[PATCH v4] ARM64: dts: meson-gx: Add reserved memory zone and usable memory range

From: Neil Armstrong
Date: Wed Jan 11 2017 - 05:10:28 EST

The Amlogic Meson GXBB/GXL/GXM secure monitor uses part of the memory space,
this patch adds this reserved zone and redefines the usable memory range.

The memory node is also moved from the dtsi files into the proper dts files
to handle variants memory sizes.

This patch also fixes the memory sizes for the following platforms :
- gxl-s905x-p212 : 1GiB instead of 2GiB, a proper 2GiB dts should be pushed
- gxm-s912-q201 : 1GiB instead of 2GiB, a proper 2GiB dts should be pushed
- gxl-s905d-p231 : 1GiB instead of 2GiB, a proper 2GiB dts should be pushed
- gxl-nexbox-a95x : 1GiB instead of 2GiB, a proper 2GiB dts should be pushed

Signed-off-by: Neil Armstrong <narmstrong@xxxxxxxxxxxx>
---
arch/arm64/boot/dts/amlogic/meson-gx-p23x-q20x.dtsi | 5 -----
arch/arm64/boot/dts/amlogic/meson-gx.dtsi | 12 ++++++++++++
arch/arm64/boot/dts/amlogic/meson-gxbb-nexbox-a95x.dts | 6 +++++-
arch/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts | 6 +++++-
arch/arm64/boot/dts/amlogic/meson-gxbb-p200.dts | 9 +++++++++
arch/arm64/boot/dts/amlogic/meson-gxbb-p201.dts | 9 +++++++++
arch/arm64/boot/dts/amlogic/meson-gxbb-p20x.dtsi | 5 -----
arch/arm64/boot/dts/amlogic/meson-gxbb-vega-s95-meta.dts | 6 +++++-
arch/arm64/boot/dts/amlogic/meson-gxbb-vega-s95-pro.dts | 6 +++++-
arch/arm64/boot/dts/amlogic/meson-gxbb-vega-s95-telos.dts | 6 +++++-
arch/arm64/boot/dts/amlogic/meson-gxl-nexbox-a95x.dts | 6 +++++-
arch/arm64/boot/dts/amlogic/meson-gxl-s905d-p230.dts | 9 +++++++++
arch/arm64/boot/dts/amlogic/meson-gxl-s905d-p231.dts | 9 +++++++++
arch/arm64/boot/dts/amlogic/meson-gxl-s905x-p212.dts | 6 +++++-
arch/arm64/boot/dts/amlogic/meson-gxm-nexbox-a1.dts | 6 +++++-
arch/arm64/boot/dts/amlogic/meson-gxm-s912-q200.dts | 9 +++++++++
arch/arm64/boot/dts/amlogic/meson-gxm-s912-q201.dts | 9 +++++++++
17 files changed, 106 insertions(+), 18 deletions(-)

Changes since resent v2 at [4]:
- Fix invalid comment of useable memory attributes

Changes since original v2 at [3]:
- Typo in commit 2GiB -> 1GiB, 4GiB -> 2GiB

Changes since v2 at [2]:
- Moved all memory node out of dtsi
- Added comment about useable memory
- Fixed comment about secmon reserved zone

Changes since v1 at [1] :
- Renamed reg into linux,usable-memory to ovveride u-boot memory
- only kept secmon memory zone

[1] http://lkml.kernel.org/r/20161212101801.28491-1-narmstrong@xxxxxxxxxxxx
[2] http://lkml.kernel.org/r/1483105232-6242-1-git-send-email-narmstrong@xxxxxxxxxxxx
[3] http://lkml.kernel.org/r/1484128128-22454-1-git-send-email-narmstrong@xxxxxxxxxxxx
[4] http://lkml.kernel.org/r/1484128540-22662-1-git-send-email-narmstrong@xxxxxxxxxxxx

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..360ec0d 100644
--- a/arch/arm64/boot/dts/amlogic/meson-gx-p23x-q20x.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-gx-p23x-q20x.dtsi
@@ -54,11 +54,6 @@
stdout-path = "serial0:115200n8";
};

- memory@0 {
- device_type = "memory";
- reg = <0x0 0x0 0x0 0x80000000>;
- };
-
vddio_boot: regulator-vddio_boot {
compatible = "regulator-fixed";
regulator-name = "VDDIO_BOOT";
diff --git a/arch/arm64/boot/dts/amlogic/meson-gx.dtsi b/arch/arm64/boot/dts/amlogic/meson-gx.dtsi
index eada0b5..66677b5 100644
--- a/arch/arm64/boot/dts/amlogic/meson-gx.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-gx.dtsi
@@ -55,6 +55,18 @@
#address-cells = <2>;
#size-cells = <2>;

+ reserved-memory {
+ #address-cells = <2>;
+ #size-cells = <2>;
+ ranges;
+
+ /* 2MiB reserved for ARM Trusted Firmware (BL31) */
+ secmon: secmon {
+ reg = <0x0 0x10000000 0x0 0x200000>;
+ no-map;
+ };
+ };
+
cpus {
#address-cells = <0x2>;
#size-cells = <0x0>;
diff --git a/arch/arm64/boot/dts/amlogic/meson-gxbb-nexbox-a95x.dts b/arch/arm64/boot/dts/amlogic/meson-gxbb-nexbox-a95x.dts
index 4cbd626..54ffbff 100644
--- a/arch/arm64/boot/dts/amlogic/meson-gxbb-nexbox-a95x.dts
+++ b/arch/arm64/boot/dts/amlogic/meson-gxbb-nexbox-a95x.dts
@@ -62,7 +62,11 @@

memory@0 {
device_type = "memory";
- reg = <0x0 0x0 0x0 0x40000000>;
+ /*
+ * The first 16MiB of the DDR memory zone
+ * is reserved to the Hardware ROM Firmware
+ */
+ linux,usable-memory = <0x0 0x1000000 0x0 0x3f000000>;
};

leds {
diff --git a/arch/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts b/arch/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts
index 238fbea..1b474ba 100644
--- a/arch/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts
+++ b/arch/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts
@@ -61,7 +61,11 @@

memory@0 {
device_type = "memory";
- reg = <0x0 0x0 0x0 0x80000000>;
+ /*
+ * The first 16MiB of the DDR memory zone
+ * is reserved to the Hardware ROM Firmware
+ */
+ linux,usable-memory = <0x0 0x1000000 0x0 0x7f000000>;
};

usb_otg_pwr: regulator-usb-pwrs {
diff --git a/arch/arm64/boot/dts/amlogic/meson-gxbb-p200.dts b/arch/arm64/boot/dts/amlogic/meson-gxbb-p200.dts
index 03e3d76..af7b151 100644
--- a/arch/arm64/boot/dts/amlogic/meson-gxbb-p200.dts
+++ b/arch/arm64/boot/dts/amlogic/meson-gxbb-p200.dts
@@ -49,6 +49,15 @@
/ {
compatible = "amlogic,p200", "amlogic,meson-gxbb";
model = "Amlogic Meson GXBB P200 Development Board";
+
+ memory@0 {
+ device_type = "memory";
+ /*
+ * The first 16MiB of the DDR memory zone
+ * is reserved to the Hardware ROM Firmware
+ */
+ linux,usable-memory = <0x0 0x1000000 0x0 0x3f000000>;
+ };
};

&i2c_B {
diff --git a/arch/arm64/boot/dts/amlogic/meson-gxbb-p201.dts b/arch/arm64/boot/dts/amlogic/meson-gxbb-p201.dts
index 39bb037..215096c 100644
--- a/arch/arm64/boot/dts/amlogic/meson-gxbb-p201.dts
+++ b/arch/arm64/boot/dts/amlogic/meson-gxbb-p201.dts
@@ -49,4 +49,13 @@
/ {
compatible = "amlogic,p201", "amlogic,meson-gxbb";
model = "Amlogic Meson GXBB P201 Development Board";
+
+ memory@0 {
+ device_type = "memory";
+ /*
+ * The first 16MiB of the DDR memory zone
+ * is reserved to the Hardware ROM Firmware
+ */
+ linux,usable-memory = <0x0 0x1000000 0x0 0x3f000000>;
+ };
};
diff --git a/arch/arm64/boot/dts/amlogic/meson-gxbb-p20x.dtsi b/arch/arm64/boot/dts/amlogic/meson-gxbb-p20x.dtsi
index 4a96e0f..8052a39 100644
--- a/arch/arm64/boot/dts/amlogic/meson-gxbb-p20x.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-gxbb-p20x.dtsi
@@ -53,11 +53,6 @@
stdout-path = "serial0:115200n8";
};

- memory@0 {
- device_type = "memory";
- reg = <0x0 0x0 0x0 0x40000000>;
- };
-
usb_pwr: regulator-usb-pwrs {
compatible = "regulator-fixed";

diff --git a/arch/arm64/boot/dts/amlogic/meson-gxbb-vega-s95-meta.dts b/arch/arm64/boot/dts/amlogic/meson-gxbb-vega-s95-meta.dts
index 62fb496..8d6cfb9 100644
--- a/arch/arm64/boot/dts/amlogic/meson-gxbb-vega-s95-meta.dts
+++ b/arch/arm64/boot/dts/amlogic/meson-gxbb-vega-s95-meta.dts
@@ -50,6 +50,10 @@

memory@0 {
device_type = "memory";
- reg = <0x0 0x0 0x0 0x80000000>;
+ /*
+ * The first 16MiB of the DDR memory zone
+ * is reserved to the Hardware ROM Firmware
+ */
+ linux,usable-memory = <0x0 0x1000000 0x0 0x7f000000>;
};
};
diff --git a/arch/arm64/boot/dts/amlogic/meson-gxbb-vega-s95-pro.dts b/arch/arm64/boot/dts/amlogic/meson-gxbb-vega-s95-pro.dts
index 9a9663a..543e03a 100644
--- a/arch/arm64/boot/dts/amlogic/meson-gxbb-vega-s95-pro.dts
+++ b/arch/arm64/boot/dts/amlogic/meson-gxbb-vega-s95-pro.dts
@@ -50,6 +50,10 @@

memory@0 {
device_type = "memory";
- reg = <0x0 0x0 0x0 0x40000000>;
+ /*
+ * The first 16MiB of the DDR memory zone
+ * is reserved to the Hardware ROM Firmware
+ */
+ linux,usable-memory = <0x0 0x1000000 0x0 0x3f000000>;
};
};
diff --git a/arch/arm64/boot/dts/amlogic/meson-gxbb-vega-s95-telos.dts b/arch/arm64/boot/dts/amlogic/meson-gxbb-vega-s95-telos.dts
index 2fe167b..9a76fb5 100644
--- a/arch/arm64/boot/dts/amlogic/meson-gxbb-vega-s95-telos.dts
+++ b/arch/arm64/boot/dts/amlogic/meson-gxbb-vega-s95-telos.dts
@@ -50,6 +50,10 @@

memory@0 {
device_type = "memory";
- reg = <0x0 0x0 0x0 0x80000000>;
+ /*
+ * The first 16MiB of the DDR memory zone
+ * is reserved to the Hardware ROM Firmware
+ */
+ linux,usable-memory = <0x0 0x1000000 0x0 0x7f000000>;
};
};
diff --git a/arch/arm64/boot/dts/amlogic/meson-gxl-nexbox-a95x.dts b/arch/arm64/boot/dts/amlogic/meson-gxl-nexbox-a95x.dts
index cea4a3e..ac874ac 100644
--- a/arch/arm64/boot/dts/amlogic/meson-gxl-nexbox-a95x.dts
+++ b/arch/arm64/boot/dts/amlogic/meson-gxl-nexbox-a95x.dts
@@ -60,7 +60,11 @@

memory@0 {
device_type = "memory";
- reg = <0x0 0x0 0x0 0x80000000>;
+ /*
+ * The first 16MiB of the DDR memory zone
+ * is reserved to the Hardware ROM Firmware
+ */
+ linux,usable-memory = <0x0 0x1000000 0x0 0x3f000000>;
};

vddio_card: gpio-regulator {
diff --git a/arch/arm64/boot/dts/amlogic/meson-gxl-s905d-p230.dts b/arch/arm64/boot/dts/amlogic/meson-gxl-s905d-p230.dts
index f66939c..2e2b821 100644
--- a/arch/arm64/boot/dts/amlogic/meson-gxl-s905d-p230.dts
+++ b/arch/arm64/boot/dts/amlogic/meson-gxl-s905d-p230.dts
@@ -49,6 +49,15 @@
/ {
compatible = "amlogic,p230", "amlogic,s905d", "amlogic,meson-gxl";
model = "Amlogic Meson GXL (S905D) P230 Development Board";
+
+ memory@0 {
+ device_type = "memory";
+ /*
+ * The first 16MiB of the DDR memory zone
+ * is reserved to the Hardware ROM Firmware
+ */
+ linux,usable-memory = <0x0 0x1000000 0x0 0x7f000000>;
+ };
};

/* P230 has exclusive choice between internal or external PHY */
diff --git a/arch/arm64/boot/dts/amlogic/meson-gxl-s905d-p231.dts b/arch/arm64/boot/dts/amlogic/meson-gxl-s905d-p231.dts
index 95992cf..d252da9 100644
--- a/arch/arm64/boot/dts/amlogic/meson-gxl-s905d-p231.dts
+++ b/arch/arm64/boot/dts/amlogic/meson-gxl-s905d-p231.dts
@@ -49,6 +49,15 @@
/ {
compatible = "amlogic,p231", "amlogic,s905d", "amlogic,meson-gxl";
model = "Amlogic Meson GXL (S905D) P231 Development Board";
+
+ memory@0 {
+ device_type = "memory";
+ /*
+ * The first 16MiB of the DDR memory zone
+ * is reserved to the Hardware ROM Firmware
+ */
+ linux,usable-memory = <0x0 0x1000000 0x0 0x3f000000>;
+ };
};

/* P231 has only internal PHY port */
diff --git a/arch/arm64/boot/dts/amlogic/meson-gxl-s905x-p212.dts b/arch/arm64/boot/dts/amlogic/meson-gxl-s905x-p212.dts
index 9639f01..86f7db0 100644
--- a/arch/arm64/boot/dts/amlogic/meson-gxl-s905x-p212.dts
+++ b/arch/arm64/boot/dts/amlogic/meson-gxl-s905x-p212.dts
@@ -59,7 +59,11 @@

memory@0 {
device_type = "memory";
- reg = <0x0 0x0 0x0 0x80000000>;
+ /*
+ * The first 16MiB of the DDR memory zone
+ * is reserved to the Hardware ROM Firmware
+ */
+ linux,usable-memory = <0x0 0x1000000 0x0 0x3f000000>;
};
};

diff --git a/arch/arm64/boot/dts/amlogic/meson-gxm-nexbox-a1.dts b/arch/arm64/boot/dts/amlogic/meson-gxm-nexbox-a1.dts
index 5a337d3..2b65e06 100644
--- a/arch/arm64/boot/dts/amlogic/meson-gxm-nexbox-a1.dts
+++ b/arch/arm64/boot/dts/amlogic/meson-gxm-nexbox-a1.dts
@@ -62,7 +62,11 @@

memory@0 {
device_type = "memory";
- reg = <0x0 0x0 0x0 0x80000000>;
+ /*
+ * The first 16MiB of the DDR memory zone
+ * is reserved to the Hardware ROM Firmware
+ */
+ linux,usable-memory = <0x0 0x1000000 0x0 0x7f000000>;
};

vddio_boot: regulator-vddio-boot {
diff --git a/arch/arm64/boot/dts/amlogic/meson-gxm-s912-q200.dts b/arch/arm64/boot/dts/amlogic/meson-gxm-s912-q200.dts
index 5dbc660..cdfe618 100644
--- a/arch/arm64/boot/dts/amlogic/meson-gxm-s912-q200.dts
+++ b/arch/arm64/boot/dts/amlogic/meson-gxm-s912-q200.dts
@@ -49,6 +49,15 @@
/ {
compatible = "amlogic,q200", "amlogic,s912", "amlogic,meson-gxm";
model = "Amlogic Meson GXM (S912) Q200 Development Board";
+
+ memory@0 {
+ device_type = "memory";
+ /*
+ * The first 16MiB of the DDR memory zone
+ * is reserved to the Hardware ROM Firmware
+ */
+ linux,usable-memory = <0x0 0x1000000 0x0 0x7f000000>;
+ };
};

/* Q200 has exclusive choice between internal or external PHY */
diff --git a/arch/arm64/boot/dts/amlogic/meson-gxm-s912-q201.dts b/arch/arm64/boot/dts/amlogic/meson-gxm-s912-q201.dts
index 95e11d7..9047ffa 100644
--- a/arch/arm64/boot/dts/amlogic/meson-gxm-s912-q201.dts
+++ b/arch/arm64/boot/dts/amlogic/meson-gxm-s912-q201.dts
@@ -49,6 +49,15 @@
/ {
compatible = "amlogic,q201", "amlogic,s912", "amlogic,meson-gxm";
model = "Amlogic Meson GXM (S912) Q201 Development Board";
+
+ memory@0 {
+ device_type = "memory";
+ /*
+ * The first 16MiB of the DDR memory zone
+ * is reserved to the Hardware ROM Firmware
+ */
+ linux,usable-memory = <0x0 0x1000000 0x0 0x3f000000>;
+ };
};

/* Q201 has only internal PHY port */
--
1.9.1