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fastboot: add support for reboot-bootloader command

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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>
Tested-by: Steve Rae <srae@broadcom.com>
[Test HW: bcm28155_ap board]
This commit is contained in:
Alexey Firago 2015-02-25 17:10:47 +03:00 committed by Lukasz Majewski
parent 8a41802f21
commit e2ec3e4612
1 changed files with 13 additions and 0 deletions
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13
drivers/usb/gadget/f_fastboot.c
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@ -123,6 +123,7 @@ 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)
{
@ -326,8 +327,20 @@ 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");
}