Commit c1fc133f authored Oct 22, 2020 by Andrew Jeffery Committed by Joel Stanley Nov 19, 2020

ARM: dts: tacoma: 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/20201022014731.2035438-7-andrew@aj.id.au


Signed-off-by: Joel Stanley <joel@jms.id.au>

parent c7b74131

arch/arm/boot/dts/aspeed-bmc-opp-tacoma.dts

+9 −0

Original line number	Diff line number	Diff line
		@@ -31,6 +31,15 @@
		reg = <0xb8000000 0x4000000>; /* 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";

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