The "fastboot reboot-bootloader" command is defined to re-enter into fastboot mode after rebooting into bootloader. This command is usually used after updating bootloader via fastboot.
This commit implements only a generic side of the command - setting of the reset flag and then resetting. Setting of the reset flag is implemented using __weak fb_set_reboot_flag() function. The actual setting and checking of the reset flag should be implemented by a boot script and/or board/SoC specific code.
Signed-off-by: Alexey Firago alexey_firago@mentor.com ---
Changes in v3: - return -ENOSYS from default fb_set_reboot_flag()
Changes in v2: - return error in default fb_set_reboot_flag()
drivers/usb/gadget/f_fastboot.c | 13 +++++++++++++ 1 file changed, 13 insertions(+)
diff --git a/drivers/usb/gadget/f_fastboot.c b/drivers/usb/gadget/f_fastboot.c index 310175a..a000c25 100644 --- a/drivers/usb/gadget/f_fastboot.c +++ b/drivers/usb/gadget/f_fastboot.c @@ -122,6 +122,7 @@ static struct usb_gadget_strings *fastboot_strings[] = { };
static void rx_handler_command(struct usb_ep *ep, struct usb_request *req); +static int strcmp_l1(const char *s1, const char *s2);
static void fastboot_complete(struct usb_ep *ep, struct usb_request *req) { @@ -317,8 +318,20 @@ static void compl_do_reset(struct usb_ep *ep, struct usb_request *req) do_reset(NULL, 0, 0, NULL); }
+int __weak fb_set_reboot_flag(void) +{ + return -ENOSYS; +} + static void cb_reboot(struct usb_ep *ep, struct usb_request *req) { + char *cmd = req->buf; + if (!strcmp_l1("reboot-bootloader", cmd)) { + if (fb_set_reboot_flag()) { + fastboot_tx_write_str("FAILCannot set reboot flag"); + return; + } + } fastboot_func->in_req->complete = compl_do_reset; fastboot_tx_write_str("OKAY"); }