]>
git.ipfire.org Git - people/ms/u-boot.git/blob - arch/arm/mach-uniphier/dram_init.c
2 * Copyright (C) 2012-2015 Masahiro Yamada <yamada.masahiro@socionext.com>
4 * SPDX-License-Identifier: GPL-2.0+
11 DECLARE_GLOBAL_DATA_PTR
;
13 static const void *get_memory_reg_prop(const void *fdt
, int *lenp
)
17 offset
= fdt_path_offset(fdt
, "/memory");
21 return fdt_getprop(fdt
, offset
, "reg", lenp
);
26 const void *fdt
= gd
->fdt_blob
;
30 ac
= fdt_address_cells(fdt
, 0);
31 sc
= fdt_size_cells(fdt
, 0);
32 if (ac
< 0 || sc
< 1 || sc
> 2) {
33 printf("invalid address/size cells\n");
37 val
= get_memory_reg_prop(fdt
, &len
);
38 if (len
/ sizeof(*val
) < ac
+ sc
)
43 gd
->ram_size
= sc
== 2 ? fdt64_to_cpu(*(fdt64_t
*)val
) :
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
= ac
== 2 ?
75 fdt64_to_cpu(*(fdt64_t
*)val
) : fdt32_to_cpu(*val
);
77 gd
->bd
->bi_dram
[i
].size
= sc
== 2 ?
78 fdt64_to_cpu(*(fdt64_t
*)val
) : fdt32_to_cpu(*val
);
81 debug("DRAM bank %d: start = %08lx, size = %08lx\n",
82 i
, (unsigned long)gd
->bd
->bi_dram
[i
].start
,
83 (unsigned long)gd
->bd
->bi_dram
[i
].size
);