44xx;
53
54 #ifdef CONFIG_SPL_BUILD
55 /*
56  * Some tuning of IOs for optimal power and performance
57  */
58 void do_io_settings(void)
59 {
60         u32 lpddr2io;
61
62         u32 omap4_rev = omap_revision();
63
64         if (omap4_rev == OMAP4430_ES1_0)
65                 lpddr2io = CONTROL_LPDDR2IO_SLEW_125PS_DRV8_PULL_DOWN;
66         else if (omap4_rev == OMAP4430_ES2_0)
67                 lpddr2io = CONTROL_LPDDR2IO_SLEW_325PS_DRV8_GATE_KEEPER;
68         else
69                 lpddr2io = CONTROL_LPDDR2IO_SLEW_315PS_DRV12_PULL_DOWN;
70
71         /* EMIF1 */
72         writel(lpddr2io, (*ctrl)->control_lpddr2io1_0);
73         writel(lpddr2io, (*ctrl)->control_lpddr2io1_1);
74         /* No pull for GR10 as per hw team's recommendation */
75         writel(lpddr2io & ~LPDDR2IO_GR10_WD_MASK,
76                 (*ctrl)->control_lpddr2io1_2);
77         writel(CONTROL_LPDDR2IO_3_VAL, (*ctrl)->control_lpddr2io1_3);
78
79         /* EMIF2 */
80         writel(lpddr2io, (*ctrl)->control_lpddr2io2_0);
81         writel(lpddr2io, (*ctrl)->control_lpddr2io2_1);
82         /* No pull for GR10 as per hw team's recommendation */
83         writel(lpddr2io & ~LPDDR2IO_GR10_WD_MASK,
84                 (*ctrl)->control_lpddr2io2_2);
85         writel(CONTROL_LPDDR2IO_3_VAL, (*ctrl)->control_lpddr2io2_3);
86
87         /*
88          * Some of these settings (TRIM values) come from eFuse and are
89          * in turn programmed in the eFuse at manufacturing time after
90          * calibration of the device. Do the software over-ride only if
91          * the device is not correctly trimmed
92          */
93         if (!(readl((*ctrl)->control_std_fuse_opp_bgap) & 0xFFFF)) {
94
95                 writel(LDOSRAM_VOLT_CTRL_OVERRIDE,
96                         (*ctrl)->control_ldosram_iva_voltage_ctrl);
97
98                 writel(LDOSRAM_VOLT_CTRL_OVERRIDE,
99                         (*ctrl)->control_ldosram_mpu_voltage_ctrl);
100
101                 writel(LDOSRAM_VOLT_CTRL_OVERRIDE,
102                         (*ctrl)->control_ldosram_core_voltage_ctrl);
103         }
104
105         /*
106          * Over-ride the register
107          *      i. unconditionally for all 4430
108          *      ii. only if un-trimmed for 4460
109          */
110         if (!readl((*ctrl)->control_efuse_1))
111                 writel(CONTROL_EFUSE_1_OVERRIDE, (*ctrl)->control_efuse_1);
112
113         if ((omap4_rev < OMAP4460_ES1_0) || !readl((*ctrl)->control_efuse_2))
114                 writel(CONTROL_EFUSE_2_OVERRIDE, (*ctrl)->control_efuse_2);
115 }
116 #endif /* CONFIG_SPL_BUILD */
117
118 /* dummy fuction for omap4 */
119 void config_data_eye_leveling_samples(u32 emif_base)
120 {
121 }
122
123 void init_omap_revision(void)
124 {
125         /*
126          * For some of the ES2/ES1 boards ID_CODE is not reliable:
127          * Also, ES1 and ES2 have different ARM revisions
128          * So use ARM revision for identification
129          */
130         unsigned int arm_rev = cortex_rev();
131
132         switch (arm_rev) {
133         case MIDR_CORTEX_A9_R0P1:
134                 *omap_si_rev = OMAP4430_ES1_0;
135                 break;
136         case MIDR_CORTEX_A9_R1P2:
137                 switch (readl(CONTROL_ID_CODE)) {
138                 case OMAP4_CONTROL_ID_CODE_ES2_0:
139                         *omap_si_rev = OMAP4430_ES2_0;
140                         break;
141                 case OMAP4_CONTROL_ID_CODE_ES2_1:
142                         *omap_si_rev = OMAP4430_ES2_1;
143                         break;
144                 case OMAP4_CONTROL_ID_CODE_ES2_2:
145                         *omap_si_rev = OMAP4430_ES2_2;
146                         break;
147                 default:
148                         *omap_si_rev = OMAP4430_ES2_0;
149                         break;
150                 }
151                 break;
152         case MIDR_CORTEX_A9_R1P3:
153                 *omap_si_rev = OMAP4430_ES2_3;
154                 break;
155         case MIDR_CORTEX_A9_R2P10:
156                 switch (readl(CONTROL_ID_CODE)) {
157                 case OMAP4460_CONTROL_ID_CODE_ES1_1:
158                         *omap_si_rev = OMAP4460_ES1_1;
159                         break;
160                 case OMAP4460_CONTROL_ID_CODE_ES1_0:
161                 default:
162                         *omap_si_rev = OMAP4460_ES1_0;
163                         break;
164                 }
165                 break;
166         default:
167                 *omap_si_rev = OMAP4430_SILICON_ID_INVALID;
168                 break;
169         }
170 }
171
172 #ifndef CONFIG_SYS_L2CACHE_OFF
173 void v7_outer_cache_enable(void)
174 {
175         set_pl310_ctrl_reg(1);
176 }
177
178 void v7_outer_cache_disable(void)
179 {
180         set_pl310_ctrl_reg(0);
181 }
182 #endif /* !CONFIG_SYS_L2CACHE_OFF */