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author | Lukasz Majewski <l.majewski@samsung.com> | 2013-03-05 12:10:17 +0100 |
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committer | Marek Vasut <marex@denx.de> | 2013-03-18 18:58:53 +0100 |
commit | b528f71394038e593a116bd70f6409fabd147ea6 (patch) | |
tree | a03ed4c2e01df789db55ad211b70d6ac93c517f3 /common | |
parent | b4d36f6809f3029b6fe05d523abb13c6fa76450a (diff) | |
download | u-boot-b528f71394038e593a116bd70f6409fabd147ea6.zip u-boot-b528f71394038e593a116bd70f6409fabd147ea6.tar.gz u-boot-b528f71394038e593a116bd70f6409fabd147ea6.tar.bz2 |
usb:gadget: USB Mass Storage Gadget support
This patch adds the USB Mass Storage Gadget to u-boot
New command called "ums" is implemented to provide access
to on-device embedded persistent memory.
USB Mass Storage is supposed to work on top of the USB
Gadget framework
Signed-off-by: Lukasz Majewski <l.majewski@samsung.com>
Signed-off-by: Piotr Wilczek <p.wilczek@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
CC: Marek Vasut <marek.vasut@gmail.com>
Diffstat (limited to 'common')
-rw-r--r-- | common/Makefile | 1 | ||||
-rw-r--r-- | common/cmd_usb_mass_storage.c | 86 |
2 files changed, 87 insertions, 0 deletions
diff --git a/common/Makefile b/common/Makefile index 08af1a8..1abf4ea 100644 --- a/common/Makefile +++ b/common/Makefile @@ -179,6 +179,7 @@ COBJS-y += cmd_usb.o COBJS-y += usb.o usb_hub.o COBJS-$(CONFIG_USB_STORAGE) += usb_storage.o endif +COBJS-$(CONFIG_CMD_USB_MASS_STORAGE) += cmd_usb_mass_storage.o COBJS-$(CONFIG_CMD_XIMG) += cmd_ximg.o COBJS-$(CONFIG_YAFFS2) += cmd_yaffs2.o COBJS-$(CONFIG_CMD_SPL) += cmd_spl.o diff --git a/common/cmd_usb_mass_storage.c b/common/cmd_usb_mass_storage.c new file mode 100644 index 0000000..87a5f2f --- /dev/null +++ b/common/cmd_usb_mass_storage.c @@ -0,0 +1,86 @@ +/* + * Copyright (C) 2011 Samsung Electronics + * Lukasz Majewski <l.majewski@samsung.com> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include <errno.h> +#include <common.h> +#include <command.h> +#include <g_dnl.h> +#include <usb_mass_storage.h> + +int do_usb_mass_storage(cmd_tbl_t *cmdtp, int flag, + int argc, char * const argv[]) +{ + char *ep; + unsigned int dev_num = 0, offset = 0, part_size = 0; + int rc; + + struct ums_board_info *ums_info; + static char *s = "ums"; + + if (argc < 2) { + printf("usage: ums <dev> - e.g. ums 0\n"); + return 0; + } + + dev_num = (int)simple_strtoul(argv[1], &ep, 16); + + if (dev_num) { + puts("\nSet eMMC device to 0! - e.g. ums 0\n"); + goto fail; + } + + board_usb_init(); + ums_info = board_ums_init(dev_num, offset, part_size); + + if (!ums_info) { + printf("MMC: %d -> NOT available\n", dev_num); + goto fail; + } + rc = fsg_init(ums_info); + if (rc) { + printf("cmd ums: fsg_init failed\n"); + goto fail; + } + + g_dnl_register(s); + + while (1) { + /* Handle control-c and timeouts */ + if (ctrlc()) { + printf("The remote end did not respond in time.\n"); + goto exit; + } + usb_gadget_handle_interrupts(); + /* Check if USB cable has been detached */ + if (fsg_main_thread(NULL) == EIO) + goto exit; + } +exit: + g_dnl_unregister(); + return 0; + +fail: + return -1; +} + +U_BOOT_CMD(ums, CONFIG_SYS_MAXARGS, 1, do_usb_mass_storage, + "Use the UMS [User Mass Storage]", + "ums - User Mass Storage Gadget" +); |