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_RMEM
250	tristate "Reserved Memory Based Driver Support"
251	depends on HAS_IOMEM
252	help
253	  This driver maps reserved memory into an nvmem device. It might be
254	  useful to expose information left by firmware in memory.
255
256	  This driver can also be built as a module. If so, the module
257	  will be called nvmem-rmem.
258
259config NVMEM_ROCKCHIP_EFUSE
260	tristate "Rockchip eFuse Support"
261	depends on ARCH_ROCKCHIP || COMPILE_TEST
262	depends on HAS_IOMEM
263	help
264	  This is a simple driver to dump specified values of Rockchip SoC
265	  from eFuse, such as cpu-leakage.
266
267	  This driver can also be built as a module. If so, the module
268	  will be called nvmem_rockchip_efuse.
269
270config NVMEM_ROCKCHIP_OTP
271	tristate "Rockchip OTP controller 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 OTP, 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_otp.
280
281config NVMEM_SC27XX_EFUSE
282	tristate "Spreadtrum SC27XX eFuse Support"
283	depends on MFD_SC27XX_PMIC || COMPILE_TEST
284	depends on HAS_IOMEM
285	help
286	  This is a simple driver to dump specified values of Spreadtrum
287	  SC27XX PMICs from eFuse.
288
289	  This driver can also be built as a module. If so, the module
290	  will be called nvmem-sc27xx-efuse.
291
292config NVMEM_SNVS_LPGPR
293	tristate "Support for Low Power General Purpose Register"
294	depends on ARCH_MXC || COMPILE_TEST
295	help
296	  This is a driver for Low Power General Purpose Register (LPGPR) available on
297	  i.MX6 and i.MX7 SoCs in Secure Non-Volatile Storage (SNVS) of this chip.
298
299	  This driver can also be built as a module. If so, the module
300	  will be called nvmem-snvs-lpgpr.
301
302config NVMEM_SPMI_SDAM
303	tristate "SPMI SDAM Support"
304	depends on SPMI
305	help
306	  This driver supports the Shared Direct Access Memory Module on
307	  Qualcomm Technologies, Inc. PMICs. It provides the clients
308	  an interface to read/write to the SDAM module's shared memory.
309
310config NVMEM_SPRD_EFUSE
311	tristate "Spreadtrum SoC eFuse Support"
312	depends on ARCH_SPRD || COMPILE_TEST
313	depends on HAS_IOMEM
314	help
315	  This is a simple driver to dump specified values of Spreadtrum
316	  SoCs from eFuse.
317
318	  This driver can also be built as a module. If so, the module
319	  will be called nvmem-sprd-efuse.
320
321config NVMEM_STM32_BSEC_OPTEE_TA
322	def_bool NVMEM_STM32_ROMEM && OPTEE
323	help
324	  Say y here to enable the accesses to STM32MP SoC OTPs by the OP-TEE
325	  trusted application STM32MP BSEC.
326
327	  This library is a used by stm32-romem driver or included in the module
328	  called nvmem-stm32-romem.
329
330config NVMEM_STM32_ROMEM
331	tristate "STMicroelectronics STM32 factory-programmed memory support"
332	depends on ARCH_STM32 || COMPILE_TEST
333	depends on OPTEE || !OPTEE
334	help
335	  Say y here to enable read-only access for STMicroelectronics STM32
336	  factory-programmed memory area.
337
338	  This driver can also be built as a module. If so, the module
339	  will be called nvmem-stm32-romem.
340
341config NVMEM_SUNPLUS_OCOTP
342	tristate "Sunplus SoC OTP support"
343	depends on SOC_SP7021 || COMPILE_TEST
344	depends on HAS_IOMEM
345	help
346	  This is a driver for the On-chip OTP controller (OCOTP) available
347	  on Sunplus SoCs. It provides access to 128 bytes of one-time
348	  programmable eFuse.
349
350	  This driver can also be built as a module. If so, the module
351	  will be called nvmem-sunplus-ocotp.
352
353config NVMEM_SUNXI_SID
354	tristate "Allwinner SoCs SID support"
355	depends on ARCH_SUNXI
356	help
357	  This is a driver for the 'security ID' available on various Allwinner
358	  devices.
359
360	  This driver can also be built as a module. If so, the module
361	  will be called nvmem_sunxi_sid.
362
363config NVMEM_U_BOOT_ENV
364	tristate "U-Boot environment variables support"
365	depends on OF && MTD
366	select CRC32
367	select GENERIC_NET_UTILS
368	help
369	  U-Boot stores its setup as environment variables. This driver adds
370	  support for verifying & exporting such data. It also exposes variables
371	  as NVMEM cells so they can be referenced by other drivers.
372
373	  Currently this drivers works only with env variables on top of MTD.
374
375	  If compiled as module it will be called nvmem_u-boot-env.
376
377config NVMEM_UNIPHIER_EFUSE
378	tristate "UniPhier SoCs eFuse support"
379	depends on ARCH_UNIPHIER || COMPILE_TEST
380	depends on HAS_IOMEM
381	help
382	  This is a simple driver to dump specified values of UniPhier SoC
383	  from eFuse.
384
385	  This driver can also be built as a module. If so, the module
386	  will be called nvmem-uniphier-efuse.
387
388config NVMEM_VF610_OCOTP
389	tristate "VF610 SoC OCOTP support"
390	depends on SOC_VF610 || COMPILE_TEST
391	depends on HAS_IOMEM
392	help
393	  This is a driver for the 'OCOTP' peripheral available on Vybrid
394	  devices like VF5xx and VF6xx.
395
396	  This driver can also be build as a module. If so, the module will
397	  be called nvmem-vf610-ocotp.
398
399config NVMEM_ZYNQMP
400	tristate "Xilinx ZYNQMP SoC nvmem firmware support"
401	depends on ARCH_ZYNQMP
402	help
403	  This is a driver to access hardware related data like
404	  soc revision, IDCODE... etc by using the firmware
405	  interface.
406
407	  If sure, say yes. If unsure, say no.
408
409config NVMEM_QORIQ_EFUSE
410	tristate "NXP QorIQ eFuse support"
411	depends on PPC_85xx || COMPILE_TEST
412	depends on HAS_IOMEM
413	help
414	  This driver provides read support for the eFuses (SFP) on NXP QorIQ
415	  series SoC's. This includes secure boot settings, the globally unique
416	  NXP ID 'FUIDR' and the OEM unique ID 'OUIDR'.
417
418	  This driver can also be built as a module. If so, the module
419	  will be called nvmem_qoriq_efuse.
420
421endif
422