All of lore.kernel.org
 help / color / mirror / Atom feed
From: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
To: srinivas.kandagatla@linaro.org,
	Saenz Julienne <nsaenzjulienne@suse.de>,
	devicetree@vger.kernel.org,
	bcm-kernel-feedback-list@broadcom.com,
	linux-rpi-kernel@lists.infradead.org,
	linux-arm-kernel@lists.infradead.org,
	Rob Herring <robh+dt@kernel.org>
Cc: linux-kernel@vger.kernel.org, linux@armlinux.org.uk,
	catalin.marinas@arm.com, will@kernel.org,
	tim.gover@raspberrypi.com, phil@raspberrypi.com
Subject: [PATCH 4/6] ARM: dts: bcm2711: Expose boot-loader configuration
Date: Tue, 15 Dec 2020 16:56:24 +0100	[thread overview]
Message-ID: <20201215155627.2513-5-nsaenzjulienne@suse.de> (raw)
In-Reply-To: <20201215155627.2513-1-nsaenzjulienne@suse.de>

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 <nsaenzjulienne@suse.de>
---
 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 {
-- 
2.29.2


WARNING: multiple messages have this Message-ID (diff)
From: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
To: srinivas.kandagatla@linaro.org,
	Saenz Julienne <nsaenzjulienne@suse.de>,
	devicetree@vger.kernel.org,
	bcm-kernel-feedback-list@broadcom.com,
	linux-rpi-kernel@lists.infradead.org,
	linux-arm-kernel@lists.infradead.org,
	Rob Herring <robh+dt@kernel.org>
Cc: tim.gover@raspberrypi.com, catalin.marinas@arm.com,
	linux-kernel@vger.kernel.org, linux@armlinux.org.uk,
	will@kernel.org, phil@raspberrypi.com
Subject: [PATCH 4/6] ARM: dts: bcm2711: Expose boot-loader configuration
Date: Tue, 15 Dec 2020 16:56:24 +0100	[thread overview]
Message-ID: <20201215155627.2513-5-nsaenzjulienne@suse.de> (raw)
In-Reply-To: <20201215155627.2513-1-nsaenzjulienne@suse.de>

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 <nsaenzjulienne@suse.de>
---
 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 {
-- 
2.29.2


_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

  parent reply	other threads:[~2020-12-15 16:02 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-12-15 15:56 [PATCH 0/6] Expose RPi4'd bootloader configuration Nicolas Saenz Julienne
2020-12-15 15:56 ` Nicolas Saenz Julienne
2020-12-15 15:56 ` [PATCH 1/6] dt-bindings: nvmem: Add bindings for rmem driver Nicolas Saenz Julienne
2020-12-15 15:56   ` Nicolas Saenz Julienne
2020-12-15 20:25   ` Rob Herring
2020-12-15 20:25     ` Rob Herring
2020-12-15 21:16     ` Nicolas Saenz Julienne
2020-12-15 21:16       ` Nicolas Saenz Julienne
2020-12-15 15:56 ` [PATCH 2/6] nvmem: Add driver to expose reserved memory as nvmem Nicolas Saenz Julienne
2020-12-15 15:56   ` Nicolas Saenz Julienne
2020-12-15 15:56 ` [PATCH 3/6] ARM: dts: bcm2711: Add reserved memory template to hold firmware configuration Nicolas Saenz Julienne
2020-12-15 15:56   ` Nicolas Saenz Julienne
2020-12-15 20:27   ` Rob Herring
2020-12-15 20:27     ` Rob Herring
2020-12-15 15:56 ` Nicolas Saenz Julienne [this message]
2020-12-15 15:56   ` [PATCH 4/6] ARM: dts: bcm2711: Expose boot-loader configuration Nicolas Saenz Julienne
2020-12-15 15:56 ` [PATCH 5/6] arm64: defconfig: Enable nvmem's rmem driver Nicolas Saenz Julienne
2020-12-15 15:56   ` Nicolas Saenz Julienne
2020-12-15 15:56 ` [PATCH 6/6] ARM: multi_v7_defconfig: " Nicolas Saenz Julienne
2020-12-15 15:56   ` Nicolas Saenz Julienne
2020-12-15 16:05 ` [PATCH 0/6] Expose RPi4'd bootloader configuration Nicolas Saenz Julienne
2020-12-15 16:05   ` Nicolas Saenz Julienne
2020-12-15 18:44 ` Catalin Marinas
2020-12-15 18:44   ` Catalin Marinas
2020-12-15 19:01   ` Nicolas Saenz Julienne
2020-12-15 19:01     ` Nicolas Saenz Julienne
2020-12-15 19:54     ` Rob Herring
2020-12-15 19:54       ` Rob Herring
2020-12-15 21:21       ` Nicolas Saenz Julienne
2020-12-15 21:21         ` Nicolas Saenz Julienne

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20201215155627.2513-5-nsaenzjulienne@suse.de \
    --to=nsaenzjulienne@suse.de \
    --cc=bcm-kernel-feedback-list@broadcom.com \
    --cc=catalin.marinas@arm.com \
    --cc=devicetree@vger.kernel.org \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-rpi-kernel@lists.infradead.org \
    --cc=linux@armlinux.org.uk \
    --cc=phil@raspberrypi.com \
    --cc=robh+dt@kernel.org \
    --cc=srinivas.kandagatla@linaro.org \
    --cc=tim.gover@raspberrypi.com \
    --cc=will@kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.