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 <asm/mach-types.h> 32 #include "../common/factoryset.h" 33 34 DECLARE_GLOBAL_DATA_PTR; 35 36 #ifdef CONFIG_SPL_BUILD 37 void set_uart_mux_conf(void) 38 { 39 enable_uart0_pin_mux(); 40 } 41 42 void set_mux_conf_regs(void) 43 { 44 /* Initalize the board header */ 45 enable_i2c0_pin_mux(); 46 i2c_set_bus_num(0); 47 48 /* enable early the console */ 49 gd->baudrate = CONFIG_BAUDRATE; 50 serial_init(); 51 gd->have_console = 1; 52 if (read_eeprom() < 0) 53 puts("Could not get board ID.\n"); 54 55 enable_board_pin_mux(); 56 } 57 58 void sdram_init(void) 59 { 60 spl_siemens_board_init(); 61 board_init_ddr(); 62 63 return; 64 } 65 #endif /* #ifdef CONFIG_SPL_BUILD */ 66 67 #ifndef CONFIG_SPL_BUILD 68 /* 69 * Basic board specific setup. Pinmux has been handled already. 70 */ 71 int board_init(void) 72 { 73 #if defined(CONFIG_HW_WATCHDOG) 74 hw_watchdog_init(); 75 #endif /* defined(CONFIG_HW_WATCHDOG) */ 76 i2c_set_bus_num(0); 77 if (read_eeprom() < 0) 78 puts("Could not get board ID.\n"); 79 #ifdef CONFIG_MACH_TYPE 80 gd->bd->bi_arch_number = CONFIG_MACH_TYPE; 81 #endif 82 gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100; 83 84 #ifdef CONFIG_FACTORYSET 85 factoryset_read_eeprom(CONFIG_SYS_I2C_EEPROM_ADDR); 86 #endif 87 88 gpmc_init(); 89 90 #ifdef CONFIG_NAND_CS_INIT 91 board_nand_cs_init(); 92 #endif 93 #ifdef CONFIG_VIDEO 94 board_video_init(); 95 #endif 96 97 return 0; 98 } 99 #endif /* #ifndef CONFIG_SPL_BUILD */ 100 101 #define OSC (V_OSCK/1000000) 102 const struct dpll_params dpll_ddr = { 103 DDR_PLL_FREQ, OSC-1, 1, -1, -1, -1, -1}; 104 105 const struct dpll_params *get_dpll_ddr_params(void) 106 { 107 return &dpll_ddr; 108 } 109 110 #ifndef CONFIG_SPL_BUILD 111 112 #define MAX_NR_LEDS 10 113 #define MAX_PIN_NUMBER 128 114 #define STARTUP 0 115 116 #if defined(BOARD_DFU_BUTTON_GPIO) 117 unsigned char get_button_state(char * const envname, unsigned char def) 118 { 119 int button = 0; 120 int gpio; 121 char *ptr_env; 122 123 /* If button is not found we take default */ 124 ptr_env = env_get(envname); 125 if (NULL == ptr_env) { 126 gpio = def; 127 } else { 128 gpio = (unsigned char)simple_strtoul(ptr_env, NULL, 0); 129 if (gpio > MAX_PIN_NUMBER) 130 gpio = def; 131 } 132 133 gpio_request(gpio, ""); 134 gpio_direction_input(gpio); 135 if (gpio_get_value(gpio)) 136 button = 1; 137 else 138 button = 0; 139 140 gpio_free(gpio); 141 142 return button; 143 } 144 /** 145 * This command returns the status of the user button on 146 * Input - none 147 * Returns - 1 if button is held down 148 * 0 if button is not held down 149 */ 150 static int 151 do_userbutton(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) 152 { 153 int button = 0; 154 button = get_button_state("button_dfu0", BOARD_DFU_BUTTON_GPIO); 155 button |= get_button_state("button_dfu1", BOARD_DFU_BUTTON_GPIO); 156 return button; 157 } 158 159 U_BOOT_CMD( 160 dfubutton, CONFIG_SYS_MAXARGS, 1, do_userbutton, 161 "Return the status of the DFU button", 162 "" 163 ); 164 #endif 165 166 static int 167 do_usertestwdt(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) 168 { 169 printf("\n\n\n Go into infinite loop\n\n\n"); 170 while (1) 171 ; 172 return 0; 173 }; 174 175 U_BOOT_CMD( 176 testwdt, CONFIG_SYS_MAXARGS, 1, do_usertestwdt, 177 "Sends U-Boot into infinite loop", 178 "" 179 ); 180 181 /** 182 * Get led gpios from env and set them. 183 * The led define in environment need to need to be of the form ledN=NN,S0,S1 184 * where N is an unsigned integer from 0 to 9 and S0 and S1 is 0 or 1. S0 185 * defines the startup state of the led, S1 the special state of the led when 186 * it enters e.g. dfu mode. 187 */ 188 void set_env_gpios(unsigned char state) 189 { 190 char *ptr_env; 191 char str_tmp[5]; /* must contain "ledX"*/ 192 char num[1]; 193 unsigned char i, idx, pos1, pos2, ccount; 194 unsigned char gpio_n, gpio_s0, gpio_s1; 195 196 for (i = 0; i < MAX_NR_LEDS; i++) { 197 strcpy(str_tmp, "led"); 198 sprintf(num, "%d", i); 199 strcat(str_tmp, num); 200 201 /* If env var is not found we stop */ 202 ptr_env = env_get(str_tmp); 203 if (NULL == ptr_env) 204 break; 205 206 /* Find sperators position */ 207 pos1 = 0; 208 pos2 = 0; 209 ccount = 0; 210 for (idx = 0; ptr_env[idx] != '\0'; idx++) { 211 if (ptr_env[idx] == ',') { 212 if (ccount++ < 1) 213 pos1 = idx; 214 else 215 pos2 = idx; 216 } 217 } 218 /* Bad led description skip this definition */ 219 if (pos2 <= pos1 || ccount > 2) 220 continue; 221 222 /* Get pin number and request gpio */ 223 memset(str_tmp, 0, sizeof(str_tmp)); 224 strncpy(str_tmp, ptr_env, pos1*sizeof(char)); 225 gpio_n = (unsigned char)simple_strtoul(str_tmp, NULL, 0); 226 227 /* Invalid gpio number skip definition */ 228 if (gpio_n > MAX_PIN_NUMBER) 229 continue; 230 231 gpio_request(gpio_n, ""); 232 233 if (state == STARTUP) { 234 /* get pin state 0 and set */ 235 memset(str_tmp, 0, sizeof(str_tmp)); 236 strncpy(str_tmp, ptr_env+pos1+1, 237 (pos2-pos1-1)*sizeof(char)); 238 gpio_s0 = (unsigned char)simple_strtoul(str_tmp, NULL, 239 0); 240 241 gpio_direction_output(gpio_n, gpio_s0); 242 243 } else { 244 /* get pin state 1 and set */ 245 memset(str_tmp, 0, sizeof(str_tmp)); 246 strcpy(str_tmp, ptr_env+pos2+1); 247 gpio_s1 = (unsigned char)simple_strtoul(str_tmp, NULL, 248 0); 249 gpio_direction_output(gpio_n, gpio_s1); 250 } 251 } /* loop through defined led in environment */ 252 } 253 254 static int do_board_led(cmd_tbl_t *cmdtp, int flag, int argc, 255 char *const argv[]) 256 { 257 if (argc != 2) 258 return CMD_RET_USAGE; 259 if ((unsigned char)simple_strtoul(argv[1], NULL, 0) == STARTUP) 260 set_env_gpios(0); 261 else 262 set_env_gpios(1); 263 return 0; 264 }; 265 266 U_BOOT_CMD( 267 draco_led, CONFIG_SYS_MAXARGS, 2, do_board_led, 268 "Set LEDs defined in environment", 269 "<0|1>" 270 ); 271 #endif /* !CONFIG_SPL_BUILD */ 272