From nobody Wed Feb 11 00:56:40 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 1645780861977815.8414752119864; Fri, 25 Feb 2022 01:21:01 -0800 (PST) Received: from localhost ([::1]:60010 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nNWma-0004l8-NS for importer@patchew.org; Fri, 25 Feb 2022 04:21:00 -0500 Received: from eggs.gnu.org ([209.51.188.92]:49268) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nNVhg-0003u8-9D for qemu-devel@nongnu.org; Fri, 25 Feb 2022 03:11:52 -0500 Received: from mail.loongson.cn ([114.242.206.163]:44660 helo=loongson.cn) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nNVha-0004gi-V1 for qemu-devel@nongnu.org; Fri, 25 Feb 2022 03:11:51 -0500 Received: from localhost.localdomain (unknown [10.2.5.185]) by mail.loongson.cn (Coremail) with SMTP id AQAAf9DxqMg8jRhiw9UGAA--.8228S27; Fri, 25 Feb 2022 16:03:23 +0800 (CST) From: Xiaojuan Yang To: qemu-devel@nongnu.org Subject: [RFC PATCH v6 25/29] hw/loongarch: Add -kernel and -initrd options support Date: Fri, 25 Feb 2022 03:03:04 -0500 Message-Id: <20220225080308.1405-26-yangxiaojuan@loongson.cn> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20220225080308.1405-1-yangxiaojuan@loongson.cn> References: <20220225080308.1405-1-yangxiaojuan@loongson.cn> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-CM-TRANSID: AQAAf9DxqMg8jRhiw9UGAA--.8228S27 X-Coremail-Antispam: 1UD129KBjvJXoWxGry8Cw47GF13uFyUZF4xWFg_yoWrCF1xpr Zxur1DGr4rAF93Aw12vas5uryrAw4DGF1agasxZr4FkFsFgr1UZw18Wr12vFWDKa95WF90 qrs8GrW29a4DJrJanT9S1TB71UUUUUUqnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 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, 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: , Cc: mark.cave-ayland@ilande.co.uk, richard.henderson@linaro.org, Song Gao Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZM-MESSAGEID: 1645780864263100001 Content-Type: text/plain; charset="utf-8" Signed-off-by: Xiaojuan Yang Signed-off-by: Song Gao --- hw/loongarch/loongson3.c | 81 ++++++++++++++++++++++++++++++++ include/hw/loongarch/loongarch.h | 5 ++ 2 files changed, 86 insertions(+) diff --git a/hw/loongarch/loongson3.c b/hw/loongarch/loongson3.c index 2795fcc895..9533057110 100644 --- a/hw/loongarch/loongson3.c +++ b/hw/loongarch/loongson3.c @@ -89,6 +89,76 @@ static void loongarch_cpu_set_irq(void *opaque, int irq,= int level) } } =20 +static struct _loaderparams { + unsigned long ram_size; + const char *kernel_filename; + const char *kernel_cmdline; + const char *initrd_filename; +} loaderparams; + +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 - initrd_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 loongarch_cpu_reset(void *opaque) { LoongArchCPU *cpu =3D opaque; @@ -325,6 +395,9 @@ static void loongarch_irq_init(LoongArchMachineState *l= ams, static void loongarch_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 *la_cpu; ipi =3D create_ipi(); extioi =3D create_extioi(); @@ -391,6 +464,14 @@ static void loongarch_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(&lams->bios, NULL, "loongarch.bios", LA_BIOS_SIZE, &error_fatal); memory_region_set_readonly(&lams->bios, true); diff --git a/include/hw/loongarch/loongarch.h b/include/hw/loongarch/loonga= rch.h index 44afb06b37..adb1ecd042 100644 --- a/include/hw/loongarch/loongarch.h +++ b/include/hw/loongarch/loongarch.h @@ -41,6 +41,11 @@ #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