>>>>> "S" == Stephen Warren <swar...@wwwdotorg.org> writes:
S> From: Stephen Warren <swar...@nvidia.com> S> Describe the meaning of CONFIG_ENV_IS_IN_MMC, and all related defines that S> must or can be set when using that option. S> Signed-off-by: Stephen Warren <swar...@nvidia.com> S> --- S> v2: New patch. S> --- S> README | 38 ++++++++++++++++++++++++++++++++++++++ S> 1 file changed, 38 insertions(+) S> diff --git a/README b/README S> index 3012dcd..b9936ca 100644 S> --- a/README S> +++ b/README S> @@ -3606,6 +3606,44 @@ but it can not erase, write this NOR flash by SRIO or PCIE interface. S> You will probably want to define these to avoid a really noisy system S> when storing the env in UBI. S> +- CONFIG_ENV_IS_IN_MMC: S> + S> + Define this if you have an MMC device which you want to use for the S> + environment. S> + S> + - CONFIG_SYS_MMC_ENV_DEV: S> + S> + Specifies which MMC device the environment is stored in. S> + S> + - CONFIG_SYS_MMC_ENV_PART (optional): S> + S> + Specifies which MMC partition the environment is stored in. If not S> + set, defaults to partition 0, the user area. Common values might be S> + 1 (first MMC boot partition), 2 (second MMC boot partition). S> + S> + - CONFIG_ENV_OFFSET: S> + - CONFIG_ENV_SIZE: S> + S> + These two #defines specify the offset and size of the environment S> + area within the specified MMC device. S> + S> + These two values must be aligned to an MMC sector boundary. It would be good to explicitly mention that these values are in bytes, and not sectors. S> + S> + - CONFIG_ENV_OFFSET_REDUND (optional): S> + S> + Specifies a second storage area, of CONFIG_ENV_SIZE size, used to S> + hold a redundant copy of the environment data. This provides a S> + valid backup copy in case the other copy is corrupted, e.g. due S> + to a power failure during a "saveenv" operation. S> + S> + This value must also be aligned to an MMC sector boundary. S> + S> + - CONFIG_ENV_SIZE_REDUND (optional): S> + S> + This value need not be set, even when CONFIG_ENV_OFFSET_REDUND is S> + set. If this value is set, it must be set to the same value as S> + CONFIG_ENV_OFFSET. s/CONFIG_ENV_OFFSET/CONFIG_ENV_SIZE/ -- Bye, Peter Korsgaard _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
