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 */ 271