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view src/cs/services/fcbm/fcbm_reset_mode.c @ 268:f2e52cab0a73

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abb_inth.c: check all interrupt causes, not just one The original code used if - else if - else if etc constructs, thus the first detected interrupt was the only one handled. However, Iota ITSTATREG is a clear-on-read register, thus if we only handle the first detected interrupt and skip checking the others, then the other interrupts will be lost, if more than one interrupt happened to occur in one ABB interrupt handling cycle - a form of rare race condition. Change the code to check all interrupts that were read in this cycle.
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 13 Jun 2021 18:17:53 +0000
parents a5b00817a60f
children
line wrap: on
line source

/*
 * In this module we are going to implement FCBM functions
 * for the reset or miscellaneous boot mode.
 */

#include "rv/rv_general.h"
#include "rvf/rvf_api.h"
#include "rvm/rvm_use_id_list.h"
#include "fcbm/fcbm_func_i.h"
#include "fcbm/fcbm_life_cycle.h"
#include "fcbm/fcbm_timer_i.h"
#include "r2d/r2d.h"
#include "r2d/r2d_blrr_api.h"

extern char fcbm_prod_banner_string[];

void fcbm_process_msg_reset_mode(void)
{
	if (fcbm_life_cycle_state != FCBM_STATE_INACTIVE) {
		rvf_send_trace("FCBM got reset mode request in wrong state",
				42, fcbm_life_cycle_state,
				RV_TRACE_LEVEL_ERROR, FCBM_USE_ID);
		return;
	}
	rvf_send_trace("Entering reset boot mode", 24, NULL_PARAM,
			RV_TRACE_LEVEL_DEBUG_HIGH, FCBM_USE_ID);
	fcbm_subscribe_kpd();
	fcbm_display_init();
	fcbm_display_line(0, fcbm_prod_banner_string);
	fcbm_display_line(1, "Misc boot state");
#ifdef LSCREEN
	fcbm_display_line(3, "Long-press Power");
	fcbm_display_line(4, "button to turn off,");
#else
	fcbm_display_line(3, "Long-press PWR");
	fcbm_display_line(4, "button to OFF,");
#endif
	fcbm_display_line(5, "or send fc-tmsh");
	fcbm_display_line(6, "phone-on command");
	fcbm_display_line(7, "to boot phone.");
	r2d_flush();
	blrr_display_ctrl(BLRR_DISPLAY_CHG_BOOT);
	rvf_start_timer(FCBM_TIMER_DSPL_OFF,
			RVF_SECS_TO_TICKS(FCBM_DISPLAY_SECS), FALSE);
	fcbm_life_cycle_state = FCBM_STATE_ACTIVE;
}