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 <linux/libfdt.h>
16
17 #ifndef CONFIG_SPL_LOAD_FIT_ADDRESS
18 # define CONFIG_SPL_LOAD_FIT_ADDRESS 0
19 #endif
20
spl_ram_load_read(struct spl_load_info * load,ulong sector,ulong count,void * buf)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
spl_ram_load_image(struct spl_image_info * spl_image,struct spl_boot_device * bootdev)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 CONFIG_IS_ENABLED(DFU)
38 if (bootdev->boot_device == BOOT_DEVICE_DFU)
39 spl_dfu_cmd(0, "dfu_alt_info_ram", "ram", "0");
40 #endif
41
42 #ifdef CONFIG_SPL_FIT_IMAGE_MULTIPLE
43 if ((IS_ENABLED(CONFIG_SPL_LOAD_FIT) &&
44 image_get_magic(header) == FDT_MAGIC) ||
45 CONFIG_SPL_FIT_IMAGE_MULTIPLE > 1) {
46 #else
47 if (IS_ENABLED(CONFIG_SPL_LOAD_FIT) &&
48 image_get_magic(header) == FDT_MAGIC) {
49 #endif
50 struct spl_load_info load;
51
52 debug("Found FIT\n");
53 load.bl_len = 1;
54 load.read = spl_ram_load_read;
55 spl_load_simple_fit(spl_image, &load, 0, header);
56 } else {
57 debug("Legacy image\n");
58 /*
59 * Get the header. It will point to an address defined by
60 * handoff which will tell where the image located inside
61 * the flash. For now, it will temporary fixed to address
62 * pointed by U-Boot.
63 */
64 header = (struct image_header *)
65 (CONFIG_SYS_TEXT_BASE - sizeof(struct image_header));
66
67 spl_parse_image_header(spl_image, header);
68 }
69
70 return 0;
71 }
72 #if defined(CONFIG_SPL_RAM_DEVICE)
73 SPL_LOAD_IMAGE_METHOD("RAM", 0, BOOT_DEVICE_RAM, spl_ram_load_image);
74 #endif
75 #if CONFIG_IS_ENABLED(DFU)
76 SPL_LOAD_IMAGE_METHOD("DFU", 0, BOOT_DEVICE_DFU, spl_ram_load_image);
77 #endif
78
79
80