1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  * Copyright (C) 2018, Bin Meng <bmeng.cn@gmail.com>
4  */
5 
6 #include <common.h>
7 #include <dm.h>
8 #include <env.h>
9 #include <fdtdec.h>
10 #include <image.h>
11 #include <log.h>
12 #include <spl.h>
13 #include <init.h>
14 #include <virtio_types.h>
15 #include <virtio.h>
16 
17 DECLARE_GLOBAL_DATA_PTR;
18 
board_init(void)19 int board_init(void)
20 {
21 	/*
22 	 * Make sure virtio bus is enumerated so that peripherals
23 	 * on the virtio bus can be discovered by their drivers
24 	 */
25 	virtio_init();
26 
27 	return 0;
28 }
29 
board_late_init(void)30 int board_late_init(void)
31 {
32 	ulong kernel_start;
33 	ofnode chosen_node;
34 	int ret;
35 
36 	chosen_node = ofnode_path("/chosen");
37 	if (!ofnode_valid(chosen_node)) {
38 		debug("No chosen node found, can't get kernel start address\n");
39 		return 0;
40 	}
41 
42 #ifdef CONFIG_ARCH_RV64I
43 	ret = ofnode_read_u64(chosen_node, "riscv,kernel-start",
44 			      (u64 *)&kernel_start);
45 #else
46 	ret = ofnode_read_u32(chosen_node, "riscv,kernel-start",
47 			      (u32 *)&kernel_start);
48 #endif
49 	if (ret) {
50 		debug("Can't find kernel start address in device tree\n");
51 		return 0;
52 	}
53 
54 	env_set_hex("kernel_start", kernel_start);
55 
56 	return 0;
57 }
58 
59 #ifdef CONFIG_SPL
spl_boot_device(void)60 u32 spl_boot_device(void)
61 {
62 	/* RISC-V QEMU only supports RAM as SPL boot device */
63 	return BOOT_DEVICE_RAM;
64 }
65 #endif
66 
67 #ifdef CONFIG_SPL_LOAD_FIT
board_fit_config_name_match(const char * name)68 int board_fit_config_name_match(const char *name)
69 {
70 	/* boot using first FIT config */
71 	return 0;
72 }
73 #endif
74 
board_fdt_blob_setup(int * err)75 void *board_fdt_blob_setup(int *err)
76 {
77 	*err = 0;
78 	/* Stored the DTB address there during our init */
79 	return (void *)(ulong)gd->arch.firmware_fdt_addr;
80 }
81