From patchwork Tue Dec 15 15:56:21 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nicolas Saenz Julienne X-Patchwork-Id: 11975081 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E8EF4C2BB48 for ; Tue, 15 Dec 2020 15:58:12 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 9F1D1224F4 for ; Tue, 15 Dec 2020 15:58:12 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 9F1D1224F4 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=suse.de Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To:Message-Id:Date: Subject:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=E+U6CW/y9oUQ1pWVj0AhuFwgjSv6zqUV5AZn5BMNIP0=; b=oVqfKWAwqBz0jU0AStZsBHmLU I9a/9DoSReQtC2m/mHhfMJj74Lm7AaHFYranYHqd6m7tzoskRKoeY5+npI3gHNAsupOtC4lAf9XIh pvPYRUndhnAbXks4LHMQL47DV2ZslVFmFzlBO//XHNMI6gMbSRAe++FqPXDqqTd9OOMn94m/Fx2Ky Pdg3CbKJv4ZInaJxSUCDavpXP5cMyYOFKU+zlAyAIgH+EJZBTlkdEfDLBhKM4O7hK+ytCTK9mKT+4 2bknhhXQtuDjnFK5PWZe/ddjvVDPRLQARH3RM5kzhqroFAvxfC4sRt+21lpRBEokpHSnkx2EHWutq rICTvXbWA==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kpCh4-0004b8-W2; Tue, 15 Dec 2020 15:56:55 +0000 Received: from mx2.suse.de ([195.135.220.15]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1kpCgt-0004Vm-AW; Tue, 15 Dec 2020 15:56:44 +0000 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 352ECACF9; Tue, 15 Dec 2020 15:56:41 +0000 (UTC) From: Nicolas Saenz Julienne To: srinivas.kandagatla@linaro.org, Saenz Julienne , devicetree@vger.kernel.org, bcm-kernel-feedback-list@broadcom.com, linux-rpi-kernel@lists.infradead.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH 1/6] dt-bindings: nvmem: Add bindings for rmem driver Date: Tue, 15 Dec 2020 16:56:21 +0100 Message-Id: <20201215155627.2513-2-nsaenzjulienne@suse.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20201215155627.2513-1-nsaenzjulienne@suse.de> References: <20201215155627.2513-1-nsaenzjulienne@suse.de> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20201215_105643_489827_190CF4E1 X-CRM114-Status: GOOD ( 15.09 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: tim.gover@raspberrypi.com, catalin.marinas@arm.com, linux-kernel@vger.kernel.org, linux@armlinux.org.uk, robh+dt@kernel.org, will@kernel.org, phil@raspberrypi.com Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Firmware/co-processors might use reserved memory areas in order to pass data stemming from an nvmem device otherwise non accessible to Linux. For example an EEPROM memory only physically accessible to firmware, or data only accessible early at boot time. Introduce the dt-bindings to nvmem's rmem. Signed-off-by: Nicolas Saenz Julienne --- .../devicetree/bindings/nvmem/rmem.yaml | 35 +++++++++++++++++++ 1 file changed, 35 insertions(+) create mode 100644 Documentation/devicetree/bindings/nvmem/rmem.yaml diff --git a/Documentation/devicetree/bindings/nvmem/rmem.yaml b/Documentation/devicetree/bindings/nvmem/rmem.yaml new file mode 100644 index 000000000000..3037ebc4634d --- /dev/null +++ b/Documentation/devicetree/bindings/nvmem/rmem.yaml @@ -0,0 +1,35 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/nvmem/rmem.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Reserved Memory Based nvmem Device + +maintainers: + - Nicolas Saenz Julienne + +properties: + compatible: + enum: + - nvmem-rmem + + memory-region: + $ref: /schemas/types.yaml#/definitions/phandle + description: + phandle to the reserved memory region + +required: + - compatible + - memory-region + +additionalProperties: false + +examples: + - | + fw-config { + compatible = "nvmem-rmem"; + memory-region = <&mem>; + }; + +... From patchwork Tue Dec 15 15:56:22 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nicolas Saenz Julienne X-Patchwork-Id: 11975085 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 658F7C2BB9A for ; Tue, 15 Dec 2020 15:58:22 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 19926225A9 for ; Tue, 15 Dec 2020 15:58:22 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 19926225A9 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=suse.de Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To:Message-Id:Date: Subject:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=zI1HIIGQNSgoi79QCfHMOi2xZKI1Ui6WVPQUBycNSjE=; b=dO//FnHlxTz86du6PzDeAHH1R w3L5+voESaSM3QAFeuryQKSvqIsFAlM54BninPQYZ+0fYSTZOXPUcv4fvFsB287DRdt3phjgAj4CR bDrXTNaStThhmkit1DNc5YhpZqErIben10/eOOsjMyAUb8eILVT3bZnYTFIhVmhPuFgAyQo5ehA8p Fm6ZktQ3tsVm5L5YQN0iX0viV2ZINeQXgH+Acs1PpDUTeyV/QS6iPlq8Z7mdfl1v7yiyEUyTZagCY doR7UwSI0muR0EpOOwWYm2BetLIrcJveInAi94rstrFbWNVu6RlCaLYDhmN7sZa5Re3aGwOe05oJN dmrn/bM8g==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kpChA-0004cD-48; Tue, 15 Dec 2020 15:57:00 +0000 Received: from mx2.suse.de ([195.135.220.15]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1kpCgt-0004WL-8R; Tue, 15 Dec 2020 15:56:45 +0000 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 532BFAD0E; Tue, 15 Dec 2020 15:56:42 +0000 (UTC) From: Nicolas Saenz Julienne To: srinivas.kandagatla@linaro.org, Saenz Julienne , devicetree@vger.kernel.org, bcm-kernel-feedback-list@broadcom.com, linux-rpi-kernel@lists.infradead.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH 2/6] nvmem: Add driver to expose reserved memory as nvmem Date: Tue, 15 Dec 2020 16:56:22 +0100 Message-Id: <20201215155627.2513-3-nsaenzjulienne@suse.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20201215155627.2513-1-nsaenzjulienne@suse.de> References: <20201215155627.2513-1-nsaenzjulienne@suse.de> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20201215_105643_548484_0E44CC34 X-CRM114-Status: GOOD ( 23.14 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: tim.gover@raspberrypi.com, catalin.marinas@arm.com, linux-kernel@vger.kernel.org, linux@armlinux.org.uk, robh+dt@kernel.org, will@kernel.org, phil@raspberrypi.com Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Firmware/co-processors might use reserved memory areas in order to pass data stemming from an nvmem device otherwise non accessible to Linux. For example an EEPROM memory only physically accessible to firmware, or data only accessible early at boot time. In order to expose this data to other drivers and user-space, the driver models the reserved memory area as an nvmem device. Signed-off-by: Nicolas Saenz Julienne --- drivers/nvmem/Kconfig | 8 ++++ drivers/nvmem/Makefile | 2 + drivers/nvmem/rmem.c | 92 ++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 102 insertions(+) create mode 100644 drivers/nvmem/rmem.c diff --git a/drivers/nvmem/Kconfig b/drivers/nvmem/Kconfig index 954d3b4a52ab..fecc19b884bf 100644 --- a/drivers/nvmem/Kconfig +++ b/drivers/nvmem/Kconfig @@ -270,4 +270,12 @@ config SPRD_EFUSE This driver can also be built as a module. If so, the module will be called nvmem-sprd-efuse. +config NVMEM_RMEM + tristate "Reserved Memory Based Driver Support" + help + This drivers maps reserved memory into an nvmem device. It might be + useful to expose information left by firmware in memory. + + This driver can also be built as a module. If so, the module + will be called nvmem-rmem. endif diff --git a/drivers/nvmem/Makefile b/drivers/nvmem/Makefile index a7c377218341..5376b8e0dae5 100644 --- a/drivers/nvmem/Makefile +++ b/drivers/nvmem/Makefile @@ -55,3 +55,5 @@ obj-$(CONFIG_NVMEM_ZYNQMP) += nvmem_zynqmp_nvmem.o nvmem_zynqmp_nvmem-y := zynqmp_nvmem.o obj-$(CONFIG_SPRD_EFUSE) += nvmem_sprd_efuse.o nvmem_sprd_efuse-y := sprd-efuse.o +obj-$(CONFIG_NVMEM_RMEM) += nvmem-rmem.o +nvmem-rmem-y := rmem.o diff --git a/drivers/nvmem/rmem.c b/drivers/nvmem/rmem.c new file mode 100644 index 000000000000..d4fb36db0644 --- /dev/null +++ b/drivers/nvmem/rmem.c @@ -0,0 +1,92 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2020 Nicolas Saenz Julienne + */ + +#include +#include +#include +#include +#include + +struct rmem { + struct device *dev; + struct nvmem_device *nvmem; + struct reserved_mem *rmem; + + const void *base; + phys_addr_t size; +}; + +static int rmem_read(void *context, unsigned int offset, + void *val, size_t bytes) +{ + struct rmem *priv = context; + loff_t off = offset; + + return memory_read_from_buffer(val, bytes, &off, priv->base, priv->size); +} + +static int rmem_probe(struct platform_device *pdev) +{ + struct nvmem_config config = { }; + struct device *dev = &pdev->dev; + struct device_node *rmem_np; + struct reserved_mem *rmem; + struct rmem *priv; + + priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + priv->dev = dev; + + rmem_np = of_parse_phandle(dev->of_node, "memory-region", 0); + if (!rmem_np) { + dev_err(dev, "Failed to lookup reserved memory phandle\n"); + return -EINVAL; + } + + rmem = of_reserved_mem_lookup(rmem_np); + of_node_put(rmem_np); + if (!rmem) { + dev_err(dev, "Failed to lookup reserved memory\n"); + return -EINVAL; + } + + priv->rmem = rmem; + priv->size = rmem->size; + + priv->base = devm_memremap(dev, rmem->base, rmem->size, MEMREMAP_WB); + if (IS_ERR(priv->base)) { + dev_err(dev, "Failed to remap memory region\n"); + return PTR_ERR(priv->base); + } + + config.dev = dev; + config.priv = priv; + config.name = "rmem"; + config.size = priv->size; + config.reg_read = rmem_read; + + priv->nvmem = devm_nvmem_register(dev, &config); + return PTR_ERR_OR_ZERO(priv->nvmem); +} + +static const struct of_device_id rmem_match[] = { + { .compatible = "nvmem-rmem", }, + { /* sentinel */ }, +}; +MODULE_DEVICE_TABLE(of, rmem_match); + +static struct platform_driver rmem_driver = { + .probe = rmem_probe, + .driver = { + .name = "rmem", + .of_match_table = rmem_match, + }, +}; +module_platform_driver(rmem_driver); + +MODULE_AUTHOR("Nicolas Saenz Julienne "); +MODULE_DESCRIPTION("Reserved Memory Based nvmem Driver"); +MODULE_LICENSE("GPL"); From patchwork Tue Dec 15 15:56:23 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nicolas Saenz Julienne X-Patchwork-Id: 11975083 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8B88CC4361B for ; Tue, 15 Dec 2020 15:58:18 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 3B9AC224F4 for ; Tue, 15 Dec 2020 15:58:18 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 3B9AC224F4 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=suse.de Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To:Message-Id:Date: Subject:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=FvUhq6Zxn9VibAJAGpaadoSqDPe9A+gNeFMn3bWAeJc=; b=WxeJPxavn1cLv7CmFh7ZHlb74 Dx/FNG+ckNtbSw8Xa8SKeERvx0eGEmU/irZv0RuwVmxgur5Aha9QUwBGkQfAiR6xJrf58USmo+nfL rjD2H8UoY68W99MDK6PduJT/FZwh/V4ydfCARRf+1dO/B7lcvpqoe1aQbCdEstDxQdkAtu4Yn/hr5 nZjC1/8fPmkwxWosYVP5v4b0WNG+GbMmcv9KnpDOHufcnhJ/SSGv8GiKLx5m/Ke4wc3EiJDHSTVdX mIlcTwBT93kW7K8RggV9QY+J9Cbmy5GlNrIO6SZ6vCckrbFAmxtwLNEhKpt1pf0u+GKntf3stk+qE a7HlahqpQ==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kpChG-0004dh-8S; Tue, 15 Dec 2020 15:57:06 +0000 Received: from mx2.suse.de ([195.135.220.15]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1kpCgu-0004Wo-7D; Tue, 15 Dec 2020 15:56:45 +0000 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 2EB33AD43; Tue, 15 Dec 2020 15:56:43 +0000 (UTC) From: Nicolas Saenz Julienne To: srinivas.kandagatla@linaro.org, Saenz Julienne , devicetree@vger.kernel.org, bcm-kernel-feedback-list@broadcom.com, linux-rpi-kernel@lists.infradead.org, linux-arm-kernel@lists.infradead.org, Rob Herring Subject: [PATCH 3/6] ARM: dts: bcm2711: Add reserved memory template to hold firmware configuration Date: Tue, 15 Dec 2020 16:56:23 +0100 Message-Id: <20201215155627.2513-4-nsaenzjulienne@suse.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20201215155627.2513-1-nsaenzjulienne@suse.de> References: <20201215155627.2513-1-nsaenzjulienne@suse.de> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20201215_105644_433938_48077F66 X-CRM114-Status: GOOD ( 14.31 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: tim.gover@raspberrypi.com, catalin.marinas@arm.com, linux-kernel@vger.kernel.org, linux@armlinux.org.uk, will@kernel.org, phil@raspberrypi.com Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org RPi4's co-processor will copy the board's bootloader configuration into memory for the OS to consume. Introduce a reserved-memory area template for the co-processor to edit before booting the system so as for Linux not to overwrite that memory. Signed-off-by: Nicolas Saenz Julienne --- arch/arm/boot/dts/bcm2711-rpi-4-b.dts | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/arch/arm/boot/dts/bcm2711-rpi-4-b.dts b/arch/arm/boot/dts/bcm2711-rpi-4-b.dts index 403bacf986eb..c58e58e8ce39 100644 --- a/arch/arm/boot/dts/bcm2711-rpi-4-b.dts +++ b/arch/arm/boot/dts/bcm2711-rpi-4-b.dts @@ -25,6 +25,7 @@ aliases { emmc2bus = &emmc2bus; ethernet0 = &genet; pcie0 = &pcie0; + eeprom = &eeprom; }; leds { @@ -218,6 +219,19 @@ &pwm1 { status = "okay"; }; +&rmem { + /* + * RPi4's co-processor will copy the board's bootloader configuration + * into memory for the OS to consume. It'll also update this node with + * its placement information. + */ + eeprom: eeprom@0 { + reg = <0x0 0x0 0x0>; + no-map; + status = "disabled"; + }; +}; + /* SDHCI is used to control the SDIO for wireless */ &sdhci { #address-cells = <1>; From patchwork Tue Dec 15 15:56:24 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nicolas Saenz Julienne X-Patchwork-Id: 11975087 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id EBEA6C4361B for ; Tue, 15 Dec 2020 15:58:26 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id A84E5224F4 for ; Tue, 15 Dec 2020 15:58:26 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A84E5224F4 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=suse.de Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To:Message-Id:Date: Subject:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=Z3rb2l8dfWASFxM1iRvQasuFcn9ci0YLOSHzszVpEZ4=; b=bA6zelFJypugHDoiTrmsdeiio OmX3G5BsV/7a16OEqn0xQ4hw0sAw4R7v8x1yTzZnSTe/oq/sMJc/pSH3o26qY+6E44gf/J5jGx0Gv 3K0X+WJUPYBohWxQR06OB86sfb9AHuCB9jDiz0RGdqZBIH2QH7mgZTugZTB6ptPudc/CvUjvRVHOf rAaBCpbmSIboTg//BZoUFPAsBnOKo6k7+N5tg6rYk7r9Oi/eQvevef2od/Usf1+v9FfwGrZi1tgBD zfb+z1gWLf8lKJtF5k3NxJKXKSgAg+vCdZQYPCxTq3ra1gZ+Q7UqqDiVhguddvb1Vnno0CDKG55jC SVD2LxwCQ==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kpChL-0004fB-Td; Tue, 15 Dec 2020 15:57:11 +0000 Received: from mx2.suse.de ([195.135.220.15]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1kpCgv-0004XL-24; Tue, 15 Dec 2020 15:56:46 +0000 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 0C1D3AEC4; Tue, 15 Dec 2020 15:56:44 +0000 (UTC) From: Nicolas Saenz Julienne To: srinivas.kandagatla@linaro.org, Saenz Julienne , devicetree@vger.kernel.org, bcm-kernel-feedback-list@broadcom.com, linux-rpi-kernel@lists.infradead.org, linux-arm-kernel@lists.infradead.org, Rob Herring Subject: [PATCH 4/6] ARM: dts: bcm2711: Expose boot-loader configuration Date: Tue, 15 Dec 2020 16:56:24 +0100 Message-Id: <20201215155627.2513-5-nsaenzjulienne@suse.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20201215155627.2513-1-nsaenzjulienne@suse.de> References: <20201215155627.2513-1-nsaenzjulienne@suse.de> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20201215_105645_268190_FCCE201B X-CRM114-Status: GOOD ( 12.39 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: tim.gover@raspberrypi.com, catalin.marinas@arm.com, linux-kernel@vger.kernel.org, linux@armlinux.org.uk, will@kernel.org, phil@raspberrypi.com Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org RPi4's co-processor will copy the board's bootloader configuration in memory. Expose it to user-space by using 'nvmem-rmem'. Signed-off-by: Nicolas Saenz Julienne --- arch/arm/boot/dts/bcm2711-rpi-4-b.dts | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/arch/arm/boot/dts/bcm2711-rpi-4-b.dts b/arch/arm/boot/dts/bcm2711-rpi-4-b.dts index c58e58e8ce39..261169eb5e3b 100644 --- a/arch/arm/boot/dts/bcm2711-rpi-4-b.dts +++ b/arch/arm/boot/dts/bcm2711-rpi-4-b.dts @@ -26,6 +26,17 @@ aliases { ethernet0 = &genet; pcie0 = &pcie0; eeprom = &eeprom; + fw_config = &fw_config; + }; + + fw_config: fw-config { + compatible = "nvmem-rmem"; + memory-region = <&eeprom>; + /* + * Will be enabled by the bootloader if the reserved memory + * region is valid. + */ + status = "disabled"; }; leds { From patchwork Tue Dec 15 15:56:25 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nicolas Saenz Julienne X-Patchwork-Id: 11975089 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1B139C2BB48 for ; Tue, 15 Dec 2020 15:58:28 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id C8BCB224F4 for ; Tue, 15 Dec 2020 15:58:27 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C8BCB224F4 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=suse.de Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To:Message-Id:Date: Subject:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=LEl5p16uG7Bd0jDWJAlm2wKyBlyGVbZNnd/rxt+D8BI=; b=qD4m3KxLAIBsN8Mf3l7BiYD/2 yKS15L2kGlDLC59tGCPoXrLq4WeijSEA4mdewM+a18XVZ1k0L9/nsitf6jL3Uy93h/PYGK4J8Sg0L K82vjd4n7tLDBeGREGj1alg3IhdgZ4WfrHGisy9ouMWNW1w+GRqJz1Fz8fdyx7s0yoOwB7rsGjwsL +bWqR+A+pdowaaKRAR35m2b3rWjYIVF9WFwpSI6YZoqXBs14G7CmJ61w2GZHIvp/11W4E7sEIVNrG pNl3aXiK2stTbQhGc+DAIH4e2BjdWQnMWDUtkYHekUjH8S5sGfyU7CSHIrCgER1rKWHCzkc2NMb/r qqIk4gn0g==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kpChQ-0004gY-Gl; Tue, 15 Dec 2020 15:57:16 +0000 Received: from mx2.suse.de ([195.135.220.15]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1kpCgv-0004Xr-VC; Tue, 15 Dec 2020 15:56:47 +0000 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id E6ECAAD4D; Tue, 15 Dec 2020 15:56:44 +0000 (UTC) From: Nicolas Saenz Julienne To: srinivas.kandagatla@linaro.org, Saenz Julienne , devicetree@vger.kernel.org, bcm-kernel-feedback-list@broadcom.com, linux-rpi-kernel@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH 5/6] arm64: defconfig: Enable nvmem's rmem driver Date: Tue, 15 Dec 2020 16:56:25 +0100 Message-Id: <20201215155627.2513-6-nsaenzjulienne@suse.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20201215155627.2513-1-nsaenzjulienne@suse.de> References: <20201215155627.2513-1-nsaenzjulienne@suse.de> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20201215_105646_175112_C50CF332 X-CRM114-Status: GOOD ( 12.10 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: tim.gover@raspberrypi.com, catalin.marinas@arm.com, linux@armlinux.org.uk, robh+dt@kernel.org, will@kernel.org, phil@raspberrypi.com Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org It'll be used by the RPi4 family of boards to access its bootloader configuration. Signed-off-by: Nicolas Saenz Julienne --- arch/arm64/configs/defconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig index 838301650a79..68d6a7e024c0 100644 --- a/arch/arm64/configs/defconfig +++ b/arch/arm64/configs/defconfig @@ -1062,6 +1062,7 @@ CONFIG_ROCKCHIP_EFUSE=y CONFIG_NVMEM_SUNXI_SID=y CONFIG_UNIPHIER_EFUSE=y CONFIG_MESON_EFUSE=m +CONFIG_NVMEM_RMEM=m CONFIG_FPGA=y CONFIG_FPGA_MGR_STRATIX10_SOC=m CONFIG_FPGA_BRIDGE=m From patchwork Tue Dec 15 15:56:26 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nicolas Saenz Julienne X-Patchwork-Id: 11975091 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D95C3C4361B for ; Tue, 15 Dec 2020 15:58:39 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 9E471224F4 for ; Tue, 15 Dec 2020 15:58:39 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 9E471224F4 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=suse.de Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To:Message-Id:Date: Subject:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=RSSEKVx94DpUTBB16pIRXrtFSWlLem08uKNKZpzRT7Q=; b=jwj9MBUtVrOwGrkZgqWjLJlge pSeDSWhGXFqch7f+cgxxbsF9SfKBoUopHqq6ZFQ5j/kbfUub71CMqln5q2VnsVMxpVlkk65vuUZoy LQvmgxRMNgbl/EHv45KrqYz51B0A03XC61MkcOYn5vi9mbbtDyUx26GE3YIxur7mylslyqwOEJ9Ez qSoPB+87lanW38ToCVHa8e3jbUYG+AhVpQ7iiK4CqosVvsZ9UQCFB4rMHWOQtxFQAuJ4FQUfiSwFa 7w/1jOT2sMa8CiZmrYNvphLBW2HHOMo8+idozdt9JjNO15FPYR9MHyAbsP+Jxb889w4Ih6kRJyhmQ 6YqHlNB8Q==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kpChV-0004iD-IN; Tue, 15 Dec 2020 15:57:21 +0000 Received: from mx2.suse.de ([195.135.220.15]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1kpCgw-0004YQ-Tb; Tue, 15 Dec 2020 15:56:48 +0000 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id CE1A6ACE0; Tue, 15 Dec 2020 15:56:45 +0000 (UTC) From: Nicolas Saenz Julienne To: srinivas.kandagatla@linaro.org, Saenz Julienne , devicetree@vger.kernel.org, bcm-kernel-feedback-list@broadcom.com, linux-rpi-kernel@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH 6/6] ARM: multi_v7_defconfig: Enable nvmem's rmem driver Date: Tue, 15 Dec 2020 16:56:26 +0100 Message-Id: <20201215155627.2513-7-nsaenzjulienne@suse.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20201215155627.2513-1-nsaenzjulienne@suse.de> References: <20201215155627.2513-1-nsaenzjulienne@suse.de> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20201215_105647_108515_F74A61A0 X-CRM114-Status: GOOD ( 11.82 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: tim.gover@raspberrypi.com, catalin.marinas@arm.com, linux@armlinux.org.uk, robh+dt@kernel.org, will@kernel.org, phil@raspberrypi.com Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org It'll be used by the RPi4 family of boards to access its bootloader configuration. Signed-off-by: Nicolas Saenz Julienne --- arch/arm/configs/multi_v7_defconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/configs/multi_v7_defconfig b/arch/arm/configs/multi_v7_defconfig index c5f25710fedc..7a326c5eff7a 100644 --- a/arch/arm/configs/multi_v7_defconfig +++ b/arch/arm/configs/multi_v7_defconfig @@ -1107,6 +1107,7 @@ CONFIG_ROCKCHIP_EFUSE=m CONFIG_NVMEM_SUNXI_SID=y CONFIG_NVMEM_VF610_OCOTP=y CONFIG_MESON_MX_EFUSE=m +CONFIG_NVMEM_RMEM=m CONFIG_FSI=m CONFIG_FSI_MASTER_GPIO=m CONFIG_FSI_MASTER_HUB=m