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
board_fdt_blob_setup(void)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
dram_init(void)32 int dram_init(void)
33 {
34 gd->ram_size = PHYS_SDRAM_1_SIZE;
35
36 return 0;
37 }
38
dram_init_banksize(void)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
board_usb_init(int index,enum usb_init_type init)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 */
misc_init_r(void)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
board_init(void)150 int board_init(void)
151 {
152 return 0;
153 }
154
board_late_init(void)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
ft_board_setup(void * blob,bd_t * bd)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
reset_cpu(ulong addr)200 void reset_cpu(ulong addr)
201 {
202 psci_system_reset();
203 }
204