LXR uboot/board/emulation/qemu-riscv/qemu-riscv.c

   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 <dm/ofnode.h>
   9#include <env.h>
  10#include <fdtdec.h>
  11#include <image.h>
  12#include <log.h>
  13#include <spl.h>
  14#include <init.h>
  15#include <virtio_types.h>
  16#include <virtio.h>
  17
  18DECLARE_GLOBAL_DATA_PTR;
  19
  20#if IS_ENABLED(CONFIG_MTD_NOR_FLASH)
  21int is_flash_available(void)
  22{
  23        if (!ofnode_equal(ofnode_by_compatible(ofnode_null(), "cfi-flash"),
  24                          ofnode_null()))
  25                return 1;
  26
  27        return 0;
  28}
  29#endif
  30
  31int board_init(void)
  32{
  33        /*
  34         * Make sure virtio bus is enumerated so that peripherals
  35         * on the virtio bus can be discovered by their drivers
  36         */
  37        virtio_init();
  38
  39        return 0;
  40}
  41
  42int board_late_init(void)
  43{
  44        ulong kernel_start;
  45        ofnode chosen_node;
  46        int ret;
  47
  48        chosen_node = ofnode_path("/chosen");
  49        if (!ofnode_valid(chosen_node)) {
  50                debug("No chosen node found, can't get kernel start address\n");
  51                return 0;
  52        }
  53
  54#ifdef CONFIG_ARCH_RV64I
  55        ret = ofnode_read_u64(chosen_node, "riscv,kernel-start",
  56                              (u64 *)&kernel_start);
  57#else
  58        ret = ofnode_read_u32(chosen_node, "riscv,kernel-start",
  59                              (u32 *)&kernel_start);
  60#endif
  61        if (ret) {
  62                debug("Can't find kernel start address in device tree\n");
  63                return 0;
  64        }
  65
  66        env_set_hex("kernel_start", kernel_start);
  67
  68        return 0;
  69}
  70
  71#ifdef CONFIG_SPL
  72u32 spl_boot_device(void)
  73{
  74        /* RISC-V QEMU only supports RAM as SPL boot device */
  75        return BOOT_DEVICE_RAM;
  76}
  77#endif
  78
  79#ifdef CONFIG_SPL_LOAD_FIT
  80int board_fit_config_name_match(const char *name)
  81{
  82        /* boot using first FIT config */
  83        return 0;
  84}
  85#endif
  86
  87void *board_fdt_blob_setup(int *err)
  88{
  89        *err = 0;
  90        /* Stored the DTB address there during our init */
  91        return (void *)(ulong)gd->arch.firmware_fdt_addr;
  92}
  93