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ARM: PSCI: Rework the DT handler slightly

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The way the PSCI DT update happens currently means we pull in
<asm/armv7.h> everywhere, including on ARMv8 and that in turn brings in
<asm/io.h> for some non-PSCI related things that header needs to deal
with.

To fix this, we rework the hook slightly.  A good portion of
arch/arm/cpu/armv7/virt-dt.c is common looking and I hope that when PSCI
is needed on ARMv8 we can re-use this by and large.  So rename the
current hook to psci_update_dt(), move the prototype to <asm/psci.h> and
add an #ifdef that will make re-use later easier.

Reported-by: York Sun <yorksun@freescale.com>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: York Sun <yorksun@freescale.com>
Cc: Ian Campbell <ijc@hellion.org.uk>
Cc: Hans de Goede <hdegoede@redhat.com>
Cc: Albert ARIBAUD <albert.u.boot@aribaud.net>
Signed-off-by: Tom Rini <trini@konsulko.com>
Acked-by: York Sun <yorksun@freescale.com>
This commit is contained in:
Tom Rini 2015-03-05 20:19:36 -05:00
parent 52a7c98a17
commit dd09f7e73c
4 changed files with 9 additions and 4 deletions
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4
arch/arm/include/asm/psci.h
View file

@ -32,4 +32,8 @@
#define ARM_PSCI_RET_INVAL (-2)
#define ARM_PSCI_RET_DENIED (-3)
#ifndef __ASSEMBLY__
int psci_update_dt(void *fdt);
#endif /* ! __ASSEMBLY__ */
#endif /* __ARM_PSCI_H__ */