fdt: Pass the device tree to fdtdec_prepare_fdt()

This function uses gd->fdt_blob a lot and cannot be used to check any
other device tree. Use a parameter instead.

Signed-off-by: Simon Glass <sjg@chromium.org>

diff --git a/lib/fdtdec.c b/lib/fdtdec.c
index 891b274..03c9cea 100644 (file)
--- a/lib/fdtdec.c
+++ b/lib/fdtdec.c
@@ -590,23 +590,23 @@ int fdtdec_get_chosen_node(const void *blob, const char *name)
 /**
  * fdtdec_prepare_fdt() - Check we have a valid fdt available to control U-Boot
  *
+ * @blob: Blob to check
+ *
  * If not, a message is printed to the console if the console is ready.
  *
  * Return: 0 if all ok, -ENOENT if not
  */
-static int fdtdec_prepare_fdt(void)
+static int fdtdec_prepare_fdt(const void *blob)
 {
-       if (!gd->fdt_blob || ((uintptr_t)gd->fdt_blob & 3) ||
-           fdt_check_header(gd->fdt_blob)) {
+       if (!blob || ((uintptr_t)blob & 3) || fdt_check_header(blob)) {
                if (spl_phase() <= PHASE_SPL) {
                        puts("Missing DTB\n");
                } else {
                        printf("No valid device tree binary found at %p\n",
-                              gd->fdt_blob);
-                       if (_DEBUG && gd->fdt_blob) {
-                               printf("fdt_blob=%p\n", gd->fdt_blob);
-                       print_buffer((ulong)gd->fdt_blob, gd->fdt_blob, 4,
-                                    32, 0);
+                              blob);
+                       if (_DEBUG && blob) {
+                               printf("fdt_blob=%p\n", blob);
+                               print_buffer((ulong)blob, blob, 4, 32, 0);
                        }
                }
                return -ENOENT;
@@ -623,7 +623,7 @@ int fdtdec_check_fdt(void)
         * FDT (prior to console ready) will need to make their own
         * arrangements and do their own checks.
         */
-       assert(!fdtdec_prepare_fdt());
+       assert(!fdtdec_prepare_fdt(gd->fdt_blob));
        return 0;
 }
 
@@ -1668,7 +1668,7 @@ int fdtdec_setup(void)
        if (CONFIG_IS_ENABLED(MULTI_DTB_FIT))
                setup_multi_dtb_fit();
 
-       ret = fdtdec_prepare_fdt();
+       ret = fdtdec_prepare_fdt(gd->fdt_blob);
        if (!ret)
                ret = fdtdec_board_setup(gd->fdt_blob);
        oftree_reset();
@@ -1700,7 +1700,7 @@ int fdtdec_resetup(int *rescan)
 
                *rescan = 1;
                gd->fdt_blob = fdt_blob;
-               return fdtdec_prepare_fdt();
+               return fdtdec_prepare_fdt(fdt_blob);
        }
 
        /*