Re: [PATCH v2 6/7] hw/arm/xlnx-zcu102: Restrict ZynqMP ZCU102 board to 64-bit build

[Philippe Mathieu-Daudé]

On 1/31/21 1:31 PM, Philippe Mathieu-Daudé wrote:
> On 1/31/21 11:59 AM, Philippe Mathieu-Daudé wrote:
>> The ZynqMP ZCU102 board only use the Cortex-A53 CPU, which
>> is only available in the 64-bit build. It is pointless to
>> have this board present in the 32-bit build where this CPU
>> is not available.
>>
>> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
>> ---
>> Cc: Alistair Francis <alistair@alistair23.me>
>> Cc: "Edgar E. Iglesias" <edgar.iglesias@gmail.com>
>> ---
>>  hw/arm/meson.build | 2 +-
>>  1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/hw/arm/meson.build b/hw/arm/meson.build
>> index 059ff7382f2..345099f5a1b 100644
>> --- a/hw/arm/meson.build
>> +++ b/hw/arm/meson.build
>> @@ -41,7 +41,7 @@
>>  arm_ss.add(when: 'CONFIG_RASPI', if_true: files('bcm2835_peripherals.c', 
>> 'bcm2836.c', 'raspi.c'))
>>  arm_ss.add(when: 'CONFIG_STM32F205_SOC', if_true: files('stm32f205_soc.c'))
>>  arm_ss.add(when: 'CONFIG_STM32F405_SOC', if_true: files('stm32f405_soc.c'))
>> -arm_ss.add(when: 'CONFIG_XLNX_ZYNQMP_ARM', if_true: files('xlnx-zynqmp.c', 
>> 'xlnx-zcu102.c'))
>> +arm_ss.add(when: ['CONFIG_XLNX_ZYNQMP_ARM', 'TARGET_AARCH64'], if_true: 
>> files('xlnx-zynqmp.c', 'xlnx-zcu102.c'))
> 
> Please disregard this patch, it shows that my other patch
> "meson: Introduce target-specific Kconfig" is incorrect:
> https://lists.gnu.org/archive/html/qemu-devel/2021-01/msg07989.html
> Probably because per docs/devel/kconfig.rst "devices are usually
> ``default y`` if and only if they have at least one ``depends on``".

The problem is the XLNX_ZYNQMP_ARM was incorrectly selected,
enabling AARCH64.
https://lists.gnu.org/archive/html/qemu-devel/2021-01/msg08014.html

With this change there is no problem (and this patch is not necessary):

 config XLNX_ZYNQMP_ARM
     bool
-    default y if TCG && ARM
+    default y if TCG && AARCH64

Regards,

Phil.