| Paul Burton | f5de32a | 2016-09-08 07:47:39 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2016 Imagination Technologies |
| 3 | * |
| 4 | * SPDX-License-Identifier: GPL-2.0 |
| 5 | */ |
| 6 | |
| 7 | #include <common.h> |
| 8 | |
| 9 | #include <asm/io.h> |
| 10 | |
| 11 | #include "boston-regs.h" |
| 12 | |
| 13 | phys_size_t initdram(int board_type) |
| 14 | { |
| 15 | u32 ddrconf0 = __raw_readl((uint32_t *)BOSTON_PLAT_DDRCONF0); |
| 16 | |
| 17 | return (phys_size_t)(ddrconf0 & BOSTON_PLAT_DDRCONF0_SIZE) << 30; |
| 18 | } |
| 19 | |
| 20 | ulong board_get_usable_ram_top(ulong total_size) |
| 21 | { |
| 22 | DECLARE_GLOBAL_DATA_PTR; |
| 23 | |
| 24 | if (gd->ram_top < CONFIG_SYS_SDRAM_BASE) { |
| 25 | /* 2GB wrapped around to 0 */ |
| 26 | return CKSEG0ADDR(256 << 20); |
| 27 | } |
| 28 | |
| 29 | return min_t(unsigned long, gd->ram_top, CKSEG0ADDR(256 << 20)); |
| 30 | } |