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| author | Marek Vasut <marex@denx.de> | 2016-12-01 02:06:33 +0100 |
|---|---|---|
| committer | Jaehoon Chung <jh80.chung@samsung.com> | 2016-12-01 13:51:57 +0900 |
| commit | b5b838f1a726e9ab7eea505740e8169b55e90ed6 (patch) | |
| tree | 30c1d1b44a48d97813e9595f66850d89363992a9 /drivers/mmc/mmc.c | |
| parent | ce9eca9438d69306441060e7ac90e45d47882f34 (diff) | |
| download | u-boot-imx-b5b838f1a726e9ab7eea505740e8169b55e90ed6.zip u-boot-imx-b5b838f1a726e9ab7eea505740e8169b55e90ed6.tar.gz u-boot-imx-b5b838f1a726e9ab7eea505740e8169b55e90ed6.tar.bz2 | |
mmc: Tinification of the mmc code
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.
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Tom Rini <trini@konsulko.com>
Cc: Jaehoon Chung <jh80.chung@samsung.com>
Diffstat (limited to 'drivers/mmc/mmc.c')
| -rw-r--r-- | drivers/mmc/mmc.c | 31 |
1 files changed, 30 insertions, 1 deletions
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; |