diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mmc/Kconfig | 15 | ||||
| -rw-r--r-- | drivers/mmc/mmc.c | 31 | ||||
| -rw-r--r-- | drivers/mmc/mmc_legacy.c | 32 |
3 files changed, 77 insertions, 1 deletions
diff --git a/drivers/mmc/Kconfig b/drivers/mmc/Kconfig index 24f4b28..5e84a41 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 6a19bbf..9f8368a 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; @@ -1804,8 +1831,10 @@ 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) return ret; diff --git a/drivers/mmc/mmc_legacy.c b/drivers/mmc/mmc_legacy.c index 25361d1..bdf9d98 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) { |