On 11/30/2016 01:32 AM, Simon Glass wrote:
Hi Marek,
On 25 November 2016 at 15:32, Marek Vasut marex@denx.de wrote:
Add new configuration option CONFIG_MMC_TINY which strips away all memory allocation within the MMC code and code for handling multiple cards. This allows extremely space-constrained SPL code use the MMC framework.
Signed-off-by: Marek Vasut marex@denx.de Cc: Tom Rini trini@konsulko.com Cc: Simon Glass sjg@chromium.org
V2: Switch the MMC_TINY option to Kconfig
common/spl/spl_mmc.c | 6 +++++- drivers/mmc/Kconfig | 16 ++++++++++++++++ drivers/mmc/mmc.c | 31 ++++++++++++++++++++++++++++++- drivers/mmc/mmc_legacy.c | 32 ++++++++++++++++++++++++++++++++ include/mmc.h | 1 + 5 files changed, 84 insertions(+), 2 deletions(-)
Reviewed-by: Simon Glass sjg@chromium.org
nit below.
I assume this does not use DM?
Nope, DM does not fit into those 14 kiB I have for SPL, no way.
diff --git a/common/spl/spl_mmc.c b/common/spl/spl_mmc.c index 43c1030..3cad998 100644 --- a/common/spl/spl_mmc.c +++ b/common/spl/spl_mmc.c @@ -306,7 +306,11 @@ static int spl_mmc_load_image(struct spl_image_info *spl_image, if (part == 7) part = 0;
err = blk_dselect_hwpart(mmc_get_blk_desc(mmc), part);
if (CONFIG_IS_ENABLED(MMC_TINY))err = mmc_switch_part(mmc, part);elseerr = blk_dselect_hwpart(mmc_get_blk_desc(mmc), part);if (err) {#ifdef CONFIG_SPL_LIBCOMMON_SUPPORT puts("spl: mmc partition switch failed\n"); diff --git a/drivers/mmc/Kconfig b/drivers/mmc/Kconfig index 24f4b28..aca438b8 100644 --- a/drivers/mmc/Kconfig +++ b/drivers/mmc/Kconfig @@ -26,6 +26,22 @@ config DM_MMC_OPS option will be removed as soon as all DM_MMC drivers use it, as it will the only supported behaviour.
+config SPL_MMC_TINY
bool "Tiny MMC framework in SPL"default nNot needed?
Why not ? This makes the tinification configurable and is used on the CI20 (JZ4780 horrorchip).