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| author | Stephen Warren <swarren@nvidia.com> | 2014-05-05 10:40:15 -0600 |
|---|---|---|
| committer | Lukasz Majewski <l.majewski@samsung.com> | 2014-05-08 10:38:29 +0200 |
| commit | abfe8afe88d6d8219602659f44981411e1daeb1d (patch) | |
| tree | 4d7a2b9854e83f171026dda4b3f041f08acd092a /common | |
| parent | 36ff05c4f968bf71713644413d64850e48b34145 (diff) | |
| download | u-boot-imx-abfe8afe88d6d8219602659f44981411e1daeb1d.zip u-boot-imx-abfe8afe88d6d8219602659f44981411e1daeb1d.tar.gz u-boot-imx-abfe8afe88d6d8219602659f44981411e1daeb1d.tar.bz2 | |
ums: move IO support code to common location
There's nothing Samsung-/board-specfic about the implementation of
ums_init(). Move the code into cmd_usb_mass_storage.c, so that it can
be shared by any user of that command.
Cc: Lukasz Majewski <l.majewski@samsung.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Przemyslaw Marczak <p.marczak@samsung.com>
Diffstat (limited to 'common')
| -rw-r--r-- | common/cmd_usb_mass_storage.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/common/cmd_usb_mass_storage.c b/common/cmd_usb_mass_storage.c index 31b7eb0..9888ed4 100644 --- a/common/cmd_usb_mass_storage.c +++ b/common/cmd_usb_mass_storage.c @@ -9,9 +9,55 @@ #include <common.h> #include <command.h> #include <g_dnl.h> +#include <mmc.h> +#include <part.h> #include <usb.h> #include <usb_mass_storage.h> +static int ums_read_sector(struct ums *ums_dev, + ulong start, lbaint_t blkcnt, void *buf) +{ + block_dev_desc_t *block_dev = ums_dev->block_dev; + lbaint_t blkstart = start + ums_dev->start_sector; + int dev_num = block_dev->dev; + + return block_dev->block_read(dev_num, blkstart, blkcnt, buf); +} + +static int ums_write_sector(struct ums *ums_dev, + ulong start, lbaint_t blkcnt, const void *buf) +{ + block_dev_desc_t *block_dev = ums_dev->block_dev; + lbaint_t blkstart = start + ums_dev->start_sector; + int dev_num = block_dev->dev; + + return block_dev->block_write(dev_num, blkstart, blkcnt, buf); +} + +static struct ums ums_dev = { + .read_sector = ums_read_sector, + .write_sector = ums_write_sector, + .name = "UMS disk", +}; + +struct ums *ums_init(unsigned int dev_num) +{ + struct mmc *mmc = NULL; + + mmc = find_mmc_device(dev_num); + if (!mmc || mmc_init(mmc)) + return NULL; + + ums_dev.block_dev = &mmc->block_dev; + ums_dev.start_sector = 0; + ums_dev.num_sectors = mmc->capacity / SECTOR_SIZE; + + printf("UMS: disk start sector: %#x, count: %#x\n", + ums_dev.start_sector, ums_dev.num_sectors); + + return &ums_dev; +} + int do_usb_mass_storage(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) { |