[U-Boot] [PATCH v2 0/9] reduce the size of the mmc core

[Jaehoon Chung]

On 01/04/2018 11:23 PM, Jean-Jacques Hiblot wrote:
> 
> This series applies on u-boot/next
> 
> It aims at reducing the size taken by the mmc core in the SPL.
> Recent changes (for which I'm to blame) have bloated the mmc core and have
> broken platforms that were already tight on code space. This is achieved mostly
> by compiling out parts of the initialization process that are not required when
> the SD/MMC write operations are not used.
> 
> Using am335x_hs_evm_config and Linaro GCC 6.2-2016.11 toolchain, this series
> saves 624 bytes of sram (512 bytes of code and 112 bytes of rodata).
> This doesn't looks like much but it allows building the platform without
> removing features from its config file (tested with commit d2ac491
> ("am335x_hs_evm: Trim options in SPL to reduce binary size") reverted)
> 
> Changes in v2:
> - atmel_mci: fixed v1 bug by setting the block length before each transfer.
> - atmel_mci: removed loop to read/write dummy data as it is not needed anymore
> - compile out code for HS200 in mmc_get_capabilities()
> - fixed usage of CONFIG_IS_ENABLED() in the definition of mmc_blk_ops
> - default SPL_MMC_WRITE to 'n'
> - removed patch 'mmc: remove unneeded verification in mmc_set_card_speed()'
> 
> Jean-Jacques Hiblot (9):
>   common: do not compile common fastboot code when building the SPL
>   mmc: atmel: when sending a data command, use the provided block size
>   mmc: compile out more code if support for UHS and HS200 is not enabled
>   mmc: reworked version lookup in mmc_startup_v4
>   mmc: add a Kconfig option to enable the support for MMC write
>     operations
>   mmc: read ssr only if MMC write support is enabled
>   mmc: compile out erase and write mmc commands if write operations are
>     not enabled
>   mmc: don't read the size of eMMC enhanced user data area in SPL
>   mmc: remove hc_wp_grp_size from struct mmc if not needed

Applied to u-boot-mmc. Thanks!

Best Regards,
Jaehoon Chung

> 
>  cmd/mmc.c                   | 10 +++++
>  cmd/mvebu/bubt.c            |  2 +-
>  common/Makefile             |  2 +
>  common/spl/Kconfig          |  9 +++++
>  drivers/mmc/Kconfig         |  7 ++++
>  drivers/mmc/Makefile        |  4 +-
>  drivers/mmc/gen_atmel_mci.c | 42 +++++++++----------
>  drivers/mmc/mmc-uclass.c    |  2 +-
>  drivers/mmc/mmc.c           | 99 +++++++++++++++++++++++++++------------------
>  drivers/mmc/mmc_private.h   |  4 +-
>  include/mmc.h               |  8 ++++
>  11 files changed, 121 insertions(+), 68 deletions(-)
>