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https://github.com/brain-hackers/u-boot-brain
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![Michael Walle](/assets/img/avatar_default.png)
This patch restores the Linkstation's original behaviour when powering off. Once the (soft) power switch is turned off, linux will reboot and the bootloader turns off HDD and USB power. Then it loops as long as the switch is in the off position, before continuing the boot process again. Additionally, this patch fixes the board function set_led(LED_OFF). Signed-off-by: Michael Walle <michael@walle.cc> Cc: Prafulla Wadaskar <prafulla@marvell.com>
304 lines
6.8 KiB
C
304 lines
6.8 KiB
C
/*
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* Copyright (c) 2012 Michael Walle
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* Michael Walle <michael@walle.cc>
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*
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* Based on sheevaplug/sheevaplug.c by
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* Marvell Semiconductor <www.marvell.com>
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301 USA
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*/
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#include <common.h>
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#include <net.h>
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#include <malloc.h>
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#include <netdev.h>
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#include <miiphy.h>
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#include <asm/arch/kirkwood.h>
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#include <asm/arch/cpu.h>
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#include <asm/arch/mpp.h>
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#include <asm/arch/gpio.h>
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#include <spi_flash.h>
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#include "lsxl.h"
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/*
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* Rescue mode
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*
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* Selected by holding the push button for 3 seconds, while powering on
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* the device.
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*
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* These linkstations don't have a (populated) serial port. There is no
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* way to access an (unmodified) board other than using the netconsole. If
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* you want to recover from a bad environment setting or an empty environment,
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* you can do this only with a working network connection. Therefore, a random
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* ethernet address is generated if none is set and a DHCP request is sent.
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* After a successful DHCP response is received, the network settings are
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* configured and the ncip parameter is set to the serverip. Eg. for a working
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* resuce mode, you should set 'next-server' to the host where the netconsole
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* client is started.
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* Additionally, the bootsource is set to 'rescue'.
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*/
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#ifndef CONFIG_ENV_OVERWRITE
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# error "You need to set CONFIG_ENV_OVERWRITE"
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#endif
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DECLARE_GLOBAL_DATA_PTR;
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int board_early_init_f(void)
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{
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/*
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* default gpio configuration
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* There are maximum 64 gpios controlled through 2 sets of registers
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* the below configuration configures mainly initial LED status
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*/
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kw_config_gpio(LSXL_OE_VAL_LOW,
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LSXL_OE_VAL_HIGH,
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LSXL_OE_LOW, LSXL_OE_HIGH);
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/*
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* Multi-Purpose Pins Functionality configuration
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* These strappings are taken from the original vendor uboot port.
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*/
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u32 kwmpp_config[] = {
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MPP0_SPI_SCn,
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MPP1_SPI_MOSI,
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MPP2_SPI_SCK,
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MPP3_SPI_MISO,
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MPP4_UART0_RXD,
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MPP5_UART0_TXD,
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MPP6_SYSRST_OUTn,
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MPP7_GPO,
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MPP8_GPIO,
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MPP9_GPIO,
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MPP10_GPO, /* HDD power */
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MPP11_GPIO, /* USB Vbus enable */
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MPP12_SD_CLK,
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MPP13_SD_CMD,
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MPP14_SD_D0,
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MPP15_SD_D1,
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MPP16_SD_D2,
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MPP17_SD_D3,
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MPP18_GPO, /* fan speed high */
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MPP19_GPO, /* fan speed low */
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MPP20_GE1_0,
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MPP21_GE1_1,
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MPP22_GE1_2,
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MPP23_GE1_3,
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MPP24_GE1_4,
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MPP25_GE1_5,
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MPP26_GE1_6,
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MPP27_GE1_7,
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MPP28_GPIO,
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MPP29_GPIO,
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MPP30_GE1_10,
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MPP31_GE1_11,
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MPP32_GE1_12,
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MPP33_GE1_13,
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MPP34_GPIO,
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MPP35_GPIO,
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MPP36_GPIO, /* function LED */
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MPP37_GPIO, /* alarm LED */
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MPP38_GPIO, /* info LED */
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MPP39_GPIO, /* power LED */
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MPP40_GPIO, /* fan alarm */
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MPP41_GPIO, /* funtion button */
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MPP42_GPIO, /* power switch */
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MPP43_GPIO, /* power auto switch */
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MPP44_GPIO,
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MPP45_GPIO,
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MPP46_GPIO,
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MPP47_GPIO,
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MPP48_GPIO, /* function red LED */
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MPP49_GPIO,
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0
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};
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kirkwood_mpp_conf(kwmpp_config, NULL);
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return 0;
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}
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#define LED_OFF 0
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#define LED_ALARM_ON 1
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#define LED_ALARM_BLINKING 2
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#define LED_POWER_ON 3
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#define LED_POWER_BLINKING 4
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#define LED_INFO_ON 5
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#define LED_INFO_BLINKING 6
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static void __set_led(int blink_alarm, int blink_info, int blink_power,
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int value_alarm, int value_info, int value_power)
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{
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kw_gpio_set_blink(GPIO_ALARM_LED, blink_alarm);
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kw_gpio_set_blink(GPIO_INFO_LED, blink_info);
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kw_gpio_set_blink(GPIO_POWER_LED, blink_power);
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kw_gpio_set_value(GPIO_ALARM_LED, value_alarm);
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kw_gpio_set_value(GPIO_INFO_LED, value_info);
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kw_gpio_set_value(GPIO_POWER_LED, value_power);
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}
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static void set_led(int state)
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{
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switch (state) {
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case LED_OFF:
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__set_led(0, 0, 0, 1, 1, 1);
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break;
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case LED_ALARM_ON:
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__set_led(0, 0, 0, 0, 1, 1);
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break;
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case LED_ALARM_BLINKING:
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__set_led(1, 0, 0, 1, 1, 1);
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break;
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case LED_INFO_ON:
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__set_led(0, 0, 0, 1, 0, 1);
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break;
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case LED_INFO_BLINKING:
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__set_led(0, 1, 0, 1, 1, 1);
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break;
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case LED_POWER_ON:
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__set_led(0, 0, 0, 1, 1, 0);
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break;
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case LED_POWER_BLINKING:
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__set_led(0, 0, 1, 1, 1, 1);
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break;
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}
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}
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int board_init(void)
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{
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/* address of boot parameters */
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gd->bd->bi_boot_params = kw_sdram_bar(0) + 0x100;
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set_led(LED_POWER_BLINKING);
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return 0;
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}
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#ifdef CONFIG_MISC_INIT_R
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static void check_power_switch(void)
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{
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if (kw_gpio_get_value(GPIO_POWER_SWITCH)) {
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/* turn off HDD and USB power */
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kw_gpio_set_value(GPIO_HDD_POWER, 0);
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kw_gpio_set_value(GPIO_USB_VBUS, 0);
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set_led(LED_OFF);
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/* loop until released */
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while (kw_gpio_get_value(GPIO_POWER_SWITCH))
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;
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/* turn power on again */
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kw_gpio_set_value(GPIO_HDD_POWER, 1);
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kw_gpio_set_value(GPIO_USB_VBUS, 1);
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set_led(LED_POWER_BLINKING);
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}
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}
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void check_enetaddr(void)
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{
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uchar enetaddr[6];
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if (!eth_getenv_enetaddr("ethaddr", enetaddr)) {
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/* signal unset/invalid ethaddr to user */
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set_led(LED_INFO_BLINKING);
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}
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}
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static void erase_environment(void)
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{
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struct spi_flash *flash;
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printf("Erasing environment..\n");
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flash = spi_flash_probe(0, 0, 1000000, SPI_MODE_3);
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if (!flash) {
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printf("Erasing flash failed\n");
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return;
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}
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spi_flash_erase(flash, CONFIG_ENV_OFFSET, CONFIG_ENV_SIZE);
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spi_flash_free(flash);
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do_reset(NULL, 0, 0, NULL);
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}
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static void rescue_mode(void)
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{
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uchar enetaddr[6];
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printf("Entering rescue mode..\n");
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#ifdef CONFIG_RANDOM_MACADDR
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if (!eth_getenv_enetaddr("ethaddr", enetaddr)) {
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eth_random_enetaddr(enetaddr);
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if (eth_setenv_enetaddr("ethaddr", enetaddr)) {
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printf("Failed to set ethernet address\n");
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set_led(LED_ALARM_BLINKING);
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return;
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}
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}
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#endif
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setenv("bootsource", "rescue");
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}
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static void check_push_button(void)
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{
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int i = 0;
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while (!kw_gpio_get_value(GPIO_FUNC_BUTTON)) {
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udelay(100000);
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i++;
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if (i == 10)
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set_led(LED_INFO_ON);
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if (i >= 100) {
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set_led(LED_INFO_BLINKING);
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break;
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}
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}
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if (i >= 100)
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erase_environment();
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else if (i >= 10)
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rescue_mode();
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}
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int misc_init_r(void)
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{
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check_power_switch();
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check_enetaddr();
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check_push_button();
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return 0;
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}
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#endif
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#ifdef CONFIG_SHOW_BOOT_PROGRESS
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void show_boot_progress(int progress)
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{
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if (progress > 0)
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return;
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/* this is not an error, eg. bootp with autoload=no will trigger this */
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if (progress == -BOOTSTAGE_ID_NET_LOADED)
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return;
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set_led(LED_ALARM_BLINKING);
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}
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#endif
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