u-boot/drivers/mtd/nvmxip/Kconfig

# SPDX-License-Identifier: GPL-2.0+
#
# Copyright 2023 Arm Limited and/or its affiliates <open-source-office@arm.com>
# Authors:
#   Abdellatif El Khlifi <abdellatif.elkhlifi@arm.com>

config NVMXIP
	bool "NVM XIP devices support"
	select BLK
	help
	  This option allows the emulation of a block storage device
	  on top of a direct access non volatile memory XIP flash devices.
	  This support provides the read operation.

config NVMXIP_QSPI
	bool "QSPI XIP  support"
	select NVMXIP
	help
	  This option allows the emulation of a block storage device on top of a QSPI XIP flash
drivers/mtd/nvmxip: introduce NVM XIP block storage emulation add block storage emulation for NVM XIP flash devices Some paltforms such as Corstone-1000 need to see NVM XIP raw flash as a block storage device with read only capability. Here NVM flash devices are devices with addressable memory (e.g: QSPI NOR flash). The implementation is generic and can be used by different platforms. Two drivers are provided as follows. nvmxip-blk : a generic block driver allowing to read from the XIP flash nvmxip Uclass driver : When a device is described in the DT and associated with UCLASS_NVMXIP, the Uclass creates a block device and binds it with the nvmxip-blk. Platforms can use multiple NVM XIP devices at the same time by defining a DT node for each one of them. Signed-off-by: Abdellatif El Khlifi <abdellatif.elkhlifi@arm.com> 2023-04-17 09:11:52 +00:00			`# SPDX-License-Identifier: GPL-2.0+`
			`#`
			`# Copyright 2023 Arm Limited and/or its affiliates <open-source-office@arm.com>`
			`# Authors:`
			`# Abdellatif El Khlifi <abdellatif.elkhlifi@arm.com>`

			`config NVMXIP`
			`bool "NVM XIP devices support"`
			`select BLK`
			`help`
			`This option allows the emulation of a block storage device`
			`on top of a direct access non volatile memory XIP flash devices.`
			`This support provides the read operation.`
drivers/mtd/nvmxip: introduce QSPI XIP driver add nvmxip_qspi driver under UCLASS_NVMXIP The device associated with this driver is the parent of the blk#<id> device nvmxip_qspi can be reused by other platforms. If the platform has custom settings to apply before using the flash, then the platform can provide its own parent driver belonging to UCLASS_NVMXIP and reuse nvmxip-blk driver. The custom driver can be implemented like nvmxip_qspi in addition to the platform custom settings. Platforms can use multiple NVM XIP devices at the same time by defining a DT node for each one of them. For more details please refer to doc/develop/driver-model/nvmxip_qspi.rst Signed-off-by: Abdellatif El Khlifi <abdellatif.elkhlifi@arm.com> 2023-04-17 09:11:53 +00:00
			`config NVMXIP_QSPI`
			`bool "QSPI XIP support"`
			`select NVMXIP`
			`help`
			`This option allows the emulation of a block storage device on top of a QSPI XIP flash`