From nobody Tue Feb 10 09:40:57 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1636596108559752.7650637828679; Wed, 10 Nov 2021 18:01:48 -0800 (PST) Received: from localhost ([::1]:35882 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mkzPP-0008JJ-ES for importer@patchew.org; Wed, 10 Nov 2021 21:01:47 -0500 Received: from eggs.gnu.org ([209.51.188.92]:54100) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mkz0v-0006c4-Sl for qemu-devel@nongnu.org; Wed, 10 Nov 2021 20:36:31 -0500 Received: from mail.loongson.cn ([114.242.206.163]:54320 helo=loongson.cn) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mkz0t-0001sS-UH for qemu-devel@nongnu.org; Wed, 10 Nov 2021 20:36:29 -0500 Received: from kvm-dev1.localdomain (unknown [10.2.5.134]) by mail.loongson.cn (Coremail) with SMTP id AQAAf9Dxr9Ngc4xh9RMCAA--.4955S28; Thu, 11 Nov 2021 09:36:14 +0800 (CST) From: Xiaojuan Yang To: qemu-devel@nongnu.org Subject: [RFC PATCH v2 26/30] hw/loongarch: Add -kernel and -initrd options support Date: Thu, 11 Nov 2021 09:35:24 +0800 Message-Id: <1636594528-8175-27-git-send-email-yangxiaojuan@loongson.cn> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1636594528-8175-1-git-send-email-yangxiaojuan@loongson.cn> References: <1636594528-8175-1-git-send-email-yangxiaojuan@loongson.cn> X-CM-TRANSID: AQAAf9Dxr9Ngc4xh9RMCAA--.4955S28 X-Coremail-Antispam: 1UD129KBjvJXoWxGryUCr1fWr17ZryUKF1Utrb_yoWrCFW8pr ZxZF1qgr4rAFWfAw12qFyrury5Aw4DG3Wag3Zxur1FqanFgr1UZw18Wr12vFWDGan5WF90 qrn0krW29a4DJ3DanT9S1TB71UUUUU7qnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnUUvcSsGvfC2KfnxnUUI43ZEXa7xR_UUUUUUUUU== X-CM-SenderInfo: p1dqw5xldry3tdq6z05rqj20fqof0/ 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=114.242.206.163; envelope-from=yangxiaojuan@loongson.cn; helo=loongson.cn X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 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: , Cc: Song Gao Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZM-MESSAGEID: 1636596109244100001 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Signed-off-by: Xiaojuan Yang Signed-off-by: Song Gao --- hw/loongarch/ls3a5000_virt.c | 81 ++++++++++++++++++++++++++++++++ include/hw/loongarch/loongarch.h | 5 ++ 2 files changed, 86 insertions(+) diff --git a/hw/loongarch/ls3a5000_virt.c b/hw/loongarch/ls3a5000_virt.c index 85c8466d75..902a0c7630 100644 --- a/hw/loongarch/ls3a5000_virt.c +++ b/hw/loongarch/ls3a5000_virt.c @@ -29,8 +29,78 @@ =20 #define LOONGSON3_BIOSNAME "loongarch_bios.bin" =20 +static struct _loaderparams { + unsigned long ram_size; + const char *kernel_filename; + const char *kernel_cmdline; + const char *initrd_filename; +} loaderparams; + CPULoongArchState *cpu_states[LOONGARCH_MAX_VCPUS]; =20 +static uint64_t cpu_loongarch_virt_to_phys(void *opaque, uint64_t addr) +{ + return addr & 0x1fffffffll; +} + +static void fw_cfg_add_kernel_info(FWCfgState *fw_cfg) +{ + int64_t kernel_entry, kernel_low, kernel_high, initrd_size =3D 0; + long kernel_size; + ram_addr_t initrd_offset =3D 0; + void *cmdline_buf; + int ret =3D 0; + + kernel_size =3D load_elf(loaderparams.kernel_filename, NULL, + cpu_loongarch_virt_to_phys, NULL, + (uint64_t *)&kernel_entry, (uint64_t *)&kernel_= low, + (uint64_t *)&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); + } + + fw_cfg_add_i64(fw_cfg, FW_CFG_KERNEL_ENTRY, kernel_entry); + + if (loaderparams.initrd_filename) { + initrd_size =3D get_image_size(loaderparams.initrd_filename); + + if (initrd_size > 0) { + initrd_offset =3D MAX(INITRD_BASE, + ROUND_UP(kernel_high, INITRD_PAGE_SIZE)); + if (initrd_offset + initrd_size > 0x10000000) { + error_report("ramdisk '%s' is too big", + loaderparams.initrd_filename); + exit(1); + } + initrd_size =3D load_image_targphys(loaderparams.initrd_filena= me, + initrd_offset, + loaderparams.ram_size - init= rd_offset); + } + if (initrd_size =3D=3D (target_ulong) -1) { + error_report("could not load initial ram disk '%s'", + loaderparams.initrd_filename); + exit(1); + } + } + + cmdline_buf =3D g_malloc0(COMMAND_LINE_SIZE); + if (initrd_size > 0) + ret =3D (1 + snprintf(cmdline_buf, COMMAND_LINE_SIZE, + "initrd=3D0x%lx,%li %s", initrd_offset, + initrd_size, loaderparams.kernel_cmdline)); + else + ret =3D (1 + snprintf(cmdline_buf, COMMAND_LINE_SIZE, "%s", + loaderparams.kernel_cmdline)); + + fw_cfg_add_i32(fw_cfg, FW_CFG_CMDLINE_SIZE, ret); + fw_cfg_add_string(fw_cfg, FW_CFG_CMDLINE_DATA, (const char *)cmdline_b= uf); +} + static void main_cpu_reset(void *opaque) { LoongArchCPU *cpu =3D opaque; @@ -198,6 +268,9 @@ static void network_init(PCIBus *pci_bus) static void ls3a5000_virt_init(MachineState *machine) { const char *cpu_model =3D machine->cpu_type; + const char *kernel_filename =3D machine->kernel_filename; + const char *kernel_cmdline =3D machine->kernel_cmdline; + const char *initrd_filename =3D machine->initrd_filename; LoongArchCPU *cpu; CPULoongArchState *env; uint64_t highram_size =3D 0; @@ -291,6 +364,14 @@ static void ls3a5000_virt_init(MachineState *machine) exit(1); } =20 + if (kernel_filename) { + loaderparams.ram_size =3D ram_size; + loaderparams.kernel_filename =3D kernel_filename; + loaderparams.kernel_cmdline =3D kernel_cmdline; + loaderparams.initrd_filename =3D initrd_filename; + fw_cfg_add_kernel_info(lams->fw_cfg); + } + memory_region_init_ram(bios, NULL, "loongarch.bios", LA_BIOS_SIZE, &error_fatal); memory_region_set_readonly(bios, true); diff --git a/include/hw/loongarch/loongarch.h b/include/hw/loongarch/loonga= rch.h index 2eb43e1263..dc7617ab64 100644 --- a/include/hw/loongarch/loongarch.h +++ b/include/hw/loongarch/loongarch.h @@ -37,6 +37,11 @@ #define LA_BIOS_BASE 0x1c000000 #define LA_BIOS_SIZE (4 * 1024 * 1024) =20 +/* Kernels can be configured with 64KB pages */ +#define INITRD_PAGE_SIZE (64 * KiB) +#define INITRD_BASE 0x04000000 +#define COMMAND_LINE_SIZE 4096 + typedef struct LoongArchMachineState { /*< private >*/ MachineState parent_obj; --=20 2.27.0