This patch improves device command for selecting mmc device

Signed-off-by: Minkyu Kang mk7.kang@samsung.com --- common/cmd_mmc.c | 61 +++++++++++++++++++++++++++++++++++++++++++++++++---- 1 files changed, 56 insertions(+), 5 deletions(-)

diff --git a/common/cmd_mmc.c b/common/cmd_mmc.c index 16c919b..fb99899 100644 --- a/common/cmd_mmc.c +++ b/common/cmd_mmc.c @@ -26,19 +26,70 @@ #include <mmc.h>

#ifndef CONFIG_GENERIC_MMC +int curr_device = -1; + int do_mmc (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) { - if (mmc_legacy_init (1) != 0) { - printf ("No MMC card found\n"); + int dev; + + if (argc < 2) { + cmd_usage(cmdtp); return 1; } + + if (strcmp(argv[1], "init") == 0) { + if (argc == 2) { + if (curr_device < 0) + dev = 1; + else + dev = curr_device; + } else if (argc == 3) { + dev = (int)simple_strtoul(argv[2], NULL, 10); + } else { + cmd_usage(cmdtp); + return 1; + } + + if (mmc_legacy_init(dev) != 0) { + puts("No MMC card found\n"); + return 1; + } + + curr_device = dev; + printf("mmc%d is available\n", curr_device); + } else if (strcmp(argv[1], "device") == 0) { + if (argc == 2) { + if (curr_device < 0) { + puts("No MMC device available\n"); + return 1; + } + } else if (argc == 3) { + dev = (int)simple_strtoul(argv[2], NULL, 10); + +#ifdef CONFIG_SYS_MMC_SET_DEV + if (mmc_set_dev(dev) != 0) + return 1; +#endif + curr_device = dev; + } else { + cmd_usage(cmdtp); + return 1; + } + + printf("mmc%d is current device\n", curr_device); + } else { + cmd_usage(cmdtp); + return 1; + } + return 0; }

U_BOOT_CMD( - mmcinit, 1, 0, do_mmc, - "init mmc card", - NULL + mmc, 3, 1, do_mmc, + "MMC sub-system", + "init [dev] - init MMC sub system\n" + "mmc device [dev] - show or set current device\n" ); #else /* !CONFIG_GENERIC_MMC */