projects / J-u-boot.git / blame
| Commit | Line | Data |
|---|---|---|
| 92926bc8 CJF |
1 | /* |
| 2 | * (C) Copyright 2017 | |
| 3 | * Texas Instruments, <www.ti.com> | |
| 4 | * | |
| 5 | * Franklin S Cooper Jr. <[email protected]> | |
| 6 | * | |
| 7 | * SPDX-License-Identifier: GPL-2.0+ | |
| 8 | */ | |
| 9 | ||
| 10 | #include <boot_fit.h> | |
| 11 | #include <common.h> | |
| 12 | #include <errno.h> | |
| 13 | #include <image.h> | |
| 14 | #include <libfdt.h> | |
| 15 | ||
| 906a9dbb | 16 | static int fdt_offset(const void *fit) |
| 92926bc8 CJF |
17 | { |
| 18 | int images, node, fdt_len, fdt_node, fdt_offset; | |
| 19 | const char *fdt_name; | |
| 20 | ||
| 21 | node = fit_find_config_node(fit); | |
| 22 | if (node < 0) | |
| 23 | return node; | |
| 24 | ||
| 25 | images = fdt_path_offset(fit, FIT_IMAGES_PATH); | |
| 26 | if (images < 0) { | |
| 27 | debug("%s: Cannot find /images node: %d\n", __func__, images); | |
| 160cfc4b | 28 | return -EINVAL; |
| 92926bc8 CJF |
29 | } |
| 30 | ||
| 31 | fdt_name = fdt_getprop(fit, node, FIT_FDT_PROP, &fdt_len); | |
| 32 | if (!fdt_name) { | |
| 33 | debug("%s: Cannot find fdt name property: %d\n", | |
| 34 | __func__, fdt_len); | |
| 35 | return -EINVAL; | |
| 36 | } | |
| 37 | ||
| 38 | fdt_node = fdt_subnode_offset(fit, images, fdt_name); | |
| 39 | if (fdt_node < 0) { | |
| 40 | debug("%s: Cannot find fdt node '%s': %d\n", | |
| 41 | __func__, fdt_name, fdt_node); | |
| 42 | return -EINVAL; | |
| 43 | } | |
| 44 | ||
| 45 | fdt_offset = fdt_getprop_u32(fit, fdt_node, "data-offset"); | |
| 46 | ||
| 47 | if (fdt_offset == FDT_ERROR) | |
| 48 | return -ENOENT; | |
| 49 | ||
| 50 | fdt_len = fdt_getprop_u32(fit, fdt_node, "data-size"); | |
| 51 | ||
| 52 | if (fdt_len < 0) | |
| 53 | return fdt_len; | |
| 54 | ||
| 55 | return fdt_offset; | |
| 56 | } | |
| 57 | ||
| 906a9dbb | 58 | void *locate_dtb_in_fit(const void *fit) |
| 92926bc8 CJF |
59 | { |
| 60 | struct image_header *header; | |
| 61 | int size; | |
| 62 | int ret; | |
| 63 | ||
| 64 | size = fdt_totalsize(fit); | |
| 65 | size = (size + 3) & ~3; | |
| 66 | ||
| 67 | header = (struct image_header *)fit; | |
| 68 | ||
| 69 | if (image_get_magic(header) != FDT_MAGIC) { | |
| 70 | debug("No FIT image appended to U-boot\n"); | |
| 71 | return NULL; | |
| 72 | } | |
| 73 | ||
| 74 | ret = fdt_offset(fit); | |
| 75 | ||
| 76 | if (ret <= 0) | |
| 77 | return NULL; | |
| 78 | else | |
| 79 | return (void *)fit+size+ret; | |
| 80 | } |