arm64: mvebu: Replace board specific with generic memory bank decoding

The dram_init and dram_init_banksize functions were using a board
specific implementation for decoding the memory banks from the fdt.
This change makes the dram_init* functions use a generic implementation
of decoding and populating memory bank and size data.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Nathan Rossi <nathan@nathanrossi.com>
Cc: Nadav Haklai <nadavh@marvell.com>
Cc: Kostya Porotchkin <kostap@marvell.com>
Signed-off-by: Stefan Roese <sr@denx.de>

arch/arm/mach-mvebu/arm64-common.c

@@ -46,76 +46,18 @@ const struct mbus_dram_target_info *mvebu_mbus_dram_info(void)
 
 /* DRAM init code ... */
 
-static const void *get_memory_reg_prop(const void *fdt, int *lenp)
+int dram_init_banksize(void)
 {
-	int offset;
-
-	offset = fdt_path_offset(fdt, "/memory");
-	if (offset < 0)
-		return NULL;
+	fdtdec_setup_memory_banksize();
 
-	return fdt_getprop(fdt, offset, "reg", lenp);
+	return 0;
 }
 
 int dram_init(void)
 {
-	const void *fdt = gd->fdt_blob;
-	const fdt32_t *val;
-	int ac, sc, len;
-
-	ac = fdt_address_cells(fdt, 0);
-	sc = fdt_size_cells(fdt, 0);
-	if (ac < 0 || sc < 1 || sc > 2) {
-		printf("invalid address/size cells\n");
-		return -EINVAL;
-	}
-
-	val = get_memory_reg_prop(fdt, &len);
-	if (len / sizeof(*val) < ac + sc)
+	if (fdtdec_setup_memory_size() != 0)
 		return -EINVAL;
 
-	val += ac;
-
-	gd->ram_size = fdtdec_get_number(val, sc);
-
-	debug("DRAM size = %08lx\n", (unsigned long)gd->ram_size);
-
-	return 0;
-}
-
-int dram_init_banksize(void)
-{
-	const void *fdt = gd->fdt_blob;
-	const fdt32_t *val;
-	int ac, sc, cells, len, i;
-
-	val = get_memory_reg_prop(fdt, &len);
-	if (len < 0)
-		return -ENXIO;
-
-	ac = fdt_address_cells(fdt, 0);
-	sc = fdt_size_cells(fdt, 0);
-	if (ac < 1 || ac > 2 || sc < 1 || sc > 2) {
-		printf("invalid address/size cells\n");
-		return -ENXIO;
-	}
-
-	cells = ac + sc;
-
-	len /= sizeof(*val);
-
-	for (i = 0; i < CONFIG_NR_DRAM_BANKS && len >= cells;
-	     i++, len -= cells) {
-		gd->bd->bi_dram[i].start = fdtdec_get_number(val, ac);
-		val += ac;
-		gd->bd->bi_dram[i].size = fdtdec_get_number(val, sc);
-		val += sc;
-
-		debug("DRAM bank %d: start = %08lx, size = %08lx\n",
-		      i, (unsigned long)gd->bd->bi_dram[i].start,
-		      (unsigned long)gd->bd->bi_dram[i].size);
-	}
-
 	return 0;
 }