// SPDX-License-Identifier: GPL-2.0+ /* * Common board functions for siemens AM335X based boards * (C) Copyright 2013 Siemens Schweiz AG * (C) Heiko Schocher, DENX Software Engineering, hs@denx.de. * * Based on: * U-Boot file:/board/ti/am335x/board.c * Copyright (C) 2011, Texas Instruments, Incorporated - http://www.ti.com/ */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "../common/factoryset.h" DECLARE_GLOBAL_DATA_PTR; #ifdef CONFIG_SPL_BUILD void set_uart_mux_conf(void) { enable_uart0_pin_mux(); } void set_mux_conf_regs(void) { /* Initalize the board header */ enable_i2c0_pin_mux(); i2c_set_bus_num(0); /* enable early the console */ gd->baudrate = CONFIG_BAUDRATE; serial_init(); gd->have_console = 1; if (read_eeprom() < 0) puts("Could not get board ID.\n"); enable_board_pin_mux(); } void sdram_init(void) { spl_siemens_board_init(); board_init_ddr(); return; } #endif /* #ifdef CONFIG_SPL_BUILD */ #ifndef CONFIG_SPL_BUILD #define FACTORYSET_EEPROM_ADDR 0x50 /* * Basic board specific setup. Pinmux has been handled already. */ int board_init(void) { #if defined(CONFIG_HW_WATCHDOG) hw_watchdog_init(); #endif /* defined(CONFIG_HW_WATCHDOG) */ i2c_set_bus_num(0); if (read_eeprom() < 0) puts("Could not get board ID.\n"); #ifdef CONFIG_MACH_TYPE gd->bd->bi_arch_number = CONFIG_MACH_TYPE; #endif gd->bd->bi_boot_params = CFG_SYS_SDRAM_BASE + 0x100; #ifdef CONFIG_FACTORYSET factoryset_read_eeprom(FACTORYSET_EEPROM_ADDR); #endif gpmc_init(); #if CONFIG_IS_ENABLED(NAND_CS_INIT) board_nand_cs_init(); #endif return 0; } #endif /* #ifndef CONFIG_SPL_BUILD */ #define OSC (V_OSCK/1000000) const struct dpll_params dpll_ddr = { DDR_PLL_FREQ, OSC-1, 1, -1, -1, -1, -1}; const struct dpll_params *get_dpll_ddr_params(void) { return &dpll_ddr; } #ifndef CONFIG_SPL_BUILD #define MAX_NR_LEDS 10 #define MAX_PIN_NUMBER 128 #define STARTUP 0 #if defined(BOARD_DFU_BUTTON_GPIO) unsigned char get_button_state(char * const envname, unsigned char def) { int button = 0; int gpio; char *ptr_env; /* If button is not found we take default */ ptr_env = env_get(envname); if (NULL == ptr_env) { gpio = def; } else { gpio = (unsigned char)simple_strtoul(ptr_env, NULL, 0); if (gpio > MAX_PIN_NUMBER) gpio = def; } gpio_request(gpio, ""); gpio_direction_input(gpio); if (gpio_get_value(gpio)) button = 1; else button = 0; gpio_free(gpio); return button; } /** * This command returns the status of the user button on * Input - none * Returns - 1 if button is held down * 0 if button is not held down */ static int do_userbutton(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]) { int button = 0; button = get_button_state("button_dfu0", BOARD_DFU_BUTTON_GPIO); button |= get_button_state("button_dfu1", BOARD_DFU_BUTTON_GPIO); return button; } U_BOOT_CMD( dfubutton, CONFIG_SYS_MAXARGS, 1, do_userbutton, "Return the status of the DFU button", "" ); #endif static int do_usertestwdt(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]) { printf("\n\n\n Go into infinite loop\n\n\n"); while (1) ; return 0; }; U_BOOT_CMD( testwdt, CONFIG_SYS_MAXARGS, 1, do_usertestwdt, "Sends U-Boot into infinite loop", "" ); /** * Get led gpios from env and set them. * The led define in environment need to need to be of the form ledN=NN,S0,S1 * where N is an unsigned integer from 0 to 9 and S0 and S1 is 0 or 1. S0 * defines the startup state of the led, S1 the special state of the led when * it enters e.g. dfu mode. */ void set_env_gpios(unsigned char state) { char *ptr_env; char str_tmp[5]; /* must contain "ledX"*/ unsigned char i, idx, pos1, pos2, ccount; unsigned char gpio_n, gpio_s0, gpio_s1; for (i = 0; i < MAX_NR_LEDS; i++) { sprintf(str_tmp, "led%d", i); /* If env var is not found we stop */ ptr_env = env_get(str_tmp); if (NULL == ptr_env) break; /* Find sperators position */ pos1 = 0; pos2 = 0; ccount = 0; for (idx = 0; ptr_env[idx] != '\0'; idx++) { if (ptr_env[idx] == ',') { if (ccount++ < 1) pos1 = idx; else pos2 = idx; } } /* Bad led description skip this definition */ if (pos2 <= pos1 || ccount > 2) continue; /* Get pin number and request gpio */ memset(str_tmp, 0, sizeof(str_tmp)); strncpy(str_tmp, ptr_env, pos1*sizeof(char)); gpio_n = (unsigned char)simple_strtoul(str_tmp, NULL, 0); /* Invalid gpio number skip definition */ if (gpio_n > MAX_PIN_NUMBER) continue; gpio_request(gpio_n, ""); if (state == STARTUP) { /* get pin state 0 and set */ memset(str_tmp, 0, sizeof(str_tmp)); strncpy(str_tmp, ptr_env+pos1+1, (pos2-pos1-1)*sizeof(char)); gpio_s0 = (unsigned char)simple_strtoul(str_tmp, NULL, 0); gpio_direction_output(gpio_n, gpio_s0); } else { /* get pin state 1 and set */ memset(str_tmp, 0, sizeof(str_tmp)); strcpy(str_tmp, ptr_env+pos2+1); gpio_s1 = (unsigned char)simple_strtoul(str_tmp, NULL, 0); gpio_direction_output(gpio_n, gpio_s1); } } /* loop through defined led in environment */ } static int do_board_led(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]) { if (argc != 2) return CMD_RET_USAGE; if ((unsigned char)simple_strtoul(argv[1], NULL, 0) == STARTUP) set_env_gpios(0); else set_env_gpios(1); return 0; }; U_BOOT_CMD( draco_led, CONFIG_SYS_MAXARGS, 2, do_board_led, "Set LEDs defined in environment", "<0|1>" ); #endif /* !CONFIG_SPL_BUILD */