board/buffalo/lsxl/lsxl.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright (c) 2012 Michael Walle
   4  * Michael Walle <michael@walle.cc>
   5  *
   6  * Based on sheevaplug/sheevaplug.c by
   7  *   Marvell Semiconductor <www.marvell.com>
   8  */
   9
  10 #include <common.h>
  11 #include <env.h>
  12 #include <env_internal.h>
  13 #include <flash.h>
  14 #include <net.h>
  15 #include <malloc.h>
  16 #include <netdev.h>
  17 #include <miiphy.h>
  18 #include <spi.h>
  19 #include <spi_flash.h>
  20 #include <asm/arch/soc.h>
  21 #include <asm/arch/cpu.h>
  22 #include <asm/arch/mpp.h>
  23 #include <asm/arch/gpio.h>
  24
  25 #include "lsxl.h"
  26
  27 /*
  28  * Rescue mode
  29  *
  30  * Selected by holding the push button for 3 seconds, while powering on
  31  * the device.
  32  *
  33  * These linkstations don't have a (populated) serial port. There is no
  34  * way to access an (unmodified) board other than using the netconsole. If
  35  * you want to recover from a bad environment setting or an empty environment,
  36  * you can do this only with a working network connection. Therefore, a random
  37  * ethernet address is generated if none is set and a DHCP request is sent.
  38  * After a successful DHCP response is received, the network settings are
  39  * configured and the ncip is unset. Therefore, all netconsole packets are
  40  * broadcasted.
  41  * Additionally, the bootsource is set to 'rescue'.
  42  */
  43
  44 #ifndef CONFIG_ENV_OVERWRITE
  45 # error "You need to set CONFIG_ENV_OVERWRITE"
  46 #endif
  47
  48 DECLARE_GLOBAL_DATA_PTR;
  49
  50 int board_early_init_f(void)
  51 {
  52         /*
  53          * default gpio configuration
  54          * There are maximum 64 gpios controlled through 2 sets of registers
  55          * the below configuration configures mainly initial LED status
  56          */
  57         mvebu_config_gpio(LSXL_OE_VAL_LOW,
  58                           LSXL_OE_VAL_HIGH,
  59                           LSXL_OE_LOW, LSXL_OE_HIGH);
  60
  61         /*
  62          * Multi-Purpose Pins Functionality configuration
  63          * These strappings are taken from the original vendor uboot port.
  64          */
  65         static const u32 kwmpp_config[] = {
  66                 MPP0_SPI_SCn,
  67                 MPP1_SPI_MOSI,
  68                 MPP2_SPI_SCK,
  69                 MPP3_SPI_MISO,
  70                 MPP4_UART0_RXD,
  71                 MPP5_UART0_TXD,
  72                 MPP6_SYSRST_OUTn,
  73                 MPP7_GPO,
  74                 MPP8_GPIO,
  75                 MPP9_GPIO,
  76                 MPP10_GPO,              /* HDD power */
  77                 MPP11_GPIO,             /* USB Vbus enable */
  78                 MPP12_SD_CLK,
  79                 MPP13_SD_CMD,
  80                 MPP14_SD_D0,
  81                 MPP15_SD_D1,
  82                 MPP16_SD_D2,
  83                 MPP17_SD_D3,
  84                 MPP18_GPO,              /* fan speed high */
  85                 MPP19_GPO,              /* fan speed low */
  86                 MPP20_GE1_0,
  87                 MPP21_GE1_1,
  88                 MPP22_GE1_2,
  89                 MPP23_GE1_3,
  90                 MPP24_GE1_4,
  91                 MPP25_GE1_5,
  92                 MPP26_GE1_6,
  93                 MPP27_GE1_7,
  94                 MPP28_GPIO,
  95                 MPP29_GPIO,
  96                 MPP30_GE1_10,
  97                 MPP31_GE1_11,
  98                 MPP32_GE1_12,
  99                 MPP33_GE1_13,
 100                 MPP34_GPIO,
 101                 MPP35_GPIO,
 102                 MPP36_GPIO,             /* function LED */
 103                 MPP37_GPIO,             /* alarm LED */
 104                 MPP38_GPIO,             /* info LED */
 105                 MPP39_GPIO,             /* power LED */
 106                 MPP40_GPIO,             /* fan alarm */
 107                 MPP41_GPIO,             /* funtion button */
 108                 MPP42_GPIO,             /* power switch */
 109                 MPP43_GPIO,             /* power auto switch */
 110                 MPP44_GPIO,
 111                 MPP45_GPIO,
 112                 MPP46_GPIO,
 113                 MPP47_GPIO,
 114                 MPP48_GPIO,             /* function red LED */
 115                 MPP49_GPIO,
 116                 0
 117         };
 118
 119         kirkwood_mpp_conf(kwmpp_config, NULL);
 120
 121         return 0;
 122 }
 123
 124 #define LED_OFF             0
 125 #define LED_ALARM_ON        1
 126 #define LED_ALARM_BLINKING  2
 127 #define LED_POWER_ON        3
 128 #define LED_POWER_BLINKING  4
 129 #define LED_INFO_ON         5
 130 #define LED_INFO_BLINKING   6
 131
 132 static void __set_led(int blink_alarm, int blink_info, int blink_power,
 133                 int value_alarm, int value_info, int value_power)
 134 {
 135         kw_gpio_set_blink(GPIO_ALARM_LED, blink_alarm);
 136         kw_gpio_set_blink(GPIO_INFO_LED, blink_info);
 137         kw_gpio_set_blink(GPIO_POWER_LED, blink_power);
 138         kw_gpio_set_value(GPIO_ALARM_LED, value_alarm);
 139         kw_gpio_set_value(GPIO_INFO_LED, value_info);
 140         kw_gpio_set_value(GPIO_POWER_LED, value_power);
 141 }
 142
 143 static void set_led(int state)
 144 {
 145         switch (state) {
 146         case LED_OFF:
 147                 __set_led(0, 0, 0, 1, 1, 1);
 148                 break;
 149         case LED_ALARM_ON:
 150                 __set_led(0, 0, 0, 0, 1, 1);
 151                 break;
 152         case LED_ALARM_BLINKING:
 153                 __set_led(1, 0, 0, 1, 1, 1);
 154                 break;
 155         case LED_INFO_ON:
 156                 __set_led(0, 0, 0, 1, 0, 1);
 157                 break;
 158         case LED_INFO_BLINKING:
 159                 __set_led(0, 1, 0, 1, 1, 1);
 160                 break;
 161         case LED_POWER_ON:
 162                 __set_led(0, 0, 0, 1, 1, 0);
 163                 break;
 164         case LED_POWER_BLINKING:
 165                 __set_led(0, 0, 1, 1, 1, 1);
 166                 break;
 167         }
 168 }
 169
 170 int board_init(void)
 171 {
 172         /* address of boot parameters */
 173         gd->bd->bi_boot_params = mvebu_sdram_bar(0) + 0x100;
 174
 175         set_led(LED_POWER_BLINKING);
 176
 177         return 0;
 178 }
 179
 180 #ifdef CONFIG_MISC_INIT_R
 181 static void check_power_switch(void)
 182 {
 183         if (kw_gpio_get_value(GPIO_POWER_SWITCH)) {
 184                 /* turn off fan, HDD and USB power */
 185                 kw_gpio_set_value(GPIO_HDD_POWER, 0);
 186                 kw_gpio_set_value(GPIO_USB_VBUS, 0);
 187                 kw_gpio_set_value(GPIO_FAN_HIGH, 1);
 188                 kw_gpio_set_value(GPIO_FAN_LOW, 1);
 189                 set_led(LED_OFF);
 190
 191                 /* loop until released */
 192                 while (kw_gpio_get_value(GPIO_POWER_SWITCH))
 193                         ;
 194
 195                 /* turn power on again */
 196                 kw_gpio_set_value(GPIO_HDD_POWER, 1);
 197                 kw_gpio_set_value(GPIO_USB_VBUS, 1);
 198                 kw_gpio_set_value(GPIO_FAN_HIGH, 0);
 199                 kw_gpio_set_value(GPIO_FAN_LOW, 0);
 200                 set_led(LED_POWER_BLINKING);
 201         }
 202 }
 203
 204 void check_enetaddr(void)
 205 {
 206         uchar enetaddr[6];
 207
 208         if (!eth_env_get_enetaddr("ethaddr", enetaddr)) {
 209                 /* signal unset/invalid ethaddr to user */
 210                 set_led(LED_INFO_BLINKING);
 211         }
 212 }
 213
 214 static void erase_environment(void)
 215 {
 216         struct spi_flash *flash;
 217
 218         printf("Erasing environment..\n");
 219         flash = spi_flash_probe(0, 0, 1000000, SPI_MODE_3);
 220         if (!flash) {
 221                 printf("Erasing flash failed\n");
 222                 return;
 223         }
 224
 225         spi_flash_erase(flash, CONFIG_ENV_OFFSET, CONFIG_ENV_SIZE);
 226         spi_flash_free(flash);
 227         do_reset(NULL, 0, 0, NULL);
 228 }
 229
 230 static void rescue_mode(void)
 231 {
 232         printf("Entering rescue mode..\n");
 233         env_set("bootsource", "rescue");
 234 }
 235
 236 static void check_push_button(void)
 237 {
 238         int i = 0;
 239
 240         while (!kw_gpio_get_value(GPIO_FUNC_BUTTON)) {
 241                 udelay(100000);
 242                 i++;
 243
 244                 if (i == 10)
 245                         set_led(LED_INFO_ON);
 246
 247                 if (i >= 100) {
 248                         set_led(LED_INFO_BLINKING);
 249                         break;
 250                 }
 251         }
 252
 253         if (i >= 100)
 254                 erase_environment();
 255         else if (i >= 10)
 256                 rescue_mode();
 257 }
 258
 259 int misc_init_r(void)
 260 {
 261         check_power_switch();
 262         check_enetaddr();
 263         check_push_button();
 264
 265         return 0;
 266 }
 267 #endif
 268
 269 #ifdef CONFIG_SHOW_BOOT_PROGRESS
 270 void show_boot_progress(int progress)
 271 {
 272         if (progress > 0)
 273                 return;
 274
 275         /* this is not an error, eg. bootp with autoload=no will trigger this */
 276         if (progress == -BOOTSTAGE_ID_NET_LOADED)
 277                 return;
 278
 279         set_led(LED_ALARM_BLINKING);
 280 }
 281 #endif