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 <env.h>
14 #include <errno.h>
15 #include <serial.h>
16 #include <spl.h>
17 #include <asm/arch/cpu.h>
18 #include <asm/arch/hardware.h>
19 #include <asm/arch/omap.h>
20 #include <asm/arch/ddr_defs.h>
21 #include <asm/arch/clock.h>
22 #include <asm/arch/gpio.h>
23 #include <asm/arch/mmc_host_def.h>
24 #include <asm/arch/sys_proto.h>
25 #include <asm/io.h>
26 #include <asm/emif.h>
27 #include <asm/gpio.h>
28 #include <i2c.h>
29 #include <miiphy.h>
30 #include <cpsw.h>
31 #include <watchdog.h>
32 #include <asm/mach-types.h>
33 #include "../common/factoryset.h"
34
35 DECLARE_GLOBAL_DATA_PTR;
36
37 #ifdef CONFIG_SPL_BUILD
set_uart_mux_conf(void)38 void set_uart_mux_conf(void)
39 {
40 enable_uart0_pin_mux();
41 }
42
set_mux_conf_regs(void)43 void set_mux_conf_regs(void)
44 {
45 /* Initalize the board header */
46 enable_i2c0_pin_mux();
47 i2c_set_bus_num(0);
48
49 /* enable early the console */
50 gd->baudrate = CONFIG_BAUDRATE;
51 serial_init();
52 gd->have_console = 1;
53 if (read_eeprom() < 0)
54 puts("Could not get board ID.\n");
55
56 enable_board_pin_mux();
57 }
58
sdram_init(void)59 void sdram_init(void)
60 {
61 spl_siemens_board_init();
62 board_init_ddr();
63
64 return;
65 }
66 #endif /* #ifdef CONFIG_SPL_BUILD */
67
68 #ifndef CONFIG_SPL_BUILD
69 /*
70 * Basic board specific setup. Pinmux has been handled already.
71 */
board_init(void)72 int board_init(void)
73 {
74 #if defined(CONFIG_HW_WATCHDOG)
75 hw_watchdog_init();
76 #endif /* defined(CONFIG_HW_WATCHDOG) */
77 i2c_set_bus_num(0);
78 if (read_eeprom() < 0)
79 puts("Could not get board ID.\n");
80 #ifdef CONFIG_MACH_TYPE
81 gd->bd->bi_arch_number = CONFIG_MACH_TYPE;
82 #endif
83 gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
84
85 #ifdef CONFIG_FACTORYSET
86 factoryset_read_eeprom(CONFIG_SYS_I2C_EEPROM_ADDR);
87 #endif
88
89 gpmc_init();
90
91 #ifdef CONFIG_NAND_CS_INIT
92 board_nand_cs_init();
93 #endif
94 #ifdef CONFIG_VIDEO
95 board_video_init();
96 #endif
97
98 return 0;
99 }
100 #endif /* #ifndef CONFIG_SPL_BUILD */
101
102 #define OSC (V_OSCK/1000000)
103 const struct dpll_params dpll_ddr = {
104 DDR_PLL_FREQ, OSC-1, 1, -1, -1, -1, -1};
105
get_dpll_ddr_params(void)106 const struct dpll_params *get_dpll_ddr_params(void)
107 {
108 return &dpll_ddr;
109 }
110
111 #ifndef CONFIG_SPL_BUILD
112
113 #define MAX_NR_LEDS 10
114 #define MAX_PIN_NUMBER 128
115 #define STARTUP 0
116
117 #if defined(BOARD_DFU_BUTTON_GPIO)
get_button_state(char * const envname,unsigned char def)118 unsigned char get_button_state(char * const envname, unsigned char def)
119 {
120 int button = 0;
121 int gpio;
122 char *ptr_env;
123
124 /* If button is not found we take default */
125 ptr_env = env_get(envname);
126 if (NULL == ptr_env) {
127 gpio = def;
128 } else {
129 gpio = (unsigned char)simple_strtoul(ptr_env, NULL, 0);
130 if (gpio > MAX_PIN_NUMBER)
131 gpio = def;
132 }
133
134 gpio_request(gpio, "");
135 gpio_direction_input(gpio);
136 if (gpio_get_value(gpio))
137 button = 1;
138 else
139 button = 0;
140
141 gpio_free(gpio);
142
143 return button;
144 }
145 /**
146 * This command returns the status of the user button on
147 * Input - none
148 * Returns - 1 if button is held down
149 * 0 if button is not held down
150 */
151 static int
do_userbutton(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])152 do_userbutton(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
153 {
154 int button = 0;
155 button = get_button_state("button_dfu0", BOARD_DFU_BUTTON_GPIO);
156 button |= get_button_state("button_dfu1", BOARD_DFU_BUTTON_GPIO);
157 return button;
158 }
159
160 U_BOOT_CMD(
161 dfubutton, CONFIG_SYS_MAXARGS, 1, do_userbutton,
162 "Return the status of the DFU button",
163 ""
164 );
165 #endif
166
167 static int
do_usertestwdt(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])168 do_usertestwdt(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
169 {
170 printf("\n\n\n Go into infinite loop\n\n\n");
171 while (1)
172 ;
173 return 0;
174 };
175
176 U_BOOT_CMD(
177 testwdt, CONFIG_SYS_MAXARGS, 1, do_usertestwdt,
178 "Sends U-Boot into infinite loop",
179 ""
180 );
181
182 /**
183 * Get led gpios from env and set them.
184 * The led define in environment need to need to be of the form ledN=NN,S0,S1
185 * where N is an unsigned integer from 0 to 9 and S0 and S1 is 0 or 1. S0
186 * defines the startup state of the led, S1 the special state of the led when
187 * it enters e.g. dfu mode.
188 */
set_env_gpios(unsigned char state)189 void set_env_gpios(unsigned char state)
190 {
191 char *ptr_env;
192 char str_tmp[5]; /* must contain "ledX"*/
193 unsigned char i, idx, pos1, pos2, ccount;
194 unsigned char gpio_n, gpio_s0, gpio_s1;
195
196 for (i = 0; i < MAX_NR_LEDS; i++) {
197 sprintf(str_tmp, "led%d", i);
198
199 /* If env var is not found we stop */
200 ptr_env = env_get(str_tmp);
201 if (NULL == ptr_env)
202 break;
203
204 /* Find sperators position */
205 pos1 = 0;
206 pos2 = 0;
207 ccount = 0;
208 for (idx = 0; ptr_env[idx] != '\0'; idx++) {
209 if (ptr_env[idx] == ',') {
210 if (ccount++ < 1)
211 pos1 = idx;
212 else
213 pos2 = idx;
214 }
215 }
216 /* Bad led description skip this definition */
217 if (pos2 <= pos1 || ccount > 2)
218 continue;
219
220 /* Get pin number and request gpio */
221 memset(str_tmp, 0, sizeof(str_tmp));
222 strncpy(str_tmp, ptr_env, pos1*sizeof(char));
223 gpio_n = (unsigned char)simple_strtoul(str_tmp, NULL, 0);
224
225 /* Invalid gpio number skip definition */
226 if (gpio_n > MAX_PIN_NUMBER)
227 continue;
228
229 gpio_request(gpio_n, "");
230
231 if (state == STARTUP) {
232 /* get pin state 0 and set */
233 memset(str_tmp, 0, sizeof(str_tmp));
234 strncpy(str_tmp, ptr_env+pos1+1,
235 (pos2-pos1-1)*sizeof(char));
236 gpio_s0 = (unsigned char)simple_strtoul(str_tmp, NULL,
237 0);
238
239 gpio_direction_output(gpio_n, gpio_s0);
240
241 } else {
242 /* get pin state 1 and set */
243 memset(str_tmp, 0, sizeof(str_tmp));
244 strcpy(str_tmp, ptr_env+pos2+1);
245 gpio_s1 = (unsigned char)simple_strtoul(str_tmp, NULL,
246 0);
247 gpio_direction_output(gpio_n, gpio_s1);
248 }
249 } /* loop through defined led in environment */
250 }
251
do_board_led(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])252 static int do_board_led(cmd_tbl_t *cmdtp, int flag, int argc,
253 char *const argv[])
254 {
255 if (argc != 2)
256 return CMD_RET_USAGE;
257 if ((unsigned char)simple_strtoul(argv[1], NULL, 0) == STARTUP)
258 set_env_gpios(0);
259 else
260 set_env_gpios(1);
261 return 0;
262 };
263
264 U_BOOT_CMD(
265 draco_led, CONFIG_SYS_MAXARGS, 2, do_board_led,
266 "Set LEDs defined in environment",
267 "<0|1>"
268 );
269 #endif /* !CONFIG_SPL_BUILD */
270