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
Cc: linux-kernel@vger.kernel.org, linux@armlinux.org.uk,
catalin.marinas@arm.com, will@kernel.org, robh+dt@kernel.org,
tim.gover@raspberrypi.com, phil@raspberrypi.com
Subject: [PATCH 0/6] Expose RPi4'd bootloader configuration
Date: Tue, 15 Dec 2020 16:56:20 +0100 [thread overview]
Message-ID: <20201215155627.2513-1-nsaenzjulienne@suse.de> (raw)
Soon to be released versions of RPi4's firmware will take of care
passing their bootloader's configuration to the OS by copying it into
memory and creating a reserved memory node in the board's DT. In order
to make use of this information, this series introduces a new generic
nvmem driver that maps reserved-memory nodes into nvmem devices.
An alternative approach, less nice IMO, would be to create a
platform-specific 'soc' driver.
Regards,
Nicolas
---
Nicolas Saenz Julienne (6):
dt-bindings: nvmem: Add bindings for rmem driver
nvmem: Add driver to expose reserved memory as nvmem
ARM: dts: bcm2711: Add reserved memory template to hold firmware
configuration
ARM: dts: bcm2711: Expose boot-loader configuration
arm64: defconfig: Enable nvmem's rmem driver
ARM: multi_v7_defconfig: Enable nvmem's rmem driver
.../devicetree/bindings/nvmem/rmem.yaml | 35 +++++++
arch/arm/boot/dts/bcm2711-rpi-4-b.dts | 25 +++++
arch/arm/configs/multi_v7_defconfig | 1 +
arch/arm64/configs/defconfig | 1 +
drivers/nvmem/Kconfig | 8 ++
drivers/nvmem/Makefile | 2 +
drivers/nvmem/rmem.c | 92 +++++++++++++++++++
7 files changed, 164 insertions(+)
create mode 100644 Documentation/devicetree/bindings/nvmem/rmem.yaml
create mode 100644 drivers/nvmem/rmem.c
--
2.29.2
next reply other threads:[~2020-12-15 16:08 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-15 15:56 Nicolas Saenz Julienne [this message]
2020-12-15 15:56 ` [PATCH 1/6] dt-bindings: nvmem: Add bindings for rmem driver Nicolas Saenz Julienne
2020-12-15 20:25 ` Rob Herring
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 ` [PATCH 3/6] ARM: dts: bcm2711: Add reserved memory template to hold firmware configuration Nicolas Saenz Julienne
2020-12-15 20:27 ` Rob Herring
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 ` [PATCH 6/6] ARM: multi_v7_defconfig: " Nicolas Saenz Julienne
2020-12-15 16:05 ` [PATCH 0/6] Expose RPi4'd bootloader configuration Nicolas Saenz Julienne
2020-12-15 18:44 ` Catalin Marinas
2020-12-15 19:01 ` Nicolas Saenz Julienne
2020-12-15 19:54 ` Rob Herring
2020-12-15 21:21 ` Nicolas Saenz Julienne
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