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0d62432834
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 71ed9f10a3 ("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>
91 lines
1.6 KiB
Diff
91 lines
1.6 KiB
Diff
--- a/arch/arm/boot/dts/qcom-ipq4019-ap.dk01.1-c1.dts
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+++ b/arch/arm/boot/dts/qcom-ipq4019-ap.dk01.1-c1.dts
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@@ -19,4 +19,87 @@
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/ {
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model = "Qualcomm Technologies, Inc. IPQ40xx/AP-DK01.1-C1";
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+ memory {
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+ device_type = "memory";
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+ reg = <0x80000000 0x10000000>;
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+ };
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+
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+ reserved-memory {
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+ #address-cells = <0x1>;
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+ #size-cells = <0x1>;
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+ ranges;
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+
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+ smem@87e00000 {
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+ reg = <0x87e00000 0x080000>;
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+ no-map;
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+ };
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+
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+ tz@87e80000 {
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+ reg = <0x87e80000 0x180000>;
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+ no-map;
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+ };
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+ };
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+};
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+
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+&spi_0 {
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+ mx25l25635f@0 {
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+ compatible = "mx25l25635f", "jedec,spi-nor";
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+ #address-cells = <1>;
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+ #size-cells = <1>;
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+ reg = <0>;
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+ spi-max-frequency = <24000000>;
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+
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+ SBL1@0 {
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+ label = "SBL1";
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+ reg = <0x0 0x40000>;
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+ read-only;
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+ };
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+ MIBIB@40000 {
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+ label = "MIBIB";
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+ reg = <0x40000 0x20000>;
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+ read-only;
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+ };
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+ QSEE@60000 {
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+ label = "QSEE";
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+ reg = <0x60000 0x60000>;
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+ read-only;
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+ };
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+ CDT@c0000 {
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+ label = "CDT";
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+ reg = <0xc0000 0x10000>;
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+ read-only;
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+ };
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+ DDRPARAMS@d0000 {
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+ label = "DDRPARAMS";
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+ reg = <0xd0000 0x10000>;
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+ read-only;
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+ };
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+ APPSBLENV@e0000 {
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+ label = "APPSBLENV";
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+ reg = <0xe0000 0x10000>;
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+ read-only;
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+ };
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+ APPSBL@f0000 {
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+ label = "APPSBL";
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+ reg = <0xf0000 0x80000>;
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+ read-only;
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+ };
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+ ART@170000 {
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+ label = "ART";
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+ reg = <0x170000 0x10000>;
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+ read-only;
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+ };
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+ kernel@180000 {
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+ label = "kernel";
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+ reg = <0x180000 0x400000>;
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+ };
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+ rootfs@580000 {
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+ label = "rootfs";
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+ reg = <0x580000 0x1600000>;
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+ };
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+ firmware@180000 {
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+ label = "firmware";
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+ reg = <0x180000 0x1a00000>;
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+ };
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+ };
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};
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