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>
-
-#if CONFIG_NR_DRAM_BANKS >= 2
-void dram_init_banksize(void)
-{
- DECLARE_GLOBAL_DATA_PTR;
-
- gd->bd->bi_dram[0].start = CONFIG_SDRAM0_BASE;
- gd->bd->bi_dram[0].size = CONFIG_SDRAM0_SIZE;
- gd->bd->bi_dram[1].start = CONFIG_SDRAM1_BASE;
- gd->bd->bi_dram[1].size = CONFIG_SDRAM1_SIZE;
-}
-#endif
- * Copyright (C) 2012-2015 Panasonic Corporation
- * Author: Masahiro Yamada <yamada.m@jp.panasonic.com>
+ * Copyright (C) 2012-2015 Masahiro Yamada <yamada.masahiro@socionext.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
*
* 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);
+}
- DECLARE_GLOBAL_DATA_PTR;
- gd->ram_size = CONFIG_SYS_SDRAM_SIZE;
+ 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);
+
+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);
+ }
+}
/* Open Firmware flat tree */
#define CONFIG_OF_LIBFDT
/* Open Firmware flat tree */
#define CONFIG_OF_LIBFDT
-/* Memory Size & Mapping */
-#define CONFIG_SYS_SDRAM_BASE CONFIG_SDRAM0_BASE
-
-#if CONFIG_SDRAM0_BASE + CONFIG_SDRAM0_SIZE >= CONFIG_SDRAM1_BASE
-/* Thre is no memory hole */
-#define CONFIG_NR_DRAM_BANKS 1
-#define CONFIG_SYS_SDRAM_SIZE (CONFIG_SDRAM0_SIZE + CONFIG_SDRAM1_SIZE)
-#else
+#define CONFIG_SYS_SDRAM_BASE 0x80000000
#define CONFIG_NR_DRAM_BANKS 2
#define CONFIG_NR_DRAM_BANKS 2
-#define CONFIG_SYS_SDRAM_SIZE (CONFIG_SDRAM0_SIZE)
-#endif
#if defined(CONFIG_MACH_PH1_SLD3) || defined(CONFIG_MACH_PH1_LD4) || \
defined(CONFIG_MACH_PH1_SLD8)
#if defined(CONFIG_MACH_PH1_SLD3) || defined(CONFIG_MACH_PH1_LD4) || \
defined(CONFIG_MACH_PH1_SLD8)