xref: /openbmc/u-boot/common/spl/spl_nor.c (revision ebce73f0)
1 /*
2  * Copyright (C) 2012 Stefan Roese <sr@denx.de>
3  *
4  * SPDX-License-Identifier:	GPL-2.0+
5  */
6 
7 #include <common.h>
8 #include <spl.h>
9 
10 static int spl_nor_load_image(struct spl_image_info *spl_image,
11 			      struct spl_boot_device *bootdev)
12 {
13 	int ret;
14 	/*
15 	 * Loading of the payload to SDRAM is done with skipping of
16 	 * the mkimage header in this SPL NOR driver
17 	 */
18 	spl_image->flags |= SPL_COPY_PAYLOAD_ONLY;
19 
20 #ifdef CONFIG_SPL_OS_BOOT
21 	if (!spl_start_uboot()) {
22 		const struct image_header *header;
23 
24 		/*
25 		 * Load Linux from its location in NOR flash to its defined
26 		 * location in SDRAM
27 		 */
28 		header = (const struct image_header *)CONFIG_SYS_OS_BASE;
29 
30 		if (image_get_os(header) == IH_OS_LINUX) {
31 			/* happy - was a Linux */
32 
33 			ret = spl_parse_image_header(spl_image, header);
34 			if (ret)
35 				return ret;
36 
37 			memcpy((void *)spl_image->load_addr,
38 			       (void *)(CONFIG_SYS_OS_BASE +
39 					sizeof(struct image_header)),
40 			       spl_image->size);
41 
42 			spl_image->arg = (void *)CONFIG_SYS_FDT_BASE;
43 
44 			return 0;
45 		} else {
46 			puts("The Expected Linux image was not found.\n"
47 			     "Please check your NOR configuration.\n"
48 			     "Trying to start u-boot now...\n");
49 		}
50 	}
51 #endif
52 
53 	/*
54 	 * Load real U-Boot from its location in NOR flash to its
55 	 * defined location in SDRAM
56 	 */
57 	ret = spl_parse_image_header(spl_image,
58 			(const struct image_header *)CONFIG_SYS_UBOOT_BASE);
59 	if (ret)
60 		return ret;
61 
62 	memcpy((void *)(unsigned long)spl_image->load_addr,
63 	       (void *)(CONFIG_SYS_UBOOT_BASE + sizeof(struct image_header)),
64 	       spl_image->size);
65 
66 	return 0;
67 }
68 SPL_LOAD_IMAGE_METHOD("NOR", 0, BOOT_DEVICE_NOR, spl_nor_load_image);
69