xref: /openbmc/u-boot/board/siemens/common/board.c (revision e8f80a5a)
1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  * Common board functions for siemens AM335X based boards
4  * (C) Copyright 2013 Siemens Schweiz AG
5  * (C) Heiko Schocher, DENX Software Engineering, hs@denx.de.
6  *
7  * Based on:
8  * U-Boot file:/board/ti/am335x/board.c
9  * Copyright (C) 2011, Texas Instruments, Incorporated - http://www.ti.com/
10  */
11 
12 #include <common.h>
13 #include <errno.h>
14 #include <spl.h>
15 #include <asm/arch/cpu.h>
16 #include <asm/arch/hardware.h>
17 #include <asm/arch/omap.h>
18 #include <asm/arch/ddr_defs.h>
19 #include <asm/arch/clock.h>
20 #include <asm/arch/gpio.h>
21 #include <asm/arch/mmc_host_def.h>
22 #include <asm/arch/sys_proto.h>
23 #include <asm/io.h>
24 #include <asm/emif.h>
25 #include <asm/gpio.h>
26 #include <i2c.h>
27 #include <miiphy.h>
28 #include <cpsw.h>
29 #include <watchdog.h>
30 #include <asm/mach-types.h>
31 #include "../common/factoryset.h"
32 
33 DECLARE_GLOBAL_DATA_PTR;
34 
35 #ifdef CONFIG_SPL_BUILD
set_uart_mux_conf(void)36 void set_uart_mux_conf(void)
37 {
38 	enable_uart0_pin_mux();
39 }
40 
set_mux_conf_regs(void)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 
sdram_init(void)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  */
board_init(void)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 
get_dpll_ddr_params(void)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)
get_button_state(char * const envname,unsigned char def)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 = env_get(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
do_userbutton(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])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
do_usertestwdt(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])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  */
set_env_gpios(unsigned char state)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 = env_get(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 
do_board_led(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])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