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[PATCH] powerpc: Parse crashkernel= parameter in first kernel

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This patch adds code to parse and setup the crash kernel resource in the
first kernel. PPC64 ignores the @x part, we always run at 32 MB.

Signed-off-by: Haren Myneni <haren@us.ibm.com>
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Michael Ellerman
2005-12-04 18:39:48 +11:00
committed by Paul Mackerras
parent cc53291521
commit dcee30361d
2 changed files with 64 additions and 0 deletions
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11
arch/powerpc/kernel/prom.c
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@@ -29,6 +29,7 @@
#include <linux/initrd.h>
#include <linux/bitops.h>
#include <linux/module.h>
#include <linux/kexec.h>
#include <asm/prom.h>
#include <asm/rtas.h>
@@ -1198,6 +1199,16 @@ static int __init early_init_dt_scan_chosen(unsigned long node,
}
#endif /* CONFIG_PPC_RTAS */
#ifdef CONFIG_KEXEC
lprop = (u64*)of_get_flat_dt_prop(node, "linux,crashkernel-base", NULL);
if (lprop)
crashk_res.start = *lprop;
lprop = (u64*)of_get_flat_dt_prop(node, "linux,crashkernel-size", NULL);
if (lprop)
crashk_res.end = crashk_res.start + *lprop - 1;
#endif
/* break now */
return 1;
}