[PATCH 1/2] ARM: dts: rainier: Add reserved memory for ramoops

[Andrew Jeffery]

Reserve a 1.5MiB region of memory to record kmsg dumps, console and
userspace message state into 16kiB ring-buffer slots. The sizing allows
for up to 32 dumps to be captured and read out.

Set max-reason to KMSG_DUMP_EMERG to capture bad-path reboots.

Signed-off-by: Andrew Jeffery <and...@aj.id.au>
---
 arch/arm/boot/dts/aspeed-bmc-ibm-rainier.dts | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/arch/arm/boot/dts/aspeed-bmc-ibm-rainier.dts 
b/arch/arm/boot/dts/aspeed-bmc-ibm-rainier.dts
index 183e1a4dcc65..89729ee698c5 100644
--- a/arch/arm/boot/dts/aspeed-bmc-ibm-rainier.dts
+++ b/arch/arm/boot/dts/aspeed-bmc-ibm-rainier.dts
@@ -47,6 +47,15 @@ reserved-memory {
                #size-cells = <1>;
                ranges;
 
+               ramoops@b7e80000 {
+                       compatible = "ramoops";
+                       reg = <0xb7e80000 0x180000>;
+                       record-size = <0x4000>;
+                       console-size = <0x4000>;
+                       pmsg-size = <0x4000>;
+                       max-reason = <3>; /* KMSG_DUMP_EMERG */
+               };
+
                flash_memory: region@b8000000 {
                        no-map;
                        reg = <0xb8000000 0x04000000>; /* 64M */
-- 
2.25.1