xref: /openbmc/u-boot/arch/sandbox/cpu/spl.c (revision f3af98ec)
1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  * Copyright (c) 2016 Google, Inc
4  */
5 
6 #include <common.h>
7 #include <dm.h>
8 #include <os.h>
9 #include <spl.h>
10 #include <asm/spl.h>
11 #include <asm/state.h>
12 
13 DECLARE_GLOBAL_DATA_PTR;
14 
15 void board_init_f(ulong flag)
16 {
17 	struct sandbox_state *state = state_get_current();
18 
19 	gd->arch.ram_buf = state->ram_buf;
20 	gd->ram_size = state->ram_size;
21 }
22 
23 u32 spl_boot_device(void)
24 {
25 	return BOOT_DEVICE_BOARD;
26 }
27 
28 static int spl_board_load_image(struct spl_image_info *spl_image,
29 				struct spl_boot_device *bootdev)
30 {
31 	char fname[256];
32 	int ret;
33 
34 	ret = os_find_u_boot(fname, sizeof(fname));
35 	if (ret) {
36 		printf("(%s not found, error %d)\n", fname, ret);
37 		return ret;
38 	}
39 
40 	/* Set up spl_image to boot from jump_to_image_no_args() */
41 	spl_image->arg = strdup(fname);
42 	if (!spl_image->arg)
43 		return log_msg_ret("Setup exec filename", -ENOMEM);
44 
45 	return 0;
46 }
47 SPL_LOAD_IMAGE_METHOD("sandbox", 0, BOOT_DEVICE_BOARD, spl_board_load_image);
48 
49 void spl_board_init(void)
50 {
51 	struct sandbox_state *state = state_get_current();
52 	struct udevice *dev;
53 
54 	preloader_console_init();
55 	if (state->show_of_platdata) {
56 		/*
57 		 * Scan all the devices so that we can output their platform
58 		 * data. See sandbox_spl_probe().
59 		 */
60 		printf("Scanning misc devices\n");
61 		for (uclass_first_device(UCLASS_MISC, &dev);
62 		     dev;
63 		     uclass_next_device(&dev))
64 			;
65 	}
66 }
67 
68 void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image)
69 {
70 	const char *fname = spl_image->arg;
71 
72 	if (fname) {
73 		os_fd_restore();
74 		os_spl_to_uboot(fname);
75 	} else {
76 		printf("No filename provided for U-Boot\n");
77 	}
78 	hang();
79 }
80