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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>
38 DECLARE_GLOBAL_DATA_PTR;
40 u32 *const omap_si_rev = (u32 *)OMAP4_SRAM_SCRATCH_OMAP4_REV;
42 static const struct gpio_bank gpio_bank_44xx[6] = {
43         { (void *)OMAP44XX_GPIO1_BASE, METHOD_GPIO_24XX },
44         { (void *)OMAP44XX_GPIO2_BASE, METHOD_GPIO_24XX },
45         { (void *)OMAP44XX_GPIO3_BASE, METHOD_GPIO_24XX },
46         { (void *)OMAP44XX_GPIO4_BASE, METHOD_GPIO_24XX },
47         { (void *)OMAP44XX_GPIO5_BASE, METHOD_GPIO_24XX },
48         { (void *)OMAP44XX_GPIO6_BASE, METHOD_GPIO_24XX },
49 };
51 const struct gpio_bank *const omap_gpio_bank = gpio_bank_44xx;
53 #ifdef CONFIG_SPL_BUILD
54 /*
55  * Some tuning of IOs for optimal power and performance
56  */
57 void do_io_settings(void)
58 {
59         u32 lpddr2io;
61         u32 omap4_rev = omap_revision();
63         if (omap4_rev == OMAP4430_ES1_0)
64                 lpddr2io = CONTROL_LPDDR2IO_SLEW_125PS_DRV8_PULL_DOWN;
65         else if (omap4_rev == OMAP4430_ES2_0)
66                 lpddr2io = CONTROL_LPDDR2IO_SLEW_325PS_DRV8_GATE_KEEPER;
67         else
68                 lpddr2io = CONTROL_LPDDR2IO_SLEW_315PS_DRV12_PULL_DOWN;
70         /* EMIF1 */
71         writel(lpddr2io, (*ctrl)->control_lpddr2io1_0);
72         writel(lpddr2io, (*ctrl)->control_lpddr2io1_1);
73         /* No pull for GR10 as per hw team's recommendation */
74         writel(lpddr2io & ~LPDDR2IO_GR10_WD_MASK,
75                 (*ctrl)->control_lpddr2io1_2);
76         writel(CONTROL_LPDDR2IO_3_VAL, (*ctrl)->control_lpddr2io1_3);
78         /* EMIF2 */
79         writel(lpddr2io, (*ctrl)->control_lpddr2io2_0);
80         writel(lpddr2io, (*ctrl)->control_lpddr2io2_1);
81         /* No pull for GR10 as per hw team's recommendation */
82         writel(lpddr2io & ~LPDDR2IO_GR10_WD_MASK,
83                 (*ctrl)->control_lpddr2io2_2);
84         writel(CONTROL_LPDDR2IO_3_VAL, (*ctrl)->control_lpddr2io2_3);
86         /*
87          * Some of these settings (TRIM values) come from eFuse and are
88          * in turn programmed in the eFuse at manufacturing time after
89          * calibration of the device. Do the software over-ride only if
90          * the device is not correctly trimmed
91          */
92         if (!(readl((*ctrl)->control_std_fuse_opp_bgap) & 0xFFFF)) {
94                 writel(LDOSRAM_VOLT_CTRL_OVERRIDE,
95                         (*ctrl)->control_ldosram_iva_voltage_ctrl);
97                 writel(LDOSRAM_VOLT_CTRL_OVERRIDE,
98                         (*ctrl)->control_ldosram_mpu_voltage_ctrl);
100                 writel(LDOSRAM_VOLT_CTRL_OVERRIDE,
101                         (*ctrl)->control_ldosram_core_voltage_ctrl);
102         }
104         /*
105          * Over-ride the register
106          *      i. unconditionally for all 4430
107          *      ii. only if un-trimmed for 4460
108          */
109         if (!readl((*ctrl)->control_efuse_1))
110                 writel(CONTROL_EFUSE_1_OVERRIDE, (*ctrl)->control_efuse_1);
112         if ((omap4_rev < OMAP4460_ES1_0) || !readl((*ctrl)->control_efuse_2))
113                 writel(CONTROL_EFUSE_2_OVERRIDE, (*ctrl)->control_efuse_2);
115 #endif /* CONFIG_SPL_BUILD */
117 /* dummy fuction for omap4 */
118 void config_data_eye_leveling_samples(u32 emif_base)
122 void init_omap_revision(void)
124         /*
125          * For some of the ES2/ES1 boards ID_CODE is not reliable:
126          * Also, ES1 and ES2 have different ARM revisions
127          * So use ARM revision for identification
128          */
129         unsigned int arm_rev = cortex_rev();
131         switch (arm_rev) {
132         case MIDR_CORTEX_A9_R0P1:
133                 *omap_si_rev = OMAP4430_ES1_0;
134                 break;
135         case MIDR_CORTEX_A9_R1P2:
136                 switch (readl(CONTROL_ID_CODE)) {
137                 case OMAP4_CONTROL_ID_CODE_ES2_0:
138                         *omap_si_rev = OMAP4430_ES2_0;
139                         break;
140                 case OMAP4_CONTROL_ID_CODE_ES2_1:
141                         *omap_si_rev = OMAP4430_ES2_1;
142                         break;
143                 case OMAP4_CONTROL_ID_CODE_ES2_2:
144                         *omap_si_rev = OMAP4430_ES2_2;
145                         break;
146                 default:
147                         *omap_si_rev = OMAP4430_ES2_0;
148                         break;
149                 }
150                 break;
151         case MIDR_CORTEX_A9_R1P3:
152                 *omap_si_rev = OMAP4430_ES2_3;
153                 break;
154         case MIDR_CORTEX_A9_R2P10:
155                 switch (readl(CONTROL_ID_CODE)) {
156                 case OMAP4460_CONTROL_ID_CODE_ES1_1:
157                         *omap_si_rev = OMAP4460_ES1_1;
158                         break;
159                 case OMAP4460_CONTROL_ID_CODE_ES1_0:
160                 default:
161                         *omap_si_rev = OMAP4460_ES1_0;
162                         break;
163                 }
164                 break;
165         default:
166                 *omap_si_rev = OMAP4430_SILICON_ID_INVALID;
167                 break;
168         }
171 #ifndef CONFIG_SYS_L2CACHE_OFF
172 void v7_outer_cache_enable(void)
174         set_pl310_ctrl_reg(1);
177 void v7_outer_cache_disable(void)
179         set_pl310_ctrl_reg(0);
181 #endif /* !CONFIG_SYS_L2CACHE_OFF */