fastboot: Implement flashing session counter

[u-boot] / drivers / usb / gadget / f_fastboot.c

diff --git a/drivers/usb/gadget/f_fastboot.c b/drivers/usb/gadget/f_fastboot.c
index 05fb77302b3e10b04aa06082747f32d44708369f..a70463db33987a47e3a0398139dec60cefa0c40a 100644 (file)
--- a/drivers/usb/gadget/f_fastboot.c
+++ b/drivers/usb/gadget/f_fastboot.c
@@ -51,6 +51,7 @@ static inline struct f_fastboot *func_to_fastboot(struct usb_function *f)
 }
 
 static struct f_fastboot *fastboot_func;
+static unsigned int fastboot_flash_session_id;
 static unsigned int download_size;
 static unsigned int download_bytes;
 static bool is_high_speed;
@@ -393,6 +394,15 @@ static void cb_getvar(struct usb_ep *ep, struct usb_request *req)
 
                sprintf(str_num, "0x%08x", CONFIG_FASTBOOT_BUF_SIZE);
                strncat(response, str_num, chars_left);
+
+               /*
+                * This also indicates the start of a new flashing
+                * "session", in which we could have 1-N buffers to
+                * write to a partition.
+                *
+                * Reset our session counter.
+                */
+               fastboot_flash_session_id = 0;
        } else if (!strcmp_l1("serialno", cmd)) {
                s = getenv("serial#");
                if (s)
@@ -555,9 +565,11 @@ static void cb_flash(struct usb_ep *ep, struct usb_request *req)
 
        strcpy(response, "FAILno flash device defined");
 #ifdef CONFIG_FASTBOOT_FLASH_MMC_DEV
-       fb_mmc_flash_write(cmd, (void *)CONFIG_FASTBOOT_BUF_ADDR,
+       fb_mmc_flash_write(cmd, fastboot_flash_session_id,
+                          (void *)CONFIG_FASTBOOT_BUF_ADDR,
                           download_bytes, response);
 #endif
+       fastboot_flash_session_id++;
        fastboot_tx_write_str(response);
 }
 #endif