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https://github.com/brain-hackers/u-boot-brain
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![Tom Rini](/assets/img/avatar_default.png)
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
271 lines
5.8 KiB
C
271 lines
5.8 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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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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#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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