| /* |
| * Copyright 2019 The Hafnium Authors. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * https://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include "hf/fdt_handler.h" |
| #include "hf/plat/boot_flow.h" |
| |
| /* Set by arch-specific boot-time hook. */ |
| uintreg_t plat_fdt_addr; |
| |
| /** |
| * Returns the physical address of board FDT. This was passed to Hafnium in the |
| * first kernel arg by the boot loader. |
| */ |
| paddr_t plat_get_fdt_addr(void) |
| { |
| return pa_init((uintpaddr_t)plat_fdt_addr); |
| } |
| |
| /** |
| * When handing over to the primary, give it the same FDT address that was given |
| * to Hafnium. The FDT may have been modified during Hafnium init. |
| */ |
| uintreg_t plat_get_kernel_arg(void) |
| { |
| return plat_fdt_addr; |
| } |
| |
| /** |
| * Load initrd range from the board FDT. |
| */ |
| bool plat_get_initrd_range(const struct fdt_node *fdt_root, paddr_t *begin, |
| paddr_t *end) |
| { |
| return fdt_find_initrd(fdt_root, begin, end); |
| } |