diff options
Diffstat (limited to 'common')
| -rw-r--r-- | common/Kconfig | 7 | ||||
| -rw-r--r-- | common/Makefile | 1 | ||||
| -rw-r--r-- | common/usbgadget.c | 144 |
3 files changed, 152 insertions, 0 deletions
diff --git a/common/Kconfig b/common/Kconfig index eddd99ea3b..2ad92158c1 100644 --- a/common/Kconfig +++ b/common/Kconfig @@ -115,6 +115,13 @@ config UBIFORMAT depends on MTD_UBI default y +config USBGADGET_START + bool + depends on CMD_USBGADGET || USB_GADGET_AUTOSTART + select ENVIRONMENT_VARIABLES + select FILE_LIST + default y + config BOOT bool diff --git a/common/Makefile b/common/Makefile index 861365bd55..b617642242 100644 --- a/common/Makefile +++ b/common/Makefile @@ -64,6 +64,7 @@ obj-$(CONFIG_UBIFORMAT) += ubiformat.o obj-$(CONFIG_BAREBOX_UPDATE_IMX_NAND_FCB) += imx-bbu-nand-fcb.o obj-$(CONFIG_BOOT) += boot.o obj-$(CONFIG_SERIAL_DEV_BUS) += serdev.o +obj-$(CONFIG_USBGADGET_START) += usbgadget.o ifdef CONFIG_PASSWORD diff --git a/common/usbgadget.c b/common/usbgadget.c new file mode 100644 index 0000000000..a8f104cf1c --- /dev/null +++ b/common/usbgadget.c @@ -0,0 +1,144 @@ +/* + * Copyright (c) 2017 Oleksij Rempel <o.rempel@pengutronix.de>, Pengutronix + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 + * as published by the Free Software Foundation. + * + * 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. + * + */ +#define pr_fmt(fmt) "usbgadget: " fmt + +#include <common.h> +#include <command.h> +#include <errno.h> +#include <environment.h> +#include <malloc.h> +#include <getopt.h> +#include <fs.h> +#include <xfuncs.h> +#include <usb/usbserial.h> +#include <usb/dfu.h> +#include <usb/gadget-multi.h> +#include <globalvar.h> +#include <magicvar.h> + +static int autostart; +static int acm; +static char *dfu_function; +static char *fastboot_function; +static int fastboot_bbu; + +static struct file_list *parse(const char *files) +{ + struct file_list *list = file_list_parse(files); + if (IS_ERR(list)) { + pr_err("Parsing file list \"%s\" failed: %s\n", files, + strerrorp(list)); + return NULL; + } + return list; +} + +int usbgadget_register(bool dfu, const char *dfu_opts, + bool fastboot, const char *fastboot_opts, + bool acm, bool export_bbu) +{ + int ret; + struct device_d *dev; + struct f_multi_opts *opts; + + if (dfu && !dfu_opts && dfu_function && *dfu_function) + dfu_opts = dfu_function; + + if (fastboot && !fastboot_opts && + fastboot_function && *fastboot_function) + fastboot_opts = fastboot_function; + + if (!dfu_opts && !fastboot_opts && !acm) + return COMMAND_ERROR_USAGE; + + /* + * Creating a gadget with both DFU and Fastboot doesn't work. + * Both client tools seem to assume that the device only has + * a single configuration + */ + if (fastboot_opts && dfu_opts) { + pr_err("Only one of Fastboot and DFU allowed\n"); + return -EINVAL; + } + + opts = xzalloc(sizeof(*opts)); + opts->release = usb_multi_opts_release; + + if (fastboot_opts) { + opts->fastboot_opts.files = parse(fastboot_opts); + opts->fastboot_opts.export_bbu = export_bbu; + } + + if (dfu_opts) + opts->dfu_opts.files = parse(dfu_opts); + + if (!opts->dfu_opts.files && !opts->fastboot_opts.files && !acm) { + pr_warn("No functions to register\n"); + free(opts); + return 0; + } + + opts->create_acm = acm; + + dev = get_device_by_name("otg"); + if (dev) + dev_set_param(dev, "mode", "peripheral"); + + ret = usb_multi_register(opts); + if (ret) + usb_multi_opts_release(opts); + + return ret; +} + +static int usbgadget_autostart(void) +{ + if (!IS_ENABLED(CONFIG_USB_GADGET_AUTOSTART) || !autostart) + return 0; + + return usbgadget_register(true, NULL, true, NULL, acm, fastboot_bbu); +} +postenvironment_initcall(usbgadget_autostart); + +static int usbgadget_globalvars_init(void) +{ + if (IS_ENABLED(CONFIG_USB_GADGET_AUTOSTART)) { + globalvar_add_simple_bool("usbgadget.autostart", &autostart); + globalvar_add_simple_bool("usbgadget.acm", &acm); + globalvar_add_simple_bool("usbgadget.fastboot_bbu", + &fastboot_bbu); + } + globalvar_add_simple_string("usbgadget.dfu_function", &dfu_function); + globalvar_add_simple_string("usbgadget.fastboot_function", + &fastboot_function); + + return 0; +} +device_initcall(usbgadget_globalvars_init); + +BAREBOX_MAGICVAR_NAMED(global_usbgadget_autostart, + global.usbgadget.autostart, + "usbgadget: Automatically start usbgadget on boot"); +BAREBOX_MAGICVAR_NAMED(global_usbgadget_acm, + global.usbgadget.acm, + "usbgadget: Create CDC ACM function"); +BAREBOX_MAGICVAR_NAMED(global_usbgadget_dfu_function, + global.usbgadget.dfu_function, + "usbgadget: Create DFU function"); +BAREBOX_MAGICVAR_NAMED(global_usbgadget_fastboot_function, + global.usbgadget.fastboot_function, + "usbgadget: Create Android Fastboot function"); +BAREBOX_MAGICVAR_NAMED(global_usbgadget_fastboot_bbu, + global.usbgadget.fastboot_bbu, + "usbgadget: export barebox update handlers via fastboot"); |