arm-trusted-firmware/plat/nxp/common/warm_reset/warm_reset.mk
Pankaj Gupta 0f33f50e21 nxp: warm reset support to retain ddr content
NXP: Added warm reset handler to handle SMC PSCI_SYSTEM_RESET2
raised from kernel (> 5.4).

As part of first cold boot, DDR training data is stored in NV storage.

As part of this SMC handling, following things are done:
- DDR is put in self-refresh mode to retain the content of DDR.
- Reset cause is saved.
- Reset is triggered.

On next boot to last warm-reset, DDR training is restored from
the NV storage.

Signed-off-by: Ashish Kumar <ashish.kumar@nxp.com>
Signed-off-by: Kuldeep Singh <kuldeep.singh@nxp.com>
Signed-off-by: Udit Agarwal <udit.agarwal@nxp.com>
Signed-off-by: Priyanka Singh <priyanka.singh@nxp.com>
Signed-off-by: Pankaj Gupta <pankaj.gupta@nxp.com>
Change-Id: I8e4fb0824887af49e959c93825e2ab0ba887fc9d
2021-03-24 09:49:32 +05:30

21 lines
482 B
Makefile

#
# Copyright 2020 NXP
#
# SPDX-License-Identifier: BSD-3-Clause
#
#-----------------------------------------------------------------------------
ifeq (${WARM_RST_ADDED},)
WARM_RST_ADDED := 1
NXP_NV_SW_MAINT_LAST_EXEC_DATA := yes
$(eval $(call add_define,NXP_WARM_BOOT))
WARM_RST_INCLUDES += -I${PLAT_COMMON_PATH}/warm_reset
WARM_RST_BL31_SOURCES += ${PLAT_SOC_PATH}/$(ARCH)/${SOC}_warm_rst.S
WARM_RST_BL_COMM_SOURCES += ${PLAT_COMMON_PATH}/warm_reset/plat_warm_reset.c
endif