For this configuration, the watchdog (iwdg1) is secured and managed by
OP-TEE. Add an watchdog node with arm,smc-wdt compatible, and disable
iwdg2 node which is then no more used.

Signed-off-by: Yann Gautier <yann.gautier@foss.st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>

Add support for building U-Boot for Cortex-M33 RSIP core in Renesas
R-Car Gen5 R8A78000 X5H SoC. The main goal is to start U-Boot on the
Cortex-M33 RSIP core, which initializes the hardware and then starts
the Cortex-M33 SCP and Cortex-A720 cores which run the SCP firmware
and applications software respectively. The SCP is responsible for
platform resource management, and is used to start other CPU cores.

The Cortex-M33 build contains its own r8a78000_ironhide_cm33_defconfig
which configures the build for aarch32 instruction set compatible with
the ARMv8M core. The build also uses -cm33 DT and -u-boot.dtsi which
are derived from their non-CM33 counterparts, and add CM33 specifics.

The arch/arm/mach-renesas/u-boot-rsip.lds is derived from generic
arch/arm/cpu/u-boot.lds with adjustments to cater to the RSIP core,
those are entrypoint before vectors, __data_start/__data_end symbols
for data-only relocation, and placement of BSS into read-write SRAM
area.

Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>

Point every direct user of SCMI clock protocol at CPG node instead
of SCMI clock protocol node. Point every direct user of SCMI reset
and power domain protocol at a matching newly introduced MDLC node
instead of the SCMI reset and power domain protocol nodes.

This allows the CPG and MDLC remap drivers bound to CPG node and MDLC
nodes to remap between DT clock, reset and power domain IDs and SCMI
clock, reset and power domain IDs. This makes U-Boot on R-Car X5H
compatible with multiple SCP firmware versions. Currently supported
versions of SCP firmware are 4.28, 4.31 and 4.32.

Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>

Use macro SCP_CLOCK_ID_CLK_S0D6_PERE_MAIN for SCMI clock 1691
instead of hardcoding the number in DT. No functional change.

Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>

Enable OF_UPSTREAM to use upstream Linux kernel DT source as a base
for U-Boot control DT. Retain currently present parts of the DT which
are not yet part of upstream Linux kernel DT in -u-boot.dtsi files
until they get replaced by upstream equivalents. Add renesas/ prefix
to the DEFAULT_DEVICE_TREE as part of the switch.

Unused i2c2..i2c8 nodes have been removed, and will become available
once upstream Linux kernel DT adds those nodes.

The DRAM_RSV_SIZE has been updated to cover first 518 MiB of DRAM,
which are reserved for firmware and other use.

Note that all DT parts in -u-boot.dtsi are not considered stable DT
bindings and may change before they land in Linux kernel and become
stable DT ABI.

Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>

The combined boot firmware firmware-aquila-am69-gp.bin depends on
tiboot3-am69-gp-aquila.bin, which in turn requires the GP variant
of the TI system firmware blob (ti-fs-firmware-j784s4-gp.bin).

Fix the combined boot firmware image build by adding the missing binman
nodes.

Fixes: f62d4535cf17 ("arm: dts: k3-am69-aquila: add combined boot firmware image")
Signed-off-by: Emanuele Ghidoli <emanuele.ghidoli@toradex.com>
Reviewed-by: Francesco Dolcini <francesco.dolcini@toradex.com>
Reviewed-by: Neha Malcom Francis <n-francis@ti.com>

Janne Grunau <j@jannau.net> says:

The Linux device trees for Apple silicon devices cover now most of the
hardware as u-boot's internal device trees for M1 devices. Linux has in
addition device trees M2 and M1 and M2 Pro/Max/Ultra devices which were
never added in u-boot.
The most common use case for u-boot on Apple silicon devices does not
use DTBs from u-boot but passes runtime modified device trees from an
earlier boot loader (m1n1).
This change regresses support for the SPI on M1 and M1 Pro/Max notebooks
as SPI keyboard support is not in upstream Linux. This regression is in
my opinion acceptable due to the limited use of u-boot's DTBs for these
targets.

Link: https://lore.kernel.org/r/20260507-apple-dt-upstream-v2-0-35181f2b0509@jannau.net

The device tree on Apple silicon devices is passed from a previous
bootloader stage. The bootloader fills in dynamic information so
u-boot can not use its own device tree.
As documented in doc/board/apple/m1.rst it is possible to build boot
bundles (bootloader + device tree + gzipped u-boot binary). These are
useful for testing.
Instead of using u-boot's own device trees for M1 (t8103) devices use
upstream device trees from dts/upstream/src/arm64/apple. The u-boot
device trees have not seen updates since 2022. The upstream linux device
trees have feature parity for the M1 devices. In addition linux has
device trees for M1 Pro/Max/Ultra, M2 and M2 Pro/Max/Ultra devices.
Keep t8103-j274 as default device tree to avoid further updates.

Signed-off-by: Janne Grunau <j@jannau.net>
Acked-by: Mark Kettenis <kettenis@openbsd.org>

Add nodes to the binman configuration to create single binaries that
combine tiboot3-am69-*-aquila.bin, tispl.bin and u-boot.img into
firmware-aquila-am69-*.bin, with the proper offsets.

These binaries can be used to flash U-Boot via a single binary of three,
as it is done now.

Signed-off-by: Ernest Van Hoecke <ernest.vanhoecke@toradex.com>
Reviewed-by: Neha Malcom Francis <n-francis@ti.com>
Acked-by: Francesco Dolcini <francesco.dolcini@toradex.com>

This board has been migrated to the upstream / kernel
device tree version (OF_UPSTREAM), so remove the
old 'local' copies that are no longer required.

However, the -u-boot.dtsi append needs to remain,
because the SoC fsl-ls1088a-u-boot.dtsi is required
for some devices (like PCIe controllers and DPAA2 ethernet)
to properly enumerate under U-Boot.

Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Mathew McBride <matt@traverse.com.au>
Signed-off-by: Peng Fan <peng.fan@nxp.com>