[U-Boot] [RFC PATCH 0/3] Implement "fastboot flash" for eMMC

[Lukasz Majewski <l.majewski@samsung.com>]

Hi Steve,

> This series implements the "fastboot flash" command for eMMC devices.
> It supports both raw and sparse images.
> 
> NOTES:
> - the support for the "fastboot flash" command is enabled with
> CONFIG_FASTBOOT_FLASH
> - the support for eMMC is enabled with CONFIG_FASTBOOT_FLASH_MMC_DEV
> - (future) the support for NAND would be enabled with
> CONFIG_FASTBOOT_FLASH_NAND(???)
> - thus the proposal is to place the code in common/fb_mmc.c and
> (future) common/fb_nand.c(???), however, this may not be the
> appropriate location....
> 

Would you consider another approach for providing flashing backend for
fastboot?

I'd like to propose reusing of the dfu flashing code for this purpose.
Such approach has been used successfully with USB "thor" downloading
function.

Since the "fastboot" is using gadget infrastructure (thanks to the
effort of Rob Herring) I think that it would be feasible to reuse the
same approach as "thor" does. In this way the low level code would be
kept in one place and we could refine and test it more thoroughly. 

> This has been tested on ARMv7.
> This is a WIP -- and I would appreciate some comments/advice...
> Thanks, Steve
> 
> 
> Steve Rae (3):
>   usb/gadget: fastboot: add sparse image definitions
>   usb/gadget: fastboot: add eMMC support for flash command
>   usb/gadget: fastboot: add support for flash command
> 
>  README                          |  10 +++
>  common/Makefile                 |   5 ++
>  common/fb_mmc.c                 | 144
> ++++++++++++++++++++++++++++++++++++++++
> doc/README.android-fastboot     |   5 +-
> drivers/usb/gadget/f_fastboot.c |  31 +++++++++
> include/fb_mmc.h                |   8 +++
> include/sparse_format.h         |  58 ++++++++++++++++ 7 files
> changed, 259 insertions(+), 2 deletions(-) create mode 100644
> common/fb_mmc.c create mode 100644 include/fb_mmc.h
>  create mode 100644 include/sparse_format.h
> 



-- 
Best regards,

Lukasz Majewski

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