From patchwork Thu Mar 14 11:04:56 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: bence.balogh@arm.com X-Patchwork-Id: 40977 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 aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id EEDE3C54E68 for ; Thu, 14 Mar 2024 11:05:15 +0000 (UTC) Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by mx.groups.io with SMTP id smtpd.web11.9855.1710414309853254821 for ; Thu, 14 Mar 2024 04:05:10 -0700 Authentication-Results: mx.groups.io; dkim=none (message not signed); spf=pass (domain: arm.com, ip: 217.140.110.172, mailfrom: bence.balogh@arm.com) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 96726DA7; Thu, 14 Mar 2024 04:05:45 -0700 (PDT) Received: from e126523.arm.com (unknown [10.57.81.164]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 837F83F73F; Thu, 14 Mar 2024 04:05:08 -0700 (PDT) From: bence.balogh@arm.com To: meta-arm@lists.yoctoproject.org Cc: Bence Balogh Subject: [PATCH v2 1/2] arm-bsp/u-boot: corstone1000: fix SMCCC_ARCH_FEATURES detection in the PSCI driver Date: Thu, 14 Mar 2024 12:04:56 +0100 Message-Id: <20240314110457.230569-2-bence.balogh@arm.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20240314110457.230569-1-bence.balogh@arm.com> References: <20240314110457.230569-1-bence.balogh@arm.com> MIME-Version: 1.0 List-Id: X-Webhook-Received: from li982-79.members.linode.com [45.33.32.79] by aws-us-west-2-korg-lkml-1.web.codeaurora.org with HTTPS for ; Thu, 14 Mar 2024 11:05:15 -0000 X-Groupsio-URL: https://lists.yoctoproject.org/g/meta-arm/message/5439 From: Bence Balogh The u-boot PSCI driver was not compliant with the PSCI specifications so this patch had to be added. Signed-off-by: Bence Balogh --- .../u-boot/u-boot-corstone1000.inc | 1 + ...i-Fix-bind_smccc_features-psci-check.patch | 60 +++++++++++++++++++ 2 files changed, 61 insertions(+) create mode 100644 meta-arm-bsp/recipes-bsp/u-boot/u-boot/corstone1000/0043-firmware-psci-Fix-bind_smccc_features-psci-check.patch diff --git a/meta-arm-bsp/recipes-bsp/u-boot/u-boot-corstone1000.inc b/meta-arm-bsp/recipes-bsp/u-boot/u-boot-corstone1000.inc index 2585ff25..c7172d6f 100644 --- a/meta-arm-bsp/recipes-bsp/u-boot/u-boot-corstone1000.inc +++ b/meta-arm-bsp/recipes-bsp/u-boot/u-boot-corstone1000.inc @@ -58,6 +58,7 @@ SRC_URI:append = " \ file://0040-fix-runtime-capsule-update-flags-checks.patch \ file://0041-scatter-gather-flag-workaround.patch \ file://0042-corstone1000-enable-virtio-net-support.patch \ + file://0043-firmware-psci-Fix-bind_smccc_features-psci-check.patch \ " do_configure:append() { diff --git a/meta-arm-bsp/recipes-bsp/u-boot/u-boot/corstone1000/0043-firmware-psci-Fix-bind_smccc_features-psci-check.patch b/meta-arm-bsp/recipes-bsp/u-boot/u-boot/corstone1000/0043-firmware-psci-Fix-bind_smccc_features-psci-check.patch new file mode 100644 index 00000000..70d684b5 --- /dev/null +++ b/meta-arm-bsp/recipes-bsp/u-boot/u-boot/corstone1000/0043-firmware-psci-Fix-bind_smccc_features-psci-check.patch @@ -0,0 +1,60 @@ +Subject: [PATCH v4 1/3] firmware: psci: Fix bind_smccc_features psci check +Date: Mon, 4 Mar 2024 14:42:40 +0000 [thread overview] +Message-ID: <20240304144242.11666-2-o451686892@gmail.com> (raw) +In-Reply-To: <20240304144242.11666-1-o451686892@gmail.com> + +According to PSCI specification DEN0022F, PSCI_FEATURES is used to check +whether the SMCCC is implemented by discovering SMCCC_VERSION. + +Signed-off-by: Weizhao Ouyang +Signed-off-by: Bence Balogh +Upstream-Status: Submitted [https://lore.kernel.org/all/20240304144242.11666-2-o451686892@gmail.com/] +--- +v3: remove fallback smc call +v2: check SMCCC_ARCH_FEATURES +--- + drivers/firmware/psci.c | 5 ++++- + include/linux/arm-smccc.h | 6 ++++++ + 2 files changed, 10 insertions(+), 1 deletion(-) + +diff --git a/drivers/firmware/psci.c b/drivers/firmware/psci.c +index c6b9efab41..03544d76ed 100644 +--- a/drivers/firmware/psci.c ++++ b/drivers/firmware/psci.c +@@ -135,10 +135,13 @@ static int bind_smccc_features(struct udevice *dev, int psci_method) + PSCI_VERSION_MAJOR(psci_0_2_get_version()) == 0) + return 0; + +- if (request_psci_features(ARM_SMCCC_ARCH_FEATURES) == ++ if (request_psci_features(ARM_SMCCC_VERSION) == + PSCI_RET_NOT_SUPPORTED) + return 0; + ++ if (invoke_psci_fn(ARM_SMCCC_VERSION, 0, 0, 0) < ARM_SMCCC_VERSION_1_1) ++ return 0; ++ + if (psci_method == PSCI_METHOD_HVC) + pdata->invoke_fn = smccc_invoke_hvc; + else +diff --git a/include/linux/arm-smccc.h b/include/linux/arm-smccc.h +index f44e9e8f93..da3d29aabe 100644 +--- a/include/linux/arm-smccc.h ++++ b/include/linux/arm-smccc.h +@@ -55,8 +55,14 @@ + #define ARM_SMCCC_QUIRK_NONE 0 + #define ARM_SMCCC_QUIRK_QCOM_A6 1 /* Save/restore register a6 */ + ++#define ARM_SMCCC_VERSION 0x80000000 + #define ARM_SMCCC_ARCH_FEATURES 0x80000001 + ++#define ARM_SMCCC_VERSION_1_0 0x10000 ++#define ARM_SMCCC_VERSION_1_1 0x10001 ++#define ARM_SMCCC_VERSION_1_2 0x10002 ++#define ARM_SMCCC_VERSION_1_3 0x10003 ++ + #define ARM_SMCCC_RET_NOT_SUPPORTED ((unsigned long)-1) + + #ifndef __ASSEMBLY__ +-- +2.40.1 +