[Buildroot] [PATCH 1/1] boot/uboot: add support for i.MX28 NAND format
Thomas Petazzoni
thomas.petazzoni at free-electrons.com
Sat Jul 11 12:11:37 UTC 2015
Dear Jörg Krause,
On Sun, 29 Mar 2015 18:10:46 +0200, Jörg Krause wrote:
> Allow to generate 'u-boot.nand', Freescale i.MX28 BootStream format (.sb)
> with a header for booting from NAND flash.
>
> There are two possibilities when preparing an image writable to NAND flash:
> 1) The NAND was not written at all yet or the BCB (Boot Control Blocks) is
> broken. In this case, the NAND image 'u-boot.nand' needs to written.
> 2) The NAND flash was already written with a good BCB. This applies after
> 'u-boot.nand' was correctly written. There is no need to write the BCB
> again. In this case, the bootloader can be upgraded by writing 'u-boot.sb'.
>
> To satisfy both cases 'u-boot.nand' as well as the make target 'u-boot.sb' are
> copied to the binaries directory.
>
> mxsboot for NAND images needs all three parameters typed in as integer values
> (hex values do not work). The default values choosen are typical sizes for a
> NAND flash.
>
> For more information see:
> http://www.denx-cs.de/doku/?q=m28evkrunuboot
>
> Commit Note: This patch is based on top of
> "[PATCH v2 1/2] boot/uboot: add support for i.MX28 SD format"
> http://patchwork.ozlabs.org/patch/453116/
>
> ---
> Changes v1 -> v2 (all suggested by Arnout Vandecappelle):
> - Rebase on top of boot/uboot: add support for i.MX28 SD format
> http://patchwork.ozlabs.org/patch/453116/
> - Remove trailing whitespace
> - Fix typo and wrapping
> - Add an explanation like in the commit log to the help text, so the user
> knows why he gets two images (u-boot.nand and u-boot.sb) in the binaries
> directory
> - Explicitly mention in mxsboots options help text that the value has to
> be "a decimal integer value"
> - erase -> eraseblock in BR2_TARGET_UBOOT_FORMAT_NAND_ERASE_SIZE
> - Add dependency on host-elftosb
Applied, thanks.
Thomas
--
Thomas Petazzoni, CTO, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
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