1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (C) 2018, Bin Meng <bmeng.cn@gmail.com>
12 #include <virtio_types.h>
18 * Make sure virtio bus is enumerated so that peripherals
19 * on the virtio bus can be discovered by their drivers
26 int board_late_init(void)
32 chosen_node = ofnode_path("/chosen");
33 if (!ofnode_valid(chosen_node)) {
34 debug("No chosen node found, can't get kernel start address\n");
38 #ifdef CONFIG_ARCH_RV64I
39 ret = ofnode_read_u64(chosen_node, "riscv,kernel-start",
40 (u64 *)&kernel_start);
42 ret = ofnode_read_u32(chosen_node, "riscv,kernel-start",
43 (u32 *)&kernel_start);
46 debug("Can't find kernel start address in device tree\n");
50 env_set_hex("kernel_start", kernel_start);
56 * QEMU specifies the location of Linux (supplied with the -kernel argument)
57 * in the device tree using the riscv,kernel-start and riscv,kernel-end
58 * properties. We currently rely on the SBI implementation of BBL to run
59 * Linux and therefore embed Linux as payload in BBL. This causes an issue,
60 * because BBL detects the kernel properties in the device tree and ignores
61 * the Linux payload as a result. To work around this issue, we clear the
62 * kernel properties before booting Linux.
64 * This workaround can be removed, once we do not require BBL for its SBI
65 * implementation anymore.
67 int ft_board_setup(void *blob, bd_t *bd)
69 int chosen_offset, ret;
71 chosen_offset = fdt_path_offset(blob, "/chosen");
72 if (chosen_offset < 0)
75 #ifdef CONFIG_ARCH_RV64I
76 ret = fdt_setprop_u64(blob, chosen_offset, "riscv,kernel-start", 0);
78 ret = fdt_setprop_u32(blob, chosen_offset, "riscv,kernel-start", 0);
83 #ifdef CONFIG_ARCH_RV64I
84 ret = fdt_setprop_u64(blob, chosen_offset, "riscv,kernel-end", 0);
86 ret = fdt_setprop_u32(blob, chosen_offset, "riscv,kernel-end", 0);
95 u32 spl_boot_device(void)
97 /* RISC-V QEMU only supports RAM as SPL boot device */
98 return BOOT_DEVICE_RAM;
102 #ifdef CONFIG_SPL_LOAD_FIT
103 int board_fit_config_name_match(const char *name)
105 /* boot using first FIT config */