upstream u-boot with additional patches for our devices/boards:
https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ;
Gbit ethernet patch for some LIME2 revisions ;
with SPI flash support
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271 lines
5.8 KiB
271 lines
5.8 KiB
/*
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* Common board functions for siemens AM335X based boards
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* (C) Copyright 2013 Siemens Schweiz AG
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* (C) Heiko Schocher, DENX Software Engineering, hs@denx.de.
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*
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* Based on:
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* U-Boot file:/board/ti/am335x/board.c
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* Copyright (C) 2011, Texas Instruments, Incorporated - http://www.ti.com/
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <errno.h>
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#include <spl.h>
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#include <asm/arch/cpu.h>
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#include <asm/arch/hardware.h>
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#include <asm/arch/omap.h>
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#include <asm/arch/ddr_defs.h>
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#include <asm/arch/clock.h>
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#include <asm/arch/gpio.h>
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#include <asm/arch/mmc_host_def.h>
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#include <asm/arch/sys_proto.h>
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#include <asm/io.h>
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#include <asm/emif.h>
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#include <asm/gpio.h>
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#include <i2c.h>
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#include <miiphy.h>
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#include <cpsw.h>
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#include <watchdog.h>
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#include <asm/mach-types.h>
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#include "../common/factoryset.h"
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DECLARE_GLOBAL_DATA_PTR;
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#ifdef CONFIG_SPL_BUILD
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void set_uart_mux_conf(void)
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{
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enable_uart0_pin_mux();
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}
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void set_mux_conf_regs(void)
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{
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/* Initalize the board header */
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enable_i2c0_pin_mux();
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i2c_set_bus_num(0);
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/* enable early the console */
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gd->baudrate = CONFIG_BAUDRATE;
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serial_init();
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gd->have_console = 1;
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if (read_eeprom() < 0)
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puts("Could not get board ID.\n");
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enable_board_pin_mux();
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}
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void sdram_init(void)
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{
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spl_siemens_board_init();
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board_init_ddr();
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return;
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}
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#endif /* #ifdef CONFIG_SPL_BUILD */
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#ifndef CONFIG_SPL_BUILD
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/*
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* Basic board specific setup. Pinmux has been handled already.
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*/
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int board_init(void)
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{
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#if defined(CONFIG_HW_WATCHDOG)
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hw_watchdog_init();
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#endif /* defined(CONFIG_HW_WATCHDOG) */
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i2c_set_bus_num(0);
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if (read_eeprom() < 0)
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puts("Could not get board ID.\n");
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#ifdef CONFIG_MACH_TYPE
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gd->bd->bi_arch_number = CONFIG_MACH_TYPE;
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#endif
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gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
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#ifdef CONFIG_FACTORYSET
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factoryset_read_eeprom(CONFIG_SYS_I2C_EEPROM_ADDR);
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#endif
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gpmc_init();
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#ifdef CONFIG_NAND_CS_INIT
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board_nand_cs_init();
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#endif
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#ifdef CONFIG_VIDEO
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board_video_init();
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#endif
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return 0;
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}
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#endif /* #ifndef CONFIG_SPL_BUILD */
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#define OSC (V_OSCK/1000000)
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const struct dpll_params dpll_ddr = {
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DDR_PLL_FREQ, OSC-1, 1, -1, -1, -1, -1};
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const struct dpll_params *get_dpll_ddr_params(void)
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{
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return &dpll_ddr;
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}
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#ifndef CONFIG_SPL_BUILD
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#define MAX_NR_LEDS 10
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#define MAX_PIN_NUMBER 128
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#define STARTUP 0
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#if defined(BOARD_DFU_BUTTON_GPIO)
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unsigned char get_button_state(char * const envname, unsigned char def)
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{
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int button = 0;
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int gpio;
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char *ptr_env;
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/* If button is not found we take default */
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ptr_env = env_get(envname);
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if (NULL == ptr_env) {
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gpio = def;
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} else {
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gpio = (unsigned char)simple_strtoul(ptr_env, NULL, 0);
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if (gpio > MAX_PIN_NUMBER)
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gpio = def;
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}
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gpio_request(gpio, "");
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gpio_direction_input(gpio);
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if (gpio_get_value(gpio))
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button = 1;
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else
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button = 0;
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gpio_free(gpio);
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return button;
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}
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/**
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* This command returns the status of the user button on
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* Input - none
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* Returns - 1 if button is held down
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* 0 if button is not held down
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*/
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static int
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do_userbutton(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
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{
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int button = 0;
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button = get_button_state("button_dfu0", BOARD_DFU_BUTTON_GPIO);
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button |= get_button_state("button_dfu1", BOARD_DFU_BUTTON_GPIO);
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return button;
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}
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U_BOOT_CMD(
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dfubutton, CONFIG_SYS_MAXARGS, 1, do_userbutton,
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"Return the status of the DFU button",
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""
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);
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#endif
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static int
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do_usertestwdt(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
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{
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printf("\n\n\n Go into infinite loop\n\n\n");
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while (1)
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;
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return 0;
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};
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U_BOOT_CMD(
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testwdt, CONFIG_SYS_MAXARGS, 1, do_usertestwdt,
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"Sends U-Boot into infinite loop",
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""
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);
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/**
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* Get led gpios from env and set them.
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* The led define in environment need to need to be of the form ledN=NN,S0,S1
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* where N is an unsigned integer from 0 to 9 and S0 and S1 is 0 or 1. S0
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* defines the startup state of the led, S1 the special state of the led when
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* it enters e.g. dfu mode.
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*/
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void set_env_gpios(unsigned char state)
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{
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char *ptr_env;
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char str_tmp[5]; /* must contain "ledX"*/
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char num[1];
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unsigned char i, idx, pos1, pos2, ccount;
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unsigned char gpio_n, gpio_s0, gpio_s1;
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for (i = 0; i < MAX_NR_LEDS; i++) {
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strcpy(str_tmp, "led");
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sprintf(num, "%d", i);
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strcat(str_tmp, num);
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/* If env var is not found we stop */
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ptr_env = env_get(str_tmp);
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if (NULL == ptr_env)
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break;
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/* Find sperators position */
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pos1 = 0;
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pos2 = 0;
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ccount = 0;
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for (idx = 0; ptr_env[idx] != '\0'; idx++) {
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if (ptr_env[idx] == ',') {
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if (ccount++ < 1)
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pos1 = idx;
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else
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pos2 = idx;
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}
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}
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/* Bad led description skip this definition */
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if (pos2 <= pos1 || ccount > 2)
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continue;
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/* Get pin number and request gpio */
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memset(str_tmp, 0, sizeof(str_tmp));
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strncpy(str_tmp, ptr_env, pos1*sizeof(char));
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gpio_n = (unsigned char)simple_strtoul(str_tmp, NULL, 0);
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/* Invalid gpio number skip definition */
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if (gpio_n > MAX_PIN_NUMBER)
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continue;
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gpio_request(gpio_n, "");
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if (state == STARTUP) {
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/* get pin state 0 and set */
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memset(str_tmp, 0, sizeof(str_tmp));
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strncpy(str_tmp, ptr_env+pos1+1,
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(pos2-pos1-1)*sizeof(char));
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gpio_s0 = (unsigned char)simple_strtoul(str_tmp, NULL,
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0);
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gpio_direction_output(gpio_n, gpio_s0);
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} else {
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/* get pin state 1 and set */
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memset(str_tmp, 0, sizeof(str_tmp));
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strcpy(str_tmp, ptr_env+pos2+1);
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gpio_s1 = (unsigned char)simple_strtoul(str_tmp, NULL,
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0);
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gpio_direction_output(gpio_n, gpio_s1);
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}
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} /* loop through defined led in environment */
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}
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static int do_board_led(cmd_tbl_t *cmdtp, int flag, int argc,
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char *const argv[])
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{
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if (argc != 2)
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return CMD_RET_USAGE;
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if ((unsigned char)simple_strtoul(argv[1], NULL, 0) == STARTUP)
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set_env_gpios(0);
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else
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set_env_gpios(1);
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return 0;
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};
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U_BOOT_CMD(
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draco_led, CONFIG_SYS_MAXARGS, 2, do_board_led,
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"Set LEDs defined in environment",
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"<0|1>"
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);
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#endif /* !CONFIG_SPL_BUILD */
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