[PATCH v2 5/6] ARM: dts: rainier: Add reserved memory for ramoops
Andrew Jeffery
andrew at aj.id.au
Thu Oct 22 12:47:30 AEDT 2020
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 at 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 802027a3c43c..8431cf1b32e6 100644
--- a/arch/arm/boot/dts/aspeed-bmc-ibm-rainier.dts
+++ b/arch/arm/boot/dts/aspeed-bmc-ibm-rainier.dts
@@ -55,6 +55,15 @@ flash_memory: region at B8000000 {
/* 48MB region from the end of flash to start of vga memory */
+ ramoops at 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 region is dictated by hardware strapping */
vga_memory: region at bf000000 {
no-map;
--
2.25.1
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