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arm64: dts: fvp: Reserve 64MB for the FF-A firmware in memory map

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Reserve 64MB of memory at the end of the first bank of DRAM on FVP model.
This is mainly for FF-A firmware use, as required by various firmware
configurations using the Firmware Framework for Arm (FF-A). This prevents
the kernel from overwriting the firmware region.

This is also useful when running other firmware configurations(non FF-A
based) that rely on usage of 64MB at the end of first DRAM bank.

Necessary for proper coexistence of firmware(FF-A partitions) and the OS.

Message-Id: <20250509154640.836093-3-sudeep.holla@arm.com>
Reviewed-by: Liviu Dudau <liviu.dudau@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
This commit is contained in:
Sudeep Holla 2025-05-09 16:46:40 +01:00
parent 44845ea83d
commit bbb59b3614
1 changed files with 1 additions and 1 deletions
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2
arch/arm64/boot/dts/arm/fvp-base-revc.dts
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@ -201,7 +201,7 @@ C1_L2: l2-cache1 {
memory@80000000 {
device_type = "memory";
reg = <0x00000000 0x80000000 0 0x80000000>,
reg = <0x00000000 0x80000000 0 0x7c000000>,
<0x00000008 0x80000000 0 0x80000000>;
};