arm64: dts: qcom: ipq5332: add few more reserved memory region

In IPQ SoCs, bootloader will collect the system RAM contents upon crash for
the post morterm analysis. If we don't reserve the memory region used by
bootloader, obviously linux will consume it and upon next boot on crash,
bootloader will be loaded in the same region, which will lead to loose some
of the data, sometimes we may miss out critical information. So lets
reserve the region used by the bootloader.

Similarly SBL copies some data into the reserved region and it will be
used in the crash scenario. So reserve 1MB for SBL as well.

While at it, drop the size padding in the smem memory region.

Signed-off-by: Kathiravan T <quic_kathirav@quicinc.com>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230519133844.23512-4-quic_kathirav@quicinc.com

diff --git a/arch/arm64/boot/dts/qcom/ipq5332.dtsi b/arch/arm64/boot/dts/qcom/ipq5332.dtsi
index e7d3ec7..b455887 100644 (file)
--- a/arch/arm64/boot/dts/qcom/ipq5332.dtsi
+++ b/arch/arm64/boot/dts/qcom/ipq5332.dtsi
@@ -114,6 +114,16 @@
                #size-cells = <2>;
                ranges;
 
+               bootloader@4a100000 {
+                       reg = <0x0 0x4a100000 0x0 0x400000>;
+                       no-map;
+               };
+
+               sbl@4a500000 {
+                       reg = <0x0 0x4a500000 0x0 0x100000>;
+                       no-map;
+               };
+
                tz_mem: tz@4a600000 {
                        reg = <0x0 0x4a600000 0x0 0x200000>;
                        no-map;
@@ -121,7 +131,7 @@
 
                smem@4a800000 {
                        compatible = "qcom,smem";
-                       reg = <0x0 0x4a800000 0x0 0x00100000>;
+                       reg = <0x0 0x4a800000 0x0 0x100000>;
                        no-map;
 
                        hwlocks = <&tcsr_mutex 0>;