1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  * Board init file for Dragonboard 410C
4  *
5  * (C) Copyright 2015 Mateusz Kulikowski <mateusz.kulikowski@gmail.com>
6  */
7 
8 #include <common.h>
9 #include <dm.h>
10 #include <usb.h>
11 #include <asm/gpio.h>
12 #include <fdt_support.h>
13 #include <environment.h>
14 #include <asm/arch/dram.h>
15 #include <asm/arch/misc.h>
16 
17 DECLARE_GLOBAL_DATA_PTR;
18 
19 /* pointer to the device tree ammended by the firmware */
20 extern void *fw_dtb;
21 
22 void *board_fdt_blob_setup(void)
23 {
24 	if (fdt_magic(fw_dtb) != FDT_MAGIC) {
25 		printf("Firmware provided invalid dtb!\n");
26 		return NULL;
27 	}
28 
29 	return fw_dtb;
30 }
31 
32 int dram_init(void)
33 {
34 	gd->ram_size = PHYS_SDRAM_1_SIZE;
35 
36 	return 0;
37 }
38 
39 int dram_init_banksize(void)
40 {
41 	gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
42 	gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;
43 
44 	return 0;
45 }
46 
47 int board_usb_init(int index, enum usb_init_type init)
48 {
49 	static struct udevice *pmic_gpio;
50 	static struct gpio_desc hub_reset, usb_sel;
51 	int ret = 0, node;
52 
53 	if (!pmic_gpio) {
54 		ret = uclass_get_device_by_name(UCLASS_GPIO,
55 						"pm8916_gpios@c000",
56 						&pmic_gpio);
57 		if (ret < 0) {
58 			printf("Failed to find pm8916_gpios@c000 node.\n");
59 			return ret;
60 		}
61 	}
62 
63 	/* Try to request gpios needed to start usb host on dragonboard */
64 	if (!dm_gpio_is_valid(&hub_reset)) {
65 		node = fdt_subnode_offset(gd->fdt_blob,
66 					  dev_of_offset(pmic_gpio),
67 					  "usb_hub_reset_pm");
68 		if (node < 0) {
69 			printf("Failed to find usb_hub_reset_pm dt node.\n");
70 			return node;
71 		}
72 		ret = gpio_request_by_name_nodev(offset_to_ofnode(node),
73 						 "gpios", 0, &hub_reset, 0);
74 		if (ret < 0) {
75 			printf("Failed to request usb_hub_reset_pm gpio.\n");
76 			return ret;
77 		}
78 	}
79 
80 	if (!dm_gpio_is_valid(&usb_sel)) {
81 		node = fdt_subnode_offset(gd->fdt_blob,
82 					  dev_of_offset(pmic_gpio),
83 					  "usb_sw_sel_pm");
84 		if (node < 0) {
85 			printf("Failed to find usb_sw_sel_pm dt node.\n");
86 			return 0;
87 		}
88 		ret = gpio_request_by_name_nodev(offset_to_ofnode(node),
89 						 "gpios", 0, &usb_sel, 0);
90 		if (ret < 0) {
91 			printf("Failed to request usb_sw_sel_pm gpio.\n");
92 			return ret;
93 		}
94 	}
95 
96 	if (init == USB_INIT_HOST) {
97 		/* Start USB Hub */
98 		dm_gpio_set_dir_flags(&hub_reset,
99 				      GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE);
100 		mdelay(100);
101 		/* Switch usb to host connectors */
102 		dm_gpio_set_dir_flags(&usb_sel,
103 				      GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE);
104 		mdelay(100);
105 	} else { /* Device */
106 		/* Disable hub */
107 		dm_gpio_set_dir_flags(&hub_reset, GPIOD_IS_OUT);
108 		/* Switch back to device connector */
109 		dm_gpio_set_dir_flags(&usb_sel, GPIOD_IS_OUT);
110 	}
111 
112 	return 0;
113 }
114 
115 /* Check for vol- button - if pressed - stop autoboot */
116 int misc_init_r(void)
117 {
118 	struct udevice *pon;
119 	struct gpio_desc resin;
120 	int node, ret;
121 
122 	ret = uclass_get_device_by_name(UCLASS_GPIO, "pm8916_pon@800", &pon);
123 	if (ret < 0) {
124 		printf("Failed to find PMIC pon node. Check device tree\n");
125 		return 0;
126 	}
127 
128 	node = fdt_subnode_offset(gd->fdt_blob, dev_of_offset(pon),
129 				  "key_vol_down");
130 	if (node < 0) {
131 		printf("Failed to find key_vol_down node. Check device tree\n");
132 		return 0;
133 	}
134 
135 	if (gpio_request_by_name_nodev(offset_to_ofnode(node), "gpios", 0,
136 				       &resin, 0)) {
137 		printf("Failed to request key_vol_down button.\n");
138 		return 0;
139 	}
140 
141 	if (dm_gpio_get_value(&resin)) {
142 		env_set("bootdelay", "-1");
143 		env_set("bootcmd", "fastboot 0");
144 		printf("key_vol_down pressed - Starting fastboot.\n");
145 	}
146 
147 	return 0;
148 }
149 
150 int board_init(void)
151 {
152 	return 0;
153 }
154 
155 int board_late_init(void)
156 {
157 	char serial[16];
158 
159 	memset(serial, 0, 16);
160 	snprintf(serial, 13, "%x", msm_board_serial());
161 	env_set("serial#", serial);
162 	return 0;
163 }
164 
165 /* Fixup of DTB for Linux Kernel
166  * 1. Fixup installed DRAM.
167  * 2. Fixup WLAN/BT Mac address:
168  *	First, check if MAC addresses for WLAN/BT exists as environemnt
169  *	variables wlanaddr,btaddr. if not, generate a unique address.
170  */
171 
172 int ft_board_setup(void *blob, bd_t *bd)
173 {
174 	u8 mac[ARP_HLEN];
175 
176 	msm_fixup_memory(blob);
177 
178 	if (!eth_env_get_enetaddr("wlanaddr", mac)) {
179 		msm_generate_mac_addr(mac);
180 	};
181 
182 	do_fixup_by_compat(blob, "qcom,wcnss-wlan",
183 			   "local-mac-address", mac, ARP_HLEN, 1);
184 
185 
186 	if (!eth_env_get_enetaddr("btaddr", mac)) {
187 		msm_generate_mac_addr(mac);
188 
189 /* The BD address is same as WLAN MAC address but with
190  * least significant bit flipped.
191  */
192 		mac[0] ^= 0x01;
193 	};
194 
195 	do_fixup_by_compat(blob, "qcom,wcnss-bt",
196 			   "local-bd-address", mac, ARP_HLEN, 1);
197 	return 0;
198 }
199 
200 void reset_cpu(ulong addr)
201 {
202 	psci_system_reset();
203 }
204