pxe: detect image format before calling bootm/bootz

Trying bootm for zImage will print out several error message which
is not necessary for this case. So detect image format firstly, only
try bootm for legacy and FIT format image then try bootz for others.

This patch needs new function genimg_get_kernel_addr().

Signed-off-by: Bryan Wu <pengw@nvidia.com>

diff --git a/common/cmd_pxe.c b/common/cmd_pxe.c
index 28999f5734969dbbbecc6581bdca9ab56af5b108..c8163392326555ad96e5bcc9b3234e1a407cb82e 100644 (file)
--- a/common/cmd_pxe.c
+++ b/common/cmd_pxe.c
@@ -1,5 +1,6 @@
 /*
  * Copyright 2010-2011 Calxeda, Inc.
+ * Copyright (c) 2014, NVIDIA CORPORATION.  All rights reserved.
  *
  * SPDX-License-Identifier:    GPL-2.0+
  */
@@ -609,6 +610,8 @@ static int label_boot(cmd_tbl_t *cmdtp, struct pxe_label *label)
        char *bootargs;
        int bootm_argc = 3;
        int len = 0;
+       ulong kernel_addr;
+       void *buf;
 
        label_print(label);
 
@@ -771,11 +774,15 @@ static int label_boot(cmd_tbl_t *cmdtp, struct pxe_label *label)
        if (bootm_argv[3])
                bootm_argc = 4;
 
-       do_bootm(cmdtp, 0, bootm_argc, bootm_argv);
-
+       kernel_addr = genimg_get_kernel_addr(bootm_argv[1]);
+       buf = map_sysmem(kernel_addr, 0);
+       /* Try bootm for legacy and FIT format image */
+       if (genimg_get_format(buf) != IMAGE_FORMAT_INVALID)
+               do_bootm(cmdtp, 0, bootm_argc, bootm_argv);
 #ifdef CONFIG_CMD_BOOTZ
-       /* Try booting a zImage if do_bootm returns */
-       do_bootz(cmdtp, 0, bootm_argc, bootm_argv);
+       /* Try booting a zImage */
+       else
+               do_bootz(cmdtp, 0, bootm_argc, bootm_argv);
 #endif
        return 1;
 }