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ad8783cb PB |
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 | ||
088454cd SG |
13 | DECLARE_GLOBAL_DATA_PTR; |
14 | ||
15 | int initdram(void) | |
ad8783cb PB |
16 | { |
17 | u32 ddrconf0 = __raw_readl((uint32_t *)BOSTON_PLAT_DDRCONF0); | |
18 | ||
088454cd SG |
19 | gd->ram_size = (phys_size_t)(ddrconf0 & BOSTON_PLAT_DDRCONF0_SIZE) << |
20 | 30; | |
21 | ||
22 | return 0; | |
ad8783cb PB |
23 | } |
24 | ||
25 | ulong board_get_usable_ram_top(ulong total_size) | |
26 | { | |
27 | DECLARE_GLOBAL_DATA_PTR; | |
28 | ||
29 | if (gd->ram_top < CONFIG_SYS_SDRAM_BASE) { | |
30 | /* 2GB wrapped around to 0 */ | |
31 | return CKSEG0ADDR(256 << 20); | |
32 | } | |
33 | ||
34 | return min_t(unsigned long, gd->ram_top, CKSEG0ADDR(256 << 20)); | |
35 | } |