u-boot/board/imgtec/boston/ddr.c
Simon Glass f1683aa73c board_f: Rename initdram() to dram_init()
This allows us to use the same DRAM init function on all archs. Add a
dummy function for arc, which does not use DRAM init here.

Signed-off-by: Simon Glass <sjg@chromium.org>
[trini: Dummy function on nios2]
Signed-off-by: Tom Rini <trini@konsulko.com>
2017-04-13 09:40:57 -04:00

35 lines
625 B
C

/*
* Copyright (C) 2016 Imagination Technologies
*
* SPDX-License-Identifier: GPL-2.0
*/
#include <common.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));
}