Messages in this thread Patch in this message | | | From | Neil Armstrong <> | Subject | [PATCH] ARM64: dts: meson-gxl: Add alternate ARM Trusted Firmware reserved memory zone | Date | Wed, 11 Oct 2017 17:23:12 +0200 |
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This year, Amlogic updated the ARM Trusted Firmware reserved memory mapping for Meson GXL SoCs and products sold since May 2017 uses this alternate reserved memory mapping. But products had been sold using the previous mapping.
This issue has been explained in [1] and a dynamic solution is yet to be found to avoid loosing another 3Mbytes of reservable memory.
In the meantime, this patch adds this alternate memory zone only for the GXL and GXM SoCs since GXBB based new products stopped earlier.
[1] http://lists.infradead.org/pipermail/linux-amlogic/2017-October/004860.html
Fixes: bba8e3f42736 ("ARM64: dts: meson-gx: Add firmware reserved memory zones") Reported-by: Jerome Brunet <jbrunet@baylibre.com> Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> --- arch/arm64/boot/dts/amlogic/meson-gxl.dtsi | 8 ++++++++ 1 file changed, 8 insertions(+)
diff --git a/arch/arm64/boot/dts/amlogic/meson-gxl.dtsi b/arch/arm64/boot/dts/amlogic/meson-gxl.dtsi index d8dd329..fb8d76a 100644 --- a/arch/arm64/boot/dts/amlogic/meson-gxl.dtsi +++ b/arch/arm64/boot/dts/amlogic/meson-gxl.dtsi @@ -49,6 +49,14 @@ / { compatible = "amlogic,meson-gxl"; + + reserved-memory { + /* Alternate 3 MiB reserved for ARM Trusted Firmware (BL31) */ + secmon_reserved_alt: secmon@05000000 { + reg = <0x0 0x05000000 0x0 0x300000>; + no-map; + }; + }; }; ðmac { -- 2.7.4
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