1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Copyright (C) 2016, STMicroelectronics - All Rights Reserved
4 * Author(s): Vikas Manocha, <vikas.manocha@st.com> for STMicroelectronics.
5 */
6
7 #include <common.h>
8 #include <dm.h>
9 #include <init.h>
10 #include <log.h>
11 #include <miiphy.h>
12 #include <phy_interface.h>
13 #include <ram.h>
14 #include <serial.h>
15 #include <spl.h>
16 #include <splash.h>
17 #include <st_logo_data.h>
18 #include <video.h>
19 #include <asm/global_data.h>
20 #include <asm/io.h>
21 #include <asm/armv7m.h>
22 #include <asm/arch/stm32.h>
23 #include <asm/arch/syscfg.h>
24 #include <asm/gpio.h>
25 #include <linux/delay.h>
26
27 DECLARE_GLOBAL_DATA_PTR;
28
dram_init(void)29 int dram_init(void)
30 {
31 #ifndef CONFIG_SPL_BUILD
32 int rv;
33 struct udevice *dev;
34 rv = uclass_get_device(UCLASS_RAM, 0, &dev);
35 if (rv) {
36 debug("DRAM init failed: %d\n", rv);
37 return rv;
38 }
39
40 #endif
41 return fdtdec_setup_mem_size_base();
42 }
43
dram_init_banksize(void)44 int dram_init_banksize(void)
45 {
46 return fdtdec_setup_memory_banksize();
47 }
48
49 #ifdef CONFIG_SPL_BUILD
50 #ifdef CONFIG_SPL_OS_BOOT
spl_start_uboot(void)51 int spl_start_uboot(void)
52 {
53 debug("SPL: booting kernel\n");
54 /* break into full u-boot on 'c' */
55 return serial_tstc() && serial_getc() == 'c';
56 }
57 #endif
58
spl_dram_init(void)59 int spl_dram_init(void)
60 {
61 struct udevice *dev;
62 int rv;
63 rv = uclass_get_device(UCLASS_RAM, 0, &dev);
64 if (rv)
65 debug("DRAM init failed: %d\n", rv);
66 return rv;
67 }
spl_board_init(void)68 void spl_board_init(void)
69 {
70 preloader_console_init();
71 spl_dram_init();
72 arch_cpu_init(); /* to configure mpu for sdram rw permissions */
73 }
spl_boot_device(void)74 u32 spl_boot_device(void)
75 {
76 return BOOT_DEVICE_XIP;
77 }
78 #endif
79
board_late_init(void)80 int board_late_init(void)
81 {
82 struct gpio_desc gpio = {};
83 int node;
84
85 node = fdt_node_offset_by_compatible(gd->fdt_blob, 0, "st,led1");
86 if (node < 0)
87 return -1;
88
89 gpio_request_by_name_nodev(offset_to_ofnode(node), "led-gpio", 0, &gpio,
90 GPIOD_IS_OUT);
91
92 if (dm_gpio_is_valid(&gpio)) {
93 dm_gpio_set_value(&gpio, 0);
94 mdelay(10);
95 dm_gpio_set_value(&gpio, 1);
96 }
97
98 /* read button 1*/
99 node = fdt_node_offset_by_compatible(gd->fdt_blob, 0, "st,button1");
100 if (node < 0)
101 return -1;
102
103 gpio_request_by_name_nodev(offset_to_ofnode(node), "button-gpio", 0,
104 &gpio, GPIOD_IS_IN);
105
106 if (dm_gpio_is_valid(&gpio)) {
107 if (dm_gpio_get_value(&gpio))
108 puts("usr button is at HIGH LEVEL\n");
109 else
110 puts("usr button is at LOW LEVEL\n");
111 }
112
113 return 0;
114 }
115
board_init(void)116 int board_init(void)
117 {
118 #ifdef CONFIG_ETH_DESIGNWARE
119 ofnode node;
120
121 node = ofnode_by_compatible(ofnode_null(), "st,stm32-dwmac");
122 if (!ofnode_valid(node))
123 return -1;
124
125 switch (ofnode_read_phy_mode(node)) {
126 case PHY_INTERFACE_MODE_RMII:
127 STM32_SYSCFG->pmc |= SYSCFG_PMC_MII_RMII_SEL;
128 break;
129 case PHY_INTERFACE_MODE_MII:
130 STM32_SYSCFG->pmc &= ~SYSCFG_PMC_MII_RMII_SEL;
131 break;
132 default:
133 printf("Unsupported PHY interface!\n");
134 }
135 #endif
136
137 #if defined(CONFIG_CMD_BMP)
138 bmp_display((ulong)stmicroelectronics_uboot_logo_8bit_rle,
139 BMP_ALIGN_CENTER, BMP_ALIGN_CENTER);
140 #endif /* CONFIG_CMD_BMP */
141
142 return 0;
143 }
144