diff options
author | Sven Eckelmann <sven.eckelmann@openmesh.com> | 2018-04-17 14:31:53 +0200 |
---|---|---|
committer | Mathias Kresin <dev@kresin.me> | 2018-04-20 20:58:52 +0200 |
commit | 0d6243283415683dc792ea34fcba885454908836 (patch) | |
tree | 79b6e3354a7ee03323573c80b5d3e01ab2c3ecc3 /target/linux/ipq40xx/files-4.14/arch/arm | |
parent | 74a0d8cd92c7e753c6a342a7b90151ec042a03c5 (diff) | |
download | upstream-0d6243283415683dc792ea34fcba885454908836.tar.gz upstream-0d6243283415683dc792ea34fcba885454908836.tar.bz2 upstream-0d6243283415683dc792ea34fcba885454908836.zip |
ipq40xx: Remove unused reserved-memory nodes
The reserved-memory regions are mostly undocumented by QCA and are named
very unspecific in the QSDK device trees. It was tried to clean them up by
commit 71ed9f10a33e ("ipq40xx: Use detailed reserved memory for A42") and
similar changes.
The features which require these regions were mostly unknown but
Senthilkumar N L <snlakshm@qti.qualcomm.com> and Sricharan Ramabadhran
<srichara@qti.qualcomm.com> provided some more insight in some of them:
* crash dump feature
- a couple of regions used when 'qca,scm_restart_reason' dt node has the
value 'dload_status' not set to 1
+ apps_bl <0x87000000 0x400000>
+ sbl <0x87400000 0x100000>
+ cnss_debug <0x87400000 0x100000>
+ cpu_context_dump <0x87b00000 0x080000>
- required driver not available in Linux
- safe to remove
* QSEE app execution
- region tz_apps <0x87b80000 0x280000>
- required driver not available in Linux
- safe to remove
* communication with TZ/QSEE
- region smem <0x87b80000 0x280000>
- driver changes not yet upstreamed
- must not be removed because any access can crash kernel/program
* trustzone (QSEE) private memory
- region tz <0x87e80000 0x180000>
- must not be removed because any access can crash kernel/program
Removing the unnecessary regions saves some kilobyte of reserved-memory and
cleans up the device tree:
* 2560 KiB
- 8devices Jalapeno
- AVM FRITZ!Box 4040
- Compex WPJ428
- Meraki MR33 Access Point
- OpenMesh A42
* 14336 KiB
- GL.iNet GL-B1300
- Qualcomm Technologies, Inc. IPQ40xx/AP-DK01.1-C1
Signed-off-by: Sven Eckelmann <sven.eckelmann@openmesh.com>
Diffstat (limited to 'target/linux/ipq40xx/files-4.14/arch/arm')
6 files changed, 0 insertions, 50 deletions
diff --git a/target/linux/ipq40xx/files-4.14/arch/arm/boot/dts/qcom-ipq4018-a42.dts b/target/linux/ipq40xx/files-4.14/arch/arm/boot/dts/qcom-ipq4018-a42.dts index d365a7e530..3838f884a8 100644 --- a/target/linux/ipq40xx/files-4.14/arch/arm/boot/dts/qcom-ipq4018-a42.dts +++ b/target/linux/ipq40xx/files-4.14/arch/arm/boot/dts/qcom-ipq4018-a42.dts @@ -30,11 +30,6 @@ #size-cells = <0x1>; ranges; - tz_apps@87b80000 { - reg = <0x87b80000 0x280000>; - no-map; - }; - smem@87e00000 { reg = <0x87e00000 0x080000>; no-map; diff --git a/target/linux/ipq40xx/files-4.14/arch/arm/boot/dts/qcom-ipq4018-fritz4040.dts b/target/linux/ipq40xx/files-4.14/arch/arm/boot/dts/qcom-ipq4018-fritz4040.dts index 4b5cbcac33..865e1fb1ce 100644 --- a/target/linux/ipq40xx/files-4.14/arch/arm/boot/dts/qcom-ipq4018-fritz4040.dts +++ b/target/linux/ipq40xx/files-4.14/arch/arm/boot/dts/qcom-ipq4018-fritz4040.dts @@ -36,11 +36,6 @@ #size-cells = <0x1>; ranges; - tz_apps@87b80000 { - reg = <0x87b80000 0x280000>; - reusable; - }; - smem@87e00000 { reg = <0x87e00000 0x080000>; no-map; diff --git a/target/linux/ipq40xx/files-4.14/arch/arm/boot/dts/qcom-ipq4018-jalapeno.dts b/target/linux/ipq40xx/files-4.14/arch/arm/boot/dts/qcom-ipq4018-jalapeno.dts index 7e2bdcc7cd..f9ea31acb4 100644 --- a/target/linux/ipq40xx/files-4.14/arch/arm/boot/dts/qcom-ipq4018-jalapeno.dts +++ b/target/linux/ipq40xx/files-4.14/arch/arm/boot/dts/qcom-ipq4018-jalapeno.dts @@ -30,11 +30,6 @@ #size-cells = <0x1>; ranges; - tz_apps@87b80000 { - reg = <0x87b80000 0x280000>; - no-map; - }; - smem@87e00000 { reg = <0x87e00000 0x080000>; no-map; diff --git a/target/linux/ipq40xx/files-4.14/arch/arm/boot/dts/qcom-ipq4028-wpj428.dts b/target/linux/ipq40xx/files-4.14/arch/arm/boot/dts/qcom-ipq4028-wpj428.dts index 88ea370858..e970e769a6 100644 --- a/target/linux/ipq40xx/files-4.14/arch/arm/boot/dts/qcom-ipq4028-wpj428.dts +++ b/target/linux/ipq40xx/files-4.14/arch/arm/boot/dts/qcom-ipq4028-wpj428.dts @@ -31,11 +31,6 @@ #size-cells = <0x1>; ranges; - tz_apps@87b80000 { - reg = <0x87b80000 0x280000>; - no-map; - }; - smem@87e00000 { reg = <0x87e00000 0x080000>; no-map; diff --git a/target/linux/ipq40xx/files-4.14/arch/arm/boot/dts/qcom-ipq4029-gl-b1300.dts b/target/linux/ipq40xx/files-4.14/arch/arm/boot/dts/qcom-ipq4029-gl-b1300.dts index c4b002bdd6..a34d2cd1c9 100644 --- a/target/linux/ipq40xx/files-4.14/arch/arm/boot/dts/qcom-ipq4029-gl-b1300.dts +++ b/target/linux/ipq40xx/files-4.14/arch/arm/boot/dts/qcom-ipq4029-gl-b1300.dts @@ -40,31 +40,6 @@ #size-cells = <0x1>; ranges; - apps_bl@87000000 { - reg = <0x87000000 0x400000>; - no-map; - }; - - sbl@87400000 { - reg = <0x87400000 0x100000>; - no-map; - }; - - cnss_debug@87500000 { - reg = <0x87500000 0x600000>; - no-map; - }; - - cpu_context_dump@87b00000 { - reg = <0x87b00000 0x080000>; - no-map; - }; - - tz_apps@87b80000 { - reg = <0x87b80000 0x280000>; - no-map; - }; - smem@87e00000 { reg = <0x87e00000 0x080000>; no-map; diff --git a/target/linux/ipq40xx/files-4.14/arch/arm/boot/dts/qcom-ipq4029-mr33.dts b/target/linux/ipq40xx/files-4.14/arch/arm/boot/dts/qcom-ipq4029-mr33.dts index a709ae96bd..c52bcf1b02 100644 --- a/target/linux/ipq40xx/files-4.14/arch/arm/boot/dts/qcom-ipq4029-mr33.dts +++ b/target/linux/ipq40xx/files-4.14/arch/arm/boot/dts/qcom-ipq4029-mr33.dts @@ -39,11 +39,6 @@ #size-cells = <0x1>; ranges; - tz_apps@87b80000 { - reg = <0x87b80000 0x280000>; - reusable; - }; - smem@87e00000 { reg = <0x87e00000 0x080000>; no-map; |