7 string "Environment file to use"
10 This sets the basename to use to generate the default environment.
11 This a text file as described in doc/usage/environment.rst
13 The file must be in the board directory and have a .env extension, so
14 the resulting filename is typically
15 board/<vendor>/<board>/<CONFIG_ENV_SOURCE_FILE>.env
17 If the file is not present, an error is produced.
19 If this CONFIG is empty, U-Boot uses CONFIG SYS_BOARD as a default, if
20 the file board/<vendor>/<board>/<SYS_BOARD>.env exists. Otherwise the
21 environment is assumed to come from the ad-hoc
22 CONFIG_EXTRA_ENV_SETTINGS #define
25 def_bool y if CMD_SAVEENV
28 bool "Enable overwriting environment"
30 Use this to permit overriding of certain environmental variables
31 like Ethernet and Serial
33 config ENV_MIN_ENTRIES
34 int "Minimum number of entries in the environment hashtable"
37 Minimum number of entries in the hash table that is used internally
38 to store the environment settings.
40 config ENV_MAX_ENTRIES
41 int "Maximumm number of entries in the environment hashtable"
44 Maximum number of entries in the hash table that is used internally
45 to store the environment settings. The default setting is supposed to
46 be generous and should work in most cases. This setting can be used
47 to tune behaviour; see lib/hashtable.c for details.
50 bool "Environment is not stored"
51 default y if !ENV_IS_IN_EEPROM && !ENV_IS_IN_EXT4 && \
52 !ENV_IS_IN_FAT && !ENV_IS_IN_FLASH && \
53 !ENV_IS_IN_MMC && !ENV_IS_IN_NAND && \
54 !ENV_IS_IN_NVRAM && !ENV_IS_IN_ONENAND && \
55 !ENV_IS_IN_REMOTE && !ENV_IS_IN_SPI_FLASH && \
58 Define this if you don't want to or can't have an environment stored
59 on a storage medium. In this case the environment will still exist
60 while U-Boot is running, but once U-Boot exits it will not be
61 stored. U-Boot will therefore always start up with a default
64 config ENV_IS_IN_EEPROM
65 bool "Environment in EEPROM"
66 depends on !CHAIN_OF_TRUST
68 Use this if you have an EEPROM or similar serial access
69 device and a driver for it.
74 These two #defines specify the offset and size of the
75 environment area within the total memory of your EEPROM.
77 Note that we consider the length of the address field to
78 still be one byte because the extra address bits are hidden
81 - CONFIG_I2C_ENV_EEPROM_BUS
82 if you have an Environment on an EEPROM reached over
83 I2C muxes, you can define here, how to reach this
86 #define CONFIG_I2C_ENV_EEPROM_BUS 1
88 EEPROM which holds the environment, is reached over
89 a pca9547 i2c mux with address 0x70, channel 3.
92 bool "Environment is in a FAT filesystem"
93 depends on !CHAIN_OF_TRUST
94 default y if ARCH_BCM283X
95 default y if ARCH_SUNXI && MMC
96 default y if MMC_OMAP_HS && TI_COMMON_CMD_OPTIONS
100 Define this if you want to use the FAT file system for the environment.
102 config ENV_IS_IN_EXT4
103 bool "Environment is in a EXT4 filesystem"
104 depends on !CHAIN_OF_TRUST
108 Define this if you want to use the EXT4 file system for the environment.
110 config ENV_IS_IN_FLASH
111 bool "Environment in flash memory"
112 depends on !CHAIN_OF_TRUST
113 default y if ARCH_CINTEGRATOR
114 default y if ARCH_INTEGRATOR_CP
115 default y if M548x || M547x || M5282
116 default y if MCF532x || MCF52x2
117 default y if MPC86xx || MPC83xx
118 default y if ARCH_MPC8548
119 default y if SH && !CPU_SH4
121 Define this if you have a flash device which you want to use for the
124 a) The environment occupies one whole flash sector, which is
125 "embedded" in the text segment with the U-Boot code. This
126 happens usually with "bottom boot sector" or "top boot
127 sector" type flash chips, which have several smaller
128 sectors at the start or the end. For instance, such a
129 layout can have sector sizes of 8, 2x4, 16, Nx32 kB. In
130 such a case you would place the environment in one of the
131 4 kB sectors - with U-Boot code before and after it. With
132 "top boot sector" type flash chips, you would put the
133 environment in one of the last sectors, leaving a gap
134 between U-Boot and the environment.
138 Offset of environment data (variable area) to the
139 beginning of flash memory; for instance, with bottom boot
140 type flash chips the second sector can be used: the offset
141 for this sector is given here.
143 CONFIG_ENV_OFFSET is used relative to CONFIG_SYS_FLASH_BASE.
147 This is just another way to specify the start address of
148 the flash sector containing the environment (instead of
151 CONFIG_ENV_SECT_SIZE:
153 Size of the sector containing the environment.
156 b) Sometimes flash chips have few, equal sized, BIG sectors.
157 In such a case you don't want to spend a whole sector for
162 If you use this in combination with CONFIG_ENV_IS_IN_FLASH
163 and CONFIG_ENV_SECT_SIZE, you can specify to use only a part
164 of this flash sector for the environment. This saves
165 memory for the RAM copy of the environment.
167 It may also save flash memory if you decide to use this
168 when your environment is "embedded" within U-Boot code,
169 since then the remainder of the flash sector could be used
170 for U-Boot code. It should be pointed out that this is
171 STRONGLY DISCOURAGED from a robustness point of view:
172 updating the environment in flash makes it always
173 necessary to erase the WHOLE sector. If something goes
174 wrong before the contents has been restored from a copy in
175 RAM, your target system will be dead.
177 CONFIG_ENV_ADDR_REDUND
179 These settings describe a second storage area used to hold
180 a redundant copy of the environment data, so that there is
181 a valid backup copy in case there is a power failure during
182 a "saveenv" operation.
184 BE CAREFUL! Any changes to the flash layout, and some changes to the
185 source code will make it necessary to adapt <board>/u-boot.lds*
189 bool "Environment in an MMC device"
190 depends on !CHAIN_OF_TRUST
192 default y if ARCH_EXYNOS4
193 default y if MX6SX || MX7D
194 default y if TEGRA30 || TEGRA124
195 default y if TEGRA_ARMV8_COMMON
197 Define this if you have an MMC device which you want to use for the
200 CONFIG_SYS_MMC_ENV_DEV:
202 Specifies which MMC device the environment is stored in.
204 CONFIG_SYS_MMC_ENV_PART (optional):
206 Specifies which MMC partition the environment is stored in. If not
207 set, defaults to partition 0, the user area. Common values might be
208 1 (first MMC boot partition), 2 (second MMC boot partition).
213 These two #defines specify the offset and size of the environment
214 area within the specified MMC device.
216 If offset is positive (the usual case), it is treated as relative to
217 the start of the MMC partition. If offset is negative, it is treated
218 as relative to the end of the MMC partition. This can be useful if
219 your board may be fitted with different MMC devices, which have
220 different sizes for the MMC partitions, and you always want the
221 environment placed at the very end of the partition, to leave the
222 maximum possible space before it, to store other data.
224 These two values are in units of bytes, but must be aligned to an
227 CONFIG_ENV_OFFSET_REDUND (optional):
229 Specifies a second storage area, of CONFIG_ENV_SIZE size, used to
230 hold a redundant copy of the environment data. This provides a
231 valid backup copy in case the other copy is corrupted, e.g. due
232 to a power failure during a "saveenv" operation.
234 This value may also be positive or negative; this is handled in the
235 same way as CONFIG_ENV_OFFSET.
237 In case CONFIG_SYS_MMC_ENV_PART is 1 (i.e. environment in eMMC boot
238 partition) then setting CONFIG_ENV_OFFSET_REDUND to the same value
239 as CONFIG_ENV_OFFSET makes use of the second eMMC boot partition for
240 the redundant environment copy.
242 This value is also in units of bytes, but must also be aligned to
243 an MMC sector boundary.
245 config ENV_IS_IN_NAND
246 bool "Environment in a NAND device"
247 depends on !CHAIN_OF_TRUST
249 Define this if you have a NAND device which you want to use for the
255 These two #defines specify the offset and size of the environment
256 area within the first NAND device. CONFIG_ENV_OFFSET must be
257 aligned to an erase block boundary.
259 - CONFIG_ENV_OFFSET_REDUND (optional):
261 This setting describes a second storage area of CONFIG_ENV_SIZE
262 size used to hold a redundant copy of the environment data, so
263 that there is a valid backup copy in case there is a power failure
264 during a "saveenv" operation. CONFIG_ENV_OFFSET_REDUND must be
265 aligned to an erase block boundary.
267 - CONFIG_ENV_OFFSET_OOB (optional):
269 Enables support for dynamically retrieving the offset of the
270 environment from block zero's out-of-band data. The
271 "nand env.oob" command can be used to record this offset.
272 Currently, CONFIG_ENV_OFFSET_REDUND is not supported when
273 using CONFIG_ENV_OFFSET_OOB.
276 hex "Length of the region in which the environment can be written"
277 depends on ENV_IS_IN_NAND
278 range ENV_SIZE 0x7fffffff
281 This should be a multiple of the NAND device's block size.
282 Specifying a range with more erase blocks than are needed to hold
283 CONFIG_ENV_SIZE allows bad blocks within the range to be avoided.
285 config ENV_IS_IN_NVRAM
286 bool "Environment in a non-volatile RAM"
287 depends on !CHAIN_OF_TRUST
289 Define this if you have some non-volatile memory device
290 (NVRAM, battery buffered SRAM) which you want to use for the
296 These two #defines are used to determine the memory area you
297 want to use for environment. It is assumed that this memory
298 can just be read and written to, without any special
301 config ENV_IS_IN_ONENAND
302 bool "Environment is in OneNAND"
303 depends on !CHAIN_OF_TRUST
305 Define this if you want to put your local device's environment in
311 These two #defines are used to determine the device range you
312 want to use for environment. It is assumed that this memory
313 can just be read and written to, without any special
316 config ENV_IS_IN_REMOTE
317 bool "Environment is in remote memory space"
318 depends on !CHAIN_OF_TRUST
320 Define this if you have a remote memory space which you
321 want to use for the local device's environment.
326 These two #defines specify the address and size of the
327 environment area within the remote memory space. The
328 local device can get the environment from remote memory
329 space by SRIO or PCIE links.
331 config ENV_IS_IN_SPI_FLASH
332 bool "Environment is in SPI flash"
333 depends on !CHAIN_OF_TRUST && SPI
334 default y if ARMADA_XP
335 default y if INTEL_BAYTRAIL
336 default y if INTEL_BRASWELL
337 default y if INTEL_BROADWELL
338 default y if NORTHBRIDGE_INTEL_IVYBRIDGE
339 default y if INTEL_QUARK
340 default y if INTEL_QUEENSBAY
341 default y if ARCH_SUNXI
343 Define this if you have a SPI Flash memory device which you
344 want to use for the environment.
349 These two #defines specify the offset and size of the
350 environment area within the SPI Flash. CONFIG_ENV_OFFSET must be
351 aligned to an erase sector boundary.
353 - CONFIG_ENV_SECT_SIZE:
355 Define the SPI flash's sector size.
357 - CONFIG_ENV_OFFSET_REDUND (optional):
359 This setting describes a second storage area of CONFIG_ENV_SIZE
360 size used to hold a redundant copy of the environment data, so
361 that there is a valid backup copy in case there is a power failure
362 during a "saveenv" operation. CONFIG_ENV_OFFSET_REDUND must be
363 aligned to an erase sector boundary.
365 config ENV_SECT_SIZE_AUTO
366 bool "Use automatically detected sector size"
367 depends on ENV_IS_IN_SPI_FLASH
369 Some boards exist in multiple variants, with different
370 flashes having different sector sizes. In such cases, you
371 can select this option to make U-Boot use the actual sector
372 size when figuring out how much to erase, which can thus be
373 more efficient on the flashes with smaller erase size. Since
374 the environment must always be aligned on a sector boundary,
375 CONFIG_ENV_OFFSET must be aligned to the largest of the
376 different sector sizes, and CONFIG_ENV_SECT_SIZE should be
380 int "Value of SPI flash bus for environment"
381 depends on ENV_IS_IN_SPI_FLASH
382 default SF_DEFAULT_BUS
384 Value the SPI bus and chip select for environment.
387 int "Value of SPI flash chip select for environment"
388 depends on ENV_IS_IN_SPI_FLASH
389 default SF_DEFAULT_CS
391 Value of the SPI chip select for environment.
393 config ENV_SPI_MAX_HZ
394 int "Value of SPI flash max frequency for environment"
395 depends on ENV_IS_IN_SPI_FLASH
396 default SF_DEFAULT_SPEED
398 Value of the SPI max work clock for environment.
401 hex "Value of SPI flash work mode for environment"
402 depends on ENV_IS_IN_SPI_FLASH
403 default SF_DEFAULT_MODE
405 Value of the SPI work mode for environment.
406 See include/spi.h for value.
409 bool "Access Environment in SPI flashes before relocation"
410 depends on ENV_IS_IN_SPI_FLASH
412 Enable this if you want to use Environment in SPI flash
413 before relocation. Call env_init() and than you can use
414 env_get_f() for accessing Environment variables.
417 bool "Environment in a UBI volume"
418 depends on !CHAIN_OF_TRUST
422 Define this if you have an UBI volume that you want to use for the
423 environment. This has the benefit of wear-leveling the environment
424 accesses, which is important on NAND.
426 - CONFIG_ENV_UBI_PART:
428 Define this to a string that is the mtd partition containing the UBI.
430 - CONFIG_ENV_UBI_VOLUME:
432 Define this to the name of the volume that you want to store the
435 - CONFIG_ENV_UBI_VOLUME_REDUND:
437 Define this to the name of another volume to store a second copy of
438 the environment in. This will enable redundant environments in UBI.
439 It is assumed that both volumes are in the same MTD partition.
441 config SYS_REDUNDAND_ENVIRONMENT
442 bool "Enable redundant environment support"
444 Normally, the environemt is stored in a single location. By
445 selecting this option, you can then define where to hold a redundant
446 copy of the environment data, so that there is a valid backup copy in
447 case there is a power failure during a "saveenv" operation.
448 Also this config changes the binary environment structure handling
449 which is used by env import/export commands which are independent of
450 storing variables to redundant location on a non volatile device.
452 config ENV_FAT_INTERFACE
453 string "Name of the block device for the environment"
454 depends on ENV_IS_IN_FAT
457 Define this to a string that is the name of the block device.
459 config ENV_FAT_DEVICE_AND_PART
460 string "Device and partition for where to store the environemt in FAT"
461 depends on ENV_IS_IN_FAT
462 default "0:1" if TI_COMMON_CMD_OPTIONS
463 default "0:auto" if ARCH_ZYNQ || ARCH_ZYNQMP || ARCH_VERSAL
464 default ":auto" if ARCH_SUNXI
465 default "0" if ARCH_AT91
467 Define this to a string to specify the partition of the device. It can
470 "D:P", "D:0", "D", "D:" or "D:auto" (D, P are integers. And P >= 1)
471 - "D:P": device D partition P. Error occurs if device D has no
474 - "D" or "D:": device D partition 1 if device D has partition
475 table, or the whole device D if has no partition
477 - "D:auto": first partition in device D with bootable flag set.
478 If none, first valid partition in device D. If no
479 partition table then means device D.
481 If ENV_FAT_INTERFACE is set to "mmc" then device 'D' can be omitted,
482 leaving the string starting with a colon, and the boot device will
486 string "Name of the FAT file to use for the environment"
487 depends on ENV_IS_IN_FAT
490 It's a string of the FAT file name. This file use to store the
493 config ENV_FAT_FILE_REDUND
494 string "Name of the FAT file to use for the environment"
495 depends on ENV_IS_IN_FAT && SYS_REDUNDAND_ENVIRONMENT
496 default "uboot-redund.env"
498 It's a string of the FAT file name. This file use to store the
499 redundant environment.
501 config ENV_EXT4_INTERFACE
502 string "Name of the block device for the environment"
503 depends on ENV_IS_IN_EXT4
505 Define this to a string that is the name of the block device.
507 config ENV_EXT4_DEVICE_AND_PART
508 string "Device and partition for where to store the environemt in EXT4"
509 depends on ENV_IS_IN_EXT4
511 Define this to a string to specify the partition of the device. It can
514 "D:P", "D:0", "D", "D:" or "D:auto" (D, P are integers. And P >= 1)
515 - "D:P": device D partition P. Error occurs if device D has no
518 - "D" or "D:": device D partition 1 if device D has partition
519 table, or the whole device D if has no partition
521 - "D:auto": first partition in device D with bootable flag set.
522 If none, first valid partition in device D. If no
523 partition table then means device D.
525 If ENV_EXT4_INTERFACE is set to "mmc" then device 'D' can be omitted,
526 leaving the string starting with a colon, and the boot device will
530 string "Name of the EXT4 file to use for the environment"
531 depends on ENV_IS_IN_EXT4
534 It's a string of the EXT4 file name. This file use to store the
535 environment (explicit path to the file)
538 hex "Environment address"
539 depends on ENV_IS_IN_FLASH || ENV_IS_IN_NVRAM || ENV_IS_IN_ONENAND || \
540 ENV_IS_IN_REMOTE || ENV_IS_IN_SPI_FLASH
541 default 0x0 if ENV_IS_IN_SPI_FLASH
543 Offset from the start of the device (or partition)
545 config ENV_ADDR_REDUND
546 hex "Redundant environment address"
547 depends on ENV_IS_IN_FLASH && SYS_REDUNDAND_ENVIRONMENT
549 Offset from the start of the device (or partition) of the redundant
550 environment location.
553 hex "Environment offset"
554 depends on ENV_IS_IN_EEPROM || ENV_IS_IN_MMC || ENV_IS_IN_NAND || \
556 default 0x3f8000 if ARCH_ROCKCHIP && ENV_IS_IN_MMC
557 default 0x140000 if ARCH_ROCKCHIP && ENV_IS_IN_SPI_FLASH
558 default 0xF0000 if ARCH_SUNXI
559 default 0xE0000 if ARCH_ZYNQ
560 default 0x1E00000 if ARCH_ZYNQMP
561 default 0x7F40000 if ARCH_VERSAL
563 default 0x140000 if ARCH_AT91
564 default 0x260000 if ARCH_OMAP2PLUS
565 default 0x1080000 if MICROBLAZE && ENV_IS_IN_SPI_FLASH
567 Offset from the start of the device (or partition)
569 config ENV_OFFSET_REDUND
570 hex "Redundant environment offset"
571 depends on (ENV_IS_IN_EEPROM || ENV_IS_IN_MMC || ENV_IS_IN_NAND || \
572 ENV_IS_IN_SPI_FLASH) && SYS_REDUNDAND_ENVIRONMENT
575 Offset from the start of the device (or partition) of the redundant
576 environment location.
579 hex "Environment Size"
580 default 0x40000 if ENV_IS_IN_SPI_FLASH && ARCH_ZYNQMP
581 default 0x20000 if ARCH_ZYNQ || ARCH_OMAP2PLUS || ARCH_AT91
582 default 0x10000 if ARCH_SUNXI
583 default 0x8000 if ARCH_ROCKCHIP && ENV_IS_IN_MMC
584 default 0x2000 if ARCH_ROCKCHIP && ENV_IS_IN_SPI_FLASH
585 default 0x8000 if ARCH_ZYNQMP || ARCH_VERSAL
586 default 0x4000 if ARC
589 Size of the environment storage area
592 hex "Environment Sector-Size"
593 depends on ENV_IS_IN_FLASH || ENV_IS_IN_SPI_FLASH
594 default 0x2000 if ARCH_ROCKCHIP
595 default 0x40000 if ARCH_ZYNQMP || ARCH_VERSAL
596 default 0x20000 if ARCH_ZYNQ || ARCH_OMAP2PLUS || ARCH_AT91
597 default 0x20000 if MICROBLAZE && ENV_IS_IN_SPI_FLASH
598 default 0x10000 if ARCH_SUNXI && ENV_IS_IN_SPI_FLASH
600 Size of the sector containing the environment.
603 string "UBI partition name"
604 depends on ENV_IS_IN_UBI
606 MTD partition containing the UBI device
608 config ENV_UBI_VOLUME
609 string "UBI volume name"
610 depends on ENV_IS_IN_UBI
612 Name of the volume that you want to store the environment in.
614 config ENV_UBI_VOLUME_REDUND
615 string "UBI redundant volume name"
616 depends on ENV_IS_IN_UBI && SYS_REDUNDAND_ENVIRONMENT
618 Name of the redundant volume that you want to store the environment in.
620 config ENV_UBI_VID_OFFSET
621 int "ubi environment VID offset"
622 depends on ENV_IS_IN_UBI
625 UBI VID offset for environment. If 0, no custom VID offset is used.
627 config SYS_RELOC_GD_ENV_ADDR
628 bool "Relocate gd->env_addr"
630 Relocate the early env_addr pointer so we know it is not inside
631 the binary. Some systems need this and for the rest, it doesn't hurt.
633 config SYS_MMC_ENV_DEV
634 int "mmc device number"
635 depends on ENV_IS_IN_MMC || ENV_IS_IN_FAT || SYS_LS_PPA_FW_IN_MMC || \
636 CMD_MVEBU_BUBT || FMAN_ENET || QE || PHY_CORTINA
639 MMC device number on the platform where the environment is stored.
641 config SYS_MMC_ENV_PART
642 int "mmc partition number"
643 depends on ENV_IS_IN_MMC || ENV_IS_IN_FAT
646 MMC hardware partition device number on the platform where the
647 environment is stored. Note that this is not related to any software
648 defined partition table but instead if we are in the user area, which is
649 partition 0 or the first boot partition, which is 1 or some other defined
652 config USE_DEFAULT_ENV_FILE
653 bool "Create default environment from file"
655 Normally, the default environment is automatically generated
656 based on the settings of various CONFIG_* options, as well
657 as the CONFIG_EXTRA_ENV_SETTINGS. By selecting this option,
658 you can instead define the entire default environment in an
661 config DEFAULT_ENV_FILE
662 string "Path to default environment file"
663 depends on USE_DEFAULT_ENV_FILE
665 The path containing the default environment. The format is
666 the same as accepted by the mkenvimage tool: lines
667 containing key=value pairs, blank lines and lines beginning
670 config ENV_VARS_UBOOT_RUNTIME_CONFIG
671 bool "Add run-time information to the environment"
673 Enable this in order to add variables describing certain
674 run-time determined information about the hardware to the
675 environment. These will be named board_name, board_rev.
677 config DELAY_ENVIRONMENT
678 bool "Delay environment loading"
679 depends on !OF_CONTROL
681 Enable this to inhibit loading the environment during board
682 initialization. This can address the security risk of untrusted data
683 being used during boot. Normally the environment is loaded when the
684 board is initialised so that it is available to U-Boot. This inhibits
685 that so that the environment is not available until explicitly loaded
686 later by U-Boot code. With CONFIG_OF_CONTROL this is instead
687 controlled by the value of /config/load-environment.
689 config ENV_IMPORT_FDT
690 bool "Amend environment by FDT properties"
691 depends on OF_CONTROL
693 If selected, after the environment has been loaded from its
694 persistent location, the "env_fdt_path" variable is looked
695 up and used as a path to a node in the control DTB. The
696 property/value pairs in that node is then used to update the
697 run-time environment. This can be useful to use the same
698 U-Boot binary with different board variants.
701 string "Default value for env_fdt_path variable"
702 depends on ENV_IMPORT_FDT
703 default "/config/environment"
705 The initial value of the env_fdt_path variable.
708 bool "Always append the environment with new data"
710 If defined, the environment hash table is only ever appended with new
711 data, but the existing hash table can never be dropped and reloaded
712 with newly imported data. This may be used in combination with static
713 flags to e.g. to protect variables which must not be modified.
715 config ENV_WRITEABLE_LIST
716 bool "Permit write access only to listed variables"
718 If defined, only environment variables which explicitly set the 'w'
719 writeable flag can be written and modified at runtime. No variables
720 can be otherwise created, written or imported into the environment.
722 config ENV_ACCESS_IGNORE_FORCE
723 bool "Block forced environment operations"
725 If defined, don't allow the -f switch to env set override variable
729 config SPL_ENV_IS_NOWHERE
730 bool "SPL Environment is not stored"
731 default y if ENV_IS_NOWHERE
733 Similar to ENV_IS_NOWHERE, used for SPL environment.
735 config SPL_ENV_IS_IN_MMC
736 bool "SPL Environment in an MMC device"
737 depends on !SPL_ENV_IS_NOWHERE
738 depends on ENV_IS_IN_MMC
741 Similar to ENV_IS_IN_MMC, used for SPL environment.
743 config SPL_ENV_IS_IN_FAT
744 bool "SPL Environment is in a FAT filesystem"
745 depends on !SPL_ENV_IS_NOWHERE
746 depends on ENV_IS_IN_FAT
749 Similar to ENV_IS_IN_FAT, used for SPL environment.
751 config SPL_ENV_IS_IN_EXT4
752 bool "SPL Environment is in a EXT4 filesystem"
753 depends on !SPL_ENV_IS_NOWHERE
754 depends on ENV_IS_IN_EXT4
757 Similar to ENV_IS_IN_EXT4, used for SPL environment.
759 config SPL_ENV_IS_IN_NAND
760 bool "SPL Environment in a NAND device"
761 depends on !SPL_ENV_IS_NOWHERE
762 depends on ENV_IS_IN_NAND
765 Similar to ENV_IS_IN_NAND, used for SPL environment.
767 config SPL_ENV_IS_IN_SPI_FLASH
768 bool "SPL Environment is in SPI flash"
769 depends on !SPL_ENV_IS_NOWHERE
770 depends on ENV_IS_IN_SPI_FLASH
773 Similar to ENV_IS_IN_SPI_FLASH, used for SPL environment.
775 config SPL_ENV_IS_IN_FLASH
776 bool "SPL Environment in flash memory"
777 depends on !SPL_ENV_IS_NOWHERE
778 depends on ENV_IS_IN_FLASH
781 Similar to ENV_IS_IN_FLASH, used for SPL environment.
787 config TPL_ENV_IS_NOWHERE
788 bool "TPL Environment is not stored"
789 default y if ENV_IS_NOWHERE
791 Similar to ENV_IS_NOWHERE, used for TPL environment.
793 config TPL_ENV_IS_IN_MMC
794 bool "TPL Environment in an MMC device"
795 depends on !TPL_ENV_IS_NOWHERE
796 depends on ENV_IS_IN_MMC
799 Similar to ENV_IS_IN_MMC, used for TPL environment.
801 config TPL_ENV_IS_IN_FAT
802 bool "TPL Environment is in a FAT filesystem"
803 depends on !TPL_ENV_IS_NOWHERE
804 depends on ENV_IS_IN_FAT
807 Similar to ENV_IS_IN_FAT, used for TPL environment.
809 config TPL_ENV_IS_IN_EXT4
810 bool "TPL Environment is in a EXT4 filesystem"
811 depends on !TPL_ENV_IS_NOWHERE
812 depends on ENV_IS_IN_EXT4
815 Similar to ENV_IS_IN_EXT4, used for TPL environment.
817 config TPL_ENV_IS_IN_NAND
818 bool "TPL Environment in a NAND device"
819 depends on !TPL_ENV_IS_NOWHERE
820 depends on ENV_IS_IN_NAND
823 Similar to ENV_IS_IN_NAND, used for TPL environment.
825 config TPL_ENV_IS_IN_SPI_FLASH
826 bool "TPL Environment is in SPI flash"
827 depends on !TPL_ENV_IS_NOWHERE
828 depends on ENV_IS_IN_SPI_FLASH
831 Similar to ENV_IS_IN_SPI_FLASH, used for TPL environment.
833 config TPL_ENV_IS_IN_FLASH
834 bool "TPL Environment in flash memory"
835 depends on !TPL_ENV_IS_NOWHERE
836 depends on ENV_IS_IN_FLASH
839 Similar to ENV_IS_IN_FLASH, used for TPL environment.
844 bool "Add a 'bootfile' environment variable"
846 The "bootfile" variable is used in some cases to allow for
847 controlling what file U-Boot will attempt to load and boot. To set
848 this, enable this option and set the value in the next question.
851 string "'bootfile' environment variable value"
852 depends on USE_BOOTFILE
854 The value to set the "bootfile" variable to.
857 bool "Add an 'ethprime' environment variable"
859 The "ethprime" variable is used in some cases to control which
860 network interface is used first.
863 string "'ethprime' environment variable value"
864 depends on USE_ETHPRIME
866 The value to set the "ethprime" variable to.
868 config VERSION_VARIABLE
869 bool "Add a 'ver' environment variable with the U-Boot version"
871 If this variable is defined, an environment variable
872 named "ver" is created by U-Boot showing the U-Boot
873 version as printed by the "version" command.
874 Any change to this variable will be reverted at the