mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-11 23:47:24 +00:00
cf88affab6
Device tree specifies the available memory ranges in its "/memory" node. Use it to simplify the CONFIG defines. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
59 lines
1.1 KiB
C
59 lines
1.1 KiB
C
/*
|
|
* Copyright (C) 2012-2015 Masahiro Yamada <yamada.masahiro@socionext.com>
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <libfdt.h>
|
|
#include <linux/err.h>
|
|
|
|
DECLARE_GLOBAL_DATA_PTR;
|
|
|
|
static const void *get_memory_reg_prop(const void *fdt, int *lenp)
|
|
{
|
|
int offset;
|
|
|
|
offset = fdt_path_offset(fdt, "/memory");
|
|
if (offset < 0)
|
|
return NULL;
|
|
|
|
return fdt_getprop(fdt, offset, "reg", lenp);
|
|
}
|
|
|
|
int dram_init(void)
|
|
{
|
|
const fdt32_t *val;
|
|
int len;
|
|
|
|
val = get_memory_reg_prop(gd->fdt_blob, &len);
|
|
if (len < sizeof(*val))
|
|
return -EINVAL;
|
|
|
|
gd->ram_size = fdt32_to_cpu(*(val + 1));
|
|
|
|
debug("DRAM size = %08lx\n", gd->ram_size);
|
|
|
|
return 0;
|
|
}
|
|
|
|
void dram_init_banksize(void)
|
|
{
|
|
const fdt32_t *val;
|
|
int len, i;
|
|
|
|
val = get_memory_reg_prop(gd->fdt_blob, &len);
|
|
if (len < 0)
|
|
return;
|
|
|
|
len /= sizeof(*val);
|
|
len /= 2;
|
|
|
|
for (i = 0; i < len; i++) {
|
|
gd->bd->bi_dram[i].start = fdt32_to_cpu(*val++);
|
|
gd->bd->bi_dram[i].size = fdt32_to_cpu(*val++);
|
|
|
|
debug("DRAM bank %d: start = %08lx, size = %08lx\n",
|
|
i, gd->bd->bi_dram[i].start, gd->bd->bi_dram[i].size);
|
|
}
|
|
}
|