uboot/board/siemens/common/board.c
<<
>>
Prefs
   1// SPDX-License-Identifier: GPL-2.0+
   2/*
   3 * Common board functions for siemens AM335X based boards
   4 * (C) Copyright 2013 Siemens Schweiz AG
   5 * (C) Heiko Schocher, DENX Software Engineering, hs@denx.de.
   6 *
   7 * Based on:
   8 * U-Boot file:/board/ti/am335x/board.c
   9 * Copyright (C) 2011, Texas Instruments, Incorporated - http://www.ti.com/
  10 */
  11
  12#include <common.h>
  13#include <errno.h>
  14#include <spl.h>
  15#include <asm/arch/cpu.h>
  16#include <asm/arch/hardware.h>
  17#include <asm/arch/omap.h>
  18#include <asm/arch/ddr_defs.h>
  19#include <asm/arch/clock.h>
  20#include <asm/arch/gpio.h>
  21#include <asm/arch/mmc_host_def.h>
  22#include <asm/arch/sys_proto.h>
  23#include <asm/io.h>
  24#include <asm/emif.h>
  25#include <asm/gpio.h>
  26#include <i2c.h>
  27#include <miiphy.h>
  28#include <cpsw.h>
  29#include <watchdog.h>
  30#include <asm/mach-types.h>
  31#include "../common/factoryset.h"
  32
  33DECLARE_GLOBAL_DATA_PTR;
  34
  35#ifdef CONFIG_SPL_BUILD
  36void set_uart_mux_conf(void)
  37{
  38        enable_uart0_pin_mux();
  39}
  40
  41void 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
  57void 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 */
  70int 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)
 101const struct dpll_params dpll_ddr = {
 102                DDR_PLL_FREQ, OSC-1, 1, -1, -1, -1, -1};
 103
 104const 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)
 116unsigned 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 = env_get(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 */
 149static int
 150do_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
 158U_BOOT_CMD(
 159        dfubutton, CONFIG_SYS_MAXARGS, 1, do_userbutton,
 160        "Return the status of the DFU button",
 161        ""
 162);
 163#endif
 164
 165static int
 166do_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
 174U_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 */
 187void 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 = env_get(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
 253static 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
 265U_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 */
 271