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_fir...@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");
}
--
1.9.1
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