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 <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 36 * configured and the ncip is unset. Therefore, all netconsole packets are 37 * broadcasted. 38 * 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 45 DECLARE_GLOBAL_DATA_PTR; 46 47 int 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 */ 62 static const u32 kwmpp_config[] = { 63 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 6 128 129 static 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 } 139 140 static void set_led(int state) 141 { 142 switch (state) { 143 case LED_OFF: 144 __set_led(0, 0, 0, 1, 1, 1); 145 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 } 166 167 int 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 178 static void check_power_switch(void) 179 { 180 if (kw_gpio_get_value(GPIO_POWER_SWITCH)) { 181 /* turn off fan, HDD and USB power */ 182 kw_gpio_set_value(GPIO_HDD_POWER, 0); 183 kw_gpio_set_value(GPIO_USB_VBUS, 0); 184 kw_gpio_set_value(GPIO_FAN_HIGH, 1); 185 kw_gpio_set_value(GPIO_FAN_LOW, 1); 186 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); 195 kw_gpio_set_value(GPIO_FAN_HIGH, 0); 196 kw_gpio_set_value(GPIO_FAN_LOW, 0); 197 set_led(LED_POWER_BLINKING); 198 } 199 } 200 201 void 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 } 210 211 static 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 } 226 227 static 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)) { 234 eth_random_addr(enetaddr); 235 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 } 244 245 static 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 } 267 268 int misc_init_r(void) 269 { 270 check_power_switch(); 271 check_enetaddr(); 272 check_push_button(); 273 274 return 0; 275 } 276 #endif 277 278 #ifdef CONFIG_SHOW_BOOT_PROGRESS 279 void 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 291