Merge tag 'xilinx-for-v2022.01-rc1' of https://source.denx.de/u-boot/custodians/u...
[platform/kernel/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 <image.h>
15 #include <log.h>
16 #include <mapmem.h>
17 #include <spl.h>
18 #include <linux/libfdt.h>
19
20 #ifndef CONFIG_SPL_LOAD_FIT_ADDRESS
21 # define CONFIG_SPL_LOAD_FIT_ADDRESS    0
22 #endif
23
24 static ulong spl_ram_load_read(struct spl_load_info *load, ulong sector,
25                                ulong count, void *buf)
26 {
27         debug("%s: sector %lx, count %lx, buf %lx\n",
28               __func__, sector, count, (ulong)buf);
29         memcpy(buf, (void *)(CONFIG_SPL_LOAD_FIT_ADDRESS + sector), count);
30         return count;
31 }
32
33 static int spl_ram_load_image(struct spl_image_info *spl_image,
34                               struct spl_boot_device *bootdev)
35 {
36         struct image_header *header;
37
38         header = (struct image_header *)CONFIG_SPL_LOAD_FIT_ADDRESS;
39
40 #if CONFIG_IS_ENABLED(DFU)
41         if (bootdev->boot_device == BOOT_DEVICE_DFU)
42                 spl_dfu_cmd(0, "dfu_alt_info_ram", "ram", "0");
43 #endif
44
45         if (IS_ENABLED(CONFIG_SPL_LOAD_FIT) &&
46             image_get_magic(header) == FDT_MAGIC) {
47                 struct spl_load_info load;
48
49                 debug("Found FIT\n");
50                 load.bl_len = 1;
51                 load.read = spl_ram_load_read;
52                 spl_load_simple_fit(spl_image, &load, 0, header);
53         } else {
54                 ulong u_boot_pos = binman_sym(ulong, u_boot_any, image_pos);
55
56                 debug("Legacy image\n");
57                 /*
58                  * Get the header.  It will point to an address defined by
59                  * handoff which will tell where the image located inside
60                  * the flash.
61                  */
62                 debug("u_boot_pos = %lx\n", u_boot_pos);
63                 if (u_boot_pos == BINMAN_SYM_MISSING) {
64                         /*
65                          * No binman support or no information. For now, fix it
66                          * to the address pointed to by U-Boot.
67                          */
68                         u_boot_pos = (ulong)spl_get_load_buffer(-sizeof(*header),
69                                                                 sizeof(*header));
70                 }
71                 header = (struct image_header *)map_sysmem(u_boot_pos, 0);
72
73                 spl_parse_image_header(spl_image, header);
74         }
75
76         return 0;
77 }
78 #if CONFIG_IS_ENABLED(RAM_DEVICE)
79 SPL_LOAD_IMAGE_METHOD("RAM", 0, BOOT_DEVICE_RAM, spl_ram_load_image);
80 #endif
81 #if CONFIG_IS_ENABLED(DFU)
82 SPL_LOAD_IMAGE_METHOD("DFU", 0, BOOT_DEVICE_DFU, spl_ram_load_image);
83 #endif