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Date: Mon, 6 Jun 2022 16:14:46 -0700 Message-Id: <20220606231450.448443-40-richard.henderson@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220606231450.448443-1-richard.henderson@linaro.org> References: <20220606231450.448443-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::f32; envelope-from=richard.henderson@linaro.org; helo=mail-qv1-xf32.google.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, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham 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+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1654559851387100001 Content-Type: text/plain; charset="utf-8" From: Xiaojuan Yang Signed-off-by: Xiaojuan Yang Signed-off-by: Song Gao Reviewed-by: Richard Henderson Message-Id: <20220606124333.2060567-40-yangxiaojuan@loongson.cn> Signed-off-by: Richard Henderson --- target/loongarch/cpu.h | 2 ++ hw/loongarch/loongson3.c | 61 ++++++++++++++++++++++++++++++++++++++-- 2 files changed, 61 insertions(+), 2 deletions(-) diff --git a/target/loongarch/cpu.h b/target/loongarch/cpu.h index 03cc96ee9b..71a5036c3c 100644 --- a/target/loongarch/cpu.h +++ b/target/loongarch/cpu.h @@ -308,6 +308,8 @@ typedef struct CPUArchState { AddressSpace address_space_iocsr; MemoryRegion system_iocsr; MemoryRegion iocsr_mem; + bool load_elf; + uint64_t elf_address; } CPULoongArchState; =20 /** diff --git a/hw/loongarch/loongson3.c b/hw/loongarch/loongson3.c index 95984c9086..3c8fcb828c 100644 --- a/hw/loongarch/loongson3.c +++ b/hw/loongarch/loongson3.c @@ -19,6 +19,8 @@ #include "exec/address-spaces.h" #include "hw/irq.h" #include "net/net.h" +#include "hw/loader.h" +#include "elf.h" #include "hw/intc/loongarch_ipi.h" #include "hw/intc/loongarch_extioi.h" #include "hw/intc/loongarch_pch_pic.h" @@ -29,6 +31,36 @@ =20 #include "target/loongarch/cpu.h" =20 +static struct _loaderparams { + uint64_t ram_size; + const char *kernel_filename; +} loaderparams; + +static uint64_t cpu_loongarch_virt_to_phys(void *opaque, uint64_t addr) +{ + return addr & 0x1fffffffll; +} + +static int64_t load_kernel_info(void) +{ + uint64_t kernel_entry, kernel_low, kernel_high; + ssize_t kernel_size; + + kernel_size =3D load_elf(loaderparams.kernel_filename, NULL, + cpu_loongarch_virt_to_phys, NULL, + &kernel_entry, &kernel_low, + &kernel_high, NULL, 0, + EM_LOONGARCH, 1, 0); + + if (kernel_size < 0) { + error_report("could not load kernel '%s': %s", + loaderparams.kernel_filename, + load_elf_strerror(kernel_size)); + exit(1); + } + return kernel_entry; +} + static void loongarch_devices_init(DeviceState *pch_pic) { DeviceState *gpex_dev; @@ -200,15 +232,29 @@ static void loongarch_irq_init(LoongArchMachineState = *lams) loongarch_devices_init(pch_pic); } =20 +static void reset_load_elf(void *opaque) +{ + LoongArchCPU *cpu =3D opaque; + CPULoongArchState *env =3D &cpu->env; + + cpu_reset(CPU(cpu)); + if (env->load_elf) { + cpu_set_pc(CPU(cpu), env->elf_address); + } +} + static void loongarch_init(MachineState *machine) { const char *cpu_model =3D machine->cpu_type; + const char *kernel_filename =3D machine->kernel_filename; ram_addr_t offset =3D 0; ram_addr_t ram_size =3D machine->ram_size; uint64_t highram_size =3D 0; MemoryRegion *address_space_mem =3D get_system_memory(); LoongArchMachineState *lams =3D LOONGARCH_MACHINE(machine); + LoongArchCPU *lacpu; int i; + int64_t kernel_addr =3D 0; =20 if (!cpu_model) { cpu_model =3D LOONGARCH_CPU_TYPE_NAME("la464"); @@ -234,17 +280,28 @@ static void loongarch_init(MachineState *machine) machine->ram, 0, 256 * MiB); memory_region_add_subregion(address_space_mem, offset, &lams->lowmem); offset +=3D 256 * MiB; - highram_size =3D ram_size - 256 * MiB; memory_region_init_alias(&lams->highmem, NULL, "loongarch.highmem", machine->ram, offset, highram_size); memory_region_add_subregion(address_space_mem, 0x90000000, &lams->high= mem); - /* Add isa io region */ memory_region_init_alias(&lams->isa_io, NULL, "isa-io", get_system_io(), 0, LOONGARCH_ISA_IO_SIZE); memory_region_add_subregion(address_space_mem, LOONGARCH_ISA_IO_BASE, &lams->isa_io); + if (kernel_filename) { + loaderparams.ram_size =3D ram_size; + loaderparams.kernel_filename =3D kernel_filename; + kernel_addr =3D load_kernel_info(); + if (!machine->firmware) { + for (i =3D 0; i < machine->smp.cpus; i++) { + lacpu =3D LOONGARCH_CPU(qemu_get_cpu(i)); + lacpu->env.load_elf =3D true; + lacpu->env.elf_address =3D kernel_addr; + qemu_register_reset(reset_load_elf, lacpu); + } + } + } /* Initialize the IO interrupt subsystem */ loongarch_irq_init(lams); } --=20 2.34.1