1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (C) 2016 Google, Inc
4 * Written by Simon Glass <sjg@chromium.org>
17 #include <asm/cache.h>
18 #include <asm/global_data.h>
19 #include <linux/libfdt.h>
21 DECLARE_GLOBAL_DATA_PTR;
24 const void *fit; /* Pointer to a valid FIT blob */
25 size_t ext_data_offset; /* Offset to FIT external data (end of FIT) */
26 int images_node; /* FDT offset to "/images" node */
27 int conf_node; /* FDT offset to selected configuration node */
30 __weak ulong board_spl_fit_size_align(ulong size)
35 static int find_node_from_desc(const void *fit, int node, const char *str)
42 /* iterate the FIT nodes and find a matching description */
43 for (child = fdt_first_subnode(fit, node); child >= 0;
44 child = fdt_next_subnode(fit, child)) {
46 const char *desc = fdt_getprop(fit, child, "description", &len);
51 if (!strcmp(desc, str))
59 * spl_fit_get_image_name(): By using the matching configuration subnode,
60 * retrieve the name of an image, specified by a property name and an index
62 * @fit: Pointer to the FDT blob.
63 * @images: Offset of the /images subnode.
64 * @type: Name of the property within the configuration subnode.
65 * @index: Index into the list of strings in this property.
66 * @outname: Name of the image
68 * Return: 0 on success, or a negative error number
70 static int spl_fit_get_image_name(const struct spl_fit_info *ctx,
71 const char *type, int index,
74 struct udevice *sysinfo;
75 const char *name, *str;
76 __maybe_unused int node;
80 name = fdt_getprop(ctx->fit, ctx->conf_node, type, &len);
82 debug("cannot find property '%s': %d\n", type, len);
87 for (i = 0; i < index; i++) {
88 str = strchr(str, '\0') + 1;
89 if (!str || (str - name >= len)) {
95 if (!found && CONFIG_IS_ENABLED(SYSINFO) && !sysinfo_get(&sysinfo)) {
98 * no string in the property for this index. Check if the
99 * sysinfo-level code can supply one.
101 rc = sysinfo_detect(sysinfo);
105 rc = sysinfo_get_fit_loadable(sysinfo, index - i - 1, type,
107 if (rc && rc != -ENOENT)
112 * The sysinfo provided a name for a loadable.
113 * Try to match it against the description properties
114 * first. If no matching node is found, use it as a
118 int images = fdt_path_offset(ctx->fit, FIT_IMAGES_PATH);
120 node = find_node_from_desc(ctx->fit, images, str);
122 str = fdt_get_name(ctx->fit, node, NULL);
129 debug("no string for index %d\n", index);
138 * spl_fit_get_image_node(): By using the matching configuration subnode,
139 * retrieve the name of an image, specified by a property name and an index
141 * @fit: Pointer to the FDT blob.
142 * @images: Offset of the /images subnode.
143 * @type: Name of the property within the configuration subnode.
144 * @index: Index into the list of strings in this property.
146 * Return: the node offset of the respective image node or a negative
149 static int spl_fit_get_image_node(const struct spl_fit_info *ctx,
150 const char *type, int index)
156 err = spl_fit_get_image_name(ctx, type, index, &str);
160 debug("%s: '%s'\n", type, str);
162 node = fdt_subnode_offset(ctx->fit, ctx->images_node, str);
164 pr_err("cannot find image node '%s': %d\n", str, node);
171 static int get_aligned_image_offset(struct spl_load_info *info, int offset)
174 * If it is a FS read, get the first address before offset which is
175 * aligned to ARCH_DMA_MINALIGN. If it is raw read return the
176 * block number to which offset belongs.
179 return offset & ~(ARCH_DMA_MINALIGN - 1);
181 return offset / info->bl_len;
184 static int get_aligned_image_overhead(struct spl_load_info *info, int offset)
187 * If it is a FS read, get the difference between the offset and
188 * the first address before offset which is aligned to
189 * ARCH_DMA_MINALIGN. If it is raw read return the offset within the
193 return offset & (ARCH_DMA_MINALIGN - 1);
195 return offset % info->bl_len;
198 static int get_aligned_image_size(struct spl_load_info *info, int data_size,
201 data_size = data_size + get_aligned_image_overhead(info, offset);
206 return (data_size + info->bl_len - 1) / info->bl_len;
210 * spl_load_fit_image(): load the image described in a certain FIT node
211 * @info: points to information about the device to load data from
212 * @sector: the start sector of the FIT image on the device
213 * @ctx: points to the FIT context structure
214 * @node: offset of the DT node describing the image to load (relative
216 * @image_info: will be filled with information about the loaded image
217 * If the FIT node does not contain a "load" (address) property,
218 * the image gets loaded to the address pointed to by the
219 * load_addr member in this struct, if load_addr is not 0
221 * Return: 0 on success or a negative error number.
223 static int spl_load_fit_image(struct spl_load_info *info, ulong sector,
224 const struct spl_fit_info *ctx, int node,
225 struct spl_image_info *image_info)
236 uint8_t image_comp = -1, type = -1;
238 const void *fit = ctx->fit;
239 bool external_data = false;
241 if (IS_ENABLED(CONFIG_SPL_FPGA) ||
242 (IS_ENABLED(CONFIG_SPL_OS_BOOT) && IS_ENABLED(CONFIG_SPL_GZIP))) {
243 if (fit_image_get_type(fit, node, &type))
244 puts("Cannot get image type.\n");
246 debug("%s ", genimg_get_type_name(type));
249 if (IS_ENABLED(CONFIG_SPL_GZIP)) {
250 fit_image_get_comp(fit, node, &image_comp);
251 debug("%s ", genimg_get_comp_name(image_comp));
254 if (fit_image_get_load(fit, node, &load_addr)) {
255 if (!image_info->load_addr) {
256 printf("Can't load %s: No load address and no buffer\n",
257 fit_get_name(fit, node, NULL));
260 load_addr = image_info->load_addr;
263 if (!fit_image_get_data_position(fit, node, &offset)) {
264 external_data = true;
265 } else if (!fit_image_get_data_offset(fit, node, &offset)) {
266 offset += ctx->ext_data_offset;
267 external_data = true;
274 if (fit_image_get_data_size(fit, node, &len))
277 /* Dont bother to copy 0 byte data, but warn, though */
279 log_warning("%s: Skip load '%s': image size is 0!\n",
280 __func__, fit_get_name(fit, node, NULL));
284 src_ptr = map_sysmem(ALIGN(load_addr, ARCH_DMA_MINALIGN), len);
287 overhead = get_aligned_image_overhead(info, offset);
288 nr_sectors = get_aligned_image_size(info, length, offset);
291 sector + get_aligned_image_offset(info, offset),
292 nr_sectors, src_ptr) != nr_sectors)
295 debug("External data: dst=%p, offset=%x, size=%lx\n",
296 src_ptr, offset, (unsigned long)length);
297 src = src_ptr + overhead;
300 if (fit_image_get_data(fit, node, &data, &length)) {
301 puts("Cannot get image data/size\n");
304 debug("Embedded data: dst=%lx, size=%lx\n", load_addr,
305 (unsigned long)length);
306 src = (void *)data; /* cast away const */
309 if (CONFIG_IS_ENABLED(FIT_SIGNATURE)) {
310 printf("## Checking hash(es) for Image %s ... ",
311 fit_get_name(fit, node, NULL));
312 if (!fit_image_verify_with_data(fit, node, gd_fdt_blob(), src,
318 if (CONFIG_IS_ENABLED(FIT_IMAGE_POST_PROCESS))
319 board_fit_image_post_process(fit, node, &src, &length);
321 load_ptr = map_sysmem(load_addr, length);
322 if (IS_ENABLED(CONFIG_SPL_GZIP) && image_comp == IH_COMP_GZIP) {
324 if (gunzip(load_ptr, CONFIG_SYS_BOOTM_LEN, src, &size)) {
325 puts("Uncompressing error\n");
330 memcpy(load_ptr, src, length);
336 image_info->load_addr = load_addr;
337 image_info->size = length;
339 if (!fit_image_get_entry(fit, node, &entry_point))
340 image_info->entry_point = entry_point;
342 image_info->entry_point = FDT_ERROR;
348 static bool os_takes_devicetree(uint8_t os)
354 return IS_ENABLED(CONFIG_SPL_OS_BOOT);
360 static int spl_fit_append_fdt(struct spl_image_info *spl_image,
361 struct spl_load_info *info, ulong sector,
362 const struct spl_fit_info *ctx)
364 struct spl_image_info image_info;
365 int node, ret = 0, index = 0;
368 * Use the address following the image as target address for the
371 image_info.load_addr = spl_image->load_addr + spl_image->size;
373 /* Figure out which device tree the board wants to use */
374 node = spl_fit_get_image_node(ctx, FIT_FDT_PROP, index++);
376 debug("%s: cannot find FDT node\n", __func__);
379 * U-Boot did not find a device tree inside the FIT image. Use
380 * the U-Boot device tree instead.
383 memcpy((void *)image_info.load_addr, gd->fdt_blob,
384 fdt_totalsize(gd->fdt_blob));
388 ret = spl_load_fit_image(info, sector, ctx, node,
394 /* Make the load-address of the FDT available for the SPL framework */
395 spl_image->fdt_addr = map_sysmem(image_info.load_addr, 0);
396 if (CONFIG_IS_ENABLED(FIT_IMAGE_TINY))
399 #if CONFIG_IS_ENABLED(LOAD_FIT_APPLY_OVERLAY)
400 void *tmpbuffer = NULL;
403 node = spl_fit_get_image_node(ctx, FIT_FDT_PROP, index);
404 if (node == -E2BIG) {
405 debug("%s: No additional FDT node\n", __func__);
407 } else if (node < 0) {
408 debug("%s: unable to find FDT node %d\n",
415 * allocate memory to store the DT overlay
416 * before it is applied. It may not be used
417 * depending on how the overlay is stored, so
418 * don't fail yet if the allocation failed.
420 size_t size = CONFIG_SPL_LOAD_FIT_APPLY_OVERLAY_BUF_SZ;
422 tmpbuffer = malloc_cache_aligned(size);
424 debug("%s: unable to allocate space for overlays\n",
427 image_info.load_addr = (ulong)tmpbuffer;
428 ret = spl_load_fit_image(info, sector, ctx,
433 /* Make room in FDT for changes from the overlay */
434 ret = fdt_increase_size(spl_image->fdt_addr,
439 ret = fdt_overlay_apply_verbose(spl_image->fdt_addr,
440 (void *)image_info.load_addr);
442 pr_err("failed to apply DT overlay %s\n",
443 fit_get_name(ctx->fit, node, NULL));
447 debug("%s: DT overlay %s applied\n", __func__,
448 fit_get_name(ctx->fit, node, NULL));
454 /* Try to make space, so we can inject details on the loadables */
455 ret = fdt_shrink_to_minimum(spl_image->fdt_addr, 8192);
462 static int spl_fit_record_loadable(const struct spl_fit_info *ctx, int index,
463 void *blob, struct spl_image_info *image)
469 if (CONFIG_IS_ENABLED(FIT_IMAGE_TINY))
472 ret = spl_fit_get_image_name(ctx, "loadables", index, &name);
476 node = spl_fit_get_image_node(ctx, "loadables", index);
478 ret = fdt_record_loadable(blob, index, name, image->load_addr,
479 image->size, image->entry_point,
480 fdt_getprop(ctx->fit, node, "type", NULL),
481 fdt_getprop(ctx->fit, node, "os", NULL),
482 fdt_getprop(ctx->fit, node, "arch", NULL));
486 static int spl_fit_image_is_fpga(const void *fit, int node)
490 if (!IS_ENABLED(CONFIG_SPL_FPGA))
493 type = fdt_getprop(fit, node, FIT_TYPE_PROP, NULL);
497 return !strcmp(type, "fpga");
500 static int spl_fit_image_get_os(const void *fit, int noffset, uint8_t *os)
502 if (!CONFIG_IS_ENABLED(FIT_IMAGE_TINY) || CONFIG_IS_ENABLED(OS_BOOT))
503 return fit_image_get_os(fit, noffset, os);
505 const char *name = fdt_getprop(fit, noffset, FIT_OS_PROP, NULL);
510 * We don't care what the type of the image actually is,
511 * only whether or not it is U-Boot. This saves some
512 * space by omitting the large table of OS types.
514 if (!strcmp(name, "u-boot"))
523 * The purpose of the FIT load buffer is to provide a memory location that is
524 * independent of the load address of any FIT component.
526 static void *spl_get_fit_load_buffer(size_t size)
530 buf = malloc_cache_aligned(size);
532 pr_err("Could not get FIT buffer of %lu bytes\n", (ulong)size);
533 pr_err("\tcheck CONFIG_SYS_SPL_MALLOC_SIZE\n");
534 buf = spl_get_load_buffer(0, size);
539 __weak void *board_spl_fit_buffer_addr(ulong fit_size, int sectors, int bl_len)
541 return spl_get_fit_load_buffer(sectors * bl_len);
545 * Weak default function to allow customizing SPL fit loading for load-only
546 * use cases by allowing to skip the parsing/processing of the FIT contents
547 * (so that this can be done separately in a more customized fashion)
549 __weak bool spl_load_simple_fit_skip_processing(void)
555 * Weak default function to allow fixes after fit header
558 __weak void *spl_load_simple_fit_fix_load(const void *fit)
563 static void warn_deprecated(const char *msg)
565 printf("DEPRECATED: %s\n", msg);
566 printf("\tSee doc/uImage.FIT/source_file_format.txt\n");
569 static int spl_fit_upload_fpga(struct spl_fit_info *ctx, int node,
570 struct spl_image_info *fpga_image)
572 const char *compatible;
577 debug("FPGA bitstream at: %x, size: %x\n",
578 (u32)fpga_image->load_addr, fpga_image->size);
580 compatible = fdt_getprop(ctx->fit, node, "compatible", NULL);
582 warn_deprecated("'fpga' image without 'compatible' property");
584 if (CONFIG_IS_ENABLED(FPGA_LOAD_SECURE))
585 flags = fpga_compatible2flag(devnum, compatible);
586 if (strcmp(compatible, "u-boot,fpga-legacy"))
587 debug("Ignoring compatible = %s property\n",
591 ret = fpga_load(devnum, (void *)fpga_image->load_addr,
592 fpga_image->size, BIT_FULL, flags);
594 printf("%s: Cannot load the image to the FPGA\n", __func__);
598 puts("FPGA image loaded from FIT\n");
603 static int spl_fit_load_fpga(struct spl_fit_info *ctx,
604 struct spl_load_info *info, ulong sector)
608 struct spl_image_info fpga_image = {
612 node = spl_fit_get_image_node(ctx, "fpga", 0);
616 warn_deprecated("'fpga' property in config node. Use 'loadables'");
618 /* Load the image and set up the fpga_image structure */
619 ret = spl_load_fit_image(info, sector, ctx, node, &fpga_image);
621 printf("%s: Cannot load the FPGA: %i\n", __func__, ret);
625 return spl_fit_upload_fpga(ctx, node, &fpga_image);
628 static int spl_simple_fit_read(struct spl_fit_info *ctx,
629 struct spl_load_info *info, ulong sector,
630 const void *fit_header)
632 unsigned long count, size;
637 * For FIT with external data, figure out where the external images
638 * start. This is the base for the data-offset properties in each
641 size = ALIGN(fdt_totalsize(fit_header), 4);
642 size = board_spl_fit_size_align(size);
643 ctx->ext_data_offset = ALIGN(size, 4);
646 * So far we only have one block of data from the FIT. Read the entire
647 * thing, including that first block.
649 * For FIT with data embedded, data is loaded as part of FIT image.
650 * For FIT with external data, data is not loaded in this step.
652 sectors = get_aligned_image_size(info, size, 0);
653 buf = board_spl_fit_buffer_addr(size, sectors, info->bl_len);
655 count = info->read(info, sector, sectors, buf);
657 debug("fit read sector %lx, sectors=%d, dst=%p, count=%lu, size=0x%lx\n",
658 sector, sectors, buf, count, size);
660 return (count == 0) ? -EIO : 0;
663 static int spl_simple_fit_parse(struct spl_fit_info *ctx)
665 /* Find the correct subnode under "/configurations" */
666 ctx->conf_node = fit_find_config_node(ctx->fit);
667 if (ctx->conf_node < 0)
670 if (IS_ENABLED(CONFIG_SPL_FIT_SIGNATURE)) {
671 printf("## Checking hash(es) for config %s ... ",
672 fit_get_name(ctx->fit, ctx->conf_node, NULL));
673 if (fit_config_verify(ctx->fit, ctx->conf_node))
678 /* find the node holding the images information */
679 ctx->images_node = fdt_path_offset(ctx->fit, FIT_IMAGES_PATH);
680 if (ctx->images_node < 0) {
681 debug("%s: Cannot find /images node: %d\n", __func__,
689 int spl_load_simple_fit(struct spl_image_info *spl_image,
690 struct spl_load_info *info, ulong sector, void *fit)
692 struct spl_image_info image_info;
693 struct spl_fit_info ctx;
699 ret = spl_simple_fit_read(&ctx, info, sector, fit);
703 /* skip further processing if requested to enable load-only use cases */
704 if (spl_load_simple_fit_skip_processing())
707 ctx.fit = spl_load_simple_fit_fix_load(ctx.fit);
709 ret = spl_simple_fit_parse(&ctx);
713 if (IS_ENABLED(CONFIG_SPL_FPGA))
714 spl_fit_load_fpga(&ctx, info, sector);
717 * Find the U-Boot image using the following search order:
718 * - start at 'firmware' (e.g. an ARM Trusted Firmware)
719 * - fall back 'kernel' (e.g. a Falcon-mode OS boot
720 * - fall back to using the first 'loadables' entry
723 node = spl_fit_get_image_node(&ctx, FIT_FIRMWARE_PROP, 0);
725 if (node < 0 && IS_ENABLED(CONFIG_SPL_OS_BOOT))
726 node = spl_fit_get_image_node(&ctx, FIT_KERNEL_PROP, 0);
729 debug("could not find firmware image, trying loadables...\n");
730 node = spl_fit_get_image_node(&ctx, "loadables", 0);
732 * If we pick the U-Boot image from "loadables", start at
733 * the second image when later loading additional images.
738 debug("%s: Cannot find u-boot image node: %d\n",
743 /* Load the image and set up the spl_image structure */
744 ret = spl_load_fit_image(info, sector, &ctx, node, spl_image);
749 * For backward compatibility, we treat the first node that is
750 * as a U-Boot image, if no OS-type has been declared.
752 if (!spl_fit_image_get_os(ctx.fit, node, &spl_image->os))
753 debug("Image OS is %s\n", genimg_get_os_name(spl_image->os));
754 else if (!IS_ENABLED(CONFIG_SPL_OS_BOOT))
755 spl_image->os = IH_OS_U_BOOT;
758 * Booting a next-stage U-Boot may require us to append the FDT.
759 * We allow this to fail, as the U-Boot image might embed its FDT.
761 if (os_takes_devicetree(spl_image->os)) {
762 ret = spl_fit_append_fdt(spl_image, info, sector, &ctx);
763 if (ret < 0 && spl_image->os != IH_OS_U_BOOT)
767 firmware_node = node;
768 /* Now check if there are more images for us to load */
770 uint8_t os_type = IH_OS_INVALID;
772 node = spl_fit_get_image_node(&ctx, "loadables", index);
777 * if the firmware is also a loadable, skip it because
778 * it already has been loaded. This is typically the case with
779 * u-boot.img generated by mkimage.
781 if (firmware_node == node)
784 image_info.load_addr = 0;
785 ret = spl_load_fit_image(info, sector, &ctx, node, &image_info);
787 printf("%s: can't load image loadables index %d (ret = %d)\n",
788 __func__, index, ret);
792 if (spl_fit_image_is_fpga(ctx.fit, node))
793 spl_fit_upload_fpga(&ctx, node, &image_info);
795 if (!spl_fit_image_get_os(ctx.fit, node, &os_type))
796 debug("Loadable is %s\n", genimg_get_os_name(os_type));
798 if (os_takes_devicetree(os_type)) {
799 spl_fit_append_fdt(&image_info, info, sector, &ctx);
800 spl_image->fdt_addr = image_info.fdt_addr;
804 * If the "firmware" image did not provide an entry point,
805 * use the first valid entry point from the loadables.
807 if (spl_image->entry_point == FDT_ERROR &&
808 image_info.entry_point != FDT_ERROR)
809 spl_image->entry_point = image_info.entry_point;
811 /* Record our loadables into the FDT */
812 if (spl_image->fdt_addr)
813 spl_fit_record_loadable(&ctx, index,
819 * If a platform does not provide CFG_SYS_UBOOT_START, U-Boot's
820 * Makefile will set it to 0 and it will end up as the entry point
821 * here. What it actually means is: use the load address.
823 if (spl_image->entry_point == FDT_ERROR || spl_image->entry_point == 0)
824 spl_image->entry_point = spl_image->load_addr;
826 spl_image->flags |= SPL_FIT_FOUND;