1 // SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
2 /*
3 * Copyright (C) 2018, STMicroelectronics - All Rights Reserved
4 */
5
6 #define LOG_CATEGORY LOGC_ARCH
7
8 #include <common.h>
9 #include <dm.h>
10 #include <image.h>
11 #include <init.h>
12 #include <lmb.h>
13 #include <log.h>
14 #include <ram.h>
15 #include <asm/global_data.h>
16
17 DECLARE_GLOBAL_DATA_PTR;
18
dram_init(void)19 int dram_init(void)
20 {
21 struct ram_info ram;
22 struct udevice *dev;
23 int ret;
24
25 ret = uclass_get_device(UCLASS_RAM, 0, &dev);
26 if (ret) {
27 log_debug("RAM init failed: %d\n", ret);
28 return ret;
29 }
30 ret = ram_get_info(dev, &ram);
31 if (ret) {
32 log_debug("Cannot get RAM size: %d\n", ret);
33 return ret;
34 }
35 log_debug("RAM init base=%lx, size=%x\n", ram.base, ram.size);
36
37 gd->ram_size = ram.size;
38
39 return 0;
40 }
41
board_get_usable_ram_top(ulong total_size)42 ulong board_get_usable_ram_top(ulong total_size)
43 {
44 phys_addr_t reg;
45 struct lmb lmb;
46
47 /* found enough not-reserved memory to relocated U-Boot */
48 lmb_init(&lmb);
49 lmb_add(&lmb, gd->ram_base, gd->ram_size);
50 boot_fdt_add_mem_rsv_regions(&lmb, (void *)gd->fdt_blob);
51 reg = lmb_alloc(&lmb, CONFIG_SYS_MALLOC_LEN + total_size, SZ_4K);
52
53 if (reg)
54 return ALIGN(reg + CONFIG_SYS_MALLOC_LEN + total_size, SZ_4K);
55
56 return gd->ram_top;
57 }
58