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powerpc64le: fix boot when using QEMU PowerNV

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When using QEMU PowerNV with latest op-build release (v2.7), its
kexec transfers control to FreeBSD kernel in BE mode, causing an
instant exception on LE kernels. Make kboot able to detect and
swap endian to fix this.

Reviewed by:		imp
Sponsored by:		Instituto de Pesquisas Eldorado (eldorado.org.br)
Differential Revision:	https://reviews.freebsd.org/D33104
This commit is contained in:
Leandro Lupori 2021-11-25 16:41:46 -03:00
parent b9f3b63ab2
commit e141b62d20
1 changed files with 3 additions and 0 deletions
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3
sys/powerpc/aim/locore64.S
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@ -82,6 +82,9 @@ TOC_ENTRY(trapstk)
*/
.section ".text.kboot", "x", @progbits
kbootentry:
#ifdef __LITTLE_ENDIAN__
RETURN_TO_NATIVE_ENDIAN
#endif
b __start
. = kbootentry + 0x40 /* Magic address used in platform layer */
.global smp_spin_sem