xref: /openbmc/u-boot/common/spl/spl_nor.c (revision cdef0b3f)
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 void spl_nor_load_image(void)
11 {
12 	/*
13 	 * Loading of the payload to SDRAM is done with skipping of
14 	 * the mkimage header in this SPL NOR driver
15 	 */
16 	spl_image.flags |= SPL_COPY_PAYLOAD_ONLY;
17 
18 #ifdef CONFIG_SPL_OS_BOOT
19 	if (!spl_start_uboot()) {
20 		const struct image_header *header;
21 
22 		/*
23 		 * Load Linux from its location in NOR flash to its defined
24 		 * location in SDRAM
25 		 */
26 		header = (const struct image_header *)CONFIG_SYS_OS_BASE;
27 
28 		if (image_get_os(header) == IH_OS_LINUX) {
29 			/* happy - was a Linux */
30 
31 			spl_parse_image_header(header);
32 
33 			memcpy((void *)spl_image.load_addr,
34 			       (void *)(CONFIG_SYS_OS_BASE +
35 					sizeof(struct image_header)),
36 			       spl_image.size);
37 
38 			/*
39 			 * Copy DT blob (fdt) to SDRAM. Passing pointer to
40 			 * flash doesn't work (16 KiB should be enough for DT)
41 			 */
42 			memcpy((void *)CONFIG_SYS_SPL_ARGS_ADDR,
43 			       (void *)(CONFIG_SYS_FDT_BASE),
44 			       (16 << 10));
45 
46 			return;
47 		} else {
48 			puts("The Expected Linux image was not found.\n"
49 			     "Please check your NOR configuration.\n"
50 			     "Trying to start u-boot now...\n");
51 		}
52 	}
53 #endif
54 
55 	/*
56 	 * Load real U-Boot from its location in NOR flash to its
57 	 * defined location in SDRAM
58 	 */
59 	spl_parse_image_header(
60 			(const struct image_header *)CONFIG_SYS_UBOOT_BASE);
61 
62 	memcpy((void *)spl_image.load_addr,
63 	       (void *)(CONFIG_SYS_UBOOT_BASE + sizeof(struct image_header)),
64 	       spl_image.size);
65 }
66