1# SPDX-License-Identifier: GPL-2.0-only 2menuconfig NVMEM 3 bool "NVMEM Support" 4 imply NVMEM_LAYOUTS 5 help 6 Support for NVMEM(Non Volatile Memory) devices like EEPROM, EFUSES... 7 8 This framework is designed to provide a generic interface to NVMEM 9 from both the Linux Kernel and the userspace. 10 11 If unsure, say no. 12 13if NVMEM 14 15config NVMEM_SYSFS 16 bool "/sys/bus/nvmem/devices/*/nvmem (sysfs interface)" 17 depends on SYSFS 18 default y 19 help 20 Say Y here to add a sysfs interface for NVMEM. 21 22 This interface is mostly used by userspace applications to 23 read/write directly into nvmem. 24 25# Layouts 26 27source "drivers/nvmem/layouts/Kconfig" 28 29# Devices 30 31config NVMEM_APPLE_EFUSES 32 tristate "Apple eFuse support" 33 depends on ARCH_APPLE || COMPILE_TEST 34 default ARCH_APPLE 35 help 36 Say y here to enable support for reading eFuses on Apple SoCs 37 such as the M1. These are e.g. used to store factory programmed 38 calibration data required for the PCIe or the USB-C PHY. 39 40 This driver can also be built as a module. If so, the module will 41 be called nvmem-apple-efuses. 42 43config NVMEM_BCM_OCOTP 44 tristate "Broadcom On-Chip OTP Controller support" 45 depends on ARCH_BCM_IPROC || COMPILE_TEST 46 depends on HAS_IOMEM 47 default ARCH_BCM_IPROC 48 help 49 Say y here to enable read/write access to the Broadcom OTP 50 controller. 51 52 This driver can also be built as a module. If so, the module 53 will be called nvmem-bcm-ocotp. 54 55config NVMEM_BRCM_NVRAM 56 tristate "Broadcom's NVRAM support" 57 depends on ARCH_BCM_5301X || COMPILE_TEST 58 depends on HAS_IOMEM 59 select GENERIC_NET_UTILS 60 help 61 This driver provides support for Broadcom's NVRAM that can be accessed 62 using I/O mapping. 63 64config NVMEM_IMX_IIM 65 tristate "i.MX IC Identification Module support" 66 depends on ARCH_MXC || COMPILE_TEST 67 help 68 This is a driver for the IC Identification Module (IIM) available on 69 i.MX SoCs, providing access to 4 Kbits of programmable 70 eFuses. 71 72 This driver can also be built as a module. If so, the module 73 will be called nvmem-imx-iim. 74 75config NVMEM_IMX_OCOTP 76 tristate "i.MX 6/7/8 On-Chip OTP Controller support" 77 depends on ARCH_MXC || COMPILE_TEST 78 depends on HAS_IOMEM 79 help 80 This is a driver for the On-Chip OTP Controller (OCOTP) available on 81 i.MX6 SoCs, providing access to 4 Kbits of one-time programmable 82 eFuses. 83 84 This driver can also be built as a module. If so, the module 85 will be called nvmem-imx-ocotp. 86 87config NVMEM_IMX_OCOTP_ELE 88 tristate "i.MX On-Chip OTP Controller support" 89 depends on ARCH_MXC || COMPILE_TEST 90 depends on HAS_IOMEM 91 depends on OF 92 help 93 This is a driver for the On-Chip OTP Controller (OCOTP) 94 available on i.MX SoCs which has ELE. 95 96config NVMEM_IMX_OCOTP_SCU 97 tristate "i.MX8 SCU On-Chip OTP Controller support" 98 depends on IMX_SCU 99 depends on HAVE_ARM_SMCCC 100 help 101 This is a driver for the SCU On-Chip OTP Controller (OCOTP) 102 available on i.MX8 SoCs. 103 104config NVMEM_JZ4780_EFUSE 105 tristate "JZ4780 EFUSE Memory Support" 106 depends on MACH_INGENIC || COMPILE_TEST 107 depends on HAS_IOMEM 108 depends on OF 109 select REGMAP_MMIO 110 help 111 Say Y here to include support for JZ4780 efuse memory found on 112 all JZ4780 SoC based devices. 113 To compile this driver as a module, choose M here: the module 114 will be called nvmem_jz4780_efuse. 115 116config NVMEM_LAN9662_OTPC 117 tristate "Microchip LAN9662 OTP controller support" 118 depends on SOC_LAN966 || COMPILE_TEST 119 depends on HAS_IOMEM 120 help 121 This driver enables the OTP controller available on Microchip LAN9662 122 SoCs. It controls the access to the OTP memory connected to it. 123 124config NVMEM_LAYERSCAPE_SFP 125 tristate "Layerscape SFP (Security Fuse Processor) support" 126 depends on ARCH_LAYERSCAPE || COMPILE_TEST 127 depends on HAS_IOMEM 128 select REGMAP_MMIO 129 help 130 This driver provides support to read the eFuses on Freescale 131 Layerscape SoC's. For example, the vendor provides a per part 132 unique ID there. 133 134 This driver can also be built as a module. If so, the module 135 will be called layerscape-sfp. 136 137config NVMEM_LPC18XX_EEPROM 138 tristate "NXP LPC18XX EEPROM Memory Support" 139 depends on ARCH_LPC18XX || COMPILE_TEST 140 depends on HAS_IOMEM 141 help 142 Say Y here to include support for NXP LPC18xx EEPROM memory found in 143 NXP LPC185x/3x and LPC435x/3x/2x/1x devices. 144 To compile this driver as a module, choose M here: the module 145 will be called nvmem_lpc18xx_eeprom. 146 147config NVMEM_LPC18XX_OTP 148 tristate "NXP LPC18XX OTP Memory Support" 149 depends on ARCH_LPC18XX || COMPILE_TEST 150 depends on HAS_IOMEM 151 help 152 Say Y here to include support for NXP LPC18xx OTP memory found on 153 all LPC18xx and LPC43xx devices. 154 To compile this driver as a module, choose M here: the module 155 will be called nvmem_lpc18xx_otp. 156 157config NVMEM_MESON_EFUSE 158 tristate "Amlogic Meson GX eFuse Support" 159 depends on (ARCH_MESON || COMPILE_TEST) && MESON_SM 160 help 161 This is a driver to retrieve specific values from the eFuse found on 162 the Amlogic Meson GX SoCs. 163 164 This driver can also be built as a module. If so, the module 165 will be called nvmem_meson_efuse. 166 167config NVMEM_MESON_MX_EFUSE 168 tristate "Amlogic Meson6/Meson8/Meson8b eFuse Support" 169 depends on ARCH_MESON || COMPILE_TEST 170 help 171 This is a driver to retrieve specific values from the eFuse found on 172 the Amlogic Meson6, Meson8 and Meson8b SoCs. 173 174 This driver can also be built as a module. If so, the module 175 will be called nvmem_meson_mx_efuse. 176 177config NVMEM_MICROCHIP_OTPC 178 tristate "Microchip OTPC support" 179 depends on ARCH_AT91 || COMPILE_TEST 180 help 181 This driver enable the OTP controller available on Microchip SAMA7G5 182 SoCs. It controls the access to the OTP memory connected to it. 183 184config NVMEM_MTK_EFUSE 185 tristate "Mediatek SoCs EFUSE support" 186 depends on ARCH_MEDIATEK || COMPILE_TEST 187 depends on HAS_IOMEM 188 help 189 This is a driver to access hardware related data like sensor 190 calibration, HDMI impedance etc. 191 192 This driver can also be built as a module. If so, the module 193 will be called efuse-mtk. 194 195config NVMEM_MXS_OCOTP 196 tristate "Freescale MXS On-Chip OTP Memory Support" 197 depends on ARCH_MXS || COMPILE_TEST 198 depends on HAS_IOMEM 199 help 200 If you say Y here, you will get readonly access to the 201 One Time Programmable memory pages that are stored 202 on the Freescale i.MX23/i.MX28 processor. 203 204 This driver can also be built as a module. If so, the module 205 will be called nvmem-mxs-ocotp. 206 207config NVMEM_NINTENDO_OTP 208 tristate "Nintendo Wii and Wii U OTP Support" 209 depends on WII || COMPILE_TEST 210 help 211 This is a driver exposing the OTP of a Nintendo Wii or Wii U console. 212 213 This memory contains common and per-console keys, signatures and 214 related data required to access peripherals. 215 216 This driver can also be built as a module. If so, the module 217 will be called nvmem-nintendo-otp. 218 219config NVMEM_QCOM_QFPROM 220 tristate "QCOM QFPROM Support" 221 depends on ARCH_QCOM || COMPILE_TEST 222 depends on HAS_IOMEM 223 help 224 Say y here to enable QFPROM support. The QFPROM provides access 225 functions for QFPROM data to rest of the drivers via nvmem interface. 226 227 This driver can also be built as a module. If so, the module 228 will be called nvmem_qfprom. 229 230config NVMEM_QCOM_SEC_QFPROM 231 tristate "QCOM SECURE QFPROM Support" 232 depends on ARCH_QCOM || COMPILE_TEST 233 depends on HAS_IOMEM 234 depends on OF 235 select QCOM_SCM 236 help 237 Say y here to enable secure QFPROM support. The secure QFPROM provides access 238 functions for QFPROM data to rest of the drivers via nvmem interface. 239 240 This driver can also be built as a module. If so, the module will be called 241 nvmem_sec_qfprom. 242 243config NVMEM_RAVE_SP_EEPROM 244 tristate "Rave SP EEPROM Support" 245 depends on RAVE_SP_CORE 246 help 247 Say y here to enable Rave SP EEPROM support. 248 249config NVMEM_RCAR_EFUSE 250 tristate "Renesas R-Car Gen4 E-FUSE support" 251 depends on (ARCH_RENESAS && ARM64) || COMPILE_TEST 252 depends on NVMEM 253 help 254 Enable support for reading the fuses in the E-FUSE or OTP 255 non-volatile memory block on Renesas R-Car Gen4 SoCs. 256 257 This driver can also be built as a module. If so, the module 258 will be called nvmem-rcar-efuse. 259 260config NVMEM_RMEM 261 tristate "Reserved Memory Based Driver Support" 262 depends on HAS_IOMEM 263 help 264 This driver maps reserved memory into an nvmem device. It might be 265 useful to expose information left by firmware in memory. 266 267 This driver can also be built as a module. If so, the module 268 will be called nvmem-rmem. 269 270config NVMEM_ROCKCHIP_EFUSE 271 tristate "Rockchip eFuse Support" 272 depends on ARCH_ROCKCHIP || COMPILE_TEST 273 depends on HAS_IOMEM 274 help 275 This is a simple driver to dump specified values of Rockchip SoC 276 from eFuse, such as cpu-leakage. 277 278 This driver can also be built as a module. If so, the module 279 will be called nvmem_rockchip_efuse. 280 281config NVMEM_ROCKCHIP_OTP 282 tristate "Rockchip OTP controller support" 283 depends on ARCH_ROCKCHIP || COMPILE_TEST 284 depends on HAS_IOMEM 285 help 286 This is a simple driver to dump specified values of Rockchip SoC 287 from OTP, such as cpu-leakage. 288 289 This driver can also be built as a module. If so, the module 290 will be called nvmem_rockchip_otp. 291 292config NVMEM_SC27XX_EFUSE 293 tristate "Spreadtrum SC27XX eFuse Support" 294 depends on MFD_SC27XX_PMIC || COMPILE_TEST 295 depends on HAS_IOMEM 296 help 297 This is a simple driver to dump specified values of Spreadtrum 298 SC27XX PMICs from eFuse. 299 300 This driver can also be built as a module. If so, the module 301 will be called nvmem-sc27xx-efuse. 302 303config NVMEM_SNVS_LPGPR 304 tristate "Support for Low Power General Purpose Register" 305 depends on ARCH_MXC || COMPILE_TEST 306 help 307 This is a driver for Low Power General Purpose Register (LPGPR) available on 308 i.MX6 and i.MX7 SoCs in Secure Non-Volatile Storage (SNVS) of this chip. 309 310 This driver can also be built as a module. If so, the module 311 will be called nvmem-snvs-lpgpr. 312 313config NVMEM_SPMI_SDAM 314 tristate "SPMI SDAM Support" 315 depends on SPMI 316 help 317 This driver supports the Shared Direct Access Memory Module on 318 Qualcomm Technologies, Inc. PMICs. It provides the clients 319 an interface to read/write to the SDAM module's shared memory. 320 321config NVMEM_SPRD_EFUSE 322 tristate "Spreadtrum SoC eFuse Support" 323 depends on ARCH_SPRD || COMPILE_TEST 324 depends on HAS_IOMEM 325 help 326 This is a simple driver to dump specified values of Spreadtrum 327 SoCs from eFuse. 328 329 This driver can also be built as a module. If so, the module 330 will be called nvmem-sprd-efuse. 331 332config NVMEM_STM32_BSEC_OPTEE_TA 333 def_bool NVMEM_STM32_ROMEM && OPTEE 334 help 335 Say y here to enable the accesses to STM32MP SoC OTPs by the OP-TEE 336 trusted application STM32MP BSEC. 337 338 This library is a used by stm32-romem driver or included in the module 339 called nvmem-stm32-romem. 340 341config NVMEM_STM32_ROMEM 342 tristate "STMicroelectronics STM32 factory-programmed memory support" 343 depends on ARCH_STM32 || COMPILE_TEST 344 depends on OPTEE || !OPTEE 345 help 346 Say y here to enable read-only access for STMicroelectronics STM32 347 factory-programmed memory area. 348 349 This driver can also be built as a module. If so, the module 350 will be called nvmem-stm32-romem. 351 352config NVMEM_SUNPLUS_OCOTP 353 tristate "Sunplus SoC OTP support" 354 depends on SOC_SP7021 || COMPILE_TEST 355 depends on HAS_IOMEM 356 help 357 This is a driver for the On-chip OTP controller (OCOTP) available 358 on Sunplus SoCs. It provides access to 128 bytes of one-time 359 programmable eFuse. 360 361 This driver can also be built as a module. If so, the module 362 will be called nvmem-sunplus-ocotp. 363 364config NVMEM_SUNXI_SID 365 tristate "Allwinner SoCs SID support" 366 depends on ARCH_SUNXI 367 help 368 This is a driver for the 'security ID' available on various Allwinner 369 devices. 370 371 This driver can also be built as a module. If so, the module 372 will be called nvmem_sunxi_sid. 373 374config NVMEM_U_BOOT_ENV 375 tristate "U-Boot environment variables support" 376 depends on OF && MTD 377 select NVMEM_LAYOUT_U_BOOT_ENV 378 help 379 U-Boot stores its setup as environment variables. This driver adds 380 support for verifying & exporting such data. It also exposes variables 381 as NVMEM cells so they can be referenced by other drivers. 382 383 Currently this drivers works only with env variables on top of MTD. 384 385 If compiled as module it will be called nvmem_u-boot-env. 386 387config NVMEM_UNIPHIER_EFUSE 388 tristate "UniPhier SoCs eFuse support" 389 depends on ARCH_UNIPHIER || COMPILE_TEST 390 depends on HAS_IOMEM 391 help 392 This is a simple driver to dump specified values of UniPhier SoC 393 from eFuse. 394 395 This driver can also be built as a module. If so, the module 396 will be called nvmem-uniphier-efuse. 397 398config NVMEM_VF610_OCOTP 399 tristate "VF610 SoC OCOTP support" 400 depends on SOC_VF610 || COMPILE_TEST 401 depends on HAS_IOMEM 402 help 403 This is a driver for the 'OCOTP' peripheral available on Vybrid 404 devices like VF5xx and VF6xx. 405 406 This driver can also be build as a module. If so, the module will 407 be called nvmem-vf610-ocotp. 408 409config NVMEM_ZYNQMP 410 tristate "Xilinx ZYNQMP SoC nvmem firmware support" 411 depends on ARCH_ZYNQMP 412 help 413 This is a driver to access hardware related data like 414 soc revision, IDCODE... etc by using the firmware 415 interface. 416 417 If sure, say yes. If unsure, say no. 418 419config NVMEM_QORIQ_EFUSE 420 tristate "NXP QorIQ eFuse support" 421 depends on PPC_85xx || COMPILE_TEST 422 depends on HAS_IOMEM 423 help 424 This driver provides read support for the eFuses (SFP) on NXP QorIQ 425 series SoC's. This includes secure boot settings, the globally unique 426 NXP ID 'FUIDR' and the OEM unique ID 'OUIDR'. 427 428 This driver can also be built as a module. If so, the module 429 will be called nvmem_qoriq_efuse. 430 431endif 432