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authorPeter Maydell <peter.maydell@linaro.org>2019-02-21 18:17:46 +0000
committerPeter Maydell <peter.maydell@linaro.org>2019-02-21 18:17:46 +0000
commit37e571f1e0101f9aab29235afa651028723eb4c5 (patch)
treed3b7bf1a5229fcb179fa865920a1c90c97cc074e /qemu.sasl
parent6c1f6f2733a7692793135ea5ce72b829add99a50 (diff)
hw/misc/tz-ppc: Support having unused ports in the middle of the range
The Peripheral Protection Controller's handling of unused ports is that if there is nothing connected to the port's downstream then it does not create the sysbus MMIO region for the upstream end of the port. This results in odd behaviour when there is an unused port in the middle of the range: since sysbus MMIO regions are implicitly consecutively allocated, any used ports above the unused ones end up with sysbus MMIO region numbers that don't match the port number. Avoid this numbering mismatch by creating dummy MMIO regions for the unused ports. This doesn't change anything for our existing boards, which don't have any gaps in the middle of the port ranges they use; but it will be needed for the Musca board. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
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