xref: /openbmc/u-boot/common/spl/spl_nor.c (revision 1494cc89)
1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  * Copyright (C) 2012 Stefan Roese <sr@denx.de>
4  */
5 
6 #include <common.h>
7 #include <spl.h>
8 
9 static int spl_nor_load_image(struct spl_image_info *spl_image,
10 			      struct spl_boot_device *bootdev)
11 {
12 	int ret;
13 	/*
14 	 * Loading of the payload to SDRAM is done with skipping of
15 	 * the mkimage header in this SPL NOR driver
16 	 */
17 	spl_image->flags |= SPL_COPY_PAYLOAD_ONLY;
18 
19 #ifdef CONFIG_SPL_OS_BOOT
20 	if (!spl_start_uboot()) {
21 		const struct image_header *header;
22 
23 		/*
24 		 * Load Linux from its location in NOR flash to its defined
25 		 * location in SDRAM
26 		 */
27 		header = (const struct image_header *)CONFIG_SYS_OS_BASE;
28 
29 		if (image_get_os(header) == IH_OS_LINUX) {
30 			/* happy - was a Linux */
31 
32 			ret = spl_parse_image_header(spl_image, header);
33 			if (ret)
34 				return ret;
35 
36 			memcpy((void *)spl_image->load_addr,
37 			       (void *)(CONFIG_SYS_OS_BASE +
38 					sizeof(struct image_header)),
39 			       spl_image->size);
40 
41 			spl_image->arg = (void *)CONFIG_SYS_FDT_BASE;
42 
43 			return 0;
44 		} else {
45 			puts("The Expected Linux image was not found.\n"
46 			     "Please check your NOR configuration.\n"
47 			     "Trying to start u-boot now...\n");
48 		}
49 	}
50 #endif
51 
52 	/*
53 	 * Load real U-Boot from its location in NOR flash to its
54 	 * defined location in SDRAM
55 	 */
56 	ret = spl_parse_image_header(spl_image,
57 			(const struct image_header *)CONFIG_SYS_UBOOT_BASE);
58 	if (ret)
59 		return ret;
60 
61 	memcpy((void *)(unsigned long)spl_image->load_addr,
62 	       (void *)(CONFIG_SYS_UBOOT_BASE + sizeof(struct image_header)),
63 	       spl_image->size);
64 
65 	return 0;
66 }
67 SPL_LOAD_IMAGE_METHOD("NOR", 0, BOOT_DEVICE_NOR, spl_nor_load_image);
68