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 <command.h>
14 #include <env.h>
15 #include <errno.h>
16 #include <init.h>
17 #include <malloc.h>
18 #include <serial.h>
19 #include <spl.h>
20 #include <asm/arch/cpu.h>
21 #include <asm/arch/hardware.h>
22 #include <asm/arch/omap.h>
23 #include <asm/arch/ddr_defs.h>
24 #include <asm/arch/clock.h>
25 #include <asm/arch/gpio.h>
26 #include <asm/arch/mmc_host_def.h>
27 #include <asm/arch/sys_proto.h>
28 #include <asm/global_data.h>
29 #include <asm/io.h>
30 #include <asm/emif.h>
31 #include <asm/gpio.h>
32 #include <i2c.h>
33 #include <miiphy.h>
34 #include <cpsw.h>
35 #include <watchdog.h>
36 #include <asm/mach-types.h>
37 #include "../common/factoryset.h"
38
39 DECLARE_GLOBAL_DATA_PTR;
40
41 #ifdef CONFIG_SPL_BUILD
set_uart_mux_conf(void)42 void set_uart_mux_conf(void)
43 {
44 enable_uart0_pin_mux();
45 }
46
set_mux_conf_regs(void)47 void set_mux_conf_regs(void)
48 {
49 /* Initalize the board header */
50 enable_i2c0_pin_mux();
51 i2c_set_bus_num(0);
52
53 /* enable early the console */
54 gd->baudrate = CONFIG_BAUDRATE;
55 serial_init();
56 gd->have_console = 1;
57 if (read_eeprom() < 0)
58 puts("Could not get board ID.\n");
59
60 enable_board_pin_mux();
61 }
62
sdram_init(void)63 void sdram_init(void)
64 {
65 spl_siemens_board_init();
66 board_init_ddr();
67
68 return;
69 }
70 #endif /* #ifdef CONFIG_SPL_BUILD */
71
72 #ifndef CONFIG_SPL_BUILD
73 #define FACTORYSET_EEPROM_ADDR 0x50
74 /*
75 * Basic board specific setup. Pinmux has been handled already.
76 */
board_init(void)77 int board_init(void)
78 {
79 #if defined(CONFIG_HW_WATCHDOG)
80 hw_watchdog_init();
81 #endif /* defined(CONFIG_HW_WATCHDOG) */
82 i2c_set_bus_num(0);
83 if (read_eeprom() < 0)
84 puts("Could not get board ID.\n");
85 #ifdef CONFIG_MACH_TYPE
86 gd->bd->bi_arch_number = CONFIG_MACH_TYPE;
87 #endif
88 gd->bd->bi_boot_params = CFG_SYS_SDRAM_BASE + 0x100;
89
90 #ifdef CONFIG_FACTORYSET
91 factoryset_read_eeprom(FACTORYSET_EEPROM_ADDR);
92 #endif
93
94 gpmc_init();
95
96 #if CONFIG_IS_ENABLED(NAND_CS_INIT)
97 board_nand_cs_init();
98 #endif
99
100 return 0;
101 }
102 #endif /* #ifndef CONFIG_SPL_BUILD */
103
104 #define OSC (V_OSCK/1000000)
105 const struct dpll_params dpll_ddr = {
106 DDR_PLL_FREQ, OSC-1, 1, -1, -1, -1, -1};
107
get_dpll_ddr_params(void)108 const struct dpll_params *get_dpll_ddr_params(void)
109 {
110 return &dpll_ddr;
111 }
112
113 #ifndef CONFIG_SPL_BUILD
114
115 #define MAX_NR_LEDS 10
116 #define MAX_PIN_NUMBER 128
117 #define STARTUP 0
118
119 #if defined(BOARD_DFU_BUTTON_GPIO)
get_button_state(char * const envname,unsigned char def)120 unsigned char get_button_state(char * const envname, unsigned char def)
121 {
122 int button = 0;
123 int gpio;
124 char *ptr_env;
125
126 /* If button is not found we take default */
127 ptr_env = env_get(envname);
128 if (NULL == ptr_env) {
129 gpio = def;
130 } else {
131 gpio = (unsigned char)simple_strtoul(ptr_env, NULL, 0);
132 if (gpio > MAX_PIN_NUMBER)
133 gpio = def;
134 }
135
136 gpio_request(gpio, "");
137 gpio_direction_input(gpio);
138 if (gpio_get_value(gpio))
139 button = 1;
140 else
141 button = 0;
142
143 gpio_free(gpio);
144
145 return button;
146 }
147 /**
148 * This command returns the status of the user button on
149 * Input - none
150 * Returns - 1 if button is held down
151 * 0 if button is not held down
152 */
153 static int
do_userbutton(struct cmd_tbl * cmdtp,int flag,int argc,char * const argv[])154 do_userbutton(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
155 {
156 int button = 0;
157 button = get_button_state("button_dfu0", BOARD_DFU_BUTTON_GPIO);
158 button |= get_button_state("button_dfu1", BOARD_DFU_BUTTON_GPIO);
159 return button;
160 }
161
162 U_BOOT_CMD(
163 dfubutton, CONFIG_SYS_MAXARGS, 1, do_userbutton,
164 "Return the status of the DFU button",
165 ""
166 );
167 #endif
168
169 static int
do_usertestwdt(struct cmd_tbl * cmdtp,int flag,int argc,char * const argv[])170 do_usertestwdt(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
171 {
172 printf("\n\n\n Go into infinite loop\n\n\n");
173 while (1)
174 ;
175 return 0;
176 };
177
178 U_BOOT_CMD(
179 testwdt, CONFIG_SYS_MAXARGS, 1, do_usertestwdt,
180 "Sends U-Boot into infinite loop",
181 ""
182 );
183
184 /**
185 * Get led gpios from env and set them.
186 * The led define in environment need to need to be of the form ledN=NN,S0,S1
187 * where N is an unsigned integer from 0 to 9 and S0 and S1 is 0 or 1. S0
188 * defines the startup state of the led, S1 the special state of the led when
189 * it enters e.g. dfu mode.
190 */
set_env_gpios(unsigned char state)191 void set_env_gpios(unsigned char state)
192 {
193 char *ptr_env;
194 char str_tmp[5]; /* must contain "ledX"*/
195 unsigned char i, idx, pos1, pos2, ccount;
196 unsigned char gpio_n, gpio_s0, gpio_s1;
197
198 for (i = 0; i < MAX_NR_LEDS; i++) {
199 sprintf(str_tmp, "led%d", i);
200
201 /* If env var is not found we stop */
202 ptr_env = env_get(str_tmp);
203 if (NULL == ptr_env)
204 break;
205
206 /* Find sperators position */
207 pos1 = 0;
208 pos2 = 0;
209 ccount = 0;
210 for (idx = 0; ptr_env[idx] != '\0'; idx++) {
211 if (ptr_env[idx] == ',') {
212 if (ccount++ < 1)
213 pos1 = idx;
214 else
215 pos2 = idx;
216 }
217 }
218 /* Bad led description skip this definition */
219 if (pos2 <= pos1 || ccount > 2)
220 continue;
221
222 /* Get pin number and request gpio */
223 memset(str_tmp, 0, sizeof(str_tmp));
224 strncpy(str_tmp, ptr_env, pos1*sizeof(char));
225 gpio_n = (unsigned char)simple_strtoul(str_tmp, NULL, 0);
226
227 /* Invalid gpio number skip definition */
228 if (gpio_n > MAX_PIN_NUMBER)
229 continue;
230
231 gpio_request(gpio_n, "");
232
233 if (state == STARTUP) {
234 /* get pin state 0 and set */
235 memset(str_tmp, 0, sizeof(str_tmp));
236 strncpy(str_tmp, ptr_env+pos1+1,
237 (pos2-pos1-1)*sizeof(char));
238 gpio_s0 = (unsigned char)simple_strtoul(str_tmp, NULL,
239 0);
240
241 gpio_direction_output(gpio_n, gpio_s0);
242
243 } else {
244 /* get pin state 1 and set */
245 memset(str_tmp, 0, sizeof(str_tmp));
246 strcpy(str_tmp, ptr_env+pos2+1);
247 gpio_s1 = (unsigned char)simple_strtoul(str_tmp, NULL,
248 0);
249 gpio_direction_output(gpio_n, gpio_s1);
250 }
251 } /* loop through defined led in environment */
252 }
253
do_board_led(struct cmd_tbl * cmdtp,int flag,int argc,char * const argv[])254 static int do_board_led(struct cmd_tbl *cmdtp, int flag, int argc,
255 char *const argv[])
256 {
257 if (argc != 2)
258 return CMD_RET_USAGE;
259 if ((unsigned char)simple_strtoul(argv[1], NULL, 0) == STARTUP)
260 set_env_gpios(0);
261 else
262 set_env_gpios(1);
263 return 0;
264 };
265
266 U_BOOT_CMD(
267 draco_led, CONFIG_SYS_MAXARGS, 2, do_board_led,
268 "Set LEDs defined in environment",
269 "<0|1>"
270 );
271 #endif /* !CONFIG_SPL_BUILD */
272