efi_loader: remove superfluous check in efi_setup_loaded_image()
[oweals/u-boot.git] / common / spl / spl_ram.c
1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  * (C) Copyright 2016
4  * Xilinx, Inc.
5  *
6  * (C) Copyright 2016
7  * Toradex AG
8  *
9  * Michal Simek <michal.simek@xilinx.com>
10  * Stefan Agner <stefan.agner@toradex.com>
11  */
12 #include <common.h>
13 #include <binman_sym.h>
14 #include <mapmem.h>
15 #include <spl.h>
16 #include <linux/libfdt.h>
17
18 #ifndef CONFIG_SPL_LOAD_FIT_ADDRESS
19 # define CONFIG_SPL_LOAD_FIT_ADDRESS    0
20 #endif
21
22 static ulong spl_ram_load_read(struct spl_load_info *load, ulong sector,
23                                ulong count, void *buf)
24 {
25         debug("%s: sector %lx, count %lx, buf %lx\n",
26               __func__, sector, count, (ulong)buf);
27         memcpy(buf, (void *)(CONFIG_SPL_LOAD_FIT_ADDRESS + sector), count);
28         return count;
29 }
30
31 static int spl_ram_load_image(struct spl_image_info *spl_image,
32                               struct spl_boot_device *bootdev)
33 {
34         struct image_header *header;
35
36         header = (struct image_header *)CONFIG_SPL_LOAD_FIT_ADDRESS;
37
38 #if CONFIG_IS_ENABLED(DFU)
39         if (bootdev->boot_device == BOOT_DEVICE_DFU)
40                 spl_dfu_cmd(0, "dfu_alt_info_ram", "ram", "0");
41 #endif
42
43         if (IS_ENABLED(CONFIG_SPL_LOAD_FIT) &&
44             image_get_magic(header) == FDT_MAGIC) {
45                 struct spl_load_info load;
46
47                 debug("Found FIT\n");
48                 load.bl_len = 1;
49                 load.read = spl_ram_load_read;
50                 spl_load_simple_fit(spl_image, &load, 0, header);
51         } else {
52                 ulong u_boot_pos = binman_sym(ulong, u_boot_any, image_pos);
53
54                 debug("Legacy image\n");
55                 /*
56                  * Get the header.  It will point to an address defined by
57                  * handoff which will tell where the image located inside
58                  * the flash.
59                  */
60                 debug("u_boot_pos = %lx\n", u_boot_pos);
61                 if (u_boot_pos == BINMAN_SYM_MISSING) {
62                         /*
63                          * No binman support or no information. For now, fix it
64                          * to the address pointed to by U-Boot.
65                          */
66                         u_boot_pos = (ulong)spl_get_load_buffer(-sizeof(*header),
67                                                                 sizeof(*header));
68                 }
69                 header = (struct image_header *)map_sysmem(u_boot_pos, 0);
70
71                 spl_parse_image_header(spl_image, header);
72         }
73
74         return 0;
75 }
76 #if CONFIG_IS_ENABLED(RAM_DEVICE)
77 SPL_LOAD_IMAGE_METHOD("RAM", 0, BOOT_DEVICE_RAM, spl_ram_load_image);
78 #endif
79 #if CONFIG_IS_ENABLED(DFU)
80 SPL_LOAD_IMAGE_METHOD("DFU", 0, BOOT_DEVICE_DFU, spl_ram_load_image);
81 #endif
82
83