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menu "Environment" |
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config ENV_IS_NOWHERE bool "Environment is not stored" |
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depends on !ENV_IS_IN_EEPROM |
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depends on !ENV_IS_IN_EXT4 |
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depends on !ENV_IS_IN_FAT depends on !ENV_IS_IN_FLASH depends on !ENV_IS_IN_MMC depends on !ENV_IS_IN_NAND depends on !ENV_IS_IN_NVRAM depends on !ENV_IS_IN_ONENAND depends on !ENV_IS_IN_REMOTE |
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depends on !ENV_IS_IN_SATA |
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depends on !ENV_IS_IN_SPI_FLASH depends on !ENV_IS_IN_UBI default y |
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help Define this if you don't want to or can't have an environment stored |
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on a storage medium. In this case the environment will still exist |
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while U-Boot is running, but once U-Boot exits it will not be stored. U-Boot will therefore always start up with a default environment. |
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config ENV_DEFAULT_NOWHERE depends on !ENV_IS_NOWHERE |
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default y if IMX8MN |
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bool "Environment is not stored if no matched location" help Define this when multiple ENV locations are defined and use nowhere as default when no storage medium is matched. |
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config ENV_IS_IN_EEPROM bool "Environment in EEPROM" depends on !CHAIN_OF_TRUST help Use this if you have an EEPROM or similar serial access device and a driver for it. - CONFIG_ENV_OFFSET: - CONFIG_ENV_SIZE: These two #defines specify the offset and size of the environment area within the total memory of your EEPROM. |
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Note that we consider the length of the address field to still be one byte because the extra address bits are hidden in the chip address. |
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- CONFIG_ENV_EEPROM_IS_ON_I2C define this, if you have I2C and SPI activated, and your EEPROM, which holds the environment, is on the I2C bus. - CONFIG_I2C_ENV_EEPROM_BUS if you have an Environment on an EEPROM reached over I2C muxes, you can define here, how to reach this EEPROM. For example: #define CONFIG_I2C_ENV_EEPROM_BUS 1 EEPROM which holds the environment, is reached over a pca9547 i2c mux with address 0x70, channel 3. config ENV_IS_IN_FAT bool "Environment is in a FAT filesystem" depends on !CHAIN_OF_TRUST |
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default y if ARCH_BCM283X |
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default y if ARCH_SUNXI && MMC |
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default y if MMC_OMAP_HS && TI_COMMON_CMD_OPTIONS |
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select FS_FAT |
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select FAT_WRITE help |
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Define this if you want to use the FAT file system for the environment. |
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config ENV_IS_IN_EXT4 bool "Environment is in a EXT4 filesystem" depends on !CHAIN_OF_TRUST select EXT4_WRITE help Define this if you want to use the EXT4 file system for the environment. |
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config ENV_IS_IN_FLASH bool "Environment in flash memory" depends on !CHAIN_OF_TRUST |
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default y if ARCH_CINTEGRATOR default y if ARCH_INTEGRATOR_CP default y if M548x || M547x || M5282 || MCF547x_8x default y if MCF532x || MCF52x2 default y if MPC86xx || MPC83xx default y if ARCH_MPC8572 || ARCH_MPC8548 || ARCH_MPC8641 default y if SH && !CPU_SH4 |
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help Define this if you have a flash device which you want to use for the environment. a) The environment occupies one whole flash sector, which is "embedded" in the text segment with the U-Boot code. This happens usually with "bottom boot sector" or "top boot sector" type flash chips, which have several smaller sectors at the start or the end. For instance, such a layout can have sector sizes of 8, 2x4, 16, Nx32 kB. In such a case you would place the environment in one of the 4 kB sectors - with U-Boot code before and after it. With "top boot sector" type flash chips, you would put the environment in one of the last sectors, leaving a gap between U-Boot and the environment. CONFIG_ENV_OFFSET: Offset of environment data (variable area) to the beginning of flash memory; for instance, with bottom boot type flash chips the second sector can be used: the offset for this sector is given here. CONFIG_ENV_OFFSET is used relative to CONFIG_SYS_FLASH_BASE. CONFIG_ENV_ADDR: This is just another way to specify the start address of the flash sector containing the environment (instead of CONFIG_ENV_OFFSET). CONFIG_ENV_SECT_SIZE: Size of the sector containing the environment. b) Sometimes flash chips have few, equal sized, BIG sectors. In such a case you don't want to spend a whole sector for the environment. CONFIG_ENV_SIZE: If you use this in combination with CONFIG_ENV_IS_IN_FLASH and CONFIG_ENV_SECT_SIZE, you can specify to use only a part of this flash sector for the environment. This saves memory for the RAM copy of the environment. It may also save flash memory if you decide to use this when your environment is "embedded" within U-Boot code, since then the remainder of the flash sector could be used for U-Boot code. It should be pointed out that this is STRONGLY DISCOURAGED from a robustness point of view: updating the environment in flash makes it always necessary to erase the WHOLE sector. If something goes wrong before the contents has been restored from a copy in RAM, your target system will be dead. CONFIG_ENV_ADDR_REDUND CONFIG_ENV_SIZE_REDUND These settings describe a second storage area used to hold a redundant copy of the environment data, so that there is a valid backup copy in case there is a power failure during a "saveenv" operation. BE CAREFUL! Any changes to the flash layout, and some changes to the source code will make it necessary to adapt <board>/u-boot.lds* accordingly! config ENV_IS_IN_MMC bool "Environment in an MMC device" depends on !CHAIN_OF_TRUST |
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depends on MMC |
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default y if ARCH_EXYNOS4 default y if MX6SX || MX7D default y if TEGRA30 || TEGRA124 default y if TEGRA_ARMV8_COMMON |
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help Define this if you have an MMC device which you want to use for the environment. CONFIG_SYS_MMC_ENV_DEV: Specifies which MMC device the environment is stored in. CONFIG_SYS_MMC_ENV_PART (optional): Specifies which MMC partition the environment is stored in. If not set, defaults to partition 0, the user area. Common values might be 1 (first MMC boot partition), 2 (second MMC boot partition). CONFIG_ENV_OFFSET: CONFIG_ENV_SIZE: These two #defines specify the offset and size of the environment area within the specified MMC device. If offset is positive (the usual case), it is treated as relative to the start of the MMC partition. If offset is negative, it is treated as relative to the end of the MMC partition. This can be useful if your board may be fitted with different MMC devices, which have different sizes for the MMC partitions, and you always want the environment placed at the very end of the partition, to leave the maximum possible space before it, to store other data. These two values are in units of bytes, but must be aligned to an MMC sector boundary. CONFIG_ENV_OFFSET_REDUND (optional): Specifies a second storage area, of CONFIG_ENV_SIZE size, used to hold a redundant copy of the environment data. This provides a valid backup copy in case the other copy is corrupted, e.g. due to a power failure during a "saveenv" operation. This value may also be positive or negative; this is handled in the same way as CONFIG_ENV_OFFSET. This value is also in units of bytes, but must also be aligned to an MMC sector boundary. CONFIG_ENV_SIZE_REDUND (optional): This value need not be set, even when CONFIG_ENV_OFFSET_REDUND is set. If this value is set, it must be set to the same value as CONFIG_ENV_SIZE. config ENV_IS_IN_NAND bool "Environment in a NAND device" depends on !CHAIN_OF_TRUST help Define this if you have a NAND device which you want to use for the environment. - CONFIG_ENV_OFFSET: - CONFIG_ENV_SIZE: These two #defines specify the offset and size of the environment area within the first NAND device. CONFIG_ENV_OFFSET must be aligned to an erase block boundary. - CONFIG_ENV_OFFSET_REDUND (optional): This setting describes a second storage area of CONFIG_ENV_SIZE size used to hold a redundant copy of the environment data, so that there is a valid backup copy in case there is a power failure during a "saveenv" operation. CONFIG_ENV_OFFSET_REDUND must be aligned to an erase block boundary. - CONFIG_ENV_RANGE (optional): Specifies the length of the region in which the environment can be written. This should be a multiple of the NAND device's block size. Specifying a range with more erase blocks than are needed to hold CONFIG_ENV_SIZE allows bad blocks within the range to be avoided. - CONFIG_ENV_OFFSET_OOB (optional): Enables support for dynamically retrieving the offset of the environment from block zero's out-of-band data. The "nand env.oob" command can be used to record this offset. Currently, CONFIG_ENV_OFFSET_REDUND is not supported when using CONFIG_ENV_OFFSET_OOB. config ENV_IS_IN_NVRAM bool "Environment in a non-volatile RAM" depends on !CHAIN_OF_TRUST help Define this if you have some non-volatile memory device (NVRAM, battery buffered SRAM) which you want to use for the environment. - CONFIG_ENV_ADDR: - CONFIG_ENV_SIZE: These two #defines are used to determine the memory area you want to use for environment. It is assumed that this memory can just be read and written to, without any special provision. config ENV_IS_IN_ONENAND bool "Environment is in OneNAND" depends on !CHAIN_OF_TRUST help Define this if you want to put your local device's environment in OneNAND. - CONFIG_ENV_ADDR: - CONFIG_ENV_SIZE: These two #defines are used to determine the device range you want to use for environment. It is assumed that this memory can just be read and written to, without any special provision. config ENV_IS_IN_REMOTE |
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bool "Environment is in remote memory space" |
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depends on !CHAIN_OF_TRUST help Define this if you have a remote memory space which you want to use for the local device's environment. - CONFIG_ENV_ADDR: - CONFIG_ENV_SIZE: These two #defines specify the address and size of the environment area within the remote memory space. The local device can get the environment from remote memory space by SRIO or PCIE links. |
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config ENV_IS_IN_SATA bool "Environment is in SATA disk" depends on !CHAIN_OF_TRUST help Define this if you have a SATA disk device which you want to use for the environment. - CONFIG_ENV_OFFSET: - CONFIG_ENV_SIZE: These two #defines specify the offset and size of the environment area within the SATA disk. CONFIG_ENV_OFFSET must be aligned to an disk sector boundary. |
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config ENV_IS_IN_SPI_FLASH bool "Environment is in SPI flash" depends on !CHAIN_OF_TRUST |
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default y if ARMADA_XP default y if INTEL_BAYTRAIL default y if INTEL_BRASWELL default y if INTEL_BROADWELL default y if NORTHBRIDGE_INTEL_IVYBRIDGE default y if INTEL_QUARK default y if INTEL_QUEENSBAY |
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help Define this if you have a SPI Flash memory device which you want to use for the environment. - CONFIG_ENV_OFFSET: - CONFIG_ENV_SIZE: These two #defines specify the offset and size of the environment area within the SPI Flash. CONFIG_ENV_OFFSET must be aligned to an erase sector boundary. - CONFIG_ENV_SECT_SIZE: Define the SPI flash's sector size. - CONFIG_ENV_OFFSET_REDUND (optional): This setting describes a second storage area of CONFIG_ENV_SIZE size used to hold a redundant copy of the environment data, so that there is a valid backup copy in case there is a power failure during a "saveenv" operation. CONFIG_ENV_OFFSET_REDUND must be aligned to an erase sector boundary. |
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config USE_ENV_SPI_BUS bool "SPI flash bus for environment" depends on ENV_IS_IN_SPI_FLASH help Force the SPI bus for environment. If not defined, use CONFIG_SF_DEFAULT_BUS. config ENV_SPI_BUS int "Value of SPI flash bus for environment" depends on USE_ENV_SPI_BUS help Value the SPI bus and chip select for environment. config USE_ENV_SPI_CS bool "SPI flash chip select for environment" depends on ENV_IS_IN_SPI_FLASH help Force the SPI chip select for environment. If not defined, use CONFIG_SF_DEFAULT_CS. |
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config ENV_SPI_CS int "Value of SPI flash chip select for environment" depends on USE_ENV_SPI_CS help Value of the SPI chip select for environment. |
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config USE_ENV_SPI_MAX_HZ bool "SPI flash bus for environment" depends on ENV_IS_IN_SPI_FLASH help Force the SPI max work clock for environment. If not defined, use CONFIG_SF_DEFAULT_SPEED. |
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config ENV_SPI_MAX_HZ int "Value of SPI flash max work for environment" depends on USE_ENV_SPI_MAX_HZ help Value of the SPI max work clock for environment. |
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config USE_ENV_SPI_MODE bool "SPI flash mode for environment" depends on ENV_IS_IN_SPI_FLASH help Force the SPI work mode for environment. |
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config ENV_SPI_MODE hex "Value of SPI flash work mode for environment" depends on USE_ENV_SPI_MODE help Value of the SPI work mode for environment. See include/spi.h for value. |
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config ENV_IS_IN_UBI bool "Environment in a UBI volume" depends on !CHAIN_OF_TRUST help Define this if you have an UBI volume that you want to use for the environment. This has the benefit of wear-leveling the environment accesses, which is important on NAND. - CONFIG_ENV_UBI_PART: Define this to a string that is the mtd partition containing the UBI. - CONFIG_ENV_UBI_VOLUME: Define this to the name of the volume that you want to store the environment in. - CONFIG_ENV_UBI_VOLUME_REDUND: Define this to the name of another volume to store a second copy of the environment in. This will enable redundant environments in UBI. It is assumed that both volumes are in the same MTD partition. |
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config ENV_FAT_INTERFACE string "Name of the block device for the environment" depends on ENV_IS_IN_FAT |
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default "mmc" if ARCH_SUNXI |
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default "mmc" if TI_COMMON_CMD_OPTIONS || ARCH_ZYNQMP || ARCH_AT91 help Define this to a string that is the name of the block device. config ENV_FAT_DEVICE_AND_PART string "Device and partition for where to store the environemt in FAT" depends on ENV_IS_IN_FAT default "0:1" if TI_COMMON_CMD_OPTIONS default "0:auto" if ARCH_ZYNQMP |
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default "0:auto" if ARCH_SUNXI && MMC_SUNXI_SLOT_EXTRA = -1 default "1:auto" if ARCH_SUNXI && MMC_SUNXI_SLOT_EXTRA != -1 |
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default "0" if ARCH_AT91 help Define this to a string to specify the partition of the device. It can be as following: "D:P", "D:0", "D", "D:" or "D:auto" (D, P are integers. And P >= 1) - "D:P": device D partition P. Error occurs if device D has no partition table. - "D:0": device D. - "D" or "D:": device D partition 1 if device D has partition table, or the whole device D if has no partition table. - "D:auto": first partition in device D with bootable flag set. If none, first valid partition in device D. If no partition table then means device D. config ENV_FAT_FILE |
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string "Name of the FAT file to use for the environment" |
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depends on ENV_IS_IN_FAT default "uboot.env" help It's a string of the FAT file name. This file use to store the environment. |
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config ENV_EXT4_INTERFACE string "Name of the block device for the environment" depends on ENV_IS_IN_EXT4 help Define this to a string that is the name of the block device. config ENV_EXT4_DEVICE_AND_PART string "Device and partition for where to store the environemt in EXT4" depends on ENV_IS_IN_EXT4 help Define this to a string to specify the partition of the device. It can be as following: "D:P", "D:0", "D", "D:" or "D:auto" (D, P are integers. And P >= 1) - "D:P": device D partition P. Error occurs if device D has no partition table. - "D:0": device D. - "D" or "D:": device D partition 1 if device D has partition table, or the whole device D if has no partition table. - "D:auto": first partition in device D with bootable flag set. If none, first valid partition in device D. If no partition table then means device D. config ENV_EXT4_FILE |
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string "Name of the EXT4 file to use for the environment" |
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depends on ENV_IS_IN_EXT4 default "uboot.env" help It's a string of the EXT4 file name. This file use to store the environment (explicit path to the file) |
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if ARCH_ROCKCHIP || ARCH_SUNXI || ARCH_ZYNQ || ARCH_ZYNQMP || ARCH_VERSAL || ARC |
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config ENV_OFFSET hex "Environment Offset" depends on !ENV_IS_IN_UBI depends on !ENV_IS_NOWHERE |
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default 0x3f8000 if ARCH_ROCKCHIP |
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default 0x88000 if ARCH_SUNXI |
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default 0xE0000 if ARCH_ZYNQ default 0x1E00000 if ARCH_ZYNQMP |
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default 0 if ARC |
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help Offset from the start of the device (or partition) config ENV_SIZE hex "Environment Size" |
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default 0x40000 if ENV_IS_IN_SPI_FLASH && ARCH_ZYNQMP default 0x20000 if ARCH_SUNXI || ARCH_ZYNQ |
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default 0x8000 if ARCH_ROCKCHIP || ARCH_ZYNQMP || ARCH_VERSAL |
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default 0x4000 if ARC |
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help Size of the environment storage area |
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config ENV_SECT_SIZE hex "Environment Sector-Size" depends on !ENV_IS_NOWHERE && (ARCH_ZYNQ || ARCH_ZYNQMP) default 0x40000 if ARCH_ZYNQMP default 0x20000 if ARCH_ZYNQ help Size of the sector containing the environment. |
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config ENV_UBI_PART string "UBI partition name" depends on ENV_IS_IN_UBI help MTD partition containing the UBI device config ENV_UBI_VOLUME string "UBI volume name" depends on ENV_IS_IN_UBI help Name of the volume that you want to store the environment in. endif |
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config USE_DEFAULT_ENV_FILE bool "Create default environment from file" help Normally, the default environment is automatically generated based on the settings of various CONFIG_* options, as well as the CONFIG_EXTRA_ENV_SETTINGS. By selecting this option, you can instead define the entire default environment in an external file. config DEFAULT_ENV_FILE string "Path to default environment file" depends on USE_DEFAULT_ENV_FILE help The path containing the default environment. The format is the same as accepted by the mkenvimage tool: lines containing key=value pairs, blank lines and lines beginning with # are ignored. |
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config ENV_VARS_UBOOT_RUNTIME_CONFIG bool "Add run-time information to the environment" help Enable this in order to add variables describing certain run-time determined information about the hardware to the environment. These will be named board_name, board_rev. |
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if SPL_ENV_SUPPORT config SPL_ENV_IS_NOWHERE bool "SPL Environment is not stored" default y if ENV_IS_NOWHERE help Similar to ENV_IS_NOWHERE, used for SPL environment. config SPL_ENV_IS_IN_MMC bool "SPL Environment in an MMC device" depends on !SPL_ENV_IS_NOWHERE depends on ENV_IS_IN_MMC default y help Similar to ENV_IS_IN_MMC, used for SPL environment. config SPL_ENV_IS_IN_FAT bool "SPL Environment is in a FAT filesystem" depends on !SPL_ENV_IS_NOWHERE depends on ENV_IS_IN_FAT default y help Similar to ENV_IS_IN_FAT, used for SPL environment. config SPL_ENV_IS_IN_EXT4 bool "SPL Environment is in a EXT4 filesystem" depends on !SPL_ENV_IS_NOWHERE depends on ENV_IS_IN_EXT4 default y help Similar to ENV_IS_IN_EXT4, used for SPL environment. config SPL_ENV_IS_IN_NAND bool "SPL Environment in a NAND device" depends on !SPL_ENV_IS_NOWHERE depends on ENV_IS_IN_NAND default y help Similar to ENV_IS_IN_NAND, used for SPL environment. config SPL_ENV_IS_IN_SPI_FLASH bool "SPL Environment is in SPI flash" depends on !SPL_ENV_IS_NOWHERE depends on ENV_IS_IN_SPI_FLASH default y help Similar to ENV_IS_IN_SPI_FLASH, used for SPL environment. config SPL_ENV_IS_IN_FLASH bool "SPL Environment in flash memory" depends on !SPL_ENV_IS_NOWHERE depends on ENV_IS_IN_FLASH default y help Similar to ENV_IS_IN_FLASH, used for SPL environment. endif if TPL_ENV_SUPPORT config TPL_ENV_IS_NOWHERE bool "TPL Environment is not stored" default y if ENV_IS_NOWHERE help Similar to ENV_IS_NOWHERE, used for TPL environment. config TPL_ENV_IS_IN_MMC bool "TPL Environment in an MMC device" depends on !TPL_ENV_IS_NOWHERE depends on ENV_IS_IN_MMC default y help Similar to ENV_IS_IN_MMC, used for TPL environment. config TPL_ENV_IS_IN_FAT bool "TPL Environment is in a FAT filesystem" depends on !TPL_ENV_IS_NOWHERE depends on ENV_IS_IN_FAT default y help Similar to ENV_IS_IN_FAT, used for TPL environment. config TPL_ENV_IS_IN_EXT4 bool "TPL Environment is in a EXT4 filesystem" depends on !TPL_ENV_IS_NOWHERE depends on ENV_IS_IN_EXT4 default y help Similar to ENV_IS_IN_EXT4, used for TPL environment. config TPL_ENV_IS_IN_NAND bool "TPL Environment in a NAND device" depends on !TPL_ENV_IS_NOWHERE depends on ENV_IS_IN_NAND default y help Similar to ENV_IS_IN_NAND, used for TPL environment. config TPL_ENV_IS_IN_SPI_FLASH bool "TPL Environment is in SPI flash" depends on !TPL_ENV_IS_NOWHERE depends on ENV_IS_IN_SPI_FLASH default y help Similar to ENV_IS_IN_SPI_FLASH, used for TPL environment. config TPL_ENV_IS_IN_FLASH bool "TPL Environment in flash memory" depends on !TPL_ENV_IS_NOWHERE depends on ENV_IS_IN_FLASH default y help Similar to ENV_IS_IN_FLASH, used for TPL environment. endif |
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