[PATCH 0/5] add support for hs bootflows to am62a

Bryan Brattlof
2022-12-24T01:16:34Z

Hello everyone!

Texas Instruments has started to enable security settings inside all the
boot ROM and TIFS firmware in all of their SoCs. One of the few changes
this brings is ROM and TIFS will now begin protecting the RAM regions
they're using with firewalls.

This means the wakeup domain's SPL will need to move the stack and heap
to HSM RAM to ensure it stays within its allotted memory regions as well
as move the needed boot information to the main domain's bootloaders that
will no longer have access to HSM RAM.

We will also need to edit the bootcmd to pull in the kernel and dtb's
fitImage if uboot is enforcing the high security bootflow. While we're
editing this bootcmd, we can also take the opportunity to convert it to
a distro_bootcmd macro.

Thanks for reviewing!
~Bryan

Bryan Brattlof (5):
configs: restrict am62ax wakup SPL size
configs: am62a: move stack and heap to HSM RAM
arm: mach-k3: copy bootindex to OCRAM for main domain SPL
configs: am62a: convert bootcmd to distro_bootcmd
configs: am62a: use kernel fitImage when using secure bootflow

arch/arm/mach-k3/Kconfig | 4 ++-
arch/arm/mach-k3/am62a7_init.c | 16 +++++++--
.../arm/mach-k3/include/mach/am62a_hardware.h | 17 +++++++++-
configs/am62ax_evm_a53_defconfig | 1 -
configs/am62ax_evm_r5_defconfig | 15 +++++---
include/configs/am62ax_evm.h | 34 +++++++++++++++++--
6 files changed, 74 insertions(+), 13 deletions(-)

base-commit: 52d91e1c20b399ddab276e2c03e5788ed5e5fdd2
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2.39.0