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 = CONFIG_SYS_SDRAM_BASE + 0x100;
89
90 #ifdef CONFIG_FACTORYSET
91 factoryset_read_eeprom(FACTORYSET_EEPROM_ADDR);
92 #endif
93
94 gpmc_init();
95
96 #ifdef CONFIG_NAND_CS_INIT
97 board_nand_cs_init();
98 #endif
99 #ifdef CONFIG_VIDEO
100 board_video_init();
101 #endif
102
103 return 0;
104 }
105 #endif /* #ifndef CONFIG_SPL_BUILD */
106
107 #define OSC (V_OSCK/1000000)
108 const struct dpll_params dpll_ddr = {
109 DDR_PLL_FREQ, OSC-1, 1, -1, -1, -1, -1};
110
get_dpll_ddr_params(void)111 const struct dpll_params *get_dpll_ddr_params(void)
112 {
113 return &dpll_ddr;
114 }
115
116 #ifndef CONFIG_SPL_BUILD
117
118 #define MAX_NR_LEDS 10
119 #define MAX_PIN_NUMBER 128
120 #define STARTUP 0
121
122 #if defined(BOARD_DFU_BUTTON_GPIO)
get_button_state(char * const envname,unsigned char def)123 unsigned char get_button_state(char * const envname, unsigned char def)
124 {
125 int button = 0;
126 int gpio;
127 char *ptr_env;
128
129 /* If button is not found we take default */
130 ptr_env = env_get(envname);
131 if (NULL == ptr_env) {
132 gpio = def;
133 } else {
134 gpio = (unsigned char)simple_strtoul(ptr_env, NULL, 0);
135 if (gpio > MAX_PIN_NUMBER)
136 gpio = def;
137 }
138
139 gpio_request(gpio, "");
140 gpio_direction_input(gpio);
141 if (gpio_get_value(gpio))
142 button = 1;
143 else
144 button = 0;
145
146 gpio_free(gpio);
147
148 return button;
149 }
150 /**
151 * This command returns the status of the user button on
152 * Input - none
153 * Returns - 1 if button is held down
154 * 0 if button is not held down
155 */
156 static int
do_userbutton(struct cmd_tbl * cmdtp,int flag,int argc,char * const argv[])157 do_userbutton(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
158 {
159 int button = 0;
160 button = get_button_state("button_dfu0", BOARD_DFU_BUTTON_GPIO);
161 button |= get_button_state("button_dfu1", BOARD_DFU_BUTTON_GPIO);
162 return button;
163 }
164
165 U_BOOT_CMD(
166 dfubutton, CONFIG_SYS_MAXARGS, 1, do_userbutton,
167 "Return the status of the DFU button",
168 ""
169 );
170 #endif
171
172 static int
do_usertestwdt(struct cmd_tbl * cmdtp,int flag,int argc,char * const argv[])173 do_usertestwdt(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
174 {
175 printf("\n\n\n Go into infinite loop\n\n\n");
176 while (1)
177 ;
178 return 0;
179 };
180
181 U_BOOT_CMD(
182 testwdt, CONFIG_SYS_MAXARGS, 1, do_usertestwdt,
183 "Sends U-Boot into infinite loop",
184 ""
185 );
186
187 /**
188 * Get led gpios from env and set them.
189 * The led define in environment need to need to be of the form ledN=NN,S0,S1
190 * where N is an unsigned integer from 0 to 9 and S0 and S1 is 0 or 1. S0
191 * defines the startup state of the led, S1 the special state of the led when
192 * it enters e.g. dfu mode.
193 */
set_env_gpios(unsigned char state)194 void set_env_gpios(unsigned char state)
195 {
196 char *ptr_env;
197 char str_tmp[5]; /* must contain "ledX"*/
198 unsigned char i, idx, pos1, pos2, ccount;
199 unsigned char gpio_n, gpio_s0, gpio_s1;
200
201 for (i = 0; i < MAX_NR_LEDS; i++) {
202 sprintf(str_tmp, "led%d", i);
203
204 /* If env var is not found we stop */
205 ptr_env = env_get(str_tmp);
206 if (NULL == ptr_env)
207 break;
208
209 /* Find sperators position */
210 pos1 = 0;
211 pos2 = 0;
212 ccount = 0;
213 for (idx = 0; ptr_env[idx] != '\0'; idx++) {
214 if (ptr_env[idx] == ',') {
215 if (ccount++ < 1)
216 pos1 = idx;
217 else
218 pos2 = idx;
219 }
220 }
221 /* Bad led description skip this definition */
222 if (pos2 <= pos1 || ccount > 2)
223 continue;
224
225 /* Get pin number and request gpio */
226 memset(str_tmp, 0, sizeof(str_tmp));
227 strncpy(str_tmp, ptr_env, pos1*sizeof(char));
228 gpio_n = (unsigned char)simple_strtoul(str_tmp, NULL, 0);
229
230 /* Invalid gpio number skip definition */
231 if (gpio_n > MAX_PIN_NUMBER)
232 continue;
233
234 gpio_request(gpio_n, "");
235
236 if (state == STARTUP) {
237 /* get pin state 0 and set */
238 memset(str_tmp, 0, sizeof(str_tmp));
239 strncpy(str_tmp, ptr_env+pos1+1,
240 (pos2-pos1-1)*sizeof(char));
241 gpio_s0 = (unsigned char)simple_strtoul(str_tmp, NULL,
242 0);
243
244 gpio_direction_output(gpio_n, gpio_s0);
245
246 } else {
247 /* get pin state 1 and set */
248 memset(str_tmp, 0, sizeof(str_tmp));
249 strcpy(str_tmp, ptr_env+pos2+1);
250 gpio_s1 = (unsigned char)simple_strtoul(str_tmp, NULL,
251 0);
252 gpio_direction_output(gpio_n, gpio_s1);
253 }
254 } /* loop through defined led in environment */
255 }
256
do_board_led(struct cmd_tbl * cmdtp,int flag,int argc,char * const argv[])257 static int do_board_led(struct cmd_tbl *cmdtp, int flag, int argc,
258 char *const argv[])
259 {
260 if (argc != 2)
261 return CMD_RET_USAGE;
262 if ((unsigned char)simple_strtoul(argv[1], NULL, 0) == STARTUP)
263 set_env_gpios(0);
264 else
265 set_env_gpios(1);
266 return 0;
267 };
268
269 U_BOOT_CMD(
270 draco_led, CONFIG_SYS_MAXARGS, 2, do_board_led,
271 "Set LEDs defined in environment",
272 "<0|1>"
273 );
274 #endif /* !CONFIG_SPL_BUILD */
275