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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2022 StarFive Technology Co., Ltd.
* Author: Yanhong Wang <yanhong.wang@starfivetech.com>
*/
#include <common.h>
#include <fdtdec.h>
#include <init.h>
#include <linux/sizes.h>
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)
{
/*
* 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 (IS_ENABLED(CONFIG_64BIT) && gd->ram_top > SZ_4G)
return SZ_4G;
return gd->ram_top;
}
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