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mmc: add a Kconfig option to enable the support for MMC write operations

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This allows using CONFIG_IS_ENABLED(MMC_WRITE) to compile out code
needed only if write support is required.
The option is added for u-boot and for SPL

Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
This commit is contained in:
Jean-Jacques Hiblot 2018-01-04 15:23:32 +01:00 committed by Jaehoon Chung
parent 58a6fb7b04
commit d6400c3f85
6 changed files with 21 additions and 7 deletions
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2
cmd/mvebu/bubt.c
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@ -110,7 +110,7 @@ static ulong get_load_addr(void)
/********************************************************************
* eMMC services
********************************************************************/
#ifdef CONFIG_DM_MMC
#if CONFIG_IS_ENABLED(DM_MMC) && CONFIG_IS_ENABLED(MMC_WRITE)
static int mmc_burn_image(size_t image_size)
{
struct mmc *mmc;

9
common/spl/Kconfig
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@ -301,6 +301,7 @@ config SPL_ENV_SUPPORT
config SPL_SAVEENV
bool "Support save environment"
depends on SPL_ENV_SUPPORT
select SPL_MMC_WRITE if ENV_IS_IN_MMC
help
Enable save environment support in SPL after setenv. By default
the saveenv option is not provided in SPL, but some boards need
@ -415,6 +416,14 @@ config SPL_MMC_SUPPORT
this option to build the drivers in drivers/mmc as part of an SPL
build.
config SPL_MMC_WRITE
bool "MMC/SD/SDIO card support for write operations in SPL"
depends on SPL_MMC_SUPPORT
default n
help
Enable write access to MMC and SD Cards in SPL
config SPL_MPC8XXX_INIT_DDR_SUPPORT
bool "Support MPC8XXX DDR init"
help

7
drivers/mmc/Kconfig
View File

@ -10,6 +10,13 @@ config MMC
If you want MMC/SD/SDIO support, you should say Y here and
also to your specific host controller driver.
config MMC_WRITE
bool "support for MMC/SD write operations"
depends on MMC
default y
help
Enable write access to MMC and SD Cards
config DM_MMC
bool "Enable MMC controllers using Driver Model"
depends on DM

4
drivers/mmc/Makefile
View File

@ -7,6 +7,7 @@
obj-y += mmc.o
obj-$(CONFIG_$(SPL_)DM_MMC) += mmc-uclass.o
obj-$(CONFIG_$(SPL_)MMC_WRITE) += mmc_write.o
ifndef CONFIG_$(SPL_)BLK
obj-y += mmc_legacy.o
@ -16,9 +17,6 @@ obj-$(CONFIG_SUPPORT_EMMC_BOOT) += mmc_boot.o
ifdef CONFIG_SPL_BUILD
obj-$(CONFIG_SPL_MMC_BOOT) += fsl_esdhc_spl.o
obj-$(CONFIG_SPL_SAVEENV) += mmc_write.o
else
obj-y += mmc_write.o
endif
obj-$(CONFIG_ARM_PL180_MMCI) += arm_pl180_mmci.o

2
drivers/mmc/mmc-uclass.c
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@ -370,7 +370,7 @@ static int mmc_blk_probe(struct udevice *dev)
static const struct blk_ops mmc_blk_ops = {
.read = mmc_bread,
#ifndef CONFIG_SPL_BUILD
#if CONFIG_IS_ENABLED(MMC_WRITE)
.write = mmc_bwrite,
.erase = mmc_berase,
#endif

4
drivers/mmc/mmc_private.h
View File

@ -28,7 +28,7 @@ ulong mmc_bread(struct blk_desc *block_dev, lbaint_t start, lbaint_t blkcnt,
void *dst);
#endif
#if !(defined(CONFIG_SPL_BUILD) && !defined(CONFIG_SPL_SAVEENV))
#if CONFIG_IS_ENABLED(MMC_WRITE)
#if CONFIG_IS_ENABLED(BLK)
ulong mmc_bwrite(struct udevice *dev, lbaint_t start, lbaint_t blkcnt,
@ -40,7 +40,7 @@ ulong mmc_bwrite(struct blk_desc *block_dev, lbaint_t start, lbaint_t blkcnt,
ulong mmc_berase(struct blk_desc *block_dev, lbaint_t start, lbaint_t blkcnt);
#endif
#else /* CONFIG_SPL_BUILD and CONFIG_SPL_SAVEENV is not defined */
#else /* CONFIG_SPL_MMC_WRITE is not defined */
/* declare dummies to reduce code size. */