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powerpc/fadump: add helper functions

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Add helper functions to setup & free CPU notes buffer and to find if a
given memory area is contiguous. Also, use boolean as return type for
the function that finds if boot memory area is contiguous. While at
it, save the virtual address of CPU notes buffer instead of physical
address as virtual address is used often.

Signed-off-by: Hari Bathini <hbathini@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/156821318971.5656.9281936950510635858.stgit@hbathini.in.ibm.com
This commit is contained in:
Hari Bathini
2019-09-11 20:16:36 +05:30
committed by Michael Ellerman
parent ca986d7fa7
commit 961cf26a98
2 changed files with 67 additions and 62 deletions
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arch/powerpc/include/asm/fadump-internal.h
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@@ -71,7 +71,7 @@ struct fw_dump {
unsigned long boot_memory_size;
unsigned long fadumphdr_addr;
unsigned long cpu_notes_buf;
unsigned long cpu_notes_buf_vaddr;
unsigned long cpu_notes_buf_size;
int ibm_configure_kernel_dump;