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1 | /* |
2 | * (C) Copyright 2016 | |
3 | * Xilinx, Inc. | |
4 | * | |
5 | * (C) Copyright 2016 | |
6 | * Toradex AG | |
7 | * | |
8 | * Michal Simek <michal.simek@xilinx.com> | |
9 | * Stefan Agner <stefan.agner@toradex.com> | |
10 | * | |
11 | * SPDX-License-Identifier: GPL-2.0+ | |
12 | */ | |
13 | #include <common.h> | |
14 | #include <spl.h> | |
15 | #include <libfdt.h> | |
16 | ||
17 | #ifndef CONFIG_SPL_LOAD_FIT_ADDRESS | |
18 | # define CONFIG_SPL_LOAD_FIT_ADDRESS 0 | |
19 | #endif | |
20 | ||
21 | static ulong spl_ram_load_read(struct spl_load_info *load, ulong sector, | |
22 | ulong count, void *buf) | |
23 | { | |
24 | debug("%s: sector %lx, count %lx, buf %lx\n", | |
25 | __func__, sector, count, (ulong)buf); | |
26 | memcpy(buf, (void *)(CONFIG_SPL_LOAD_FIT_ADDRESS + sector), count); | |
27 | return count; | |
28 | } | |
29 | ||
30 | static int spl_ram_load_image(struct spl_image_info *spl_image, | |
31 | struct spl_boot_device *bootdev) | |
32 | { | |
33 | struct image_header *header; | |
34 | ||
35 | header = (struct image_header *)CONFIG_SPL_LOAD_FIT_ADDRESS; | |
36 | ||
37 | #if defined(CONFIG_SPL_DFU_SUPPORT) | |
38 | if (bootdev->boot_device == BOOT_DEVICE_DFU) | |
39 | spl_dfu_cmd(0, "dfu_alt_info_ram", "ram", "0"); | |
40 | #endif | |
41 | ||
42 | if (IS_ENABLED(CONFIG_SPL_LOAD_FIT) && | |
43 | image_get_magic(header) == FDT_MAGIC) { | |
44 | struct spl_load_info load; | |
45 | ||
46 | debug("Found FIT\n"); | |
47 | load.bl_len = 1; | |
48 | load.read = spl_ram_load_read; | |
49 | spl_load_simple_fit(spl_image, &load, 0, header); | |
50 | } else { | |
51 | debug("Legacy image\n"); | |
52 | /* | |
53 | * Get the header. It will point to an address defined by | |
54 | * handoff which will tell where the image located inside | |
55 | * the flash. For now, it will temporary fixed to address | |
56 | * pointed by U-Boot. | |
57 | */ | |
58 | header = (struct image_header *) | |
59 | (CONFIG_SYS_TEXT_BASE - sizeof(struct image_header)); | |
60 | ||
61 | spl_parse_image_header(spl_image, header); | |
62 | } | |
63 | ||
64 | return 0; | |
65 | } | |
66 | #if defined(CONFIG_SPL_RAM_DEVICE) | |
67 | SPL_LOAD_IMAGE_METHOD("RAM", 0, BOOT_DEVICE_RAM, spl_ram_load_image); | |
68 | #endif | |
69 | #if defined(CONFIG_SPL_DFU_SUPPORT) | |
70 | SPL_LOAD_IMAGE_METHOD("DFU", 0, BOOT_DEVICE_DFU, spl_ram_load_image); | |
71 | #endif | |
72 | ||
73 |