fb5d0364818e6fddf7f75d692ee4d4759a319a1e
[karo-tx-uboot.git] / board / corscience / tricorder / tricorder.c
1 /*
2  * (C) Copyright 2012
3  * Corscience GmbH & Co. KG, <www.corscience.de>
4  * Thomas Weber <weber@corscience.de>
5  * Sunil Kumar <sunilsaini05@gmail.com>
6  * Shashi Ranjan <shashiranjanmca05@gmail.com>
7  *
8  * Derived from Devkit8000 code by
9  * Frederik Kriewitz <frederik@kriewitz.eu>
10  *
11  * SPDX-License-Identifier:     GPL-2.0+
12  */
13 #include <common.h>
14 #include <twl4030.h>
15 #include <asm/io.h>
16 #include <asm/gpio.h>
17 #include <asm/arch/mmc_host_def.h>
18 #include <asm/arch/mux.h>
19 #include <asm/arch/sys_proto.h>
20 #include <asm/arch/mem.h>
21 #include "tricorder.h"
22 #include "tricorder-eeprom.h"
23
24 DECLARE_GLOBAL_DATA_PTR;
25
26 /*
27  * Routine: board_init
28  * Description: Early hardware init.
29  */
30 int board_init(void)
31 {
32         gpmc_init(); /* in SRAM or SDRAM, finish GPMC */
33         /* boot param addr */
34         gd->bd->bi_boot_params = (OMAP34XX_SDRC_CS0 + 0x100);
35
36         return 0;
37 }
38
39 /**
40  * get_eeprom - read the eeprom
41  *
42  * @eeprom - pointer to a eeprom struct to fill
43  *
44  * This function will panic() on wrong EEPROM content
45  */
46 static void get_eeprom(struct tricorder_eeprom *eeprom)
47 {
48         int ret;
49
50         if (!eeprom)
51                 panic("No eeprom given!\n");
52
53         ret = gpio_request(7, "BMS");
54         if (ret)
55                 panic("gpio: requesting BMS pin failed\n");
56
57         ret = gpio_direction_input(7);
58         if (ret)
59                 panic("gpio: set BMS as input failed\n");
60
61         ret = gpio_get_value(7);
62         if (ret < 0)
63                 panic("gpio: get BMS pin state failed\n");
64
65         gpio_free(7);
66
67         if (ret == 0) {
68                 /* BMS is _not_ set, do the EEPROM check */
69                 ret = tricorder_get_eeprom(0x51, eeprom);
70                 if (!ret) {
71                         if (strncmp(eeprom->board_name, "CS10411", 7) != 0)
72                                 panic("Wrong board name '%.*s'\n",
73                                       sizeof(eeprom->board_name),
74                                                 eeprom->board_name);
75                         if (eeprom->board_version[0] < 'D')
76                                 panic("Wrong board version '%.*s'\n",
77                                       sizeof(eeprom->board_version),
78                                                 eeprom->board_version);
79                 } else {
80                         panic("Could not get board revision\n");
81                 }
82         }
83 }
84
85 /**
86  * print_hwversion - print out a HW version string
87  *
88  * @eeprom - pointer to the eeprom
89  */
90 static void print_hwversion(struct tricorder_eeprom *eeprom)
91 {
92         size_t len;
93         if (!eeprom)
94                 panic("No eeprom given!");
95
96         printf("Board %.*s:%.*s serial %.*s",
97                sizeof(eeprom->board_name), eeprom->board_name,
98                sizeof(eeprom->board_version), eeprom->board_version,
99                sizeof(eeprom->board_serial), eeprom->board_serial);
100
101         len = strnlen(eeprom->interface_version,
102                       sizeof(eeprom->interface_version));
103         if (len > 0)
104                 printf(" HW interface version %.*s",
105                        sizeof(eeprom->interface_version),
106                        eeprom->interface_version);
107         puts("\n");
108 }
109
110 /*
111  * Routine: misc_init_r
112  * Description: Configure board specific parts
113  */
114 int misc_init_r(void)
115 {
116         struct tricorder_eeprom eeprom;
117         get_eeprom(&eeprom);
118         print_hwversion(&eeprom);
119
120         twl4030_power_init();
121         status_led_set(0, STATUS_LED_ON);
122         status_led_set(1, STATUS_LED_ON);
123         status_led_set(2, STATUS_LED_ON);
124
125         dieid_num_r();
126
127         return 0;
128 }
129
130 /*
131  * Routine: set_muxconf_regs
132  * Description: Setting up the configuration Mux registers specific to the
133  *              hardware. Many pins need to be moved from protect to primary
134  *              mode.
135  */
136 void set_muxconf_regs(void)
137 {
138         MUX_TRICORDER();
139 }
140
141 #if defined(CONFIG_GENERIC_MMC) && !(defined(CONFIG_SPL_BUILD))
142 int board_mmc_init(bd_t *bis)
143 {
144         return omap_mmc_init(0, 0, 0, -1, -1);
145 }
146 #endif
147
148 /*
149  * Routine: get_board_mem_timings
150  * Description: If we use SPL then there is no x-loader nor config header
151  * so we have to setup the DDR timings ourself on the first bank.  This
152  * provides the timing values back to the function that configures
153  * the memory.  We have either one or two banks of 128MB DDR.
154  */
155 void get_board_mem_timings(struct board_sdrc_timings *timings)
156 {
157         /* General SDRC config */
158         timings->mcfg = MICRON_V_MCFG_165(128 << 20);
159         timings->rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_165MHz;
160
161         /* AC timings */
162         timings->ctrla = MICRON_V_ACTIMA_165;
163         timings->ctrlb = MICRON_V_ACTIMB_165;
164         timings->mr = MICRON_V_MR_165;
165 }