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([2a01:e0a:280:24f0:576b:abc6:6396:ed4a]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-45df8259d04sm15823165e9.23.2025.09.10.00.10.31 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 10 Sep 2025 00:10:31 -0700 (PDT) Message-ID: Date: Wed, 10 Sep 2025 09:10:30 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3 8/9] hw/ppc: Add a test machine for the IBM PPE42 CPU To: Glenn Miles , qemu-devel@nongnu.org Cc: qemu-ppc@nongnu.org, npiggin@gmail.com, harshpb@linux.ibm.com, thuth@redhat.com, rathc@linux.ibm.com, richard.henderson@linaro.org References: <20250908200028.115789-1-milesg@linux.ibm.com> <20250908200028.115789-9-milesg@linux.ibm.com> From: =?UTF-8?Q?C=C3=A9dric_Le_Goater?= Content-Language: en-US, fr Autocrypt: addr=clg@redhat.com; keydata= xsFNBFu8o3UBEADP+oJVJaWm5vzZa/iLgpBAuzxSmNYhURZH+guITvSySk30YWfLYGBWQgeo 8NzNXBY3cH7JX3/a0jzmhDc0U61qFxVgrPqs1PQOjp7yRSFuDAnjtRqNvWkvlnRWLFq4+U5t yzYe4SFMjFb6Oc0xkQmaK2flmiJNnnxPttYwKBPd98WfXMmjwAv7QfwW+OL3VlTPADgzkcqj 53bfZ4VblAQrq6Ctbtu7JuUGAxSIL3XqeQlAwwLTfFGrmpY7MroE7n9Rl+hy/kuIrb/TO8n0 ZxYXvvhT7OmRKvbYuc5Jze6o7op/bJHlufY+AquYQ4dPxjPPVUT/DLiUYJ3oVBWFYNbzfOrV RxEwNuRbycttMiZWxgflsQoHF06q/2l4ttS3zsV4TDZudMq0TbCH/uJFPFsbHUN91qwwaN/+ gy1j7o6aWMz+Ib3O9dK2M/j/O/Ube95mdCqN4N/uSnDlca3YDEWrV9jO1mUS/ndOkjxa34ia 70FjwiSQAsyIwqbRO3CGmiOJqDa9qNvd2TJgAaS2WCw/TlBALjVQ7AyoPEoBPj31K74Wc4GS Rm+FSch32ei61yFu6ACdZ12i5Edt+To+hkElzjt6db/UgRUeKfzlMB7PodK7o8NBD8outJGS tsL2GRX24QvvBuusJdMiLGpNz3uqyqwzC5w0Fd34E6G94806fwARAQABzSJDw6lkcmljIExl IEdvYXRlciA8Y2xnQHJlZGhhdC5jb20+wsGRBBMBCAA7FiEEoPZlSPBIlev+awtgUaNDx8/7 7KEFAmTLlVECGwMFCwkIBwICIgIGFQoJCAsCBBYCAwECHgcCF4AACgkQUaNDx8/77KG0eg// S0zIzTcxkrwJ/9XgdcvVTnXLVF9V4/tZPfB7sCp8rpDCEseU6O0TkOVFoGWM39sEMiQBSvyY lHrP7p7E/JYQNNLh441MfaX8RJ5Ul3btluLapm8oHp/vbHKV2IhLcpNCfAqaQKdfk8yazYhh EdxTBlzxPcu+78uE5fF4wusmtutK0JG0sAgq0mHFZX7qKG6LIbdLdaQalZ8CCFMKUhLptW71 xe+aNrn7hScBoOj2kTDRgf9CE7svmjGToJzUxgeh9mIkxAxTu7XU+8lmL28j2L5uNuDOq9vl hM30OT+pfHmyPLtLK8+GXfFDxjea5hZLF+2yolE/ATQFt9AmOmXC+YayrcO2ZvdnKExZS1o8 VUKpZgRnkwMUUReaF/mTauRQGLuS4lDcI4DrARPyLGNbvYlpmJWnGRWCDguQ/LBPpbG7djoy k3NlvoeA757c4DgCzggViqLm0Bae320qEc6z9o0X0ePqSU2f7vcuWN49Uhox5kM5L86DzjEQ RHXndoJkeL8LmHx8DM+kx4aZt0zVfCHwmKTkSTQoAQakLpLte7tWXIio9ZKhUGPv/eHxXEoS 0rOOAZ6np1U/xNR82QbF9qr9TrTVI3GtVe7Vxmff+qoSAxJiZQCo5kt0YlWwti2fFI4xvkOi V7lyhOA3+/3oRKpZYQ86Frlo61HU3r6d9wzOwU0EW7yjdQEQALyDNNMw/08/fsyWEWjfqVhW pOOrX2h+z4q0lOHkjxi/FRIRLfXeZjFfNQNLSoL8j1y2rQOs1j1g+NV3K5hrZYYcMs0xhmrZ KXAHjjDx7FW3sG3jcGjFW5Xk4olTrZwFsZVUcP8XZlArLmkAX3UyrrXEWPSBJCXxDIW1hzwp bV/nVbo/K9XBptT/wPd+RPiOTIIRptjypGY+S23HYBDND3mtfTz/uY0Jytaio9GETj+fFis6 TxFjjbZNUxKpwftu/4RimZ7qL+uM1rG1lLWc9SPtFxRQ8uLvLOUFB1AqHixBcx7LIXSKZEFU CSLB2AE4wXQkJbApye48qnZ09zc929df5gU6hjgqV9Gk1rIfHxvTsYltA1jWalySEScmr0iS YBZjw8Nbd7SxeomAxzBv2l1Fk8fPzR7M616dtb3Z3HLjyvwAwxtfGD7VnvINPbzyibbe9c6g LxYCr23c2Ry0UfFXh6UKD83d5ybqnXrEJ5n/t1+TLGCYGzF2erVYGkQrReJe8Mld3iGVldB7 JhuAU1+d88NS3aBpNF6TbGXqlXGF6Yua6n1cOY2Yb4lO/mDKgjXd3aviqlwVlodC8AwI0Sdu jWryzL5/AGEU2sIDQCHuv1QgzmKwhE58d475KdVX/3Vt5I9kTXpvEpfW18TjlFkdHGESM/Jx IqVsqvhAJkalABEBAAHCwV8EGAECAAkFAlu8o3UCGwwACgkQUaNDx8/77KEhwg//WqVopd5k 8hQb9VVdk6RQOCTfo6wHhEqgjbXQGlaxKHoXywEQBi8eULbeMQf5l4+tHJWBxswQ93IHBQjK yKyNr4FXseUI5O20XVNYDJZUrhA4yn0e/Af0IX25d94HXQ5sMTWr1qlSK6Zu79lbH3R57w9j hQm9emQEp785ui3A5U2Lqp6nWYWXz0eUZ0Tad2zC71Gg9VazU9MXyWn749s0nXbVLcLS0yop s302Gf3ZmtgfXTX/W+M25hiVRRKCH88yr6it+OMJBUndQVAA/fE9hYom6t/zqA248j0QAV/p LHH3hSirE1mv+7jpQnhMvatrwUpeXrOiEw1nHzWCqOJUZ4SY+HmGFW0YirWV2mYKoaGO2YBU wYF7O9TI3GEEgRMBIRT98fHa0NPwtlTktVISl73LpgVscdW8yg9Gc82oe8FzU1uHjU8b10lU XOMHpqDDEV9//r4ZhkKZ9C4O+YZcTFu+mvAY3GlqivBNkmYsHYSlFsbxc37E1HpTEaSWsGfA HQoPn9qrDJgsgcbBVc1gkUT6hnxShKPp4PlsZVMNjvPAnr5TEBgHkk54HQRhhwcYv1T2QumQ izDiU6iOrUzBThaMhZO3i927SG2DwWDVzZltKrCMD1aMPvb3NU8FOYRhNmIFR3fcalYr+9gD uVKe8BVz4atMOoktmt0GWTOC8P4= In-Reply-To: <20250908200028.115789-9-milesg@linux.ibm.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=170.10.129.124; envelope-from=clg@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, SPF_HELO_PASS=-0.001, T_SPF_TEMPERROR=0.01 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org On 9/8/25 22:00, Glenn Miles wrote: > Adds a test machine for the IBM PPE42 processor, including a > DEC, FIT, WDT and 512 KiB of ram. > > The purpose of this machine is only to provide a generic platform > for testing instructions of the recently added PPE42 processor > model which is used extensively in the IBM Power9, Power10 and > future Power server processors. > > Signed-off-by: Glenn Miles > --- > > Changes from v2: > - Moved decrementer changes to distinct commit > - Introduced a specific MachineState for the ppe42 Machine > - Use qdev_realize to create the machine > - Use valid_cpu_types to determine validity of CPU > - Changed machine ram limit from 2GB to 512KB > > MAINTAINERS | 6 +++ > hw/ppc/Kconfig | 9 ++++ > hw/ppc/meson.build | 2 + > hw/ppc/ppe42_machine.c | 102 +++++++++++++++++++++++++++++++++++++++++ > 4 files changed, 119 insertions(+) > create mode 100644 hw/ppc/ppe42_machine.c > > diff --git a/MAINTAINERS b/MAINTAINERS > index a07086ed76..52fa303e0a 100644 > --- a/MAINTAINERS > +++ b/MAINTAINERS > @@ -1531,6 +1531,12 @@ F: include/hw/pci-host/grackle.h > F: pc-bios/qemu_vga.ndrv > F: tests/functional/test_ppc_mac.py > > +PPE42 > +M: Glenn Miles > +L: qemu-ppc@nongnu.org > +S: Odd Fixes > +F: hw/ppc/ppe42_machine.c > + > PReP > M: Hervé Poussineau > L: qemu-ppc@nongnu.org > diff --git a/hw/ppc/Kconfig b/hw/ppc/Kconfig > index ced6bbc740..3fdea5919c 100644 > --- a/hw/ppc/Kconfig > +++ b/hw/ppc/Kconfig > @@ -44,6 +44,15 @@ config POWERNV > select SSI_M25P80 > select PNV_SPI > > +config PPC405 > + bool > + default y > + depends on PPC > + select M48T59 > + select PFLASH_CFI02 > + select PPC4XX > + select SERIAL Does the machine need all the above support ? > + > config PPC440 > bool > default y > diff --git a/hw/ppc/meson.build b/hw/ppc/meson.build > index 9893f8adeb..170b90ae7d 100644 > --- a/hw/ppc/meson.build > +++ b/hw/ppc/meson.build > @@ -57,6 +57,8 @@ ppc_ss.add(when: 'CONFIG_POWERNV', if_true: files( > 'pnv_n1_chiplet.c', > )) > # PowerPC 4xx boards > +ppc_ss.add(when: 'CONFIG_PPC405', if_true: files( > + 'ppe42_machine.c')) > ppc_ss.add(when: 'CONFIG_PPC440', if_true: files( > 'ppc440_bamboo.c', > 'ppc440_uc.c')) > diff --git a/hw/ppc/ppe42_machine.c b/hw/ppc/ppe42_machine.c > new file mode 100644 > index 0000000000..2cfce2503f > --- /dev/null > +++ b/hw/ppc/ppe42_machine.c > @@ -0,0 +1,102 @@ > +/* > + * Test Machine for the IBM PPE42 processor > + * > + * Copyright (c) 2025, IBM Corporation. > + * > + * SPDX-License-Identifier: GPL-2.0-or-later > + */ > + > +#include "qemu/osdep.h" > +#include "qemu/units.h" > +#include "qemu/error-report.h" > +#include "system/address-spaces.h" > +#include "hw/boards.h" > +#include "hw/ppc/ppc.h" > +#include "system/system.h" > +#include "system/reset.h" > +#include "system/kvm.h" > +#include "qapi/error.h" > + > +#define TYPE_PPE42_MACHINE MACHINE_TYPE_NAME("ppe42_machine") > +typedef MachineClass Ppe42MachineClass; > +typedef struct Ppe42MachineState Ppe42MachineState; > +DECLARE_OBJ_CHECKERS(Ppe42MachineState, Ppe42MachineClass, > + PPE42_MACHINE, TYPE_PPE42_MACHINE) > + > +struct Ppe42MachineState { > + MachineState parent_obj; > + > + PowerPCCPU cpu; > +}; > + > +static void main_cpu_reset(void *opaque) > +{ > + PowerPCCPU *cpu = opaque; > + > + cpu_reset(CPU(cpu)); > +} > + > +static void ppe42_machine_init(MachineState *machine) > +{ > + Ppe42MachineState *pms = PPE42_MACHINE(machine); > + PowerPCCPU *cpu = &pms->cpu; > + > + if (kvm_enabled()) { > + error_report("machine %s does not support the KVM accelerator", > + MACHINE_GET_CLASS(machine)->name); > + exit(EXIT_FAILURE); > + } > + > + /* init CPU */ > + object_initialize_child(OBJECT(pms), "cpu", cpu, machine->cpu_type); > + if (!qdev_realize(DEVICE(cpu), NULL, &error_fatal)) { > + return; > + } > + > + qemu_register_reset(main_cpu_reset, cpu); > + > + /* This sets the decrementer timebase */ > + ppc_booke_timers_init(cpu, 37500000, PPC_TIMER_PPE); > + > + /* RAM */ > + if (machine->ram_size > 512 * KiB) { > + error_report("RAM size more than 512 KiB is not supported"); > + exit(1); > + } In case of resend, the RAM size could be tested sooner (after kvm_enabled()). > + memory_region_add_subregion(get_system_memory(), 0xfff80000, machine->ram); > +} > + > + > +static void ppe42_machine_class_init(ObjectClass *oc, const void *data) > +{ > + MachineClass *mc = MACHINE_CLASS(oc); > + static const char * const valid_cpu_types[] = { > + POWERPC_CPU_TYPE_NAME("PPE42"), > + POWERPC_CPU_TYPE_NAME("PPE42X"), > + POWERPC_CPU_TYPE_NAME("PPE42XM"), > + NULL, > + }; > + > + mc->desc = "PPE42 Test Machine"; > + mc->init = ppe42_machine_init; > + mc->default_cpu_type = POWERPC_CPU_TYPE_NAME("PPE42XM"); > + mc->valid_cpu_types = valid_cpu_types; > + mc->default_ram_id = "ram"; > + mc->default_ram_size = 512 * KiB; > +} > + > +static const TypeInfo ppe42_machine_info = { > + .name = TYPE_PPE42_MACHINE, > + .parent = TYPE_MACHINE, > + .instance_size = sizeof(Ppe42MachineState), > + .class_init = ppe42_machine_class_init, > + .class_size = sizeof(Ppe42MachineClass), > +}; > + > +static void ppe42_machine_register_types(void) > +{ > + type_register_static(&ppe42_machine_info); > +} > + > +type_init(ppe42_machine_register_types); > + Reviewed-by: Cédric Le Goater Thanks, C.