Add detection logic in hw21/26
(cherry picked from commit 0399dda8341c062a7a374152bfe255219c5db441)
This commit is contained in:
Rene Straub
Marcel Reichmuth
parent
d1c5c9c1e9
commit
f86ddfdff0
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@ -37,6 +37,7 @@
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#include "../common/bdparser.h"
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#include "../common/board_descriptor.h"
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#include "../common/da9063.h"
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#include "../common/ether_crc.h"
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#include "board.h"
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#include "sja1105.h"
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#include "ui.h"
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@ -475,60 +476,142 @@ static void init_pmic_spl(void)
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da9063_release_i2c_bus(bus);
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}
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struct reset_registers {
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uint32_t value;
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uint32_t value_crc;
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/* Reboot Reasons, set by OS, expect watchdog set by bootloader */
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uint32_t rr_value;
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uint32_t rr_value_crc;
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/* Start Events */
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uint32_t se_magic; /* Token to check presence of following fields */
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uint32_t se_events; /* Events bitmask, see SE_... defines */
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uint32_t se_checksum; /* Checksum over se_events */
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};
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#ifdef CONFIG_NRSW_BUILD
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/* Watchdog reboot reason event */
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#define RR_EXTERNAL_WATCHDOG_PATTERN 0x781f9ce2
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static uint32_t ether_crc(size_t len, uint8_t const *p)
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/* Start event token 'SRTE' */
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#define SE_MAGIC 0x53525445
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/* Possible start events (see se_events) */
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#define SE_POR 0x00000001
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#define SE_WATCHDOG 0x00000010
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#define SE_IGNITION 0x00000100
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#define SE_RTC_ALARM 0x00000200
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static void print_start_reason(uint32_t events)
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{
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uint32_t crc;
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unsigned i;
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puts("Start Events: ");
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crc = ~0;
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while (len--) {
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crc ^= *p++;
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for (i = 0; i < 8; i++)
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crc = (crc >> 1) ^ ((crc & 1) ? 0xedb88320 : 0);
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if (events == 0) {
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puts("-\n");
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}
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else {
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static char buffer[10+11+11+6+1];
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/* an reverse the bits, cuz of way they arrive -- last-first */
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crc = (crc >> 16) | (crc << 16);
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crc = (crc >> 8 & 0x00ff00ff) | (crc << 8 & 0xff00ff00);
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crc = (crc >> 4 & 0x0f0f0f0f) | (crc << 4 & 0xf0f0f0f0);
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crc = (crc >> 2 & 0x33333333) | (crc << 2 & 0xcccccccc);
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crc = (crc >> 1 & 0x55555555) | (crc << 1 & 0xaaaaaaaa);
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buffer[0] = 0;
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if (events & SE_POR)
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strncat(buffer, "PowerOn, ", sizeof(buffer));
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if (events & SE_WATCHDOG)
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strncat(buffer, "Watchdog, ", sizeof(buffer));
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if (events & SE_IGNITION)
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strncat(buffer, "Ignition, ", sizeof(buffer));
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if (events & SE_RTC_ALARM)
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strncat(buffer, "RTC, ", sizeof(buffer));
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return crc;
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/* Trim last comma, no 0 len check required, at least one entry is present */
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buffer[strlen(buffer)-2] = 0;
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printf("%s\n", buffer);
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}
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}
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void check_pmic_reset_reason(unsigned int reset_reason_shm_location)
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static void check_pmic_reset_reason(unsigned int reset_reason_shm_location)
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{
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volatile struct reset_registers* reset_regs = (struct reset_registers*)reset_reason_shm_location;
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uint32_t start_event = 0;
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uint8_t state = 0x00;
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int bus;
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int ret;
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bus = da9063_claim_i2c_bus();
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/*
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* Check/write boot marker to GP_ID_0
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* If this marker is not present, we have a power on reset
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*/
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ret = da9063_get_reg(PMIC_GP_ID_0, &state);
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if ((ret == 0) && (state != 0xC5)) {
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start_event |= SE_POR;
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(void)da9063_set_reg(PMIC_GP_ID_0, 0xC5);
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}
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/*
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* Check Fault Log register for
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* - Power On Reset: No Power, RTC Delivery -> requires removal of RTC battery
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* - Watchdog
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*/
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ret = da9063_get_reg(PMIC_REG_FAULT_LOG, &state);
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if ((ret == 0) && (state != 0)) {
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// PMIC Watchdog
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if (state & PMIC_FAULT_TWD_ERROR_MASK) {
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reset_regs->value = EXTERNAL_WATCHDOG_PATTERN;
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reset_regs->value_crc = ether_crc(sizeof(reset_regs->value),
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(const uint8_t*)&(reset_regs->value));
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start_event |= SE_WATCHDOG;
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reset_regs->rr_value = RR_EXTERNAL_WATCHDOG_PATTERN;
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reset_regs->rr_value_crc = ether_crc(sizeof(reset_regs->rr_value),
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(const uint8_t*)&(reset_regs->rr_value));
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}
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// PMIC Power On Reset (only when RTC battery is removed)
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if (state & PMIC_FAULT_POR_MASK) {
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start_event |= SE_POR;
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}
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/* clear pmic fault log by writing back all bits currently set */
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da9063_set_reg(PMIC_REG_FAULT_LOG, state);
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(void)da9063_set_reg(PMIC_REG_FAULT_LOG, state);
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}
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da9063_release_i2c_bus(bus);
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}
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/*
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* Event Register A
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* - Event B Activity
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* - RTC Alarm
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*/
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ret = da9063_get_reg(PMIC_REG_EVENT_A, &state);
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if ((ret == 0) && (state != 0)) {
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(void)da9063_set_reg(PMIC_REG_EVENT_A, state);
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#endif
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if (state & PMIC_REG_EVENT_RTC_ALARM_MASK) {
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start_event |= SE_RTC_ALARM;
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}
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if (state & PMIC_REG_EVENT_EVENTS_B_MASK) {
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/*
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* Event Register B
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* - COMP 1V2: Ignition
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*/
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ret = da9063_get_reg(PMIC_REG_EVENT_B, &state);
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if ((ret == 0) && (state != 0)) {
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(void)da9063_set_reg(PMIC_REG_EVENT_B, state);
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if (state & PMIC_REG_EVENT_COMP1V2_MASK) {
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start_event |= SE_IGNITION;
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}
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}
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}
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}
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/* Store start events in shared memory region for OS */
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reset_regs->se_magic = SE_MAGIC;
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reset_regs->se_events = start_event;
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reset_regs->se_checksum = 0;
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reset_regs->se_checksum = ether_crc(sizeof(reset_regs->se_events),
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(const uint8_t*)&(reset_regs->se_events));
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da9063_release_i2c_bus(bus);
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print_start_reason(reset_regs->se_events);
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}
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static void init_bd_spl(void)
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{
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