[PATCH] rockchip: rk3399-rock-pi-4: Fix Synchronous Abort

[Jonas Karlman]

After the commit 788cf33315c7 ("efi: add a helper to generate dynamic
UUIDs") update_info.num_images must match number of valid update images.

On Rock Pi 4 following Synchronous Abort can be observed due to fw_name
being NULL:

  Scanning global bootmeth 'efi_mgr':
  "Synchronous Abort" handler, esr 0x96000010, far 0x0
  elr: 0000000000200e28 lr : 000000000028adb8 (reloc)
  elr: 00000000f3efbe28 lr : 00000000f3f85db8
  x0 : 0000000000000000 x1 : ffffffffffffffff
  x2 : 0000000000000000 x3 : 000000000000000e
  x4 : 0000000000000000 x5 : 00000000f1ef0d78
  x6 : 00000000f3fb3b90 x7 : 0000000000000044
  x8 : 0000000000000010 x9 : 0000000000000031
  x10: 00000000f0ea3fff x11: 00000000f1f29e00
  x12: 0000000000000002 x13: fffffffffffff000
  x14: 00000000f1f29e00 x15: 0000000000000018
  x16: 00000000f3f44f7c x17: 0000000000000000
  x18: 00000000f1ef2de0 x19: 00000000f0ea3040
  x20: 00000000f3ff53d8 x21: 00000000f3fd0498
  x22: 0000000000000000 x23: 00000000f1edb960
  x24: 00000000f1edb95f x25: 00000000f1edb990
  x26: 00000000f1edb964 x27: 00000000f1edb998
  x28: 00000000f1edc1ec x29: 00000000f1edb820

  Code: aa0003e2 d2800000 eb01001f 54000060 (78607843)
  Resetting CPU ...

  resetting ...

Fix this by setting update_info.num_images to 0 when no valid update
images is added to update_info.

Signed-off-by: Jonas Karlman <jonas at kwiboo.se>
---
 board/radxa/rockpi4-rk3399/rockpi4-rk3399.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/board/radxa/rockpi4-rk3399/rockpi4-rk3399.c b/board/radxa/rockpi4-rk3399/rockpi4-rk3399.c
index fd827467b30a..856b434df36d 100644
--- a/board/radxa/rockpi4-rk3399/rockpi4-rk3399.c
+++ b/board/radxa/rockpi4-rk3399/rockpi4-rk3399.c
@@ -52,6 +52,8 @@ void rockchip_capsule_update_board_setup(void)
 
 		fw_images[0].fw_name = u"ROCKPI4C-IDBLOADER";
 		fw_images[1].fw_name = u"ROCKPI4C-UBOOT";
+	} else {
+		update_info.num_images = 0;
 	}
 }
 #endif /* CONFIG_EFI_HAVE_CAPSULE_SUPPORT && CONFIG_EFI_PARTITION */
-- 
2.47.0