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arm: Don't clear ARM_FEATURE_PMSA for no-mpu configs

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Fix the handling of QOM properties for PMSA CPUs with no MPU:

Allow no-MPU to be specified by either:
 * has-mpu = false
 * pmsav7_dregion = 0
and make setting one imply the other. Don't clear the PMSA
feature bit in this situation.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Alistair Francis <alistair.francis@xilinx.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 1493122030-32191-6-git-send-email-peter.maydell@linaro.org
This commit is contained in:
Peter Maydell 2017-06-02 11:51:47 +01:00
parent 452a095526
commit f50cd31413
1 changed files with 7 additions and 1 deletions
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8
target/arm/cpu.c
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@ -763,8 +763,14 @@ static void arm_cpu_realizefn(DeviceState *dev, Error **errp)
cpu->id_pfr1 &= ~0xf000;
}
/* MPU can be configured out of a PMSA CPU either by setting has-mpu
* to false or by setting pmsav7-dregion to 0.
*/
if (!cpu->has_mpu) {
unset_feature(env, ARM_FEATURE_PMSA);
cpu->pmsav7_dregion = 0;
}
if (cpu->pmsav7_dregion == 0) {
cpu->has_mpu = false;
}
if (arm_feature(env, ARM_FEATURE_PMSA) &&