123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108 |
- // SPDX-License-Identifier: GPL-2.0+
- /*
- * Copyright (C) 2018, Bin Meng <bmeng.cn@gmail.com>
- */
- #include <common.h>
- #include <dm.h>
- #include <env.h>
- #include <fdtdec.h>
- #include <spl.h>
- #include <init.h>
- #include <virtio_types.h>
- #include <virtio.h>
- int board_init(void)
- {
- /*
- * Make sure virtio bus is enumerated so that peripherals
- * on the virtio bus can be discovered by their drivers
- */
- virtio_init();
- return 0;
- }
- int board_late_init(void)
- {
- ulong kernel_start;
- ofnode chosen_node;
- int ret;
- chosen_node = ofnode_path("/chosen");
- if (!ofnode_valid(chosen_node)) {
- debug("No chosen node found, can't get kernel start address\n");
- return 0;
- }
- #ifdef CONFIG_ARCH_RV64I
- ret = ofnode_read_u64(chosen_node, "riscv,kernel-start",
- (u64 *)&kernel_start);
- #else
- ret = ofnode_read_u32(chosen_node, "riscv,kernel-start",
- (u32 *)&kernel_start);
- #endif
- if (ret) {
- debug("Can't find kernel start address in device tree\n");
- return 0;
- }
- env_set_hex("kernel_start", kernel_start);
- return 0;
- }
- /*
- * QEMU specifies the location of Linux (supplied with the -kernel argument)
- * in the device tree using the riscv,kernel-start and riscv,kernel-end
- * properties. We currently rely on the SBI implementation of BBL to run
- * Linux and therefore embed Linux as payload in BBL. This causes an issue,
- * because BBL detects the kernel properties in the device tree and ignores
- * the Linux payload as a result. To work around this issue, we clear the
- * kernel properties before booting Linux.
- *
- * This workaround can be removed, once we do not require BBL for its SBI
- * implementation anymore.
- */
- int ft_board_setup(void *blob, bd_t *bd)
- {
- int chosen_offset, ret;
- chosen_offset = fdt_path_offset(blob, "/chosen");
- if (chosen_offset < 0)
- return 0;
- #ifdef CONFIG_ARCH_RV64I
- ret = fdt_setprop_u64(blob, chosen_offset, "riscv,kernel-start", 0);
- #else
- ret = fdt_setprop_u32(blob, chosen_offset, "riscv,kernel-start", 0);
- #endif
- if (ret)
- return ret;
- #ifdef CONFIG_ARCH_RV64I
- ret = fdt_setprop_u64(blob, chosen_offset, "riscv,kernel-end", 0);
- #else
- ret = fdt_setprop_u32(blob, chosen_offset, "riscv,kernel-end", 0);
- #endif
- if (ret)
- return ret;
- return 0;
- }
- #ifdef CONFIG_SPL
- u32 spl_boot_device(void)
- {
- /* RISC-V QEMU only supports RAM as SPL boot device */
- return BOOT_DEVICE_RAM;
- }
- #endif
- #ifdef CONFIG_SPL_LOAD_FIT
- int board_fit_config_name_match(const char *name)
- {
- /* boot using first FIT config */
- return 0;
- }
- #endif
|