From mboxrd@z Thu Jan 1 00:00:00 1970 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 60D5FC433EF for ; Thu, 19 May 2022 05:15:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233901AbiESFPY (ORCPT ); Thu, 19 May 2022 01:15:24 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51996 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233006AbiESFPW (ORCPT ); Thu, 19 May 2022 01:15:22 -0400 Received: from mail-pg1-x52d.google.com (mail-pg1-x52d.google.com [IPv6:2607:f8b0:4864:20::52d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A463294195 for ; Wed, 18 May 2022 22:15:21 -0700 (PDT) Received: by mail-pg1-x52d.google.com with SMTP id q76so4050871pgq.10 for ; Wed, 18 May 2022 22:15:21 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ventanamicro.com; s=google; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=FnRdlHrEla6Dyd7Er3np/FEhy1piZaEXssJQV5c0vBg=; b=X7PIGUbjsnX+9thxa6uAkZM4MwFqyfuO4+IGUv2xRCyk5KRtzRZXdWCZ/en+OvmeqJ GfV655FXoVrgKNk6QgccY0PhQvGiTmcaWuXE/KRNvfc984v2kPu1yCJOXvWzchYyx6PB mhZ+1pMW0w3QdGDGh5Be9vxSsEwiRrn6rcffLyQv/68t++moJQZ86Mv9QD8YlP094BVq PO48tBY1ruxvX0shzKumY9T4woWYVg/co4PnQ5yycMkyiCujBG6b3vF1EdIuCXTZ1BJf Z0z5dIcQfRyVOgxgGeAnDP8BHaIzCS0UbXRKpervsgpiTzCvLb7ZYq8MuAHoOmObxp4m CK8g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=FnRdlHrEla6Dyd7Er3np/FEhy1piZaEXssJQV5c0vBg=; b=2xKbiVCPtcGvw9+BnWyciq8cGxruK1UvM2i6mt/d9+ODhGAITsbJQ38KxjmEDzTkvY YecuwdeDPWNJ0m2Oqb7P7iIRuIPW6eyGGer5eVZ4aMEXK51GVQHGZ2b0muOVKvgbePNc VdEIYum/Wzb+8jsTv7arQ9TIJL25g95AFjmbpUTqADi6zGIk/2L3LHDcquu8tQLBt49i BizKGAk57f838C4J/1BJBvSPHxQNm9wH3g127oBuj4dNSCSq88C5Uz1S5tkTgGkPR9IA wU5hh81X4GW6j982AXXbvrTzWQx0YiZxFRStL/sMTQ5q8l1p1lSmOIT90ngwQAZ16zk2 ovPQ== X-Gm-Message-State: AOAM533MGUsuAdvok1z0xlBceZ31UOzWG1jk8Z2j4qKVzry3xOiGMsJn YlMDC2WTt7MganSef2EwDxixFpkBBmsjgjjq X-Google-Smtp-Source: ABdhPJyfsA7vHd6Skw4UKaV0vjCh4Vet52VObBCGk1xXZ8PdZ5VGQsKj41jCUnIXPgWRqs2DXVr8lw== X-Received: by 2002:a05:6a00:24c1:b0:50d:33cf:811f with SMTP id d1-20020a056a0024c100b0050d33cf811fmr3177502pfv.78.1652937321167; Wed, 18 May 2022 22:15:21 -0700 (PDT) Received: from kerodipc.Dlink ([49.206.10.235]) by smtp.gmail.com with ESMTPSA id j19-20020a056a00235300b0050dc76281a3sm2929007pfj.125.2022.05.18.22.15.16 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 18 May 2022 22:15:20 -0700 (PDT) From: Sunil V L To: Ard Biesheuvel , Paul Walmsley , Palmer Dabbelt , Albert Ou , Ilias Apalodimas Cc: Heinrich Schuchardt , Atish Patra , Anup Patel , Jessica Clarke , Abner Chang , linux-efi@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, Sunil V L , Palmer Dabbelt , Sunil V L Subject: [PATCH V5 0/1] RISCV_EFI_BOOT_PROTOCOL support in linux Date: Thu, 19 May 2022 10:45:11 +0530 Message-Id: <20220519051512.136724-1-sunilvl@ventanamicro.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch adds support for getting the boot hart ID using new RISCV_EFI_BOOT_PROTOCOL in linux efi stub. While there is an existing solution of passing the boot hart ID through Device Tree, it doesn't work for ACPI. Hence an EFI protocol protocol is recommended which works for both DT and ACPI based platforms. The spec of this new protocol post public review (Ratification-ready) is available at: https://github.com/riscv-non-isa/riscv-uefi/releases/download/1.0.0/RISCV_UEFI_PROTOCOL-spec.pdf This is tested in qemu with both u-boot and edk2. Changes since V4: - Changed data type of hartid to unsigned long - Updated jump_kernel_func() to take unsigned long for hartid Changes since V3: - Rebased, no code changes. - cover letter updated with link to spec version after public review Changes since V2: - Updated error message Changes since V1: - Rebased to get the "Fix get_boot_hartid_from_fdt() return value" patch - Removed mixed_mode member - Separated return value and status. Sunil V L (1): riscv/efi_stub: Add support for RISCV_EFI_BOOT_PROTOCOL drivers/firmware/efi/libstub/efistub.h | 7 +++++ drivers/firmware/efi/libstub/riscv-stub.c | 31 ++++++++++++++++++----- include/linux/efi.h | 1 + 3 files changed, 33 insertions(+), 6 deletions(-) -- 2.25.1