From: Andrew Jeffery <andrew@aj.id.au>
Date: Thu, 22 Oct 2020 01:47:30 +0000 (+1030)
Subject: ARM: dts: rainier: Add reserved memory for ramoops
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=c7b74131c755bb73eb836bcb46fcc28fbab39717;p=linux.git

ARM: dts: rainier: Add reserved memory for ramoops

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 16 dumps to be captured and read out.

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

Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
Reviewed-by: Joel Stanley <joel@jms.id.au>
Link: https://lore.kernel.org/r/20201022014731.2035438-6-andrew@aj.id.au
Signed-off-by: Joel Stanley <joel@jms.id.au>
---

diff --git a/arch/arm/boot/dts/aspeed-bmc-ibm-rainier.dts b/arch/arm/boot/dts/aspeed-bmc-ibm-rainier.dts
index ac649fde802ec..63123bf137e30 100644
--- a/arch/arm/boot/dts/aspeed-bmc-ibm-rainier.dts
+++ b/arch/arm/boot/dts/aspeed-bmc-ibm-rainier.dts
@@ -52,6 +52,15 @@
 			reg = <0xB8000000 0x04000000>; /* 64M */
 		};
 
+		ramoops@bc000000 {
+			compatible = "ramoops";
+			reg = <0xbc000000 0x180000>; /* 16 * (3 * 0x8000) */
+			record-size = <0x8000>;
+			console-size = <0x8000>;
+			pmsg-size = <0x8000>;
+			max-reason = <3>; /* KMSG_DUMP_EMERG */
+		};
+
 		vga_memory: region@bf000000 {
 			no-map;
 			compatible = "shared-dma-pool";