cdba-server: Implement fastboot continue

Add cdba-server side support for "fastboot continue" which allows
fastboot to continue its default boot process.

I find it useful to setup my boards with an additional SD card which I
frequently use the default image on eMMC to chroot to and populate
modules, rebooting into fastboot and subsequently booting via fastboot
a rootfs on the SD card.

Signed-off-by: Bryan O'Donoghue <[email protected]>

Author: 0xB0D

cdba-server.c

@@ -145,6 +145,12 @@ static void msg_fastboot_download(const void *data, size_t len)
 	}
 }
 
+static void msg_fastboot_continue(void)
+{
+	device_fastboot_continue(selected_device);
+	cdba_send(MSG_FASTBOOT_CONTINUE);
+}
+
 void cdba_send_buf(int type, size_t len, const void *buf)
 {
 	struct msg msg = {
@@ -228,6 +234,9 @@ static int handle_stdin(int fd, void *buf)
 		case MSG_BOARD_INFO:
 			device_info(username, msg->data, msg->len);
 			break;
+		case MSG_FASTBOOT_CONTINUE:
+			msg_fastboot_continue();
+			break;
 		default:
 			fprintf(stderr, "unk %d len %d\n", msg->type, msg->len);
 			exit(1);

cdba.h

@@ -30,6 +30,7 @@ enum {
 	MSG_SEND_BREAK,
 	MSG_LIST_DEVICES,
 	MSG_BOARD_INFO,
+	MSG_FASTBOOT_CONTINUE,
 };
 
 #endif

device.c

@@ -303,6 +303,11 @@ void device_fastboot_boot(struct device *device)
 	fastboot_boot(device->fastboot);
 }
 
+void device_fastboot_continue(struct device *device)
+{
+	fastboot_continue(device->fastboot);
+}
+
 void device_fastboot_flash_reboot(struct device *device)
 {
 	fastboot_flash(device->fastboot, "boot");

device.h

@@ -88,6 +88,7 @@ void device_fastboot_flash_reboot(struct device *device);
 void device_send_break(struct device *device);
 void device_list_devices(const char *username);
 void device_info(const char *username, const void *data, size_t dlen);
+void device_fastboot_continue(struct device *device);
 
 enum {
 	DEVICE_KEY_FASTBOOT,

fastboot.c

@@ -490,3 +490,17 @@ int fastboot_reboot(struct fastboot *fb)
 
 	return 0;
 }
+
+int fastboot_continue(struct fastboot *fb)
+{
+	char buf[80];
+	int n;
+
+	fastboot_write(fb, "continue", 8);
+
+	n = fastboot_read(fb, buf, sizeof(buf));
+	if (n >= 0)
+		fprintf(stderr, "%s\n", buf);
+
+	return 0;
+}

fastboot.h

@@ -17,5 +17,6 @@ int fastboot_erase(struct fastboot *fb, const char *partition);
 int fastboot_set_active(struct fastboot *fb, const char *active);
 int fastboot_flash(struct fastboot *fb, const char *partition);
 int fastboot_reboot(struct fastboot *fb);
+int fastboot_continue(struct fastboot *fb);
 
 #endif