| /* |
| * Copyright 2018 Google LLC |
| * |
| * 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/addr.h" |
| #include "hf/dlog.h" |
| #include "hf/fdt_handler.h" |
| |
| /* This is set by plat_entry.S. */ |
| uintpaddr_t plat_fdt_addr; |
| |
| paddr_t plat_get_fdt_addr(void) |
| { |
| return pa_init(plat_fdt_addr); |
| } |
| |
| void plat_get_initrd_range(paddr_t *begin, paddr_t *end) |
| { |
| struct fdt_header *fdt; |
| struct fdt_node n; |
| |
| /* Get the memory map from the FDT. */ |
| fdt = fdt_map(plat_get_fdt_addr(), &n); |
| if (!fdt) { |
| return; |
| } |
| |
| if (!fdt_find_child(&n, "")) { |
| dlog("Unable to find FDT root node.\n"); |
| goto out_unmap_fdt; |
| } |
| |
| fdt_find_initrd(&n, begin, end); |
| |
| out_unmap_fdt: |
| if (!fdt_unmap(fdt)) { |
| dlog("Unable to unmap fdt."); |
| } |
| } |