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 <environment.h>
12 #include <net.h>
13 #include <malloc.h>
14 #include <netdev.h>
15 #include <miiphy.h>
16 #include <spi.h>
17 #include <spi_flash.h>
18 #include <asm/arch/soc.h>
19 #include <asm/arch/cpu.h>
20 #include <asm/arch/mpp.h>
21 #include <asm/arch/gpio.h>
22
23 #include "lsxl.h"
24
25 /*
26 * Rescue mode
27 *
28 * Selected by holding the push button for 3 seconds, while powering on
29 * the device.
30 *
31 * These linkstations don't have a (populated) serial port. There is no
32 * way to access an (unmodified) board other than using the netconsole. If
33 * you want to recover from a bad environment setting or an empty environment,
34 * you can do this only with a working network connection. Therefore, a random
35 * ethernet address is generated if none is set and a DHCP request is sent.
36 * After a successful DHCP response is received, the network settings are
37 * configured and the ncip is unset. Therefore, all netconsole packets are
38 * broadcasted.
39 * Additionally, the bootsource is set to 'rescue'.
40 */
41
42 #ifndef CONFIG_ENV_OVERWRITE
43 # error "You need to set CONFIG_ENV_OVERWRITE"
44 #endif
45
46 DECLARE_GLOBAL_DATA_PTR;
47
board_early_init_f(void)48 int board_early_init_f(void)
49 {
50 /*
51 * default gpio configuration
52 * There are maximum 64 gpios controlled through 2 sets of registers
53 * the below configuration configures mainly initial LED status
54 */
55 mvebu_config_gpio(LSXL_OE_VAL_LOW,
56 LSXL_OE_VAL_HIGH,
57 LSXL_OE_LOW, LSXL_OE_HIGH);
58
59 /*
60 * Multi-Purpose Pins Functionality configuration
61 * These strappings are taken from the original vendor uboot port.
62 */
63 static const u32 kwmpp_config[] = {
64 MPP0_SPI_SCn,
65 MPP1_SPI_MOSI,
66 MPP2_SPI_SCK,
67 MPP3_SPI_MISO,
68 MPP4_UART0_RXD,
69 MPP5_UART0_TXD,
70 MPP6_SYSRST_OUTn,
71 MPP7_GPO,
72 MPP8_GPIO,
73 MPP9_GPIO,
74 MPP10_GPO, /* HDD power */
75 MPP11_GPIO, /* USB Vbus enable */
76 MPP12_SD_CLK,
77 MPP13_SD_CMD,
78 MPP14_SD_D0,
79 MPP15_SD_D1,
80 MPP16_SD_D2,
81 MPP17_SD_D3,
82 MPP18_GPO, /* fan speed high */
83 MPP19_GPO, /* fan speed low */
84 MPP20_GE1_0,
85 MPP21_GE1_1,
86 MPP22_GE1_2,
87 MPP23_GE1_3,
88 MPP24_GE1_4,
89 MPP25_GE1_5,
90 MPP26_GE1_6,
91 MPP27_GE1_7,
92 MPP28_GPIO,
93 MPP29_GPIO,
94 MPP30_GE1_10,
95 MPP31_GE1_11,
96 MPP32_GE1_12,
97 MPP33_GE1_13,
98 MPP34_GPIO,
99 MPP35_GPIO,
100 MPP36_GPIO, /* function LED */
101 MPP37_GPIO, /* alarm LED */
102 MPP38_GPIO, /* info LED */
103 MPP39_GPIO, /* power LED */
104 MPP40_GPIO, /* fan alarm */
105 MPP41_GPIO, /* funtion button */
106 MPP42_GPIO, /* power switch */
107 MPP43_GPIO, /* power auto switch */
108 MPP44_GPIO,
109 MPP45_GPIO,
110 MPP46_GPIO,
111 MPP47_GPIO,
112 MPP48_GPIO, /* function red LED */
113 MPP49_GPIO,
114 0
115 };
116
117 kirkwood_mpp_conf(kwmpp_config, NULL);
118
119 return 0;
120 }
121
122 #define LED_OFF 0
123 #define LED_ALARM_ON 1
124 #define LED_ALARM_BLINKING 2
125 #define LED_POWER_ON 3
126 #define LED_POWER_BLINKING 4
127 #define LED_INFO_ON 5
128 #define LED_INFO_BLINKING 6
129
__set_led(int blink_alarm,int blink_info,int blink_power,int value_alarm,int value_info,int value_power)130 static void __set_led(int blink_alarm, int blink_info, int blink_power,
131 int value_alarm, int value_info, int value_power)
132 {
133 kw_gpio_set_blink(GPIO_ALARM_LED, blink_alarm);
134 kw_gpio_set_blink(GPIO_INFO_LED, blink_info);
135 kw_gpio_set_blink(GPIO_POWER_LED, blink_power);
136 kw_gpio_set_value(GPIO_ALARM_LED, value_alarm);
137 kw_gpio_set_value(GPIO_INFO_LED, value_info);
138 kw_gpio_set_value(GPIO_POWER_LED, value_power);
139 }
140
set_led(int state)141 static void set_led(int state)
142 {
143 switch (state) {
144 case LED_OFF:
145 __set_led(0, 0, 0, 1, 1, 1);
146 break;
147 case LED_ALARM_ON:
148 __set_led(0, 0, 0, 0, 1, 1);
149 break;
150 case LED_ALARM_BLINKING:
151 __set_led(1, 0, 0, 1, 1, 1);
152 break;
153 case LED_INFO_ON:
154 __set_led(0, 0, 0, 1, 0, 1);
155 break;
156 case LED_INFO_BLINKING:
157 __set_led(0, 1, 0, 1, 1, 1);
158 break;
159 case LED_POWER_ON:
160 __set_led(0, 0, 0, 1, 1, 0);
161 break;
162 case LED_POWER_BLINKING:
163 __set_led(0, 0, 1, 1, 1, 1);
164 break;
165 }
166 }
167
board_init(void)168 int board_init(void)
169 {
170 /* address of boot parameters */
171 gd->bd->bi_boot_params = mvebu_sdram_bar(0) + 0x100;
172
173 set_led(LED_POWER_BLINKING);
174
175 return 0;
176 }
177
178 #ifdef CONFIG_MISC_INIT_R
check_power_switch(void)179 static void check_power_switch(void)
180 {
181 if (kw_gpio_get_value(GPIO_POWER_SWITCH)) {
182 /* turn off fan, HDD and USB power */
183 kw_gpio_set_value(GPIO_HDD_POWER, 0);
184 kw_gpio_set_value(GPIO_USB_VBUS, 0);
185 kw_gpio_set_value(GPIO_FAN_HIGH, 1);
186 kw_gpio_set_value(GPIO_FAN_LOW, 1);
187 set_led(LED_OFF);
188
189 /* loop until released */
190 while (kw_gpio_get_value(GPIO_POWER_SWITCH))
191 ;
192
193 /* turn power on again */
194 kw_gpio_set_value(GPIO_HDD_POWER, 1);
195 kw_gpio_set_value(GPIO_USB_VBUS, 1);
196 kw_gpio_set_value(GPIO_FAN_HIGH, 0);
197 kw_gpio_set_value(GPIO_FAN_LOW, 0);
198 set_led(LED_POWER_BLINKING);
199 }
200 }
201
check_enetaddr(void)202 void check_enetaddr(void)
203 {
204 uchar enetaddr[6];
205
206 if (!eth_env_get_enetaddr("ethaddr", enetaddr)) {
207 /* signal unset/invalid ethaddr to user */
208 set_led(LED_INFO_BLINKING);
209 }
210 }
211
erase_environment(void)212 static void erase_environment(void)
213 {
214 struct spi_flash *flash;
215
216 printf("Erasing environment..\n");
217 flash = spi_flash_probe(0, 0, 1000000, SPI_MODE_3);
218 if (!flash) {
219 printf("Erasing flash failed\n");
220 return;
221 }
222
223 spi_flash_erase(flash, CONFIG_ENV_OFFSET, CONFIG_ENV_SIZE);
224 spi_flash_free(flash);
225 do_reset(NULL, 0, 0, NULL);
226 }
227
rescue_mode(void)228 static void rescue_mode(void)
229 {
230 printf("Entering rescue mode..\n");
231 env_set("bootsource", "rescue");
232 }
233
check_push_button(void)234 static void check_push_button(void)
235 {
236 int i = 0;
237
238 while (!kw_gpio_get_value(GPIO_FUNC_BUTTON)) {
239 udelay(100000);
240 i++;
241
242 if (i == 10)
243 set_led(LED_INFO_ON);
244
245 if (i >= 100) {
246 set_led(LED_INFO_BLINKING);
247 break;
248 }
249 }
250
251 if (i >= 100)
252 erase_environment();
253 else if (i >= 10)
254 rescue_mode();
255 }
256
misc_init_r(void)257 int misc_init_r(void)
258 {
259 check_power_switch();
260 check_enetaddr();
261 check_push_button();
262
263 return 0;
264 }
265 #endif
266
267 #ifdef CONFIG_SHOW_BOOT_PROGRESS
show_boot_progress(int progress)268 void show_boot_progress(int progress)
269 {
270 if (progress > 0)
271 return;
272
273 /* this is not an error, eg. bootp with autoload=no will trigger this */
274 if (progress == -BOOTSTAGE_ID_NET_LOADED)
275 return;
276
277 set_led(LED_ALARM_BLINKING);
278 }
279 #endif
280