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 gpmc_init(); 87 88 #ifdef CONFIG_VIDEO 89 board_video_init(); 90 #endif 91 92 return 0; 93 } 94 #endif /* #ifndef CONFIG_SPL_BUILD */ 95 96 #define OSC (V_OSCK/1000000) 97 const struct dpll_params dpll_ddr = { 98 DDR_PLL_FREQ, OSC-1, 1, -1, -1, -1, -1}; 99 100 const struct dpll_params *get_dpll_ddr_params(void) 101 { 102 return &dpll_ddr; 103 } 104 105 #ifndef CONFIG_SPL_BUILD 106 107 #define MAX_NR_LEDS 10 108 #define MAX_PIN_NUMBER 128 109 #define STARTUP 0 110 111 #if defined(BOARD_DFU_BUTTON_GPIO) 112 unsigned char get_button_state(char * const envname, unsigned char def) 113 { 114 int button = 0; 115 int gpio; 116 char *ptr_env; 117 118 /* If button is not found we take default */ 119 ptr_env = getenv(envname); 120 if (NULL == ptr_env) { 121 gpio = def; 122 } else { 123 gpio = (unsigned char)simple_strtoul(ptr_env, NULL, 0); 124 if (gpio > MAX_PIN_NUMBER) 125 gpio = def; 126 } 127 128 gpio_request(gpio, ""); 129 gpio_direction_input(gpio); 130 if (gpio_get_value(gpio)) 131 button = 1; 132 else 133 button = 0; 134 135 gpio_free(gpio); 136 137 return button; 138 } 139 /** 140 * This command returns the status of the user button on 141 * Input - none 142 * Returns - 1 if button is held down 143 * 0 if button is not held down 144 */ 145 static int 146 do_userbutton(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) 147 { 148 int button = 0; 149 button = get_button_state("button_dfu0", BOARD_DFU_BUTTON_GPIO); 150 button |= get_button_state("button_dfu1", BOARD_DFU_BUTTON_GPIO); 151 return button; 152 } 153 154 U_BOOT_CMD( 155 dfubutton, CONFIG_SYS_MAXARGS, 1, do_userbutton, 156 "Return the status of the DFU button", 157 "" 158 ); 159 #endif 160 161 static int 162 do_usertestwdt(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) 163 { 164 printf("\n\n\n Go into infinite loop\n\n\n"); 165 while (1) 166 ; 167 return 0; 168 }; 169 170 U_BOOT_CMD( 171 testwdt, CONFIG_SYS_MAXARGS, 1, do_usertestwdt, 172 "Sends U-Boot into infinite loop", 173 "" 174 ); 175 176 /** 177 * Get led gpios from env and set them. 178 * The led define in environment need to need to be of the form ledN=NN,S0,S1 179 * where N is an unsigned integer from 0 to 9 and S0 and S1 is 0 or 1. S0 180 * defines the startup state of the led, S1 the special state of the led when 181 * it enters e.g. dfu mode. 182 */ 183 void set_env_gpios(unsigned char state) 184 { 185 char *ptr_env; 186 char str_tmp[5]; /* must contain "ledX"*/ 187 char num[1]; 188 unsigned char i, idx, pos1, pos2, ccount; 189 unsigned char gpio_n, gpio_s0, gpio_s1; 190 191 for (i = 0; i < MAX_NR_LEDS; i++) { 192 strcpy(str_tmp, "led"); 193 sprintf(num, "%d", i); 194 strcat(str_tmp, num); 195 196 /* If env var is not found we stop */ 197 ptr_env = getenv(str_tmp); 198 if (NULL == ptr_env) 199 break; 200 201 /* Find sperators position */ 202 pos1 = 0; 203 pos2 = 0; 204 ccount = 0; 205 for (idx = 0; ptr_env[idx] != '\0'; idx++) { 206 if (ptr_env[idx] == ',') { 207 if (ccount++ < 1) 208 pos1 = idx; 209 else 210 pos2 = idx; 211 } 212 } 213 /* Bad led description skip this definition */ 214 if (pos2 <= pos1 || ccount > 2) 215 continue; 216 217 /* Get pin number and request gpio */ 218 memset(str_tmp, 0, sizeof(str_tmp)); 219 strncpy(str_tmp, ptr_env, pos1*sizeof(char)); 220 gpio_n = (unsigned char)simple_strtoul(str_tmp, NULL, 0); 221 222 /* Invalid gpio number skip definition */ 223 if (gpio_n > MAX_PIN_NUMBER) 224 continue; 225 226 gpio_request(gpio_n, ""); 227 228 if (state == STARTUP) { 229 /* get pin state 0 and set */ 230 memset(str_tmp, 0, sizeof(str_tmp)); 231 strncpy(str_tmp, ptr_env+pos1+1, 232 (pos2-pos1-1)*sizeof(char)); 233 gpio_s0 = (unsigned char)simple_strtoul(str_tmp, NULL, 234 0); 235 236 gpio_direction_output(gpio_n, gpio_s0); 237 238 } else { 239 /* get pin state 1 and set */ 240 memset(str_tmp, 0, sizeof(str_tmp)); 241 strcpy(str_tmp, ptr_env+pos2+1); 242 gpio_s1 = (unsigned char)simple_strtoul(str_tmp, NULL, 243 0); 244 gpio_direction_output(gpio_n, gpio_s1); 245 } 246 } /* loop through defined led in environment */ 247 } 248 249 static int do_board_led(cmd_tbl_t *cmdtp, int flag, int argc, 250 char *const argv[]) 251 { 252 if (argc != 2) 253 return CMD_RET_USAGE; 254 if ((unsigned char)simple_strtoul(argv[1], NULL, 0) == STARTUP) 255 set_env_gpios(0); 256 else 257 set_env_gpios(1); 258 return 0; 259 }; 260 261 U_BOOT_CMD( 262 draco_led, CONFIG_SYS_MAXARGS, 2, do_board_led, 263 "Set LEDs defined in environment", 264 "<0|1>" 265 ); 266 #endif /* !CONFIG_SPL_BUILD */ 267