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 * See file CREDITS for list of people who contributed to this 9 * project. 10 * 11 * This program is free software; you can redistribute it and/or 12 * modify it under the terms of the GNU General Public License as 13 * published by the Free Software Foundation; either version 2 of 14 * the License, or (at your option) any later version. 15 * 16 * This program is distributed in the hope that it will be useful, 17 * but WITHOUT ANY WARRANTY; without even the implied warranty of 18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 19 * GNU General Public License for more details. 20 * 21 * You should have received a copy of the GNU General Public License 22 * along with this program; if not, write to the Free Software 23 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, 24 * MA 02110-1301 USA 25 */ 26 27 #include <common.h> 28 #include <net.h> 29 #include <malloc.h> 30 #include <netdev.h> 31 #include <miiphy.h> 32 #include <asm/arch/kirkwood.h> 33 #include <asm/arch/cpu.h> 34 #include <asm/arch/mpp.h> 35 #include <asm/arch/gpio.h> 36 #include <spi_flash.h> 37 38 #include "lsxl.h" 39 40 /* 41 * Rescue mode 42 * 43 * Selected by holding the push button for 3 seconds, while powering on 44 * the device. 45 * 46 * These linkstations don't have a (populated) serial port. There is no 47 * way to access an (unmodified) board other than using the netconsole. If 48 * you want to recover from a bad environment setting or an empty environment, 49 * you can do this only with a working network connection. Therefore, a random 50 * ethernet address is generated if none is set and a DHCP request is sent. 51 * After a successful DHCP response is received, the network settings are 52 * configured and the ncip parameter is set to the serverip. Eg. for a working 53 * resuce mode, you should set 'next-server' to the host where the netconsole 54 * client is started. 55 * Additionally, the bootsource is set to 'rescue'. 56 */ 57 58 #ifndef CONFIG_ENV_OVERWRITE 59 # error "You need to set CONFIG_ENV_OVERWRITE" 60 #endif 61 62 DECLARE_GLOBAL_DATA_PTR; 63 64 int board_early_init_f(void) 65 { 66 /* 67 * default gpio configuration 68 * There are maximum 64 gpios controlled through 2 sets of registers 69 * the below configuration configures mainly initial LED status 70 */ 71 kw_config_gpio(LSXL_OE_VAL_LOW, 72 LSXL_OE_VAL_HIGH, 73 LSXL_OE_LOW, LSXL_OE_HIGH); 74 75 /* 76 * Multi-Purpose Pins Functionality configuration 77 * These strappings are taken from the original vendor uboot port. 78 */ 79 u32 kwmpp_config[] = { 80 MPP0_SPI_SCn, 81 MPP1_SPI_MOSI, 82 MPP2_SPI_SCK, 83 MPP3_SPI_MISO, 84 MPP4_UART0_RXD, 85 MPP5_UART0_TXD, 86 MPP6_SYSRST_OUTn, 87 MPP7_GPO, 88 MPP8_GPIO, 89 MPP9_GPIO, 90 MPP10_GPO, /* HDD power */ 91 MPP11_GPIO, /* USB Vbus enable */ 92 MPP12_SD_CLK, 93 MPP13_SD_CMD, 94 MPP14_SD_D0, 95 MPP15_SD_D1, 96 MPP16_SD_D2, 97 MPP17_SD_D3, 98 MPP18_GPO, /* fan speed high */ 99 MPP19_GPO, /* fan speed low */ 100 MPP20_GE1_0, 101 MPP21_GE1_1, 102 MPP22_GE1_2, 103 MPP23_GE1_3, 104 MPP24_GE1_4, 105 MPP25_GE1_5, 106 MPP26_GE1_6, 107 MPP27_GE1_7, 108 MPP28_GPIO, 109 MPP29_GPIO, 110 MPP30_GE1_10, 111 MPP31_GE1_11, 112 MPP32_GE1_12, 113 MPP33_GE1_13, 114 MPP34_GPIO, 115 MPP35_GPIO, 116 MPP36_GPIO, /* function LED */ 117 MPP37_GPIO, /* alarm LED */ 118 MPP38_GPIO, /* info LED */ 119 MPP39_GPIO, /* power LED */ 120 MPP40_GPIO, /* fan alarm */ 121 MPP41_GPIO, /* funtion button */ 122 MPP42_GPIO, /* power switch */ 123 MPP43_GPIO, /* power auto switch */ 124 MPP44_GPIO, 125 MPP45_GPIO, 126 MPP46_GPIO, 127 MPP47_GPIO, 128 MPP48_GPIO, /* function red LED */ 129 MPP49_GPIO, 130 0 131 }; 132 133 kirkwood_mpp_conf(kwmpp_config, NULL); 134 135 return 0; 136 } 137 138 #define LED_OFF 0 139 #define LED_ALARM_ON 1 140 #define LED_ALARM_BLINKING 2 141 #define LED_POWER_ON 3 142 #define LED_POWER_BLINKING 4 143 #define LED_INFO_ON 5 144 #define LED_INFO_BLINKING 6 145 146 static void __set_led(int blink_alarm, int blink_info, int blink_power, 147 int value_alarm, int value_info, int value_power) 148 { 149 kw_gpio_set_blink(GPIO_ALARM_LED, blink_alarm); 150 kw_gpio_set_blink(GPIO_INFO_LED, blink_info); 151 kw_gpio_set_blink(GPIO_POWER_LED, blink_power); 152 kw_gpio_set_value(GPIO_ALARM_LED, value_alarm); 153 kw_gpio_set_value(GPIO_INFO_LED, value_info); 154 kw_gpio_set_value(GPIO_POWER_LED, value_power); 155 } 156 157 static void set_led(int state) 158 { 159 switch (state) { 160 case LED_OFF: 161 __set_led(0, 0, 0, 0, 0, 0); 162 break; 163 case LED_ALARM_ON: 164 __set_led(0, 0, 0, 0, 1, 1); 165 break; 166 case LED_ALARM_BLINKING: 167 __set_led(1, 0, 0, 1, 1, 1); 168 break; 169 case LED_INFO_ON: 170 __set_led(0, 0, 0, 1, 0, 1); 171 break; 172 case LED_INFO_BLINKING: 173 __set_led(0, 1, 0, 1, 1, 1); 174 break; 175 case LED_POWER_ON: 176 __set_led(0, 0, 0, 1, 1, 0); 177 break; 178 case LED_POWER_BLINKING: 179 __set_led(0, 0, 1, 1, 1, 1); 180 break; 181 } 182 } 183 184 int board_init(void) 185 { 186 /* address of boot parameters */ 187 gd->bd->bi_boot_params = kw_sdram_bar(0) + 0x100; 188 189 set_led(LED_POWER_BLINKING); 190 191 return 0; 192 } 193 194 #ifdef CONFIG_MISC_INIT_R 195 void check_enetaddr(void) 196 { 197 uchar enetaddr[6]; 198 199 if (!eth_getenv_enetaddr("ethaddr", enetaddr)) { 200 /* signal unset/invalid ethaddr to user */ 201 set_led(LED_INFO_BLINKING); 202 } 203 } 204 205 static void erase_environment(void) 206 { 207 struct spi_flash *flash; 208 209 printf("Erasing environment..\n"); 210 flash = spi_flash_probe(0, 0, 1000000, SPI_MODE_3); 211 if (!flash) { 212 printf("Erasing flash failed\n"); 213 return; 214 } 215 216 spi_flash_erase(flash, CONFIG_ENV_OFFSET, CONFIG_ENV_SIZE); 217 spi_flash_free(flash); 218 do_reset(NULL, 0, 0, NULL); 219 } 220 221 static void rescue_mode(void) 222 { 223 uchar enetaddr[6]; 224 225 printf("Entering rescue mode..\n"); 226 #ifdef CONFIG_RANDOM_MACADDR 227 if (!eth_getenv_enetaddr("ethaddr", enetaddr)) { 228 eth_random_enetaddr(enetaddr); 229 if (eth_setenv_enetaddr("ethaddr", enetaddr)) { 230 printf("Failed to set ethernet address\n"); 231 set_led(LED_ALARM_BLINKING); 232 return; 233 } 234 } 235 #endif 236 setenv("bootsource", "rescue"); 237 } 238 239 static void check_push_button(void) 240 { 241 int i = 0; 242 243 while (!kw_gpio_get_value(GPIO_FUNC_BUTTON)) { 244 udelay(100000); 245 i++; 246 247 if (i == 10) 248 set_led(LED_INFO_ON); 249 250 if (i >= 100) { 251 set_led(LED_INFO_BLINKING); 252 break; 253 } 254 } 255 256 if (i >= 100) 257 erase_environment(); 258 else if (i >= 10) 259 rescue_mode(); 260 } 261 262 int misc_init_r(void) 263 { 264 check_enetaddr(); 265 check_push_button(); 266 267 return 0; 268 } 269 #endif 270 271 #ifdef CONFIG_SHOW_BOOT_PROGRESS 272 void show_boot_progress(int progress) 273 { 274 if (progress > 0) 275 return; 276 277 /* this is not an error, eg. bootp with autoload=no will trigger this */ 278 if (progress == -BOOTSTAGE_ID_NET_LOADED) 279 return; 280 281 set_led(LED_ALARM_BLINKING); 282 } 283 #endif 284