spl: fit: Break out some functions into a common file
Some of the functions within spl_fit will be used for non spl purposes.
Instead of duplicating functions simply break the functions to be reused
into its own file.
Signed-off-by: Franklin S Cooper Jr <fcooper@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
[trini: Only add the new define to image.h, otherwise we see breakage
due to massive include leakage into host tools in some cases]
Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/common/common_fit.c b/common/common_fit.c
new file mode 100644
index 0000000..5f5f3f9
--- /dev/null
+++ b/common/common_fit.c
@@ -0,0 +1,62 @@
+/*
+ * Copyright (C) 2016 Google, Inc
+ * Written by Simon Glass <sjg@chromium.org>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <errno.h>
+#include <image.h>
+#include <libfdt.h>
+#include <spl.h>
+
+ulong fdt_getprop_u32(const void *fdt, int node, const char *prop)
+{
+ const u32 *cell;
+ int len;
+
+ cell = fdt_getprop(fdt, node, prop, &len);
+ if (!cell || len != sizeof(*cell))
+ return FDT_ERROR;
+
+ return fdt32_to_cpu(*cell);
+}
+
+/*
+ * Iterate over all /configurations subnodes and call a platform specific
+ * function to find the matching configuration.
+ * Returns the node offset or a negative error number.
+ */
+int fit_find_config_node(const void *fdt)
+{
+ const char *name;
+ int conf, node, len;
+
+ conf = fdt_path_offset(fdt, FIT_CONFS_PATH);
+ if (conf < 0) {
+ debug("%s: Cannot find /configurations node: %d\n", __func__,
+ conf);
+ return -EINVAL;
+ }
+ for (node = fdt_first_subnode(fdt, conf);
+ node >= 0;
+ node = fdt_next_subnode(fdt, node)) {
+ name = fdt_getprop(fdt, node, "description", &len);
+ if (!name) {
+#ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
+ printf("%s: Missing FDT description in DTB\n",
+ __func__);
+#endif
+ return -EINVAL;
+ }
+ if (board_fit_config_name_match(name))
+ continue;
+
+ debug("Selecting config '%s'", name);
+
+ return node;
+ }
+
+ return -ENOENT;
+}