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u-boot/board/nm/nmhw21/board.c

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/*
* board.c
*
* Board functions for Netmodule nmhw21 board, based on AM335x EVB
*
* Copyright (C) 2018-2019 NetModule AG - http://www.netmodule.com/
* Copyright (C) 2011, Texas Instruments, Incorporated - http://www.ti.com/
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <errno.h>
#include <spl.h>
#include <serial.h>
#include <asm/arch/cpu.h>
#include <asm/arch/hardware.h>
#include <asm/arch/omap.h>
#include <asm/arch/mux.h>
#include <asm/arch/ddr_defs.h>
#include <asm/arch/clock.h>
#include <asm/arch/clk_synthesizer.h>
#include <asm/arch/gpio.h>
#include <asm/arch/mmc_host_def.h>
#include <asm/gpio.h>
#include <i2c.h>
#include <spi.h>
#include <pca953x.h>
#include <miiphy.h>
#include <cpsw.h>
#include <environment.h>
#include <watchdog.h>
#include <libfdt.h>
#include <miiphy.h>
#include <version.h>
#include "../common/bdparser.h"
#include "../common/board_descriptor.h"
#include "../common/da9063.h"
#include "board.h"
#include "reset_reason.h"
#include "sja1105.h"
#include "ui.h"
#include "um.h"
DECLARE_GLOBAL_DATA_PTR;
/*
* CPU GPIOs
*
* (C15) GPIO0_6: MB_LED_PWM
* (J18) GPIO0_16: ETH_SW_RST~ (V2.0)
* (K15) GPIO0_17: CTRL.INT~
* (T10) GPIO0_23: CAN_TERM1~ (V1.0)
* (T17) GPIO0_30: LED0.GN (<V3.2 only)
*
* (T12) GPIO1_12: SIM_SW
* (V13) GPIO1_14: GNSS_RST~
* (U13) GPIO1_15: CAN_TERM0~ (V1.0)
* (R14) GPIO1_20: BT_EN
* (V15) GPIO1_21: GSM_PWR_EN
* (U15) GPIO1_22: LED1.RD
* (T15) GPIO1_23: LED0.GN (V3.2)
* (V16) GPIO1_24: LED1.GN
* (U16) GPIO1_25: RST_GSM
* (T16) GPIO1_26: WLAN_EN
* (V17) GPIO1_27: WLAN_IRQ
* (U18) GPIO1_28: LED0.RD
*
* (U3) GPIO2_16: TIMEPULSE~ (HW26)
* (R6) GPIO2_25: RST_ETH~
*
* (J17) GPIO3_4: GNSS_EXTINT
* (K18) GPIO3_9: CTRL.W_DIS
* (L18) GPIO3_10: CTRL.RST
* (C12) GPIO3_17: UI_RST~
* (A14) GPIO3_21: RST_HUB~ (USB)
*/
#define GPIO_TO_PIN(bank, gpio) (32 * (bank) + (gpio))
#define GPIO_LED_PWM_V32 GPIO_TO_PIN(0, 6) /* V3.2 LED brightness */
#define GPIO_LED0_GREEN GPIO_TO_PIN(0, 30) /* <V3.2 */
#define GPIO_LED0_GREEN_V32 GPIO_TO_PIN(1, 23) /* V3.2 */
#define GPIO_LED0_RED GPIO_TO_PIN(1, 28)
#define GPIO_LED1_GREEN GPIO_TO_PIN(1, 24)
#define GPIO_LED1_RED GPIO_TO_PIN(1, 22)
#define GPIO_RST_GSM GPIO_TO_PIN(1, 25)
#define GPIO_PWR_GSM GPIO_TO_PIN(1, 21)
#define GPIO_WLAN_EN GPIO_TO_PIN(1, 26)
#define GPIO_BT_EN GPIO_TO_PIN(1, 20)
#define GPIO_RST_GNSS GPIO_TO_PIN(1, 14)
#define GPIO_RST_ETH_SW_N GPIO_TO_PIN(0, 16)
#define GPIO_RST_ETH_N GPIO_TO_PIN(2, 25)
#define GPIO_RST_USB_HUB_N GPIO_TO_PIN(3, 21)
#define GPIO_RST_UM_N GPIO_TO_PIN(3, 10)
#define GPIO_CTRL_WDIS_N GPIO_TO_PIN(3, 9)
#define GPIO_CTRL_INT_N GPIO_TO_PIN(0, 17)
#define GPIO_RST_UI_N GPIO_TO_PIN(3, 17)
#define CAN0_TERM_N GPIO_TO_PIN(1, 15)
#define CAN1_TERM_N GPIO_TO_PIN(0, 23)
#define GPIO_SIM_SEL GPIO_TO_PIN(1, 12)
#define GPIO_TIMEPULSE GPIO_TO_PIN(2, 16)
#define GPIO_UART2_RX GPIO_TO_PIN(0, 2) /* UART Rx Pin as GPIO */
/*
* PMIC GPIOs
*
* GPIO_5: EN_SUPPLY_GSM
* GPIO_8: VOLTAGE_SEL_UM
* GPIO_9: EN_SUPPLY_UM
*/
#define PMIC_GSM_SUPPLY_EN_IO 5
#define PMIC_UM_SUPPLY_VSEL_IO 8
#define PMIC_UM_SUPPLY_EN_IO 9
/*
* I2C IO Extender (On UI Interface)
*/
#define IOEXT_LED1_RED_MASK (1U << 7)
#define IOEXT_LED1_GREEN_MASK (1U << 6)
#define IOEXT_LED2_RED_MASK (1U << 8)
#define IOEXT_LED2_GREEN_MASK (1U << 9)
#define IOEXT_LEDS_ALL_MASK (0x03C0)
#define DDR3_CLOCK_FREQUENCY (400)
#define DURATION_FACTORY_RESET (2000) /* Reset button time to initiate factory reset */
#define DURATION_RECOVERY_BOOT (12000) /* Reset button time to initiate recovery boot */
#if (DURATION_RECOVERY_BOOT < (DURATION_FACTORY_RESET+1000))
#error Recovery boot time must be larger than factory reset + 1 second
#endif
/*
* CPU Reset Reason
*/
#define CPU_GLOBAL_COLD_RST 0x01
#define CPU_GLOBAL_WARM_SW_RST 0x02
#define CPU_WDT1_RESET 0x10
#if !defined(CONFIG_SPL_BUILD)
/* Hardware version information of mainboard, loaded by get_hw_version() */
static int hw_ver = -1;
static int hw_rev = -1;
static int hw_patch = -1;
static int hw_type = -1;
static char hw_variant_name[64];
#else
static int hw_type = -1;
static int hw_ver = -1;
static int hw_rev = -1;
static uint32_t sys_start_event = 0x0;
#endif
#if !defined(CONFIG_SPL_BUILD)
static struct ctrl_dev *cdev = (struct ctrl_dev *)CTRL_DEVICE_BASE;
#endif
#define I2C_BD_EEPROM_BUS (1)
#define BD_EEPROM_ADDR (0x50) /* CPU BD EEPROM (8kByte) is at 50 (A0) */
#define BD_ADDRESS (0x0000) /* Board descriptor at beginning of EEPROM */
#define PD_ADDRESS (0x0200) /* Product descriptor */
#define PARTITION_ADDRESS (0x0600) /* Partition Table */
static BD_Context bdctx[3]; /* The descriptor contexts */
#define CONFIG_OF_BOARD_SETUP
#if !defined(CONFIG_SPL_BUILD)
/* SPI1 for Ethernet switch configuration */
static struct module_pin_mux spi1_pin_mux[] = {
{OFFSET(ecap0_in_pwm0_out), (MODE(4) | PULLUDEN | PULLDOWN_EN | RXACTIVE)}, /* (C18) spi1_clk */
{OFFSET(uart0_rtsn), (MODE(4) | PULLUDEN | PULLUP_EN)}, /* (E17) spi1_mosi */
{OFFSET(uart0_ctsn), (MODE(4) | PULLUDEN | PULLUP_EN | RXACTIVE)}, /* (E18) spi1_miso */
{OFFSET(uart0_txd), (MODE(1) | PULLUDEN | PULLUP_EN)}, /* (E16) spi1_cs1 */
{-1}
};
static struct mii_dev olddev; /* Backup of PHY driver structure for read function override */
#endif
static void request_and_set_gpio(int gpio, const char *name, int value)
{
int ret;
ret = gpio_request(gpio, name);
if (ret < 0) {
printf("%s: Unable to request %s\n", __func__, name);
return;
}
ret = gpio_direction_output(gpio, value);
if (ret < 0) {
printf("%s: Unable to set %s as output\n", __func__, name);
goto err_free_gpio;
}
return;
err_free_gpio:
gpio_free(gpio);
}
#define REQUEST_AND_SET_GPIO(N) request_and_set_gpio(N, #N, 1);
#define REQUEST_AND_CLEAR_GPIO(N) request_and_set_gpio(N, #N, 0);
static bool is_v32_or_newer(void)
{
int full_ver = hw_ver*256 + hw_rev;
bool res = full_ver >= 0x0302;
return res;
}
static void init_leds(void)
{
REQUEST_AND_SET_GPIO(GPIO_LED0_RED);
if (is_v32_or_newer()) {
REQUEST_AND_SET_GPIO(GPIO_LED_PWM_V32);
REQUEST_AND_SET_GPIO(GPIO_LED0_GREEN_V32);
}
else {
REQUEST_AND_SET_GPIO(GPIO_LED0_GREEN);
}
REQUEST_AND_SET_GPIO(GPIO_LED1_RED);
REQUEST_AND_SET_GPIO(GPIO_LED1_GREEN);
}
static void set_status_led(int red, int green)
{
gpio_set_value(GPIO_LED0_RED, red);
if (is_v32_or_newer()) {
gpio_set_value(GPIO_LED0_GREEN_V32, green);
}
else {
gpio_set_value(GPIO_LED0_GREEN, green);
}
}
static void set_indicator_led(int red, int green)
{
gpio_set_value(GPIO_LED1_RED, red);
gpio_set_value(GPIO_LED1_GREEN, green);
}
#ifndef CONFIG_NRSW_BUILD
static void ui_set_status_led(int red, int green)
{
ui_set_top_led(red, green);
}
static void ui_set_indicator_led(int red, int green)
{
ui_set_bottom_led(red, green);
}
#endif
static void init_i2c(void)
{
i2c_set_bus_num(0);
i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
i2c_set_bus_num(1);
i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
i2c_set_bus_num(0);
}
static int _bd_init(void)
{
int old_bus;
old_bus = i2c_get_bus_num();
i2c_set_bus_num(I2C_BD_EEPROM_BUS);
if (bd_get_context(&bdctx[0], BD_EEPROM_ADDR, BD_ADDRESS) != 0) {
printf("%s() no valid bd found\n", __func__);
return -1;
}
if (bd_get_context(&bdctx[1], BD_EEPROM_ADDR, PD_ADDRESS) != 0) {
printf("%s() no valid pd found\n", __func__);
return -1;
}
#ifdef CONFIG_NRSW_BUILD
/* TODO: Check if we can get rid of this descriptor and use eMMC partition table */
if (bd_get_context(&bdctx[2], BD_EEPROM_ADDR, PARTITION_ADDRESS) != 0) {
printf("%s() no valid partition table found\n", __func__);
return -1;
}
#endif
bd_register_context_list(bdctx, ARRAY_SIZE(bdctx));
i2c_set_bus_num(old_bus);
return 0;
}
static bool is_jtag_boot(uint32_t address)
{
char* jtag_token = (char*)address;
if (strcmp(jtag_token, "JTAGBOOT") == 0) {
strcpy(jtag_token, "jtagboot");
return true;
}
else {
return false;
}
}
/*
* Read header information from EEPROM into global structure.
*/
static inline int __maybe_unused read_eeprom(void)
{
return _bd_init();
}
/*
* Selects console for SPL.
* U-Boot console is defined by CONFIG_CONS_INDEX (via menuconfig)
*/
struct serial_device *default_serial_console(void)
{
enable_uart2_pin_mux();
/* Provide UART on UART2 regardless of boot mode */
return &eserial3_device;
}
#ifndef CONFIG_SKIP_LOWLEVEL_INIT
static const struct ddr_data ddr3_data = {
/* Ratios were optimized by DDR3 training software from TI */
/* TODO: Evaluate new values and update */
.datardsratio0 = 0x39, /* 0x39 */
.datawdsratio0 = 0x3f, /* 0x40 */
.datafwsratio0 = 0x98, /* 0x96 */
.datawrsratio0 = 0x7d, /* 0x7d */
};
static const struct cmd_control ddr3_cmd_ctrl_data = {
.cmd0csratio = MT41K256M16HA125E_RATIO,
.cmd0iclkout = MT41K256M16HA125E_INVERT_CLKOUT,
.cmd1csratio = MT41K256M16HA125E_RATIO,
.cmd1iclkout = MT41K256M16HA125E_INVERT_CLKOUT,
.cmd2csratio = MT41K256M16HA125E_RATIO,
.cmd2iclkout = MT41K256M16HA125E_INVERT_CLKOUT,
};
static struct emif_regs ddr3_emif_reg_data = {
.sdram_config = MT41K256M16HA125E_EMIF_SDCFG,
.ref_ctrl = 0x61A, /* 32ms > 85°C */
.sdram_tim1 = 0x0AAAE51B,
.sdram_tim2 = 0x246B7FDA,
.sdram_tim3 = 0x50FFE67F,
.zq_config = MT41K256M16HA125E_ZQ_CFG,
.emif_ddr_phy_ctlr_1 = MT41K256M16HA125E_EMIF_READ_LATENCY,
};
#define OSC (V_OSCK/1000000)
struct dpll_params dpll_ddr = {
DDR3_CLOCK_FREQUENCY, OSC-1, 1, -1, -1, -1, -1
};
static void pmic_fix_config(void)
{
int rc;
uint8_t val;
/* Workaround for pre v1.3 config (reports ID 0x3e -> 3.14) */
rc = da9063_get_reg(PMIC_REG_CONFIG_ID, &val);
if (!rc && ((val == 0x3E) || (val == 0x12))) {
printf("Detected pre v1.3 PMIC config. Fixing registers\n");
/* Include +3V3_SENSORS (LDO3) in sequencing and enable manually */
(void)da9063_set_reg(PMIC_REG_ID_4_3, 0x07 /* Slot 7 */);
(void)da9063_set_reg(PMIC_REG_LDO3_CONT, PMIC_LDOx_EN_MASK);
/*
* Set AUTO Bit for sequencer controlled supplies, so that they get
* enabled when leaving power down state
*/
(void)da9063_set_reg(PMIC_REG_CONFIG_E, 0x3B);
(void)da9063_set_reg(PMIC_REG_CONFIG_G, 0x44);
/*
* Clear sequencer target state bit (xxx_CONT::xxx_CONF bit), so that
* regulators are disabled when entering power down state.
* Keep EN bit enabled in order not to disable supply.
*/
(void)da9063_set_reg(PMIC_REG_LDO3_CONT, PMIC_LDOx_EN_MASK);
(void)da9063_set_reg(PMIC_REG_LDO7_CONT, PMIC_LDOx_EN_MASK);
(void)da9063_set_reg(PMIC_REG_BCORE1_CONT, PMIC_LDOx_EN_MASK);
(void)da9063_set_reg(PMIC_REG_BCORE2_CONT, PMIC_LDOx_EN_MASK);
(void)da9063_set_reg(PMIC_REG_BPERI_CONT, PMIC_LDOx_EN_MASK);
(void)da9063_set_reg(PMIC_REG_BIO_CONT, PMIC_LDOx_EN_MASK);
(void)da9063_set_reg(PMIC_REG_BMEM_CONT, PMIC_LDOx_EN_MASK);
}
}
static void pmic_disable_auto_mode(void)
{
/*
* In some rare cases the automatic mode switching between synchronous and sleep
* mode can lead to PMIC issues. In this case the rail output is disabled.
* The following code fixes the operation mode to synchronous operation.
*/
uint8_t val = 0;
/* Check whether config has automatic mode defined */
(void)da9063_get_reg(PMIC_REG_BCORE1_CONF, &val);
if ((val & PMIC_CONF_MODE_MASK) == PMIC_CONF_MODE_AUTO)
{
(void)da9063_set_reg(PMIC_REG_BCORE1_CONF, PMIC_CONF_MODE_SYNC | 0x01);
(void)da9063_set_reg(PMIC_REG_BCORE2_CONF, PMIC_CONF_MODE_SYNC | 0x01);
(void)da9063_set_reg(PMIC_REG_BPERI_CONF, PMIC_CONF_MODE_SYNC | 0x01);
(void)da9063_set_reg(PMIC_REG_BIO_CONF, PMIC_CONF_MODE_SYNC | 0x01);
(void)da9063_set_reg(PMIC_REG_BMEM_CONF, PMIC_CONF_MODE_SYNC | 0x01);
}
}
static void init_pmic_spl(void)
{
int bus;
/* PMIC basic configuration */
da9063_init(CONFIG_PMIC_I2C_BUS);
bus = da9063_claim_i2c_bus();
/* Fix old configs (mainly prototype boards) */
if (hw_type == 21) {
pmic_fix_config();
/* Disable automatic mode switching */
pmic_disable_auto_mode();
}
/* Enable +3V3_GNSS (LDO6) */
(void)da9063_set_reg(PMIC_REG_LDO6_CONT, PMIC_LDOx_EN_MASK);
mdelay(2);
/* Enable +5V_CAN (LDO11 Switch) */
(void)da9063_set_reg(PMIC_REG_LDO11_CONT, PMIC_LDOx_EN_MASK);
mdelay(2);
if (hw_type == 21) {
/* hw21: trim RTC to compensate +18ppm crystal deviation */
(void)da9063_set_reg(PMIC_REG_TRIM_CLDR, (-18*10)/19);
}
else {
/* hw26 does not need trimming */
(void)da9063_set_reg(PMIC_REG_TRIM_CLDR, 0);
}
/* Mask unwanted IRQs to avoid accidental wakeup */
const uint8_t mask_a = PMIC_REG_EVENT_ONKEY_MASK |
PMIC_REG_EVENT_RTC_ALARM_MASK |
PMIC_REG_EVENT_RTC_TICK_MASK;
(void)da9063_set_reg(PMIC_REG_IRQ_MASK_A, ~(mask_a) & 0x1F);
(void)da9063_set_reg(PMIC_REG_IRQ_MASK_B, ~PMIC_REG_EVENT_COMP1V2_MASK);
(void)da9063_set_reg(PMIC_REG_IRQ_MASK_C, ~0x00);
(void)da9063_set_reg(PMIC_REG_IRQ_MASK_D, ~0x00);
da9063_release_i2c_bus(bus);
}
static void check_reset_reason(unsigned int reset_reason_shm_location)
{
volatile struct reset_registers* reset_regs = (struct reset_registers*)reset_reason_shm_location;
uint32_t start_reason = 0;
uint32_t reset_reason = 0;
uint32_t cpu_reset_reason = 0;
uint8_t state = 0x00;
int bus;
int ret;
char strbuf[256];
bus = da9063_claim_i2c_bus();
/*
* Check/write boot marker to PMIC register GP_ID_1
* If this marker is not present, we have a power on reset
*/
ret = da9063_get_reg(PMIC_GP_ID_1, &state);
if ((ret == 0) && (state != 0xC5)) {
(void)da9063_set_reg(PMIC_GP_ID_1, 0xC5);
start_reason |= SR_POR;
}
/*
* Check Fault Log register for
* - Power On Reset: No Power, RTC Delivery -> requires removal of RTC battery
* - Watchdog
*/
ret = da9063_get_reg(PMIC_REG_FAULT_LOG, &state);
if ((ret == 0) && (state != 0)) {
/* clear pmic fault log by writing back all bits currently set */
(void)da9063_set_reg(PMIC_REG_FAULT_LOG, state);
/* PMIC Power On Reset (only when RTC battery is removed) */
if (state & PMIC_FAULT_POR_MASK) {
start_reason |= SR_POR;
}
/* PMIC Watchdog */
if (state & PMIC_FAULT_TWD_ERROR_MASK) {
start_reason |= SR_WATCHDOG;
}
}
/*
* Check CPU reset reason register as the device can be reset
* by a CPU watchdog
*/
cpu_reset_reason = readl(PRM_RSTST);
if (cpu_reset_reason & CPU_WDT1_RESET) {
start_reason |= SR_WATCHDOG;
}
/* clear the CPU reset reason register */
writel((CPU_WDT1_RESET | CPU_GLOBAL_COLD_RST | CPU_GLOBAL_WARM_SW_RST), PRM_RSTST);
/*
* Check Wakeup Events
* Event Register A holds:
* - Event B, C Activity
* - nONKEY: Button
* - RTC Alarm
* - RTC Tick
* Event Register B
* - COMP 1V2: Ignition
*/
ret = da9063_get_reg(PMIC_REG_EVENT_A, &state);
if ((ret == 0) && (state != 0)) {
(void)da9063_set_reg(PMIC_REG_EVENT_A, state);
if (state & PMIC_REG_EVENT_ONKEY_MASK) {
start_reason |= (SR_WAKEUP | SR_EVT_BUTTON);
}
if (state & PMIC_REG_EVENT_RTC_ALARM_MASK) {
start_reason |= (SR_WAKEUP | SR_EVT_RTC_ALARM);
}
if (state & PMIC_REG_EVENT_RTC_TICK_MASK) {
start_reason |= (SR_WAKEUP | SR_EVT_RTC_TICK);
}
if (state & PMIC_REG_EVENT_EVENTS_B_MASK) {
uint8_t state_b;
ret = da9063_get_reg(PMIC_REG_EVENT_B, &state_b);
if ((ret == 0) && (state_b != 0)) {
(void)da9063_set_reg(PMIC_REG_EVENT_B, state_b);
if (state_b & PMIC_REG_EVENT_COMP1V2_MASK) {
start_reason |= (SR_WAKEUP | SR_EVT_IGNITION);
}
}
}
}
/*
* Check for software reboot indicated by OS via shared memory
* - checksum valid?
* - Reason == 'REBO' or 'OOPS'
*/
if (rr_is_reset_reason_valid(reset_regs))
{
if (reset_regs->rr_value == RR_REBOOT_PATTERN) {
start_reason |= SR_REBOOT;
}
else if (reset_regs->rr_value == RR_OOPS_PATTERN) {
/* Treat kernel oops as reboot */
start_reason |= SR_REBOOT;
}
else if (reset_regs->rr_value == RR_WAKE_PATTERN) {
start_reason |= SR_WAKEUP;
}
else {
/* Unknown reset reason */
}
}
/*
* Priority decoder for start and reset reason
*/
if (start_reason & SR_WATCHDOG) {
/* Watchdog has highest priority as it also sets POR and other events */
start_reason = SR_WATCHDOG;
reset_reason = RR_EXTERNAL_WATCHDOG_PATTERN;
}
else if (start_reason & SR_POR) {
start_reason = SR_POR;
reset_reason = RR_POWEROFF_PATTERN;
}
else if (start_reason & SR_WAKEUP) {
/* Include start events when wakeup is detected */
start_reason = SR_WAKEUP | (start_reason & SR_EVT_WAKE_MASK);
reset_reason = RR_WAKE_PATTERN;
}
else if (start_reason & SR_REBOOT) {
start_reason = SR_REBOOT;
reset_reason = reset_regs->rr_value;
}
else {
/* Unknown start reason, assume reboot */
start_reason = SR_REBOOT;
reset_reason = reset_regs->rr_value;
}
sys_start_event = start_reason;
rr_set_reset_reason(reset_regs, reset_reason);
rr_set_start_reason(reset_regs, start_reason);
da9063_release_i2c_bus(bus);
rr_start_reason_to_str(reset_regs->sr_events, strbuf, sizeof(strbuf));
printf("\nStart Events: %s\n", strbuf);
}
static void pmic_ignition_gate_on(void)
{
int bus;
uint8_t val;
bus = da9063_claim_i2c_bus();
/* Configure GPIO15 to permanent high, so that ignition sense signal is readable */
(void)da9063_set_reg(PMIC_REG_GPIO14_15, 0xCC); /* GPIO14/15 = Outputs open drain */
(void)da9063_get_reg(PMIC_REG_CONFIG_L, &val); /* Enable pull ups on GPIO14/15 */
val |= 0xC0;
(void)da9063_set_reg(PMIC_REG_CONFIG_L, val);
(void)da9063_set_reg(PMIC_REG_CONTROL_D, 0x00); /* No blinking, state selected by GPIOxx_MODE */
(void)da9063_get_reg(PMIC_REG_GPIO_MODE8_15, &val); /* Set to GPIO14,15 to high */
val |= 0xC0;
(void)da9063_set_reg(PMIC_REG_GPIO_MODE8_15, val);
/*
* Comparator input is debounced (10ms), see DA9063 datasheet 5.13.5
* Give enough time to stabilize input reading.
*/
mdelay(10+10);
da9063_release_i2c_bus(bus);
}
static void powerdown(void)
{
int bus;
bus = da9063_claim_i2c_bus();
/* Final call, will not return */
(void)da9063_set_reg(PMIC_REG_CONTROL_A, 0x00);
da9063_release_i2c_bus(bus);
puts("ERROR: PMIC power down failed\n");
for (;;) {}
}
static void reset(void)
{
/* Code copied from arm v7 lib */
udelay (50000);
disable_interrupts();
reset_misc();
reset_cpu(0);
puts("ERROR: Reset failed\n");
for (;;) {}
}
static void stop_if_ignition_is_off(void)
{
uint8_t state = 0x00;
int bus;
int ret;
bus = da9063_claim_i2c_bus();
ret = da9063_get_reg(PMIC_REG_STATUS_A, &state);
if (ret == 0) {
if ((state & PMIC_REG_STATUS_A_COMP1V2_MASK) == PMIC_REG_STATUS_A_COMP1V2_MASK) {
puts("Ignition : On\n");
}
else {
puts("Ignition : Off\n");
/*
* Ignition is off, if this is a power-on start, power down
* as this is considered an unwanted system start.
*/
/*
* There is a chance for a race condition, when ignition is enabled
* between the check above and here. In this case we should just reset
* not power down.
* Although the risk is minimal here due to the very short time interval
* we do the check. The same logic will have to be added in other
* components.
*/
ret = da9063_get_reg(PMIC_REG_EVENT_B, &state);
if ((ret == 0) && ((state & PMIC_REG_EVENT_COMP1V2_MASK) == 0)) {
powerdown();
}
else {
reset();
}
}
}
da9063_release_i2c_bus(bus);
}
static void init_bd_spl(void)
{
hw_type = 21; /* Assume hw21, unless BD tells different */
if (read_eeprom() >= 0) {
int hw_type_from_bd = -1;
bd_get_hw_version(&hw_ver, &hw_rev);
/* If entry is found returns value, otherwise 0 */
bd_get_hw_type(&hw_type_from_bd);
if (hw_type_from_bd != 0) {
hw_type = hw_type_from_bd;
}
}
else {
puts("Could not get board ID.\n");
}
}
void am33xx_spl_board_init(void)
{
/* Set CPU speed to 600 MHz (fix) */
dpll_mpu_opp100.m = MPUPLL_M_600;
/* Set CORE Frequencies to OPP100 (600MHz) */
do_setup_dpll(&dpll_core_regs, &dpll_core_opp100);
/* Configure both I2C buses used */
init_i2c();
/* Get board descriptor */
init_bd_spl();
/* Detect reset/Wakeup reason */
check_reset_reason(RESET_REASON_SHM_LOCATION);
/* Switch on ignition gate so we can read state later */
pmic_ignition_gate_on();
/* Setup PMIC */
init_pmic_spl();
/*
* If this is a power-on start, see if ignition is active.
* If not, power down as this is considered an unwanted system start.
*/
if (sys_start_event & SR_POR) {
stop_if_ignition_is_off();
}
if (is_v32_or_newer()) {
enable_led_mux_v32();
enable_uart4_pin_mux();
}
else {
enable_led_mux();
}
init_leds();
set_status_led(1, 0); /* Red */
set_indicator_led(1, 0); /* Red */
#ifndef CONFIG_NRSW_BUILD
/* UI detection */
REQUEST_AND_SET_GPIO(GPIO_RST_UI_N);
ui_init(CONFIG_UI_I2C_BUS);
ui_set_status_led(1, 0); /* Red */
ui_set_indicator_led(1, 0); /* Red */
#endif
/* Set MPU Frequency to what we detected now that voltages are set */
do_setup_dpll(&dpll_mpu_regs, &dpll_mpu_opp100);
/* Debugger can place marker at end of SRAM to stop boot here */
if (is_jtag_boot(CONFIG_JTAG_MARKER_SPL))
{
puts("Detected JTAG boot, executing bkpt #0\n");
__asm__ __volatile__ ("bkpt #0");
}
}
const struct dpll_params *get_dpll_ddr_params(void)
{
dpll_ddr.n = (get_osclk() / 1000000) - 1;
return &dpll_ddr;
}
void set_uart_mux_conf(void)
{
enable_uart0_pin_mux();
enable_uart2_pin_mux();
}
void set_mux_conf_regs(void)
{
enable_board_pin_mux();
}
const struct ctrl_ioregs ioregs = {
.cm0ioctl = MT41K256M16HA125E_IOCTRL_VALUE,
.cm1ioctl = MT41K256M16HA125E_IOCTRL_VALUE,
.cm2ioctl = MT41K256M16HA125E_IOCTRL_VALUE,
.dt0ioctl = MT41K256M16HA125E_IOCTRL_VALUE,
.dt1ioctl = MT41K256M16HA125E_IOCTRL_VALUE
};
void sdram_init(void)
{
config_ddr(DDR3_CLOCK_FREQUENCY, &ioregs,
&ddr3_data,
&ddr3_cmd_ctrl_data,
&ddr3_emif_reg_data, 0);
}
#endif /* CONFIG_SKIP_LOWLEVEL_INIT */
#if !defined(CONFIG_SPL_BUILD)
/*
* Override for Ethernet link timeout definition,
* with option to specify via environment variable linktimeout
*/
int eth_phy_timeout(void)
{
const char* timeout_env = NULL;
int timeout;
timeout = PHY_ANEG_DEFAULT_TIMEOUT;
/*
* Check if timeout has been defined by environment.
* Valid range: 1000..10000 milliseconds
*/
timeout_env = getenv("linktimeout");
if (timeout_env != NULL) {
timeout = simple_strtoul(timeout_env, NULL, 10);
if (timeout == 0) {
timeout = PHY_ANEG_DEFAULT_TIMEOUT;
} else if (timeout < 1000) {
timeout = 1000;
} else if (timeout > 10000) {
timeout = 10000;
}
}
return timeout;
}
#endif /* !defined(CONFIG_SPL_BUILD) */
#if !defined(CONFIG_SPL_BUILD)
static void init_ethernet(void)
{
REQUEST_AND_CLEAR_GPIO(GPIO_RST_ETH_N);
/* Minimum Reset Pulse = 5us (switch), 20us (TJA1100), 100us (SMSC8720) */
mdelay(1);
gpio_set_value(GPIO_RST_ETH_N, 1);
}
static void init_ethernet_v2(void)
{
/* Put switch and PHYs in reset */
REQUEST_AND_CLEAR_GPIO(GPIO_RST_ETH_N);
REQUEST_AND_CLEAR_GPIO(GPIO_RST_ETH_SW_N);
/* Take switch out of reset. Minimum Reset Pulse = 5us */
mdelay(1);
gpio_set_value(GPIO_RST_ETH_SW_N, 1);
/* Give clocks time to stabilize */
mdelay(1);
}
static void init_ethernet_phys_v2(void)
{
/* Take Ethernet PHYs out of reset */
/* Minimum Reset Pulse = 20us (TJA1102), 100us (SMSC8720) */
mdelay(1);
gpio_set_value(GPIO_RST_ETH_N, 1);
}
static void configure_ethernet_switch(void)
{
static struct spi_slave *spi = 0;
if (spi == 0) {
configure_module_pin_mux(spi1_pin_mux);
spi_init();
/* Maximum bitrate supported by switch is 17.8 MHz */
spi = spi_setup_slave(CONFIG_SJA1105_SPI_BUS,
CONFIG_SJA1105_SPI_CS,
15000000 /* Frequency 15 MHz */,
SPI_MODE_1);
sja1105_init(spi);
}
spi_claim_bus(spi);
/* 1ms delay after init before first SPI acces */
mdelay(1);
sja1105_configure_firmware();
/* Configure clocks */
sja1105_configure_mode_and_clocks();
/* Configure IO pads */
sja1105_configure_io();
spi_release_bus(spi);
}
static void configure_broadr_phys(void)
{
unsigned char phy_start;
unsigned char phy;
const char *devname;
int err = 0;
if (hw_ver == 1) {
phy_start = 6; /* HW v1.0 has PHYs on 6 and 7, by accident */
}
else {
phy_start = 2; /* From HW v2.0 addresses are correct at 2 and 3 */
}
/* Get current device */
devname = miiphy_get_current_dev();
/* Configure TJA1100 BroadR PHY ports as slave and restart FSM */
for (phy = phy_start; phy <= phy_start+1 && err == 0; phy++) {
/* Extended control register : bit 15 -> Link control disabled */
if (0 != miiphy_write (devname, phy, 0x11, 0x0004)) { err++; }
/* Configuration register 1 : bit 15 -> PHY configured as Slave */
if (0 != miiphy_write (devname, phy, 0x12, 0x0910)) { err++; }
/* Extended control register : link control enable and training restart */
if (0 != miiphy_write (devname, phy, 0x11, 0x9A04)) { err++; }
}
if (err != 0) {
puts("BroadR not ready, ");
}
else {
puts("BroadR ready, ");
}
}
static void init_usb_hub(void)
{
REQUEST_AND_CLEAR_GPIO(GPIO_RST_USB_HUB_N);
/* Minimum Reset Pulse = 1us */
mdelay(2);
gpio_set_value(GPIO_RST_USB_HUB_N, 1);
}
#ifndef CONFIG_NRSW_BUILD
static void init_user_module(void)
{
int bus;
bus = da9063_claim_i2c_bus();
puts("UM: ");
REQUEST_AND_CLEAR_GPIO(GPIO_RST_UM_N); /* Assert reset (active low) */
REQUEST_AND_CLEAR_GPIO(GPIO_CTRL_WDIS_N) /* TODO: CHECK */
/* TODO: Should this be done at first power up as well? */
da9063_set_gpio(PMIC_UM_SUPPLY_EN_IO, 0); /* Switch Supply off */
mdelay(30); /* Give time to discharge output */
da9063_set_gpio(PMIC_UM_SUPPLY_VSEL_IO, 0); /* Set voltage to 3.3V */
mdelay(1);
da9063_set_gpio(PMIC_UM_SUPPLY_EN_IO, 1); /* Enable Supply */
mdelay(10);
gpio_direction_input(GPIO_RST_UM_N); /* Release reset (open drain) */
mdelay(10);
da9063_release_i2c_bus(bus);
mdelay(200); /* Give module some time to boot */
um_init(CONFIG_UM_I2C_BUS); /* Try to detect user module */
if (um_present()) {
const char* type = um_type_as_str();
uint8_t ver = 0;
uint8_t rev = 0;
um_version(&ver, &rev);
printf("%s V%d.%d\n", type, ver, rev);
} else {
puts("N/A\n");
}
}
#endif
static void init_sim_mux(void)
{
/*
* Switch pluggable micro SIM to onboard modem (mux = 1)
*/
REQUEST_AND_SET_GPIO(GPIO_SIM_SEL);
}
static void init_gsm(void)
{
/*
* Perform power up sequence for TOBY-L2 modem.
*
* TOBY-L2 series can be switched on in one of the following ways:
* - Rising edge on the VCC pin to a valid voltage for module supply,
* i.e. applying module supply
* - Low level on the PWR_ON pin, which is normally set high by an
* internal pull-up, for a valid time period when the applied VCC
* voltage is within the valid operating range (see section 4.2.8).
* - Low level on the RESET_N pin, which is normally set high by an
* internal pull-up, for a valid time period when the applied VCC
* voltage is within the valid operating range (see section 4.2.9).
*
* PWR_ON low time: 5 ms - Low time to switch-on the module
* RESET_N low time: 18..800 ms - Low time to switch-on the module
* 2.1..15 s - Low time to reset the module
* 16 s - Low time to switch-off the module
*
* References:
* - uBlox TOBY-L2 Datasheet UBX-13004573 - R24
* 2.3.1 Module power-on
* 4.2.8 PWR_ON pin
* 4.2.9 RESET_N pin
*
* Functionality Yocto:
* - Leave GSM power enable as is (default at power up = off)
* - Set reset line inactive (note: inverter logic in HW present)
* - Leave button unpressed (note: inverter logic in HW present)
* - Modem shall be enabled by Linux system by enabling GSM power
* supply
*/
#ifdef CONFIG_NRSW_BUILD
int bus;
puts("GSM: ");
bus = da9063_claim_i2c_bus();
/* TODO: Keep Power-On and use GSM Modem Reset Signal to restart */
REQUEST_AND_SET_GPIO(GPIO_RST_GSM); /* Assert reset (active high) */
REQUEST_AND_CLEAR_GPIO(GPIO_PWR_GSM); /* Keep power switch inactive (released) */
da9063_set_gpio(PMIC_GSM_SUPPLY_EN_IO, 0); /* Switch GSM Supply off */
mdelay(30+100); /* Give time to discharge supply */
/* Keep of for 100ms, #3.3.2 */
da9063_set_gpio(PMIC_GSM_SUPPLY_EN_IO, 1); /* Enable GSM supply */
mdelay(10);
gpio_set_value(GPIO_RST_GSM, 0); /* Take modem out of reset */
mdelay(300); /* Wait for power to stabilizy, #3.4.2 */
gpio_set_value(GPIO_PWR_GSM, 1); /* Generate power on event, #3.4.2 */
mdelay(1200);
gpio_set_value(GPIO_PWR_GSM, 0);
da9063_release_i2c_bus(bus);
puts("ready\n");
#else
puts("GSM: ");
REQUEST_AND_CLEAR_GPIO(GPIO_RST_GSM); /* Set reset inactive (active high) */
REQUEST_AND_CLEAR_GPIO(GPIO_PWR_GSM); /* Set power switch inactive/released (active high) */
puts("init\n");
#endif
}
static void init_gnss(void)
{
/*
* Release GNSS reset line, so that module starts up early
*/
REQUEST_AND_SET_GPIO(GPIO_RST_GNSS);
}
static void init_timepulse(void)
{
/*
* Configure timepulse as input.
*
* Note:
* Was output on HW21, function SIM_PRES_N, never worked.
* Therefore reused as timepulse input on hw26.
*/
/*
* Action: None, just leave pin at reset default = input
*/
}
#endif /* !defined(CONFIG_SPL_BUILD) */
/*
* Basic board specific setup. Pinmux has been handled already.
* Not called in SPL build.
*/
int board_init(void)
{
#if defined(CONFIG_HW_WATCHDOG)
hw_watchdog_init();
#endif
gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
/* Configure both I2C buses used */
init_i2c();
da9063_init(CONFIG_PMIC_I2C_BUS);
#ifndef CONFIG_NRSW_BUILD
/* UI detection */
REQUEST_AND_SET_GPIO(GPIO_RST_UI_N);
ui_init(CONFIG_UI_I2C_BUS);
#endif
printf("OSC: %lu MHz\n", get_osclk()/1000000);
return 0;
}
#if !defined(CONFIG_SPL_BUILD)
void set_console(void)
{
const char *defaultconsole = getenv("defaultconsole");
if (defaultconsole == 0) {
/* Use the default console */
setenv("defaultconsole", "ttyS2");
}
}
#ifdef CONFIG_NRSW_BUILD
static void set_devicetree_name(void)
{
char devicetreename[64];
/* add hardware versions to environment */
if (bd_get_devicetree(devicetreename, sizeof(devicetreename)) != 0) {
printf("Devicetree name not found, using default name\n");
strcpy(devicetreename, "am335x-nmhw21-prod1.dtb");
}
setenv("fdt_image", devicetreename);
}
static void set_root_partition(void)
{
int boot_partition;
/* add active root partition to environment */
boot_partition = bd_get_boot_partition();
if (boot_partition > 1) {
boot_partition = 0;
}
/* mmcblk1p1 => root0, mmcblk1p2 => root1 so +1 */
setenv_ulong("root_part", boot_partition + 1);
}
#endif
static void get_variant_name(void)
{
bd_get_variantname(hw_variant_name, sizeof(hw_variant_name));
printf("SYS: %s\n", hw_variant_name);
}
#ifdef CONFIG_NRSW_BUILD
static void get_hw_version(void)
{
char hw_versions[16];
char new_env[256]; /* current bootargs = 84 bytes */
bd_get_hw_version(&hw_ver, &hw_rev);
bd_get_hw_patch(&hw_patch);
bd_get_hw_type(&hw_type);
if (hw_type == 0) {
/* Fallback to HW21 if tag is not present */
hw_type = 21;
}
printf("HW%02d: V%d.%d\n", hw_type, hw_ver, hw_rev);
/* add hardware versions to environment */
snprintf(hw_versions, sizeof(hw_versions), "CP=%d.%d", hw_ver, hw_rev);
snprintf(new_env, sizeof(new_env), "setenv bootargs $bootargs %s", hw_versions);
setenv("add_version_bootargs", new_env);
}
#else
static void get_hw_version(void)
{
bd_get_hw_version(&hw_ver, &hw_rev);
bd_get_hw_patch(&hw_patch);
bd_get_hw_type(&hw_type);
if (hw_type == 0) {
/* Fallback to HW21 if tag is not present */
hw_type = 21;
}
printf("MB: V%d.%d (HW%2d)\n", hw_ver, hw_rev, hw_type);
}
#endif
static void get_pmic_version(void)
{
uint8_t val = 0x00;
uint8_t ver, rev;
int bus;
int rc;
bus = da9063_claim_i2c_bus();
rc = da9063_get_reg(PMIC_REG_CONFIG_ID, &val);
if (!rc) {
ver = (val >> 4) & 0xF;
rev = (val >> 0) & 0xF;
} else {
ver = 0;
rev = 0;
}
da9063_release_i2c_bus(bus);
/* Quirk:
* If reported version is 3.14, this is one of the 5 prototypes which have
* been programmed multiple times --> Treat these as 1.0
*/
if ((ver == 3) && (rev == 14)) {
ver = 1;
rev = 0;
}
printf("PMIC: V%d.%d\n", ver, rev);
}
static void check_jtag_boot(void)
{
if (is_jtag_boot(CONFIG_JTAG_MARKER_UBOOT)) {
char *bootcmd = getenv("bootcmd");
setenv ("bootcmd", "");
/* Save original bootcmd in "bootcmd_orig" to allow manual boot */
setenv ("bootcmd_orig", bootcmd);
puts("Detected JTAG boot. Waiting on command line\n");
}
}
static void check_fct(void)
{
/*
* Check whether an I2C device (EEPROM) is present at address 0xA2/0x51
* In this case we are connected to the factory test station.
* Clear the bootcmd, so that test system can easily connect.
*/
int old_bus;
old_bus = i2c_get_bus_num();
i2c_set_bus_num(I2C_BD_EEPROM_BUS);
/* If probe fails we are sure no eeprom is connected */
if (i2c_probe(0x51) == 0) {
setenv ("bootcmd", "");
puts("Detected factory test system. Waiting on command line\n");
}
i2c_set_bus_num(old_bus);
}
static bool get_button_state(void)
{
uint8_t state = 0x00;
bool pressed = false;
int bus;
int rc;
bus = da9063_claim_i2c_bus();
rc = da9063_get_reg(PMIC_REG_STATUS_A, &state);
da9063_release_i2c_bus(bus);
if (!rc) {
pressed = (state & 0x01) == 0x01;
}
return pressed;
}
static void blink_led(int pulses)
{
const int pulse_width = 400*1000; /* 400ms */
#ifdef CONFIG_NRSW_BUILD
/* Assumes status LED is orange */
set_status_led(0, 0);
ui_set_top_led(0, 0);
#endif
while (pulses) {
udelay(pulse_width);
set_status_led(1, 1);
#ifndef CONFIG_NRSW_BUILD
ui_set_status_led(1, 1);
#endif
udelay(pulse_width);
set_status_led(0, 0);
#ifndef CONFIG_NRSW_BUILD
ui_set_status_led(0, 0);
#endif
pulses--;
}
udelay(pulse_width);
set_status_led(1, 1); /* Orange */
#ifndef CONFIG_NRSW_BUILD
ui_set_status_led(1, 1);
#endif
}
#define RESET_CHECK_PERIOD (100) /* 100 ms */
typedef enum _action_t
{
NONE = 0,
WAIT,
FACTORY_RESET,
RECOVERY_BOOT
} action_t;
static void uart2_rx_gpio_pin_mux(void)
{
/* Configure UART2 rxd pin as GPIO */
static struct module_pin_mux uart2_gpio_pin_mux[] = {
{OFFSET(spi0_sclk), (MODE(7) | PULLUDEN | PULLUP_EN | RXACTIVE)}, /* (A17) uart2_rxd = gpio0_2 */
{-1}
};
configure_module_pin_mux(uart2_gpio_pin_mux);
}
static void uart2_rx_rx_pin_mux(void)
{
/* Configure UART2 rxd pin as rxd function */
static struct module_pin_mux uart2_pin_mux[] = {
{OFFSET(spi0_sclk), (MODE(1) | PULLUDEN | PULLUP_EN | RXACTIVE)}, /* (A17) uart2_rxd */
{-1}
};
configure_module_pin_mux(uart2_pin_mux);
}
static bool get_rxd_state(void)
{
uart2_rx_gpio_pin_mux();
(void)gpio_request(GPIO_UART2_RX, "");
int val = gpio_get_value(GPIO_UART2_RX);
gpio_free(GPIO_UART2_RX);
uart2_rx_rx_pin_mux();
return (val == 0);
}
static int check_button(int time, bool button)
{
/*
* Hardware button logic
*
* input:
* button: current button press state (true = pressed)
* logic:
* - if button is not pressed initially, return action NONE for all
* invocations (state NO_ACTION)
* - if button pressed initially, return action WAIT and measure duration
* of press (state PRESSED).
* - while button is pressed, measure time, indicate actions with LED,
* - when button is released, check time and decide on factory reset
* or recovery boot.
*/
typedef enum _state_t { INIT = 0, PRESSED, DONE } state_t;
static state_t state = INIT; /* Current state */
static action_t act = NONE; /* Action to report to user, returned at function end */
static int duration = 0;
if (time == 0) {
state = INIT;
}
switch (state) {
case INIT:
if (button) {
/* Pressed, start to measure time until released */
duration = 0;
act = WAIT;
state = PRESSED;
}
else {
/* If not pressed, no further action is possible */
act = NONE;
state = DONE;
}
break;
case PRESSED:
if (button) {
duration += RESET_CHECK_PERIOD;
if (duration == DURATION_FACTORY_RESET) {
/* Indicate factory reset threshold */
blink_led(1);
}
else if (duration == DURATION_RECOVERY_BOOT) {
/* Indicate recovery boot threshold and leave state */
blink_led(2);
act = RECOVERY_BOOT;
state = DONE;
}
}
else {
/* Check how long button was pressed */
if (duration >= DURATION_RECOVERY_BOOT) {
act = RECOVERY_BOOT;
state = DONE;
}
else if (duration >= DURATION_FACTORY_RESET) {
act = FACTORY_RESET;
state = DONE;
}
else {
/* too short, nothing to do */
act = NONE;
state = DONE;
}
}
break;
case DONE:
/* Final state when an action has been chosen */
break;
default:
break;
}
return act;
}
static int check_break_length(int time, bool rx_line)
{
/*
* RS232 RxD Reset input logic
*
* Treats RxD line as reset input. Line is considered active when
* break condition applies (RS232 line > 3.0 V)
*
* input:
* rx_line: true if rxd input is '0' (break condition)
* logic:
* see explanation in check_button()
* additional logic is added to debounce input
*/
#define BREAK_DEB_TIME 500
typedef enum _state_t { WAIT_BREAK = 0, HAVE_BREAK, DONE } state_t;
static state_t state = WAIT_BREAK; /* Current state */
static action_t act = NONE; /* Action to report to user, returned at function end */
static int duration = 0;
static int wait_time = 0;
if (time == 0) {
state = WAIT_BREAK;
wait_time = BREAK_DEB_TIME;
}
switch (state) {
case WAIT_BREAK:
if (rx_line) {
/* Break detected, start to measure time */
duration = 0;
wait_time = BREAK_DEB_TIME;
act = WAIT;
state = HAVE_BREAK;
}
if (wait_time > 0) {
wait_time -= RESET_CHECK_PERIOD;
act = WAIT;
}
else {
/* If no break seen, stop here */
act = NONE;
state = DONE;
}
break;
case HAVE_BREAK:
if (rx_line) {
wait_time = BREAK_DEB_TIME;
duration += RESET_CHECK_PERIOD;
if (duration == DURATION_FACTORY_RESET) {
/* Indicate factory reset threshold */
blink_led(1);
}
else if (duration == DURATION_RECOVERY_BOOT) {
/* Indicate recovery boot threshold and leave state */
blink_led(2);
act = RECOVERY_BOOT; /* TODO: maybe remain in state until break removed */
state = DONE;
}
}
if (wait_time > 0) {
wait_time -= RESET_CHECK_PERIOD;
}
else {
/* puts("break condition released\n"); */
/* Check how long button was pressed */
if (duration >= DURATION_RECOVERY_BOOT) {
act = RECOVERY_BOOT;
state = DONE;
}
else if (duration >= DURATION_FACTORY_RESET) {
act = FACTORY_RESET;
state = DONE;
}
else {
/* too short, nothing to do */
act = NONE;
state = DONE;
}
}
break;
case DONE:
/* Final state when an action has been chosen */
break;
default:
break;
}
return act;
}
static int check_break_command(int time, int has_input, int c)
{
/*
* Break command logic
*
* Tries to receive the break button (system magic key) and a command to execute.
*
* input:
* has_input: true if a character is available
* c: character code (can be 0x00 for break condition, system magic key)
* logic:
* - waits up to 500 ms to receive a break character. if character is not seen,
* stops here, action = NONE. if character is detected goes to next state
* - waits up to 500 ms to receive command character. if character is not seen,
* stops here, action = NONE. if character is detected define action accordingly
* 'f': factory reset
* 'r': recovery boot
*/
#define BREAK_WAIT_TIME 1000 /* Initial wait time for break character */
#define CHARACTER_WAIT_TIME 1500 /* Subsequent wait time for command */
typedef enum _state_t { WAIT_BREAK = 1, WAIT_COMMAND, DONE } state_t;
static state_t state = WAIT_BREAK; /* Current state */
static action_t act = NONE; /* Action to report to user, returned at function end */
static int wait_time;
if (time == 0) {
state = WAIT_BREAK;
wait_time = BREAK_WAIT_TIME;
}
switch (state) {
case WAIT_BREAK: /* Wait for break indication */
act = WAIT;
if (has_input) {
if (c == 0x00) {
/* puts("break detected\n"); */
wait_time = CHARACTER_WAIT_TIME;
state = WAIT_COMMAND;
}
}
if (wait_time > 0) {
wait_time -= RESET_CHECK_PERIOD;
}
else {
/* No break received, nothing to do from our side */
act = NONE;
state = DONE;
}
break;
case WAIT_COMMAND:
if (has_input) {
wait_time = CHARACTER_WAIT_TIME;
if (c == 0x00) {
/* puts("break detected\n"); */
act = WAIT;
}
else if (c == 'f') {
blink_led(1);
act = FACTORY_RESET;
state = DONE;
}
else if (c == 'r') {
blink_led(2);
act = RECOVERY_BOOT;
state = DONE;
}
else {
/* Unknown command */
act = NONE;
state = DONE;
}
}
if (wait_time > 0) {
wait_time -= RESET_CHECK_PERIOD;
}
else {
/* puts("character timeout\n"); */
act = NONE;
state = DONE;
}
break;
case DONE:
/* Final state when an action has been chosen */
break;
default:
break;
}
return act;
}
static void check_reset_button(void)
{
/*
* Runs state machines of all reset sources to find out if one detects
* an action.
*
* SMs return
* - WAIT if they are still trying to get a result.
* - NONE if they know there is no action required.
* - FACTORY_RESET, RECOVERY_BOOT if detected.
*/
action_t action = NONE;
int counter = 0;
do {
action_t a_[3];
bool button;
bool rx_line;
int has_input;
int c = -1;
/* Get state machine inputs */
button = get_button_state();
rx_line = get_rxd_state();
has_input = tstc();
if (has_input) {
c = getc();
}
/* run processing state machines */
a_[0] = check_button(counter, button);
if (hw_type == 26) {
/* break function are only present on hw26 */
a_[1] = check_break_length(counter, rx_line);
a_[2] = check_break_command(counter, has_input, c);
}
else {
a_[1] = NONE;
a_[2] = NONE;
}
/* if all SMs are sure there is not action, stop here */
if ((a_[0] == NONE) && (a_[1] == NONE) && (a_[2] == NONE)) {
action = NONE;
break;
}
/* if one of the SMs has an action, stop here */
for (int i=0; i<3; i++) {
if ((a_[i] == FACTORY_RESET) || (a_[i] == RECOVERY_BOOT)) {
action = a_[i];
break;
}
}
mdelay(RESET_CHECK_PERIOD);
counter += RESET_CHECK_PERIOD;
} while ((action != FACTORY_RESET) && (action != RECOVERY_BOOT));
switch (action) {
case FACTORY_RESET: {
char new_bootargs[512];
char *bootargs = getenv("bootargs");
puts("Do factory reset during boot...\n");
if (bootargs == 0) bootargs = "";
strncpy(new_bootargs, bootargs, sizeof(new_bootargs));
strncat(new_bootargs, " factory-reset", sizeof(new_bootargs));
setenv("bootargs", new_bootargs);
break;
}
case RECOVERY_BOOT:
puts("Booting recovery image...\n");
setenv("bootcmd", "run recovery");
break;
default:
set_indicator_led(0, 0);
break;
}
}
#endif /* !defined(CONFIG_SPL_BUILD) */
int board_late_init(void)
{
#if !defined(CONFIG_SPL_BUILD)
#ifndef CONFIG_NRSW_BUILD
int ui_ver = -1;
#endif
if (read_eeprom() < 0) {
puts("Could not get board ID.\n");
}
get_variant_name();
get_hw_version();
get_pmic_version();
/* Let user know we're starting */
init_leds();
set_status_led(1, 1); /* Orange */
set_indicator_led(0, 0); /* Off */
#ifndef CONFIG_NRSW_BUILD
ui_set_status_led(1, 1); /* Orange */
ui_set_indicator_led(0, 0); /* Off */
#endif
#ifdef CONFIG_NRSW_BUILD
set_root_partition();
set_devicetree_name();
#endif
/* Initialize pins */
REQUEST_AND_CLEAR_GPIO(GPIO_WLAN_EN);
REQUEST_AND_CLEAR_GPIO(GPIO_BT_EN);
REQUEST_AND_SET_GPIO(CAN0_TERM_N); /* Unused on V2.0 */
REQUEST_AND_SET_GPIO(CAN1_TERM_N);
#ifndef CONFIG_NRSW_BUILD
ui_ver = ui_version();
switch (ui_ver) {
case 1: puts("UI: V1.0\n"); break;
case 2: puts("UI: V2.0\n"); break;
default: puts("UI: N/A\n"); break;
}
#endif
if (hw_ver == 1) {
/* On HW v1.0 switch and PHYs share the same reset line.
* Clocks for the PHYs are only present once switch is configured
* Thus the switch needs to be configured once to allow to bootstrap
* the PHYs. This requires the assertion of reset again, which also
* reset the switch (a 2nd time). It therefore has to be configured
* a 2nd time.
*/
init_ethernet();
configure_ethernet_switch();
/* Reset ETH system again to pin strap PHYs */
mdelay(10);
gpio_set_value(GPIO_RST_ETH_N, 0);
mdelay(10);
gpio_set_value(GPIO_RST_ETH_N, 1);
/* Configure switch again, after 2nd reset */
configure_ethernet_switch();
}
else {
init_ethernet_v2();
configure_ethernet_switch();
/*
* Now that Ethernet switch is running, PHY clocks are present.
* Take PHYs out of reset.
*/
init_ethernet_phys_v2();
}
init_usb_hub();
#ifndef CONFIG_NRSW_BUILD
init_user_module();
#endif
init_sim_mux();
init_gsm();
init_gnss();
init_timepulse();
/*
* Check if a user action is requested
* - Short press: factory reset
* - Long press: recovery boot
*/
check_reset_button();
set_status_led(1, 1); /* Orange */
set_indicator_led(0, 0); /* Off */
#ifndef CONFIG_NRSW_BUILD
set_status_led(1, 1); /* Orange */
set_indicator_led(0, 0); /* Off */
#endif
check_fct();
check_jtag_boot();
#endif
return 0;
}
#ifndef CONFIG_DM_ETH
#if (defined(CONFIG_DRIVER_TI_CPSW) && !defined(CONFIG_SPL_BUILD)) || \
(defined(CONFIG_SPL_ETH_SUPPORT) && defined(CONFIG_SPL_BUILD))
static void cpsw_control(int enabled)
{
/* VTP can be added here */
return;
}
static struct cpsw_slave_data cpsw_slaves[] = {
{
.slave_reg_ofs = 0x208,
.sliver_reg_ofs = 0xd80,
.phy_if = PHY_INTERFACE_MODE_RMII,
.phy_addr = 1
}
};
static struct cpsw_platform_data cpsw_data = {
.mdio_base = CPSW_MDIO_BASE,
.cpsw_base = CPSW_BASE,
.mdio_div = 0xff,
.channels = 8,
.cpdma_reg_ofs = 0x800,
.slaves = 1,
.slave_data = cpsw_slaves,
.ale_reg_ofs = 0xd00,
.ale_entries = 1024,
.host_port_reg_ofs = 0x108,
.hw_stats_reg_ofs = 0x900,
.bd_ram_ofs = 0x2000,
.mac_control = (1 << 5),
.control = cpsw_control,
.host_port_num = 0,
.version = CPSW_CTRL_VERSION_2,
};
#endif
#if ((defined(CONFIG_SPL_ETH_SUPPORT) || defined(CONFIG_SPL_USBETH_SUPPORT)) &&\
defined(CONFIG_SPL_BUILD)) || \
((defined(CONFIG_DRIVER_TI_CPSW) || \
defined(CONFIG_USB_ETHER) && defined(CONFIG_MUSB_GADGET)) && \
!defined(CONFIG_SPL_BUILD))
static void set_mac_address(int index, uchar mac[6])
{
/* Then take mac from bd */
if (is_valid_ethaddr(mac)) {
eth_setenv_enetaddr_by_index("eth", index, mac);
}
else {
printf("Trying to set invalid MAC address");
}
}
static int read_tja1102(struct mii_dev *bus, int phy_id, int dev_addr, int phy_reg)
{
/* Remove TJA1102 mirror(s) at address 0 from bus */
if (phy_id == 0) {
return -1;
}
/*
* Also report ID registers 2&3 for 2nd PHY in TJA1102
* Take values from 1st PHY (ID 2)
*/
if (phy_id == 3 && (phy_reg == 2 || phy_reg == 3)) {
phy_id = 2;
}
return olddev.read(bus, phy_id, dev_addr, phy_reg);
}
static void register_phy_hook(void)
{
struct mii_dev* dev;
dev = miiphy_get_dev_by_name("cpsw");
if (dev != NULL) {
/* Remember original structure (read pointer) */
memcpy(&olddev, dev, sizeof(olddev));
/* Override read method with SJA1002 wrapper */
dev->read = read_tja1102;
}
}
/* TODO: Update doc */
/*
* This function will:
* Read the eFuse for MAC addresses, and set ethaddr/eth1addr/usbnet_devaddr
* in the environment
* Perform fixups to the PHY present on certain boards. We only need this
* function in:
* - SPL with either CPSW or USB ethernet support
* - Full U-Boot, with either CPSW or USB ethernet
* Build in only these cases to avoid warnings about unused variables
* when we build an SPL that has neither option but full U-Boot will.
*/
int board_eth_init(bd_t *bis)
{
int n = 0;
__maybe_unused uint8_t mac_addr0[6] = {02,00,00,00,00,01};
#if !defined(CONFIG_SPL_BUILD)
#ifdef CONFIG_DRIVER_TI_CPSW
cpsw_data.mdio_div = 0x3E;
bd_get_mac(0, mac_addr0, sizeof(mac_addr0));
set_mac_address(0, mac_addr0);
writel(RMII_MODE_ENABLE | RMII_CHIPCKL_ENABLE, &cdev->miisel);
{
int rv = cpsw_register(&cpsw_data);
if (rv < 0)
{
printf("Error %d registering CPSW switch\n", rv);
} else {
n += rv;
}
}
#endif
#endif
#if defined(CONFIG_USB_ETHER) && \
(!defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_USBETH_SUPPORT))
if (is_valid_ethaddr(mac_addr0)) {
eth_setenv_enetaddr("usbnet_devaddr", mac_addr0);
}
{
int rv = usb_eth_initialize(bis);
if (rv < 0)
{
printf("Error %d registering USB_ETHER\n", rv);
} else {
n += rv;
}
}
#endif
register_phy_hook();
/* Enable BroadR PHYs, set to slave mode */
configure_broadr_phys();
return n;
}
#endif
#endif /* CONFIG_DM_ETH */
#ifdef CONFIG_SPL_LOAD_FIT
int board_fit_config_name_match(const char *name)
{
return 0;
}
#endif
#if defined(CONFIG_OF_BOARD_SETUP) && !defined(CONFIG_SPL_BUILD)
static void ft_enable_node(void* blob, const char* name)
{
int node_ofs = -1;
node_ofs = fdt_path_offset(blob, name);
// printf("ft_enable_node %s -> %d\n", name, node_ofs);
if (node_ofs >= 0) {
fdt_setprop_string(blob, node_ofs, "status", "okay");
}
}
static void ft_disable_node(void* blob, const char* name)
{
int node_ofs = -1;
node_ofs = fdt_path_offset(blob, name);
// printf("ft_disable_node %s -> %d\n", name, node_ofs);
if (node_ofs >= 0) {
fdt_setprop_string(blob, node_ofs, "status", "disabled");
}
}
/*
* Modify the name of a gpio in a gpio-line-names string list.
*/
static void ft_set_gpio_name(void *blob, const char* gpio, int pin, const char* name)
{
int node_ofs = fdt_path_offset(blob, gpio);
int gpios = -1;
const char* text;
int pos = 0;
int i;
char buffer[512];
if (node_ofs < 0) {
printf("Can't find node %s\n", gpio);
goto end;
}
/* get number of IOs in node */
gpios = fdt_getprop_u32_default_node(blob, node_ofs, 0, "ngpios", -1);
if (gpios == -1 || gpios > 64) {
printf("Illegal number of gpios %d\n", gpios);
goto end;
}
/* get string array with names */
const struct fdt_property* prop = fdt_get_property(blob, node_ofs, "gpio-line-names", NULL);
if (prop == NULL) {
goto end;
}
/* modify given name */
for (i=0; i<gpios; i++) {
if (i == pin) {
/* Take provided name if GPIO pin is matched */
text = name;
}
else {
/* Take existing name from string list */
(void)fdt_get_string_index(blob, node_ofs, "gpio-line-names", i, &text);
}
/* Add name to new string list */
if ((pos + strlen(text) + 1) < sizeof(buffer)) {
strncpy(buffer+pos, text, sizeof(buffer)-pos);
pos += strlen(text) + 1;
}
else {
printf("ft_set_gpio_name() Buffer too small\n");
goto end;
}
}
(void)fdt_setprop(blob, node_ofs, "gpio-line-names", buffer, pos);
end: ;
}
static void ft_bootloader_version(void *blob)
{
int node_offset;
static const char version_string[] = U_BOOT_VERSION_STRING;
node_offset = fdt_path_offset(blob, "/");
if (node_offset != -1) {
fdt_setprop_string(blob, node_offset, "nm,bootloader,version", version_string);
}
}
static void ft_hw_info(void *blob)
{
int node_offset;
char hw_version_str[16];
char hw_type_str[8];
snprintf(hw_version_str, sizeof(hw_version_str), "%d.%d.%d", hw_ver, hw_rev, hw_patch);
snprintf(hw_type_str, sizeof(hw_type_str), "%d", hw_type);
node_offset = fdt_path_offset(blob, "/");
if (node_offset != -1) {
fdt_setprop_string(blob, node_offset, "model", hw_variant_name);
fdt_setprop_string(blob, node_offset, "nm,carrierboard,version", hw_version_str);
fdt_setprop_string(blob, node_offset, "nm,carrierboard,type", hw_type_str);
}
}
#ifndef CONFIG_NRSW_BUILD
static void ft_user_module(void *blob)
{
if (um_present()) {
int node_offset;
node_offset = fdt_path_offset(blob, "/user_module/");
if (node_offset != -1) {
const char* model = um_type_as_str();
struct in_addr ip;
struct in_addr mask;
uint8_t ver = 0;
uint8_t rev = 0;
char hw_version[16];
char tmp[22];
um_version(&ver, &rev);
um_network_address(&ip, &mask);
fdt_setprop_string(blob, node_offset, "status", "okay");
fdt_setprop_string(blob, node_offset, "model", model);
snprintf(hw_version, sizeof(hw_version), "%d.%d", ver, rev);
fdt_setprop_string(blob, node_offset, "nm,carrierboard,version", hw_version);
ip_to_string(ip, tmp);
fdt_setprop_string(blob, node_offset, "ipv4-addr", tmp);
ip_to_string(mask, tmp);
fdt_setprop_string(blob, node_offset, "ipv4-mask", tmp);
}
}
}
static void ft_user_interface(void *blob)
{
int ui_hw_version = ui_version();
if (ui_hw_version == 1) {
int node_offset;
node_offset = fdt_path_offset(blob, "ui_v1");
if (node_offset != -1) {
fdt_setprop_string(blob, node_offset, "status", "okay");
}
node_offset = fdt_path_offset(blob, "/leds/led@4/");
if (node_offset != -1) {
fdt_setprop_string(blob, node_offset, "status", "okay");
}
node_offset = fdt_path_offset(blob, "/leds/led@5/");
if (node_offset != -1) {
fdt_setprop_string(blob, node_offset, "status", "okay");
}
node_offset = fdt_path_offset(blob, "/leds/led@6/");
if (node_offset != -1) {
fdt_setprop_string(blob, node_offset, "status", "okay");
}
node_offset = fdt_path_offset(blob, "/leds/led@7/");
if (node_offset != -1) {
fdt_setprop_string(blob, node_offset, "status", "okay");
}
}
else if (ui_hw_version == 2) {
int node_offset;
node_offset = fdt_path_offset(blob, "ui_v2");
if (node_offset != -1) {
fdt_setprop_string(blob, node_offset, "status", "okay");
}
node_offset = fdt_path_offset(blob, "/leds/led@8/");
if (node_offset != -1) {
fdt_setprop_string(blob, node_offset, "status", "okay");
}
node_offset = fdt_path_offset(blob, "/leds/led@9/");
if (node_offset != -1) {
fdt_setprop_string(blob, node_offset, "status", "okay");
}
node_offset = fdt_path_offset(blob, "/leds/led@10/");
if (node_offset != -1) {
fdt_setprop_string(blob, node_offset, "status", "okay");
}
node_offset = fdt_path_offset(blob, "/leds/led@11/");
if (node_offset != -1) {
fdt_setprop_string(blob, node_offset, "status", "okay");
}
}
else {
/* Unknown UI version */
}
}
static void ft_start_event(void *blob, uint32_t reset_reason_shm_location)
{
volatile struct reset_registers* reset_regs = (struct reset_registers*)reset_reason_shm_location;
if (rr_is_start_reason_valid(reset_regs)) {
int node_offset;
node_offset = fdt_path_offset(blob, "/sysstate-start/");
if (node_offset != -1) {
fdt_setprop_u32(blob, node_offset, "start-reason", reset_regs->sr_events);
}
}
}
#endif
static void ft_eth(void *blob)
{
/*
* PHY ID Assignment
*
* broadr0 broadr1
* HW V1.0: 6 7
* HW V2.0: 3 2
*
* DTB defines V2.0 settings. When running on v1.0 hardware, we change the PHY Ids as required.
*/
if (hw_ver == 1) {
int node_offset;
node_offset = fdt_path_offset(blob, "broadr1");
if (node_offset != -1) {
fdt_setprop_u32(blob, node_offset, "<reg>", 7);
fdt_setprop_u32(blob, node_offset, "reg", 7);
}
node_offset = fdt_path_offset(blob, "broadr0");
if (node_offset != -1) {
fdt_setprop_u32(blob, node_offset, "<reg>", 6);
fdt_setprop_u32(blob, node_offset, "reg", 6);
}
}
}
static void ft_uart4(void *blob)
{
/*
* V3.2 HW can feature uart4 as RS232/485 interface.
* TODO: Check product descriptor to see if interface is assembled?
*/
if (is_v32_or_newer()) {
ft_enable_node(blob, "serial4");
}
else {
/* If interface is not present, remove SEL_RS232_RS485n name from gpio0_8 */
ft_set_gpio_name(blob, "gpio0", 8, "");
}
}
static void ft_led(void *blob)
{
/*
* V3.2 HW has LED0 Green at GPIO1_23 instead of 0_30
* Link from SysState-LED Driver also needs to be adapted
*/
if (is_v32_or_newer()) {
ft_disable_node(blob, "status_led");
ft_disable_node(blob, "/sysstate-led");
ft_enable_node(blob, "status_led_v32");
ft_enable_node(blob, "/sysstate-led-v32");
}
}
int ft_board_setup(void *blob, bd_t *bd)
{
ft_bootloader_version(blob);
ft_hw_info(blob);
#ifndef CONFIG_NRSW_BUILD
ft_user_interface(blob);
ft_user_module(blob);
#endif
ft_eth(blob);
ft_uart4(blob);
ft_led(blob);
ft_start_event(blob, RESET_REASON_SHM_LOCATION);
return 0;
}
#endif /* defined(CONFIG_OF_BOARD_SETUP) && !defined(CONFIG_SPL_BUILD) */
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