2 * Copyright (C) 2012-2015 Masahiro Yamada <yamada.masahiro@socionext.com>
4 * SPDX-License-Identifier: GPL-2.0+
10 #include <linux/err.h>
12 DECLARE_GLOBAL_DATA_PTR;
14 static const void *get_memory_reg_prop(const void *fdt, int *lenp)
18 offset = fdt_path_offset(fdt, "/memory");
22 return fdt_getprop(fdt, offset, "reg", lenp);
27 const void *fdt = gd->fdt_blob;
31 ac = fdt_address_cells(fdt, 0);
32 sc = fdt_size_cells(fdt, 0);
33 if (ac < 0 || sc < 1 || sc > 2) {
34 printf("invalid address/size cells\n");
38 val = get_memory_reg_prop(fdt, &len);
39 if (len / sizeof(*val) < ac + sc)
44 gd->ram_size = fdtdec_get_number(val, sc);
46 debug("DRAM size = %08lx\n", (unsigned long)gd->ram_size);
51 void dram_init_banksize(void)
53 const void *fdt = gd->fdt_blob;
55 int ac, sc, cells, len, i;
57 val = get_memory_reg_prop(fdt, &len);
61 ac = fdt_address_cells(fdt, 0);
62 sc = fdt_size_cells(fdt, 0);
63 if (ac < 1 || sc > 2 || sc < 1 || sc > 2) {
64 printf("invalid address/size cells\n");
72 for (i = 0; i < CONFIG_NR_DRAM_BANKS && len >= cells;
74 gd->bd->bi_dram[i].start = fdtdec_get_number(val, ac);
76 gd->bd->bi_dram[i].size = fdtdec_get_number(val, sc);
79 debug("DRAM bank %d: start = %08lx, size = %08lx\n",
80 i, (unsigned long)gd->bd->bi_dram[i].start,
81 (unsigned long)gd->bd->bi_dram[i].size);