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