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