1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Copyright (c) 2012 Michael Walle
4 * Michael Walle <michael@walle.cc>
5 *
6 * Based on sheevaplug/sheevaplug.c by
7 * Marvell Semiconductor <www.marvell.com>
8 */
9
10 #include <common.h>
11 #include <bootstage.h>
12 #include <button.h>
13 #include <command.h>
14 #include <env.h>
15 #include <init.h>
16 #include <led.h>
17 #include <power/regulator.h>
18 #include <spi.h>
19 #include <spi_flash.h>
20 #include <asm/arch/cpu.h>
21 #include <asm/arch/mpp.h>
22 #include <asm/global_data.h>
23 #include <asm/io.h>
24 #include <linux/delay.h>
25
26 #include "lsxl.h"
27
28 /*
29 * Rescue mode
30 *
31 * Selected by holding the push button for 3 seconds, while powering on
32 * the device.
33 *
34 * These linkstations don't have a (populated) serial port. There is no
35 * way to access an (unmodified) board other than using the netconsole. If
36 * you want to recover from a bad environment setting or an empty environment,
37 * you can do this only with a working network connection. Therefore, a random
38 * ethernet address is generated if none is set and a DHCP request is sent.
39 * After a successful DHCP response is received, the network settings are
40 * configured and the ncip is unset. Therefore, all netconsole packets are
41 * broadcasted.
42 * Additionally, the bootsource is set to 'rescue'.
43 */
44
45 DECLARE_GLOBAL_DATA_PTR;
46
47 static bool force_rescue_mode;
48
board_early_init_f(void)49 int board_early_init_f(void)
50 {
51 /*
52 * default gpio configuration
53 * There are maximum 64 gpios controlled through 2 sets of registers
54 * the below configuration configures mainly initial LED status
55 */
56 mvebu_config_gpio(LSXL_OE_VAL_LOW,
57 LSXL_OE_VAL_HIGH,
58 LSXL_OE_LOW, LSXL_OE_HIGH);
59
60 /*
61 * Multi-Purpose Pins Functionality configuration
62 * These strappings are taken from the original vendor uboot port.
63 */
64 static const u32 kwmpp_config[] = {
65 MPP0_SPI_SCn,
66 MPP1_SPI_MOSI,
67 MPP2_SPI_SCK,
68 MPP3_SPI_MISO,
69 MPP4_UART0_RXD,
70 MPP5_UART0_TXD,
71 MPP6_SYSRST_OUTn,
72 MPP7_GPO,
73 MPP8_GPIO,
74 MPP9_GPIO,
75 MPP10_GPO, /* HDD power */
76 MPP11_GPIO, /* USB Vbus enable */
77 MPP12_SD_CLK,
78 MPP13_SD_CMD,
79 MPP14_SD_D0,
80 MPP15_SD_D1,
81 MPP16_SD_D2,
82 MPP17_SD_D3,
83 MPP18_GPO, /* fan speed high */
84 MPP19_GPO, /* fan speed low */
85 MPP20_GE1_0,
86 MPP21_GE1_1,
87 MPP22_GE1_2,
88 MPP23_GE1_3,
89 MPP24_GE1_4,
90 MPP25_GE1_5,
91 MPP26_GE1_6,
92 MPP27_GE1_7,
93 MPP28_GPIO,
94 MPP29_GPIO,
95 MPP30_GE1_10,
96 MPP31_GE1_11,
97 MPP32_GE1_12,
98 MPP33_GE1_13,
99 MPP34_GPIO,
100 MPP35_GPIO,
101 MPP36_GPIO, /* function LED */
102 MPP37_GPIO, /* alarm LED */
103 MPP38_GPIO, /* info LED */
104 MPP39_GPIO, /* power LED */
105 MPP40_GPIO, /* fan alarm */
106 MPP41_GPIO, /* funtion button */
107 MPP42_GPIO, /* power switch */
108 MPP43_GPIO, /* power auto switch */
109 MPP44_GPIO,
110 MPP45_GPIO,
111 MPP46_GPIO,
112 MPP47_GPIO,
113 MPP48_GPIO, /* function red LED */
114 MPP49_GPIO,
115 0
116 };
117
118 kirkwood_mpp_conf(kwmpp_config, NULL);
119
120 return 0;
121 }
122
123 enum {
124 LSXL_LED_OFF,
125 LSXL_LED_ALARM,
126 LSXL_LED_POWER,
127 LSXL_LED_INFO,
128 };
129
__set_led(int alarm,int info,int power)130 static void __set_led(int alarm, int info, int power)
131 {
132 struct udevice *led;
133 int ret;
134
135 ret = led_get_by_label("lsxl:red:alarm", &led);
136 if (!ret)
137 led_set_state(led, alarm);
138 ret = led_get_by_label("lsxl:amber:info", &led);
139 if (!ret)
140 led_set_state(led, info);
141 ret = led_get_by_label("lsxl:blue:power", &led);
142 if (!ret)
143 led_set_state(led, power);
144 }
145
set_led(int state)146 static void set_led(int state)
147 {
148 switch (state) {
149 case LSXL_LED_OFF:
150 __set_led(0, 0, 0);
151 break;
152 case LSXL_LED_ALARM:
153 __set_led(1, 0, 0);
154 break;
155 case LSXL_LED_INFO:
156 __set_led(0, 1, 0);
157 break;
158 case LSXL_LED_POWER:
159 __set_led(0, 0, 1);
160 break;
161 }
162 }
163
board_init(void)164 int board_init(void)
165 {
166 /* address of boot parameters */
167 gd->bd->bi_boot_params = mvebu_sdram_bar(0) + 0x100;
168
169 set_led(LSXL_LED_POWER);
170
171 return 0;
172 }
173
check_power_switch(void)174 static void check_power_switch(void)
175 {
176 struct udevice *power_button, *hdd_power, *usb_power;
177 int ret;
178
179 ret = button_get_by_label("Power-on Switch", &power_button);
180 if (ret)
181 goto err;
182
183 ret = regulator_get_by_platname("HDD Power", &hdd_power);
184 if (ret)
185 goto err;
186
187 ret = regulator_get_by_platname("USB Power", &usb_power);
188 if (ret)
189 goto err;
190
191 if (button_get_state(power_button) == BUTTON_OFF) {
192 ret = regulator_set_enable(hdd_power, false);
193 if (ret)
194 goto err;
195 ret = regulator_set_enable(usb_power, false);
196 if (ret)
197 goto err;
198 /* TODO: fan off */
199 set_led(LSXL_LED_OFF);
200
201 /* loop until released */
202 while (button_get_state(power_button) == BUTTON_OFF)
203 ;
204
205 /* turn power on again */
206 ret = regulator_set_enable(hdd_power, true);
207 if (ret)
208 goto err;
209 ret = regulator_set_enable(usb_power, true);
210 if (ret)
211 goto err;
212 /* TODO: fan on */
213 set_led(LSXL_LED_POWER);
214 };
215
216 return;
217 err:
218 printf("error in %s\n", __func__);
219 }
220
check_enetaddr(void)221 void check_enetaddr(void)
222 {
223 uchar enetaddr[6];
224
225 if (!eth_env_get_enetaddr("ethaddr", enetaddr)) {
226 /* signal unset/invalid ethaddr to user */
227 set_led(LSXL_LED_INFO);
228 }
229 }
230
erase_environment(void)231 static void erase_environment(void)
232 {
233 struct spi_flash *flash;
234
235 printf("Erasing environment..\n");
236 flash = spi_flash_probe(0, 0, 1000000, SPI_MODE_3);
237 if (!flash) {
238 printf("Erasing flash failed\n");
239 return;
240 }
241
242 spi_flash_erase(flash, CONFIG_ENV_OFFSET, CONFIG_ENV_SIZE);
243 spi_flash_free(flash);
244 do_reset(NULL, 0, 0, NULL);
245 }
246
rescue_mode(void)247 static void rescue_mode(void)
248 {
249 printf("Entering rescue mode..\n");
250 env_set("bootsource", "rescue");
251 }
252
check_push_button(void)253 static void check_push_button(void)
254 {
255 struct udevice *func_button;
256 int i = 0;
257
258 int ret;
259
260 ret = button_get_by_label("Function Button", &func_button);
261 if (ret)
262 goto err;
263
264 while (button_get_state(func_button) == BUTTON_ON) {
265 udelay(100000);
266 i++;
267
268 if (i == 10)
269 set_led(LSXL_LED_INFO);
270
271 if (i >= 100) {
272 set_led(LSXL_LED_ALARM);
273 break;
274 }
275 }
276
277 if (i >= 100)
278 erase_environment();
279 else if (i >= 10)
280 force_rescue_mode = true;
281
282 return;
283 err:
284 printf("error in %s\n", __func__);
285 }
286
board_early_init_r(void)287 int board_early_init_r(void)
288 {
289 check_push_button();
290
291 return 0;
292 }
293
misc_init_r(void)294 int misc_init_r(void)
295 {
296 check_power_switch();
297 check_enetaddr();
298 if (force_rescue_mode)
299 rescue_mode();
300
301 return 0;
302 }
303
304 #if CONFIG_IS_ENABLED(BOOTSTAGE)
show_boot_progress(int progress)305 void show_boot_progress(int progress)
306 {
307 if (progress > 0)
308 return;
309
310 /* this is not an error, eg. bootp with autoload=no will trigger this */
311 if (progress == -BOOTSTAGE_ID_NET_LOADED)
312 return;
313
314 set_led(LSXL_LED_ALARM);
315 }
316 #endif
317