92 lines
3 KiB
C++
92 lines
3 KiB
C++
/*
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Copyright (c) 2016, The CyanogenMod Project
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are
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met:
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* Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above
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copyright notice, this list of conditions and the following
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disclaimer in the documentation and/or other materials provided
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with the distribution.
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* Neither the name of The Linux Foundation nor the names of its
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contributors may be used to endorse or promote products derived
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from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
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WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
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ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
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BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
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OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
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IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <fcntl.h>
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#include <stdlib.h>
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#include "vendor_init.h"
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#include "property_service.h"
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#include "log.h"
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#include "util.h"
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static int read_file2(const char *fname, char *data, int max_size)
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{
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int fd, rc;
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if (max_size < 1)
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return 0;
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fd = open(fname, O_RDONLY);
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if (fd < 0) {
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ERROR("failed to open '%s'\n", fname);
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return 0;
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}
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rc = read(fd, data, max_size - 1);
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if ((rc > 0) && (rc < max_size))
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data[rc] = '\0';
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else
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data[0] = '\0';
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close(fd);
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return 1;
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}
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static void init_alarm_boot_properties()
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{
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char const *alarm_file = "/proc/sys/kernel/boot_reason";
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char buf[64];
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if (read_file2(alarm_file, buf, sizeof(buf))) {
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/*
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* Setup ro.alarm_boot value to true when it is RTC triggered boot up
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* For existing PMIC chips, the following mapping applies
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* for the value of boot_reason:
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*
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* 0 -> unknown
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* 1 -> hard reset
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* 2 -> sudden momentary power loss (SMPL)
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* 3 -> real time clock (RTC)
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* 4 -> DC charger inserted
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* 5 -> USB charger insertd
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* 6 -> PON1 pin toggled (for secondary PMICs)
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* 7 -> CBLPWR_N pin toggled (for external power supply)
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* 8 -> KPDPWR_N pin toggled (power key pressed)
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*/
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if (buf[0] == '3')
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property_set("ro.alarm_boot", "true");
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else
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property_set("ro.alarm_boot", "false");
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}
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}
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void vendor_load_properties()
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{
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init_alarm_boot_properties();
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}
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