// SPDX-License-Identifier: GPL-2.0+ /* * Copyright (C) 2018, Bin Meng */ #include #include #include #include DECLARE_GLOBAL_DATA_PTR; int dram_init(void) { return fdtdec_setup_mem_size_base(); } int dram_init_banksize(void) { return fdtdec_setup_memory_banksize(); } phys_addr_t board_get_usable_ram_top(phys_size_t total_size) { #ifdef CONFIG_64BIT /* * Ensure that we run from first 4GB so that all * addresses used by U-Boot are 32bit addresses. * * This in-turn ensures that 32bit DMA capable * devices work fine because DMA mapping APIs will * provide 32bit DMA addresses only. */ if (gd->ram_top > SZ_4G) return SZ_4G; #endif return gd->ram_top; }