add boot_get_loadables() to load listed images

Added a trimmed down instance of boot_get_<thing>() to satisfy the
minimum requierments of the added feature.  The function follows the
normal patterns set by other boot_get<thing>'s, which should make it a
bit easier to combine them all together into one boot_get_image()
function in a later refactor.

Documentation for the new function can be found in source:
  include/image.h

Signed-off-by: Karl Apsite <Karl.Apsite@dornerworks.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

3 files changed, 102 insertions, 1 deletions

diff --git a/common/bootm.c b/common/bootm.c
index 6842029..07ae0f5 100644
--- a/common/bootm.c
+++ b/common/bootm.c
@@ -240,6 +240,23 @@ static int bootm_find_fdt(int flag, int argc, char * const argv[])
 }
 #endif
 
+#if defined(CONFIG_FIT)
+static int bootm_find_loadables(int flag, int argc, char * const argv[])
+{
+	int ret;
+
+	/* find all of the loadables */
+	ret = boot_get_loadable(argc, argv, &images, IH_ARCH_DEFAULT,
+			       NULL, NULL);
+	if (ret) {
+		printf("Loadable(s) is corrupt or invalid\n");
+		return 1;
+	}
+
+	return 0;
+}
+#endif
+
 int bootm_find_ramdisk_fdt(int flag, int argc, char * const argv[])
 {
 	if (bootm_find_ramdisk(flag, argc, argv))
@@ -250,6 +267,11 @@ int bootm_find_ramdisk_fdt(int flag, int argc, char * const argv[])
 		return 1;
 #endif
 
+#if defined(CONFIG_FIT)
+	if (bootm_find_loadables(flag, argc, argv))
+		return 1;
+#endif
+
 	return 0;
 }
 
diff --git a/common/image-fit.c b/common/image-fit.c
index fc9ea1f..4bd8fea 100644
--- a/common/image-fit.c
+++ b/common/image-fit.c
@@ -1544,6 +1544,8 @@ static const char *fit_get_image_type_property(int type)
 		return FIT_RAMDISK_PROP;
 	case IH_TYPE_X86_SETUP:
 		return FIT_SETUP_PROP;
+	case IH_TYPE_LOADABLE:
+		return FIT_LOADABLE_PROP;
 	}
 
 	return "unknown";
@@ -1661,7 +1663,13 @@ int fit_image_load(bootm_headers_t *images, ulong addr,
 	os_ok = image_type == IH_TYPE_FLATDT ||
 		fit_image_check_os(fit, noffset, IH_OS_LINUX) ||
 		fit_image_check_os(fit, noffset, IH_OS_OPENRTOS);
-	if (!type_ok || !os_ok) {
+
+	/*
+	 * If either of the checks fail, we should report an error, but
+	 * if the image type is coming from the "loadables" field, we
+	 * don't care what it is
+	 */
+	if ((!type_ok || !os_ok) && image_type != IH_TYPE_LOADABLE) {
 		fit_image_get_os(fit, noffset, &os);
 		printf("No %s %s %s Image\n",
 		       genimg_get_os_name(os),
diff --git a/common/image.c b/common/image.c
index fdec496..0f5274f 100644
--- a/common/image.c
+++ b/common/image.c
@@ -1165,6 +1165,77 @@ int boot_get_setup(bootm_headers_t *images, uint8_t arch,
 #endif
 }
 
+#if defined(CONFIG_FIT)
+int boot_get_loadable(int argc, char * const argv[], bootm_headers_t *images,
+		uint8_t arch, const ulong *ld_start, ulong * const ld_len)
+{
+	/*
+	 * These variables are used to hold the current image location
+	 * in system memory.
+	 */
+	ulong tmp_img_addr;
+	/*
+	 * These two variables are requirements for fit_image_load, but
+	 * their values are not used
+	 */
+	ulong img_data, img_len;
+	void *buf;
+	int loadables_index;
+	int conf_noffset;
+	int fit_img_result;
+	char *uname;
+
+	/* Check to see if the images struct has a FIT configuration */
+	if (!genimg_has_config(images)) {
+		debug("## FIT configuration was not specified\n");
+		return 0;
+	}
+
+	/*
+	 * Obtain the os FIT header from the images struct
+	 * copy from dataflash if needed
+	 */
+	tmp_img_addr = map_to_sysmem(images->fit_hdr_os);
+	tmp_img_addr = genimg_get_image(tmp_img_addr);
+	buf = map_sysmem(tmp_img_addr, 0);
+	/*
+	 * Check image type. For FIT images get FIT node
+	 * and attempt to locate a generic binary.
+	 */
+	switch (genimg_get_format(buf)) {
+	case IMAGE_FORMAT_FIT:
+		conf_noffset = fit_conf_get_node(buf, images->fit_uname_cfg);
+
+		for (loadables_index = 0;
+		     !fdt_get_string_index(buf, conf_noffset,
+				FIT_LOADABLE_PROP,
+				loadables_index,
+				(const char **)&uname) > 0;
+		     loadables_index++)
+		{
+			fit_img_result = fit_image_load(images,
+				tmp_img_addr,
+				(const char **)&uname,
+				&(images->fit_uname_cfg), arch,
+				IH_TYPE_LOADABLE,
+				BOOTSTAGE_ID_FIT_LOADABLE_START,
+				FIT_LOAD_OPTIONAL_NON_ZERO,
+				&img_data, &img_len);
+			if (fit_img_result < 0) {
+				/* Something went wrong! */
+				return fit_img_result;
+			}
+		}
+		break;
+	default:
+		printf("The given image format is not supported (corrupt?)\n");
+		return 1;
+	}
+
+	return 0;
+}
+#endif
+
 #ifdef CONFIG_SYS_BOOT_GET_CMDLINE
 /**
  * boot_get_cmdline - allocate and initialize kernel cmdline