[u-boot.git] / board / imgtec / boston / ddr.c

// SPDX-License-Identifier: GPL-2.0
/*
 * Copyright (C) 2016 Imagination Technologies
 */

#include <common.h>
#include <init.h>
#include <asm/global_data.h>

#include <asm/io.h>

#include "boston-regs.h"

DECLARE_GLOBAL_DATA_PTR;

int dram_init(void)
{
	u32 ddrconf0 = __raw_readl((uint32_t *)BOSTON_PLAT_DDRCONF0);

	gd->ram_size = (phys_size_t)(ddrconf0 & BOSTON_PLAT_DDRCONF0_SIZE) <<
			30;

	return 0;
}

ulong board_get_usable_ram_top(ulong total_size)
{
	DECLARE_GLOBAL_DATA_PTR;

	if (gd->ram_top < CONFIG_SYS_SDRAM_BASE) {
		/* 2GB wrapped around to 0 */
		return CKSEG0ADDR(256 << 20);
	}

	return min_t(unsigned long, gd->ram_top, CKSEG0ADDR(256 << 20));
}
Commit	Line	Data
83d290c5	1	// SPDX-License-Identifier: GPL-2.0
ad8783cb PB	2	/*
ad8783cb PB	3	* Copyright (C) 2016 Imagination Technologies
ad8783cb PB	4	*/
	5
	6	#include <common.h>
67c4e9f8	7	#include <init.h>
401d1c4f	8	#include <asm/global_data.h>
ad8783cb PB	9
	10	#include <asm/io.h>
	11
	12	#include "boston-regs.h"
	13
088454cd SG	14	DECLARE_GLOBAL_DATA_PTR;
088454cd SG	15
f1683aa7	16	int dram_init(void)
ad8783cb PB	17	{
	18	u32 ddrconf0 = __raw_readl((uint32_t *)BOSTON_PLAT_DDRCONF0);
	19
088454cd SG	20	gd->ram_size = (phys_size_t)(ddrconf0 & BOSTON_PLAT_DDRCONF0_SIZE) <<
	21	30;
	22
	23	return 0;
ad8783cb PB	24	}
	25
	26	ulong board_get_usable_ram_top(ulong total_size)
	27	{
	28	DECLARE_GLOBAL_DATA_PTR;
	29
	30	if (gd->ram_top < CONFIG_SYS_SDRAM_BASE) {
	31	/* 2GB wrapped around to 0 */
	32	return CKSEG0ADDR(256 << 20);
	33	}
	34
	35	return min_t(unsigned long, gd->ram_top, CKSEG0ADDR(256 << 20));
	36	}