/* | |
* 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)); | |
} |