[RFT PATCH] ARM64: dts: meson-gxbb: Add reserved memory zone and usable memory range
From: Heinrich Schuchardt <hidden>
Date: 2016-12-12 21:23:58
Also in:
linux-amlogic, linux-devicetree, lkml
On 12/12/2016 11:18 AM, Neil Armstrong wrote:
quoted hunk ↗ jump to hunk
The Amlogic Meson GXBB secure monitor uses part of the memory space, this patch adds these reserved zones and redefines the usable memory range for each boards. Signed-off-by: Neil Armstrong <redacted> --- arch/arm64/boot/dts/amlogic/meson-gx-p23x-q20x.dtsi | 2 +- arch/arm64/boot/dts/amlogic/meson-gx.dtsi | 21 +++++++++++++++++++++ .../boot/dts/amlogic/meson-gxbb-nexbox-a95x.dts | 2 +- arch/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts | 2 +- arch/arm64/boot/dts/amlogic/meson-gxbb-p20x.dtsi | 2 +- .../boot/dts/amlogic/meson-gxbb-vega-s95-meta.dts | 2 +- .../boot/dts/amlogic/meson-gxbb-vega-s95-pro.dts | 2 +- .../boot/dts/amlogic/meson-gxbb-vega-s95-telos.dts | 2 +- .../boot/dts/amlogic/meson-gxl-nexbox-a95x.dts | 2 +- .../arm64/boot/dts/amlogic/meson-gxl-s905x-p212.dts | 2 +- arch/arm64/boot/dts/amlogic/meson-gxm-nexbox-a1.dts | 2 +- 11 files changed, 31 insertions(+), 10 deletions(-)diff --git a/arch/arm64/boot/dts/amlogic/meson-gx-p23x-q20x.dtsi b/arch/arm64/boot/dts/amlogic/meson-gx-p23x-q20x.dtsi index 7a078be..ac40b2d 100644 --- a/arch/arm64/boot/dts/amlogic/meson-gx-p23x-q20x.dtsi +++ b/arch/arm64/boot/dts/amlogic/meson-gx-p23x-q20x.dtsi@@ -56,7 +56,7 @@ memory at 0 { device_type = "memory"; - reg = <0x0 0x0 0x0 0x80000000>; + reg = <0x0 0x1000000 0x0 0x7f000000>; }; vddio_boot: regulator-vddio_boot {diff --git a/arch/arm64/boot/dts/amlogic/meson-gx.dtsi b/arch/arm64/boot/dts/amlogic/meson-gx.dtsi index fc033c0..e085588 100644 --- a/arch/arm64/boot/dts/amlogic/meson-gx.dtsi +++ b/arch/arm64/boot/dts/amlogic/meson-gx.dtsi@@ -55,6 +55,27 @@ #address-cells = <2>; #size-cells = <2>; + reserved-memory { + #address-cells = <2>; + #size-cells = <2>; + ranges; + + secos: secos { + reg = <0x0 0x05300000 0x0 0x2000000>; + no-map; + };
Hello Neil, In https://github.com/hardkernel/linux/blob/odroidc2-3.14.y/arch/arm64/boot/dts/meson64_odroidc2.dts the secos region does not exist. In linux-next I find no reference to the secos label. Where is the consumer of the region defined?
+
+ pstore: pstore {
+ reg = <0x0 0x07300000 0x0 0x100000>;
+ no-map;
+ };In https://github.com/hardkernel/linux/blob/odroidc2-3.14.y/arch/arm64/boot/dts/amlogic/gxbb_skt.dts and other files pstore uses a different position (reg = <0x0 0x20000000 0x0 0x100000>;). Why are we moving this? Should this region be marked compatible = "ramoops"; ? Cf. Documentation/devicetree/bindings/reserved-memory/ramoops.txt. It would be nice if you could add a short description of each reserved area to the commit message. Regards Heinrich Schuchardt
+
+ secmon: secmon {
+ reg = <0x0 0x10000000 0x0 0x200000>;
+ no-map;
+ };
+ };
+
cpus {
#address-cells = <0x2>;
#size-cells = <0x0>;