board/buffalo/lsxl/lsxl.c

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