Thanks! for the document. Reviewed-by: Jagannadha Sutradharudu Teki <jaga...@xilinx.com>
On Tue, Jul 1, 2014 at 5:00 PM, Josh Wu <josh...@atmel.com> wrote: > The option can be used to save the environment in spi flash. > Implementation code is already exist in command/env_sf.c. But > the documentation is missing. > > This patch add the details for this option to the README file. > > Signed-off-by: Josh Wu <josh...@atmel.com> > --- > README | 37 +++++++++++++++++++++++++++++++++++++ > 1 file changed, 37 insertions(+) > > diff --git a/README b/README > index fe5cacb..794cfb0 100644 > --- a/README > +++ b/README > @@ -4069,6 +4069,43 @@ to save the current settings. > environment area within the total memory of your DataFlash placed > at the specified address. > > +- CONFIG_ENV_IS_IN_SPI_FLASH: > + > + 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_RENDUND must be > + aligned to an erase sector boundary. > + > + - CONFIG_ENV_SPI_BUS (optional): > + - CONFIG_ENV_SPI_CS (optional): > + > + Define the SPI bus and chip select. If not defined they will be 0. > + > + - CONFIG_ENV_SPI_MAX_HZ (optional): > + > + Define the SPI max work clock. If not defined then use 1MHz. > + > + - CONFIG_ENV_SPI_MODE (optional): > + > + Define the SPI work mode. If not defined then use SPI_MODE_3. > + > - CONFIG_ENV_IS_IN_REMOTE: > > Define this if you have a remote memory space which you > -- > 1.7.9.5 > > _______________________________________________ > U-Boot mailing list > U-Boot@lists.denx.de > http://lists.denx.de/mailman/listinfo/u-boot -- Jagan. _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot