[Skiboot] [PATCH]: Implementation of opalmsg command in crash-utility

Stewart Smith stewart at linux.vnet.ibm.com
Thu Feb 16 18:02:15 AEDT 2017

Ankit Kumar <ankit at linux.vnet.ibm.com> writes:
> +/*
> + * Definitions derived from OPAL. These need to track corresponding values in
> + * https://github.com/open-power/skiboot/blob/master/include/mem-map.h
> + */
> +#define SKIBOOT_CONSOLE_DUMP_START	0x31000000
> +#define SKIBOOT_CONSOLE_DUMP_SIZE	0x40000

Where did you get this size from?

INMEM_CON_LEN in skiboot is 0x100000

Even if booting a kdump kernel, you're going to have a device tree with
the appropriate nodes present to *programatically* find out where the
console is. You should certainly do that.

We've never said that the skiboot memory map is ABI, so it *may* change.

Stewart Smith
OPAL Architect, IBM.

More information about the Skiboot mailing list