Re: [PATCH 00/14] target-info: remove machine_typename

[Pierrick Bouvier <pierrick.bouvier@oss.qualcomm.com>]

On 9/3/2026 3:33 AM, Yonggang Luo wrote:
> 
> 
>>
>> > Pierrick Bouvier (14):
>> >    qom/object: add is_available callback to TypeInfo
>>
> 
> Patches for is_available callback to TypeInfo, it's can be merged latter
>

It's needed because files in patch 2 already depend on existing
filtering mechanism to distinguish between arm and aarch64.
We found other places where such filter could be used to specify target
related types within a single C file, thus allowing to remove #ifdef
TARGET_X easily.

> The reason is for the following command to execute:
> 
> we need add target_info_select and pass TargetInfo to is_available
> 
> - Move target_info() into qom/object.c. Default to SYS_EMU_TARGET_NONE
>   until a real target is selected.
> - Add target_info_select(); it may be called only once with a non-NULL
>   TargetInfo that is not SYS_EMU_TARGET_NONE.
> - Invoke TypeInfo.is_available after select, passing target_info().
> - Change target_* helpers to take const TargetInfo *.

We can wait to have a need for this. As long as there is no
heterogeneous support, it's safe to assume there is a single target
active globally.

> - Select the sole TargetInfo in user-mode MODULE_INIT_TARGET_INFO.
> 
> With these changes, when `qemu-system` does not select TargetInfo, we
> can still list all machines and devices for each target properly.
> ```
> $ ./qemu-system.exe -machine ?
> Supported machines are:
> none:
> amd-microblaze-v-generic AMD Microblaze-V generic platform
> xlnx-versal-virt     AMD Versal Virtual development board (alias of amd-
> versal-virt)
> amd-versal-virt      AMD Versal Virtual development board
> amd-versal2-virt     AMD Versal Gen 2 Virtual development board
> anacapa-bmc          Facebook Anacapa BMC (Cortex-A7)
> ast1030-evb          Aspeed AST1030 MiniBMC (Cortex-M4)
> ast1040-evb          Aspeed AST1040 BIC EVB (Cortex-M4F)
> ast1060-evb          Aspeed AST1060 Platform Root of Trust (Cortex-M4)
> ast2500-evb          Aspeed AST2500 EVB (ARM1176)
> ast2600-evb          Aspeed AST2600 EVB (Cortex-A7)
> axiado-scm3003       Axiado SCM3003 EVK Board
> b-l475e-iot01a       B-L475E-IOT01A Discovery Kit (Cortex-M4)
> bletchley-bmc        Facebook Bletchley BMC (Cortex-A7)
> boston-aia           MIPS Boston-aia
> bpim2u               Bananapi M2U (Cortex-A7)
> canon-a1100          Canon PowerShot A1100 IS (ARM946)
> catalina-bmc         Facebook Catalina BMC (Cortex-A7)
> collie               Sharp SL-5500 (Collie) PDA (SA-1110)
> cubieboard           cubietech cubieboard (Cortex-A8)
> emcraft-sf2          SmartFusion2 SOM kit from Emcraft (M2S010)
> fby35-bmc            Facebook fby35 BMC (Cortex-A7)
> fuji-bmc             Facebook Fuji BMC (Cortex-A7)
> g220a-bmc            Bytedance G220A BMC (ARM1176)
> gb200nvl-bmc         Nvidia GB200NVL BMC (Cortex-A7)
> imx25-pdk            ARM i.MX25 PDK board (ARM926)
> imx8mm-evk           NXP i.MX 8MM EVK Board
> imx8mp-evk           NXP i.MX 8M Plus EVK Board
> integratorcp         ARM Integrator/CP (ARM926EJ-S)
> kudo-bmc             Kudo BMC (Cortex-A9)
> kzm                  ARM KZM Emulation Baseboard (ARM1136)
> lm3s6965evb          Stellaris LM3S6965EVB (Cortex-M3)
> lm3s811evb           Stellaris LM3S811EVB (Cortex-M3)
> max78000fthr         MAX78000FTHR Board (Cortex-M4 / (Unimplemented) RISC-V)
> mcimx6ul-evk         Freescale i.MX6UL Evaluation Kit (Cortex-A7)
> mcimx7d-sabre        Freescale i.MX7 DUAL SABRE (Cortex-A7)
> microbit             BBC micro:bit (Cortex-M0)
> mori-bmc             Mori BMC (Cortex-A9)
> mps2-an385           ARM MPS2 with AN385 FPGA image for Cortex-M3
> mps2-an386           ARM MPS2 with AN386 FPGA image for Cortex-M4
> mps2-an500           ARM MPS2 with AN500 FPGA image for Cortex-M7
> mps2-an505           ARM MPS2 with AN505 FPGA image for Cortex-M33
> mps2-an511           ARM MPS2 with AN511 DesignStart FPGA image for
> Cortex-M3
> mps2-an521           ARM MPS2 with AN521 FPGA image for dual Cortex-M33
> mps3-an524           ARM MPS3 with AN524 FPGA image for dual Cortex-M33
> mps3-an536           ARM MPS3 with AN536 FPGA image for Cortex-R52
> mps3-an547           ARM MPS3 with AN547 FPGA image for Cortex-M55
> mps3-an555           ARM MPS3 with AN555 FPGA image for Cortex-M85
> musca-a              ARM Musca-A board (dual Cortex-M33)
> musca-b1             ARM Musca-B1 board (dual Cortex-M33)
> netduino2            Netduino 2 Machine (Cortex-M3)
> netduinoplus2        Netduino Plus 2 Machine (Cortex-M4)
> none                 empty machine
> npcm750-evb          Nuvoton NPCM750 Evaluation Board (Cortex-A9)
> npcm845-evb          Nuvoton NPCM845 Evaluation Board (Cortex-A35)
> nuri                 Samsung NURI board (Exynos4210)
> olimex-stm32-h405    Olimex STM32-H405 (Cortex-M4)
> orangepi-pc          Orange Pi PC (Cortex-A7)
> palmetto-bmc         OpenPOWER Palmetto BMC (ARM926EJ-S)
> quanta-gbs-bmc       Quanta GBS (Cortex-A9)
> quanta-gsj           Quanta GSJ (Cortex-A9)
> quanta-q71l-bmc      Quanta-Q71l BMC (ARM926EJ-S)
> rainier-bmc          IBM Rainier BMC (Cortex-A7)
> raspi0               Raspberry Pi Zero (revision 1.2)
> raspi1ap             Raspberry Pi A+ (revision 1.1)
> raspi2b              Raspberry Pi 2B (revision 1.1)
> realview-eb          ARM RealView Emulation Baseboard (ARM926EJ-S)
> realview-eb-mpcore   ARM RealView Emulation Baseboard (ARM11MPCore)
> realview-pb-a8       ARM RealView Platform Baseboard for Cortex-A8
> realview-pbx-a9      ARM RealView Platform Baseboard Explore for Cortex-A9
> romulus-bmc          OpenPOWER Romulus BMC (ARM1176)
> sabrelite            Freescale i.MX6 Quad SABRE Lite Board (Cortex-A9)
> sbsa-ref             QEMU 'SBSA Reference' ARM Virtual Machine
> smdkc210             Samsung SMDKC210 board (Exynos4210)
> stm32vldiscovery     ST STM32VLDISCOVERY (Cortex-M3)
> supermicro-x11spi-bmc Supermicro X11 SPI BMC (ARM1176)
> supermicrox11-bmc    Supermicro X11 BMC (ARM926EJ-S)
> sx1                  Siemens SX1 (OMAP310) V2
> sx1-v1               Siemens SX1 (OMAP310) V1
> tiogapass-bmc        Facebook Tiogapass BMC (ARM1176)
> versatileab          ARM Versatile/AB (ARM926EJ-S)
> versatilepb          ARM Versatile/PB (ARM926EJ-S)
> vexpress-a15         ARM Versatile Express for Cortex-A15
> vexpress-a9          ARM Versatile Express for Cortex-A9
> virt-10.0            QEMU 10.0 ARM Virtual Machine
> virt-10.1            QEMU 10.1 ARM Virtual Machine
> virt-10.2            QEMU 10.2 ARM Virtual Machine
> virt-11.0            QEMU 11.0 ARM Virtual Machine
> virt-11.1            QEMU 11.1 ARM Virtual Machine
> virt                 QEMU 11.2 ARM Virtual Machine (alias of virt-11.2)
> virt-11.2            QEMU 11.2 ARM Virtual Machine
> virt-6.0             QEMU 6.0 ARM Virtual Machine (deprecated)
> virt-6.1             QEMU 6.1 ARM Virtual Machine (deprecated)
> virt-6.2             QEMU 6.2 ARM Virtual Machine (deprecated)
> virt-7.0             QEMU 7.0 ARM Virtual Machine (deprecated)
> virt-7.1             QEMU 7.1 ARM Virtual Machine (deprecated)
> virt-7.2             QEMU 7.2 ARM Virtual Machine (deprecated)
> virt-8.0             QEMU 8.0 ARM Virtual Machine (deprecated)
> virt-8.1             QEMU 8.1 ARM Virtual Machine (deprecated)
> virt-8.2             QEMU 8.2 ARM Virtual Machine (deprecated)
> virt-9.0             QEMU 9.0 ARM Virtual Machine
> virt-9.1             QEMU 9.1 ARM Virtual Machine
> virt-9.2             QEMU 9.2 ARM Virtual Machine
> witherspoon-bmc      OpenPOWER Witherspoon BMC (ARM1176)
> xilinx-zynq-a9       Xilinx Zynq 7000 Platform Baseboard for Cortex-A9
> xlnx-zcu102          Xilinx ZynqMP ZCU102 board with 4xA53s and 2xR5Fs
> based on the value of smp
> yosemitev2-bmc       Facebook YosemiteV2 BMC (ARM1176)
> 
> aarch64:
> ast2700a1-evb        Aspeed AST2700 A1 EVB (Cortex-A35)
> ast2700-evb          Aspeed AST2700 A2 EVB (Cortex-A35) (alias of
> ast2700a2-evb)
> ast2700a2-evb        Aspeed AST2700 A2 EVB (Cortex-A35)
> ast2700fc            ast2700 full core support
> raspi3ap             Raspberry Pi 3A+ (revision 1.0)
> raspi3b              Raspberry Pi 3B (revision 1.2)
> raspi4b              Raspberry Pi 4B (revision 1.5)
> 
> 
> riscv32:
> k230                 RISC-V Board compatible with Kendryte K230 SDK
> microchip-icicle-kit Microchip PolarFire SoC Icicle Kit
> opentitan            RISC-V Board compatible with OpenTitan
> shakti_c             RISC-V Board compatible with Shakti SDK (deprecated)
> sifive_e             RISC-V Board compatible with SiFive E SDK
> sifive_u             RISC-V Board compatible with SiFive U SDK
> spike                RISC-V Spike board
> tt-atlantis          Tenstorrent Atlantis RISC-V SoC (Experimental)
> virt                 RISC-V VirtIO board
> xiangshan-kunminghu  RISC-V Board compatible with the Xiangshan
> Kunminghu FPGA prototype platform
> 
> riscv64:
> k230                 RISC-V Board compatible with Kendryte K230 SDK
> microchip-icicle-kit Microchip PolarFire SoC Icicle Kit
> opentitan            RISC-V Board compatible with OpenTitan
> shakti_c             RISC-V Board compatible with Shakti SDK (deprecated)
> sifive_e             RISC-V Board compatible with SiFive E SDK
> sifive_u             RISC-V Board compatible with SiFive U SDK
> spike                RISC-V Spike board
> tt-atlantis          Tenstorrent Atlantis RISC-V SoC (Experimental)
> virt                 RISC-V VirtIO board
> xiangshan-kunminghu  RISC-V Board compatible with the Xiangshan
> Kunminghu FPGA prototype platform
> ```
> 
> --
>          此致
> 礼
> 罗勇刚
> Yours
>     sincerely,
> Yonggang Luo