# SPDX-License-Identifier: GPL-2.0-only menuconfig NVMEM bool "NVMEM Support" imply NVMEM_LAYOUTS select GENERIC_NET_UTILS help Support for NVMEM(Non Volatile Memory) devices like EEPROM, EFUSES... This framework is designed to provide a generic interface to NVMEM from both the Linux Kernel and the userspace. If unsure, say no. if NVMEM config NVMEM_SYSFS bool "/sys/bus/nvmem/devices/*/nvmem (sysfs interface)" depends on SYSFS default y help Say Y here to add a sysfs interface for NVMEM. This interface is mostly used by userspace applications to read/write directly into nvmem. # Layouts source "drivers/nvmem/layouts/Kconfig" # Devices config NVMEM_APPLE_EFUSES tristate "Apple eFuse support" depends on ARCH_APPLE || COMPILE_TEST default ARCH_APPLE help Say y here to enable support for reading eFuses on Apple SoCs such as the M1. These are e.g. used to store factory programmed calibration data required for the PCIe or the USB-C PHY. This driver can also be built as a module. If so, the module will be called nvmem-apple-efuses. config NVMEM_BLOCK tristate "Block device NVMEM provider" depends on BLOCK depends on OF depends on NVMEM select BLOCK_NOTIFIERS help Allow block devices (or partitions) to act as NVMEM prodivers, typically used with eMMC to store MAC addresses or Wi-Fi calibration data on embedded devices. config NVMEM_BCM_OCOTP tristate "Broadcom On-Chip OTP Controller support" depends on ARCH_BCM_IPROC || COMPILE_TEST depends on HAS_IOMEM default ARCH_BCM_IPROC help Say y here to enable read/write access to the Broadcom OTP controller. This driver can also be built as a module. If so, the module will be called nvmem-bcm-ocotp. config NVMEM_BRCM_NVRAM tristate "Broadcom's NVRAM support" depends on ARCH_BCM_5301X || COMPILE_TEST depends on HAS_IOMEM select GENERIC_NET_UTILS help This driver provides support for Broadcom's NVRAM that can be accessed using I/O mapping. config NVMEM_IMX_IIM tristate "i.MX IC Identification Module support" depends on ARCH_MXC || COMPILE_TEST help This is a driver for the IC Identification Module (IIM) available on i.MX SoCs, providing access to 4 Kbits of programmable eFuses. This driver can also be built as a module. If so, the module will be called nvmem-imx-iim. config NVMEM_IMX_OCOTP tristate "i.MX 6/7/8 On-Chip OTP Controller support" depends on ARCH_MXC || COMPILE_TEST depends on HAS_IOMEM help This is a driver for the On-Chip OTP Controller (OCOTP) available on i.MX6 SoCs, providing access to 4 Kbits of one-time programmable eFuses. This driver can also be built as a module. If so, the module will be called nvmem-imx-ocotp. config NVMEM_IMX_OCOTP_ELE tristate "i.MX On-Chip OTP Controller support" depends on ARCH_MXC || COMPILE_TEST depends on HAS_IOMEM depends on OF help This is a driver for the On-Chip OTP Controller (OCOTP) available on i.MX SoCs which has ELE. config NVMEM_IMX_OCOTP_SCU tristate "i.MX8 SCU On-Chip OTP Controller support" depends on IMX_SCU depends on HAVE_ARM_SMCCC help This is a driver for the SCU On-Chip OTP Controller (OCOTP) available on i.MX8 SoCs. config NVMEM_JZ4780_EFUSE tristate "JZ4780 EFUSE Memory Support" depends on MACH_INGENIC || COMPILE_TEST depends on HAS_IOMEM depends on OF select REGMAP_MMIO help Say Y here to include support for JZ4780 efuse memory found on all JZ4780 SoC based devices. To compile this driver as a module, choose M here: the module will be called nvmem_jz4780_efuse. config NVMEM_LAN9662_OTPC tristate "Microchip LAN9662 OTP controller support" depends on SOC_LAN966 || COMPILE_TEST depends on HAS_IOMEM help This driver enables the OTP controller available on Microchip LAN9662 SoCs. It controls the access to the OTP memory connected to it. config NVMEM_LAYERSCAPE_SFP tristate "Layerscape SFP (Security Fuse Processor) support" depends on ARCH_LAYERSCAPE || COMPILE_TEST depends on HAS_IOMEM select REGMAP_MMIO help This driver provides support to read the eFuses on Freescale Layerscape SoC's. For example, the vendor provides a per part unique ID there. This driver can also be built as a module. If so, the module will be called layerscape-sfp. config NVMEM_LPC18XX_EEPROM tristate "NXP LPC18XX EEPROM Memory Support" depends on ARCH_LPC18XX || COMPILE_TEST depends on HAS_IOMEM help Say Y here to include support for NXP LPC18xx EEPROM memory found in NXP LPC185x/3x and LPC435x/3x/2x/1x devices. To compile this driver as a module, choose M here: the module will be called nvmem_lpc18xx_eeprom. config NVMEM_LPC18XX_OTP tristate "NXP LPC18XX OTP Memory Support" depends on ARCH_LPC18XX || COMPILE_TEST depends on HAS_IOMEM help Say Y here to include support for NXP LPC18xx OTP memory found on all LPC18xx and LPC43xx devices. To compile this driver as a module, choose M here: the module will be called nvmem_lpc18xx_otp. config NVMEM_MESON_EFUSE tristate "Amlogic Meson GX eFuse Support" depends on (ARCH_MESON || COMPILE_TEST) && MESON_SM help This is a driver to retrieve specific values from the eFuse found on the Amlogic Meson GX SoCs. This driver can also be built as a module. If so, the module will be called nvmem_meson_efuse. config NVMEM_MESON_MX_EFUSE tristate "Amlogic Meson6/Meson8/Meson8b eFuse Support" depends on ARCH_MESON || COMPILE_TEST help This is a driver to retrieve specific values from the eFuse found on the Amlogic Meson6, Meson8 and Meson8b SoCs. This driver can also be built as a module. If so, the module will be called nvmem_meson_mx_efuse. config NVMEM_MICROCHIP_OTPC tristate "Microchip OTPC support" depends on ARCH_AT91 || COMPILE_TEST help This driver enable the OTP controller available on Microchip SAMA7G5 SoCs. It controls the access to the OTP memory connected to it. config NVMEM_MTK_EFUSE tristate "Mediatek SoCs EFUSE support" depends on ARCH_MEDIATEK || COMPILE_TEST depends on HAS_IOMEM help This is a driver to access hardware related data like sensor calibration, HDMI impedance etc. This driver can also be built as a module. If so, the module will be called efuse-mtk. config NVMEM_MXS_OCOTP tristate "Freescale MXS On-Chip OTP Memory Support" depends on ARCH_MXS || COMPILE_TEST depends on HAS_IOMEM help If you say Y here, you will get readonly access to the One Time Programmable memory pages that are stored on the Freescale i.MX23/i.MX28 processor. This driver can also be built as a module. If so, the module will be called nvmem-mxs-ocotp. config NVMEM_NINTENDO_OTP tristate "Nintendo Wii and Wii U OTP Support" depends on WII || COMPILE_TEST help This is a driver exposing the OTP of a Nintendo Wii or Wii U console. This memory contains common and per-console keys, signatures and related data required to access peripherals. This driver can also be built as a module. If so, the module will be called nvmem-nintendo-otp. config NVMEM_QCOM_QFPROM tristate "QCOM QFPROM Support" depends on ARCH_QCOM || COMPILE_TEST depends on HAS_IOMEM help Say y here to enable QFPROM support. The QFPROM provides access functions for QFPROM data to rest of the drivers via nvmem interface. This driver can also be built as a module. If so, the module will be called nvmem_qfprom. config NVMEM_QCOM_SEC_QFPROM tristate "QCOM SECURE QFPROM Support" depends on ARCH_QCOM || COMPILE_TEST depends on HAS_IOMEM depends on OF select QCOM_SCM help Say y here to enable secure QFPROM support. The secure QFPROM provides access functions for QFPROM data to rest of the drivers via nvmem interface. This driver can also be built as a module. If so, the module will be called nvmem_sec_qfprom. config NVMEM_RAVE_SP_EEPROM tristate "Rave SP EEPROM Support" depends on RAVE_SP_CORE help Say y here to enable Rave SP EEPROM support. config NVMEM_RMEM tristate "Reserved Memory Based Driver Support" depends on HAS_IOMEM help This driver 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. config NVMEM_ROCKCHIP_EFUSE tristate "Rockchip eFuse Support" depends on ARCH_ROCKCHIP || COMPILE_TEST depends on HAS_IOMEM help This is a simple driver to dump specified values of Rockchip SoC from eFuse, such as cpu-leakage. This driver can also be built as a module. If so, the module will be called nvmem_rockchip_efuse. config NVMEM_ROCKCHIP_OTP tristate "Rockchip OTP controller support" depends on ARCH_ROCKCHIP || COMPILE_TEST depends on HAS_IOMEM help This is a simple driver to dump specified values of Rockchip SoC from OTP, such as cpu-leakage. This driver can also be built as a module. If so, the module will be called nvmem_rockchip_otp. config NVMEM_SC27XX_EFUSE tristate "Spreadtrum SC27XX eFuse Support" depends on MFD_SC27XX_PMIC || COMPILE_TEST depends on HAS_IOMEM help This is a simple driver to dump specified values of Spreadtrum SC27XX PMICs from eFuse. This driver can also be built as a module. If so, the module will be called nvmem-sc27xx-efuse. config NVMEM_SNVS_LPGPR tristate "Support for Low Power General Purpose Register" depends on ARCH_MXC || COMPILE_TEST help This is a driver for Low Power General Purpose Register (LPGPR) available on i.MX6 and i.MX7 SoCs in Secure Non-Volatile Storage (SNVS) of this chip. This driver can also be built as a module. If so, the module will be called nvmem-snvs-lpgpr. config NVMEM_SPMI_SDAM tristate "SPMI SDAM Support" depends on SPMI help This driver supports the Shared Direct Access Memory Module on Qualcomm Technologies, Inc. PMICs. It provides the clients an interface to read/write to the SDAM module's shared memory. config NVMEM_SPRD_EFUSE tristate "Spreadtrum SoC eFuse Support" depends on ARCH_SPRD || COMPILE_TEST depends on HAS_IOMEM help This is a simple driver to dump specified values of Spreadtrum SoCs from eFuse. This driver can also be built as a module. If so, the module will be called nvmem-sprd-efuse. config NVMEM_STM32_BSEC_OPTEE_TA def_bool NVMEM_STM32_ROMEM && OPTEE help Say y here to enable the accesses to STM32MP SoC OTPs by the OP-TEE trusted application STM32MP BSEC. This library is a used by stm32-romem driver or included in the module called nvmem-stm32-romem. config NVMEM_STM32_ROMEM tristate "STMicroelectronics STM32 factory-programmed memory support" depends on ARCH_STM32 || COMPILE_TEST depends on OPTEE || !OPTEE help Say y here to enable read-only access for STMicroelectronics STM32 factory-programmed memory area. This driver can also be built as a module. If so, the module will be called nvmem-stm32-romem. config NVMEM_SUNPLUS_OCOTP tristate "Sunplus SoC OTP support" depends on SOC_SP7021 || COMPILE_TEST depends on HAS_IOMEM help This is a driver for the On-chip OTP controller (OCOTP) available on Sunplus SoCs. It provides access to 128 bytes of one-time programmable eFuse. This driver can also be built as a module. If so, the module will be called nvmem-sunplus-ocotp. config NVMEM_SUNXI_SID tristate "Allwinner SoCs SID support" depends on ARCH_SUNXI help This is a driver for the 'security ID' available on various Allwinner devices. This driver can also be built as a module. If so, the module will be called nvmem_sunxi_sid. config NVMEM_U_BOOT_ENV tristate "U-Boot environment variables support" depends on OF && MTD select NVMEM_LAYOUT_U_BOOT_ENV help U-Boot stores its setup as environment variables. This driver adds support for verifying & exporting such data. It also exposes variables as NVMEM cells so they can be referenced by other drivers. Currently this drivers works only with env variables on top of MTD. If compiled as module it will be called nvmem_u-boot-env. config NVMEM_UNIPHIER_EFUSE tristate "UniPhier SoCs eFuse support" depends on ARCH_UNIPHIER || COMPILE_TEST depends on HAS_IOMEM help This is a simple driver to dump specified values of UniPhier SoC from eFuse. This driver can also be built as a module. If so, the module will be called nvmem-uniphier-efuse. config NVMEM_VF610_OCOTP tristate "VF610 SoC OCOTP support" depends on SOC_VF610 || COMPILE_TEST depends on HAS_IOMEM help This is a driver for the 'OCOTP' peripheral available on Vybrid devices like VF5xx and VF6xx. This driver can also be build as a module. If so, the module will be called nvmem-vf610-ocotp. config NVMEM_ZYNQMP tristate "Xilinx ZYNQMP SoC nvmem firmware support" depends on ARCH_ZYNQMP help This is a driver to access hardware related data like soc revision, IDCODE... etc by using the firmware interface. If sure, say yes. If unsure, say no. config NVMEM_QORIQ_EFUSE tristate "NXP QorIQ eFuse support" depends on PPC_85xx || COMPILE_TEST depends on HAS_IOMEM help This driver provides read support for the eFuses (SFP) on NXP QorIQ series SoC's. This includes secure boot settings, the globally unique NXP ID 'FUIDR' and the OEM unique ID 'OUIDR'. This driver can also be built as a module. If so, the module will be called nvmem_qoriq_efuse. endif