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hw/arm/boot: fix SVE for EL3 direct kernel boot

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When booting a CPU with EL3 using the -kernel flag, set up CPTR_EL3 so
that SVE will not trap to EL3.

Signed-off-by: Rémi Denis-Courmont <remi.denis.courmont@huawei.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20201030151541.11976-1-remi@remlab.net
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Rémi Denis-Courmont 2020-11-02 16:52:16 +00:00 committed by Peter Maydell
parent 744a790ec0
commit 3f0b59070c
1 changed files with 3 additions and 0 deletions
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3
hw/arm/boot.c
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@ -742,6 +742,9 @@ static void do_cpu_reset(void *opaque)
if (cpu_isar_feature(aa64_mte, cpu)) {
env->cp15.scr_el3 |= SCR_ATA;
}
if (cpu_isar_feature(aa64_sve, cpu)) {
env->cp15.cptr_el[3] |= CPTR_EZ;
}
/* AArch64 kernels never boot in secure mode */
assert(!info->secure_boot);
/* This hook is only supported for AArch32 currently: