xref: /openbmc/u-boot/board/siemens/common/board.c (revision e6469f39)
1 /*
2  * Common board functions for siemens AM335X based boards
3  * (C) Copyright 2013 Siemens Schweiz AG
4  * (C) Heiko Schocher, DENX Software Engineering, hs@denx.de.
5  *
6  * Based on:
7  * U-Boot file:/board/ti/am335x/board.c
8  * Copyright (C) 2011, Texas Instruments, Incorporated - http://www.ti.com/
9  *
10  * SPDX-License-Identifier:	GPL-2.0+
11  */
12 
13 #include <common.h>
14 #include <errno.h>
15 #include <spl.h>
16 #include <asm/arch/cpu.h>
17 #include <asm/arch/hardware.h>
18 #include <asm/arch/omap.h>
19 #include <asm/arch/ddr_defs.h>
20 #include <asm/arch/clock.h>
21 #include <asm/arch/gpio.h>
22 #include <asm/arch/mmc_host_def.h>
23 #include <asm/arch/sys_proto.h>
24 #include <asm/io.h>
25 #include <asm/emif.h>
26 #include <asm/gpio.h>
27 #include <i2c.h>
28 #include <miiphy.h>
29 #include <cpsw.h>
30 #include <watchdog.h>
31 #include "../common/factoryset.h"
32 
33 DECLARE_GLOBAL_DATA_PTR;
34 
35 #ifdef CONFIG_SPL_BUILD
36 void set_uart_mux_conf(void)
37 {
38 	enable_uart0_pin_mux();
39 }
40 
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 	if (read_eeprom() < 0)
47 		puts("Could not get board ID.\n");
48 
49 	enable_board_pin_mux();
50 }
51 
52 void sdram_init(void)
53 {
54 	spl_siemens_board_init();
55 	board_init_ddr();
56 
57 	return;
58 }
59 #endif /* #ifdef CONFIG_SPL_BUILD */
60 
61 #ifndef CONFIG_SPL_BUILD
62 /*
63  * Basic board specific setup.  Pinmux has been handled already.
64  */
65 int board_init(void)
66 {
67 #if defined(CONFIG_HW_WATCHDOG)
68 	hw_watchdog_init();
69 #endif /* defined(CONFIG_HW_WATCHDOG) */
70 	i2c_set_bus_num(0);
71 	if (read_eeprom() < 0)
72 		puts("Could not get board ID.\n");
73 
74 	gd->bd->bi_arch_number = CONFIG_MACH_TYPE;
75 	gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
76 
77 #ifdef CONFIG_FACTORYSET
78 	factoryset_read_eeprom(CONFIG_SYS_I2C_EEPROM_ADDR);
79 #endif
80 	gpmc_init();
81 
82 #ifdef CONFIG_VIDEO
83 	board_video_init();
84 #endif
85 
86 	return 0;
87 }
88 #endif /* #ifndef CONFIG_SPL_BUILD */
89 
90 #define OSC	(V_OSCK/1000000)
91 const struct dpll_params dpll_ddr = {
92 		DDR_PLL_FREQ, OSC-1, 1, -1, -1, -1, -1};
93 
94 const struct dpll_params *get_dpll_ddr_params(void)
95 {
96 	return &dpll_ddr;
97 }
98 
99 #ifndef CONFIG_SPL_BUILD
100 #if defined(BOARD_DFU_BUTTON_GPIO)
101 /*
102  * This command returns the status of the user button on
103  * Input - none
104  * Returns -	1 if button is held down
105  *		0 if button is not held down
106  */
107 static int
108 do_userbutton(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
109 {
110 	int button = 0;
111 	int gpio;
112 
113 	gpio = BOARD_DFU_BUTTON_GPIO;
114 	gpio_request(gpio, "DFU");
115 	gpio_direction_input(gpio);
116 	if (gpio_get_value(gpio))
117 		button = 1;
118 	else
119 		button = 0;
120 
121 	gpio_free(gpio);
122 
123 	return button;
124 }
125 
126 U_BOOT_CMD(
127 	dfubutton, CONFIG_SYS_MAXARGS, 1, do_userbutton,
128 	"Return the status of the DFU button",
129 	""
130 );
131 #endif
132 /*
133  * This command sets led
134  * Input -	name of led
135  *		value of led
136  * Returns -	1 if input does not match
137  *		0 if led was set
138  */
139 static int
140 do_setled(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
141 {
142 	int gpio = 0;
143 	if (argc != 3)
144 		goto exit;
145 #if defined(BOARD_STATUS_LED)
146 	if (!strcmp(argv[1], "stat"))
147 		gpio = BOARD_STATUS_LED;
148 #endif
149 #if defined(BOARD_DFU_BUTTON_LED)
150 	if (!strcmp(argv[1], "dfu"))
151 		gpio = BOARD_DFU_BUTTON_LED;
152 #endif
153 	/* If argument does not mach exit */
154 	if (gpio == 0)
155 		goto exit;
156 	gpio_request(gpio, "");
157 	gpio_direction_output(gpio, 1);
158 	if (!strcmp(argv[2], "1"))
159 		gpio_set_value(gpio, 1);
160 	else
161 		gpio_set_value(gpio, 0);
162 	return 0;
163 exit:
164 	return 1;
165 }
166 
167 U_BOOT_CMD(
168 	led, CONFIG_SYS_MAXARGS, 2, do_setled,
169 	"Set led on or off",
170 	"dfu val - set dfu led\nled stat val - set status led"
171 );
172 
173 static int
174 do_usertestwdt(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
175 {
176 	printf("\n\n\n Go into infinite loop\n\n\n");
177 	while (1)
178 		;
179 	return 0;
180 };
181 
182 U_BOOT_CMD(
183 	testwdt, CONFIG_SYS_MAXARGS, 1,	do_usertestwdt,
184 	"Sends U-Boot into infinite loop",
185 	""
186 );
187 #endif /* !CONFIG_SPL_BUILD */
188