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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>
This commit is contained in:
Andrew Jeffery 2020-10-22 12:17:31 +10:30 committed by Joel Stanley
parent c7b74131c7
commit c1fc133f5b
1 changed files with 9 additions and 0 deletions
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9
arch/arm/boot/dts/aspeed-bmc-opp-tacoma.dts
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@ -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";