projects / thirdparty / u-boot.git / blame
| Commit | Line | Data |
|---|---|---|
| 83d290c5 | 1 | // SPDX-License-Identifier: GPL-2.0+ |
| 92926bc8 CJF |
2 | /* |
| 3 | * (C) Copyright 2017 | |
| 4 | * Texas Instruments, <www.ti.com> | |
| 5 | * | |
| 6 | * Franklin S Cooper Jr. <fcooper@ti.com> | |
| 92926bc8 CJF |
7 | */ |
| 8 | ||
| 9 | #include <boot_fit.h> | |
| 10 | #include <common.h> | |
| 11 | #include <errno.h> | |
| 12 | #include <image.h> | |
| b08c8c48 | 13 | #include <linux/libfdt.h> |
| 92926bc8 | 14 | |
| 906a9dbb | 15 | static int fdt_offset(const void *fit) |
| 92926bc8 CJF |
16 | { |
| 17 | int images, node, fdt_len, fdt_node, fdt_offset; | |
| 18 | const char *fdt_name; | |
| 19 | ||
| 20 | node = fit_find_config_node(fit); | |
| 21 | if (node < 0) | |
| 22 | return node; | |
| 23 | ||
| 24 | images = fdt_path_offset(fit, FIT_IMAGES_PATH); | |
| 25 | if (images < 0) { | |
| 26 | debug("%s: Cannot find /images node: %d\n", __func__, images); | |
| 160cfc4b | 27 | return -EINVAL; |
| 92926bc8 CJF |
28 | } |
| 29 | ||
| 30 | fdt_name = fdt_getprop(fit, node, FIT_FDT_PROP, &fdt_len); | |
| 31 | if (!fdt_name) { | |
| 32 | debug("%s: Cannot find fdt name property: %d\n", | |
| 33 | __func__, fdt_len); | |
| 34 | return -EINVAL; | |
| 35 | } | |
| 36 | ||
| 37 | fdt_node = fdt_subnode_offset(fit, images, fdt_name); | |
| 38 | if (fdt_node < 0) { | |
| 39 | debug("%s: Cannot find fdt node '%s': %d\n", | |
| 40 | __func__, fdt_name, fdt_node); | |
| 41 | return -EINVAL; | |
| 42 | } | |
| 43 | ||
| 44 | fdt_offset = fdt_getprop_u32(fit, fdt_node, "data-offset"); | |
| 45 | ||
| 46 | if (fdt_offset == FDT_ERROR) | |
| 47 | return -ENOENT; | |
| 48 | ||
| 49 | fdt_len = fdt_getprop_u32(fit, fdt_node, "data-size"); | |
| 50 | ||
| 51 | if (fdt_len < 0) | |
| 52 | return fdt_len; | |
| 53 | ||
| 54 | return fdt_offset; | |
| 55 | } | |
| 56 | ||
| 906a9dbb | 57 | void *locate_dtb_in_fit(const void *fit) |
| 92926bc8 CJF |
58 | { |
| 59 | struct image_header *header; | |
| 60 | int size; | |
| 61 | int ret; | |
| 62 | ||
| 63 | size = fdt_totalsize(fit); | |
| 64 | size = (size + 3) & ~3; | |
| 65 | ||
| 66 | header = (struct image_header *)fit; | |
| 67 | ||
| 68 | if (image_get_magic(header) != FDT_MAGIC) { | |
| 69 | debug("No FIT image appended to U-boot\n"); | |
| 70 | return NULL; | |
| 71 | } | |
| 72 | ||
| 73 | ret = fdt_offset(fit); | |
| 74 | ||
| d56b86ee | 75 | if (ret < 0) |
| 92926bc8 CJF |
76 | return NULL; |
| 77 | else | |
| 78 | return (void *)fit+size+ret; | |
| 79 | } |