add FIT data-position & data-offset property support

Add FIT data-position & data-offset property support for bootm,
which were already supported in SPL.

Signed-off-by: Kelvin Cheung <keguang.zhang@gmail.com>

diff --git a/common/image-fit.c b/common/image-fit.c
index 8c15ed1..728187a 100644 (file)
--- a/common/image-fit.c
+++ b/common/image-fit.c
@@ -474,7 +474,7 @@ void fit_image_print(const void *fit, int image_noffset, const char *p)
        fit_image_get_comp(fit, image_noffset, &comp);
        printf("%s  Compression:  %s\n", p, genimg_get_comp_name(comp));
 
-       ret = fit_image_get_data(fit, image_noffset, &data, &size);
+       ret = fit_image_get_data_and_size(fit, image_noffset, &data, &size);
 
 #ifndef USE_HOSTCC
        printf("%s  Data Start:   ", p);
@@ -941,6 +941,54 @@ int fit_image_get_data_size(const void *fit, int noffset, int *data_size)
 }
 
 /**
+ * fit_image_get_data_and_size - get data and its size including
+ *                              both embedded and external data
+ * @fit: pointer to the FIT format image header
+ * @noffset: component image node offset
+ * @data: double pointer to void, will hold data property's data address
+ * @size: pointer to size_t, will hold data property's data size
+ *
+ * fit_image_get_data_and_size() finds data and its size including
+ * both embedded and external data. If the property is found
+ * its data start address and size are returned to the caller.
+ *
+ * returns:
+ *     0, on success
+ *     otherwise, on failure
+ */
+int fit_image_get_data_and_size(const void *fit, int noffset,
+                               const void **data, size_t *size)
+{
+       bool external_data = false;
+       int offset;
+       int len;
+       int ret;
+
+       if (!fit_image_get_data_position(fit, noffset, &offset)) {
+               external_data = true;
+       } else if (!fit_image_get_data_offset(fit, noffset, &offset)) {
+               external_data = true;
+               /*
+                * For FIT with external data, figure out where
+                * the external images start. This is the base
+                * for the data-offset properties in each image.
+                */
+               offset += ((fdt_totalsize(fit) + 3) & ~3);
+       }
+
+       if (external_data) {
+               debug("External Data\n");
+               ret = fit_image_get_data_size(fit, noffset, &len);
+               *data = fit + offset;
+               *size = len;
+       } else {
+               ret = fit_image_get_data(fit, noffset, data, size);
+       }
+
+       return ret;
+}
+
+/**
  * fit_image_hash_get_algo - get hash algorithm name
  * @fit: pointer to the FIT format image header
  * @noffset: hash node offset
@@ -1238,7 +1286,7 @@ int fit_image_verify(const void *fit, int image_noffset)
        char            *err_msg = "";
 
        /* Get image data and data length */
-       if (fit_image_get_data(fit, image_noffset, &data, &size)) {
+       if (fit_image_get_data_and_size(fit, image_noffset, &data, &size)) {
                err_msg = "Can't get image data/size";
                printf("error!\n%s for '%s' hash node in '%s' image node\n",
                       err_msg, fit_get_name(fit, noffset, NULL),
@@ -1876,7 +1924,7 @@ int fit_image_load(bootm_headers_t *images, ulong addr,
        bootstage_mark(bootstage_id + BOOTSTAGE_SUB_CHECK_ALL_OK);
 
        /* get image data address and length */
-       if (fit_image_get_data(fit, noffset, &buf, &size)) {
+       if (fit_image_get_data_and_size(fit, noffset, &buf, &size)) {
                printf("Could not find %s subimage data!\n", prop_name);
                bootstage_error(bootstage_id + BOOTSTAGE_SUB_GET_DATA);
                return -ENOENT;

diff --git a/include/image.h b/include/image.h
index 9522ee4..95d5934 100644 (file)
--- a/include/image.h
+++ b/include/image.h
@@ -988,6 +988,8 @@ int fit_image_get_data_offset(const void *fit, int noffset, int *data_offset);
 int fit_image_get_data_position(const void *fit, int noffset,
                                int *data_position);
 int fit_image_get_data_size(const void *fit, int noffset, int *data_size);
+int fit_image_get_data_and_size(const void *fit, int noffset,
+                               const void **data, size_t *size);
 
 int fit_image_hash_get_algo(const void *fit, int noffset, char **algo);
 int fit_image_hash_get_value(const void *fit, int noffset, uint8_t **value,