After cold reset is introduced, the phone is cold reset instead of
warm reset, such as panic. In this case, the power up reason saved
in shared memory will be lost. Consequently, the power up reason on
next boot up time will be normal boot instead of correct ones. To
resolve this issue, we can use the two spared pmic registers which
are power lost safe to save the restart reason for these cases.
Motorola definition of AP panic bit set in extra info pmic reg
conflicts with QC definition of Warm reboot bit set in extra info reg
move Mot bit to available position to avoid conflict
Force a cold reboot for the command "adb reboot bootloader"
to avoid the warm boot when user tries to continue boot from boot menu.
For early kernel panic before PMIC is initialized, the function
qpnp_pon_store_extra_reset_info will fail. Need to set IMEM flag
for fail safe in this case.
For post-panic, post-wdt, post-pmicwdt reboot, we do cold reset.
And set the PMIC register accordingly, to nofity BL the special
reboot behavior.
Configure panic as warm restart, so that we have chance to get panic logs.
According to SR 01277290, 0x88D and 0x88E are spare registers for PMIC
where we could store oem specific reset information
Ported from: https://gerrit.mot.com/1446282
Change-Id: I6704c801435c6586dbe64259c214dcdc926b07cf
Signed-off-by: zhaoxp3 <zhaoxp3@motorola.com>
Reviewed-on: https://gerrit.mot.com/1499584
SLTApproved: Slta Waiver
SME-Granted: SME Approvals Granted
Tested-by: Jira Key
Reviewed-by: Wang Wang <wangwang1@lenovo.com>
Submit-Approved: Jira Key
zhaoxp3
d177ede646