diff --git a/common/spl/spl_mmc.c b/common/spl/spl_mmc.c
index a3d6b36cb41ace1d1519750c5eca5f49416d7d11..7dfcd0ba2a40de1a8cf293c14894ea1353a988cf 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);
+ else
+ err = 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 24f4b285a904f4b80922dd3680d0a02a881a3869..5e84a414914602767043b493af451614c46323ea 100644
--- a/drivers/mmc/Kconfig
+++ b/drivers/mmc/Kconfig
@@ -26,6 +26,21 @@ 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"
+ help
+ Enable MMC framework tinification support. This option is useful if
+ if your SPL is extremely size constrained. Heed the warning, enable
+ this option if and only if you know exactly what you are doing, if
+ you are reading this help text, you most likely have no idea :-)
+
+ The MMC framework is reduced to bare minimum to be useful. No malloc
+ support is needed for the MMC framework operation with this option
+ enabled. The framework supports exactly one MMC device and exactly
+ one MMC driver. The MMC driver can be adjusted to avoid any malloc
+ operations too, which can remove the need for malloc support in SPL
+ and thus further reduce footprint.
+
config MSM_SDHCI
bool "Qualcomm SDHCI controller"
depends on DM_MMC && BLK && DM_MMC_OPS
diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c
index 6a19bbf504118095bb70e32343bbccdf39ed3fd4..9f8368a123a119bcf2d259b1dd74c168159c6c48 100644
--- a/drivers/mmc/mmc.c
+++ b/drivers/mmc/mmc.c
@@ -30,6 +30,29 @@ static const unsigned int sd_au_size[] = {
SZ_16M / 512, (SZ_16M + SZ_8M) / 512, SZ_32M / 512, SZ_64M / 512,
};
+#if CONFIG_IS_ENABLED(MMC_TINY)
+static struct mmc mmc_static;
+struct mmc *find_mmc_device(int dev_num)
+{
+ return &mmc_static;
+}
+
+void mmc_do_preinit(void)
+{
+ struct mmc *m = &mmc_static;
+#ifdef CONFIG_FSL_ESDHC_ADAPTER_IDENT
+ mmc_set_preinit(m, 1);
+#endif
+ if (m->preinit)
+ mmc_start_init(m);
+}
+
+struct blk_desc *mmc_get_blk_desc(struct mmc *mmc)
+{
+ return &mmc->block_dev;
+}
+#endif
+
#ifndef CONFIG_DM_MMC_OPS
__weak int board_mmc_getwp(struct mmc *mmc)
{
@@ -259,7 +282,11 @@ ulong mmc_bread(struct blk_desc *block_dev, lbaint_t start, lbaint_t blkcnt,
if (!mmc)
return 0;
- err = blk_dselect_hwpart(block_dev, block_dev->hwpart);
+ if (CONFIG_IS_ENABLED(MMC_TINY))
+ err = mmc_switch_part(mmc, block_dev->hwpart);
+ else
+ err = blk_dselect_hwpart(block_dev, block_dev->hwpart);
+
if (err < 0)
return 0;
@@ -1804,7 +1831,9 @@ int mmc_initialize(bd_t *bis)
initialized = 1;
#ifndef CONFIG_BLK
+#if !CONFIG_IS_ENABLED(MMC_TINY)
mmc_list_init();
+#endif
#endif
ret = mmc_probe(bis);
if (ret)
diff --git a/drivers/mmc/mmc_legacy.c b/drivers/mmc/mmc_legacy.c
index 25361d10f60cfa04bd53724161819ca7e120c62f..bdf9d984ddfb643022d2032e574d04297922b26a 100644
--- a/drivers/mmc/mmc_legacy.c
+++ b/drivers/mmc/mmc_legacy.c
@@ -13,6 +13,7 @@
static struct list_head mmc_devices;
static int cur_dev_num = -1;
+#if !CONFIG_IS_ENABLED(MMC_TINY)
struct mmc *find_mmc_device(int dev_num)
{
struct mmc *m;
@@ -62,6 +63,7 @@ void mmc_do_preinit(void)
mmc_start_init(m);
}
}
+#endif
void mmc_list_init(void)
{
@@ -109,6 +111,35 @@ void print_mmc_devices(char separator)
void print_mmc_devices(char separator) { }
#endif
+#if CONFIG_IS_ENABLED(MMC_TINY)
+static struct mmc mmc_static = {
+ .dsr_imp = 0,
+ .dsr = 0xffffffff,
+ .block_dev = {
+ .if_type = IF_TYPE_MMC,
+ .removable = 1,
+ .devnum = 0,
+ .block_read = mmc_bread,
+ .block_write = mmc_bwrite,
+ .block_erase = mmc_berase,
+ .part_type = 0,
+ },
+};
+
+struct mmc *mmc_create(const struct mmc_config *cfg, void *priv)
+{
+ struct mmc *mmc = &mmc_static;
+
+ mmc->cfg = cfg;
+ mmc->priv = priv;
+
+ return mmc;
+}
+
+void mmc_destroy(struct mmc *mmc)
+{
+}
+#else
struct mmc *mmc_create(const struct mmc_config *cfg, void *priv)
{
struct blk_desc *bdesc;
@@ -157,6 +188,7 @@ void mmc_destroy(struct mmc *mmc)
/* only freeing memory for now */
free(mmc);
}
+#endif
static int mmc_select_hwpartp(struct blk_desc *desc, int hwpart)
{
diff --git a/include/mmc.h b/include/mmc.h
index 22853234b130f5d47d35edf3fad82d29ca973f87..1720955a4c904e8e1a30e4685059cdf2013b671a 100644
--- a/include/mmc.h
+++ b/include/mmc.h
@@ -515,6 +515,7 @@ void print_mmc_devices(char separator);
* @return 0 if there is no MMC device, else the number of devices
*/
int get_mmc_num(void);
+int mmc_switch_part(struct mmc *mmc, unsigned int part_num);
int mmc_hwpart_config(struct mmc *mmc, const struct mmc_hwpart_conf *conf,
enum mmc_hwpart_conf_mode mode);