diff options
| -rw-r--r-- | README | 114 | ||||
| -rw-r--r-- | common/Kconfig | 103 |
2 files changed, 101 insertions, 116 deletions
@@ -3634,75 +3634,12 @@ BE CAREFUL! For some special cases, the local device can not use environment stored in a remote NOR flash by SRIO or PCIE link, but it can not erase, write this NOR flash by SRIO or PCIE interface. -- CONFIG_ENV_IS_IN_NAND: - - 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_NAND_ENV_DST Defines address in RAM to which the nand_spl code should copy the environment. If redundant environment is used, it will be copied to CONFIG_NAND_ENV_DST + CONFIG_ENV_SIZE. -- CONFIG_ENV_IS_IN_UBI: - - 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. - - - CONFIG_UBI_SILENCE_MSG - - CONFIG_UBIFS_SILENCE_MSG - - You will probably want to define these to avoid a really noisy system - when storing the env in UBI. - - CONFIG_ENV_IS_IN_FAT: Define this if you want to use the FAT file system for the environment. @@ -3734,57 +3671,6 @@ but it can not erase, write this NOR flash by SRIO or PCIE interface. - CONFIG_FAT_WRITE: This must be enabled. Otherwise it cannot save the environment file. -- CONFIG_ENV_IS_IN_MMC: - - 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. - Please note that the environment is read-only until the monitor has been relocated to RAM and a RAM copy of the environment has been created; also, when using EEPROM you will have to use getenv_f() diff --git a/common/Kconfig b/common/Kconfig index e06089b810b..de7584f7783 100644 --- a/common/Kconfig +++ b/common/Kconfig @@ -184,6 +184,52 @@ config ENV_IS_IN_MMC 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 @@ -191,12 +237,65 @@ config ENV_IS_IN_NAND 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_UBI bool "Environment in a UBI volume" depends on !CHAIN_OF_TRUST help - Define this if you have a UBI volume which you want to use for the - environment. + 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. + + - CONFIG_UBI_SILENCE_MSG + - CONFIG_UBIFS_SILENCE_MSG + + You will probably want to define these to avoid a really noisy system + when storing the env in UBI. config ENV_IS_NOWHERE bool "Environment is not stored" |