spl: Convert NVMe to spl_load

This converts the blk load method (used exclusively by NVMe) to use
spl_load. As a consequence, it also adds support for LOAD_FIT_FULL and
IMX images.

Signed-off-by: Sean Anderson <seanga2@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/common/spl/spl_blk_fs.c b/common/spl/spl_blk_fs.c
index 53b8e1b..ac267ab 100644
--- a/common/spl/spl_blk_fs.c
+++ b/common/spl/spl_blk_fs.c
@@ -7,6 +7,7 @@
 
 #include <common.h>
 #include <spl.h>
+#include <spl_load.h>
 #include <image.h>
 #include <fs.h>
 #include <asm/cache.h>
@@ -48,11 +49,11 @@
 		       enum uclass_id uclass_id, int devnum, int partnum)
 {
 	const char *filename = CONFIG_SPL_FS_LOAD_PAYLOAD_NAME;
-	struct legacy_img_hdr *header;
 	struct blk_desc *blk_desc;
-	loff_t actlen, filesize;
+	loff_t filesize;
 	struct blk_dev dev;
-	int ret = -ENODEV;
+	struct spl_load_info load;
+	int ret;
 
 	blk_desc = blk_get_devnum_by_uclass_id(uclass_id, devnum);
 	if (!blk_desc) {
@@ -61,8 +62,8 @@
 	}
 
 	blk_show_device(uclass_id, devnum);
-	header = spl_get_load_buffer(-sizeof(*header), sizeof(*header));
 
+	dev.filename = filename;
 	dev.ifname = blk_get_uclass_name(uclass_id);
 	snprintf(dev.dev_part_str, sizeof(dev.dev_part_str) - 1, "%x:%x",
 		 devnum, partnum);
@@ -70,63 +71,18 @@
 	if (ret) {
 		printf("spl: unable to set blk_dev %s %s. Err - %d\n",
 		       dev.ifname, dev.dev_part_str, ret);
-		goto out;
-	}
-
-	ret = fs_read(filename, virt_to_phys(header), 0,
-		      sizeof(struct legacy_img_hdr), &actlen);
-	if (ret) {
-		printf("spl: unable to read file %s. Err - %d\n", filename,
-		       ret);
-		goto out;
-	}
-
-	if (IS_ENABLED(CONFIG_SPL_LOAD_FIT) &&
-	    image_get_magic(header) == FDT_MAGIC) {
-		struct spl_load_info load;
-
-		debug("Found FIT\n");
-		load.read = spl_fit_read;
-		spl_set_bl_len(&load, ARCH_DMA_MINALIGN);
-		load.priv = &dev;
-		dev.filename = filename;
-
-		return spl_load_simple_fit(spl_image, &load, 0, header);
-	}
-
-	ret = spl_parse_image_header(spl_image, bootdev, header);
-	if (ret) {
-		printf("spl: unable to parse image header. Err - %d\n",
-		       ret);
-		goto out;
-	}
-
-	ret = fs_set_blk_dev(dev.ifname, dev.dev_part_str, FS_TYPE_ANY);
-	if (ret) {
-		printf("spl: unable to set blk_dev %s %s. Err - %d\n",
-		       dev.ifname, dev.dev_part_str, ret);
-		goto out;
+		return ret;
 	}
 
 	ret = fs_size(filename, &filesize);
 	if (ret) {
 		printf("spl: unable to get file size: %s. Err - %d\n",
 		       filename, ret);
-		goto out;
+		return ret;
 	}
 
-	ret = fs_set_blk_dev(dev.ifname, dev.dev_part_str, FS_TYPE_ANY);
-	if (ret) {
-		printf("spl: unable to set blk_dev %s %s. Err - %d\n",
-		       dev.ifname, dev.dev_part_str, ret);
-		goto out;
-	}
-
-	ret = fs_read(filename, (ulong)spl_image->load_addr, 0, filesize,
-		      &actlen);
-	if (ret)
-		printf("spl: unable to read file %s. Err - %d\n",
-		       filename, ret);
-out:
-	return ret;
+	load.read = spl_fit_read;
+	spl_set_bl_len(&load, ARCH_DMA_MINALIGN);
+	load.priv = &dev;
+	return spl_load(spl_image, bootdev, &load, filesize, 0);
 }