board/siemens/common/board.c

   1 /*
   2  * Common board functions for siemens AM335X based boards
   3  * (C) Copyright 2013 Siemens Schweiz AG
   4  * (C) Heiko Schocher, DENX Software Engineering, hs@denx.de.
   5  *
   6  * Based on:
   7  * U-Boot file:/board/ti/am335x/board.c
   8  * Copyright (C) 2011, Texas Instruments, Incorporated - http://www.ti.com/
   9  *
  10  * SPDX-License-Identifier:     GPL-2.0+
  11  */
  12
  13 #include <common.h>
  14 #include <errno.h>
  15 #include <spl.h>
  16 #include <asm/arch/cpu.h>
  17 #include <asm/arch/hardware.h>
  18 #include <asm/arch/omap.h>
  19 #include <asm/arch/ddr_defs.h>
  20 #include <asm/arch/clock.h>
  21 #include <asm/arch/gpio.h>
  22 #include <asm/arch/mmc_host_def.h>
  23 #include <asm/arch/sys_proto.h>
  24 #include <asm/io.h>
  25 #include <asm/emif.h>
  26 #include <asm/gpio.h>
  27 #include <i2c.h>
  28 #include <miiphy.h>
  29 #include <cpsw.h>
  30 #include <watchdog.h>
  31 #include "../common/factoryset.h"
  32
  33 DECLARE_GLOBAL_DATA_PTR;
  34
  35 #ifdef CONFIG_SPL_BUILD
  36 void set_uart_mux_conf(void)
  37 {
  38         enable_uart0_pin_mux();
  39 }
  40
  41 void set_mux_conf_regs(void)
  42 {
  43         /* Initalize the board header */
  44         enable_i2c0_pin_mux();
  45         i2c_set_bus_num(0);
  46
  47         /* enable early the console */
  48         gd->baudrate = CONFIG_BAUDRATE;
  49         serial_init();
  50         gd->have_console = 1;
  51         if (read_eeprom() < 0)
  52                 puts("Could not get board ID.\n");
  53
  54         enable_board_pin_mux();
  55 }
  56
  57 void sdram_init(void)
  58 {
  59         spl_siemens_board_init();
  60         board_init_ddr();
  61
  62         return;
  63 }
  64 #endif /* #ifdef CONFIG_SPL_BUILD */
  65
  66 #ifndef CONFIG_SPL_BUILD
  67 /*
  68  * Basic board specific setup.  Pinmux has been handled already.
  69  */
  70 int board_init(void)
  71 {
  72 #if defined(CONFIG_HW_WATCHDOG)
  73         hw_watchdog_init();
  74 #endif /* defined(CONFIG_HW_WATCHDOG) */
  75         i2c_set_bus_num(0);
  76         if (read_eeprom() < 0)
  77                 puts("Could not get board ID.\n");
  78 #ifdef CONFIG_MACH_TYPE
  79         gd->bd->bi_arch_number = CONFIG_MACH_TYPE;
  80 #endif
  81         gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
  82
  83 #ifdef CONFIG_FACTORYSET
  84         factoryset_read_eeprom(CONFIG_SYS_I2C_EEPROM_ADDR);
  85 #endif
  86
  87         gpmc_init();
  88
  89 #ifdef CONFIG_NAND_CS_INIT
  90         board_nand_cs_init();
  91 #endif
  92 #ifdef CONFIG_VIDEO
  93         board_video_init();
  94 #endif
  95
  96         return 0;
  97 }
  98 #endif /* #ifndef CONFIG_SPL_BUILD */
  99
 100 #define OSC     (V_OSCK/1000000)
 101 const struct dpll_params dpll_ddr = {
 102                 DDR_PLL_FREQ, OSC-1, 1, -1, -1, -1, -1};
 103
 104 const struct dpll_params *get_dpll_ddr_params(void)
 105 {
 106         return &dpll_ddr;
 107 }
 108
 109 #ifndef CONFIG_SPL_BUILD
 110
 111 #define MAX_NR_LEDS     10
 112 #define MAX_PIN_NUMBER  128
 113 #define STARTUP 0
 114
 115 #if defined(BOARD_DFU_BUTTON_GPIO)
 116 unsigned char get_button_state(char * const envname, unsigned char def)
 117 {
 118         int button = 0;
 119         int gpio;
 120         char *ptr_env;
 121
 122         /* If button is not found we take default */
 123         ptr_env = getenv(envname);
 124         if (NULL == ptr_env) {
 125                 gpio = def;
 126         } else {
 127                 gpio = (unsigned char)simple_strtoul(ptr_env, NULL, 0);
 128                 if (gpio > MAX_PIN_NUMBER)
 129                         gpio = def;
 130         }
 131
 132         gpio_request(gpio, "");
 133         gpio_direction_input(gpio);
 134         if (gpio_get_value(gpio))
 135                 button = 1;
 136         else
 137                 button = 0;
 138
 139         gpio_free(gpio);
 140
 141         return button;
 142 }
 143 /**
 144  * This command returns the status of the user button on
 145  * Input - none
 146  * Returns -    1 if button is held down
 147  *              0 if button is not held down
 148  */
 149 static int
 150 do_userbutton(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 151 {
 152         int button = 0;
 153         button = get_button_state("button_dfu0", BOARD_DFU_BUTTON_GPIO);
 154         button |= get_button_state("button_dfu1", BOARD_DFU_BUTTON_GPIO);
 155         return button;
 156 }
 157
 158 U_BOOT_CMD(
 159         dfubutton, CONFIG_SYS_MAXARGS, 1, do_userbutton,
 160         "Return the status of the DFU button",
 161         ""
 162 );
 163 #endif
 164
 165 static int
 166 do_usertestwdt(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 167 {
 168         printf("\n\n\n Go into infinite loop\n\n\n");
 169         while (1)
 170                 ;
 171         return 0;
 172 };
 173
 174 U_BOOT_CMD(
 175         testwdt, CONFIG_SYS_MAXARGS, 1, do_usertestwdt,
 176         "Sends U-Boot into infinite loop",
 177         ""
 178 );
 179
 180 /**
 181  * Get led gpios from env and set them.
 182  * The led define in environment need to need to be of the form ledN=NN,S0,S1
 183  * where N is an unsigned integer from 0 to 9 and S0 and S1 is 0 or 1. S0
 184  * defines the startup state of the led, S1 the special state of the led when
 185  * it enters e.g. dfu mode.
 186  */
 187 void set_env_gpios(unsigned char state)
 188 {
 189         char *ptr_env;
 190         char str_tmp[5];        /* must contain "ledX"*/
 191         char num[1];
 192         unsigned char i, idx, pos1, pos2, ccount;
 193         unsigned char gpio_n, gpio_s0, gpio_s1;
 194
 195         for (i = 0; i < MAX_NR_LEDS; i++) {
 196                 strcpy(str_tmp, "led");
 197                 sprintf(num, "%d", i);
 198                 strcat(str_tmp, num);
 199
 200                 /* If env var is not found we stop */
 201                 ptr_env = getenv(str_tmp);
 202                 if (NULL == ptr_env)
 203                         break;
 204
 205                 /* Find sperators position */
 206                 pos1 = 0;
 207                 pos2 = 0;
 208                 ccount = 0;
 209                 for (idx = 0; ptr_env[idx] != '\0'; idx++) {
 210                         if (ptr_env[idx] == ',') {
 211                                 if (ccount++ < 1)
 212                                         pos1 = idx;
 213                                 else
 214                                         pos2 = idx;
 215                         }
 216                 }
 217                 /* Bad led description skip this definition */
 218                 if (pos2 <= pos1 || ccount > 2)
 219                         continue;
 220
 221                 /* Get pin number and request gpio */
 222                 memset(str_tmp, 0, sizeof(str_tmp));
 223                 strncpy(str_tmp, ptr_env, pos1*sizeof(char));
 224                 gpio_n = (unsigned char)simple_strtoul(str_tmp, NULL, 0);
 225
 226                 /* Invalid gpio number skip definition */
 227                 if (gpio_n > MAX_PIN_NUMBER)
 228                         continue;
 229
 230                 gpio_request(gpio_n, "");
 231
 232                 if (state == STARTUP) {
 233                         /* get pin state 0 and set */
 234                         memset(str_tmp, 0, sizeof(str_tmp));
 235                         strncpy(str_tmp, ptr_env+pos1+1,
 236                                 (pos2-pos1-1)*sizeof(char));
 237                         gpio_s0 = (unsigned char)simple_strtoul(str_tmp, NULL,
 238                                                                 0);
 239
 240                         gpio_direction_output(gpio_n, gpio_s0);
 241
 242                 } else {
 243                         /* get pin state 1 and set */
 244                         memset(str_tmp, 0, sizeof(str_tmp));
 245                         strcpy(str_tmp, ptr_env+pos2+1);
 246                         gpio_s1 = (unsigned char)simple_strtoul(str_tmp, NULL,
 247                                                                 0);
 248                         gpio_direction_output(gpio_n, gpio_s1);
 249                 }
 250         } /* loop through defined led in environment */
 251 }
 252
 253 static int do_board_led(cmd_tbl_t *cmdtp, int flag, int argc,
 254                            char *const argv[])
 255 {
 256         if (argc != 2)
 257                 return CMD_RET_USAGE;
 258         if ((unsigned char)simple_strtoul(argv[1], NULL, 0) == STARTUP)
 259                 set_env_gpios(0);
 260         else
 261                 set_env_gpios(1);
 262         return 0;
 263 };
 264
 265 U_BOOT_CMD(
 266         draco_led, CONFIG_SYS_MAXARGS, 2,       do_board_led,
 267         "Set LEDs defined in environment",
 268         "<0|1>"
 269 );
 270 #endif /* !CONFIG_SPL_BUILD */