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Michael Wallef214a202012-06-05 11:33:17 +00001/*
2 * Copyright (c) 2012 Michael Walle
3 * Michael Walle <michael@walle.cc>
4 *
5 * Based on sheevaplug/sheevaplug.c by
6 * Marvell Semiconductor <www.marvell.com>
7 *
Wolfgang Denk1a459662013-07-08 09:37:19 +02008 * SPDX-License-Identifier: GPL-2.0+
Michael Wallef214a202012-06-05 11:33:17 +00009 */
10
11#include <common.h>
12#include <net.h>
13#include <malloc.h>
14#include <netdev.h>
15#include <miiphy.h>
16#include <asm/arch/kirkwood.h>
17#include <asm/arch/cpu.h>
18#include <asm/arch/mpp.h>
19#include <asm/arch/gpio.h>
20#include <spi_flash.h>
21
22#include "lsxl.h"
23
24/*
25 * Rescue mode
26 *
27 * Selected by holding the push button for 3 seconds, while powering on
28 * the device.
29 *
30 * These linkstations don't have a (populated) serial port. There is no
31 * way to access an (unmodified) board other than using the netconsole. If
32 * you want to recover from a bad environment setting or an empty environment,
33 * you can do this only with a working network connection. Therefore, a random
34 * ethernet address is generated if none is set and a DHCP request is sent.
35 * After a successful DHCP response is received, the network settings are
Michael Walle23c99462012-10-04 06:54:25 +000036 * configured and the ncip is unset. Therefore, all netconsole packets are
37 * broadcasted.
Michael Wallef214a202012-06-05 11:33:17 +000038 * Additionally, the bootsource is set to 'rescue'.
39 */
40
41#ifndef CONFIG_ENV_OVERWRITE
42# error "You need to set CONFIG_ENV_OVERWRITE"
43#endif
44
45DECLARE_GLOBAL_DATA_PTR;
46
47int board_early_init_f(void)
48{
49 /*
50 * default gpio configuration
51 * There are maximum 64 gpios controlled through 2 sets of registers
52 * the below configuration configures mainly initial LED status
53 */
54 kw_config_gpio(LSXL_OE_VAL_LOW,
55 LSXL_OE_VAL_HIGH,
56 LSXL_OE_LOW, LSXL_OE_HIGH);
57
58 /*
59 * Multi-Purpose Pins Functionality configuration
60 * These strappings are taken from the original vendor uboot port.
61 */
Albert ARIBAUD9d86f0c2012-11-26 11:27:36 +000062 static const u32 kwmpp_config[] = {
Michael Wallef214a202012-06-05 11:33:17 +000063 MPP0_SPI_SCn,
64 MPP1_SPI_MOSI,
65 MPP2_SPI_SCK,
66 MPP3_SPI_MISO,
67 MPP4_UART0_RXD,
68 MPP5_UART0_TXD,
69 MPP6_SYSRST_OUTn,
70 MPP7_GPO,
71 MPP8_GPIO,
72 MPP9_GPIO,
73 MPP10_GPO, /* HDD power */
74 MPP11_GPIO, /* USB Vbus enable */
75 MPP12_SD_CLK,
76 MPP13_SD_CMD,
77 MPP14_SD_D0,
78 MPP15_SD_D1,
79 MPP16_SD_D2,
80 MPP17_SD_D3,
81 MPP18_GPO, /* fan speed high */
82 MPP19_GPO, /* fan speed low */
83 MPP20_GE1_0,
84 MPP21_GE1_1,
85 MPP22_GE1_2,
86 MPP23_GE1_3,
87 MPP24_GE1_4,
88 MPP25_GE1_5,
89 MPP26_GE1_6,
90 MPP27_GE1_7,
91 MPP28_GPIO,
92 MPP29_GPIO,
93 MPP30_GE1_10,
94 MPP31_GE1_11,
95 MPP32_GE1_12,
96 MPP33_GE1_13,
97 MPP34_GPIO,
98 MPP35_GPIO,
99 MPP36_GPIO, /* function LED */
100 MPP37_GPIO, /* alarm LED */
101 MPP38_GPIO, /* info LED */
102 MPP39_GPIO, /* power LED */
103 MPP40_GPIO, /* fan alarm */
104 MPP41_GPIO, /* funtion button */
105 MPP42_GPIO, /* power switch */
106 MPP43_GPIO, /* power auto switch */
107 MPP44_GPIO,
108 MPP45_GPIO,
109 MPP46_GPIO,
110 MPP47_GPIO,
111 MPP48_GPIO, /* function red LED */
112 MPP49_GPIO,
113 0
114 };
115
116 kirkwood_mpp_conf(kwmpp_config, NULL);
117
118 return 0;
119}
120
121#define LED_OFF 0
122#define LED_ALARM_ON 1
123#define LED_ALARM_BLINKING 2
124#define LED_POWER_ON 3
125#define LED_POWER_BLINKING 4
126#define LED_INFO_ON 5
127#define LED_INFO_BLINKING 6
128
129static void __set_led(int blink_alarm, int blink_info, int blink_power,
130 int value_alarm, int value_info, int value_power)
131{
132 kw_gpio_set_blink(GPIO_ALARM_LED, blink_alarm);
133 kw_gpio_set_blink(GPIO_INFO_LED, blink_info);
134 kw_gpio_set_blink(GPIO_POWER_LED, blink_power);
135 kw_gpio_set_value(GPIO_ALARM_LED, value_alarm);
136 kw_gpio_set_value(GPIO_INFO_LED, value_info);
137 kw_gpio_set_value(GPIO_POWER_LED, value_power);
138}
139
140static void set_led(int state)
141{
142 switch (state) {
143 case LED_OFF:
Michael Wallea9f1a482012-07-30 10:47:12 +0000144 __set_led(0, 0, 0, 1, 1, 1);
Michael Wallef214a202012-06-05 11:33:17 +0000145 break;
146 case LED_ALARM_ON:
147 __set_led(0, 0, 0, 0, 1, 1);
148 break;
149 case LED_ALARM_BLINKING:
150 __set_led(1, 0, 0, 1, 1, 1);
151 break;
152 case LED_INFO_ON:
153 __set_led(0, 0, 0, 1, 0, 1);
154 break;
155 case LED_INFO_BLINKING:
156 __set_led(0, 1, 0, 1, 1, 1);
157 break;
158 case LED_POWER_ON:
159 __set_led(0, 0, 0, 1, 1, 0);
160 break;
161 case LED_POWER_BLINKING:
162 __set_led(0, 0, 1, 1, 1, 1);
163 break;
164 }
165}
166
167int board_init(void)
168{
169 /* address of boot parameters */
170 gd->bd->bi_boot_params = kw_sdram_bar(0) + 0x100;
171
172 set_led(LED_POWER_BLINKING);
173
174 return 0;
175}
176
177#ifdef CONFIG_MISC_INIT_R
Michael Wallea9f1a482012-07-30 10:47:12 +0000178static void check_power_switch(void)
179{
180 if (kw_gpio_get_value(GPIO_POWER_SWITCH)) {
Michael Walle9bd23172012-09-30 03:11:05 +0000181 /* turn off fan, HDD and USB power */
Michael Wallea9f1a482012-07-30 10:47:12 +0000182 kw_gpio_set_value(GPIO_HDD_POWER, 0);
183 kw_gpio_set_value(GPIO_USB_VBUS, 0);
Michael Walle9bd23172012-09-30 03:11:05 +0000184 kw_gpio_set_value(GPIO_FAN_HIGH, 1);
185 kw_gpio_set_value(GPIO_FAN_LOW, 1);
Michael Wallea9f1a482012-07-30 10:47:12 +0000186 set_led(LED_OFF);
187
188 /* loop until released */
189 while (kw_gpio_get_value(GPIO_POWER_SWITCH))
190 ;
191
192 /* turn power on again */
193 kw_gpio_set_value(GPIO_HDD_POWER, 1);
194 kw_gpio_set_value(GPIO_USB_VBUS, 1);
Michael Walle9bd23172012-09-30 03:11:05 +0000195 kw_gpio_set_value(GPIO_FAN_HIGH, 0);
196 kw_gpio_set_value(GPIO_FAN_LOW, 0);
Michael Wallea9f1a482012-07-30 10:47:12 +0000197 set_led(LED_POWER_BLINKING);
198 }
199}
200
Michael Wallef214a202012-06-05 11:33:17 +0000201void check_enetaddr(void)
202{
203 uchar enetaddr[6];
204
205 if (!eth_getenv_enetaddr("ethaddr", enetaddr)) {
206 /* signal unset/invalid ethaddr to user */
207 set_led(LED_INFO_BLINKING);
208 }
209}
210
211static void erase_environment(void)
212{
213 struct spi_flash *flash;
214
215 printf("Erasing environment..\n");
216 flash = spi_flash_probe(0, 0, 1000000, SPI_MODE_3);
217 if (!flash) {
218 printf("Erasing flash failed\n");
219 return;
220 }
221
222 spi_flash_erase(flash, CONFIG_ENV_OFFSET, CONFIG_ENV_SIZE);
223 spi_flash_free(flash);
224 do_reset(NULL, 0, 0, NULL);
225}
226
227static void rescue_mode(void)
228{
229 uchar enetaddr[6];
230
231 printf("Entering rescue mode..\n");
232#ifdef CONFIG_RANDOM_MACADDR
233 if (!eth_getenv_enetaddr("ethaddr", enetaddr)) {
Masahiro Yamadada384a92014-04-18 19:09:48 +0900234 eth_random_addr(enetaddr);
Michael Wallef214a202012-06-05 11:33:17 +0000235 if (eth_setenv_enetaddr("ethaddr", enetaddr)) {
236 printf("Failed to set ethernet address\n");
237 set_led(LED_ALARM_BLINKING);
238 return;
239 }
240 }
241#endif
242 setenv("bootsource", "rescue");
243}
244
245static void check_push_button(void)
246{
247 int i = 0;
248
249 while (!kw_gpio_get_value(GPIO_FUNC_BUTTON)) {
250 udelay(100000);
251 i++;
252
253 if (i == 10)
254 set_led(LED_INFO_ON);
255
256 if (i >= 100) {
257 set_led(LED_INFO_BLINKING);
258 break;
259 }
260 }
261
262 if (i >= 100)
263 erase_environment();
264 else if (i >= 10)
265 rescue_mode();
266}
267
268int misc_init_r(void)
269{
Michael Wallea9f1a482012-07-30 10:47:12 +0000270 check_power_switch();
Michael Wallef214a202012-06-05 11:33:17 +0000271 check_enetaddr();
272 check_push_button();
273
274 return 0;
275}
276#endif
277
278#ifdef CONFIG_SHOW_BOOT_PROGRESS
279void show_boot_progress(int progress)
280{
281 if (progress > 0)
282 return;
283
284 /* this is not an error, eg. bootp with autoload=no will trigger this */
285 if (progress == -BOOTSTAGE_ID_NET_LOADED)
286 return;
287
288 set_led(LED_ALARM_BLINKING);
289}
290#endif