[PATCH 3/8] spl: fit: Pass FIT context via a structure pointer

Alexandru Gagniuc mr.nuke.me at gmail.com
Wed Dec 16 01:09:39 CET 2020


Several loose arguments describe the FIT image. They are thus related,
and it makes sense to pass them together, in a structure. Examples
include the FIT blob pointer, offset to FDT nodes, and the offset to
external data.

Use a spl_fit_info structure to group these parameters.

Signed-off-by: Alexandru Gagniuc <mr.nuke.me at gmail.com>
---
 common/spl/spl_fit.c | 101 ++++++++++++++++++-------------------------
 1 file changed, 43 insertions(+), 58 deletions(-)

diff --git a/common/spl/spl_fit.c b/common/spl/spl_fit.c
index a6f85b6f9d..e6b27f61af 100644
--- a/common/spl/spl_fit.c
+++ b/common/spl/spl_fit.c
@@ -76,7 +76,7 @@ static int find_node_from_desc(const void *fit, int node, const char *str)
  *
  * Return:	0 on success, or a negative error number
  */
-static int spl_fit_get_image_name(const void *fit, int images,
+static int spl_fit_get_image_name(const struct spl_fit_info *ctx,
 				  const char *type, int index,
 				  const char **outname)
 {
@@ -87,21 +87,21 @@ static int spl_fit_get_image_name(const void *fit, int images,
 	int len, i;
 	bool found = true;
 
-	conf_node = fit_find_config_node(fit);
+	conf_node = fit_find_config_node(ctx->fit);
 	if (conf_node < 0) {
 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
 		printf("No matching DT out of these options:\n");
-		for (node = fdt_first_subnode(fit, conf_node);
+		for (node = fdt_first_subnode(ctx->fit, conf_node);
 		     node >= 0;
-		     node = fdt_next_subnode(fit, node)) {
-			name = fdt_getprop(fit, node, "description", &len);
+		     node = fdt_next_subnode(ctx->fit, node)) {
+			name = fdt_getprop(ctx->fit, node, "description", &len);
 			printf("   %s\n", name);
 		}
 #endif
 		return conf_node;
 	}
 
-	name = fdt_getprop(fit, conf_node, type, &len);
+	name = fdt_getprop(ctx->fit, conf_node, type, &len);
 	if (!name) {
 		debug("cannot find property '%s': %d\n", type, len);
 		return -EINVAL;
@@ -135,11 +135,11 @@ static int spl_fit_get_image_name(const void *fit, int images,
 			 * node name.
 			 */
 			int node;
-			int images = fdt_path_offset(fit, FIT_IMAGES_PATH);
+			int images = fdt_path_offset(ctx->fit, FIT_IMAGES_PATH);
 
-			node = find_node_from_desc(fit, images, str);
+			node = find_node_from_desc(ctx->fit, images, str);
 			if (node > 0)
-				str = fdt_get_name(fit, node, NULL);
+				str = fdt_get_name(ctx->fit, node, NULL);
 
 			found = true;
 		}
@@ -166,20 +166,20 @@ static int spl_fit_get_image_name(const void *fit, int images,
  * Return:	the node offset of the respective image node or a negative
  *		error number.
  */
-static int spl_fit_get_image_node(const void *fit, int images,
+static int spl_fit_get_image_node(const struct spl_fit_info *ctx,
 				  const char *type, int index)
 {
 	const char *str;
 	int err;
 	int node;
 
-	err = spl_fit_get_image_name(fit, images, type, index, &str);
+	err = spl_fit_get_image_name(ctx, type, index, &str);
 	if (err)
 		return err;
 
 	debug("%s: '%s'\n", type, str);
 
-	node = fdt_subnode_offset(fit, images, str);
+	node = fdt_subnode_offset(ctx->fit, ctx->images_node, str);
 	if (node < 0) {
 		pr_err("cannot find image node '%s': %d\n", str, node);
 		return -EINVAL;
@@ -230,10 +230,7 @@ static int get_aligned_image_size(struct spl_load_info *info, int data_size,
  * spl_load_fit_image(): load the image described in a certain FIT node
  * @info:	points to information about the device to load data from
  * @sector:	the start sector of the FIT image on the device
- * @fit:	points to the flattened device tree blob describing the FIT
- *		image
- * @base_offset: the beginning of the data area containing the actual
- *		image data, relative to the beginning of the FIT
+ * @ctx:	points to the FIT context structure
  * @node:	offset of the DT node describing the image to load (relative
  *		to @fit)
  * @image_info:	will be filled with information about the loaded image
@@ -244,7 +241,7 @@ static int get_aligned_image_size(struct spl_load_info *info, int data_size,
  * Return:	0 on success or a negative error number.
  */
 static int spl_load_fit_image(struct spl_load_info *info, ulong sector,
-			      void *fit, ulong base_offset, int node,
+			      const struct spl_fit_info *ctx, int node,
 			      struct spl_image_info *image_info)
 {
 	int offset;
@@ -258,6 +255,7 @@ static int spl_load_fit_image(struct spl_load_info *info, ulong sector,
 	int align_len = ARCH_DMA_MINALIGN - 1;
 	uint8_t image_comp = -1, type = -1;
 	const void *data;
+	const void *fit = ctx->fit;
 	bool external_data = false;
 
 	if (IS_ENABLED(CONFIG_SPL_FPGA) ||
@@ -279,7 +277,7 @@ static int spl_load_fit_image(struct spl_load_info *info, ulong sector,
 	if (!fit_image_get_data_position(fit, node, &offset)) {
 		external_data = true;
 	} else if (!fit_image_get_data_offset(fit, node, &offset)) {
-		offset += base_offset;
+		offset += ctx->ext_data_offset;
 		external_data = true;
 	}
 
@@ -355,7 +353,7 @@ static int spl_load_fit_image(struct spl_load_info *info, ulong sector,
 
 static int spl_fit_append_fdt(struct spl_image_info *spl_image,
 			      struct spl_load_info *info, ulong sector,
-			      void *fit, int images, ulong base_offset)
+			      const struct spl_fit_info *ctx)
 {
 	struct spl_image_info image_info;
 	int node, ret = 0, index = 0;
@@ -367,7 +365,7 @@ static int spl_fit_append_fdt(struct spl_image_info *spl_image,
 	image_info.load_addr = spl_image->load_addr + spl_image->size;
 
 	/* Figure out which device tree the board wants to use */
-	node = spl_fit_get_image_node(fit, images, FIT_FDT_PROP, index++);
+	node = spl_fit_get_image_node(ctx, FIT_FDT_PROP, index++);
 	if (node < 0) {
 		debug("%s: cannot find FDT node\n", __func__);
 
@@ -381,7 +379,7 @@ static int spl_fit_append_fdt(struct spl_image_info *spl_image,
 		else
 			return node;
 	} else {
-		ret = spl_load_fit_image(info, sector, fit, base_offset, node,
+		ret = spl_load_fit_image(info, sector, ctx, node,
 					 &image_info);
 		if (ret < 0)
 			return ret;
@@ -394,8 +392,7 @@ static int spl_fit_append_fdt(struct spl_image_info *spl_image,
 		void *tmpbuffer = NULL;
 
 		for (; ; index++) {
-			node = spl_fit_get_image_node(fit, images, FIT_FDT_PROP,
-						      index);
+			node = spl_fit_get_image_node(ctx, FIT_FDT_PROP, index);
 			if (node == -E2BIG) {
 				debug("%s: No additional FDT node\n", __func__);
 				break;
@@ -418,7 +415,7 @@ static int spl_fit_append_fdt(struct spl_image_info *spl_image,
 					      __func__);
 			}
 			image_info.load_addr = (ulong)tmpbuffer;
-			ret = spl_load_fit_image(info, sector, fit, base_offset,
+			ret = spl_load_fit_image(info, sector, ctx,
 						 node, &image_info);
 			if (ret < 0)
 				break;
@@ -433,12 +430,12 @@ static int spl_fit_append_fdt(struct spl_image_info *spl_image,
 							(void *)image_info.load_addr);
 			if (ret) {
 				pr_err("failed to apply DT overlay %s\n",
-				       fit_get_name(fit, node, NULL));
+				       fit_get_name(ctx->fit, node, NULL));
 				break;
 			}
 
 			debug("%s: DT overlay %s applied\n", __func__,
-			      fit_get_name(fit, node, NULL));
+			      fit_get_name(ctx->fit, node, NULL));
 		}
 		free(tmpbuffer);
 		if (ret)
@@ -453,7 +450,7 @@ static int spl_fit_append_fdt(struct spl_image_info *spl_image,
 	return ret;
 }
 
-static int spl_fit_record_loadable(const void *fit, int images, int index,
+static int spl_fit_record_loadable(const struct spl_fit_info *ctx, int index,
 				   void *blob, struct spl_image_info *image)
 {
 	int ret = 0;
@@ -461,17 +458,16 @@ static int spl_fit_record_loadable(const void *fit, int images, int index,
 	const char *name;
 	int node;
 
-	ret = spl_fit_get_image_name(fit, images, "loadables",
-				     index, &name);
+	ret = spl_fit_get_image_name(ctx, "loadables", index, &name);
 	if (ret < 0)
 		return ret;
 
-	node = spl_fit_get_image_node(fit, images, "loadables", index);
+	node = spl_fit_get_image_node(ctx, "loadables", index);
 
 	ret = fdt_record_loadable(blob, index, name, image->load_addr,
 				  image->size, image->entry_point,
-				  fdt_getprop(fit, node, "type", NULL),
-				  fdt_getprop(fit, node, "os", NULL));
+				  fdt_getprop(ctx->fit, node, "type", NULL),
+				  fdt_getprop(ctx->fit, node, "os", NULL));
 #endif
 	return ret;
 }
@@ -594,8 +590,7 @@ int spl_load_simple_fit(struct spl_image_info *spl_image,
 	struct spl_image_info image_info;
 	struct spl_fit_info ctx;
 	int node = -1;
-	int images, ret;
-	int base_offset;
+	int ret;
 	int index = 0;
 	int firmware_node;
 
@@ -611,16 +606,11 @@ int spl_load_simple_fit(struct spl_image_info *spl_image,
 	if (ret < 0)
 		return ret;
 
-	images = ctx.images_node;
-	fit = (void *)ctx.fit;
-	base_offset = ctx.ext_data_offset;
-
 #ifdef CONFIG_SPL_FPGA
-	node = spl_fit_get_image_node(fit, images, "fpga", 0);
+	node = spl_fit_get_image_node(&ctx, "fpga", 0);
 	if (node >= 0) {
 		/* Load the image and set up the spl_image structure */
-		ret = spl_load_fit_image(info, sector, fit, base_offset, node,
-					 spl_image);
+		ret = spl_load_fit_image(info, sector, ctx, node, spl_image);
 		if (ret) {
 			printf("%s: Cannot load the FPGA: %i\n", __func__, ret);
 			return ret;
@@ -649,15 +639,14 @@ int spl_load_simple_fit(struct spl_image_info *spl_image,
 	 *   - fall back to using the first 'loadables' entry
 	 */
 	if (node < 0)
-		node = spl_fit_get_image_node(fit, images, FIT_FIRMWARE_PROP,
-					      0);
+		node = spl_fit_get_image_node(&ctx, FIT_FIRMWARE_PROP, 0);
 #ifdef CONFIG_SPL_OS_BOOT
 	if (node < 0)
-		node = spl_fit_get_image_node(fit, images, FIT_KERNEL_PROP, 0);
+		node = spl_fit_get_image_node(&ctx, FIT_KERNEL_PROP, 0);
 #endif
 	if (node < 0) {
 		debug("could not find firmware image, trying loadables...\n");
-		node = spl_fit_get_image_node(fit, images, "loadables", 0);
+		node = spl_fit_get_image_node(&ctx, "loadables", 0);
 		/*
 		 * If we pick the U-Boot image from "loadables", start at
 		 * the second image when later loading additional images.
@@ -671,8 +660,7 @@ int spl_load_simple_fit(struct spl_image_info *spl_image,
 	}
 
 	/* Load the image and set up the spl_image structure */
-	ret = spl_load_fit_image(info, sector, fit, base_offset, node,
-				 spl_image);
+	ret = spl_load_fit_image(info, sector, &ctx, node, spl_image);
 	if (ret)
 		return ret;
 
@@ -680,7 +668,7 @@ int spl_load_simple_fit(struct spl_image_info *spl_image,
 	 * For backward compatibility, we treat the first node that is
 	 * as a U-Boot image, if no OS-type has been declared.
 	 */
-	if (!spl_fit_image_get_os(fit, node, &spl_image->os))
+	if (!spl_fit_image_get_os(ctx.fit, node, &spl_image->os))
 		debug("Image OS is %s\n", genimg_get_os_name(spl_image->os));
 #if !defined(CONFIG_SPL_OS_BOOT)
 	else
@@ -692,8 +680,7 @@ int spl_load_simple_fit(struct spl_image_info *spl_image,
 	 * We allow this to fail, as the U-Boot image might embed its FDT.
 	 */
 	if (spl_image->os == IH_OS_U_BOOT) {
-		ret = spl_fit_append_fdt(spl_image, info, sector, fit,
-					 images, base_offset);
+		ret = spl_fit_append_fdt(spl_image, info, sector, &ctx);
 		if (!IS_ENABLED(CONFIG_OF_EMBED) && ret < 0)
 			return ret;
 	}
@@ -703,7 +690,7 @@ int spl_load_simple_fit(struct spl_image_info *spl_image,
 	for (; ; index++) {
 		uint8_t os_type = IH_OS_INVALID;
 
-		node = spl_fit_get_image_node(fit, images, "loadables", index);
+		node = spl_fit_get_image_node(&ctx, "loadables", index);
 		if (node < 0)
 			break;
 
@@ -715,17 +702,15 @@ int spl_load_simple_fit(struct spl_image_info *spl_image,
 		if (firmware_node == node)
 			continue;
 
-		ret = spl_load_fit_image(info, sector, fit, base_offset, node,
-					 &image_info);
+		ret = spl_load_fit_image(info, sector, &ctx, node, &image_info);
 		if (ret < 0)
 			continue;
 
-		if (!spl_fit_image_get_os(fit, node, &os_type))
+		if (!spl_fit_image_get_os(ctx.fit, node, &os_type))
 			debug("Loadable is %s\n", genimg_get_os_name(os_type));
 
 		if (os_type == IH_OS_U_BOOT) {
-			spl_fit_append_fdt(&image_info, info, sector,
-					   fit, images, base_offset);
+			spl_fit_append_fdt(&image_info, info, sector, &ctx);
 			spl_image->fdt_addr = image_info.fdt_addr;
 		}
 
@@ -739,7 +724,7 @@ int spl_load_simple_fit(struct spl_image_info *spl_image,
 
 		/* Record our loadables into the FDT */
 		if (spl_image->fdt_addr)
-			spl_fit_record_loadable(fit, images, index,
+			spl_fit_record_loadable(&ctx, index,
 						spl_image->fdt_addr,
 						&image_info);
 	}
@@ -755,7 +740,7 @@ int spl_load_simple_fit(struct spl_image_info *spl_image,
 	spl_image->flags |= SPL_FIT_FOUND;
 
 #ifdef CONFIG_IMX_HAB
-	board_spl_fit_post_load(fit);
+	board_spl_fit_post_load(ctx.fit);
 #endif
 
 	return 0;
-- 
2.26.2



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