From patchwork Tue Sep 6 09:02:19 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sunil V L X-Patchwork-Id: 12967183 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 45A4BC38145 for ; Tue, 6 Sep 2022 09:43:47 +0000 (UTC) Received: from localhost ([::1]:44010 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1oVV7S-0002u6-5O for qemu-devel@archiver.kernel.org; Tue, 06 Sep 2022 05:43:46 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:36962) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oVUTk-0001fk-8g for qemu-devel@nongnu.org; Tue, 06 Sep 2022 05:02:44 -0400 Received: from mail-pf1-x42f.google.com ([2607:f8b0:4864:20::42f]:40506) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1oVUTh-00019V-9q for qemu-devel@nongnu.org; Tue, 06 Sep 2022 05:02:42 -0400 Received: by mail-pf1-x42f.google.com with SMTP id b144so5919823pfb.7 for ; Tue, 06 Sep 2022 02:02:40 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ventanamicro.com; s=google; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date; bh=44Ji80GkoTkFbVPP3ShMaLLeSijFd9DLu55qjbCvEaU=; b=eBuS+S/n3Q2BFnV/b7eny2lU4mH5BjJQWdCtc9uw2Ak1oG40G4RdRYFo9z+yJTSjiU 52u21Zx/vEjb//OMtUwRGQxG8TSHEhSoK22SmV4J4hdQ+JIuJVLN0/AzZW/h1cylRVLL FpJbsDUWoiar0o3TAkwP0RACDxkWGisifY3YE0eeaBgOz9V3Jl7MYm2Dp3v7uUIvNcP4 KtJY+DdykYB9IUFJa3DwgEiVm/WLGsbuDnMNMfkYd4XjuFcGjqEC8iDkN0kg7o7evnpZ EvmAl6nCoDX2eB2PwQKD+KcB9TB488z83yhP8vGQgeBiSQcd09P/lym2mtpdXdpNZdur T2gA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date; bh=44Ji80GkoTkFbVPP3ShMaLLeSijFd9DLu55qjbCvEaU=; b=syFU1MgYP05/0/TlSbkxCCmUaBdrtXP6CGnVQHtKuCNGxtyAT31Fz3krIap3ZbH4ue hpYHGeezcCiawKlNFrNIhGp6spFlD2gxPUJ6KJeyyMRa2dW5er2rcIhkJCkX4hajrv8G t89p1OVAeXFOgpfD95037oTBKg+2Naly0oYJZ1QsY77Ucz0YNl47pTqWu80GAJcBw6RO +N28xub4Qx+sQWmAGaiVrE5dWzbs1C3Y6gVBMjB/7aeznXzvvQIkufFL48gGp3t0V/Qr On7fTMrEt8mf3AzpYxxDuS2OLQHI16Yko8f4rcYjIv6JlMH0LixFDMmRCVlsRF9erG0g tFtA== X-Gm-Message-State: ACgBeo0tCJUwX2+s0AWM8Vi+aowXPgrnTqZt4lKQUeB9oj+trIQ5+ipZ 5i7fjnDHl2zoxW0jdIybK+0X9w== X-Google-Smtp-Source: AA6agR7M5kIsyGtTrQwS6OVmepc7PqAngaHwT6AVrYL2QqO59okhQ6Z1MqG+MxZoXDfOeWjIVBrCig== X-Received: by 2002:aa7:8e4b:0:b0:535:da7c:c2d with SMTP id d11-20020aa78e4b000000b00535da7c0c2dmr53932531pfr.86.1662454959039; Tue, 06 Sep 2022 02:02:39 -0700 (PDT) Received: from localhost.localdomain ([49.206.11.92]) by smtp.gmail.com with ESMTPSA id t2-20020a17090a2f8200b001fabcd994c1sm11987315pjd.9.2022.09.06.02.02.35 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 06 Sep 2022 02:02:38 -0700 (PDT) From: Sunil V L To: qemu-arm@nongnu.org, qemu-devel@nongnu.org, qemu-riscv@nongnu.org Cc: Peter Maydell , Xiaojuan Yang , Song Gao , Gerd Hoffmann , Palmer Dabbelt , Alistair Francis , Bin Meng , Andrew Jones , Anup Patel , Atish Kumar Patra , =?utf-8?q?Philippe_Mathieu-Daud?= =?utf-8?q?=C3=A9?= , Sunil V L Subject: [PATCH V4 3/3] hw/riscv: virt: Enable booting S-mode firmware from pflash Date: Tue, 6 Sep 2022 14:32:19 +0530 Message-Id: <20220906090219.412517-4-sunilvl@ventanamicro.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220906090219.412517-1-sunilvl@ventanamicro.com> References: <20220906090219.412517-1-sunilvl@ventanamicro.com> MIME-Version: 1.0 Received-SPF: pass client-ip=2607:f8b0:4864:20::42f; envelope-from=sunilvl@ventanamicro.com; helo=mail-pf1-x42f.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=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" To boot S-mode firmware payload like EDK2 from persistent flash storage, qemu needs to pass the flash address as the next_addr in fw_dynamic_info to the opensbi. When both -kernel and -pflash options are provided in command line, the kernel (and initrd if -initrd) will be copied to fw_cfg table. The S-mode FW will load the kernel/initrd from fw_cfg table. If only pflash is given but not -kernel, then it is the job of of the S-mode firmware to locate and load the kernel. In either case, update the kernel_entry with the flash address so that the opensbi can jump to the entry point of the S-mode firmware. Signed-off-by: Sunil V L Reviewed-by: Andrew Jones --- hw/riscv/boot.c | 29 +++++++++++++++++++++++++++++ hw/riscv/virt.c | 18 +++++++++++++++++- include/hw/riscv/boot.h | 1 + 3 files changed, 47 insertions(+), 1 deletion(-) diff --git a/hw/riscv/boot.c b/hw/riscv/boot.c index 1ae7596873..fa8ad27da2 100644 --- a/hw/riscv/boot.c +++ b/hw/riscv/boot.c @@ -338,3 +338,32 @@ void riscv_setup_direct_kernel(hwaddr kernel_addr, hwaddr fdt_addr) riscv_cpu->env.fdt_addr = fdt_addr; } } + +void riscv_setup_firmware_boot(MachineState *machine) +{ + if (machine->kernel_filename) { + FWCfgState *fw_cfg; + fw_cfg = fw_cfg_find(); + + assert(fw_cfg); + /* + * Expose the kernel, the command line, and the initrd in fw_cfg. + * We don't process them here at all, it's all left to the + * firmware. + */ + load_image_to_fw_cfg(fw_cfg, + FW_CFG_KERNEL_SIZE, FW_CFG_KERNEL_DATA, + machine->kernel_filename, + true); + load_image_to_fw_cfg(fw_cfg, + FW_CFG_INITRD_SIZE, FW_CFG_INITRD_DATA, + machine->initrd_filename, false); + + if (machine->kernel_cmdline) { + fw_cfg_add_i32(fw_cfg, FW_CFG_CMDLINE_SIZE, + strlen(machine->kernel_cmdline) + 1); + fw_cfg_add_string(fw_cfg, FW_CFG_CMDLINE_DATA, + machine->kernel_cmdline); + } + } +} diff --git a/hw/riscv/virt.c b/hw/riscv/virt.c index b6bbf03f61..40515a793d 100644 --- a/hw/riscv/virt.c +++ b/hw/riscv/virt.c @@ -1258,7 +1258,23 @@ static void virt_machine_done(Notifier *notifier, void *data) s->fw_cfg = create_fw_cfg(machine); rom_set_fw(s->fw_cfg); - if (machine->kernel_filename) { + if (drive_get(IF_PFLASH, 0, 1)) { + /* + * S-mode FW like EDK2 will be kept in second plash (unit 1). + * When both kernel, initrd and pflash options are provided in the + * command line, the kernel and initrd will be copied to the fw_cfg + * table and opensbi will jump to the flash address which is the + * entry point of S-mode FW. It is the job of the S-mode FW to load + * the kernel and initrd using fw_cfg table. + * + * If only pflash is given but not -kernel, then it is the job of + * of the S-mode firmware to locate and load the kernel. + * In either case, the next_addr for opensbi will be the flash address. + */ + riscv_setup_firmware_boot(machine); + kernel_entry = virt_memmap[VIRT_FLASH].base + + virt_memmap[VIRT_FLASH].size / 2; + } else if (machine->kernel_filename) { kernel_start_addr = riscv_calc_kernel_start_addr(&s->soc[0], firmware_end_addr); diff --git a/include/hw/riscv/boot.h b/include/hw/riscv/boot.h index a36f7618f5..93e5f8760d 100644 --- a/include/hw/riscv/boot.h +++ b/include/hw/riscv/boot.h @@ -57,5 +57,6 @@ void riscv_rom_copy_firmware_info(MachineState *machine, hwaddr rom_base, uint32_t reset_vec_size, uint64_t kernel_entry); void riscv_setup_direct_kernel(hwaddr kernel_addr, hwaddr fdt_addr); +void riscv_setup_firmware_boot(MachineState *machine); #endif /* RISCV_BOOT_H */