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power_mgmt: Do not notify deep sleep if bootloader does context restore

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Some bootloaders have power management support to restoer context
upon resume from deep sleep. In such cases, the OS startup code
should call the notification hook. Create Kconfig flags to configure
this option.

Jira: 1257
Change-Id: I9f40c5fa077c2f17dc8e9f11604c3ed17e549ed5
Signed-off-by: Ramesh Thomas <ramesh.thomas@intel.com>
This commit is contained in:
Ramesh Thomas 2016-11-09 23:16:27 -08:00 • committed by Anas Nashif
commit a3dc53f2a6
4 changed files with 22 additions and 1 deletions
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9
arch/Kconfig
View file

@ -58,6 +58,15 @@ config SYS_POWER_DEEP_SLEEP_SUPPORTED
help
This option signifies that the target supports the SYS_POWER_DEEP_SLEEP
configuration option.
config BOOTLOADER_CONTEXT_RESTORE_SUPPORTED
# Hidden
bool
default n
help
This option signifies that the target has options of bootloaders
that support context restore upon resume from deep sleep
#
# End hidden PM feature configs
#

3
arch/x86/core/crt0.S
View file

@ -200,7 +200,8 @@ __csSet:
movl $_interrupt_stack, %esp
addl $CONFIG_ISR_STACK_SIZE, %esp
#ifdef CONFIG_SYS_POWER_DEEP_SLEEP
#if defined(CONFIG_SYS_POWER_DEEP_SLEEP) && \
!defined(CONFIG_BOOTLOADER_CONTEXT_RESTORE)
/*
* Invoke _sys_soc_resume_from_deep_sleep() hook to handle resume from
* deep sleep. It should first check whether system is recovering from

1
arch/x86/soc/intel_quark/quark_se/Kconfig.series
View file

@ -23,6 +23,7 @@ config SOC_SERIES_QUARK_SE
select XIP
select SYS_POWER_LOW_POWER_STATE_SUPPORTED
select SYS_POWER_DEEP_SLEEP_SUPPORTED
select BOOTLOADER_CONTEXT_RESTORE_SUPPORTED
select HAS_QMSI
help
Enable support for Quark SE

10
misc/Kconfig
View file

@ -397,6 +397,16 @@ config BOOTLOADER_UNKNOWN
at build time which method is to be used. When this option is enabled
the board may have to do extra work to ensure a proper startup.
config BOOTLOADER_CONTEXT_RESTORE
bool
prompt "Boot loader has context restore support"
default y
depends on SYS_POWER_DEEP_SLEEP && BOOTLOADER_CONTEXT_RESTORE_SUPPORTED
help
This option signifies that the target has a bootloader
that restores CPU context upon resuming from deep sleep
power state.
config REBOOT
bool "Reboot functionality"
default n