upstream u-boot with additional patches for our devices/boards:
https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ;
Gbit ethernet patch for some LIME2 revisions ;
with SPI flash support
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290 lines
6.2 KiB
290 lines
6.2 KiB
/*
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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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* SPDX-License-Identifier: GPL-2.0+
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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 is unset. Therefore, all netconsole packets are
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* broadcasted.
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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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static const 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 fan, 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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kw_gpio_set_value(GPIO_FAN_HIGH, 1);
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kw_gpio_set_value(GPIO_FAN_LOW, 1);
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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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kw_gpio_set_value(GPIO_FAN_HIGH, 0);
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kw_gpio_set_value(GPIO_FAN_LOW, 0);
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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_addr(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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