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powerpc/prom: convert PROM_BUG() to standard trap

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Prior to commit 1bd98d7fbaf5 ("ppc64: Update BUG handling based on
ppc32"), BUG() family was using BUG_ILLEGAL_INSTRUCTION which
was an invalid instruction opcode to trap into program check
exception.

That commit converted them to using standard trap instructions,
but prom/prom_init and their PROM_BUG() macro were left over.
head_64.S and exception-64s.S were left aside as well.

Convert them to using the standard BUG infrastructure.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/cdaf4bbbb64c288a077845846f04b12683f8875a.1566817807.git.christophe.leroy@c-s.fr
This commit is contained in:
Christophe Leroy
2019-08-26 11:10:23 +00:00
committed by Michael Ellerman
parent 405efc5980
commit 63ce271b5e
4 changed files with 7 additions and 12 deletions
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6
arch/powerpc/kernel/head_64.S
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@@ -182,7 +182,8 @@ __secondary_hold:
isync
bctr
#else
BUG_OPCODE
0: trap
EMIT_BUG_ENTRY 0b, __FILE__, __LINE__, 0
#endif
CLOSE_FIXED_SECTION(first_256B)
@@ -998,7 +999,8 @@ start_here_common:
bl start_kernel
/* Not reached */
BUG_OPCODE
trap
EMIT_BUG_ENTRY 0b, __FILE__, __LINE__, 0
/*
* We put a few things here that have to be page-aligned.