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hw/arm/boot: Fix MTE for EL3 direct kernel boot 

When booting an EL3 cpu with -kernel, we set up EL3 and then
drop down to EL2.  We need to enable access to v8.5-MemTag
tag allocation at EL3 before doing so.

Reported-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200724163853.504655-3-richard.henderson@linaro.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
master
Richard Henderson 2020-07-27 16:12:10 +01:00 committed by Peter Maydell
parent 24ac0d309a
commit 7ad01d78a9
1 changed files with 3 additions and 0 deletions
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3
hw/arm/boot.c
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@ -739,6 +739,9 @@ static void do_cpu_reset(void *opaque)
if (cpu_isar_feature(aa64_pauth, cpu)) {
env->cp15.scr_el3 |= SCR_API | SCR_APK;
}
if (cpu_isar_feature(aa64_mte, cpu)) {
env->cp15.scr_el3 |= SCR_ATA;
}
/* AArch64 kernels never boot in secure mode */
assert(!info->secure_boot);
/* This hook is only supported for AArch32 currently: