1 /* 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 * 8 * SPDX-License-Identifier: GPL-2.0+ 9 */ 10 11 #include <common.h> 12 #include <environment.h> 13 #include <net.h> 14 #include <malloc.h> 15 #include <netdev.h> 16 #include <miiphy.h> 17 #include <spi.h> 18 #include <spi_flash.h> 19 #include <asm/arch/soc.h> 20 #include <asm/arch/cpu.h> 21 #include <asm/arch/mpp.h> 22 #include <asm/arch/gpio.h> 23 24 #include "lsxl.h" 25 26 /* 27 * Rescue mode 28 * 29 * Selected by holding the push button for 3 seconds, while powering on 30 * the device. 31 * 32 * These linkstations don't have a (populated) serial port. There is no 33 * way to access an (unmodified) board other than using the netconsole. If 34 * you want to recover from a bad environment setting or an empty environment, 35 * you can do this only with a working network connection. Therefore, a random 36 * ethernet address is generated if none is set and a DHCP request is sent. 37 * After a successful DHCP response is received, the network settings are 38 * configured and the ncip is unset. Therefore, all netconsole packets are 39 * broadcasted. 40 * Additionally, the bootsource is set to 'rescue'. 41 */ 42 43 #ifndef CONFIG_ENV_OVERWRITE 44 # error "You need to set CONFIG_ENV_OVERWRITE" 45 #endif 46 47 DECLARE_GLOBAL_DATA_PTR; 48 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 #define LED_OFF 0 124 #define LED_ALARM_ON 1 125 #define LED_ALARM_BLINKING 2 126 #define LED_POWER_ON 3 127 #define LED_POWER_BLINKING 4 128 #define LED_INFO_ON 5 129 #define LED_INFO_BLINKING 6 130 131 static void __set_led(int blink_alarm, int blink_info, int blink_power, 132 int value_alarm, int value_info, int value_power) 133 { 134 kw_gpio_set_blink(GPIO_ALARM_LED, blink_alarm); 135 kw_gpio_set_blink(GPIO_INFO_LED, blink_info); 136 kw_gpio_set_blink(GPIO_POWER_LED, blink_power); 137 kw_gpio_set_value(GPIO_ALARM_LED, value_alarm); 138 kw_gpio_set_value(GPIO_INFO_LED, value_info); 139 kw_gpio_set_value(GPIO_POWER_LED, value_power); 140 } 141 142 static void set_led(int state) 143 { 144 switch (state) { 145 case LED_OFF: 146 __set_led(0, 0, 0, 1, 1, 1); 147 break; 148 case LED_ALARM_ON: 149 __set_led(0, 0, 0, 0, 1, 1); 150 break; 151 case LED_ALARM_BLINKING: 152 __set_led(1, 0, 0, 1, 1, 1); 153 break; 154 case LED_INFO_ON: 155 __set_led(0, 0, 0, 1, 0, 1); 156 break; 157 case LED_INFO_BLINKING: 158 __set_led(0, 1, 0, 1, 1, 1); 159 break; 160 case LED_POWER_ON: 161 __set_led(0, 0, 0, 1, 1, 0); 162 break; 163 case LED_POWER_BLINKING: 164 __set_led(0, 0, 1, 1, 1, 1); 165 break; 166 } 167 } 168 169 int board_init(void) 170 { 171 /* address of boot parameters */ 172 gd->bd->bi_boot_params = mvebu_sdram_bar(0) + 0x100; 173 174 set_led(LED_POWER_BLINKING); 175 176 return 0; 177 } 178 179 #ifdef CONFIG_MISC_INIT_R 180 static void check_power_switch(void) 181 { 182 if (kw_gpio_get_value(GPIO_POWER_SWITCH)) { 183 /* turn off fan, HDD and USB power */ 184 kw_gpio_set_value(GPIO_HDD_POWER, 0); 185 kw_gpio_set_value(GPIO_USB_VBUS, 0); 186 kw_gpio_set_value(GPIO_FAN_HIGH, 1); 187 kw_gpio_set_value(GPIO_FAN_LOW, 1); 188 set_led(LED_OFF); 189 190 /* loop until released */ 191 while (kw_gpio_get_value(GPIO_POWER_SWITCH)) 192 ; 193 194 /* turn power on again */ 195 kw_gpio_set_value(GPIO_HDD_POWER, 1); 196 kw_gpio_set_value(GPIO_USB_VBUS, 1); 197 kw_gpio_set_value(GPIO_FAN_HIGH, 0); 198 kw_gpio_set_value(GPIO_FAN_LOW, 0); 199 set_led(LED_POWER_BLINKING); 200 } 201 } 202 203 void check_enetaddr(void) 204 { 205 uchar enetaddr[6]; 206 207 if (!eth_env_get_enetaddr("ethaddr", enetaddr)) { 208 /* signal unset/invalid ethaddr to user */ 209 set_led(LED_INFO_BLINKING); 210 } 211 } 212 213 static void erase_environment(void) 214 { 215 struct spi_flash *flash; 216 217 printf("Erasing environment..\n"); 218 flash = spi_flash_probe(0, 0, 1000000, SPI_MODE_3); 219 if (!flash) { 220 printf("Erasing flash failed\n"); 221 return; 222 } 223 224 spi_flash_erase(flash, CONFIG_ENV_OFFSET, CONFIG_ENV_SIZE); 225 spi_flash_free(flash); 226 do_reset(NULL, 0, 0, NULL); 227 } 228 229 static void rescue_mode(void) 230 { 231 printf("Entering rescue mode..\n"); 232 env_set("bootsource", "rescue"); 233 } 234 235 static void check_push_button(void) 236 { 237 int i = 0; 238 239 while (!kw_gpio_get_value(GPIO_FUNC_BUTTON)) { 240 udelay(100000); 241 i++; 242 243 if (i == 10) 244 set_led(LED_INFO_ON); 245 246 if (i >= 100) { 247 set_led(LED_INFO_BLINKING); 248 break; 249 } 250 } 251 252 if (i >= 100) 253 erase_environment(); 254 else if (i >= 10) 255 rescue_mode(); 256 } 257 258 int misc_init_r(void) 259 { 260 check_power_switch(); 261 check_enetaddr(); 262 check_push_button(); 263 264 return 0; 265 } 266 #endif 267 268 #ifdef CONFIG_SHOW_BOOT_PROGRESS 269 void show_boot_progress(int progress) 270 { 271 if (progress > 0) 272 return; 273 274 /* this is not an error, eg. bootp with autoload=no will trigger this */ 275 if (progress == -BOOTSTAGE_ID_NET_LOADED) 276 return; 277 278 set_led(LED_ALARM_BLINKING); 279 } 280 #endif 281