| Sughosh Ganu | 29c7e44 | 2024-10-25 22:57:23 +0530 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0+ */ |
| 2 | /* |
| 3 | * Copyright (c) 2024, Linaro Limited |
| 4 | */ |
| 5 | |
| 6 | /** |
| 7 | * get_mem_top() - Compute the value of ram_top |
| 8 | * @ram_start: Start of RAM |
| 9 | * @ram_size: RAM size |
| 10 | * @size: Minimum RAM size requested |
| 11 | * @fdt: FDT blob |
| 12 | * |
| 13 | * The function computes the top address of RAM memory that can be |
| 14 | * used by U-Boot. This is being done by going through the list of |
| 15 | * reserved memory regions specified in the devicetree blob passed |
| 16 | * to the function. The logic used here is derived from the lmb |
| 17 | * allocation function. |
| 18 | * |
| 19 | * Return: address of ram top on success, 0 on failure |
| 20 | */ |
| 21 | phys_addr_t get_mem_top(phys_addr_t ram_start, phys_size_t ram_size, |
| 22 | phys_size_t size, void *fdt); |