powerpc/32: move LOAD_MSR_KERNEL() into head_32.h and use it

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As preparation for using head_32.h for head_40x.S, move
LOAD_MSR_KERNEL() there and use it to load r10 with MSR_KERNEL value.

In the mean time, this patch modifies it so that it takes into account
the size of the passed value to determine if 'li' can be used or if
'lis/ori' is needed instead of using the size of MSR_KERNEL. This is
done by using gas macro.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

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Christophe Leroy 2019-04-30 12:38:51 +00:00 • committed by Michael Ellerman

parent 8a23fdec3d

commit 37737a2afd

2 changed files with 15 additions and 9 deletions

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9

arch/powerpc/kernel/entry_32.S

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15

arch/powerpc/kernel/head_32.h

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