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arm: Disable the VFP during boot

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The VFP code expects the kernel to boot with VFP disabled, but some
boards will boot with it enabled.  Make sure that vfp_init() disables
the VFP on each CPU during boot.

PR:		273752
Reviewed by:	andrew
Diagnosed by:	Thomas Skibo <thomas-bsd@skibo.net>
MFC after:	1 week

(cherry picked from commit ce2f34ade8)
This commit is contained in:
Mark Johnston 2023-12-11 09:08:49 -05:00
parent 42d1aa8862
commit f5ae760cfe
1 changed files with 2 additions and 0 deletions
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2
sys/arm/arm/vfp.c
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@ -181,6 +181,8 @@ vfp_init(void)
elf_hwcap |= HWCAP_VFPv4;
}
vfp_disable();
/* initialize the coprocess 10 and 11 calls
* These are called to restore the registers and enable
* the VFP hardware.