cbfs: Add cbfs_boot_load_file()

Generalize cbfs_boot_load_struct() by passing in CBFS type

Change-Id: I6e5f845cb4ce5b00f01a39619919f85e39028f19
Signed-off-by: T Michael Turney <mturney@codeaurora.org>
Reviewed-on: https://review.coreboot.org/25648
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>

src/include/cbfs.h

@@ -37,11 +37,12 @@ void *cbfs_boot_map_with_leak(const char *name, uint32_t type, size_t *size);
 /* Locate file in a specific region of fmap. Return 0 on success. < 0 on error*/
 int cbfs_locate_file_in_region(struct cbfsf *fh, const char *region_name,
 		const char *name, uint32_t *type);
-/* Load a struct file from CBFS into a buffer. Returns amount of loaded
- * bytes on success or 0 on error. File will get decompressed as necessary.
- * Same decompression requirements as cbfs_load_and_decompress(). */
-size_t cbfs_boot_load_struct(const char *name, void *buf, size_t buf_size);
-
+/* Load an arbitrary type file from CBFS into a buffer. Returns amount of
+ * loaded bytes on success or 0 on error. File will get decompressed as
+ * necessary.  Same decompression requirements as
+ * cbfs_load_and_decompress(). */
+size_t cbfs_boot_load_file(const char *name, void *buf, size_t buf_size,
+	uint32_t type);
 /* Load |in_size| bytes from |rdev| at |offset| to the |buffer_size| bytes
  * large |buffer|, decompressing it according to |compression| in the process.
  * Returns the decompressed file size, or 0 on error.

src/lib/cbfs.c

@@ -182,12 +182,12 @@ void *cbfs_boot_load_stage_by_name(const char *name)
 	return prog_entry(&stage);
 }
 
-size_t cbfs_boot_load_struct(const char *name, void *buf, size_t buf_size)
+size_t cbfs_boot_load_file(const char *name, void *buf, size_t buf_size,
+			   uint32_t type)
 {
 	struct cbfsf fh;
 	uint32_t compression_algo;
 	size_t decompressed_size;
-	uint32_t type = CBFS_TYPE_STRUCT;
 
 	if (cbfs_boot_locate(&fh, name, &type) < 0)
 		return 0;

src/mainboard/google/gru/sdram_configs.c

@@ -67,8 +67,8 @@ const struct rk3399_sdram_params *get_sdram_config()
 	if (ramcode >= ARRAY_SIZE(sdram_configs) ||
 	    !snprintf(config_file, sizeof(config_file), "%s-%d",
 	    sdram_configs[ramcode], get_sdram_target_mhz()) ||
-	    (cbfs_boot_load_struct(config_file, &params,
-				   sizeof(params)) != sizeof(params)))
+	    (cbfs_boot_load_file(config_file, &params, sizeof(params),
+				 CBFS_TYPE_STRUCT) != sizeof(params)))
 		die("Cannot load SDRAM parameter file!");
 
 	return &params;