This series is the U-Boot part of the work to add the suspend to RAM
support for the K3 J7200 EVM board.
During the boot R5 SPL makes a copy of DM-Firmware in memory.
Resume detection is done by reading a magic value in a pmic register
(set by DM-Firmware).
If a resume is detected, R5 SPL run the exit retention sequence of the
DDR. Then it restores TF-A in SRAM (it saved itself to DDR), and load
DM-Firmware using the copy done during the boot (fit image processing
is skipped).
The copy of TF-A/DM-Firmware, the SPL stack and malloc are located in a
reserved memory region (for the kernel point of view) to avoid any
memory corruption.
A test_enter_sleep command was implemented to be able to test the
suspend sequence from U-Boot. It is only for test, the resume will not
work.
Gowtham Tammana (1):
DO NOT MERGE: arm: dts: k3-j7200-r5-common: Add pmic node for esm
Gregory CLEMENT (3):
configs: j7200_evm_r5: Used reserved memory in DDR for stack
configs: j7200_evm_r5: Move address used for allocation in the
reserved space
cmd: test_enter_suspend: Add test_enter_suspend command
Thomas Richard (5):
board: ti: j721e: Add resume detection for J7200
ram: k3-ddrss: Add exit retention support
board: ti: j721e: Add the missing part of exit retention for k3-ddrss
(J7200)
board: ti: j721e: During resume spl restores TF-A and DM-Firmware
arm: mach-k3: j7200: Skip fit processing when resuming
.../arm/dts/k3-j7200-r5-common-proc-board.dts | 17 +-
arch/arm/mach-k3/common.c | 37 ++-
arch/arm/mach-k3/include/mach/j721e_spl.h | 29 ++
arch/arm/mach-k3/sysfw-loader.c | 16 +-
board/ti/j721e/evm.c | 79 +++++
cmd/Kconfig | 7 +
cmd/boot.c | 8 +
configs/j7200_evm_r5_defconfig | 4 +-
drivers/firmware/psci.c | 23 ++
drivers/ram/k3-ddrss/k3-ddrss.c | 302 ++++++++++++++++++
include/command.h | 2 +
11 files changed, 514 insertions(+), 10 deletions(-)
--
2.39.2
