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target/arm: Implement v8.1M REVIDR register

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In v8.1M a REVIDR register is defined, which is at address 0xe00ecfc
and is a read-only IMPDEF register providing implementation specific
minor revision information, like the v8A REVIDR_EL1. Implement this.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20201119215617.29887-19-peter.maydell@linaro.org
This commit is contained in:
Peter Maydell 2020-11-19 21:56:07 +00:00
parent be9500bb17
commit cb45adb654
1 changed files with 5 additions and 0 deletions
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5
hw/intc/armv7m_nvic.c
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@ -1025,6 +1025,11 @@ static uint32_t nvic_readl(NVICState *s, uint32_t offset, MemTxAttrs attrs)
}
return val;
}
case 0xcfc:
if (!arm_feature(&cpu->env, ARM_FEATURE_V8_1M)) {
goto bad_offset;
}
return cpu->revidr;
case 0xd00: /* CPUID Base. */
return cpu->midr;
case 0xd04: /* Interrupt Control State (ICSR) */